1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
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10 | * |
9 | * |
11 | * * Redistributions of source code must retain the above copyright |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
12 | * notice, this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
13 | * |
12 | * |
14 | * * Redistributions in binary form must reproduce the above |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * copyright notice, this list of conditions and the following |
14 | * notice, this list of conditions and the following disclaimer in the |
16 | * disclaimer in the documentation and/or other materials provided |
15 | * documentation and/or other materials provided with the distribution. |
17 | * with the distribution. |
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18 | * |
16 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | * |
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28 | * Alternatively, the contents of this file may be used under the terms of |
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29 | * the GNU General Public License ("GPL") version 2 or any later version, |
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30 | * in which case the provisions of the GPL are applicable instead of |
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31 | * the above. If you wish to allow the use of your version of this file |
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32 | * only under the terms of the GPL and not to allow others to use your |
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33 | * version of this file under the BSD license, indicate your decision |
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34 | * by deleting the provisions above and replace them with the notice |
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35 | * and other provisions required by the GPL. If you do not delete the |
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36 | * provisions above, a recipient may use your version of this file under |
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37 | * either the BSD or the GPL. |
30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | /* this big block deduces configuration from config.h */ |
33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
37 | # ifdef EV_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
38 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
39 | # else |
44 | # else |
40 | # include "config.h" |
45 | # include "config.h" |
41 | # endif |
46 | # endif |
42 | |
47 | |
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48 | # if HAVE_FLOOR |
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49 | # ifndef EV_USE_FLOOR |
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50 | # define EV_USE_FLOOR 1 |
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51 | # endif |
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52 | # endif |
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53 | |
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54 | # if HAVE_CLOCK_SYSCALL |
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55 | # ifndef EV_USE_CLOCK_SYSCALL |
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56 | # define EV_USE_CLOCK_SYSCALL 1 |
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57 | # ifndef EV_USE_REALTIME |
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58 | # define EV_USE_REALTIME 0 |
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59 | # endif |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 1 |
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62 | # endif |
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63 | # endif |
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64 | # elif !defined EV_USE_CLOCK_SYSCALL |
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65 | # define EV_USE_CLOCK_SYSCALL 0 |
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66 | # endif |
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67 | |
43 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
44 | # ifndef EV_USE_MONOTONIC |
69 | # ifndef EV_USE_MONOTONIC |
45 | # define EV_USE_MONOTONIC 1 |
70 | # define EV_USE_MONOTONIC 1 |
46 | # endif |
71 | # endif |
47 | # ifndef EV_USE_REALTIME |
72 | # ifndef EV_USE_REALTIME |
48 | # define EV_USE_REALTIME 1 |
73 | # define EV_USE_REALTIME 0 |
49 | # endif |
74 | # endif |
50 | # else |
75 | # else |
51 | # ifndef EV_USE_MONOTONIC |
76 | # ifndef EV_USE_MONOTONIC |
52 | # define EV_USE_MONOTONIC 0 |
77 | # define EV_USE_MONOTONIC 0 |
53 | # endif |
78 | # endif |
54 | # ifndef EV_USE_REALTIME |
79 | # ifndef EV_USE_REALTIME |
55 | # define EV_USE_REALTIME 0 |
80 | # define EV_USE_REALTIME 0 |
56 | # endif |
81 | # endif |
57 | # endif |
82 | # endif |
58 | |
83 | |
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84 | # if HAVE_NANOSLEEP |
59 | # ifndef EV_USE_SELECT |
85 | # ifndef EV_USE_NANOSLEEP |
60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
61 | # define EV_USE_SELECT 1 |
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62 | # else |
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63 | # define EV_USE_SELECT 0 |
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64 | # endif |
87 | # endif |
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88 | # else |
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89 | # undef EV_USE_NANOSLEEP |
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90 | # define EV_USE_NANOSLEEP 0 |
65 | # endif |
91 | # endif |
66 | |
92 | |
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93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
67 | # ifndef EV_USE_POLL |
94 | # ifndef EV_USE_SELECT |
68 | # if HAVE_POLL && HAVE_POLL_H |
95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
69 | # define EV_USE_POLL 1 |
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70 | # else |
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71 | # define EV_USE_POLL 0 |
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72 | # endif |
96 | # endif |
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97 | # else |
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98 | # undef EV_USE_SELECT |
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99 | # define EV_USE_SELECT 0 |
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100 | # endif |
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101 | |
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102 | # if HAVE_POLL && HAVE_POLL_H |
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103 | # ifndef EV_USE_POLL |
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104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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105 | # endif |
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106 | # else |
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107 | # undef EV_USE_POLL |
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108 | # define EV_USE_POLL 0 |
73 | # endif |
109 | # endif |
74 | |
110 | |
75 | # ifndef EV_USE_EPOLL |
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76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
77 | # define EV_USE_EPOLL 1 |
112 | # ifndef EV_USE_EPOLL |
78 | # else |
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
79 | # define EV_USE_EPOLL 0 |
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80 | # endif |
114 | # endif |
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115 | # else |
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116 | # undef EV_USE_EPOLL |
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117 | # define EV_USE_EPOLL 0 |
81 | # endif |
118 | # endif |
82 | |
119 | |
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120 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
83 | # ifndef EV_USE_KQUEUE |
121 | # ifndef EV_USE_KQUEUE |
84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
122 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
85 | # define EV_USE_KQUEUE 1 |
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86 | # else |
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87 | # define EV_USE_KQUEUE 0 |
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88 | # endif |
123 | # endif |
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124 | # else |
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125 | # undef EV_USE_KQUEUE |
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126 | # define EV_USE_KQUEUE 0 |
89 | # endif |
127 | # endif |
90 | |
128 | |
91 | # ifndef EV_USE_PORT |
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92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
129 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
93 | # define EV_USE_PORT 1 |
130 | # ifndef EV_USE_PORT |
94 | # else |
131 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
95 | # define EV_USE_PORT 0 |
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96 | # endif |
132 | # endif |
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133 | # else |
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134 | # undef EV_USE_PORT |
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135 | # define EV_USE_PORT 0 |
97 | # endif |
136 | # endif |
98 | |
137 | |
99 | # ifndef EV_USE_INOTIFY |
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100 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
138 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
101 | # define EV_USE_INOTIFY 1 |
139 | # ifndef EV_USE_INOTIFY |
102 | # else |
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103 | # define EV_USE_INOTIFY 0 |
140 | # define EV_USE_INOTIFY EV_FEATURE_OS |
104 | # endif |
141 | # endif |
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142 | # else |
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143 | # undef EV_USE_INOTIFY |
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144 | # define EV_USE_INOTIFY 0 |
105 | # endif |
145 | # endif |
106 | |
146 | |
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147 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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148 | # ifndef EV_USE_SIGNALFD |
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149 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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150 | # endif |
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151 | # else |
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152 | # undef EV_USE_SIGNALFD |
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153 | # define EV_USE_SIGNALFD 0 |
107 | #endif |
154 | # endif |
108 | |
155 | |
109 | #include <math.h> |
156 | # if HAVE_EVENTFD |
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157 | # ifndef EV_USE_EVENTFD |
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158 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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159 | # endif |
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160 | # else |
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161 | # undef EV_USE_EVENTFD |
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162 | # define EV_USE_EVENTFD 0 |
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163 | # endif |
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164 | |
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165 | #endif |
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166 | |
110 | #include <stdlib.h> |
167 | #include <stdlib.h> |
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168 | #include <string.h> |
111 | #include <fcntl.h> |
169 | #include <fcntl.h> |
112 | #include <stddef.h> |
170 | #include <stddef.h> |
113 | |
171 | |
114 | #include <stdio.h> |
172 | #include <stdio.h> |
115 | |
173 | |
116 | #include <assert.h> |
174 | #include <assert.h> |
117 | #include <errno.h> |
175 | #include <errno.h> |
118 | #include <sys/types.h> |
176 | #include <sys/types.h> |
119 | #include <time.h> |
177 | #include <time.h> |
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178 | #include <limits.h> |
120 | |
179 | |
121 | #include <signal.h> |
180 | #include <signal.h> |
122 | |
181 | |
123 | #ifdef EV_H |
182 | #ifdef EV_H |
124 | # include EV_H |
183 | # include EV_H |
125 | #else |
184 | #else |
126 | # include "ev.h" |
185 | # include "ev.h" |
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186 | #endif |
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187 | |
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188 | #if EV_NO_THREADS |
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189 | # undef EV_NO_SMP |
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190 | # define EV_NO_SMP 1 |
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191 | # undef ECB_NO_THREADS |
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192 | # define ECB_NO_THREADS 1 |
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193 | #endif |
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194 | #if EV_NO_SMP |
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195 | # undef EV_NO_SMP |
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196 | # define ECB_NO_SMP 1 |
127 | #endif |
197 | #endif |
128 | |
198 | |
129 | #ifndef _WIN32 |
199 | #ifndef _WIN32 |
130 | # include <sys/time.h> |
200 | # include <sys/time.h> |
131 | # include <sys/wait.h> |
201 | # include <sys/wait.h> |
132 | # include <unistd.h> |
202 | # include <unistd.h> |
133 | #else |
203 | #else |
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204 | # include <io.h> |
134 | # define WIN32_LEAN_AND_MEAN |
205 | # define WIN32_LEAN_AND_MEAN |
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206 | # include <winsock2.h> |
135 | # include <windows.h> |
207 | # include <windows.h> |
136 | # ifndef EV_SELECT_IS_WINSOCKET |
208 | # ifndef EV_SELECT_IS_WINSOCKET |
137 | # define EV_SELECT_IS_WINSOCKET 1 |
209 | # define EV_SELECT_IS_WINSOCKET 1 |
138 | # endif |
210 | # endif |
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211 | # undef EV_AVOID_STDIO |
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212 | #endif |
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213 | |
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214 | /* OS X, in its infinite idiocy, actually HARDCODES |
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215 | * a limit of 1024 into their select. Where people have brains, |
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216 | * OS X engineers apparently have a vacuum. Or maybe they were |
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217 | * ordered to have a vacuum, or they do anything for money. |
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218 | * This might help. Or not. |
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219 | */ |
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220 | #define _DARWIN_UNLIMITED_SELECT 1 |
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221 | |
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222 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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223 | |
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224 | /* try to deduce the maximum number of signals on this platform */ |
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225 | #if defined EV_NSIG |
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226 | /* use what's provided */ |
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227 | #elif defined NSIG |
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228 | # define EV_NSIG (NSIG) |
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229 | #elif defined _NSIG |
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230 | # define EV_NSIG (_NSIG) |
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231 | #elif defined SIGMAX |
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232 | # define EV_NSIG (SIGMAX+1) |
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233 | #elif defined SIG_MAX |
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234 | # define EV_NSIG (SIG_MAX+1) |
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235 | #elif defined _SIG_MAX |
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236 | # define EV_NSIG (_SIG_MAX+1) |
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237 | #elif defined MAXSIG |
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238 | # define EV_NSIG (MAXSIG+1) |
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239 | #elif defined MAX_SIG |
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240 | # define EV_NSIG (MAX_SIG+1) |
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241 | #elif defined SIGARRAYSIZE |
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242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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243 | #elif defined _sys_nsig |
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244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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245 | #else |
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246 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
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247 | #endif |
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248 | |
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249 | #ifndef EV_USE_FLOOR |
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250 | # define EV_USE_FLOOR 0 |
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251 | #endif |
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252 | |
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253 | #ifndef EV_USE_CLOCK_SYSCALL |
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254 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
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255 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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256 | # else |
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257 | # define EV_USE_CLOCK_SYSCALL 0 |
139 | #endif |
258 | # endif |
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259 | #endif |
140 | |
260 | |
141 | /**/ |
261 | #if !(_POSIX_TIMERS > 0) |
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262 | # ifndef EV_USE_MONOTONIC |
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263 | # define EV_USE_MONOTONIC 0 |
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264 | # endif |
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265 | # ifndef EV_USE_REALTIME |
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266 | # define EV_USE_REALTIME 0 |
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267 | # endif |
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268 | #endif |
142 | |
269 | |
143 | #ifndef EV_USE_MONOTONIC |
270 | #ifndef EV_USE_MONOTONIC |
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271 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
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272 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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273 | # else |
144 | # define EV_USE_MONOTONIC 0 |
274 | # define EV_USE_MONOTONIC 0 |
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275 | # endif |
145 | #endif |
276 | #endif |
146 | |
277 | |
147 | #ifndef EV_USE_REALTIME |
278 | #ifndef EV_USE_REALTIME |
148 | # define EV_USE_REALTIME 0 |
279 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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280 | #endif |
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281 | |
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282 | #ifndef EV_USE_NANOSLEEP |
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283 | # if _POSIX_C_SOURCE >= 199309L |
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284 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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285 | # else |
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286 | # define EV_USE_NANOSLEEP 0 |
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287 | # endif |
149 | #endif |
288 | #endif |
150 | |
289 | |
151 | #ifndef EV_USE_SELECT |
290 | #ifndef EV_USE_SELECT |
152 | # define EV_USE_SELECT 1 |
291 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
153 | #endif |
292 | #endif |
154 | |
293 | |
155 | #ifndef EV_USE_POLL |
294 | #ifndef EV_USE_POLL |
156 | # ifdef _WIN32 |
295 | # ifdef _WIN32 |
157 | # define EV_USE_POLL 0 |
296 | # define EV_USE_POLL 0 |
158 | # else |
297 | # else |
159 | # define EV_USE_POLL 1 |
298 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
160 | # endif |
299 | # endif |
161 | #endif |
300 | #endif |
162 | |
301 | |
163 | #ifndef EV_USE_EPOLL |
302 | #ifndef EV_USE_EPOLL |
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303 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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304 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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305 | # else |
164 | # define EV_USE_EPOLL 0 |
306 | # define EV_USE_EPOLL 0 |
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307 | # endif |
165 | #endif |
308 | #endif |
166 | |
309 | |
167 | #ifndef EV_USE_KQUEUE |
310 | #ifndef EV_USE_KQUEUE |
168 | # define EV_USE_KQUEUE 0 |
311 | # define EV_USE_KQUEUE 0 |
169 | #endif |
312 | #endif |
… | |
… | |
171 | #ifndef EV_USE_PORT |
314 | #ifndef EV_USE_PORT |
172 | # define EV_USE_PORT 0 |
315 | # define EV_USE_PORT 0 |
173 | #endif |
316 | #endif |
174 | |
317 | |
175 | #ifndef EV_USE_INOTIFY |
318 | #ifndef EV_USE_INOTIFY |
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319 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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320 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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321 | # else |
176 | # define EV_USE_INOTIFY 0 |
322 | # define EV_USE_INOTIFY 0 |
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323 | # endif |
177 | #endif |
324 | #endif |
178 | |
325 | |
179 | #ifndef EV_PID_HASHSIZE |
326 | #ifndef EV_PID_HASHSIZE |
180 | # if EV_MINIMAL |
327 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
181 | # define EV_PID_HASHSIZE 1 |
328 | #endif |
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329 | |
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330 | #ifndef EV_INOTIFY_HASHSIZE |
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331 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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332 | #endif |
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333 | |
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334 | #ifndef EV_USE_EVENTFD |
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335 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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336 | # define EV_USE_EVENTFD EV_FEATURE_OS |
182 | # else |
337 | # else |
183 | # define EV_PID_HASHSIZE 16 |
338 | # define EV_USE_EVENTFD 0 |
184 | # endif |
339 | # endif |
185 | #endif |
340 | #endif |
186 | |
341 | |
187 | #ifndef EV_INOTIFY_HASHSIZE |
342 | #ifndef EV_USE_SIGNALFD |
188 | # if EV_MINIMAL |
343 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
189 | # define EV_INOTIFY_HASHSIZE 1 |
344 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
190 | # else |
345 | # else |
191 | # define EV_INOTIFY_HASHSIZE 16 |
346 | # define EV_USE_SIGNALFD 0 |
192 | # endif |
347 | # endif |
193 | #endif |
348 | #endif |
194 | |
349 | |
195 | /**/ |
350 | #if 0 /* debugging */ |
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351 | # define EV_VERIFY 3 |
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352 | # define EV_USE_4HEAP 1 |
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353 | # define EV_HEAP_CACHE_AT 1 |
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354 | #endif |
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355 | |
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356 | #ifndef EV_VERIFY |
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357 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
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358 | #endif |
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359 | |
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360 | #ifndef EV_USE_4HEAP |
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361 | # define EV_USE_4HEAP EV_FEATURE_DATA |
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362 | #endif |
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363 | |
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364 | #ifndef EV_HEAP_CACHE_AT |
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365 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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366 | #endif |
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367 | |
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368 | #ifdef ANDROID |
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369 | /* supposedly, android doesn't typedef fd_mask */ |
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370 | # undef EV_USE_SELECT |
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371 | # define EV_USE_SELECT 0 |
|
|
372 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
|
|
373 | # undef EV_USE_CLOCK_SYSCALL |
|
|
374 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
375 | #endif |
|
|
376 | |
|
|
377 | /* aix's poll.h seems to cause lots of trouble */ |
|
|
378 | #ifdef _AIX |
|
|
379 | /* AIX has a completely broken poll.h header */ |
|
|
380 | # undef EV_USE_POLL |
|
|
381 | # define EV_USE_POLL 0 |
|
|
382 | #endif |
|
|
383 | |
|
|
384 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
385 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
386 | #if EV_USE_CLOCK_SYSCALL |
|
|
387 | # include <sys/syscall.h> |
|
|
388 | # ifdef SYS_clock_gettime |
|
|
389 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
390 | # undef EV_USE_MONOTONIC |
|
|
391 | # define EV_USE_MONOTONIC 1 |
|
|
392 | # else |
|
|
393 | # undef EV_USE_CLOCK_SYSCALL |
|
|
394 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
395 | # endif |
|
|
396 | #endif |
|
|
397 | |
|
|
398 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
196 | |
399 | |
197 | #ifndef CLOCK_MONOTONIC |
400 | #ifndef CLOCK_MONOTONIC |
198 | # undef EV_USE_MONOTONIC |
401 | # undef EV_USE_MONOTONIC |
199 | # define EV_USE_MONOTONIC 0 |
402 | # define EV_USE_MONOTONIC 0 |
200 | #endif |
403 | #endif |
… | |
… | |
202 | #ifndef CLOCK_REALTIME |
405 | #ifndef CLOCK_REALTIME |
203 | # undef EV_USE_REALTIME |
406 | # undef EV_USE_REALTIME |
204 | # define EV_USE_REALTIME 0 |
407 | # define EV_USE_REALTIME 0 |
205 | #endif |
408 | #endif |
206 | |
409 | |
207 | #if EV_SELECT_IS_WINSOCKET |
|
|
208 | # include <winsock.h> |
|
|
209 | #endif |
|
|
210 | |
|
|
211 | #if !EV_STAT_ENABLE |
410 | #if !EV_STAT_ENABLE |
|
|
411 | # undef EV_USE_INOTIFY |
212 | # define EV_USE_INOTIFY 0 |
412 | # define EV_USE_INOTIFY 0 |
213 | #endif |
413 | #endif |
214 | |
414 | |
|
|
415 | #if !EV_USE_NANOSLEEP |
|
|
416 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
417 | # if !defined _WIN32 && !defined __hpux |
|
|
418 | # include <sys/select.h> |
|
|
419 | # endif |
|
|
420 | #endif |
|
|
421 | |
215 | #if EV_USE_INOTIFY |
422 | #if EV_USE_INOTIFY |
|
|
423 | # include <sys/statfs.h> |
216 | # include <sys/inotify.h> |
424 | # include <sys/inotify.h> |
|
|
425 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
426 | # ifndef IN_DONT_FOLLOW |
|
|
427 | # undef EV_USE_INOTIFY |
|
|
428 | # define EV_USE_INOTIFY 0 |
|
|
429 | # endif |
|
|
430 | #endif |
|
|
431 | |
|
|
432 | #if EV_USE_EVENTFD |
|
|
433 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
434 | # include <stdint.h> |
|
|
435 | # ifndef EFD_NONBLOCK |
|
|
436 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
437 | # endif |
|
|
438 | # ifndef EFD_CLOEXEC |
|
|
439 | # ifdef O_CLOEXEC |
|
|
440 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
441 | # else |
|
|
442 | # define EFD_CLOEXEC 02000000 |
|
|
443 | # endif |
|
|
444 | # endif |
|
|
445 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
446 | #endif |
|
|
447 | |
|
|
448 | #if EV_USE_SIGNALFD |
|
|
449 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
450 | # include <stdint.h> |
|
|
451 | # ifndef SFD_NONBLOCK |
|
|
452 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
453 | # endif |
|
|
454 | # ifndef SFD_CLOEXEC |
|
|
455 | # ifdef O_CLOEXEC |
|
|
456 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
457 | # else |
|
|
458 | # define SFD_CLOEXEC 02000000 |
|
|
459 | # endif |
|
|
460 | # endif |
|
|
461 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
462 | |
|
|
463 | struct signalfd_siginfo |
|
|
464 | { |
|
|
465 | uint32_t ssi_signo; |
|
|
466 | char pad[128 - sizeof (uint32_t)]; |
|
|
467 | }; |
217 | #endif |
468 | #endif |
218 | |
469 | |
219 | /**/ |
470 | /**/ |
|
|
471 | |
|
|
472 | #if EV_VERIFY >= 3 |
|
|
473 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
474 | #else |
|
|
475 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
476 | #endif |
|
|
477 | |
|
|
478 | /* |
|
|
479 | * This is used to work around floating point rounding problems. |
|
|
480 | * This value is good at least till the year 4000. |
|
|
481 | */ |
|
|
482 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
483 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
220 | |
484 | |
221 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
485 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
222 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
486 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
223 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
|
|
224 | |
487 | |
|
|
488 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
489 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
490 | |
|
|
491 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
492 | /* ECB.H BEGIN */ |
|
|
493 | /* |
|
|
494 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
495 | * |
|
|
496 | * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
497 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
498 | * All rights reserved. |
|
|
499 | * |
|
|
500 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
501 | * tion, are permitted provided that the following conditions are met: |
|
|
502 | * |
|
|
503 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
504 | * this list of conditions and the following disclaimer. |
|
|
505 | * |
|
|
506 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
507 | * notice, this list of conditions and the following disclaimer in the |
|
|
508 | * documentation and/or other materials provided with the distribution. |
|
|
509 | * |
|
|
510 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
511 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
512 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
513 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
514 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
515 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
516 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
517 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
518 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
519 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
520 | * |
|
|
521 | * Alternatively, the contents of this file may be used under the terms of |
|
|
522 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
523 | * in which case the provisions of the GPL are applicable instead of |
|
|
524 | * the above. If you wish to allow the use of your version of this file |
|
|
525 | * only under the terms of the GPL and not to allow others to use your |
|
|
526 | * version of this file under the BSD license, indicate your decision |
|
|
527 | * by deleting the provisions above and replace them with the notice |
|
|
528 | * and other provisions required by the GPL. If you do not delete the |
|
|
529 | * provisions above, a recipient may use your version of this file under |
|
|
530 | * either the BSD or the GPL. |
|
|
531 | */ |
|
|
532 | |
|
|
533 | #ifndef ECB_H |
|
|
534 | #define ECB_H |
|
|
535 | |
|
|
536 | /* 16 bits major, 16 bits minor */ |
|
|
537 | #define ECB_VERSION 0x00010003 |
|
|
538 | |
|
|
539 | #ifdef _WIN32 |
|
|
540 | typedef signed char int8_t; |
|
|
541 | typedef unsigned char uint8_t; |
|
|
542 | typedef signed short int16_t; |
|
|
543 | typedef unsigned short uint16_t; |
|
|
544 | typedef signed int int32_t; |
|
|
545 | typedef unsigned int uint32_t; |
225 | #if __GNUC__ >= 3 |
546 | #if __GNUC__ |
226 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
547 | typedef signed long long int64_t; |
227 | # define noinline __attribute__ ((noinline)) |
548 | typedef unsigned long long uint64_t; |
|
|
549 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
550 | typedef signed __int64 int64_t; |
|
|
551 | typedef unsigned __int64 uint64_t; |
|
|
552 | #endif |
|
|
553 | #ifdef _WIN64 |
|
|
554 | #define ECB_PTRSIZE 8 |
|
|
555 | typedef uint64_t uintptr_t; |
|
|
556 | typedef int64_t intptr_t; |
|
|
557 | #else |
|
|
558 | #define ECB_PTRSIZE 4 |
|
|
559 | typedef uint32_t uintptr_t; |
|
|
560 | typedef int32_t intptr_t; |
|
|
561 | #endif |
228 | #else |
562 | #else |
229 | # define expect(expr,value) (expr) |
563 | #include <inttypes.h> |
230 | # define noinline |
564 | #if UINTMAX_MAX > 0xffffffffU |
231 | # if __STDC_VERSION__ < 199901L |
565 | #define ECB_PTRSIZE 8 |
232 | # define inline |
566 | #else |
|
|
567 | #define ECB_PTRSIZE 4 |
|
|
568 | #endif |
233 | # endif |
569 | #endif |
|
|
570 | |
|
|
571 | /* work around x32 idiocy by defining proper macros */ |
|
|
572 | #if __amd64 || __x86_64 || _M_AMD64 || _M_X64 |
|
|
573 | #if _ILP32 |
|
|
574 | #define ECB_AMD64_X32 1 |
|
|
575 | #else |
|
|
576 | #define ECB_AMD64 1 |
234 | #endif |
577 | #endif |
|
|
578 | #endif |
235 | |
579 | |
|
|
580 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
581 | * what their idiot authors think are the "more important" extensions, |
|
|
582 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
583 | * or so. |
|
|
584 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
585 | * an issue with that they should have done it right in the first place. |
|
|
586 | */ |
|
|
587 | #ifndef ECB_GCC_VERSION |
|
|
588 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
589 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
590 | #else |
|
|
591 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
592 | #endif |
|
|
593 | #endif |
|
|
594 | |
|
|
595 | #define ECB_CPP (__cplusplus+0) |
|
|
596 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
597 | |
|
|
598 | #if ECB_CPP |
|
|
599 | #define ECB_C 0 |
|
|
600 | #define ECB_STDC_VERSION 0 |
|
|
601 | #else |
|
|
602 | #define ECB_C 1 |
|
|
603 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
604 | #endif |
|
|
605 | |
|
|
606 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
607 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
608 | |
|
|
609 | #if ECB_CPP |
|
|
610 | #define ECB_EXTERN_C extern "C" |
|
|
611 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
612 | #define ECB_EXTERN_C_END } |
|
|
613 | #else |
|
|
614 | #define ECB_EXTERN_C extern |
|
|
615 | #define ECB_EXTERN_C_BEG |
|
|
616 | #define ECB_EXTERN_C_END |
|
|
617 | #endif |
|
|
618 | |
|
|
619 | /*****************************************************************************/ |
|
|
620 | |
|
|
621 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
622 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
623 | |
|
|
624 | #if ECB_NO_THREADS |
|
|
625 | #define ECB_NO_SMP 1 |
|
|
626 | #endif |
|
|
627 | |
|
|
628 | #if ECB_NO_SMP |
|
|
629 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
630 | #endif |
|
|
631 | |
|
|
632 | #ifndef ECB_MEMORY_FENCE |
|
|
633 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
634 | #if __i386 || __i386__ |
|
|
635 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
636 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
637 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
638 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
|
|
639 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
640 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
641 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
642 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
643 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
644 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
645 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
|
|
646 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
647 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
648 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
|
|
649 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
650 | #elif __aarch64__ |
|
|
651 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
652 | #elif (__sparc || __sparc__) && !__sparcv8 |
|
|
653 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
654 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
655 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
656 | #elif defined __s390__ || defined __s390x__ |
|
|
657 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
658 | #elif defined __mips__ |
|
|
659 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
660 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
661 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
662 | #elif defined __alpha__ |
|
|
663 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
664 | #elif defined __hppa__ |
|
|
665 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
666 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
667 | #elif defined __ia64__ |
|
|
668 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
669 | #elif defined __m68k__ |
|
|
670 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
671 | #elif defined __m88k__ |
|
|
672 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
673 | #elif defined __sh__ |
|
|
674 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
675 | #endif |
|
|
676 | #endif |
|
|
677 | #endif |
|
|
678 | |
|
|
679 | #ifndef ECB_MEMORY_FENCE |
|
|
680 | #if ECB_GCC_VERSION(4,7) |
|
|
681 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
682 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
683 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
684 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
685 | |
|
|
686 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
|
|
687 | * without risking compile time errors with other compilers. We *could* |
|
|
688 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
|
|
689 | * around this shit time and again. |
|
|
690 | * #elif defined __clang && __has_feature (cxx_atomic) |
|
|
691 | * // see comment below (stdatomic.h) about the C11 memory model. |
|
|
692 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
693 | * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
694 | * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
695 | */ |
|
|
696 | |
|
|
697 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
698 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
699 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
700 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
701 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
702 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
703 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
704 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
705 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
706 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
707 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
708 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
709 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
710 | #elif defined _WIN32 |
|
|
711 | #include <WinNT.h> |
|
|
712 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
713 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
714 | #include <mbarrier.h> |
|
|
715 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
716 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
717 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
718 | #elif __xlC__ |
|
|
719 | #define ECB_MEMORY_FENCE __sync () |
|
|
720 | #endif |
|
|
721 | #endif |
|
|
722 | |
|
|
723 | #ifndef ECB_MEMORY_FENCE |
|
|
724 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
725 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
726 | /* not just C11 atomics and atomic accesses */ |
|
|
727 | #include <stdatomic.h> |
|
|
728 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
729 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
730 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
731 | /* for most usages, or gcc and clang have a bug */ |
|
|
732 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
733 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
734 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
735 | /* for all __atomic_thread_fence's except seq_cst */ |
|
|
736 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
737 | #endif |
|
|
738 | #endif |
|
|
739 | |
|
|
740 | #ifndef ECB_MEMORY_FENCE |
|
|
741 | #if !ECB_AVOID_PTHREADS |
|
|
742 | /* |
|
|
743 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
744 | * or failure to find pthread.h, then you should implement |
|
|
745 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
746 | * OR provide pthread.h and link against the posix thread library |
|
|
747 | * of your system. |
|
|
748 | */ |
|
|
749 | #include <pthread.h> |
|
|
750 | #define ECB_NEEDS_PTHREADS 1 |
|
|
751 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
752 | |
|
|
753 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
754 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
755 | #endif |
|
|
756 | #endif |
|
|
757 | |
|
|
758 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
759 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
760 | #endif |
|
|
761 | |
|
|
762 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
763 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
764 | #endif |
|
|
765 | |
|
|
766 | /*****************************************************************************/ |
|
|
767 | |
|
|
768 | #if __cplusplus |
|
|
769 | #define ecb_inline static inline |
|
|
770 | #elif ECB_GCC_VERSION(2,5) |
|
|
771 | #define ecb_inline static __inline__ |
|
|
772 | #elif ECB_C99 |
|
|
773 | #define ecb_inline static inline |
|
|
774 | #else |
|
|
775 | #define ecb_inline static |
|
|
776 | #endif |
|
|
777 | |
|
|
778 | #if ECB_GCC_VERSION(3,3) |
|
|
779 | #define ecb_restrict __restrict__ |
|
|
780 | #elif ECB_C99 |
|
|
781 | #define ecb_restrict restrict |
|
|
782 | #else |
|
|
783 | #define ecb_restrict |
|
|
784 | #endif |
|
|
785 | |
|
|
786 | typedef int ecb_bool; |
|
|
787 | |
|
|
788 | #define ECB_CONCAT_(a, b) a ## b |
|
|
789 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
790 | #define ECB_STRINGIFY_(a) # a |
|
|
791 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
792 | |
|
|
793 | #define ecb_function_ ecb_inline |
|
|
794 | |
|
|
795 | #if ECB_GCC_VERSION(3,1) |
|
|
796 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
797 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
798 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
799 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
800 | #else |
|
|
801 | #define ecb_attribute(attrlist) |
|
|
802 | |
|
|
803 | /* possible C11 impl for integral types |
|
|
804 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
805 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
806 | |
|
|
807 | #define ecb_is_constant(expr) 0 |
|
|
808 | #define ecb_expect(expr,value) (expr) |
|
|
809 | #define ecb_prefetch(addr,rw,locality) |
|
|
810 | #endif |
|
|
811 | |
|
|
812 | /* no emulation for ecb_decltype */ |
|
|
813 | #if ECB_GCC_VERSION(4,5) |
|
|
814 | #define ecb_decltype(x) __decltype(x) |
|
|
815 | #elif ECB_GCC_VERSION(3,0) |
|
|
816 | #define ecb_decltype(x) __typeof(x) |
|
|
817 | #endif |
|
|
818 | |
|
|
819 | #if _MSC_VER >= 1300 |
|
|
820 | #define ecb_deprecated __declspec(deprecated) |
|
|
821 | #else |
|
|
822 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
823 | #endif |
|
|
824 | |
|
|
825 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
826 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
827 | #define ecb_const ecb_attribute ((__const__)) |
|
|
828 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
829 | |
|
|
830 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ |
|
|
831 | #if ECB_C11 |
|
|
832 | #define ecb_noreturn _Noreturn |
|
|
833 | #else |
|
|
834 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
835 | #endif |
|
|
836 | |
|
|
837 | #if ECB_GCC_VERSION(4,3) |
|
|
838 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
839 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
840 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
841 | #else |
|
|
842 | #define ecb_artificial |
|
|
843 | #define ecb_hot |
|
|
844 | #define ecb_cold |
|
|
845 | #endif |
|
|
846 | |
|
|
847 | /* put around conditional expressions if you are very sure that the */ |
|
|
848 | /* expression is mostly true or mostly false. note that these return */ |
|
|
849 | /* booleans, not the expression. */ |
236 | #define expect_false(expr) expect ((expr) != 0, 0) |
850 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
237 | #define expect_true(expr) expect ((expr) != 0, 1) |
851 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
852 | /* for compatibility to the rest of the world */ |
|
|
853 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
854 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
855 | |
|
|
856 | /* count trailing zero bits and count # of one bits */ |
|
|
857 | #if ECB_GCC_VERSION(3,4) |
|
|
858 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
859 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
860 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
861 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
862 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
863 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
864 | /* no popcountll */ |
|
|
865 | #else |
|
|
866 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
867 | ecb_function_ int |
|
|
868 | ecb_ctz32 (uint32_t x) |
|
|
869 | { |
|
|
870 | int r = 0; |
|
|
871 | |
|
|
872 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
873 | |
|
|
874 | #if ECB_branchless_on_i386 |
|
|
875 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
876 | r += !!(x & 0xcccccccc) << 1; |
|
|
877 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
878 | r += !!(x & 0xff00ff00) << 3; |
|
|
879 | r += !!(x & 0xffff0000) << 4; |
|
|
880 | #else |
|
|
881 | if (x & 0xaaaaaaaa) r += 1; |
|
|
882 | if (x & 0xcccccccc) r += 2; |
|
|
883 | if (x & 0xf0f0f0f0) r += 4; |
|
|
884 | if (x & 0xff00ff00) r += 8; |
|
|
885 | if (x & 0xffff0000) r += 16; |
|
|
886 | #endif |
|
|
887 | |
|
|
888 | return r; |
|
|
889 | } |
|
|
890 | |
|
|
891 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
892 | ecb_function_ int |
|
|
893 | ecb_ctz64 (uint64_t x) |
|
|
894 | { |
|
|
895 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
896 | return ecb_ctz32 (x >> shift) + shift; |
|
|
897 | } |
|
|
898 | |
|
|
899 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
900 | ecb_function_ int |
|
|
901 | ecb_popcount32 (uint32_t x) |
|
|
902 | { |
|
|
903 | x -= (x >> 1) & 0x55555555; |
|
|
904 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
905 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
906 | x *= 0x01010101; |
|
|
907 | |
|
|
908 | return x >> 24; |
|
|
909 | } |
|
|
910 | |
|
|
911 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
912 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
913 | { |
|
|
914 | int r = 0; |
|
|
915 | |
|
|
916 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
917 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
918 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
919 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
920 | if (x >> 1) { r += 1; } |
|
|
921 | |
|
|
922 | return r; |
|
|
923 | } |
|
|
924 | |
|
|
925 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
926 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
927 | { |
|
|
928 | int r = 0; |
|
|
929 | |
|
|
930 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
931 | |
|
|
932 | return r + ecb_ld32 (x); |
|
|
933 | } |
|
|
934 | #endif |
|
|
935 | |
|
|
936 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
|
|
937 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
938 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
|
|
939 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
940 | |
|
|
941 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
|
|
942 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
|
|
943 | { |
|
|
944 | return ( (x * 0x0802U & 0x22110U) |
|
|
945 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
946 | } |
|
|
947 | |
|
|
948 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
|
|
949 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
|
|
950 | { |
|
|
951 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
952 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
953 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
954 | x = ( x >> 8 ) | ( x << 8); |
|
|
955 | |
|
|
956 | return x; |
|
|
957 | } |
|
|
958 | |
|
|
959 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
|
|
960 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
|
|
961 | { |
|
|
962 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
963 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
964 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
965 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
966 | x = ( x >> 16 ) | ( x << 16); |
|
|
967 | |
|
|
968 | return x; |
|
|
969 | } |
|
|
970 | |
|
|
971 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
972 | /* so for this version we are lazy */ |
|
|
973 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
974 | ecb_function_ int |
|
|
975 | ecb_popcount64 (uint64_t x) |
|
|
976 | { |
|
|
977 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
978 | } |
|
|
979 | |
|
|
980 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
981 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
982 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
983 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
984 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
985 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
986 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
987 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
988 | |
|
|
989 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
990 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
991 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
992 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
993 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
994 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
995 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
996 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
997 | |
|
|
998 | #if ECB_GCC_VERSION(4,3) |
|
|
999 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1000 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
1001 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
1002 | #else |
|
|
1003 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
1004 | ecb_function_ uint16_t |
|
|
1005 | ecb_bswap16 (uint16_t x) |
|
|
1006 | { |
|
|
1007 | return ecb_rotl16 (x, 8); |
|
|
1008 | } |
|
|
1009 | |
|
|
1010 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
1011 | ecb_function_ uint32_t |
|
|
1012 | ecb_bswap32 (uint32_t x) |
|
|
1013 | { |
|
|
1014 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
1015 | } |
|
|
1016 | |
|
|
1017 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
1018 | ecb_function_ uint64_t |
|
|
1019 | ecb_bswap64 (uint64_t x) |
|
|
1020 | { |
|
|
1021 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
1022 | } |
|
|
1023 | #endif |
|
|
1024 | |
|
|
1025 | #if ECB_GCC_VERSION(4,5) |
|
|
1026 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1027 | #else |
|
|
1028 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1029 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
|
|
1030 | ecb_inline void ecb_unreachable (void) { } |
|
|
1031 | #endif |
|
|
1032 | |
|
|
1033 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1034 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1035 | |
|
|
1036 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
1037 | ecb_inline unsigned char |
|
|
1038 | ecb_byteorder_helper (void) |
|
|
1039 | { |
|
|
1040 | /* the union code still generates code under pressure in gcc, */ |
|
|
1041 | /* but less than using pointers, and always seems to */ |
|
|
1042 | /* successfully return a constant. */ |
|
|
1043 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1044 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1045 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1046 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
1047 | return 0x44; |
|
|
1048 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
1049 | return 0x44; |
|
|
1050 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
1051 | return 0x11; |
|
|
1052 | #else |
|
|
1053 | union |
|
|
1054 | { |
|
|
1055 | uint32_t i; |
|
|
1056 | uint8_t c; |
|
|
1057 | } u = { 0x11223344 }; |
|
|
1058 | return u.c; |
|
|
1059 | #endif |
|
|
1060 | } |
|
|
1061 | |
|
|
1062 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
|
|
1063 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
1064 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
|
|
1065 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
1066 | |
|
|
1067 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1068 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1069 | #else |
|
|
1070 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1071 | #endif |
|
|
1072 | |
|
|
1073 | #if __cplusplus |
|
|
1074 | template<typename T> |
|
|
1075 | static inline T ecb_div_rd (T val, T div) |
|
|
1076 | { |
|
|
1077 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1078 | } |
|
|
1079 | template<typename T> |
|
|
1080 | static inline T ecb_div_ru (T val, T div) |
|
|
1081 | { |
|
|
1082 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1083 | } |
|
|
1084 | #else |
|
|
1085 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1086 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1087 | #endif |
|
|
1088 | |
|
|
1089 | #if ecb_cplusplus_does_not_suck |
|
|
1090 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1091 | template<typename T, int N> |
|
|
1092 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1093 | { |
|
|
1094 | return N; |
|
|
1095 | } |
|
|
1096 | #else |
|
|
1097 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1098 | #endif |
|
|
1099 | |
|
|
1100 | /*******************************************************************************/ |
|
|
1101 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1102 | |
|
|
1103 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1104 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1105 | #if 0 \ |
|
|
1106 | || __i386 || __i386__ \ |
|
|
1107 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
|
|
1108 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1109 | || defined __s390__ || defined __s390x__ \ |
|
|
1110 | || defined __mips__ \ |
|
|
1111 | || defined __alpha__ \ |
|
|
1112 | || defined __hppa__ \ |
|
|
1113 | || defined __ia64__ \ |
|
|
1114 | || defined __m68k__ \ |
|
|
1115 | || defined __m88k__ \ |
|
|
1116 | || defined __sh__ \ |
|
|
1117 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
1118 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1119 | || defined __aarch64__ |
|
|
1120 | #define ECB_STDFP 1 |
|
|
1121 | #include <string.h> /* for memcpy */ |
|
|
1122 | #else |
|
|
1123 | #define ECB_STDFP 0 |
|
|
1124 | #endif |
|
|
1125 | |
|
|
1126 | #ifndef ECB_NO_LIBM |
|
|
1127 | |
|
|
1128 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1129 | |
|
|
1130 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1131 | #ifdef INFINITY |
|
|
1132 | #define ECB_INFINITY INFINITY |
|
|
1133 | #else |
|
|
1134 | #define ECB_INFINITY HUGE_VAL |
|
|
1135 | #endif |
|
|
1136 | |
|
|
1137 | #ifdef NAN |
|
|
1138 | #define ECB_NAN NAN |
|
|
1139 | #else |
|
|
1140 | #define ECB_NAN ECB_INFINITY |
|
|
1141 | #endif |
|
|
1142 | |
|
|
1143 | /* converts an ieee half/binary16 to a float */ |
|
|
1144 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
|
|
1145 | ecb_function_ float |
|
|
1146 | ecb_binary16_to_float (uint16_t x) |
|
|
1147 | { |
|
|
1148 | int e = (x >> 10) & 0x1f; |
|
|
1149 | int m = x & 0x3ff; |
|
|
1150 | float r; |
|
|
1151 | |
|
|
1152 | if (!e ) r = ldexpf (m , -24); |
|
|
1153 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
|
|
1154 | else if (m ) r = ECB_NAN; |
|
|
1155 | else r = ECB_INFINITY; |
|
|
1156 | |
|
|
1157 | return x & 0x8000 ? -r : r; |
|
|
1158 | } |
|
|
1159 | |
|
|
1160 | /* convert a float to ieee single/binary32 */ |
|
|
1161 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
1162 | ecb_function_ uint32_t |
|
|
1163 | ecb_float_to_binary32 (float x) |
|
|
1164 | { |
|
|
1165 | uint32_t r; |
|
|
1166 | |
|
|
1167 | #if ECB_STDFP |
|
|
1168 | memcpy (&r, &x, 4); |
|
|
1169 | #else |
|
|
1170 | /* slow emulation, works for anything but -0 */ |
|
|
1171 | uint32_t m; |
|
|
1172 | int e; |
|
|
1173 | |
|
|
1174 | if (x == 0e0f ) return 0x00000000U; |
|
|
1175 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1176 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1177 | if (x != x ) return 0x7fbfffffU; |
|
|
1178 | |
|
|
1179 | m = frexpf (x, &e) * 0x1000000U; |
|
|
1180 | |
|
|
1181 | r = m & 0x80000000U; |
|
|
1182 | |
|
|
1183 | if (r) |
|
|
1184 | m = -m; |
|
|
1185 | |
|
|
1186 | if (e <= -126) |
|
|
1187 | { |
|
|
1188 | m &= 0xffffffU; |
|
|
1189 | m >>= (-125 - e); |
|
|
1190 | e = -126; |
|
|
1191 | } |
|
|
1192 | |
|
|
1193 | r |= (e + 126) << 23; |
|
|
1194 | r |= m & 0x7fffffU; |
|
|
1195 | #endif |
|
|
1196 | |
|
|
1197 | return r; |
|
|
1198 | } |
|
|
1199 | |
|
|
1200 | /* converts an ieee single/binary32 to a float */ |
|
|
1201 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
1202 | ecb_function_ float |
|
|
1203 | ecb_binary32_to_float (uint32_t x) |
|
|
1204 | { |
|
|
1205 | float r; |
|
|
1206 | |
|
|
1207 | #if ECB_STDFP |
|
|
1208 | memcpy (&r, &x, 4); |
|
|
1209 | #else |
|
|
1210 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1211 | int neg = x >> 31; |
|
|
1212 | int e = (x >> 23) & 0xffU; |
|
|
1213 | |
|
|
1214 | x &= 0x7fffffU; |
|
|
1215 | |
|
|
1216 | if (e) |
|
|
1217 | x |= 0x800000U; |
|
|
1218 | else |
|
|
1219 | e = 1; |
|
|
1220 | |
|
|
1221 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1222 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1223 | |
|
|
1224 | r = neg ? -r : r; |
|
|
1225 | #endif |
|
|
1226 | |
|
|
1227 | return r; |
|
|
1228 | } |
|
|
1229 | |
|
|
1230 | /* convert a double to ieee double/binary64 */ |
|
|
1231 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
1232 | ecb_function_ uint64_t |
|
|
1233 | ecb_double_to_binary64 (double x) |
|
|
1234 | { |
|
|
1235 | uint64_t r; |
|
|
1236 | |
|
|
1237 | #if ECB_STDFP |
|
|
1238 | memcpy (&r, &x, 8); |
|
|
1239 | #else |
|
|
1240 | /* slow emulation, works for anything but -0 */ |
|
|
1241 | uint64_t m; |
|
|
1242 | int e; |
|
|
1243 | |
|
|
1244 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1245 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1246 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1247 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1248 | |
|
|
1249 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1250 | |
|
|
1251 | r = m & 0x8000000000000000;; |
|
|
1252 | |
|
|
1253 | if (r) |
|
|
1254 | m = -m; |
|
|
1255 | |
|
|
1256 | if (e <= -1022) |
|
|
1257 | { |
|
|
1258 | m &= 0x1fffffffffffffU; |
|
|
1259 | m >>= (-1021 - e); |
|
|
1260 | e = -1022; |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1264 | r |= m & 0xfffffffffffffU; |
|
|
1265 | #endif |
|
|
1266 | |
|
|
1267 | return r; |
|
|
1268 | } |
|
|
1269 | |
|
|
1270 | /* converts an ieee double/binary64 to a double */ |
|
|
1271 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
1272 | ecb_function_ double |
|
|
1273 | ecb_binary64_to_double (uint64_t x) |
|
|
1274 | { |
|
|
1275 | double r; |
|
|
1276 | |
|
|
1277 | #if ECB_STDFP |
|
|
1278 | memcpy (&r, &x, 8); |
|
|
1279 | #else |
|
|
1280 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1281 | int neg = x >> 63; |
|
|
1282 | int e = (x >> 52) & 0x7ffU; |
|
|
1283 | |
|
|
1284 | x &= 0xfffffffffffffU; |
|
|
1285 | |
|
|
1286 | if (e) |
|
|
1287 | x |= 0x10000000000000U; |
|
|
1288 | else |
|
|
1289 | e = 1; |
|
|
1290 | |
|
|
1291 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1292 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1293 | |
|
|
1294 | r = neg ? -r : r; |
|
|
1295 | #endif |
|
|
1296 | |
|
|
1297 | return r; |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | #endif |
|
|
1301 | |
|
|
1302 | #endif |
|
|
1303 | |
|
|
1304 | /* ECB.H END */ |
|
|
1305 | |
|
|
1306 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1307 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1308 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1309 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
1310 | * libev, in which cases the memory fences become nops. |
|
|
1311 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1312 | * which will then provide the memory fences. |
|
|
1313 | */ |
|
|
1314 | # error "memory fences not defined for your architecture, please report" |
|
|
1315 | #endif |
|
|
1316 | |
|
|
1317 | #ifndef ECB_MEMORY_FENCE |
|
|
1318 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1319 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1320 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1321 | #endif |
|
|
1322 | |
|
|
1323 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1324 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1325 | #define noinline ecb_noinline |
|
|
1326 | |
238 | #define inline_size static inline |
1327 | #define inline_size ecb_inline |
239 | |
1328 | |
240 | #if EV_MINIMAL |
1329 | #if EV_FEATURE_CODE |
|
|
1330 | # define inline_speed ecb_inline |
|
|
1331 | #else |
241 | # define inline_speed static noinline |
1332 | # define inline_speed static noinline |
|
|
1333 | #endif |
|
|
1334 | |
|
|
1335 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1336 | |
|
|
1337 | #if EV_MINPRI == EV_MAXPRI |
|
|
1338 | # define ABSPRI(w) (((W)w), 0) |
242 | #else |
1339 | #else |
243 | # define inline_speed static inline |
|
|
244 | #endif |
|
|
245 | |
|
|
246 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
247 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
1340 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1341 | #endif |
248 | |
1342 | |
249 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
1343 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
250 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
1344 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
251 | |
1345 | |
252 | typedef ev_watcher *W; |
1346 | typedef ev_watcher *W; |
253 | typedef ev_watcher_list *WL; |
1347 | typedef ev_watcher_list *WL; |
254 | typedef ev_watcher_time *WT; |
1348 | typedef ev_watcher_time *WT; |
255 | |
1349 | |
|
|
1350 | #define ev_active(w) ((W)(w))->active |
|
|
1351 | #define ev_at(w) ((WT)(w))->at |
|
|
1352 | |
|
|
1353 | #if EV_USE_REALTIME |
|
|
1354 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1355 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1356 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1357 | #endif |
|
|
1358 | |
|
|
1359 | #if EV_USE_MONOTONIC |
256 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
1360 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1361 | #endif |
|
|
1362 | |
|
|
1363 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1364 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1365 | #endif |
|
|
1366 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1367 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1368 | #endif |
|
|
1369 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1370 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1371 | #endif |
257 | |
1372 | |
258 | #ifdef _WIN32 |
1373 | #ifdef _WIN32 |
259 | # include "ev_win32.c" |
1374 | # include "ev_win32.c" |
260 | #endif |
1375 | #endif |
261 | |
1376 | |
262 | /*****************************************************************************/ |
1377 | /*****************************************************************************/ |
263 | |
1378 | |
|
|
1379 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1380 | |
|
|
1381 | #if EV_USE_FLOOR |
|
|
1382 | # include <math.h> |
|
|
1383 | # define ev_floor(v) floor (v) |
|
|
1384 | #else |
|
|
1385 | |
|
|
1386 | #include <float.h> |
|
|
1387 | |
|
|
1388 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1389 | static ev_tstamp noinline |
|
|
1390 | ev_floor (ev_tstamp v) |
|
|
1391 | { |
|
|
1392 | /* the choice of shift factor is not terribly important */ |
|
|
1393 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1394 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1395 | #else |
|
|
1396 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1397 | #endif |
|
|
1398 | |
|
|
1399 | /* argument too large for an unsigned long? */ |
|
|
1400 | if (expect_false (v >= shift)) |
|
|
1401 | { |
|
|
1402 | ev_tstamp f; |
|
|
1403 | |
|
|
1404 | if (v == v - 1.) |
|
|
1405 | return v; /* very large number */ |
|
|
1406 | |
|
|
1407 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1408 | return f + ev_floor (v - f); |
|
|
1409 | } |
|
|
1410 | |
|
|
1411 | /* special treatment for negative args? */ |
|
|
1412 | if (expect_false (v < 0.)) |
|
|
1413 | { |
|
|
1414 | ev_tstamp f = -ev_floor (-v); |
|
|
1415 | |
|
|
1416 | return f - (f == v ? 0 : 1); |
|
|
1417 | } |
|
|
1418 | |
|
|
1419 | /* fits into an unsigned long */ |
|
|
1420 | return (unsigned long)v; |
|
|
1421 | } |
|
|
1422 | |
|
|
1423 | #endif |
|
|
1424 | |
|
|
1425 | /*****************************************************************************/ |
|
|
1426 | |
|
|
1427 | #ifdef __linux |
|
|
1428 | # include <sys/utsname.h> |
|
|
1429 | #endif |
|
|
1430 | |
|
|
1431 | static unsigned int noinline ecb_cold |
|
|
1432 | ev_linux_version (void) |
|
|
1433 | { |
|
|
1434 | #ifdef __linux |
|
|
1435 | unsigned int v = 0; |
|
|
1436 | struct utsname buf; |
|
|
1437 | int i; |
|
|
1438 | char *p = buf.release; |
|
|
1439 | |
|
|
1440 | if (uname (&buf)) |
|
|
1441 | return 0; |
|
|
1442 | |
|
|
1443 | for (i = 3+1; --i; ) |
|
|
1444 | { |
|
|
1445 | unsigned int c = 0; |
|
|
1446 | |
|
|
1447 | for (;;) |
|
|
1448 | { |
|
|
1449 | if (*p >= '0' && *p <= '9') |
|
|
1450 | c = c * 10 + *p++ - '0'; |
|
|
1451 | else |
|
|
1452 | { |
|
|
1453 | p += *p == '.'; |
|
|
1454 | break; |
|
|
1455 | } |
|
|
1456 | } |
|
|
1457 | |
|
|
1458 | v = (v << 8) | c; |
|
|
1459 | } |
|
|
1460 | |
|
|
1461 | return v; |
|
|
1462 | #else |
|
|
1463 | return 0; |
|
|
1464 | #endif |
|
|
1465 | } |
|
|
1466 | |
|
|
1467 | /*****************************************************************************/ |
|
|
1468 | |
|
|
1469 | #if EV_AVOID_STDIO |
|
|
1470 | static void noinline ecb_cold |
|
|
1471 | ev_printerr (const char *msg) |
|
|
1472 | { |
|
|
1473 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1474 | } |
|
|
1475 | #endif |
|
|
1476 | |
264 | static void (*syserr_cb)(const char *msg); |
1477 | static void (*syserr_cb)(const char *msg) EV_THROW; |
265 | |
1478 | |
266 | void |
1479 | void ecb_cold |
267 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1480 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW |
268 | { |
1481 | { |
269 | syserr_cb = cb; |
1482 | syserr_cb = cb; |
270 | } |
1483 | } |
271 | |
1484 | |
272 | static void noinline |
1485 | static void noinline ecb_cold |
273 | syserr (const char *msg) |
1486 | ev_syserr (const char *msg) |
274 | { |
1487 | { |
275 | if (!msg) |
1488 | if (!msg) |
276 | msg = "(libev) system error"; |
1489 | msg = "(libev) system error"; |
277 | |
1490 | |
278 | if (syserr_cb) |
1491 | if (syserr_cb) |
279 | syserr_cb (msg); |
1492 | syserr_cb (msg); |
280 | else |
1493 | else |
281 | { |
1494 | { |
|
|
1495 | #if EV_AVOID_STDIO |
|
|
1496 | ev_printerr (msg); |
|
|
1497 | ev_printerr (": "); |
|
|
1498 | ev_printerr (strerror (errno)); |
|
|
1499 | ev_printerr ("\n"); |
|
|
1500 | #else |
282 | perror (msg); |
1501 | perror (msg); |
|
|
1502 | #endif |
283 | abort (); |
1503 | abort (); |
284 | } |
1504 | } |
285 | } |
1505 | } |
286 | |
1506 | |
|
|
1507 | static void * |
|
|
1508 | ev_realloc_emul (void *ptr, long size) EV_THROW |
|
|
1509 | { |
|
|
1510 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1511 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1512 | * the single unix specification, so work around them here. |
|
|
1513 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1514 | * despite documenting it otherwise. |
|
|
1515 | */ |
|
|
1516 | |
|
|
1517 | if (size) |
|
|
1518 | return realloc (ptr, size); |
|
|
1519 | |
|
|
1520 | free (ptr); |
|
|
1521 | return 0; |
|
|
1522 | } |
|
|
1523 | |
287 | static void *(*alloc)(void *ptr, long size); |
1524 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
288 | |
1525 | |
289 | void |
1526 | void ecb_cold |
290 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1527 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW |
291 | { |
1528 | { |
292 | alloc = cb; |
1529 | alloc = cb; |
293 | } |
1530 | } |
294 | |
1531 | |
295 | inline_speed void * |
1532 | inline_speed void * |
296 | ev_realloc (void *ptr, long size) |
1533 | ev_realloc (void *ptr, long size) |
297 | { |
1534 | { |
298 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
1535 | ptr = alloc (ptr, size); |
299 | |
1536 | |
300 | if (!ptr && size) |
1537 | if (!ptr && size) |
301 | { |
1538 | { |
|
|
1539 | #if EV_AVOID_STDIO |
|
|
1540 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1541 | #else |
302 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
1542 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1543 | #endif |
303 | abort (); |
1544 | abort (); |
304 | } |
1545 | } |
305 | |
1546 | |
306 | return ptr; |
1547 | return ptr; |
307 | } |
1548 | } |
… | |
… | |
309 | #define ev_malloc(size) ev_realloc (0, (size)) |
1550 | #define ev_malloc(size) ev_realloc (0, (size)) |
310 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
1551 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
311 | |
1552 | |
312 | /*****************************************************************************/ |
1553 | /*****************************************************************************/ |
313 | |
1554 | |
|
|
1555 | /* set in reify when reification needed */ |
|
|
1556 | #define EV_ANFD_REIFY 1 |
|
|
1557 | |
|
|
1558 | /* file descriptor info structure */ |
314 | typedef struct |
1559 | typedef struct |
315 | { |
1560 | { |
316 | WL head; |
1561 | WL head; |
317 | unsigned char events; |
1562 | unsigned char events; /* the events watched for */ |
|
|
1563 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1564 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
318 | unsigned char reify; |
1565 | unsigned char unused; |
|
|
1566 | #if EV_USE_EPOLL |
|
|
1567 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1568 | #endif |
319 | #if EV_SELECT_IS_WINSOCKET |
1569 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
320 | SOCKET handle; |
1570 | SOCKET handle; |
321 | #endif |
1571 | #endif |
|
|
1572 | #if EV_USE_IOCP |
|
|
1573 | OVERLAPPED or, ow; |
|
|
1574 | #endif |
322 | } ANFD; |
1575 | } ANFD; |
323 | |
1576 | |
|
|
1577 | /* stores the pending event set for a given watcher */ |
324 | typedef struct |
1578 | typedef struct |
325 | { |
1579 | { |
326 | W w; |
1580 | W w; |
327 | int events; |
1581 | int events; /* the pending event set for the given watcher */ |
328 | } ANPENDING; |
1582 | } ANPENDING; |
329 | |
1583 | |
330 | #if EV_USE_INOTIFY |
1584 | #if EV_USE_INOTIFY |
|
|
1585 | /* hash table entry per inotify-id */ |
331 | typedef struct |
1586 | typedef struct |
332 | { |
1587 | { |
333 | WL head; |
1588 | WL head; |
334 | } ANFS; |
1589 | } ANFS; |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | /* Heap Entry */ |
|
|
1593 | #if EV_HEAP_CACHE_AT |
|
|
1594 | /* a heap element */ |
|
|
1595 | typedef struct { |
|
|
1596 | ev_tstamp at; |
|
|
1597 | WT w; |
|
|
1598 | } ANHE; |
|
|
1599 | |
|
|
1600 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1601 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1602 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1603 | #else |
|
|
1604 | /* a heap element */ |
|
|
1605 | typedef WT ANHE; |
|
|
1606 | |
|
|
1607 | #define ANHE_w(he) (he) |
|
|
1608 | #define ANHE_at(he) (he)->at |
|
|
1609 | #define ANHE_at_cache(he) |
335 | #endif |
1610 | #endif |
336 | |
1611 | |
337 | #if EV_MULTIPLICITY |
1612 | #if EV_MULTIPLICITY |
338 | |
1613 | |
339 | struct ev_loop |
1614 | struct ev_loop |
… | |
… | |
345 | #undef VAR |
1620 | #undef VAR |
346 | }; |
1621 | }; |
347 | #include "ev_wrap.h" |
1622 | #include "ev_wrap.h" |
348 | |
1623 | |
349 | static struct ev_loop default_loop_struct; |
1624 | static struct ev_loop default_loop_struct; |
350 | struct ev_loop *ev_default_loop_ptr; |
1625 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
351 | |
1626 | |
352 | #else |
1627 | #else |
353 | |
1628 | |
354 | ev_tstamp ev_rt_now; |
1629 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
355 | #define VAR(name,decl) static decl; |
1630 | #define VAR(name,decl) static decl; |
356 | #include "ev_vars.h" |
1631 | #include "ev_vars.h" |
357 | #undef VAR |
1632 | #undef VAR |
358 | |
1633 | |
359 | static int ev_default_loop_ptr; |
1634 | static int ev_default_loop_ptr; |
360 | |
1635 | |
361 | #endif |
1636 | #endif |
362 | |
1637 | |
|
|
1638 | #if EV_FEATURE_API |
|
|
1639 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
1640 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
1641 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
1642 | #else |
|
|
1643 | # define EV_RELEASE_CB (void)0 |
|
|
1644 | # define EV_ACQUIRE_CB (void)0 |
|
|
1645 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
1646 | #endif |
|
|
1647 | |
|
|
1648 | #define EVBREAK_RECURSE 0x80 |
|
|
1649 | |
363 | /*****************************************************************************/ |
1650 | /*****************************************************************************/ |
364 | |
1651 | |
|
|
1652 | #ifndef EV_HAVE_EV_TIME |
365 | ev_tstamp |
1653 | ev_tstamp |
366 | ev_time (void) |
1654 | ev_time (void) EV_THROW |
367 | { |
1655 | { |
368 | #if EV_USE_REALTIME |
1656 | #if EV_USE_REALTIME |
|
|
1657 | if (expect_true (have_realtime)) |
|
|
1658 | { |
369 | struct timespec ts; |
1659 | struct timespec ts; |
370 | clock_gettime (CLOCK_REALTIME, &ts); |
1660 | clock_gettime (CLOCK_REALTIME, &ts); |
371 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1661 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
372 | #else |
1662 | } |
|
|
1663 | #endif |
|
|
1664 | |
373 | struct timeval tv; |
1665 | struct timeval tv; |
374 | gettimeofday (&tv, 0); |
1666 | gettimeofday (&tv, 0); |
375 | return tv.tv_sec + tv.tv_usec * 1e-6; |
1667 | return tv.tv_sec + tv.tv_usec * 1e-6; |
376 | #endif |
|
|
377 | } |
1668 | } |
|
|
1669 | #endif |
378 | |
1670 | |
379 | ev_tstamp inline_size |
1671 | inline_size ev_tstamp |
380 | get_clock (void) |
1672 | get_clock (void) |
381 | { |
1673 | { |
382 | #if EV_USE_MONOTONIC |
1674 | #if EV_USE_MONOTONIC |
383 | if (expect_true (have_monotonic)) |
1675 | if (expect_true (have_monotonic)) |
384 | { |
1676 | { |
… | |
… | |
391 | return ev_time (); |
1683 | return ev_time (); |
392 | } |
1684 | } |
393 | |
1685 | |
394 | #if EV_MULTIPLICITY |
1686 | #if EV_MULTIPLICITY |
395 | ev_tstamp |
1687 | ev_tstamp |
396 | ev_now (EV_P) |
1688 | ev_now (EV_P) EV_THROW |
397 | { |
1689 | { |
398 | return ev_rt_now; |
1690 | return ev_rt_now; |
399 | } |
1691 | } |
400 | #endif |
1692 | #endif |
401 | |
1693 | |
402 | int inline_size |
1694 | void |
|
|
1695 | ev_sleep (ev_tstamp delay) EV_THROW |
|
|
1696 | { |
|
|
1697 | if (delay > 0.) |
|
|
1698 | { |
|
|
1699 | #if EV_USE_NANOSLEEP |
|
|
1700 | struct timespec ts; |
|
|
1701 | |
|
|
1702 | EV_TS_SET (ts, delay); |
|
|
1703 | nanosleep (&ts, 0); |
|
|
1704 | #elif defined _WIN32 |
|
|
1705 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
1706 | #else |
|
|
1707 | struct timeval tv; |
|
|
1708 | |
|
|
1709 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
1710 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
1711 | /* by older ones */ |
|
|
1712 | EV_TV_SET (tv, delay); |
|
|
1713 | select (0, 0, 0, 0, &tv); |
|
|
1714 | #endif |
|
|
1715 | } |
|
|
1716 | } |
|
|
1717 | |
|
|
1718 | /*****************************************************************************/ |
|
|
1719 | |
|
|
1720 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
1721 | |
|
|
1722 | /* find a suitable new size for the given array, */ |
|
|
1723 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
1724 | inline_size int |
403 | array_nextsize (int elem, int cur, int cnt) |
1725 | array_nextsize (int elem, int cur, int cnt) |
404 | { |
1726 | { |
405 | int ncur = cur + 1; |
1727 | int ncur = cur + 1; |
406 | |
1728 | |
407 | do |
1729 | do |
408 | ncur <<= 1; |
1730 | ncur <<= 1; |
409 | while (cnt > ncur); |
1731 | while (cnt > ncur); |
410 | |
1732 | |
411 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
1733 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
412 | if (elem * ncur > 4096) |
1734 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
413 | { |
1735 | { |
414 | ncur *= elem; |
1736 | ncur *= elem; |
415 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
1737 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
416 | ncur = ncur - sizeof (void *) * 4; |
1738 | ncur = ncur - sizeof (void *) * 4; |
417 | ncur /= elem; |
1739 | ncur /= elem; |
418 | } |
1740 | } |
419 | |
1741 | |
420 | return ncur; |
1742 | return ncur; |
421 | } |
1743 | } |
422 | |
1744 | |
423 | static noinline void * |
1745 | static void * noinline ecb_cold |
424 | array_realloc (int elem, void *base, int *cur, int cnt) |
1746 | array_realloc (int elem, void *base, int *cur, int cnt) |
425 | { |
1747 | { |
426 | *cur = array_nextsize (elem, *cur, cnt); |
1748 | *cur = array_nextsize (elem, *cur, cnt); |
427 | return ev_realloc (base, elem * *cur); |
1749 | return ev_realloc (base, elem * *cur); |
428 | } |
1750 | } |
|
|
1751 | |
|
|
1752 | #define array_init_zero(base,count) \ |
|
|
1753 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
429 | |
1754 | |
430 | #define array_needsize(type,base,cur,cnt,init) \ |
1755 | #define array_needsize(type,base,cur,cnt,init) \ |
431 | if (expect_false ((cnt) > (cur))) \ |
1756 | if (expect_false ((cnt) > (cur))) \ |
432 | { \ |
1757 | { \ |
433 | int ocur_ = (cur); \ |
1758 | int ecb_unused ocur_ = (cur); \ |
434 | (base) = (type *)array_realloc \ |
1759 | (base) = (type *)array_realloc \ |
435 | (sizeof (type), (base), &(cur), (cnt)); \ |
1760 | (sizeof (type), (base), &(cur), (cnt)); \ |
436 | init ((base) + (ocur_), (cur) - ocur_); \ |
1761 | init ((base) + (ocur_), (cur) - ocur_); \ |
437 | } |
1762 | } |
438 | |
1763 | |
… | |
… | |
445 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
1770 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
446 | } |
1771 | } |
447 | #endif |
1772 | #endif |
448 | |
1773 | |
449 | #define array_free(stem, idx) \ |
1774 | #define array_free(stem, idx) \ |
450 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
1775 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
451 | |
1776 | |
452 | /*****************************************************************************/ |
1777 | /*****************************************************************************/ |
453 | |
1778 | |
|
|
1779 | /* dummy callback for pending events */ |
|
|
1780 | static void noinline |
|
|
1781 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
1782 | { |
|
|
1783 | } |
|
|
1784 | |
454 | void noinline |
1785 | void noinline |
455 | ev_feed_event (EV_P_ void *w, int revents) |
1786 | ev_feed_event (EV_P_ void *w, int revents) EV_THROW |
456 | { |
1787 | { |
457 | W w_ = (W)w; |
1788 | W w_ = (W)w; |
458 | int pri = ABSPRI (w_); |
1789 | int pri = ABSPRI (w_); |
459 | |
1790 | |
460 | if (expect_false (w_->pending)) |
1791 | if (expect_false (w_->pending)) |
… | |
… | |
464 | w_->pending = ++pendingcnt [pri]; |
1795 | w_->pending = ++pendingcnt [pri]; |
465 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
1796 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
466 | pendings [pri][w_->pending - 1].w = w_; |
1797 | pendings [pri][w_->pending - 1].w = w_; |
467 | pendings [pri][w_->pending - 1].events = revents; |
1798 | pendings [pri][w_->pending - 1].events = revents; |
468 | } |
1799 | } |
469 | } |
|
|
470 | |
1800 | |
471 | void inline_size |
1801 | pendingpri = NUMPRI - 1; |
|
|
1802 | } |
|
|
1803 | |
|
|
1804 | inline_speed void |
|
|
1805 | feed_reverse (EV_P_ W w) |
|
|
1806 | { |
|
|
1807 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
1808 | rfeeds [rfeedcnt++] = w; |
|
|
1809 | } |
|
|
1810 | |
|
|
1811 | inline_size void |
|
|
1812 | feed_reverse_done (EV_P_ int revents) |
|
|
1813 | { |
|
|
1814 | do |
|
|
1815 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
1816 | while (rfeedcnt); |
|
|
1817 | } |
|
|
1818 | |
|
|
1819 | inline_speed void |
472 | queue_events (EV_P_ W *events, int eventcnt, int type) |
1820 | queue_events (EV_P_ W *events, int eventcnt, int type) |
473 | { |
1821 | { |
474 | int i; |
1822 | int i; |
475 | |
1823 | |
476 | for (i = 0; i < eventcnt; ++i) |
1824 | for (i = 0; i < eventcnt; ++i) |
477 | ev_feed_event (EV_A_ events [i], type); |
1825 | ev_feed_event (EV_A_ events [i], type); |
478 | } |
1826 | } |
479 | |
1827 | |
480 | /*****************************************************************************/ |
1828 | /*****************************************************************************/ |
481 | |
1829 | |
482 | void inline_size |
1830 | inline_speed void |
483 | anfds_init (ANFD *base, int count) |
|
|
484 | { |
|
|
485 | while (count--) |
|
|
486 | { |
|
|
487 | base->head = 0; |
|
|
488 | base->events = EV_NONE; |
|
|
489 | base->reify = 0; |
|
|
490 | |
|
|
491 | ++base; |
|
|
492 | } |
|
|
493 | } |
|
|
494 | |
|
|
495 | void inline_speed |
|
|
496 | fd_event (EV_P_ int fd, int revents) |
1831 | fd_event_nocheck (EV_P_ int fd, int revents) |
497 | { |
1832 | { |
498 | ANFD *anfd = anfds + fd; |
1833 | ANFD *anfd = anfds + fd; |
499 | ev_io *w; |
1834 | ev_io *w; |
500 | |
1835 | |
501 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1836 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
505 | if (ev) |
1840 | if (ev) |
506 | ev_feed_event (EV_A_ (W)w, ev); |
1841 | ev_feed_event (EV_A_ (W)w, ev); |
507 | } |
1842 | } |
508 | } |
1843 | } |
509 | |
1844 | |
|
|
1845 | /* do not submit kernel events for fds that have reify set */ |
|
|
1846 | /* because that means they changed while we were polling for new events */ |
|
|
1847 | inline_speed void |
|
|
1848 | fd_event (EV_P_ int fd, int revents) |
|
|
1849 | { |
|
|
1850 | ANFD *anfd = anfds + fd; |
|
|
1851 | |
|
|
1852 | if (expect_true (!anfd->reify)) |
|
|
1853 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1854 | } |
|
|
1855 | |
510 | void |
1856 | void |
511 | ev_feed_fd_event (EV_P_ int fd, int revents) |
1857 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW |
512 | { |
1858 | { |
513 | if (fd >= 0 && fd < anfdmax) |
1859 | if (fd >= 0 && fd < anfdmax) |
514 | fd_event (EV_A_ fd, revents); |
1860 | fd_event_nocheck (EV_A_ fd, revents); |
515 | } |
1861 | } |
516 | |
1862 | |
517 | void inline_size |
1863 | /* make sure the external fd watch events are in-sync */ |
|
|
1864 | /* with the kernel/libev internal state */ |
|
|
1865 | inline_size void |
518 | fd_reify (EV_P) |
1866 | fd_reify (EV_P) |
519 | { |
1867 | { |
520 | int i; |
1868 | int i; |
|
|
1869 | |
|
|
1870 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1871 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1872 | { |
|
|
1873 | int fd = fdchanges [i]; |
|
|
1874 | ANFD *anfd = anfds + fd; |
|
|
1875 | |
|
|
1876 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1877 | { |
|
|
1878 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1879 | |
|
|
1880 | if (handle != anfd->handle) |
|
|
1881 | { |
|
|
1882 | unsigned long arg; |
|
|
1883 | |
|
|
1884 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1885 | |
|
|
1886 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1887 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1888 | anfd->events = 0; |
|
|
1889 | anfd->handle = handle; |
|
|
1890 | } |
|
|
1891 | } |
|
|
1892 | } |
|
|
1893 | #endif |
521 | |
1894 | |
522 | for (i = 0; i < fdchangecnt; ++i) |
1895 | for (i = 0; i < fdchangecnt; ++i) |
523 | { |
1896 | { |
524 | int fd = fdchanges [i]; |
1897 | int fd = fdchanges [i]; |
525 | ANFD *anfd = anfds + fd; |
1898 | ANFD *anfd = anfds + fd; |
526 | ev_io *w; |
1899 | ev_io *w; |
527 | |
1900 | |
528 | int events = 0; |
1901 | unsigned char o_events = anfd->events; |
|
|
1902 | unsigned char o_reify = anfd->reify; |
529 | |
1903 | |
530 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1904 | anfd->reify = 0; |
531 | events |= w->events; |
|
|
532 | |
1905 | |
533 | #if EV_SELECT_IS_WINSOCKET |
1906 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
534 | if (events) |
|
|
535 | { |
1907 | { |
536 | unsigned long argp; |
1908 | anfd->events = 0; |
537 | anfd->handle = _get_osfhandle (fd); |
1909 | |
538 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
1910 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1911 | anfd->events |= (unsigned char)w->events; |
|
|
1912 | |
|
|
1913 | if (o_events != anfd->events) |
|
|
1914 | o_reify = EV__IOFDSET; /* actually |= */ |
539 | } |
1915 | } |
540 | #endif |
|
|
541 | |
1916 | |
542 | anfd->reify = 0; |
1917 | if (o_reify & EV__IOFDSET) |
543 | |
|
|
544 | backend_modify (EV_A_ fd, anfd->events, events); |
1918 | backend_modify (EV_A_ fd, o_events, anfd->events); |
545 | anfd->events = events; |
|
|
546 | } |
1919 | } |
547 | |
1920 | |
548 | fdchangecnt = 0; |
1921 | fdchangecnt = 0; |
549 | } |
1922 | } |
550 | |
1923 | |
551 | void inline_size |
1924 | /* something about the given fd changed */ |
|
|
1925 | inline_size void |
552 | fd_change (EV_P_ int fd) |
1926 | fd_change (EV_P_ int fd, int flags) |
553 | { |
1927 | { |
554 | if (expect_false (anfds [fd].reify)) |
1928 | unsigned char reify = anfds [fd].reify; |
555 | return; |
|
|
556 | |
|
|
557 | anfds [fd].reify = 1; |
1929 | anfds [fd].reify |= flags; |
558 | |
1930 | |
|
|
1931 | if (expect_true (!reify)) |
|
|
1932 | { |
559 | ++fdchangecnt; |
1933 | ++fdchangecnt; |
560 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
1934 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
561 | fdchanges [fdchangecnt - 1] = fd; |
1935 | fdchanges [fdchangecnt - 1] = fd; |
|
|
1936 | } |
562 | } |
1937 | } |
563 | |
1938 | |
564 | void inline_speed |
1939 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
1940 | inline_speed void ecb_cold |
565 | fd_kill (EV_P_ int fd) |
1941 | fd_kill (EV_P_ int fd) |
566 | { |
1942 | { |
567 | ev_io *w; |
1943 | ev_io *w; |
568 | |
1944 | |
569 | while ((w = (ev_io *)anfds [fd].head)) |
1945 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
571 | ev_io_stop (EV_A_ w); |
1947 | ev_io_stop (EV_A_ w); |
572 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1948 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
573 | } |
1949 | } |
574 | } |
1950 | } |
575 | |
1951 | |
576 | int inline_size |
1952 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1953 | inline_size int ecb_cold |
577 | fd_valid (int fd) |
1954 | fd_valid (int fd) |
578 | { |
1955 | { |
579 | #ifdef _WIN32 |
1956 | #ifdef _WIN32 |
580 | return _get_osfhandle (fd) != -1; |
1957 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
581 | #else |
1958 | #else |
582 | return fcntl (fd, F_GETFD) != -1; |
1959 | return fcntl (fd, F_GETFD) != -1; |
583 | #endif |
1960 | #endif |
584 | } |
1961 | } |
585 | |
1962 | |
586 | /* called on EBADF to verify fds */ |
1963 | /* called on EBADF to verify fds */ |
587 | static void noinline |
1964 | static void noinline ecb_cold |
588 | fd_ebadf (EV_P) |
1965 | fd_ebadf (EV_P) |
589 | { |
1966 | { |
590 | int fd; |
1967 | int fd; |
591 | |
1968 | |
592 | for (fd = 0; fd < anfdmax; ++fd) |
1969 | for (fd = 0; fd < anfdmax; ++fd) |
593 | if (anfds [fd].events) |
1970 | if (anfds [fd].events) |
594 | if (!fd_valid (fd) == -1 && errno == EBADF) |
1971 | if (!fd_valid (fd) && errno == EBADF) |
595 | fd_kill (EV_A_ fd); |
1972 | fd_kill (EV_A_ fd); |
596 | } |
1973 | } |
597 | |
1974 | |
598 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1975 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
599 | static void noinline |
1976 | static void noinline ecb_cold |
600 | fd_enomem (EV_P) |
1977 | fd_enomem (EV_P) |
601 | { |
1978 | { |
602 | int fd; |
1979 | int fd; |
603 | |
1980 | |
604 | for (fd = anfdmax; fd--; ) |
1981 | for (fd = anfdmax; fd--; ) |
605 | if (anfds [fd].events) |
1982 | if (anfds [fd].events) |
606 | { |
1983 | { |
607 | fd_kill (EV_A_ fd); |
1984 | fd_kill (EV_A_ fd); |
608 | return; |
1985 | break; |
609 | } |
1986 | } |
610 | } |
1987 | } |
611 | |
1988 | |
612 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
1989 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
613 | static void noinline |
1990 | static void noinline |
… | |
… | |
617 | |
1994 | |
618 | for (fd = 0; fd < anfdmax; ++fd) |
1995 | for (fd = 0; fd < anfdmax; ++fd) |
619 | if (anfds [fd].events) |
1996 | if (anfds [fd].events) |
620 | { |
1997 | { |
621 | anfds [fd].events = 0; |
1998 | anfds [fd].events = 0; |
622 | fd_change (EV_A_ fd); |
1999 | anfds [fd].emask = 0; |
|
|
2000 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
623 | } |
2001 | } |
624 | } |
2002 | } |
625 | |
2003 | |
626 | /*****************************************************************************/ |
2004 | /* used to prepare libev internal fd's */ |
627 | |
2005 | /* this is not fork-safe */ |
628 | void inline_speed |
2006 | inline_speed void |
629 | upheap (WT *heap, int k) |
|
|
630 | { |
|
|
631 | WT w = heap [k]; |
|
|
632 | |
|
|
633 | while (k && heap [k >> 1]->at > w->at) |
|
|
634 | { |
|
|
635 | heap [k] = heap [k >> 1]; |
|
|
636 | ((W)heap [k])->active = k + 1; |
|
|
637 | k >>= 1; |
|
|
638 | } |
|
|
639 | |
|
|
640 | heap [k] = w; |
|
|
641 | ((W)heap [k])->active = k + 1; |
|
|
642 | |
|
|
643 | } |
|
|
644 | |
|
|
645 | void inline_speed |
|
|
646 | downheap (WT *heap, int N, int k) |
|
|
647 | { |
|
|
648 | WT w = heap [k]; |
|
|
649 | |
|
|
650 | while (k < (N >> 1)) |
|
|
651 | { |
|
|
652 | int j = k << 1; |
|
|
653 | |
|
|
654 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
655 | ++j; |
|
|
656 | |
|
|
657 | if (w->at <= heap [j]->at) |
|
|
658 | break; |
|
|
659 | |
|
|
660 | heap [k] = heap [j]; |
|
|
661 | ((W)heap [k])->active = k + 1; |
|
|
662 | k = j; |
|
|
663 | } |
|
|
664 | |
|
|
665 | heap [k] = w; |
|
|
666 | ((W)heap [k])->active = k + 1; |
|
|
667 | } |
|
|
668 | |
|
|
669 | void inline_size |
|
|
670 | adjustheap (WT *heap, int N, int k) |
|
|
671 | { |
|
|
672 | upheap (heap, k); |
|
|
673 | downheap (heap, N, k); |
|
|
674 | } |
|
|
675 | |
|
|
676 | /*****************************************************************************/ |
|
|
677 | |
|
|
678 | typedef struct |
|
|
679 | { |
|
|
680 | WL head; |
|
|
681 | sig_atomic_t volatile gotsig; |
|
|
682 | } ANSIG; |
|
|
683 | |
|
|
684 | static ANSIG *signals; |
|
|
685 | static int signalmax; |
|
|
686 | |
|
|
687 | static int sigpipe [2]; |
|
|
688 | static sig_atomic_t volatile gotsig; |
|
|
689 | static ev_io sigev; |
|
|
690 | |
|
|
691 | void inline_size |
|
|
692 | signals_init (ANSIG *base, int count) |
|
|
693 | { |
|
|
694 | while (count--) |
|
|
695 | { |
|
|
696 | base->head = 0; |
|
|
697 | base->gotsig = 0; |
|
|
698 | |
|
|
699 | ++base; |
|
|
700 | } |
|
|
701 | } |
|
|
702 | |
|
|
703 | static void |
|
|
704 | sighandler (int signum) |
|
|
705 | { |
|
|
706 | #if _WIN32 |
|
|
707 | signal (signum, sighandler); |
|
|
708 | #endif |
|
|
709 | |
|
|
710 | signals [signum - 1].gotsig = 1; |
|
|
711 | |
|
|
712 | if (!gotsig) |
|
|
713 | { |
|
|
714 | int old_errno = errno; |
|
|
715 | gotsig = 1; |
|
|
716 | write (sigpipe [1], &signum, 1); |
|
|
717 | errno = old_errno; |
|
|
718 | } |
|
|
719 | } |
|
|
720 | |
|
|
721 | void noinline |
|
|
722 | ev_feed_signal_event (EV_P_ int signum) |
|
|
723 | { |
|
|
724 | WL w; |
|
|
725 | |
|
|
726 | #if EV_MULTIPLICITY |
|
|
727 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
728 | #endif |
|
|
729 | |
|
|
730 | --signum; |
|
|
731 | |
|
|
732 | if (signum < 0 || signum >= signalmax) |
|
|
733 | return; |
|
|
734 | |
|
|
735 | signals [signum].gotsig = 0; |
|
|
736 | |
|
|
737 | for (w = signals [signum].head; w; w = w->next) |
|
|
738 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
739 | } |
|
|
740 | |
|
|
741 | static void |
|
|
742 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
743 | { |
|
|
744 | int signum; |
|
|
745 | |
|
|
746 | read (sigpipe [0], &revents, 1); |
|
|
747 | gotsig = 0; |
|
|
748 | |
|
|
749 | for (signum = signalmax; signum--; ) |
|
|
750 | if (signals [signum].gotsig) |
|
|
751 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
752 | } |
|
|
753 | |
|
|
754 | void inline_speed |
|
|
755 | fd_intern (int fd) |
2007 | fd_intern (int fd) |
756 | { |
2008 | { |
757 | #ifdef _WIN32 |
2009 | #ifdef _WIN32 |
758 | int arg = 1; |
2010 | unsigned long arg = 1; |
759 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
2011 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
760 | #else |
2012 | #else |
761 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
2013 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
762 | fcntl (fd, F_SETFL, O_NONBLOCK); |
2014 | fcntl (fd, F_SETFL, O_NONBLOCK); |
763 | #endif |
2015 | #endif |
764 | } |
2016 | } |
765 | |
2017 | |
766 | static void noinline |
|
|
767 | siginit (EV_P) |
|
|
768 | { |
|
|
769 | fd_intern (sigpipe [0]); |
|
|
770 | fd_intern (sigpipe [1]); |
|
|
771 | |
|
|
772 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
773 | ev_io_start (EV_A_ &sigev); |
|
|
774 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
775 | } |
|
|
776 | |
|
|
777 | /*****************************************************************************/ |
2018 | /*****************************************************************************/ |
778 | |
2019 | |
779 | static ev_child *childs [EV_PID_HASHSIZE]; |
2020 | /* |
|
|
2021 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
2022 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
2023 | * the branching factor of the d-tree. |
|
|
2024 | */ |
780 | |
2025 | |
|
|
2026 | /* |
|
|
2027 | * at the moment we allow libev the luxury of two heaps, |
|
|
2028 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
2029 | * which is more cache-efficient. |
|
|
2030 | * the difference is about 5% with 50000+ watchers. |
|
|
2031 | */ |
|
|
2032 | #if EV_USE_4HEAP |
|
|
2033 | |
|
|
2034 | #define DHEAP 4 |
|
|
2035 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
2036 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
2037 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
2038 | |
|
|
2039 | /* away from the root */ |
|
|
2040 | inline_speed void |
|
|
2041 | downheap (ANHE *heap, int N, int k) |
|
|
2042 | { |
|
|
2043 | ANHE he = heap [k]; |
|
|
2044 | ANHE *E = heap + N + HEAP0; |
|
|
2045 | |
|
|
2046 | for (;;) |
|
|
2047 | { |
|
|
2048 | ev_tstamp minat; |
|
|
2049 | ANHE *minpos; |
|
|
2050 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
2051 | |
|
|
2052 | /* find minimum child */ |
|
|
2053 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
2054 | { |
|
|
2055 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2056 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2057 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2058 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2059 | } |
|
|
2060 | else if (pos < E) |
|
|
2061 | { |
|
|
2062 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2063 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2064 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2065 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2066 | } |
|
|
2067 | else |
|
|
2068 | break; |
|
|
2069 | |
|
|
2070 | if (ANHE_at (he) <= minat) |
|
|
2071 | break; |
|
|
2072 | |
|
|
2073 | heap [k] = *minpos; |
|
|
2074 | ev_active (ANHE_w (*minpos)) = k; |
|
|
2075 | |
|
|
2076 | k = minpos - heap; |
|
|
2077 | } |
|
|
2078 | |
|
|
2079 | heap [k] = he; |
|
|
2080 | ev_active (ANHE_w (he)) = k; |
|
|
2081 | } |
|
|
2082 | |
|
|
2083 | #else /* 4HEAP */ |
|
|
2084 | |
|
|
2085 | #define HEAP0 1 |
|
|
2086 | #define HPARENT(k) ((k) >> 1) |
|
|
2087 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
2088 | |
|
|
2089 | /* away from the root */ |
|
|
2090 | inline_speed void |
|
|
2091 | downheap (ANHE *heap, int N, int k) |
|
|
2092 | { |
|
|
2093 | ANHE he = heap [k]; |
|
|
2094 | |
|
|
2095 | for (;;) |
|
|
2096 | { |
|
|
2097 | int c = k << 1; |
|
|
2098 | |
|
|
2099 | if (c >= N + HEAP0) |
|
|
2100 | break; |
|
|
2101 | |
|
|
2102 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
2103 | ? 1 : 0; |
|
|
2104 | |
|
|
2105 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
2106 | break; |
|
|
2107 | |
|
|
2108 | heap [k] = heap [c]; |
|
|
2109 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2110 | |
|
|
2111 | k = c; |
|
|
2112 | } |
|
|
2113 | |
|
|
2114 | heap [k] = he; |
|
|
2115 | ev_active (ANHE_w (he)) = k; |
|
|
2116 | } |
|
|
2117 | #endif |
|
|
2118 | |
|
|
2119 | /* towards the root */ |
|
|
2120 | inline_speed void |
|
|
2121 | upheap (ANHE *heap, int k) |
|
|
2122 | { |
|
|
2123 | ANHE he = heap [k]; |
|
|
2124 | |
|
|
2125 | for (;;) |
|
|
2126 | { |
|
|
2127 | int p = HPARENT (k); |
|
|
2128 | |
|
|
2129 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
2130 | break; |
|
|
2131 | |
|
|
2132 | heap [k] = heap [p]; |
|
|
2133 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2134 | k = p; |
|
|
2135 | } |
|
|
2136 | |
|
|
2137 | heap [k] = he; |
|
|
2138 | ev_active (ANHE_w (he)) = k; |
|
|
2139 | } |
|
|
2140 | |
|
|
2141 | /* move an element suitably so it is in a correct place */ |
|
|
2142 | inline_size void |
|
|
2143 | adjustheap (ANHE *heap, int N, int k) |
|
|
2144 | { |
|
|
2145 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
2146 | upheap (heap, k); |
|
|
2147 | else |
|
|
2148 | downheap (heap, N, k); |
|
|
2149 | } |
|
|
2150 | |
|
|
2151 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
2152 | inline_size void |
|
|
2153 | reheap (ANHE *heap, int N) |
|
|
2154 | { |
|
|
2155 | int i; |
|
|
2156 | |
|
|
2157 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
2158 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
2159 | for (i = 0; i < N; ++i) |
|
|
2160 | upheap (heap, i + HEAP0); |
|
|
2161 | } |
|
|
2162 | |
|
|
2163 | /*****************************************************************************/ |
|
|
2164 | |
|
|
2165 | /* associate signal watchers to a signal signal */ |
|
|
2166 | typedef struct |
|
|
2167 | { |
|
|
2168 | EV_ATOMIC_T pending; |
|
|
2169 | #if EV_MULTIPLICITY |
|
|
2170 | EV_P; |
|
|
2171 | #endif |
|
|
2172 | WL head; |
|
|
2173 | } ANSIG; |
|
|
2174 | |
|
|
2175 | static ANSIG signals [EV_NSIG - 1]; |
|
|
2176 | |
|
|
2177 | /*****************************************************************************/ |
|
|
2178 | |
|
|
2179 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2180 | |
|
|
2181 | static void noinline ecb_cold |
|
|
2182 | evpipe_init (EV_P) |
|
|
2183 | { |
|
|
2184 | if (!ev_is_active (&pipe_w)) |
|
|
2185 | { |
|
|
2186 | int fds [2]; |
|
|
2187 | |
|
|
2188 | # if EV_USE_EVENTFD |
|
|
2189 | fds [0] = -1; |
|
|
2190 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2191 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2192 | fds [1] = eventfd (0, 0); |
|
|
2193 | |
|
|
2194 | if (fds [1] < 0) |
|
|
2195 | # endif |
|
|
2196 | { |
|
|
2197 | while (pipe (fds)) |
|
|
2198 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
2199 | |
|
|
2200 | fd_intern (fds [0]); |
|
|
2201 | } |
|
|
2202 | |
|
|
2203 | evpipe [0] = fds [0]; |
|
|
2204 | |
|
|
2205 | if (evpipe [1] < 0) |
|
|
2206 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2207 | else |
|
|
2208 | { |
|
|
2209 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2210 | /* so that evpipe_write can always rely on its value. */ |
|
|
2211 | /* this branch does not do anything sensible on windows, */ |
|
|
2212 | /* so must not be executed on windows */ |
|
|
2213 | |
|
|
2214 | dup2 (fds [1], evpipe [1]); |
|
|
2215 | close (fds [1]); |
|
|
2216 | } |
|
|
2217 | |
|
|
2218 | fd_intern (evpipe [1]); |
|
|
2219 | |
|
|
2220 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2221 | ev_io_start (EV_A_ &pipe_w); |
|
|
2222 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2223 | } |
|
|
2224 | } |
|
|
2225 | |
|
|
2226 | inline_speed void |
|
|
2227 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
2228 | { |
|
|
2229 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2230 | |
|
|
2231 | if (expect_true (*flag)) |
|
|
2232 | return; |
|
|
2233 | |
|
|
2234 | *flag = 1; |
|
|
2235 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2236 | |
|
|
2237 | pipe_write_skipped = 1; |
|
|
2238 | |
|
|
2239 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2240 | |
|
|
2241 | if (pipe_write_wanted) |
|
|
2242 | { |
|
|
2243 | int old_errno; |
|
|
2244 | |
|
|
2245 | pipe_write_skipped = 0; |
|
|
2246 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2247 | |
|
|
2248 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2249 | |
|
|
2250 | #if EV_USE_EVENTFD |
|
|
2251 | if (evpipe [0] < 0) |
|
|
2252 | { |
|
|
2253 | uint64_t counter = 1; |
|
|
2254 | write (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2255 | } |
|
|
2256 | else |
|
|
2257 | #endif |
|
|
2258 | { |
781 | #ifndef _WIN32 |
2259 | #ifdef _WIN32 |
|
|
2260 | WSABUF buf; |
|
|
2261 | DWORD sent; |
|
|
2262 | buf.buf = &buf; |
|
|
2263 | buf.len = 1; |
|
|
2264 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2265 | #else |
|
|
2266 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2267 | #endif |
|
|
2268 | } |
|
|
2269 | |
|
|
2270 | errno = old_errno; |
|
|
2271 | } |
|
|
2272 | } |
|
|
2273 | |
|
|
2274 | /* called whenever the libev signal pipe */ |
|
|
2275 | /* got some events (signal, async) */ |
|
|
2276 | static void |
|
|
2277 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
2278 | { |
|
|
2279 | int i; |
|
|
2280 | |
|
|
2281 | if (revents & EV_READ) |
|
|
2282 | { |
|
|
2283 | #if EV_USE_EVENTFD |
|
|
2284 | if (evpipe [0] < 0) |
|
|
2285 | { |
|
|
2286 | uint64_t counter; |
|
|
2287 | read (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2288 | } |
|
|
2289 | else |
|
|
2290 | #endif |
|
|
2291 | { |
|
|
2292 | char dummy[4]; |
|
|
2293 | #ifdef _WIN32 |
|
|
2294 | WSABUF buf; |
|
|
2295 | DWORD recvd; |
|
|
2296 | DWORD flags = 0; |
|
|
2297 | buf.buf = dummy; |
|
|
2298 | buf.len = sizeof (dummy); |
|
|
2299 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2300 | #else |
|
|
2301 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2302 | #endif |
|
|
2303 | } |
|
|
2304 | } |
|
|
2305 | |
|
|
2306 | pipe_write_skipped = 0; |
|
|
2307 | |
|
|
2308 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2309 | |
|
|
2310 | #if EV_SIGNAL_ENABLE |
|
|
2311 | if (sig_pending) |
|
|
2312 | { |
|
|
2313 | sig_pending = 0; |
|
|
2314 | |
|
|
2315 | ECB_MEMORY_FENCE; |
|
|
2316 | |
|
|
2317 | for (i = EV_NSIG - 1; i--; ) |
|
|
2318 | if (expect_false (signals [i].pending)) |
|
|
2319 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
2320 | } |
|
|
2321 | #endif |
|
|
2322 | |
|
|
2323 | #if EV_ASYNC_ENABLE |
|
|
2324 | if (async_pending) |
|
|
2325 | { |
|
|
2326 | async_pending = 0; |
|
|
2327 | |
|
|
2328 | ECB_MEMORY_FENCE; |
|
|
2329 | |
|
|
2330 | for (i = asynccnt; i--; ) |
|
|
2331 | if (asyncs [i]->sent) |
|
|
2332 | { |
|
|
2333 | asyncs [i]->sent = 0; |
|
|
2334 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2335 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
2336 | } |
|
|
2337 | } |
|
|
2338 | #endif |
|
|
2339 | } |
|
|
2340 | |
|
|
2341 | /*****************************************************************************/ |
|
|
2342 | |
|
|
2343 | void |
|
|
2344 | ev_feed_signal (int signum) EV_THROW |
|
|
2345 | { |
|
|
2346 | #if EV_MULTIPLICITY |
|
|
2347 | EV_P; |
|
|
2348 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2349 | EV_A = signals [signum - 1].loop; |
|
|
2350 | |
|
|
2351 | if (!EV_A) |
|
|
2352 | return; |
|
|
2353 | #endif |
|
|
2354 | |
|
|
2355 | signals [signum - 1].pending = 1; |
|
|
2356 | evpipe_write (EV_A_ &sig_pending); |
|
|
2357 | } |
|
|
2358 | |
|
|
2359 | static void |
|
|
2360 | ev_sighandler (int signum) |
|
|
2361 | { |
|
|
2362 | #ifdef _WIN32 |
|
|
2363 | signal (signum, ev_sighandler); |
|
|
2364 | #endif |
|
|
2365 | |
|
|
2366 | ev_feed_signal (signum); |
|
|
2367 | } |
|
|
2368 | |
|
|
2369 | void noinline |
|
|
2370 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
|
|
2371 | { |
|
|
2372 | WL w; |
|
|
2373 | |
|
|
2374 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2375 | return; |
|
|
2376 | |
|
|
2377 | --signum; |
|
|
2378 | |
|
|
2379 | #if EV_MULTIPLICITY |
|
|
2380 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
2381 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
2382 | |
|
|
2383 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
2384 | return; |
|
|
2385 | #endif |
|
|
2386 | |
|
|
2387 | signals [signum].pending = 0; |
|
|
2388 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2389 | |
|
|
2390 | for (w = signals [signum].head; w; w = w->next) |
|
|
2391 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
2392 | } |
|
|
2393 | |
|
|
2394 | #if EV_USE_SIGNALFD |
|
|
2395 | static void |
|
|
2396 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
2397 | { |
|
|
2398 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
2399 | |
|
|
2400 | for (;;) |
|
|
2401 | { |
|
|
2402 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
2403 | |
|
|
2404 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
2405 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
2406 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
2407 | |
|
|
2408 | if (res < (ssize_t)sizeof (si)) |
|
|
2409 | break; |
|
|
2410 | } |
|
|
2411 | } |
|
|
2412 | #endif |
|
|
2413 | |
|
|
2414 | #endif |
|
|
2415 | |
|
|
2416 | /*****************************************************************************/ |
|
|
2417 | |
|
|
2418 | #if EV_CHILD_ENABLE |
|
|
2419 | static WL childs [EV_PID_HASHSIZE]; |
782 | |
2420 | |
783 | static ev_signal childev; |
2421 | static ev_signal childev; |
784 | |
2422 | |
785 | void inline_speed |
2423 | #ifndef WIFCONTINUED |
|
|
2424 | # define WIFCONTINUED(status) 0 |
|
|
2425 | #endif |
|
|
2426 | |
|
|
2427 | /* handle a single child status event */ |
|
|
2428 | inline_speed void |
786 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
2429 | child_reap (EV_P_ int chain, int pid, int status) |
787 | { |
2430 | { |
788 | ev_child *w; |
2431 | ev_child *w; |
|
|
2432 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
789 | |
2433 | |
790 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
2434 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2435 | { |
791 | if (w->pid == pid || !w->pid) |
2436 | if ((w->pid == pid || !w->pid) |
|
|
2437 | && (!traced || (w->flags & 1))) |
792 | { |
2438 | { |
793 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
2439 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
794 | w->rpid = pid; |
2440 | w->rpid = pid; |
795 | w->rstatus = status; |
2441 | w->rstatus = status; |
796 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
2442 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
797 | } |
2443 | } |
|
|
2444 | } |
798 | } |
2445 | } |
799 | |
2446 | |
800 | #ifndef WCONTINUED |
2447 | #ifndef WCONTINUED |
801 | # define WCONTINUED 0 |
2448 | # define WCONTINUED 0 |
802 | #endif |
2449 | #endif |
803 | |
2450 | |
|
|
2451 | /* called on sigchld etc., calls waitpid */ |
804 | static void |
2452 | static void |
805 | childcb (EV_P_ ev_signal *sw, int revents) |
2453 | childcb (EV_P_ ev_signal *sw, int revents) |
806 | { |
2454 | { |
807 | int pid, status; |
2455 | int pid, status; |
808 | |
2456 | |
… | |
… | |
811 | if (!WCONTINUED |
2459 | if (!WCONTINUED |
812 | || errno != EINVAL |
2460 | || errno != EINVAL |
813 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
2461 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
814 | return; |
2462 | return; |
815 | |
2463 | |
816 | /* make sure we are called again until all childs have been reaped */ |
2464 | /* make sure we are called again until all children have been reaped */ |
817 | /* we need to do it this way so that the callback gets called before we continue */ |
2465 | /* we need to do it this way so that the callback gets called before we continue */ |
818 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
2466 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
819 | |
2467 | |
820 | child_reap (EV_A_ sw, pid, pid, status); |
2468 | child_reap (EV_A_ pid, pid, status); |
821 | if (EV_PID_HASHSIZE > 1) |
2469 | if ((EV_PID_HASHSIZE) > 1) |
822 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
2470 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
823 | } |
2471 | } |
824 | |
2472 | |
825 | #endif |
2473 | #endif |
826 | |
2474 | |
827 | /*****************************************************************************/ |
2475 | /*****************************************************************************/ |
828 | |
2476 | |
|
|
2477 | #if EV_USE_IOCP |
|
|
2478 | # include "ev_iocp.c" |
|
|
2479 | #endif |
829 | #if EV_USE_PORT |
2480 | #if EV_USE_PORT |
830 | # include "ev_port.c" |
2481 | # include "ev_port.c" |
831 | #endif |
2482 | #endif |
832 | #if EV_USE_KQUEUE |
2483 | #if EV_USE_KQUEUE |
833 | # include "ev_kqueue.c" |
2484 | # include "ev_kqueue.c" |
… | |
… | |
840 | #endif |
2491 | #endif |
841 | #if EV_USE_SELECT |
2492 | #if EV_USE_SELECT |
842 | # include "ev_select.c" |
2493 | # include "ev_select.c" |
843 | #endif |
2494 | #endif |
844 | |
2495 | |
845 | int |
2496 | int ecb_cold |
846 | ev_version_major (void) |
2497 | ev_version_major (void) EV_THROW |
847 | { |
2498 | { |
848 | return EV_VERSION_MAJOR; |
2499 | return EV_VERSION_MAJOR; |
849 | } |
2500 | } |
850 | |
2501 | |
851 | int |
2502 | int ecb_cold |
852 | ev_version_minor (void) |
2503 | ev_version_minor (void) EV_THROW |
853 | { |
2504 | { |
854 | return EV_VERSION_MINOR; |
2505 | return EV_VERSION_MINOR; |
855 | } |
2506 | } |
856 | |
2507 | |
857 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2508 | /* return true if we are running with elevated privileges and should ignore env variables */ |
858 | int inline_size |
2509 | int inline_size ecb_cold |
859 | enable_secure (void) |
2510 | enable_secure (void) |
860 | { |
2511 | { |
861 | #ifdef _WIN32 |
2512 | #ifdef _WIN32 |
862 | return 0; |
2513 | return 0; |
863 | #else |
2514 | #else |
864 | return getuid () != geteuid () |
2515 | return getuid () != geteuid () |
865 | || getgid () != getegid (); |
2516 | || getgid () != getegid (); |
866 | #endif |
2517 | #endif |
867 | } |
2518 | } |
868 | |
2519 | |
869 | unsigned int |
2520 | unsigned int ecb_cold |
870 | ev_supported_backends (void) |
2521 | ev_supported_backends (void) EV_THROW |
871 | { |
2522 | { |
872 | unsigned int flags = 0; |
2523 | unsigned int flags = 0; |
873 | |
2524 | |
874 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2525 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
875 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
2526 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
… | |
… | |
878 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2529 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
879 | |
2530 | |
880 | return flags; |
2531 | return flags; |
881 | } |
2532 | } |
882 | |
2533 | |
883 | unsigned int |
2534 | unsigned int ecb_cold |
884 | ev_recommended_backends (void) |
2535 | ev_recommended_backends (void) EV_THROW |
885 | { |
2536 | { |
886 | unsigned int flags = ev_supported_backends (); |
2537 | unsigned int flags = ev_supported_backends (); |
887 | |
2538 | |
888 | #ifndef __NetBSD__ |
2539 | #ifndef __NetBSD__ |
889 | /* kqueue is borked on everything but netbsd apparently */ |
2540 | /* kqueue is borked on everything but netbsd apparently */ |
890 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
2541 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
891 | flags &= ~EVBACKEND_KQUEUE; |
2542 | flags &= ~EVBACKEND_KQUEUE; |
892 | #endif |
2543 | #endif |
893 | #ifdef __APPLE__ |
2544 | #ifdef __APPLE__ |
894 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
2545 | /* only select works correctly on that "unix-certified" platform */ |
895 | flags &= ~EVBACKEND_POLL; |
2546 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
2547 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
2548 | #endif |
|
|
2549 | #ifdef __FreeBSD__ |
|
|
2550 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
896 | #endif |
2551 | #endif |
897 | |
2552 | |
898 | return flags; |
2553 | return flags; |
899 | } |
2554 | } |
900 | |
2555 | |
|
|
2556 | unsigned int ecb_cold |
|
|
2557 | ev_embeddable_backends (void) EV_THROW |
|
|
2558 | { |
|
|
2559 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
2560 | |
|
|
2561 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
2562 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
2563 | flags &= ~EVBACKEND_EPOLL; |
|
|
2564 | |
|
|
2565 | return flags; |
|
|
2566 | } |
|
|
2567 | |
901 | unsigned int |
2568 | unsigned int |
902 | ev_embeddable_backends (void) |
2569 | ev_backend (EV_P) EV_THROW |
903 | { |
2570 | { |
904 | return EVBACKEND_EPOLL |
2571 | return backend; |
905 | | EVBACKEND_KQUEUE |
|
|
906 | | EVBACKEND_PORT; |
|
|
907 | } |
2572 | } |
908 | |
2573 | |
|
|
2574 | #if EV_FEATURE_API |
909 | unsigned int |
2575 | unsigned int |
910 | ev_backend (EV_P) |
2576 | ev_iteration (EV_P) EV_THROW |
911 | { |
2577 | { |
912 | return backend; |
2578 | return loop_count; |
913 | } |
2579 | } |
914 | |
2580 | |
915 | unsigned int |
2581 | unsigned int |
916 | ev_loop_count (EV_P) |
2582 | ev_depth (EV_P) EV_THROW |
917 | { |
2583 | { |
918 | return loop_count; |
2584 | return loop_depth; |
919 | } |
2585 | } |
920 | |
2586 | |
|
|
2587 | void |
|
|
2588 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2589 | { |
|
|
2590 | io_blocktime = interval; |
|
|
2591 | } |
|
|
2592 | |
|
|
2593 | void |
|
|
2594 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2595 | { |
|
|
2596 | timeout_blocktime = interval; |
|
|
2597 | } |
|
|
2598 | |
|
|
2599 | void |
|
|
2600 | ev_set_userdata (EV_P_ void *data) EV_THROW |
|
|
2601 | { |
|
|
2602 | userdata = data; |
|
|
2603 | } |
|
|
2604 | |
|
|
2605 | void * |
|
|
2606 | ev_userdata (EV_P) EV_THROW |
|
|
2607 | { |
|
|
2608 | return userdata; |
|
|
2609 | } |
|
|
2610 | |
|
|
2611 | void |
|
|
2612 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
|
|
2613 | { |
|
|
2614 | invoke_cb = invoke_pending_cb; |
|
|
2615 | } |
|
|
2616 | |
|
|
2617 | void |
|
|
2618 | ev_set_loop_release_cb (EV_P_ ev_loop_callback release EV_THROW, ev_loop_callback acquire EV_THROW) EV_THROW |
|
|
2619 | { |
|
|
2620 | release_cb = release; |
|
|
2621 | acquire_cb = acquire; |
|
|
2622 | } |
|
|
2623 | #endif |
|
|
2624 | |
|
|
2625 | /* initialise a loop structure, must be zero-initialised */ |
921 | static void noinline |
2626 | static void noinline ecb_cold |
922 | loop_init (EV_P_ unsigned int flags) |
2627 | loop_init (EV_P_ unsigned int flags) EV_THROW |
923 | { |
2628 | { |
924 | if (!backend) |
2629 | if (!backend) |
925 | { |
2630 | { |
|
|
2631 | origflags = flags; |
|
|
2632 | |
|
|
2633 | #if EV_USE_REALTIME |
|
|
2634 | if (!have_realtime) |
|
|
2635 | { |
|
|
2636 | struct timespec ts; |
|
|
2637 | |
|
|
2638 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
2639 | have_realtime = 1; |
|
|
2640 | } |
|
|
2641 | #endif |
|
|
2642 | |
926 | #if EV_USE_MONOTONIC |
2643 | #if EV_USE_MONOTONIC |
|
|
2644 | if (!have_monotonic) |
927 | { |
2645 | { |
928 | struct timespec ts; |
2646 | struct timespec ts; |
|
|
2647 | |
929 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
2648 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
930 | have_monotonic = 1; |
2649 | have_monotonic = 1; |
931 | } |
2650 | } |
932 | #endif |
2651 | #endif |
933 | |
|
|
934 | ev_rt_now = ev_time (); |
|
|
935 | mn_now = get_clock (); |
|
|
936 | now_floor = mn_now; |
|
|
937 | rtmn_diff = ev_rt_now - mn_now; |
|
|
938 | |
2652 | |
939 | /* pid check not overridable via env */ |
2653 | /* pid check not overridable via env */ |
940 | #ifndef _WIN32 |
2654 | #ifndef _WIN32 |
941 | if (flags & EVFLAG_FORKCHECK) |
2655 | if (flags & EVFLAG_FORKCHECK) |
942 | curpid = getpid (); |
2656 | curpid = getpid (); |
… | |
… | |
945 | if (!(flags & EVFLAG_NOENV) |
2659 | if (!(flags & EVFLAG_NOENV) |
946 | && !enable_secure () |
2660 | && !enable_secure () |
947 | && getenv ("LIBEV_FLAGS")) |
2661 | && getenv ("LIBEV_FLAGS")) |
948 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2662 | flags = atoi (getenv ("LIBEV_FLAGS")); |
949 | |
2663 | |
950 | if (!(flags & 0x0000ffffUL)) |
2664 | ev_rt_now = ev_time (); |
|
|
2665 | mn_now = get_clock (); |
|
|
2666 | now_floor = mn_now; |
|
|
2667 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2668 | #if EV_FEATURE_API |
|
|
2669 | invoke_cb = ev_invoke_pending; |
|
|
2670 | #endif |
|
|
2671 | |
|
|
2672 | io_blocktime = 0.; |
|
|
2673 | timeout_blocktime = 0.; |
|
|
2674 | backend = 0; |
|
|
2675 | backend_fd = -1; |
|
|
2676 | sig_pending = 0; |
|
|
2677 | #if EV_ASYNC_ENABLE |
|
|
2678 | async_pending = 0; |
|
|
2679 | #endif |
|
|
2680 | pipe_write_skipped = 0; |
|
|
2681 | pipe_write_wanted = 0; |
|
|
2682 | evpipe [0] = -1; |
|
|
2683 | evpipe [1] = -1; |
|
|
2684 | #if EV_USE_INOTIFY |
|
|
2685 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2686 | #endif |
|
|
2687 | #if EV_USE_SIGNALFD |
|
|
2688 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2689 | #endif |
|
|
2690 | |
|
|
2691 | if (!(flags & EVBACKEND_MASK)) |
951 | flags |= ev_recommended_backends (); |
2692 | flags |= ev_recommended_backends (); |
952 | |
2693 | |
953 | backend = 0; |
|
|
954 | backend_fd = -1; |
|
|
955 | #if EV_USE_INOTIFY |
2694 | #if EV_USE_IOCP |
956 | fs_fd = -2; |
2695 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
957 | #endif |
2696 | #endif |
958 | |
|
|
959 | #if EV_USE_PORT |
2697 | #if EV_USE_PORT |
960 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
2698 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
961 | #endif |
2699 | #endif |
962 | #if EV_USE_KQUEUE |
2700 | #if EV_USE_KQUEUE |
963 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
2701 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
970 | #endif |
2708 | #endif |
971 | #if EV_USE_SELECT |
2709 | #if EV_USE_SELECT |
972 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
2710 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
973 | #endif |
2711 | #endif |
974 | |
2712 | |
|
|
2713 | ev_prepare_init (&pending_w, pendingcb); |
|
|
2714 | |
|
|
2715 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
975 | ev_init (&sigev, sigcb); |
2716 | ev_init (&pipe_w, pipecb); |
976 | ev_set_priority (&sigev, EV_MAXPRI); |
2717 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2718 | #endif |
977 | } |
2719 | } |
978 | } |
2720 | } |
979 | |
2721 | |
980 | static void noinline |
2722 | /* free up a loop structure */ |
|
|
2723 | void ecb_cold |
981 | loop_destroy (EV_P) |
2724 | ev_loop_destroy (EV_P) |
982 | { |
2725 | { |
983 | int i; |
2726 | int i; |
|
|
2727 | |
|
|
2728 | #if EV_MULTIPLICITY |
|
|
2729 | /* mimic free (0) */ |
|
|
2730 | if (!EV_A) |
|
|
2731 | return; |
|
|
2732 | #endif |
|
|
2733 | |
|
|
2734 | #if EV_CLEANUP_ENABLE |
|
|
2735 | /* queue cleanup watchers (and execute them) */ |
|
|
2736 | if (expect_false (cleanupcnt)) |
|
|
2737 | { |
|
|
2738 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
2739 | EV_INVOKE_PENDING; |
|
|
2740 | } |
|
|
2741 | #endif |
|
|
2742 | |
|
|
2743 | #if EV_CHILD_ENABLE |
|
|
2744 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
2745 | { |
|
|
2746 | ev_ref (EV_A); /* child watcher */ |
|
|
2747 | ev_signal_stop (EV_A_ &childev); |
|
|
2748 | } |
|
|
2749 | #endif |
|
|
2750 | |
|
|
2751 | if (ev_is_active (&pipe_w)) |
|
|
2752 | { |
|
|
2753 | /*ev_ref (EV_A);*/ |
|
|
2754 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
2755 | |
|
|
2756 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2757 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2758 | } |
|
|
2759 | |
|
|
2760 | #if EV_USE_SIGNALFD |
|
|
2761 | if (ev_is_active (&sigfd_w)) |
|
|
2762 | close (sigfd); |
|
|
2763 | #endif |
984 | |
2764 | |
985 | #if EV_USE_INOTIFY |
2765 | #if EV_USE_INOTIFY |
986 | if (fs_fd >= 0) |
2766 | if (fs_fd >= 0) |
987 | close (fs_fd); |
2767 | close (fs_fd); |
988 | #endif |
2768 | #endif |
989 | |
2769 | |
990 | if (backend_fd >= 0) |
2770 | if (backend_fd >= 0) |
991 | close (backend_fd); |
2771 | close (backend_fd); |
992 | |
2772 | |
|
|
2773 | #if EV_USE_IOCP |
|
|
2774 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
2775 | #endif |
993 | #if EV_USE_PORT |
2776 | #if EV_USE_PORT |
994 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
2777 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
995 | #endif |
2778 | #endif |
996 | #if EV_USE_KQUEUE |
2779 | #if EV_USE_KQUEUE |
997 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
2780 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
… | |
… | |
1012 | #if EV_IDLE_ENABLE |
2795 | #if EV_IDLE_ENABLE |
1013 | array_free (idle, [i]); |
2796 | array_free (idle, [i]); |
1014 | #endif |
2797 | #endif |
1015 | } |
2798 | } |
1016 | |
2799 | |
|
|
2800 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
2801 | |
1017 | /* have to use the microsoft-never-gets-it-right macro */ |
2802 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
2803 | array_free (rfeed, EMPTY); |
1018 | array_free (fdchange, EMPTY); |
2804 | array_free (fdchange, EMPTY); |
1019 | array_free (timer, EMPTY); |
2805 | array_free (timer, EMPTY); |
1020 | #if EV_PERIODIC_ENABLE |
2806 | #if EV_PERIODIC_ENABLE |
1021 | array_free (periodic, EMPTY); |
2807 | array_free (periodic, EMPTY); |
1022 | #endif |
2808 | #endif |
|
|
2809 | #if EV_FORK_ENABLE |
|
|
2810 | array_free (fork, EMPTY); |
|
|
2811 | #endif |
|
|
2812 | #if EV_CLEANUP_ENABLE |
|
|
2813 | array_free (cleanup, EMPTY); |
|
|
2814 | #endif |
1023 | array_free (prepare, EMPTY); |
2815 | array_free (prepare, EMPTY); |
1024 | array_free (check, EMPTY); |
2816 | array_free (check, EMPTY); |
|
|
2817 | #if EV_ASYNC_ENABLE |
|
|
2818 | array_free (async, EMPTY); |
|
|
2819 | #endif |
1025 | |
2820 | |
1026 | backend = 0; |
2821 | backend = 0; |
1027 | } |
|
|
1028 | |
2822 | |
|
|
2823 | #if EV_MULTIPLICITY |
|
|
2824 | if (ev_is_default_loop (EV_A)) |
|
|
2825 | #endif |
|
|
2826 | ev_default_loop_ptr = 0; |
|
|
2827 | #if EV_MULTIPLICITY |
|
|
2828 | else |
|
|
2829 | ev_free (EV_A); |
|
|
2830 | #endif |
|
|
2831 | } |
|
|
2832 | |
|
|
2833 | #if EV_USE_INOTIFY |
1029 | void inline_size infy_fork (EV_P); |
2834 | inline_size void infy_fork (EV_P); |
|
|
2835 | #endif |
1030 | |
2836 | |
1031 | void inline_size |
2837 | inline_size void |
1032 | loop_fork (EV_P) |
2838 | loop_fork (EV_P) |
1033 | { |
2839 | { |
1034 | #if EV_USE_PORT |
2840 | #if EV_USE_PORT |
1035 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
2841 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1036 | #endif |
2842 | #endif |
… | |
… | |
1042 | #endif |
2848 | #endif |
1043 | #if EV_USE_INOTIFY |
2849 | #if EV_USE_INOTIFY |
1044 | infy_fork (EV_A); |
2850 | infy_fork (EV_A); |
1045 | #endif |
2851 | #endif |
1046 | |
2852 | |
|
|
2853 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1047 | if (ev_is_active (&sigev)) |
2854 | if (ev_is_active (&pipe_w)) |
1048 | { |
2855 | { |
1049 | /* default loop */ |
2856 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1050 | |
2857 | |
1051 | ev_ref (EV_A); |
2858 | ev_ref (EV_A); |
1052 | ev_io_stop (EV_A_ &sigev); |
2859 | ev_io_stop (EV_A_ &pipe_w); |
1053 | close (sigpipe [0]); |
|
|
1054 | close (sigpipe [1]); |
|
|
1055 | |
2860 | |
1056 | while (pipe (sigpipe)) |
2861 | if (evpipe [0] >= 0) |
1057 | syserr ("(libev) error creating pipe"); |
2862 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1058 | |
2863 | |
1059 | siginit (EV_A); |
2864 | evpipe_init (EV_A); |
|
|
2865 | /* iterate over everything, in case we missed something before */ |
|
|
2866 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
1060 | } |
2867 | } |
|
|
2868 | #endif |
1061 | |
2869 | |
1062 | postfork = 0; |
2870 | postfork = 0; |
1063 | } |
2871 | } |
1064 | |
2872 | |
1065 | #if EV_MULTIPLICITY |
2873 | #if EV_MULTIPLICITY |
|
|
2874 | |
1066 | struct ev_loop * |
2875 | struct ev_loop * ecb_cold |
1067 | ev_loop_new (unsigned int flags) |
2876 | ev_loop_new (unsigned int flags) EV_THROW |
1068 | { |
2877 | { |
1069 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2878 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1070 | |
2879 | |
1071 | memset (loop, 0, sizeof (struct ev_loop)); |
2880 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1072 | |
|
|
1073 | loop_init (EV_A_ flags); |
2881 | loop_init (EV_A_ flags); |
1074 | |
2882 | |
1075 | if (ev_backend (EV_A)) |
2883 | if (ev_backend (EV_A)) |
1076 | return loop; |
2884 | return EV_A; |
1077 | |
2885 | |
|
|
2886 | ev_free (EV_A); |
1078 | return 0; |
2887 | return 0; |
1079 | } |
2888 | } |
1080 | |
2889 | |
1081 | void |
2890 | #endif /* multiplicity */ |
1082 | ev_loop_destroy (EV_P) |
|
|
1083 | { |
|
|
1084 | loop_destroy (EV_A); |
|
|
1085 | ev_free (loop); |
|
|
1086 | } |
|
|
1087 | |
2891 | |
1088 | void |
2892 | #if EV_VERIFY |
1089 | ev_loop_fork (EV_P) |
2893 | static void noinline ecb_cold |
|
|
2894 | verify_watcher (EV_P_ W w) |
1090 | { |
2895 | { |
1091 | postfork = 1; |
2896 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1092 | } |
|
|
1093 | |
2897 | |
|
|
2898 | if (w->pending) |
|
|
2899 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
2900 | } |
|
|
2901 | |
|
|
2902 | static void noinline ecb_cold |
|
|
2903 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
2904 | { |
|
|
2905 | int i; |
|
|
2906 | |
|
|
2907 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
2908 | { |
|
|
2909 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
2910 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
2911 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
2912 | |
|
|
2913 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
2914 | } |
|
|
2915 | } |
|
|
2916 | |
|
|
2917 | static void noinline ecb_cold |
|
|
2918 | array_verify (EV_P_ W *ws, int cnt) |
|
|
2919 | { |
|
|
2920 | while (cnt--) |
|
|
2921 | { |
|
|
2922 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
2923 | verify_watcher (EV_A_ ws [cnt]); |
|
|
2924 | } |
|
|
2925 | } |
|
|
2926 | #endif |
|
|
2927 | |
|
|
2928 | #if EV_FEATURE_API |
|
|
2929 | void ecb_cold |
|
|
2930 | ev_verify (EV_P) EV_THROW |
|
|
2931 | { |
|
|
2932 | #if EV_VERIFY |
|
|
2933 | int i; |
|
|
2934 | WL w, w2; |
|
|
2935 | |
|
|
2936 | assert (activecnt >= -1); |
|
|
2937 | |
|
|
2938 | assert (fdchangemax >= fdchangecnt); |
|
|
2939 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2940 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
2941 | |
|
|
2942 | assert (anfdmax >= 0); |
|
|
2943 | for (i = 0; i < anfdmax; ++i) |
|
|
2944 | { |
|
|
2945 | int j = 0; |
|
|
2946 | |
|
|
2947 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
2948 | { |
|
|
2949 | verify_watcher (EV_A_ (W)w); |
|
|
2950 | |
|
|
2951 | if (j++ & 1) |
|
|
2952 | { |
|
|
2953 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
2954 | w2 = w2->next; |
|
|
2955 | } |
|
|
2956 | |
|
|
2957 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
2958 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
2959 | } |
|
|
2960 | } |
|
|
2961 | |
|
|
2962 | assert (timermax >= timercnt); |
|
|
2963 | verify_heap (EV_A_ timers, timercnt); |
|
|
2964 | |
|
|
2965 | #if EV_PERIODIC_ENABLE |
|
|
2966 | assert (periodicmax >= periodiccnt); |
|
|
2967 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
2968 | #endif |
|
|
2969 | |
|
|
2970 | for (i = NUMPRI; i--; ) |
|
|
2971 | { |
|
|
2972 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
2973 | #if EV_IDLE_ENABLE |
|
|
2974 | assert (idleall >= 0); |
|
|
2975 | assert (idlemax [i] >= idlecnt [i]); |
|
|
2976 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
2977 | #endif |
|
|
2978 | } |
|
|
2979 | |
|
|
2980 | #if EV_FORK_ENABLE |
|
|
2981 | assert (forkmax >= forkcnt); |
|
|
2982 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
2983 | #endif |
|
|
2984 | |
|
|
2985 | #if EV_CLEANUP_ENABLE |
|
|
2986 | assert (cleanupmax >= cleanupcnt); |
|
|
2987 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2988 | #endif |
|
|
2989 | |
|
|
2990 | #if EV_ASYNC_ENABLE |
|
|
2991 | assert (asyncmax >= asynccnt); |
|
|
2992 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
2993 | #endif |
|
|
2994 | |
|
|
2995 | #if EV_PREPARE_ENABLE |
|
|
2996 | assert (preparemax >= preparecnt); |
|
|
2997 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
2998 | #endif |
|
|
2999 | |
|
|
3000 | #if EV_CHECK_ENABLE |
|
|
3001 | assert (checkmax >= checkcnt); |
|
|
3002 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
3003 | #endif |
|
|
3004 | |
|
|
3005 | # if 0 |
|
|
3006 | #if EV_CHILD_ENABLE |
|
|
3007 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
3008 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
3009 | #endif |
|
|
3010 | # endif |
|
|
3011 | #endif |
|
|
3012 | } |
1094 | #endif |
3013 | #endif |
1095 | |
3014 | |
1096 | #if EV_MULTIPLICITY |
3015 | #if EV_MULTIPLICITY |
1097 | struct ev_loop * |
3016 | struct ev_loop * ecb_cold |
1098 | ev_default_loop_init (unsigned int flags) |
|
|
1099 | #else |
3017 | #else |
1100 | int |
3018 | int |
|
|
3019 | #endif |
1101 | ev_default_loop (unsigned int flags) |
3020 | ev_default_loop (unsigned int flags) EV_THROW |
1102 | #endif |
|
|
1103 | { |
3021 | { |
1104 | if (sigpipe [0] == sigpipe [1]) |
|
|
1105 | if (pipe (sigpipe)) |
|
|
1106 | return 0; |
|
|
1107 | |
|
|
1108 | if (!ev_default_loop_ptr) |
3022 | if (!ev_default_loop_ptr) |
1109 | { |
3023 | { |
1110 | #if EV_MULTIPLICITY |
3024 | #if EV_MULTIPLICITY |
1111 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
3025 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
1112 | #else |
3026 | #else |
1113 | ev_default_loop_ptr = 1; |
3027 | ev_default_loop_ptr = 1; |
1114 | #endif |
3028 | #endif |
1115 | |
3029 | |
1116 | loop_init (EV_A_ flags); |
3030 | loop_init (EV_A_ flags); |
1117 | |
3031 | |
1118 | if (ev_backend (EV_A)) |
3032 | if (ev_backend (EV_A)) |
1119 | { |
3033 | { |
1120 | siginit (EV_A); |
3034 | #if EV_CHILD_ENABLE |
1121 | |
|
|
1122 | #ifndef _WIN32 |
|
|
1123 | ev_signal_init (&childev, childcb, SIGCHLD); |
3035 | ev_signal_init (&childev, childcb, SIGCHLD); |
1124 | ev_set_priority (&childev, EV_MAXPRI); |
3036 | ev_set_priority (&childev, EV_MAXPRI); |
1125 | ev_signal_start (EV_A_ &childev); |
3037 | ev_signal_start (EV_A_ &childev); |
1126 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
3038 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1127 | #endif |
3039 | #endif |
… | |
… | |
1132 | |
3044 | |
1133 | return ev_default_loop_ptr; |
3045 | return ev_default_loop_ptr; |
1134 | } |
3046 | } |
1135 | |
3047 | |
1136 | void |
3048 | void |
1137 | ev_default_destroy (void) |
3049 | ev_loop_fork (EV_P) EV_THROW |
1138 | { |
3050 | { |
1139 | #if EV_MULTIPLICITY |
|
|
1140 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1141 | #endif |
|
|
1142 | |
|
|
1143 | #ifndef _WIN32 |
|
|
1144 | ev_ref (EV_A); /* child watcher */ |
|
|
1145 | ev_signal_stop (EV_A_ &childev); |
|
|
1146 | #endif |
|
|
1147 | |
|
|
1148 | ev_ref (EV_A); /* signal watcher */ |
|
|
1149 | ev_io_stop (EV_A_ &sigev); |
|
|
1150 | |
|
|
1151 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1152 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1153 | |
|
|
1154 | loop_destroy (EV_A); |
|
|
1155 | } |
|
|
1156 | |
|
|
1157 | void |
|
|
1158 | ev_default_fork (void) |
|
|
1159 | { |
|
|
1160 | #if EV_MULTIPLICITY |
|
|
1161 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1162 | #endif |
|
|
1163 | |
|
|
1164 | if (backend) |
|
|
1165 | postfork = 1; |
3051 | postfork = 1; |
1166 | } |
3052 | } |
1167 | |
3053 | |
1168 | /*****************************************************************************/ |
3054 | /*****************************************************************************/ |
1169 | |
3055 | |
1170 | void |
3056 | void |
1171 | ev_invoke (EV_P_ void *w, int revents) |
3057 | ev_invoke (EV_P_ void *w, int revents) |
1172 | { |
3058 | { |
1173 | EV_CB_INVOKE ((W)w, revents); |
3059 | EV_CB_INVOKE ((W)w, revents); |
1174 | } |
3060 | } |
1175 | |
3061 | |
1176 | void inline_speed |
3062 | unsigned int |
1177 | call_pending (EV_P) |
3063 | ev_pending_count (EV_P) EV_THROW |
1178 | { |
3064 | { |
1179 | int pri; |
3065 | int pri; |
|
|
3066 | unsigned int count = 0; |
1180 | |
3067 | |
1181 | for (pri = NUMPRI; pri--; ) |
3068 | for (pri = NUMPRI; pri--; ) |
|
|
3069 | count += pendingcnt [pri]; |
|
|
3070 | |
|
|
3071 | return count; |
|
|
3072 | } |
|
|
3073 | |
|
|
3074 | void noinline |
|
|
3075 | ev_invoke_pending (EV_P) |
|
|
3076 | { |
|
|
3077 | pendingpri = NUMPRI; |
|
|
3078 | |
|
|
3079 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
3080 | { |
|
|
3081 | --pendingpri; |
|
|
3082 | |
1182 | while (pendingcnt [pri]) |
3083 | while (pendingcnt [pendingpri]) |
1183 | { |
|
|
1184 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1185 | |
|
|
1186 | if (expect_true (p->w)) |
|
|
1187 | { |
|
|
1188 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1189 | |
|
|
1190 | p->w->pending = 0; |
|
|
1191 | EV_CB_INVOKE (p->w, p->events); |
|
|
1192 | } |
|
|
1193 | } |
|
|
1194 | } |
|
|
1195 | |
|
|
1196 | void inline_size |
|
|
1197 | timers_reify (EV_P) |
|
|
1198 | { |
|
|
1199 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
|
|
1200 | { |
|
|
1201 | ev_timer *w = timers [0]; |
|
|
1202 | |
|
|
1203 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1204 | |
|
|
1205 | /* first reschedule or stop timer */ |
|
|
1206 | if (w->repeat) |
|
|
1207 | { |
3084 | { |
1208 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
3085 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
1209 | |
3086 | |
1210 | ((WT)w)->at += w->repeat; |
3087 | p->w->pending = 0; |
1211 | if (((WT)w)->at < mn_now) |
3088 | EV_CB_INVOKE (p->w, p->events); |
1212 | ((WT)w)->at = mn_now; |
3089 | EV_FREQUENT_CHECK; |
1213 | |
|
|
1214 | downheap ((WT *)timers, timercnt, 0); |
|
|
1215 | } |
3090 | } |
1216 | else |
|
|
1217 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1218 | |
|
|
1219 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1220 | } |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | #if EV_PERIODIC_ENABLE |
|
|
1224 | void inline_size |
|
|
1225 | periodics_reify (EV_P) |
|
|
1226 | { |
|
|
1227 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1228 | { |
3091 | } |
1229 | ev_periodic *w = periodics [0]; |
|
|
1230 | |
|
|
1231 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1232 | |
|
|
1233 | /* first reschedule or stop timer */ |
|
|
1234 | if (w->reschedule_cb) |
|
|
1235 | { |
|
|
1236 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1237 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1238 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1239 | } |
|
|
1240 | else if (w->interval) |
|
|
1241 | { |
|
|
1242 | ((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval; |
|
|
1243 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1244 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1245 | } |
|
|
1246 | else |
|
|
1247 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1248 | |
|
|
1249 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1250 | } |
|
|
1251 | } |
3092 | } |
1252 | |
|
|
1253 | static void noinline |
|
|
1254 | periodics_reschedule (EV_P) |
|
|
1255 | { |
|
|
1256 | int i; |
|
|
1257 | |
|
|
1258 | /* adjust periodics after time jump */ |
|
|
1259 | for (i = 0; i < periodiccnt; ++i) |
|
|
1260 | { |
|
|
1261 | ev_periodic *w = periodics [i]; |
|
|
1262 | |
|
|
1263 | if (w->reschedule_cb) |
|
|
1264 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1265 | else if (w->interval) |
|
|
1266 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1267 | } |
|
|
1268 | |
|
|
1269 | /* now rebuild the heap */ |
|
|
1270 | for (i = periodiccnt >> 1; i--; ) |
|
|
1271 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1272 | } |
|
|
1273 | #endif |
|
|
1274 | |
3093 | |
1275 | #if EV_IDLE_ENABLE |
3094 | #if EV_IDLE_ENABLE |
1276 | void inline_size |
3095 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
3096 | /* only when higher priorities are idle" logic */ |
|
|
3097 | inline_size void |
1277 | idle_reify (EV_P) |
3098 | idle_reify (EV_P) |
1278 | { |
3099 | { |
1279 | if (expect_false (idleall)) |
3100 | if (expect_false (idleall)) |
1280 | { |
3101 | { |
1281 | int pri; |
3102 | int pri; |
… | |
… | |
1293 | } |
3114 | } |
1294 | } |
3115 | } |
1295 | } |
3116 | } |
1296 | #endif |
3117 | #endif |
1297 | |
3118 | |
1298 | int inline_size |
3119 | /* make timers pending */ |
1299 | time_update_monotonic (EV_P) |
3120 | inline_size void |
|
|
3121 | timers_reify (EV_P) |
1300 | { |
3122 | { |
|
|
3123 | EV_FREQUENT_CHECK; |
|
|
3124 | |
|
|
3125 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
3126 | { |
|
|
3127 | do |
|
|
3128 | { |
|
|
3129 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
3130 | |
|
|
3131 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
3132 | |
|
|
3133 | /* first reschedule or stop timer */ |
|
|
3134 | if (w->repeat) |
|
|
3135 | { |
|
|
3136 | ev_at (w) += w->repeat; |
|
|
3137 | if (ev_at (w) < mn_now) |
|
|
3138 | ev_at (w) = mn_now; |
|
|
3139 | |
|
|
3140 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
3141 | |
|
|
3142 | ANHE_at_cache (timers [HEAP0]); |
|
|
3143 | downheap (timers, timercnt, HEAP0); |
|
|
3144 | } |
|
|
3145 | else |
|
|
3146 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3147 | |
|
|
3148 | EV_FREQUENT_CHECK; |
|
|
3149 | feed_reverse (EV_A_ (W)w); |
|
|
3150 | } |
|
|
3151 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
3152 | |
|
|
3153 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
3154 | } |
|
|
3155 | } |
|
|
3156 | |
|
|
3157 | #if EV_PERIODIC_ENABLE |
|
|
3158 | |
|
|
3159 | static void noinline |
|
|
3160 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
3161 | { |
|
|
3162 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3163 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3164 | |
|
|
3165 | /* the above almost always errs on the low side */ |
|
|
3166 | while (at <= ev_rt_now) |
|
|
3167 | { |
|
|
3168 | ev_tstamp nat = at + w->interval; |
|
|
3169 | |
|
|
3170 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3171 | if (expect_false (nat == at)) |
|
|
3172 | { |
|
|
3173 | at = ev_rt_now; |
|
|
3174 | break; |
|
|
3175 | } |
|
|
3176 | |
|
|
3177 | at = nat; |
|
|
3178 | } |
|
|
3179 | |
|
|
3180 | ev_at (w) = at; |
|
|
3181 | } |
|
|
3182 | |
|
|
3183 | /* make periodics pending */ |
|
|
3184 | inline_size void |
|
|
3185 | periodics_reify (EV_P) |
|
|
3186 | { |
|
|
3187 | EV_FREQUENT_CHECK; |
|
|
3188 | |
|
|
3189 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
3190 | { |
|
|
3191 | do |
|
|
3192 | { |
|
|
3193 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
3194 | |
|
|
3195 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
3196 | |
|
|
3197 | /* first reschedule or stop timer */ |
|
|
3198 | if (w->reschedule_cb) |
|
|
3199 | { |
|
|
3200 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3201 | |
|
|
3202 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
3203 | |
|
|
3204 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3205 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3206 | } |
|
|
3207 | else if (w->interval) |
|
|
3208 | { |
|
|
3209 | periodic_recalc (EV_A_ w); |
|
|
3210 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3211 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3212 | } |
|
|
3213 | else |
|
|
3214 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3215 | |
|
|
3216 | EV_FREQUENT_CHECK; |
|
|
3217 | feed_reverse (EV_A_ (W)w); |
|
|
3218 | } |
|
|
3219 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
3220 | |
|
|
3221 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
3222 | } |
|
|
3223 | } |
|
|
3224 | |
|
|
3225 | /* simply recalculate all periodics */ |
|
|
3226 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
3227 | static void noinline ecb_cold |
|
|
3228 | periodics_reschedule (EV_P) |
|
|
3229 | { |
|
|
3230 | int i; |
|
|
3231 | |
|
|
3232 | /* adjust periodics after time jump */ |
|
|
3233 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
3234 | { |
|
|
3235 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
3236 | |
|
|
3237 | if (w->reschedule_cb) |
|
|
3238 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3239 | else if (w->interval) |
|
|
3240 | periodic_recalc (EV_A_ w); |
|
|
3241 | |
|
|
3242 | ANHE_at_cache (periodics [i]); |
|
|
3243 | } |
|
|
3244 | |
|
|
3245 | reheap (periodics, periodiccnt); |
|
|
3246 | } |
|
|
3247 | #endif |
|
|
3248 | |
|
|
3249 | /* adjust all timers by a given offset */ |
|
|
3250 | static void noinline ecb_cold |
|
|
3251 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
3252 | { |
|
|
3253 | int i; |
|
|
3254 | |
|
|
3255 | for (i = 0; i < timercnt; ++i) |
|
|
3256 | { |
|
|
3257 | ANHE *he = timers + i + HEAP0; |
|
|
3258 | ANHE_w (*he)->at += adjust; |
|
|
3259 | ANHE_at_cache (*he); |
|
|
3260 | } |
|
|
3261 | } |
|
|
3262 | |
|
|
3263 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
3264 | /* also detect if there was a timejump, and act accordingly */ |
|
|
3265 | inline_speed void |
|
|
3266 | time_update (EV_P_ ev_tstamp max_block) |
|
|
3267 | { |
|
|
3268 | #if EV_USE_MONOTONIC |
|
|
3269 | if (expect_true (have_monotonic)) |
|
|
3270 | { |
|
|
3271 | int i; |
|
|
3272 | ev_tstamp odiff = rtmn_diff; |
|
|
3273 | |
1301 | mn_now = get_clock (); |
3274 | mn_now = get_clock (); |
1302 | |
3275 | |
|
|
3276 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
3277 | /* interpolate in the meantime */ |
1303 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
3278 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1304 | { |
3279 | { |
1305 | ev_rt_now = rtmn_diff + mn_now; |
3280 | ev_rt_now = rtmn_diff + mn_now; |
1306 | return 0; |
3281 | return; |
1307 | } |
3282 | } |
1308 | else |
3283 | |
1309 | { |
|
|
1310 | now_floor = mn_now; |
3284 | now_floor = mn_now; |
1311 | ev_rt_now = ev_time (); |
3285 | ev_rt_now = ev_time (); |
1312 | return 1; |
|
|
1313 | } |
|
|
1314 | } |
|
|
1315 | |
3286 | |
1316 | void inline_size |
3287 | /* loop a few times, before making important decisions. |
1317 | time_update (EV_P) |
3288 | * on the choice of "4": one iteration isn't enough, |
1318 | { |
3289 | * in case we get preempted during the calls to |
1319 | int i; |
3290 | * ev_time and get_clock. a second call is almost guaranteed |
1320 | |
3291 | * to succeed in that case, though. and looping a few more times |
1321 | #if EV_USE_MONOTONIC |
3292 | * doesn't hurt either as we only do this on time-jumps or |
1322 | if (expect_true (have_monotonic)) |
3293 | * in the unlikely event of having been preempted here. |
1323 | { |
3294 | */ |
1324 | if (time_update_monotonic (EV_A)) |
3295 | for (i = 4; --i; ) |
1325 | { |
3296 | { |
1326 | ev_tstamp odiff = rtmn_diff; |
3297 | ev_tstamp diff; |
1327 | |
|
|
1328 | /* loop a few times, before making important decisions. |
|
|
1329 | * on the choice of "4": one iteration isn't enough, |
|
|
1330 | * in case we get preempted during the calls to |
|
|
1331 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1332 | * to succeed in that case, though. and looping a few more times |
|
|
1333 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1334 | * in the unlikely event of having been preempted here. |
|
|
1335 | */ |
|
|
1336 | for (i = 4; --i; ) |
|
|
1337 | { |
|
|
1338 | rtmn_diff = ev_rt_now - mn_now; |
3298 | rtmn_diff = ev_rt_now - mn_now; |
1339 | |
3299 | |
1340 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
3300 | diff = odiff - rtmn_diff; |
|
|
3301 | |
|
|
3302 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
1341 | return; /* all is well */ |
3303 | return; /* all is well */ |
1342 | |
3304 | |
1343 | ev_rt_now = ev_time (); |
3305 | ev_rt_now = ev_time (); |
1344 | mn_now = get_clock (); |
3306 | mn_now = get_clock (); |
1345 | now_floor = mn_now; |
3307 | now_floor = mn_now; |
1346 | } |
3308 | } |
1347 | |
3309 | |
|
|
3310 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
3311 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1348 | # if EV_PERIODIC_ENABLE |
3312 | # if EV_PERIODIC_ENABLE |
1349 | periodics_reschedule (EV_A); |
3313 | periodics_reschedule (EV_A); |
1350 | # endif |
3314 | # endif |
1351 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1352 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1353 | } |
|
|
1354 | } |
3315 | } |
1355 | else |
3316 | else |
1356 | #endif |
3317 | #endif |
1357 | { |
3318 | { |
1358 | ev_rt_now = ev_time (); |
3319 | ev_rt_now = ev_time (); |
1359 | |
3320 | |
1360 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
3321 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
1361 | { |
3322 | { |
|
|
3323 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
3324 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
1362 | #if EV_PERIODIC_ENABLE |
3325 | #if EV_PERIODIC_ENABLE |
1363 | periodics_reschedule (EV_A); |
3326 | periodics_reschedule (EV_A); |
1364 | #endif |
3327 | #endif |
1365 | |
|
|
1366 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1367 | for (i = 0; i < timercnt; ++i) |
|
|
1368 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1369 | } |
3328 | } |
1370 | |
3329 | |
1371 | mn_now = ev_rt_now; |
3330 | mn_now = ev_rt_now; |
1372 | } |
3331 | } |
1373 | } |
3332 | } |
1374 | |
3333 | |
1375 | void |
3334 | int |
1376 | ev_ref (EV_P) |
|
|
1377 | { |
|
|
1378 | ++activecnt; |
|
|
1379 | } |
|
|
1380 | |
|
|
1381 | void |
|
|
1382 | ev_unref (EV_P) |
|
|
1383 | { |
|
|
1384 | --activecnt; |
|
|
1385 | } |
|
|
1386 | |
|
|
1387 | static int loop_done; |
|
|
1388 | |
|
|
1389 | void |
|
|
1390 | ev_loop (EV_P_ int flags) |
3335 | ev_run (EV_P_ int flags) |
1391 | { |
3336 | { |
1392 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
3337 | #if EV_FEATURE_API |
1393 | ? EVUNLOOP_ONE |
3338 | ++loop_depth; |
1394 | : EVUNLOOP_CANCEL; |
3339 | #endif |
1395 | |
3340 | |
|
|
3341 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
3342 | |
|
|
3343 | loop_done = EVBREAK_CANCEL; |
|
|
3344 | |
1396 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
3345 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
1397 | |
3346 | |
1398 | do |
3347 | do |
1399 | { |
3348 | { |
|
|
3349 | #if EV_VERIFY >= 2 |
|
|
3350 | ev_verify (EV_A); |
|
|
3351 | #endif |
|
|
3352 | |
1400 | #ifndef _WIN32 |
3353 | #ifndef _WIN32 |
1401 | if (expect_false (curpid)) /* penalise the forking check even more */ |
3354 | if (expect_false (curpid)) /* penalise the forking check even more */ |
1402 | if (expect_false (getpid () != curpid)) |
3355 | if (expect_false (getpid () != curpid)) |
1403 | { |
3356 | { |
1404 | curpid = getpid (); |
3357 | curpid = getpid (); |
… | |
… | |
1410 | /* we might have forked, so queue fork handlers */ |
3363 | /* we might have forked, so queue fork handlers */ |
1411 | if (expect_false (postfork)) |
3364 | if (expect_false (postfork)) |
1412 | if (forkcnt) |
3365 | if (forkcnt) |
1413 | { |
3366 | { |
1414 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
3367 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
1415 | call_pending (EV_A); |
3368 | EV_INVOKE_PENDING; |
1416 | } |
3369 | } |
1417 | #endif |
3370 | #endif |
1418 | |
3371 | |
|
|
3372 | #if EV_PREPARE_ENABLE |
1419 | /* queue prepare watchers (and execute them) */ |
3373 | /* queue prepare watchers (and execute them) */ |
1420 | if (expect_false (preparecnt)) |
3374 | if (expect_false (preparecnt)) |
1421 | { |
3375 | { |
1422 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
3376 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1423 | call_pending (EV_A); |
3377 | EV_INVOKE_PENDING; |
1424 | } |
3378 | } |
|
|
3379 | #endif |
1425 | |
3380 | |
1426 | if (expect_false (!activecnt)) |
3381 | if (expect_false (loop_done)) |
1427 | break; |
3382 | break; |
1428 | |
3383 | |
1429 | /* we might have forked, so reify kernel state if necessary */ |
3384 | /* we might have forked, so reify kernel state if necessary */ |
1430 | if (expect_false (postfork)) |
3385 | if (expect_false (postfork)) |
1431 | loop_fork (EV_A); |
3386 | loop_fork (EV_A); |
… | |
… | |
1433 | /* update fd-related kernel structures */ |
3388 | /* update fd-related kernel structures */ |
1434 | fd_reify (EV_A); |
3389 | fd_reify (EV_A); |
1435 | |
3390 | |
1436 | /* calculate blocking time */ |
3391 | /* calculate blocking time */ |
1437 | { |
3392 | { |
1438 | ev_tstamp block; |
3393 | ev_tstamp waittime = 0.; |
|
|
3394 | ev_tstamp sleeptime = 0.; |
1439 | |
3395 | |
1440 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
3396 | /* remember old timestamp for io_blocktime calculation */ |
1441 | block = 0.; /* do not block at all */ |
3397 | ev_tstamp prev_mn_now = mn_now; |
1442 | else |
3398 | |
|
|
3399 | /* update time to cancel out callback processing overhead */ |
|
|
3400 | time_update (EV_A_ 1e100); |
|
|
3401 | |
|
|
3402 | /* from now on, we want a pipe-wake-up */ |
|
|
3403 | pipe_write_wanted = 1; |
|
|
3404 | |
|
|
3405 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3406 | |
|
|
3407 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
1443 | { |
3408 | { |
1444 | /* update time to cancel out callback processing overhead */ |
|
|
1445 | #if EV_USE_MONOTONIC |
|
|
1446 | if (expect_true (have_monotonic)) |
|
|
1447 | time_update_monotonic (EV_A); |
|
|
1448 | else |
|
|
1449 | #endif |
|
|
1450 | { |
|
|
1451 | ev_rt_now = ev_time (); |
|
|
1452 | mn_now = ev_rt_now; |
|
|
1453 | } |
|
|
1454 | |
|
|
1455 | block = MAX_BLOCKTIME; |
3409 | waittime = MAX_BLOCKTIME; |
1456 | |
3410 | |
1457 | if (timercnt) |
3411 | if (timercnt) |
1458 | { |
3412 | { |
1459 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
3413 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
1460 | if (block > to) block = to; |
3414 | if (waittime > to) waittime = to; |
1461 | } |
3415 | } |
1462 | |
3416 | |
1463 | #if EV_PERIODIC_ENABLE |
3417 | #if EV_PERIODIC_ENABLE |
1464 | if (periodiccnt) |
3418 | if (periodiccnt) |
1465 | { |
3419 | { |
1466 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
3420 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
1467 | if (block > to) block = to; |
3421 | if (waittime > to) waittime = to; |
1468 | } |
3422 | } |
1469 | #endif |
3423 | #endif |
1470 | |
3424 | |
|
|
3425 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
3426 | if (expect_false (waittime < timeout_blocktime)) |
|
|
3427 | waittime = timeout_blocktime; |
|
|
3428 | |
|
|
3429 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3430 | /* to pass a minimum nonzero value to the backend */ |
|
|
3431 | if (expect_false (waittime < backend_mintime)) |
|
|
3432 | waittime = backend_mintime; |
|
|
3433 | |
|
|
3434 | /* extra check because io_blocktime is commonly 0 */ |
1471 | if (expect_false (block < 0.)) block = 0.; |
3435 | if (expect_false (io_blocktime)) |
|
|
3436 | { |
|
|
3437 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
3438 | |
|
|
3439 | if (sleeptime > waittime - backend_mintime) |
|
|
3440 | sleeptime = waittime - backend_mintime; |
|
|
3441 | |
|
|
3442 | if (expect_true (sleeptime > 0.)) |
|
|
3443 | { |
|
|
3444 | ev_sleep (sleeptime); |
|
|
3445 | waittime -= sleeptime; |
|
|
3446 | } |
|
|
3447 | } |
1472 | } |
3448 | } |
1473 | |
3449 | |
|
|
3450 | #if EV_FEATURE_API |
1474 | ++loop_count; |
3451 | ++loop_count; |
|
|
3452 | #endif |
|
|
3453 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
1475 | backend_poll (EV_A_ block); |
3454 | backend_poll (EV_A_ waittime); |
|
|
3455 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
3456 | |
|
|
3457 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3458 | |
|
|
3459 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3460 | if (pipe_write_skipped) |
|
|
3461 | { |
|
|
3462 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3463 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3464 | } |
|
|
3465 | |
|
|
3466 | |
|
|
3467 | /* update ev_rt_now, do magic */ |
|
|
3468 | time_update (EV_A_ waittime + sleeptime); |
1476 | } |
3469 | } |
1477 | |
|
|
1478 | /* update ev_rt_now, do magic */ |
|
|
1479 | time_update (EV_A); |
|
|
1480 | |
3470 | |
1481 | /* queue pending timers and reschedule them */ |
3471 | /* queue pending timers and reschedule them */ |
1482 | timers_reify (EV_A); /* relative timers called last */ |
3472 | timers_reify (EV_A); /* relative timers called last */ |
1483 | #if EV_PERIODIC_ENABLE |
3473 | #if EV_PERIODIC_ENABLE |
1484 | periodics_reify (EV_A); /* absolute timers called first */ |
3474 | periodics_reify (EV_A); /* absolute timers called first */ |
… | |
… | |
1487 | #if EV_IDLE_ENABLE |
3477 | #if EV_IDLE_ENABLE |
1488 | /* queue idle watchers unless other events are pending */ |
3478 | /* queue idle watchers unless other events are pending */ |
1489 | idle_reify (EV_A); |
3479 | idle_reify (EV_A); |
1490 | #endif |
3480 | #endif |
1491 | |
3481 | |
|
|
3482 | #if EV_CHECK_ENABLE |
1492 | /* queue check watchers, to be executed first */ |
3483 | /* queue check watchers, to be executed first */ |
1493 | if (expect_false (checkcnt)) |
3484 | if (expect_false (checkcnt)) |
1494 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
3485 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3486 | #endif |
1495 | |
3487 | |
1496 | call_pending (EV_A); |
3488 | EV_INVOKE_PENDING; |
1497 | |
|
|
1498 | } |
3489 | } |
1499 | while (expect_true (activecnt && !loop_done)); |
3490 | while (expect_true ( |
|
|
3491 | activecnt |
|
|
3492 | && !loop_done |
|
|
3493 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
3494 | )); |
1500 | |
3495 | |
1501 | if (loop_done == EVUNLOOP_ONE) |
3496 | if (loop_done == EVBREAK_ONE) |
1502 | loop_done = EVUNLOOP_CANCEL; |
3497 | loop_done = EVBREAK_CANCEL; |
|
|
3498 | |
|
|
3499 | #if EV_FEATURE_API |
|
|
3500 | --loop_depth; |
|
|
3501 | #endif |
|
|
3502 | |
|
|
3503 | return activecnt; |
1503 | } |
3504 | } |
1504 | |
3505 | |
1505 | void |
3506 | void |
1506 | ev_unloop (EV_P_ int how) |
3507 | ev_break (EV_P_ int how) EV_THROW |
1507 | { |
3508 | { |
1508 | loop_done = how; |
3509 | loop_done = how; |
1509 | } |
3510 | } |
1510 | |
3511 | |
|
|
3512 | void |
|
|
3513 | ev_ref (EV_P) EV_THROW |
|
|
3514 | { |
|
|
3515 | ++activecnt; |
|
|
3516 | } |
|
|
3517 | |
|
|
3518 | void |
|
|
3519 | ev_unref (EV_P) EV_THROW |
|
|
3520 | { |
|
|
3521 | --activecnt; |
|
|
3522 | } |
|
|
3523 | |
|
|
3524 | void |
|
|
3525 | ev_now_update (EV_P) EV_THROW |
|
|
3526 | { |
|
|
3527 | time_update (EV_A_ 1e100); |
|
|
3528 | } |
|
|
3529 | |
|
|
3530 | void |
|
|
3531 | ev_suspend (EV_P) EV_THROW |
|
|
3532 | { |
|
|
3533 | ev_now_update (EV_A); |
|
|
3534 | } |
|
|
3535 | |
|
|
3536 | void |
|
|
3537 | ev_resume (EV_P) EV_THROW |
|
|
3538 | { |
|
|
3539 | ev_tstamp mn_prev = mn_now; |
|
|
3540 | |
|
|
3541 | ev_now_update (EV_A); |
|
|
3542 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
3543 | #if EV_PERIODIC_ENABLE |
|
|
3544 | /* TODO: really do this? */ |
|
|
3545 | periodics_reschedule (EV_A); |
|
|
3546 | #endif |
|
|
3547 | } |
|
|
3548 | |
1511 | /*****************************************************************************/ |
3549 | /*****************************************************************************/ |
|
|
3550 | /* singly-linked list management, used when the expected list length is short */ |
1512 | |
3551 | |
1513 | void inline_size |
3552 | inline_size void |
1514 | wlist_add (WL *head, WL elem) |
3553 | wlist_add (WL *head, WL elem) |
1515 | { |
3554 | { |
1516 | elem->next = *head; |
3555 | elem->next = *head; |
1517 | *head = elem; |
3556 | *head = elem; |
1518 | } |
3557 | } |
1519 | |
3558 | |
1520 | void inline_size |
3559 | inline_size void |
1521 | wlist_del (WL *head, WL elem) |
3560 | wlist_del (WL *head, WL elem) |
1522 | { |
3561 | { |
1523 | while (*head) |
3562 | while (*head) |
1524 | { |
3563 | { |
1525 | if (*head == elem) |
3564 | if (expect_true (*head == elem)) |
1526 | { |
3565 | { |
1527 | *head = elem->next; |
3566 | *head = elem->next; |
1528 | return; |
3567 | break; |
1529 | } |
3568 | } |
1530 | |
3569 | |
1531 | head = &(*head)->next; |
3570 | head = &(*head)->next; |
1532 | } |
3571 | } |
1533 | } |
3572 | } |
1534 | |
3573 | |
1535 | void inline_speed |
3574 | /* internal, faster, version of ev_clear_pending */ |
|
|
3575 | inline_speed void |
1536 | clear_pending (EV_P_ W w) |
3576 | clear_pending (EV_P_ W w) |
1537 | { |
3577 | { |
1538 | if (w->pending) |
3578 | if (w->pending) |
1539 | { |
3579 | { |
1540 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
3580 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1541 | w->pending = 0; |
3581 | w->pending = 0; |
1542 | } |
3582 | } |
1543 | } |
3583 | } |
1544 | |
3584 | |
1545 | int |
3585 | int |
1546 | ev_clear_pending (EV_P_ void *w) |
3586 | ev_clear_pending (EV_P_ void *w) EV_THROW |
1547 | { |
3587 | { |
1548 | W w_ = (W)w; |
3588 | W w_ = (W)w; |
1549 | int pending = w_->pending; |
3589 | int pending = w_->pending; |
1550 | |
3590 | |
1551 | if (expect_true (pending)) |
3591 | if (expect_true (pending)) |
1552 | { |
3592 | { |
1553 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
3593 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
3594 | p->w = (W)&pending_w; |
1554 | w_->pending = 0; |
3595 | w_->pending = 0; |
1555 | p->w = 0; |
|
|
1556 | return p->events; |
3596 | return p->events; |
1557 | } |
3597 | } |
1558 | else |
3598 | else |
1559 | return 0; |
3599 | return 0; |
1560 | } |
3600 | } |
1561 | |
3601 | |
1562 | void inline_size |
3602 | inline_size void |
1563 | pri_adjust (EV_P_ W w) |
3603 | pri_adjust (EV_P_ W w) |
1564 | { |
3604 | { |
1565 | int pri = w->priority; |
3605 | int pri = ev_priority (w); |
1566 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
3606 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
1567 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
3607 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
1568 | w->priority = pri; |
3608 | ev_set_priority (w, pri); |
1569 | } |
3609 | } |
1570 | |
3610 | |
1571 | void inline_speed |
3611 | inline_speed void |
1572 | ev_start (EV_P_ W w, int active) |
3612 | ev_start (EV_P_ W w, int active) |
1573 | { |
3613 | { |
1574 | pri_adjust (EV_A_ w); |
3614 | pri_adjust (EV_A_ w); |
1575 | w->active = active; |
3615 | w->active = active; |
1576 | ev_ref (EV_A); |
3616 | ev_ref (EV_A); |
1577 | } |
3617 | } |
1578 | |
3618 | |
1579 | void inline_size |
3619 | inline_size void |
1580 | ev_stop (EV_P_ W w) |
3620 | ev_stop (EV_P_ W w) |
1581 | { |
3621 | { |
1582 | ev_unref (EV_A); |
3622 | ev_unref (EV_A); |
1583 | w->active = 0; |
3623 | w->active = 0; |
1584 | } |
3624 | } |
1585 | |
3625 | |
1586 | /*****************************************************************************/ |
3626 | /*****************************************************************************/ |
1587 | |
3627 | |
1588 | void noinline |
3628 | void noinline |
1589 | ev_io_start (EV_P_ ev_io *w) |
3629 | ev_io_start (EV_P_ ev_io *w) EV_THROW |
1590 | { |
3630 | { |
1591 | int fd = w->fd; |
3631 | int fd = w->fd; |
1592 | |
3632 | |
1593 | if (expect_false (ev_is_active (w))) |
3633 | if (expect_false (ev_is_active (w))) |
1594 | return; |
3634 | return; |
1595 | |
3635 | |
1596 | assert (("ev_io_start called with negative fd", fd >= 0)); |
3636 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
3637 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
3638 | |
|
|
3639 | EV_FREQUENT_CHECK; |
1597 | |
3640 | |
1598 | ev_start (EV_A_ (W)w, 1); |
3641 | ev_start (EV_A_ (W)w, 1); |
1599 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
3642 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1600 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
3643 | wlist_add (&anfds[fd].head, (WL)w); |
1601 | |
3644 | |
1602 | fd_change (EV_A_ fd); |
3645 | /* common bug, apparently */ |
|
|
3646 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
|
|
3647 | |
|
|
3648 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
3649 | w->events &= ~EV__IOFDSET; |
|
|
3650 | |
|
|
3651 | EV_FREQUENT_CHECK; |
1603 | } |
3652 | } |
1604 | |
3653 | |
1605 | void noinline |
3654 | void noinline |
1606 | ev_io_stop (EV_P_ ev_io *w) |
3655 | ev_io_stop (EV_P_ ev_io *w) EV_THROW |
1607 | { |
3656 | { |
1608 | clear_pending (EV_A_ (W)w); |
3657 | clear_pending (EV_A_ (W)w); |
1609 | if (expect_false (!ev_is_active (w))) |
3658 | if (expect_false (!ev_is_active (w))) |
1610 | return; |
3659 | return; |
1611 | |
3660 | |
1612 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
3661 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1613 | |
3662 | |
|
|
3663 | EV_FREQUENT_CHECK; |
|
|
3664 | |
1614 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
3665 | wlist_del (&anfds[w->fd].head, (WL)w); |
1615 | ev_stop (EV_A_ (W)w); |
3666 | ev_stop (EV_A_ (W)w); |
1616 | |
3667 | |
1617 | fd_change (EV_A_ w->fd); |
3668 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
|
|
3669 | |
|
|
3670 | EV_FREQUENT_CHECK; |
1618 | } |
3671 | } |
1619 | |
3672 | |
1620 | void noinline |
3673 | void noinline |
1621 | ev_timer_start (EV_P_ ev_timer *w) |
3674 | ev_timer_start (EV_P_ ev_timer *w) EV_THROW |
1622 | { |
3675 | { |
1623 | if (expect_false (ev_is_active (w))) |
3676 | if (expect_false (ev_is_active (w))) |
1624 | return; |
3677 | return; |
1625 | |
3678 | |
1626 | ((WT)w)->at += mn_now; |
3679 | ev_at (w) += mn_now; |
1627 | |
3680 | |
1628 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
3681 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1629 | |
3682 | |
|
|
3683 | EV_FREQUENT_CHECK; |
|
|
3684 | |
|
|
3685 | ++timercnt; |
1630 | ev_start (EV_A_ (W)w, ++timercnt); |
3686 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1631 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
3687 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1632 | timers [timercnt - 1] = w; |
3688 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1633 | upheap ((WT *)timers, timercnt - 1); |
3689 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
3690 | upheap (timers, ev_active (w)); |
1634 | |
3691 | |
|
|
3692 | EV_FREQUENT_CHECK; |
|
|
3693 | |
1635 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
3694 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1636 | } |
3695 | } |
1637 | |
3696 | |
1638 | void noinline |
3697 | void noinline |
1639 | ev_timer_stop (EV_P_ ev_timer *w) |
3698 | ev_timer_stop (EV_P_ ev_timer *w) EV_THROW |
1640 | { |
3699 | { |
1641 | clear_pending (EV_A_ (W)w); |
3700 | clear_pending (EV_A_ (W)w); |
1642 | if (expect_false (!ev_is_active (w))) |
3701 | if (expect_false (!ev_is_active (w))) |
1643 | return; |
3702 | return; |
1644 | |
3703 | |
1645 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
3704 | EV_FREQUENT_CHECK; |
1646 | |
3705 | |
1647 | { |
3706 | { |
1648 | int active = ((W)w)->active; |
3707 | int active = ev_active (w); |
1649 | |
3708 | |
|
|
3709 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
3710 | |
|
|
3711 | --timercnt; |
|
|
3712 | |
1650 | if (expect_true (--active < --timercnt)) |
3713 | if (expect_true (active < timercnt + HEAP0)) |
1651 | { |
3714 | { |
1652 | timers [active] = timers [timercnt]; |
3715 | timers [active] = timers [timercnt + HEAP0]; |
1653 | adjustheap ((WT *)timers, timercnt, active); |
3716 | adjustheap (timers, timercnt, active); |
1654 | } |
3717 | } |
1655 | } |
3718 | } |
1656 | |
3719 | |
1657 | ((WT)w)->at -= mn_now; |
3720 | ev_at (w) -= mn_now; |
1658 | |
3721 | |
1659 | ev_stop (EV_A_ (W)w); |
3722 | ev_stop (EV_A_ (W)w); |
|
|
3723 | |
|
|
3724 | EV_FREQUENT_CHECK; |
1660 | } |
3725 | } |
1661 | |
3726 | |
1662 | void noinline |
3727 | void noinline |
1663 | ev_timer_again (EV_P_ ev_timer *w) |
3728 | ev_timer_again (EV_P_ ev_timer *w) EV_THROW |
1664 | { |
3729 | { |
|
|
3730 | EV_FREQUENT_CHECK; |
|
|
3731 | |
|
|
3732 | clear_pending (EV_A_ (W)w); |
|
|
3733 | |
1665 | if (ev_is_active (w)) |
3734 | if (ev_is_active (w)) |
1666 | { |
3735 | { |
1667 | if (w->repeat) |
3736 | if (w->repeat) |
1668 | { |
3737 | { |
1669 | ((WT)w)->at = mn_now + w->repeat; |
3738 | ev_at (w) = mn_now + w->repeat; |
|
|
3739 | ANHE_at_cache (timers [ev_active (w)]); |
1670 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
3740 | adjustheap (timers, timercnt, ev_active (w)); |
1671 | } |
3741 | } |
1672 | else |
3742 | else |
1673 | ev_timer_stop (EV_A_ w); |
3743 | ev_timer_stop (EV_A_ w); |
1674 | } |
3744 | } |
1675 | else if (w->repeat) |
3745 | else if (w->repeat) |
1676 | { |
3746 | { |
1677 | w->at = w->repeat; |
3747 | ev_at (w) = w->repeat; |
1678 | ev_timer_start (EV_A_ w); |
3748 | ev_timer_start (EV_A_ w); |
1679 | } |
3749 | } |
|
|
3750 | |
|
|
3751 | EV_FREQUENT_CHECK; |
|
|
3752 | } |
|
|
3753 | |
|
|
3754 | ev_tstamp |
|
|
3755 | ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW |
|
|
3756 | { |
|
|
3757 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
1680 | } |
3758 | } |
1681 | |
3759 | |
1682 | #if EV_PERIODIC_ENABLE |
3760 | #if EV_PERIODIC_ENABLE |
1683 | void noinline |
3761 | void noinline |
1684 | ev_periodic_start (EV_P_ ev_periodic *w) |
3762 | ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW |
1685 | { |
3763 | { |
1686 | if (expect_false (ev_is_active (w))) |
3764 | if (expect_false (ev_is_active (w))) |
1687 | return; |
3765 | return; |
1688 | |
3766 | |
1689 | if (w->reschedule_cb) |
3767 | if (w->reschedule_cb) |
1690 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
3768 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1691 | else if (w->interval) |
3769 | else if (w->interval) |
1692 | { |
3770 | { |
1693 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
3771 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1694 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
3772 | periodic_recalc (EV_A_ w); |
1695 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1696 | } |
3773 | } |
1697 | else |
3774 | else |
1698 | ((WT)w)->at = w->offset; |
3775 | ev_at (w) = w->offset; |
1699 | |
3776 | |
|
|
3777 | EV_FREQUENT_CHECK; |
|
|
3778 | |
|
|
3779 | ++periodiccnt; |
1700 | ev_start (EV_A_ (W)w, ++periodiccnt); |
3780 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1701 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
3781 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1702 | periodics [periodiccnt - 1] = w; |
3782 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1703 | upheap ((WT *)periodics, periodiccnt - 1); |
3783 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
3784 | upheap (periodics, ev_active (w)); |
1704 | |
3785 | |
|
|
3786 | EV_FREQUENT_CHECK; |
|
|
3787 | |
1705 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
3788 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1706 | } |
3789 | } |
1707 | |
3790 | |
1708 | void noinline |
3791 | void noinline |
1709 | ev_periodic_stop (EV_P_ ev_periodic *w) |
3792 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW |
1710 | { |
3793 | { |
1711 | clear_pending (EV_A_ (W)w); |
3794 | clear_pending (EV_A_ (W)w); |
1712 | if (expect_false (!ev_is_active (w))) |
3795 | if (expect_false (!ev_is_active (w))) |
1713 | return; |
3796 | return; |
1714 | |
3797 | |
1715 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
3798 | EV_FREQUENT_CHECK; |
1716 | |
3799 | |
1717 | { |
3800 | { |
1718 | int active = ((W)w)->active; |
3801 | int active = ev_active (w); |
1719 | |
3802 | |
|
|
3803 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
3804 | |
|
|
3805 | --periodiccnt; |
|
|
3806 | |
1720 | if (expect_true (--active < --periodiccnt)) |
3807 | if (expect_true (active < periodiccnt + HEAP0)) |
1721 | { |
3808 | { |
1722 | periodics [active] = periodics [periodiccnt]; |
3809 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1723 | adjustheap ((WT *)periodics, periodiccnt, active); |
3810 | adjustheap (periodics, periodiccnt, active); |
1724 | } |
3811 | } |
1725 | } |
3812 | } |
1726 | |
3813 | |
1727 | ev_stop (EV_A_ (W)w); |
3814 | ev_stop (EV_A_ (W)w); |
|
|
3815 | |
|
|
3816 | EV_FREQUENT_CHECK; |
1728 | } |
3817 | } |
1729 | |
3818 | |
1730 | void noinline |
3819 | void noinline |
1731 | ev_periodic_again (EV_P_ ev_periodic *w) |
3820 | ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW |
1732 | { |
3821 | { |
1733 | /* TODO: use adjustheap and recalculation */ |
3822 | /* TODO: use adjustheap and recalculation */ |
1734 | ev_periodic_stop (EV_A_ w); |
3823 | ev_periodic_stop (EV_A_ w); |
1735 | ev_periodic_start (EV_A_ w); |
3824 | ev_periodic_start (EV_A_ w); |
1736 | } |
3825 | } |
… | |
… | |
1738 | |
3827 | |
1739 | #ifndef SA_RESTART |
3828 | #ifndef SA_RESTART |
1740 | # define SA_RESTART 0 |
3829 | # define SA_RESTART 0 |
1741 | #endif |
3830 | #endif |
1742 | |
3831 | |
|
|
3832 | #if EV_SIGNAL_ENABLE |
|
|
3833 | |
1743 | void noinline |
3834 | void noinline |
1744 | ev_signal_start (EV_P_ ev_signal *w) |
3835 | ev_signal_start (EV_P_ ev_signal *w) EV_THROW |
1745 | { |
3836 | { |
1746 | #if EV_MULTIPLICITY |
|
|
1747 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1748 | #endif |
|
|
1749 | if (expect_false (ev_is_active (w))) |
3837 | if (expect_false (ev_is_active (w))) |
1750 | return; |
3838 | return; |
1751 | |
3839 | |
1752 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
3840 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
3841 | |
|
|
3842 | #if EV_MULTIPLICITY |
|
|
3843 | assert (("libev: a signal must not be attached to two different loops", |
|
|
3844 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
3845 | |
|
|
3846 | signals [w->signum - 1].loop = EV_A; |
|
|
3847 | ECB_MEMORY_FENCE_RELEASE; |
|
|
3848 | #endif |
|
|
3849 | |
|
|
3850 | EV_FREQUENT_CHECK; |
|
|
3851 | |
|
|
3852 | #if EV_USE_SIGNALFD |
|
|
3853 | if (sigfd == -2) |
|
|
3854 | { |
|
|
3855 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
3856 | if (sigfd < 0 && errno == EINVAL) |
|
|
3857 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
3858 | |
|
|
3859 | if (sigfd >= 0) |
|
|
3860 | { |
|
|
3861 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
3862 | |
|
|
3863 | sigemptyset (&sigfd_set); |
|
|
3864 | |
|
|
3865 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
3866 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
3867 | ev_io_start (EV_A_ &sigfd_w); |
|
|
3868 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
3869 | } |
|
|
3870 | } |
|
|
3871 | |
|
|
3872 | if (sigfd >= 0) |
|
|
3873 | { |
|
|
3874 | /* TODO: check .head */ |
|
|
3875 | sigaddset (&sigfd_set, w->signum); |
|
|
3876 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
3877 | |
|
|
3878 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3879 | } |
|
|
3880 | #endif |
1753 | |
3881 | |
1754 | ev_start (EV_A_ (W)w, 1); |
3882 | ev_start (EV_A_ (W)w, 1); |
1755 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1756 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
3883 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1757 | |
3884 | |
1758 | if (!((WL)w)->next) |
3885 | if (!((WL)w)->next) |
|
|
3886 | # if EV_USE_SIGNALFD |
|
|
3887 | if (sigfd < 0) /*TODO*/ |
|
|
3888 | # endif |
1759 | { |
3889 | { |
1760 | #if _WIN32 |
3890 | # ifdef _WIN32 |
|
|
3891 | evpipe_init (EV_A); |
|
|
3892 | |
1761 | signal (w->signum, sighandler); |
3893 | signal (w->signum, ev_sighandler); |
1762 | #else |
3894 | # else |
1763 | struct sigaction sa; |
3895 | struct sigaction sa; |
|
|
3896 | |
|
|
3897 | evpipe_init (EV_A); |
|
|
3898 | |
1764 | sa.sa_handler = sighandler; |
3899 | sa.sa_handler = ev_sighandler; |
1765 | sigfillset (&sa.sa_mask); |
3900 | sigfillset (&sa.sa_mask); |
1766 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3901 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1767 | sigaction (w->signum, &sa, 0); |
3902 | sigaction (w->signum, &sa, 0); |
|
|
3903 | |
|
|
3904 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3905 | { |
|
|
3906 | sigemptyset (&sa.sa_mask); |
|
|
3907 | sigaddset (&sa.sa_mask, w->signum); |
|
|
3908 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3909 | } |
1768 | #endif |
3910 | #endif |
1769 | } |
3911 | } |
|
|
3912 | |
|
|
3913 | EV_FREQUENT_CHECK; |
1770 | } |
3914 | } |
1771 | |
3915 | |
1772 | void noinline |
3916 | void noinline |
1773 | ev_signal_stop (EV_P_ ev_signal *w) |
3917 | ev_signal_stop (EV_P_ ev_signal *w) EV_THROW |
1774 | { |
3918 | { |
1775 | clear_pending (EV_A_ (W)w); |
3919 | clear_pending (EV_A_ (W)w); |
1776 | if (expect_false (!ev_is_active (w))) |
3920 | if (expect_false (!ev_is_active (w))) |
1777 | return; |
3921 | return; |
1778 | |
3922 | |
|
|
3923 | EV_FREQUENT_CHECK; |
|
|
3924 | |
1779 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
3925 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1780 | ev_stop (EV_A_ (W)w); |
3926 | ev_stop (EV_A_ (W)w); |
1781 | |
3927 | |
1782 | if (!signals [w->signum - 1].head) |
3928 | if (!signals [w->signum - 1].head) |
|
|
3929 | { |
|
|
3930 | #if EV_MULTIPLICITY |
|
|
3931 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
3932 | #endif |
|
|
3933 | #if EV_USE_SIGNALFD |
|
|
3934 | if (sigfd >= 0) |
|
|
3935 | { |
|
|
3936 | sigset_t ss; |
|
|
3937 | |
|
|
3938 | sigemptyset (&ss); |
|
|
3939 | sigaddset (&ss, w->signum); |
|
|
3940 | sigdelset (&sigfd_set, w->signum); |
|
|
3941 | |
|
|
3942 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3943 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
3944 | } |
|
|
3945 | else |
|
|
3946 | #endif |
1783 | signal (w->signum, SIG_DFL); |
3947 | signal (w->signum, SIG_DFL); |
|
|
3948 | } |
|
|
3949 | |
|
|
3950 | EV_FREQUENT_CHECK; |
1784 | } |
3951 | } |
|
|
3952 | |
|
|
3953 | #endif |
|
|
3954 | |
|
|
3955 | #if EV_CHILD_ENABLE |
1785 | |
3956 | |
1786 | void |
3957 | void |
1787 | ev_child_start (EV_P_ ev_child *w) |
3958 | ev_child_start (EV_P_ ev_child *w) EV_THROW |
1788 | { |
3959 | { |
1789 | #if EV_MULTIPLICITY |
3960 | #if EV_MULTIPLICITY |
1790 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
3961 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1791 | #endif |
3962 | #endif |
1792 | if (expect_false (ev_is_active (w))) |
3963 | if (expect_false (ev_is_active (w))) |
1793 | return; |
3964 | return; |
1794 | |
3965 | |
|
|
3966 | EV_FREQUENT_CHECK; |
|
|
3967 | |
1795 | ev_start (EV_A_ (W)w, 1); |
3968 | ev_start (EV_A_ (W)w, 1); |
1796 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
3969 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
3970 | |
|
|
3971 | EV_FREQUENT_CHECK; |
1797 | } |
3972 | } |
1798 | |
3973 | |
1799 | void |
3974 | void |
1800 | ev_child_stop (EV_P_ ev_child *w) |
3975 | ev_child_stop (EV_P_ ev_child *w) EV_THROW |
1801 | { |
3976 | { |
1802 | clear_pending (EV_A_ (W)w); |
3977 | clear_pending (EV_A_ (W)w); |
1803 | if (expect_false (!ev_is_active (w))) |
3978 | if (expect_false (!ev_is_active (w))) |
1804 | return; |
3979 | return; |
1805 | |
3980 | |
|
|
3981 | EV_FREQUENT_CHECK; |
|
|
3982 | |
1806 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
3983 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1807 | ev_stop (EV_A_ (W)w); |
3984 | ev_stop (EV_A_ (W)w); |
|
|
3985 | |
|
|
3986 | EV_FREQUENT_CHECK; |
1808 | } |
3987 | } |
|
|
3988 | |
|
|
3989 | #endif |
1809 | |
3990 | |
1810 | #if EV_STAT_ENABLE |
3991 | #if EV_STAT_ENABLE |
1811 | |
3992 | |
1812 | # ifdef _WIN32 |
3993 | # ifdef _WIN32 |
1813 | # undef lstat |
3994 | # undef lstat |
1814 | # define lstat(a,b) _stati64 (a,b) |
3995 | # define lstat(a,b) _stati64 (a,b) |
1815 | # endif |
3996 | # endif |
1816 | |
3997 | |
1817 | #define DEF_STAT_INTERVAL 5.0074891 |
3998 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
3999 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
1818 | #define MIN_STAT_INTERVAL 0.1074891 |
4000 | #define MIN_STAT_INTERVAL 0.1074891 |
1819 | |
4001 | |
1820 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
4002 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
1821 | |
4003 | |
1822 | #if EV_USE_INOTIFY |
4004 | #if EV_USE_INOTIFY |
1823 | # define EV_INOTIFY_BUFSIZE 8192 |
4005 | |
|
|
4006 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
4007 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
1824 | |
4008 | |
1825 | static void noinline |
4009 | static void noinline |
1826 | infy_add (EV_P_ ev_stat *w) |
4010 | infy_add (EV_P_ ev_stat *w) |
1827 | { |
4011 | { |
1828 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
4012 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4013 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4014 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4015 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
1829 | |
4016 | |
1830 | if (w->wd < 0) |
4017 | if (w->wd >= 0) |
|
|
4018 | { |
|
|
4019 | struct statfs sfs; |
|
|
4020 | |
|
|
4021 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
4022 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
4023 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
4024 | |
|
|
4025 | if (!fs_2625) |
|
|
4026 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4027 | else if (!statfs (w->path, &sfs) |
|
|
4028 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4029 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4030 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
4031 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4032 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4033 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4034 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
4035 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4036 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
4037 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
4038 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
4039 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
4040 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
4041 | else |
|
|
4042 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
1831 | { |
4043 | } |
1832 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
4044 | else |
|
|
4045 | { |
|
|
4046 | /* can't use inotify, continue to stat */ |
|
|
4047 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
1833 | |
4048 | |
1834 | /* monitor some parent directory for speedup hints */ |
4049 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
4050 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
4051 | /* but an efficiency issue only */ |
1835 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
4052 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
1836 | { |
4053 | { |
1837 | char path [4096]; |
4054 | char path [4096]; |
1838 | strcpy (path, w->path); |
4055 | strcpy (path, w->path); |
1839 | |
4056 | |
… | |
… | |
1842 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
4059 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
1843 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
4060 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
1844 | |
4061 | |
1845 | char *pend = strrchr (path, '/'); |
4062 | char *pend = strrchr (path, '/'); |
1846 | |
4063 | |
1847 | if (!pend) |
4064 | if (!pend || pend == path) |
1848 | break; /* whoops, no '/', complain to your admin */ |
4065 | break; |
1849 | |
4066 | |
1850 | *pend = 0; |
4067 | *pend = 0; |
1851 | w->wd = inotify_add_watch (fs_fd, path, mask); |
4068 | w->wd = inotify_add_watch (fs_fd, path, mask); |
1852 | } |
4069 | } |
1853 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
4070 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
1854 | } |
4071 | } |
1855 | } |
4072 | } |
1856 | else |
|
|
1857 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
1858 | |
4073 | |
1859 | if (w->wd >= 0) |
4074 | if (w->wd >= 0) |
1860 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
4075 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4076 | |
|
|
4077 | /* now re-arm timer, if required */ |
|
|
4078 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4079 | ev_timer_again (EV_A_ &w->timer); |
|
|
4080 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
1861 | } |
4081 | } |
1862 | |
4082 | |
1863 | static void noinline |
4083 | static void noinline |
1864 | infy_del (EV_P_ ev_stat *w) |
4084 | infy_del (EV_P_ ev_stat *w) |
1865 | { |
4085 | { |
… | |
… | |
1868 | |
4088 | |
1869 | if (wd < 0) |
4089 | if (wd < 0) |
1870 | return; |
4090 | return; |
1871 | |
4091 | |
1872 | w->wd = -2; |
4092 | w->wd = -2; |
1873 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
4093 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
1874 | wlist_del (&fs_hash [slot].head, (WL)w); |
4094 | wlist_del (&fs_hash [slot].head, (WL)w); |
1875 | |
4095 | |
1876 | /* remove this watcher, if others are watching it, they will rearm */ |
4096 | /* remove this watcher, if others are watching it, they will rearm */ |
1877 | inotify_rm_watch (fs_fd, wd); |
4097 | inotify_rm_watch (fs_fd, wd); |
1878 | } |
4098 | } |
1879 | |
4099 | |
1880 | static void noinline |
4100 | static void noinline |
1881 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
4101 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
1882 | { |
4102 | { |
1883 | if (slot < 0) |
4103 | if (slot < 0) |
1884 | /* overflow, need to check for all hahs slots */ |
4104 | /* overflow, need to check for all hash slots */ |
1885 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
4105 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
1886 | infy_wd (EV_A_ slot, wd, ev); |
4106 | infy_wd (EV_A_ slot, wd, ev); |
1887 | else |
4107 | else |
1888 | { |
4108 | { |
1889 | WL w_; |
4109 | WL w_; |
1890 | |
4110 | |
1891 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
4111 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
1892 | { |
4112 | { |
1893 | ev_stat *w = (ev_stat *)w_; |
4113 | ev_stat *w = (ev_stat *)w_; |
1894 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
4114 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
1895 | |
4115 | |
1896 | if (w->wd == wd || wd == -1) |
4116 | if (w->wd == wd || wd == -1) |
1897 | { |
4117 | { |
1898 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
4118 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
1899 | { |
4119 | { |
|
|
4120 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
1900 | w->wd = -1; |
4121 | w->wd = -1; |
1901 | infy_add (EV_A_ w); /* re-add, no matter what */ |
4122 | infy_add (EV_A_ w); /* re-add, no matter what */ |
1902 | } |
4123 | } |
1903 | |
4124 | |
1904 | stat_timer_cb (EV_A_ &w->timer, 0); |
4125 | stat_timer_cb (EV_A_ &w->timer, 0); |
… | |
… | |
1909 | |
4130 | |
1910 | static void |
4131 | static void |
1911 | infy_cb (EV_P_ ev_io *w, int revents) |
4132 | infy_cb (EV_P_ ev_io *w, int revents) |
1912 | { |
4133 | { |
1913 | char buf [EV_INOTIFY_BUFSIZE]; |
4134 | char buf [EV_INOTIFY_BUFSIZE]; |
1914 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
1915 | int ofs; |
4135 | int ofs; |
1916 | int len = read (fs_fd, buf, sizeof (buf)); |
4136 | int len = read (fs_fd, buf, sizeof (buf)); |
1917 | |
4137 | |
1918 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
4138 | for (ofs = 0; ofs < len; ) |
|
|
4139 | { |
|
|
4140 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
1919 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
4141 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4142 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
4143 | } |
1920 | } |
4144 | } |
1921 | |
4145 | |
1922 | void inline_size |
4146 | inline_size void ecb_cold |
|
|
4147 | ev_check_2625 (EV_P) |
|
|
4148 | { |
|
|
4149 | /* kernels < 2.6.25 are borked |
|
|
4150 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
4151 | */ |
|
|
4152 | if (ev_linux_version () < 0x020619) |
|
|
4153 | return; |
|
|
4154 | |
|
|
4155 | fs_2625 = 1; |
|
|
4156 | } |
|
|
4157 | |
|
|
4158 | inline_size int |
|
|
4159 | infy_newfd (void) |
|
|
4160 | { |
|
|
4161 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4162 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4163 | if (fd >= 0) |
|
|
4164 | return fd; |
|
|
4165 | #endif |
|
|
4166 | return inotify_init (); |
|
|
4167 | } |
|
|
4168 | |
|
|
4169 | inline_size void |
1923 | infy_init (EV_P) |
4170 | infy_init (EV_P) |
1924 | { |
4171 | { |
1925 | if (fs_fd != -2) |
4172 | if (fs_fd != -2) |
1926 | return; |
4173 | return; |
1927 | |
4174 | |
|
|
4175 | fs_fd = -1; |
|
|
4176 | |
|
|
4177 | ev_check_2625 (EV_A); |
|
|
4178 | |
1928 | fs_fd = inotify_init (); |
4179 | fs_fd = infy_newfd (); |
1929 | |
4180 | |
1930 | if (fs_fd >= 0) |
4181 | if (fs_fd >= 0) |
1931 | { |
4182 | { |
|
|
4183 | fd_intern (fs_fd); |
1932 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
4184 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
1933 | ev_set_priority (&fs_w, EV_MAXPRI); |
4185 | ev_set_priority (&fs_w, EV_MAXPRI); |
1934 | ev_io_start (EV_A_ &fs_w); |
4186 | ev_io_start (EV_A_ &fs_w); |
|
|
4187 | ev_unref (EV_A); |
1935 | } |
4188 | } |
1936 | } |
4189 | } |
1937 | |
4190 | |
1938 | void inline_size |
4191 | inline_size void |
1939 | infy_fork (EV_P) |
4192 | infy_fork (EV_P) |
1940 | { |
4193 | { |
1941 | int slot; |
4194 | int slot; |
1942 | |
4195 | |
1943 | if (fs_fd < 0) |
4196 | if (fs_fd < 0) |
1944 | return; |
4197 | return; |
1945 | |
4198 | |
|
|
4199 | ev_ref (EV_A); |
|
|
4200 | ev_io_stop (EV_A_ &fs_w); |
1946 | close (fs_fd); |
4201 | close (fs_fd); |
1947 | fs_fd = inotify_init (); |
4202 | fs_fd = infy_newfd (); |
1948 | |
4203 | |
|
|
4204 | if (fs_fd >= 0) |
|
|
4205 | { |
|
|
4206 | fd_intern (fs_fd); |
|
|
4207 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4208 | ev_io_start (EV_A_ &fs_w); |
|
|
4209 | ev_unref (EV_A); |
|
|
4210 | } |
|
|
4211 | |
1949 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
4212 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
1950 | { |
4213 | { |
1951 | WL w_ = fs_hash [slot].head; |
4214 | WL w_ = fs_hash [slot].head; |
1952 | fs_hash [slot].head = 0; |
4215 | fs_hash [slot].head = 0; |
1953 | |
4216 | |
1954 | while (w_) |
4217 | while (w_) |
… | |
… | |
1959 | w->wd = -1; |
4222 | w->wd = -1; |
1960 | |
4223 | |
1961 | if (fs_fd >= 0) |
4224 | if (fs_fd >= 0) |
1962 | infy_add (EV_A_ w); /* re-add, no matter what */ |
4225 | infy_add (EV_A_ w); /* re-add, no matter what */ |
1963 | else |
4226 | else |
|
|
4227 | { |
|
|
4228 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4229 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
1964 | ev_timer_start (EV_A_ &w->timer); |
4230 | ev_timer_again (EV_A_ &w->timer); |
|
|
4231 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4232 | } |
1965 | } |
4233 | } |
1966 | |
|
|
1967 | } |
4234 | } |
1968 | } |
4235 | } |
1969 | |
4236 | |
|
|
4237 | #endif |
|
|
4238 | |
|
|
4239 | #ifdef _WIN32 |
|
|
4240 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
4241 | #else |
|
|
4242 | # define EV_LSTAT(p,b) lstat (p, b) |
1970 | #endif |
4243 | #endif |
1971 | |
4244 | |
1972 | void |
4245 | void |
1973 | ev_stat_stat (EV_P_ ev_stat *w) |
4246 | ev_stat_stat (EV_P_ ev_stat *w) EV_THROW |
1974 | { |
4247 | { |
1975 | if (lstat (w->path, &w->attr) < 0) |
4248 | if (lstat (w->path, &w->attr) < 0) |
1976 | w->attr.st_nlink = 0; |
4249 | w->attr.st_nlink = 0; |
1977 | else if (!w->attr.st_nlink) |
4250 | else if (!w->attr.st_nlink) |
1978 | w->attr.st_nlink = 1; |
4251 | w->attr.st_nlink = 1; |
… | |
… | |
1981 | static void noinline |
4254 | static void noinline |
1982 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
4255 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
1983 | { |
4256 | { |
1984 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
4257 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
1985 | |
4258 | |
1986 | /* we copy this here each the time so that */ |
4259 | ev_statdata prev = w->attr; |
1987 | /* prev has the old value when the callback gets invoked */ |
|
|
1988 | w->prev = w->attr; |
|
|
1989 | ev_stat_stat (EV_A_ w); |
4260 | ev_stat_stat (EV_A_ w); |
1990 | |
4261 | |
1991 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
4262 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
1992 | if ( |
4263 | if ( |
1993 | w->prev.st_dev != w->attr.st_dev |
4264 | prev.st_dev != w->attr.st_dev |
1994 | || w->prev.st_ino != w->attr.st_ino |
4265 | || prev.st_ino != w->attr.st_ino |
1995 | || w->prev.st_mode != w->attr.st_mode |
4266 | || prev.st_mode != w->attr.st_mode |
1996 | || w->prev.st_nlink != w->attr.st_nlink |
4267 | || prev.st_nlink != w->attr.st_nlink |
1997 | || w->prev.st_uid != w->attr.st_uid |
4268 | || prev.st_uid != w->attr.st_uid |
1998 | || w->prev.st_gid != w->attr.st_gid |
4269 | || prev.st_gid != w->attr.st_gid |
1999 | || w->prev.st_rdev != w->attr.st_rdev |
4270 | || prev.st_rdev != w->attr.st_rdev |
2000 | || w->prev.st_size != w->attr.st_size |
4271 | || prev.st_size != w->attr.st_size |
2001 | || w->prev.st_atime != w->attr.st_atime |
4272 | || prev.st_atime != w->attr.st_atime |
2002 | || w->prev.st_mtime != w->attr.st_mtime |
4273 | || prev.st_mtime != w->attr.st_mtime |
2003 | || w->prev.st_ctime != w->attr.st_ctime |
4274 | || prev.st_ctime != w->attr.st_ctime |
2004 | ) { |
4275 | ) { |
|
|
4276 | /* we only update w->prev on actual differences */ |
|
|
4277 | /* in case we test more often than invoke the callback, */ |
|
|
4278 | /* to ensure that prev is always different to attr */ |
|
|
4279 | w->prev = prev; |
|
|
4280 | |
2005 | #if EV_USE_INOTIFY |
4281 | #if EV_USE_INOTIFY |
|
|
4282 | if (fs_fd >= 0) |
|
|
4283 | { |
2006 | infy_del (EV_A_ w); |
4284 | infy_del (EV_A_ w); |
2007 | infy_add (EV_A_ w); |
4285 | infy_add (EV_A_ w); |
2008 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
4286 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
4287 | } |
2009 | #endif |
4288 | #endif |
2010 | |
4289 | |
2011 | ev_feed_event (EV_A_ w, EV_STAT); |
4290 | ev_feed_event (EV_A_ w, EV_STAT); |
2012 | } |
4291 | } |
2013 | } |
4292 | } |
2014 | |
4293 | |
2015 | void |
4294 | void |
2016 | ev_stat_start (EV_P_ ev_stat *w) |
4295 | ev_stat_start (EV_P_ ev_stat *w) EV_THROW |
2017 | { |
4296 | { |
2018 | if (expect_false (ev_is_active (w))) |
4297 | if (expect_false (ev_is_active (w))) |
2019 | return; |
4298 | return; |
2020 | |
4299 | |
2021 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2022 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2023 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2024 | |
|
|
2025 | ev_stat_stat (EV_A_ w); |
4300 | ev_stat_stat (EV_A_ w); |
2026 | |
4301 | |
|
|
4302 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
2027 | if (w->interval < MIN_STAT_INTERVAL) |
4303 | w->interval = MIN_STAT_INTERVAL; |
2028 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2029 | |
4304 | |
2030 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
4305 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
2031 | ev_set_priority (&w->timer, ev_priority (w)); |
4306 | ev_set_priority (&w->timer, ev_priority (w)); |
2032 | |
4307 | |
2033 | #if EV_USE_INOTIFY |
4308 | #if EV_USE_INOTIFY |
2034 | infy_init (EV_A); |
4309 | infy_init (EV_A); |
2035 | |
4310 | |
2036 | if (fs_fd >= 0) |
4311 | if (fs_fd >= 0) |
2037 | infy_add (EV_A_ w); |
4312 | infy_add (EV_A_ w); |
2038 | else |
4313 | else |
2039 | #endif |
4314 | #endif |
|
|
4315 | { |
2040 | ev_timer_start (EV_A_ &w->timer); |
4316 | ev_timer_again (EV_A_ &w->timer); |
|
|
4317 | ev_unref (EV_A); |
|
|
4318 | } |
2041 | |
4319 | |
2042 | ev_start (EV_A_ (W)w, 1); |
4320 | ev_start (EV_A_ (W)w, 1); |
|
|
4321 | |
|
|
4322 | EV_FREQUENT_CHECK; |
2043 | } |
4323 | } |
2044 | |
4324 | |
2045 | void |
4325 | void |
2046 | ev_stat_stop (EV_P_ ev_stat *w) |
4326 | ev_stat_stop (EV_P_ ev_stat *w) EV_THROW |
2047 | { |
4327 | { |
2048 | clear_pending (EV_A_ (W)w); |
4328 | clear_pending (EV_A_ (W)w); |
2049 | if (expect_false (!ev_is_active (w))) |
4329 | if (expect_false (!ev_is_active (w))) |
2050 | return; |
4330 | return; |
2051 | |
4331 | |
|
|
4332 | EV_FREQUENT_CHECK; |
|
|
4333 | |
2052 | #if EV_USE_INOTIFY |
4334 | #if EV_USE_INOTIFY |
2053 | infy_del (EV_A_ w); |
4335 | infy_del (EV_A_ w); |
2054 | #endif |
4336 | #endif |
|
|
4337 | |
|
|
4338 | if (ev_is_active (&w->timer)) |
|
|
4339 | { |
|
|
4340 | ev_ref (EV_A); |
2055 | ev_timer_stop (EV_A_ &w->timer); |
4341 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4342 | } |
2056 | |
4343 | |
2057 | ev_stop (EV_A_ (W)w); |
4344 | ev_stop (EV_A_ (W)w); |
|
|
4345 | |
|
|
4346 | EV_FREQUENT_CHECK; |
2058 | } |
4347 | } |
2059 | #endif |
4348 | #endif |
2060 | |
4349 | |
2061 | #if EV_IDLE_ENABLE |
4350 | #if EV_IDLE_ENABLE |
2062 | void |
4351 | void |
2063 | ev_idle_start (EV_P_ ev_idle *w) |
4352 | ev_idle_start (EV_P_ ev_idle *w) EV_THROW |
2064 | { |
4353 | { |
2065 | if (expect_false (ev_is_active (w))) |
4354 | if (expect_false (ev_is_active (w))) |
2066 | return; |
4355 | return; |
2067 | |
4356 | |
2068 | pri_adjust (EV_A_ (W)w); |
4357 | pri_adjust (EV_A_ (W)w); |
|
|
4358 | |
|
|
4359 | EV_FREQUENT_CHECK; |
2069 | |
4360 | |
2070 | { |
4361 | { |
2071 | int active = ++idlecnt [ABSPRI (w)]; |
4362 | int active = ++idlecnt [ABSPRI (w)]; |
2072 | |
4363 | |
2073 | ++idleall; |
4364 | ++idleall; |
2074 | ev_start (EV_A_ (W)w, active); |
4365 | ev_start (EV_A_ (W)w, active); |
2075 | |
4366 | |
2076 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
4367 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
2077 | idles [ABSPRI (w)][active - 1] = w; |
4368 | idles [ABSPRI (w)][active - 1] = w; |
2078 | } |
4369 | } |
|
|
4370 | |
|
|
4371 | EV_FREQUENT_CHECK; |
2079 | } |
4372 | } |
2080 | |
4373 | |
2081 | void |
4374 | void |
2082 | ev_idle_stop (EV_P_ ev_idle *w) |
4375 | ev_idle_stop (EV_P_ ev_idle *w) EV_THROW |
2083 | { |
4376 | { |
2084 | clear_pending (EV_A_ (W)w); |
4377 | clear_pending (EV_A_ (W)w); |
2085 | if (expect_false (!ev_is_active (w))) |
4378 | if (expect_false (!ev_is_active (w))) |
2086 | return; |
4379 | return; |
2087 | |
4380 | |
|
|
4381 | EV_FREQUENT_CHECK; |
|
|
4382 | |
2088 | { |
4383 | { |
2089 | int active = ((W)w)->active; |
4384 | int active = ev_active (w); |
2090 | |
4385 | |
2091 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
4386 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
2092 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
4387 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
2093 | |
4388 | |
2094 | ev_stop (EV_A_ (W)w); |
4389 | ev_stop (EV_A_ (W)w); |
2095 | --idleall; |
4390 | --idleall; |
2096 | } |
4391 | } |
2097 | } |
|
|
2098 | #endif |
|
|
2099 | |
4392 | |
|
|
4393 | EV_FREQUENT_CHECK; |
|
|
4394 | } |
|
|
4395 | #endif |
|
|
4396 | |
|
|
4397 | #if EV_PREPARE_ENABLE |
2100 | void |
4398 | void |
2101 | ev_prepare_start (EV_P_ ev_prepare *w) |
4399 | ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW |
2102 | { |
4400 | { |
2103 | if (expect_false (ev_is_active (w))) |
4401 | if (expect_false (ev_is_active (w))) |
2104 | return; |
4402 | return; |
|
|
4403 | |
|
|
4404 | EV_FREQUENT_CHECK; |
2105 | |
4405 | |
2106 | ev_start (EV_A_ (W)w, ++preparecnt); |
4406 | ev_start (EV_A_ (W)w, ++preparecnt); |
2107 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
4407 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
2108 | prepares [preparecnt - 1] = w; |
4408 | prepares [preparecnt - 1] = w; |
|
|
4409 | |
|
|
4410 | EV_FREQUENT_CHECK; |
2109 | } |
4411 | } |
2110 | |
4412 | |
2111 | void |
4413 | void |
2112 | ev_prepare_stop (EV_P_ ev_prepare *w) |
4414 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW |
2113 | { |
4415 | { |
2114 | clear_pending (EV_A_ (W)w); |
4416 | clear_pending (EV_A_ (W)w); |
2115 | if (expect_false (!ev_is_active (w))) |
4417 | if (expect_false (!ev_is_active (w))) |
2116 | return; |
4418 | return; |
2117 | |
4419 | |
|
|
4420 | EV_FREQUENT_CHECK; |
|
|
4421 | |
2118 | { |
4422 | { |
2119 | int active = ((W)w)->active; |
4423 | int active = ev_active (w); |
|
|
4424 | |
2120 | prepares [active - 1] = prepares [--preparecnt]; |
4425 | prepares [active - 1] = prepares [--preparecnt]; |
2121 | ((W)prepares [active - 1])->active = active; |
4426 | ev_active (prepares [active - 1]) = active; |
2122 | } |
4427 | } |
2123 | |
4428 | |
2124 | ev_stop (EV_A_ (W)w); |
4429 | ev_stop (EV_A_ (W)w); |
2125 | } |
|
|
2126 | |
4430 | |
|
|
4431 | EV_FREQUENT_CHECK; |
|
|
4432 | } |
|
|
4433 | #endif |
|
|
4434 | |
|
|
4435 | #if EV_CHECK_ENABLE |
2127 | void |
4436 | void |
2128 | ev_check_start (EV_P_ ev_check *w) |
4437 | ev_check_start (EV_P_ ev_check *w) EV_THROW |
2129 | { |
4438 | { |
2130 | if (expect_false (ev_is_active (w))) |
4439 | if (expect_false (ev_is_active (w))) |
2131 | return; |
4440 | return; |
|
|
4441 | |
|
|
4442 | EV_FREQUENT_CHECK; |
2132 | |
4443 | |
2133 | ev_start (EV_A_ (W)w, ++checkcnt); |
4444 | ev_start (EV_A_ (W)w, ++checkcnt); |
2134 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
4445 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
2135 | checks [checkcnt - 1] = w; |
4446 | checks [checkcnt - 1] = w; |
|
|
4447 | |
|
|
4448 | EV_FREQUENT_CHECK; |
2136 | } |
4449 | } |
2137 | |
4450 | |
2138 | void |
4451 | void |
2139 | ev_check_stop (EV_P_ ev_check *w) |
4452 | ev_check_stop (EV_P_ ev_check *w) EV_THROW |
2140 | { |
4453 | { |
2141 | clear_pending (EV_A_ (W)w); |
4454 | clear_pending (EV_A_ (W)w); |
2142 | if (expect_false (!ev_is_active (w))) |
4455 | if (expect_false (!ev_is_active (w))) |
2143 | return; |
4456 | return; |
2144 | |
4457 | |
|
|
4458 | EV_FREQUENT_CHECK; |
|
|
4459 | |
2145 | { |
4460 | { |
2146 | int active = ((W)w)->active; |
4461 | int active = ev_active (w); |
|
|
4462 | |
2147 | checks [active - 1] = checks [--checkcnt]; |
4463 | checks [active - 1] = checks [--checkcnt]; |
2148 | ((W)checks [active - 1])->active = active; |
4464 | ev_active (checks [active - 1]) = active; |
2149 | } |
4465 | } |
2150 | |
4466 | |
2151 | ev_stop (EV_A_ (W)w); |
4467 | ev_stop (EV_A_ (W)w); |
|
|
4468 | |
|
|
4469 | EV_FREQUENT_CHECK; |
2152 | } |
4470 | } |
|
|
4471 | #endif |
2153 | |
4472 | |
2154 | #if EV_EMBED_ENABLE |
4473 | #if EV_EMBED_ENABLE |
2155 | void noinline |
4474 | void noinline |
2156 | ev_embed_sweep (EV_P_ ev_embed *w) |
4475 | ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW |
2157 | { |
4476 | { |
2158 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
4477 | ev_run (w->other, EVRUN_NOWAIT); |
2159 | } |
4478 | } |
2160 | |
4479 | |
2161 | static void |
4480 | static void |
2162 | embed_cb (EV_P_ ev_io *io, int revents) |
4481 | embed_io_cb (EV_P_ ev_io *io, int revents) |
2163 | { |
4482 | { |
2164 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
4483 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2165 | |
4484 | |
2166 | if (ev_cb (w)) |
4485 | if (ev_cb (w)) |
2167 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
4486 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2168 | else |
4487 | else |
2169 | ev_embed_sweep (loop, w); |
4488 | ev_run (w->other, EVRUN_NOWAIT); |
2170 | } |
4489 | } |
|
|
4490 | |
|
|
4491 | static void |
|
|
4492 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
4493 | { |
|
|
4494 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
4495 | |
|
|
4496 | { |
|
|
4497 | EV_P = w->other; |
|
|
4498 | |
|
|
4499 | while (fdchangecnt) |
|
|
4500 | { |
|
|
4501 | fd_reify (EV_A); |
|
|
4502 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4503 | } |
|
|
4504 | } |
|
|
4505 | } |
|
|
4506 | |
|
|
4507 | static void |
|
|
4508 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
4509 | { |
|
|
4510 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
4511 | |
|
|
4512 | ev_embed_stop (EV_A_ w); |
|
|
4513 | |
|
|
4514 | { |
|
|
4515 | EV_P = w->other; |
|
|
4516 | |
|
|
4517 | ev_loop_fork (EV_A); |
|
|
4518 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4519 | } |
|
|
4520 | |
|
|
4521 | ev_embed_start (EV_A_ w); |
|
|
4522 | } |
|
|
4523 | |
|
|
4524 | #if 0 |
|
|
4525 | static void |
|
|
4526 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
4527 | { |
|
|
4528 | ev_idle_stop (EV_A_ idle); |
|
|
4529 | } |
|
|
4530 | #endif |
2171 | |
4531 | |
2172 | void |
4532 | void |
2173 | ev_embed_start (EV_P_ ev_embed *w) |
4533 | ev_embed_start (EV_P_ ev_embed *w) EV_THROW |
2174 | { |
4534 | { |
2175 | if (expect_false (ev_is_active (w))) |
4535 | if (expect_false (ev_is_active (w))) |
2176 | return; |
4536 | return; |
2177 | |
4537 | |
2178 | { |
4538 | { |
2179 | struct ev_loop *loop = w->loop; |
4539 | EV_P = w->other; |
2180 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
4540 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2181 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
4541 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2182 | } |
4542 | } |
|
|
4543 | |
|
|
4544 | EV_FREQUENT_CHECK; |
2183 | |
4545 | |
2184 | ev_set_priority (&w->io, ev_priority (w)); |
4546 | ev_set_priority (&w->io, ev_priority (w)); |
2185 | ev_io_start (EV_A_ &w->io); |
4547 | ev_io_start (EV_A_ &w->io); |
2186 | |
4548 | |
|
|
4549 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
4550 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
4551 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
4552 | |
|
|
4553 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
4554 | ev_fork_start (EV_A_ &w->fork); |
|
|
4555 | |
|
|
4556 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
4557 | |
2187 | ev_start (EV_A_ (W)w, 1); |
4558 | ev_start (EV_A_ (W)w, 1); |
|
|
4559 | |
|
|
4560 | EV_FREQUENT_CHECK; |
2188 | } |
4561 | } |
2189 | |
4562 | |
2190 | void |
4563 | void |
2191 | ev_embed_stop (EV_P_ ev_embed *w) |
4564 | ev_embed_stop (EV_P_ ev_embed *w) EV_THROW |
2192 | { |
4565 | { |
2193 | clear_pending (EV_A_ (W)w); |
4566 | clear_pending (EV_A_ (W)w); |
2194 | if (expect_false (!ev_is_active (w))) |
4567 | if (expect_false (!ev_is_active (w))) |
2195 | return; |
4568 | return; |
2196 | |
4569 | |
|
|
4570 | EV_FREQUENT_CHECK; |
|
|
4571 | |
2197 | ev_io_stop (EV_A_ &w->io); |
4572 | ev_io_stop (EV_A_ &w->io); |
|
|
4573 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
4574 | ev_fork_stop (EV_A_ &w->fork); |
2198 | |
4575 | |
2199 | ev_stop (EV_A_ (W)w); |
4576 | ev_stop (EV_A_ (W)w); |
|
|
4577 | |
|
|
4578 | EV_FREQUENT_CHECK; |
2200 | } |
4579 | } |
2201 | #endif |
4580 | #endif |
2202 | |
4581 | |
2203 | #if EV_FORK_ENABLE |
4582 | #if EV_FORK_ENABLE |
2204 | void |
4583 | void |
2205 | ev_fork_start (EV_P_ ev_fork *w) |
4584 | ev_fork_start (EV_P_ ev_fork *w) EV_THROW |
2206 | { |
4585 | { |
2207 | if (expect_false (ev_is_active (w))) |
4586 | if (expect_false (ev_is_active (w))) |
2208 | return; |
4587 | return; |
|
|
4588 | |
|
|
4589 | EV_FREQUENT_CHECK; |
2209 | |
4590 | |
2210 | ev_start (EV_A_ (W)w, ++forkcnt); |
4591 | ev_start (EV_A_ (W)w, ++forkcnt); |
2211 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
4592 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
2212 | forks [forkcnt - 1] = w; |
4593 | forks [forkcnt - 1] = w; |
|
|
4594 | |
|
|
4595 | EV_FREQUENT_CHECK; |
2213 | } |
4596 | } |
2214 | |
4597 | |
2215 | void |
4598 | void |
2216 | ev_fork_stop (EV_P_ ev_fork *w) |
4599 | ev_fork_stop (EV_P_ ev_fork *w) EV_THROW |
2217 | { |
4600 | { |
2218 | clear_pending (EV_A_ (W)w); |
4601 | clear_pending (EV_A_ (W)w); |
2219 | if (expect_false (!ev_is_active (w))) |
4602 | if (expect_false (!ev_is_active (w))) |
2220 | return; |
4603 | return; |
2221 | |
4604 | |
|
|
4605 | EV_FREQUENT_CHECK; |
|
|
4606 | |
2222 | { |
4607 | { |
2223 | int active = ((W)w)->active; |
4608 | int active = ev_active (w); |
|
|
4609 | |
2224 | forks [active - 1] = forks [--forkcnt]; |
4610 | forks [active - 1] = forks [--forkcnt]; |
2225 | ((W)forks [active - 1])->active = active; |
4611 | ev_active (forks [active - 1]) = active; |
2226 | } |
4612 | } |
2227 | |
4613 | |
2228 | ev_stop (EV_A_ (W)w); |
4614 | ev_stop (EV_A_ (W)w); |
|
|
4615 | |
|
|
4616 | EV_FREQUENT_CHECK; |
|
|
4617 | } |
|
|
4618 | #endif |
|
|
4619 | |
|
|
4620 | #if EV_CLEANUP_ENABLE |
|
|
4621 | void |
|
|
4622 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4623 | { |
|
|
4624 | if (expect_false (ev_is_active (w))) |
|
|
4625 | return; |
|
|
4626 | |
|
|
4627 | EV_FREQUENT_CHECK; |
|
|
4628 | |
|
|
4629 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
4630 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
4631 | cleanups [cleanupcnt - 1] = w; |
|
|
4632 | |
|
|
4633 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4634 | ev_unref (EV_A); |
|
|
4635 | EV_FREQUENT_CHECK; |
|
|
4636 | } |
|
|
4637 | |
|
|
4638 | void |
|
|
4639 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4640 | { |
|
|
4641 | clear_pending (EV_A_ (W)w); |
|
|
4642 | if (expect_false (!ev_is_active (w))) |
|
|
4643 | return; |
|
|
4644 | |
|
|
4645 | EV_FREQUENT_CHECK; |
|
|
4646 | ev_ref (EV_A); |
|
|
4647 | |
|
|
4648 | { |
|
|
4649 | int active = ev_active (w); |
|
|
4650 | |
|
|
4651 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4652 | ev_active (cleanups [active - 1]) = active; |
|
|
4653 | } |
|
|
4654 | |
|
|
4655 | ev_stop (EV_A_ (W)w); |
|
|
4656 | |
|
|
4657 | EV_FREQUENT_CHECK; |
|
|
4658 | } |
|
|
4659 | #endif |
|
|
4660 | |
|
|
4661 | #if EV_ASYNC_ENABLE |
|
|
4662 | void |
|
|
4663 | ev_async_start (EV_P_ ev_async *w) EV_THROW |
|
|
4664 | { |
|
|
4665 | if (expect_false (ev_is_active (w))) |
|
|
4666 | return; |
|
|
4667 | |
|
|
4668 | w->sent = 0; |
|
|
4669 | |
|
|
4670 | evpipe_init (EV_A); |
|
|
4671 | |
|
|
4672 | EV_FREQUENT_CHECK; |
|
|
4673 | |
|
|
4674 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4675 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
4676 | asyncs [asynccnt - 1] = w; |
|
|
4677 | |
|
|
4678 | EV_FREQUENT_CHECK; |
|
|
4679 | } |
|
|
4680 | |
|
|
4681 | void |
|
|
4682 | ev_async_stop (EV_P_ ev_async *w) EV_THROW |
|
|
4683 | { |
|
|
4684 | clear_pending (EV_A_ (W)w); |
|
|
4685 | if (expect_false (!ev_is_active (w))) |
|
|
4686 | return; |
|
|
4687 | |
|
|
4688 | EV_FREQUENT_CHECK; |
|
|
4689 | |
|
|
4690 | { |
|
|
4691 | int active = ev_active (w); |
|
|
4692 | |
|
|
4693 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
4694 | ev_active (asyncs [active - 1]) = active; |
|
|
4695 | } |
|
|
4696 | |
|
|
4697 | ev_stop (EV_A_ (W)w); |
|
|
4698 | |
|
|
4699 | EV_FREQUENT_CHECK; |
|
|
4700 | } |
|
|
4701 | |
|
|
4702 | void |
|
|
4703 | ev_async_send (EV_P_ ev_async *w) EV_THROW |
|
|
4704 | { |
|
|
4705 | w->sent = 1; |
|
|
4706 | evpipe_write (EV_A_ &async_pending); |
2229 | } |
4707 | } |
2230 | #endif |
4708 | #endif |
2231 | |
4709 | |
2232 | /*****************************************************************************/ |
4710 | /*****************************************************************************/ |
2233 | |
4711 | |
… | |
… | |
2243 | once_cb (EV_P_ struct ev_once *once, int revents) |
4721 | once_cb (EV_P_ struct ev_once *once, int revents) |
2244 | { |
4722 | { |
2245 | void (*cb)(int revents, void *arg) = once->cb; |
4723 | void (*cb)(int revents, void *arg) = once->cb; |
2246 | void *arg = once->arg; |
4724 | void *arg = once->arg; |
2247 | |
4725 | |
2248 | ev_io_stop (EV_A_ &once->io); |
4726 | ev_io_stop (EV_A_ &once->io); |
2249 | ev_timer_stop (EV_A_ &once->to); |
4727 | ev_timer_stop (EV_A_ &once->to); |
2250 | ev_free (once); |
4728 | ev_free (once); |
2251 | |
4729 | |
2252 | cb (revents, arg); |
4730 | cb (revents, arg); |
2253 | } |
4731 | } |
2254 | |
4732 | |
2255 | static void |
4733 | static void |
2256 | once_cb_io (EV_P_ ev_io *w, int revents) |
4734 | once_cb_io (EV_P_ ev_io *w, int revents) |
2257 | { |
4735 | { |
2258 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
4736 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
4737 | |
|
|
4738 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
2259 | } |
4739 | } |
2260 | |
4740 | |
2261 | static void |
4741 | static void |
2262 | once_cb_to (EV_P_ ev_timer *w, int revents) |
4742 | once_cb_to (EV_P_ ev_timer *w, int revents) |
2263 | { |
4743 | { |
2264 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
4744 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
4745 | |
|
|
4746 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
2265 | } |
4747 | } |
2266 | |
4748 | |
2267 | void |
4749 | void |
2268 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
4750 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW |
2269 | { |
4751 | { |
2270 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
4752 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
2271 | |
4753 | |
2272 | if (expect_false (!once)) |
4754 | if (expect_false (!once)) |
2273 | { |
4755 | { |
2274 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
4756 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
2275 | return; |
4757 | return; |
2276 | } |
4758 | } |
2277 | |
4759 | |
2278 | once->cb = cb; |
4760 | once->cb = cb; |
2279 | once->arg = arg; |
4761 | once->arg = arg; |
… | |
… | |
2291 | ev_timer_set (&once->to, timeout, 0.); |
4773 | ev_timer_set (&once->to, timeout, 0.); |
2292 | ev_timer_start (EV_A_ &once->to); |
4774 | ev_timer_start (EV_A_ &once->to); |
2293 | } |
4775 | } |
2294 | } |
4776 | } |
2295 | |
4777 | |
2296 | #ifdef __cplusplus |
4778 | /*****************************************************************************/ |
2297 | } |
4779 | |
|
|
4780 | #if EV_WALK_ENABLE |
|
|
4781 | void ecb_cold |
|
|
4782 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW |
|
|
4783 | { |
|
|
4784 | int i, j; |
|
|
4785 | ev_watcher_list *wl, *wn; |
|
|
4786 | |
|
|
4787 | if (types & (EV_IO | EV_EMBED)) |
|
|
4788 | for (i = 0; i < anfdmax; ++i) |
|
|
4789 | for (wl = anfds [i].head; wl; ) |
|
|
4790 | { |
|
|
4791 | wn = wl->next; |
|
|
4792 | |
|
|
4793 | #if EV_EMBED_ENABLE |
|
|
4794 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
4795 | { |
|
|
4796 | if (types & EV_EMBED) |
|
|
4797 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
4798 | } |
|
|
4799 | else |
|
|
4800 | #endif |
|
|
4801 | #if EV_USE_INOTIFY |
|
|
4802 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
4803 | ; |
|
|
4804 | else |
|
|
4805 | #endif |
|
|
4806 | if ((ev_io *)wl != &pipe_w) |
|
|
4807 | if (types & EV_IO) |
|
|
4808 | cb (EV_A_ EV_IO, wl); |
|
|
4809 | |
|
|
4810 | wl = wn; |
|
|
4811 | } |
|
|
4812 | |
|
|
4813 | if (types & (EV_TIMER | EV_STAT)) |
|
|
4814 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
4815 | #if EV_STAT_ENABLE |
|
|
4816 | /*TODO: timer is not always active*/ |
|
|
4817 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
|
|
4818 | { |
|
|
4819 | if (types & EV_STAT) |
|
|
4820 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
|
|
4821 | } |
|
|
4822 | else |
|
|
4823 | #endif |
|
|
4824 | if (types & EV_TIMER) |
|
|
4825 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
|
|
4826 | |
|
|
4827 | #if EV_PERIODIC_ENABLE |
|
|
4828 | if (types & EV_PERIODIC) |
|
|
4829 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
4830 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
4831 | #endif |
|
|
4832 | |
|
|
4833 | #if EV_IDLE_ENABLE |
|
|
4834 | if (types & EV_IDLE) |
|
|
4835 | for (j = NUMPRI; j--; ) |
|
|
4836 | for (i = idlecnt [j]; i--; ) |
|
|
4837 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
4838 | #endif |
|
|
4839 | |
|
|
4840 | #if EV_FORK_ENABLE |
|
|
4841 | if (types & EV_FORK) |
|
|
4842 | for (i = forkcnt; i--; ) |
|
|
4843 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
4844 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
4845 | #endif |
|
|
4846 | |
|
|
4847 | #if EV_ASYNC_ENABLE |
|
|
4848 | if (types & EV_ASYNC) |
|
|
4849 | for (i = asynccnt; i--; ) |
|
|
4850 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
4851 | #endif |
|
|
4852 | |
|
|
4853 | #if EV_PREPARE_ENABLE |
|
|
4854 | if (types & EV_PREPARE) |
|
|
4855 | for (i = preparecnt; i--; ) |
|
|
4856 | # if EV_EMBED_ENABLE |
|
|
4857 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
2298 | #endif |
4858 | # endif |
|
|
4859 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
4860 | #endif |
2299 | |
4861 | |
|
|
4862 | #if EV_CHECK_ENABLE |
|
|
4863 | if (types & EV_CHECK) |
|
|
4864 | for (i = checkcnt; i--; ) |
|
|
4865 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
4866 | #endif |
|
|
4867 | |
|
|
4868 | #if EV_SIGNAL_ENABLE |
|
|
4869 | if (types & EV_SIGNAL) |
|
|
4870 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
4871 | for (wl = signals [i].head; wl; ) |
|
|
4872 | { |
|
|
4873 | wn = wl->next; |
|
|
4874 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
4875 | wl = wn; |
|
|
4876 | } |
|
|
4877 | #endif |
|
|
4878 | |
|
|
4879 | #if EV_CHILD_ENABLE |
|
|
4880 | if (types & EV_CHILD) |
|
|
4881 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
4882 | for (wl = childs [i]; wl; ) |
|
|
4883 | { |
|
|
4884 | wn = wl->next; |
|
|
4885 | cb (EV_A_ EV_CHILD, wl); |
|
|
4886 | wl = wn; |
|
|
4887 | } |
|
|
4888 | #endif |
|
|
4889 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
4890 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
4891 | } |
|
|
4892 | #endif |
|
|
4893 | |
|
|
4894 | #if EV_MULTIPLICITY |
|
|
4895 | #include "ev_wrap.h" |
|
|
4896 | #endif |
|
|
4897 | |