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 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: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | #ifdef __cplusplus |
33 | extern "C" { |
41 | extern "C" { |
34 | #endif |
42 | #endif |
35 | |
43 | |
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44 | /* this big block deduces configuration from config.h */ |
36 | #ifndef EV_STANDALONE |
45 | #ifndef EV_STANDALONE |
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46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
37 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
38 | |
51 | |
39 | # if HAVE_CLOCK_GETTIME |
52 | # if HAVE_CLOCK_GETTIME |
40 | # ifndef EV_USE_MONOTONIC |
53 | # ifndef EV_USE_MONOTONIC |
41 | # define EV_USE_MONOTONIC 1 |
54 | # define EV_USE_MONOTONIC 1 |
42 | # endif |
55 | # endif |
43 | # ifndef EV_USE_REALTIME |
56 | # ifndef EV_USE_REALTIME |
44 | # define EV_USE_REALTIME 1 |
57 | # define EV_USE_REALTIME 1 |
45 | # endif |
58 | # endif |
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59 | # else |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 0 |
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62 | # endif |
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63 | # ifndef EV_USE_REALTIME |
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64 | # define EV_USE_REALTIME 0 |
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65 | # endif |
46 | # endif |
66 | # endif |
47 | |
67 | |
48 | # if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) |
68 | # ifndef EV_USE_NANOSLEEP |
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|
69 | # if HAVE_NANOSLEEP |
49 | # define EV_USE_SELECT 1 |
70 | # define EV_USE_NANOSLEEP 1 |
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71 | # else |
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72 | # define EV_USE_NANOSLEEP 0 |
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73 | # endif |
50 | # endif |
74 | # endif |
51 | |
75 | |
52 | # if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) |
76 | # ifndef EV_USE_SELECT |
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77 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
53 | # define EV_USE_POLL 1 |
78 | # define EV_USE_SELECT 1 |
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79 | # else |
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80 | # define EV_USE_SELECT 0 |
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81 | # endif |
54 | # endif |
82 | # endif |
55 | |
83 | |
56 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) |
84 | # ifndef EV_USE_POLL |
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85 | # if HAVE_POLL && HAVE_POLL_H |
57 | # define EV_USE_EPOLL 1 |
86 | # define EV_USE_POLL 1 |
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87 | # else |
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88 | # define EV_USE_POLL 0 |
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89 | # endif |
58 | # endif |
90 | # endif |
59 | |
91 | |
60 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) |
92 | # ifndef EV_USE_EPOLL |
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93 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
61 | # define EV_USE_KQUEUE 1 |
94 | # define EV_USE_EPOLL 1 |
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95 | # else |
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96 | # define EV_USE_EPOLL 0 |
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97 | # endif |
62 | # endif |
98 | # endif |
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99 | |
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100 | # ifndef EV_USE_KQUEUE |
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101 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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102 | # define EV_USE_KQUEUE 1 |
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103 | # else |
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104 | # define EV_USE_KQUEUE 0 |
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105 | # endif |
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106 | # endif |
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107 | |
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108 | # ifndef EV_USE_PORT |
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109 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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110 | # define EV_USE_PORT 1 |
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111 | # else |
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112 | # define EV_USE_PORT 0 |
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113 | # endif |
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114 | # endif |
63 | |
115 | |
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116 | # ifndef EV_USE_INOTIFY |
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117 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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118 | # define EV_USE_INOTIFY 1 |
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119 | # else |
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120 | # define EV_USE_INOTIFY 0 |
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121 | # endif |
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122 | # endif |
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123 | |
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124 | # ifndef EV_USE_EVENTFD |
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125 | # if HAVE_EVENTFD |
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126 | # define EV_USE_EVENTFD 1 |
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127 | # else |
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128 | # define EV_USE_EVENTFD 0 |
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129 | # endif |
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130 | # endif |
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131 | |
64 | #endif |
132 | #endif |
65 | |
133 | |
66 | #include <math.h> |
134 | #include <math.h> |
67 | #include <stdlib.h> |
135 | #include <stdlib.h> |
68 | #include <fcntl.h> |
136 | #include <fcntl.h> |
… | |
… | |
75 | #include <sys/types.h> |
143 | #include <sys/types.h> |
76 | #include <time.h> |
144 | #include <time.h> |
77 | |
145 | |
78 | #include <signal.h> |
146 | #include <signal.h> |
79 | |
147 | |
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148 | #ifdef EV_H |
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149 | # include EV_H |
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150 | #else |
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151 | # include "ev.h" |
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152 | #endif |
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153 | |
80 | #ifndef _WIN32 |
154 | #ifndef _WIN32 |
81 | # include <unistd.h> |
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82 | # include <sys/time.h> |
155 | # include <sys/time.h> |
83 | # include <sys/wait.h> |
156 | # include <sys/wait.h> |
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157 | # include <unistd.h> |
84 | #else |
158 | #else |
85 | # define WIN32_LEAN_AND_MEAN |
159 | # define WIN32_LEAN_AND_MEAN |
86 | # include <windows.h> |
160 | # include <windows.h> |
87 | # ifndef EV_SELECT_IS_WINSOCKET |
161 | # ifndef EV_SELECT_IS_WINSOCKET |
88 | # define EV_SELECT_IS_WINSOCKET 1 |
162 | # define EV_SELECT_IS_WINSOCKET 1 |
89 | # endif |
163 | # endif |
90 | #endif |
164 | #endif |
91 | |
165 | |
92 | /**/ |
166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
93 | |
167 | |
94 | #ifndef EV_USE_MONOTONIC |
168 | #ifndef EV_USE_MONOTONIC |
95 | # define EV_USE_MONOTONIC 1 |
169 | # define EV_USE_MONOTONIC 0 |
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170 | #endif |
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171 | |
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172 | #ifndef EV_USE_REALTIME |
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173 | # define EV_USE_REALTIME 0 |
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174 | #endif |
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175 | |
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176 | #ifndef EV_USE_NANOSLEEP |
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177 | # define EV_USE_NANOSLEEP 0 |
96 | #endif |
178 | #endif |
97 | |
179 | |
98 | #ifndef EV_USE_SELECT |
180 | #ifndef EV_USE_SELECT |
99 | # define EV_USE_SELECT 1 |
181 | # define EV_USE_SELECT 1 |
100 | # define EV_SELECT_USE_FD_SET 1 |
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101 | #endif |
182 | #endif |
102 | |
183 | |
103 | #ifndef EV_USE_POLL |
184 | #ifndef EV_USE_POLL |
104 | # ifdef _WIN32 |
185 | # ifdef _WIN32 |
105 | # define EV_USE_POLL 0 |
186 | # define EV_USE_POLL 0 |
… | |
… | |
107 | # define EV_USE_POLL 1 |
188 | # define EV_USE_POLL 1 |
108 | # endif |
189 | # endif |
109 | #endif |
190 | #endif |
110 | |
191 | |
111 | #ifndef EV_USE_EPOLL |
192 | #ifndef EV_USE_EPOLL |
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193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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194 | # define EV_USE_EPOLL 1 |
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195 | # else |
112 | # define EV_USE_EPOLL 0 |
196 | # define EV_USE_EPOLL 0 |
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197 | # endif |
113 | #endif |
198 | #endif |
114 | |
199 | |
115 | #ifndef EV_USE_KQUEUE |
200 | #ifndef EV_USE_KQUEUE |
116 | # define EV_USE_KQUEUE 0 |
201 | # define EV_USE_KQUEUE 0 |
117 | #endif |
202 | #endif |
118 | |
203 | |
119 | #ifndef EV_USE_REALTIME |
204 | #ifndef EV_USE_PORT |
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205 | # define EV_USE_PORT 0 |
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206 | #endif |
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207 | |
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208 | #ifndef EV_USE_INOTIFY |
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209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
120 | # define EV_USE_REALTIME 1 |
210 | # define EV_USE_INOTIFY 1 |
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211 | # else |
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212 | # define EV_USE_INOTIFY 0 |
121 | #endif |
213 | # endif |
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214 | #endif |
122 | |
215 | |
123 | /**/ |
216 | #ifndef EV_PID_HASHSIZE |
124 | |
217 | # if EV_MINIMAL |
125 | /* darwin simply cannot be helped */ |
218 | # define EV_PID_HASHSIZE 1 |
126 | #ifdef __APPLE__ |
219 | # else |
127 | # undef EV_USE_POLL |
220 | # define EV_PID_HASHSIZE 16 |
128 | # undef EV_USE_KQUEUE |
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129 | #endif |
221 | # endif |
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222 | #endif |
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223 | |
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224 | #ifndef EV_INOTIFY_HASHSIZE |
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225 | # if EV_MINIMAL |
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226 | # define EV_INOTIFY_HASHSIZE 1 |
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227 | # else |
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228 | # define EV_INOTIFY_HASHSIZE 16 |
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229 | # endif |
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230 | #endif |
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231 | |
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232 | #ifndef EV_USE_EVENTFD |
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233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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234 | # define EV_USE_EVENTFD 1 |
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235 | # else |
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236 | # define EV_USE_EVENTFD 0 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
130 | |
241 | |
131 | #ifndef CLOCK_MONOTONIC |
242 | #ifndef CLOCK_MONOTONIC |
132 | # undef EV_USE_MONOTONIC |
243 | # undef EV_USE_MONOTONIC |
133 | # define EV_USE_MONOTONIC 0 |
244 | # define EV_USE_MONOTONIC 0 |
134 | #endif |
245 | #endif |
… | |
… | |
136 | #ifndef CLOCK_REALTIME |
247 | #ifndef CLOCK_REALTIME |
137 | # undef EV_USE_REALTIME |
248 | # undef EV_USE_REALTIME |
138 | # define EV_USE_REALTIME 0 |
249 | # define EV_USE_REALTIME 0 |
139 | #endif |
250 | #endif |
140 | |
251 | |
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252 | #if !EV_STAT_ENABLE |
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253 | # undef EV_USE_INOTIFY |
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254 | # define EV_USE_INOTIFY 0 |
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255 | #endif |
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256 | |
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257 | #if !EV_USE_NANOSLEEP |
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258 | # ifndef _WIN32 |
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259 | # include <sys/select.h> |
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260 | # endif |
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261 | #endif |
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262 | |
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263 | #if EV_USE_INOTIFY |
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264 | # include <sys/inotify.h> |
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265 | #endif |
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266 | |
141 | #if EV_SELECT_IS_WINSOCKET |
267 | #if EV_SELECT_IS_WINSOCKET |
142 | # include <winsock.h> |
268 | # include <winsock.h> |
143 | #endif |
269 | #endif |
144 | |
270 | |
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271 | #if EV_USE_EVENTFD |
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272 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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273 | # include <stdint.h> |
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274 | # ifdef __cplusplus |
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275 | extern "C" { |
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276 | # endif |
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277 | int eventfd (unsigned int initval, int flags); |
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278 | # ifdef __cplusplus |
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279 | } |
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280 | # endif |
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281 | #endif |
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282 | |
145 | /**/ |
283 | /**/ |
146 | |
284 | |
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285 | /* |
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286 | * This is used to avoid floating point rounding problems. |
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287 | * It is added to ev_rt_now when scheduling periodics |
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288 | * to ensure progress, time-wise, even when rounding |
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289 | * errors are against us. |
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290 | * This value is good at least till the year 4000. |
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291 | * Better solutions welcome. |
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292 | */ |
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293 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
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294 | |
147 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
295 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
148 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
296 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
149 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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150 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
297 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
151 | |
298 | |
152 | #ifdef EV_H |
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153 | # include EV_H |
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154 | #else |
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155 | # include "ev.h" |
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156 | #endif |
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157 | |
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158 | #if __GNUC__ >= 3 |
299 | #if __GNUC__ >= 4 |
159 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
300 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
160 | # define inline inline |
301 | # define noinline __attribute__ ((noinline)) |
161 | #else |
302 | #else |
162 | # define expect(expr,value) (expr) |
303 | # define expect(expr,value) (expr) |
163 | # define inline static |
304 | # define noinline |
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305 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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306 | # define inline |
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307 | # endif |
164 | #endif |
308 | #endif |
165 | |
309 | |
166 | #define expect_false(expr) expect ((expr) != 0, 0) |
310 | #define expect_false(expr) expect ((expr) != 0, 0) |
167 | #define expect_true(expr) expect ((expr) != 0, 1) |
311 | #define expect_true(expr) expect ((expr) != 0, 1) |
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312 | #define inline_size static inline |
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313 | |
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314 | #if EV_MINIMAL |
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315 | # define inline_speed static noinline |
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316 | #else |
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317 | # define inline_speed static inline |
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318 | #endif |
168 | |
319 | |
169 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
320 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
170 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
321 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
171 | |
322 | |
172 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
323 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
173 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
324 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
174 | |
325 | |
175 | typedef struct ev_watcher *W; |
326 | typedef ev_watcher *W; |
176 | typedef struct ev_watcher_list *WL; |
327 | typedef ev_watcher_list *WL; |
177 | typedef struct ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
178 | |
329 | |
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330 | #define ev_active(w) ((W)(w))->active |
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331 | #define ev_at(w) ((WT)(w))->at |
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332 | |
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333 | #if EV_USE_MONOTONIC |
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334 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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335 | /* giving it a reasonably high chance of working on typical architetcures */ |
179 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
336 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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337 | #endif |
180 | |
338 | |
181 | #ifdef _WIN32 |
339 | #ifdef _WIN32 |
182 | # include "ev_win32.c" |
340 | # include "ev_win32.c" |
183 | #endif |
341 | #endif |
184 | |
342 | |
185 | /*****************************************************************************/ |
343 | /*****************************************************************************/ |
186 | |
344 | |
187 | static void (*syserr_cb)(const char *msg); |
345 | static void (*syserr_cb)(const char *msg); |
188 | |
346 | |
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347 | void |
189 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
348 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
190 | { |
349 | { |
191 | syserr_cb = cb; |
350 | syserr_cb = cb; |
192 | } |
351 | } |
193 | |
352 | |
194 | static void |
353 | static void noinline |
195 | syserr (const char *msg) |
354 | syserr (const char *msg) |
196 | { |
355 | { |
197 | if (!msg) |
356 | if (!msg) |
198 | msg = "(libev) system error"; |
357 | msg = "(libev) system error"; |
199 | |
358 | |
… | |
… | |
204 | perror (msg); |
363 | perror (msg); |
205 | abort (); |
364 | abort (); |
206 | } |
365 | } |
207 | } |
366 | } |
208 | |
367 | |
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368 | static void * |
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369 | ev_realloc_emul (void *ptr, long size) |
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370 | { |
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371 | /* some systems, notably openbsd and darwin, fail to properly |
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372 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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373 | * the single unix specification, so work around them here. |
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374 | */ |
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375 | |
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376 | if (size) |
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377 | return realloc (ptr, size); |
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378 | |
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379 | free (ptr); |
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380 | return 0; |
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381 | } |
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382 | |
209 | static void *(*alloc)(void *ptr, long size); |
383 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
210 | |
384 | |
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385 | void |
211 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
386 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
212 | { |
387 | { |
213 | alloc = cb; |
388 | alloc = cb; |
214 | } |
389 | } |
215 | |
390 | |
216 | static void * |
391 | inline_speed void * |
217 | ev_realloc (void *ptr, long size) |
392 | ev_realloc (void *ptr, long size) |
218 | { |
393 | { |
219 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
394 | ptr = alloc (ptr, size); |
220 | |
395 | |
221 | if (!ptr && size) |
396 | if (!ptr && size) |
222 | { |
397 | { |
223 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
398 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
224 | abort (); |
399 | abort (); |
… | |
… | |
245 | typedef struct |
420 | typedef struct |
246 | { |
421 | { |
247 | W w; |
422 | W w; |
248 | int events; |
423 | int events; |
249 | } ANPENDING; |
424 | } ANPENDING; |
|
|
425 | |
|
|
426 | #if EV_USE_INOTIFY |
|
|
427 | /* hash table entry per inotify-id */ |
|
|
428 | typedef struct |
|
|
429 | { |
|
|
430 | WL head; |
|
|
431 | } ANFS; |
|
|
432 | #endif |
|
|
433 | |
|
|
434 | /* Heap Entry */ |
|
|
435 | #if EV_HEAP_CACHE_AT |
|
|
436 | typedef struct { |
|
|
437 | WT w; |
|
|
438 | ev_tstamp at; |
|
|
439 | } ANHE; |
|
|
440 | |
|
|
441 | #define ANHE_w(he) (he) /* access watcher, read-write */ |
|
|
442 | #define ANHE_at(he) (he)->at /* acces cahced at, read-only */ |
|
|
443 | #define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */ |
|
|
444 | #else |
|
|
445 | typedef WT ANHE; |
|
|
446 | |
|
|
447 | #define ANHE_w(he) (he) |
|
|
448 | #define ANHE_at(he) (he)->at |
|
|
449 | #define ANHE_at_set(he) |
|
|
450 | #endif |
250 | |
451 | |
251 | #if EV_MULTIPLICITY |
452 | #if EV_MULTIPLICITY |
252 | |
453 | |
253 | struct ev_loop |
454 | struct ev_loop |
254 | { |
455 | { |
… | |
… | |
288 | gettimeofday (&tv, 0); |
489 | gettimeofday (&tv, 0); |
289 | return tv.tv_sec + tv.tv_usec * 1e-6; |
490 | return tv.tv_sec + tv.tv_usec * 1e-6; |
290 | #endif |
491 | #endif |
291 | } |
492 | } |
292 | |
493 | |
293 | inline ev_tstamp |
494 | ev_tstamp inline_size |
294 | get_clock (void) |
495 | get_clock (void) |
295 | { |
496 | { |
296 | #if EV_USE_MONOTONIC |
497 | #if EV_USE_MONOTONIC |
297 | if (expect_true (have_monotonic)) |
498 | if (expect_true (have_monotonic)) |
298 | { |
499 | { |
… | |
… | |
311 | { |
512 | { |
312 | return ev_rt_now; |
513 | return ev_rt_now; |
313 | } |
514 | } |
314 | #endif |
515 | #endif |
315 | |
516 | |
316 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
517 | void |
|
|
518 | ev_sleep (ev_tstamp delay) |
|
|
519 | { |
|
|
520 | if (delay > 0.) |
|
|
521 | { |
|
|
522 | #if EV_USE_NANOSLEEP |
|
|
523 | struct timespec ts; |
|
|
524 | |
|
|
525 | ts.tv_sec = (time_t)delay; |
|
|
526 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
527 | |
|
|
528 | nanosleep (&ts, 0); |
|
|
529 | #elif defined(_WIN32) |
|
|
530 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
531 | #else |
|
|
532 | struct timeval tv; |
|
|
533 | |
|
|
534 | tv.tv_sec = (time_t)delay; |
|
|
535 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
536 | |
|
|
537 | select (0, 0, 0, 0, &tv); |
|
|
538 | #endif |
|
|
539 | } |
|
|
540 | } |
|
|
541 | |
|
|
542 | /*****************************************************************************/ |
|
|
543 | |
|
|
544 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
545 | |
|
|
546 | int inline_size |
|
|
547 | array_nextsize (int elem, int cur, int cnt) |
|
|
548 | { |
|
|
549 | int ncur = cur + 1; |
|
|
550 | |
|
|
551 | do |
|
|
552 | ncur <<= 1; |
|
|
553 | while (cnt > ncur); |
|
|
554 | |
|
|
555 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
556 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
557 | { |
|
|
558 | ncur *= elem; |
|
|
559 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
560 | ncur = ncur - sizeof (void *) * 4; |
|
|
561 | ncur /= elem; |
|
|
562 | } |
|
|
563 | |
|
|
564 | return ncur; |
|
|
565 | } |
|
|
566 | |
|
|
567 | static noinline void * |
|
|
568 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
569 | { |
|
|
570 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
571 | return ev_realloc (base, elem * *cur); |
|
|
572 | } |
317 | |
573 | |
318 | #define array_needsize(type,base,cur,cnt,init) \ |
574 | #define array_needsize(type,base,cur,cnt,init) \ |
319 | if (expect_false ((cnt) > cur)) \ |
575 | if (expect_false ((cnt) > (cur))) \ |
320 | { \ |
576 | { \ |
321 | int newcnt = cur; \ |
577 | int ocur_ = (cur); \ |
322 | do \ |
578 | (base) = (type *)array_realloc \ |
323 | { \ |
579 | (sizeof (type), (base), &(cur), (cnt)); \ |
324 | newcnt = array_roundsize (type, newcnt << 1); \ |
580 | init ((base) + (ocur_), (cur) - ocur_); \ |
325 | } \ |
|
|
326 | while ((cnt) > newcnt); \ |
|
|
327 | \ |
|
|
328 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
329 | init (base + cur, newcnt - cur); \ |
|
|
330 | cur = newcnt; \ |
|
|
331 | } |
581 | } |
332 | |
582 | |
|
|
583 | #if 0 |
333 | #define array_slim(type,stem) \ |
584 | #define array_slim(type,stem) \ |
334 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
585 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
335 | { \ |
586 | { \ |
336 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
587 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
337 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
588 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
338 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
589 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
339 | } |
590 | } |
|
|
591 | #endif |
340 | |
592 | |
341 | #define array_free(stem, idx) \ |
593 | #define array_free(stem, idx) \ |
342 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
594 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
343 | |
595 | |
344 | /*****************************************************************************/ |
596 | /*****************************************************************************/ |
345 | |
597 | |
346 | static void |
598 | void noinline |
|
|
599 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
600 | { |
|
|
601 | W w_ = (W)w; |
|
|
602 | int pri = ABSPRI (w_); |
|
|
603 | |
|
|
604 | if (expect_false (w_->pending)) |
|
|
605 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
606 | else |
|
|
607 | { |
|
|
608 | w_->pending = ++pendingcnt [pri]; |
|
|
609 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
610 | pendings [pri][w_->pending - 1].w = w_; |
|
|
611 | pendings [pri][w_->pending - 1].events = revents; |
|
|
612 | } |
|
|
613 | } |
|
|
614 | |
|
|
615 | void inline_speed |
|
|
616 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
617 | { |
|
|
618 | int i; |
|
|
619 | |
|
|
620 | for (i = 0; i < eventcnt; ++i) |
|
|
621 | ev_feed_event (EV_A_ events [i], type); |
|
|
622 | } |
|
|
623 | |
|
|
624 | /*****************************************************************************/ |
|
|
625 | |
|
|
626 | void inline_size |
347 | anfds_init (ANFD *base, int count) |
627 | anfds_init (ANFD *base, int count) |
348 | { |
628 | { |
349 | while (count--) |
629 | while (count--) |
350 | { |
630 | { |
351 | base->head = 0; |
631 | base->head = 0; |
… | |
… | |
354 | |
634 | |
355 | ++base; |
635 | ++base; |
356 | } |
636 | } |
357 | } |
637 | } |
358 | |
638 | |
359 | void |
639 | void inline_speed |
360 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
361 | { |
|
|
362 | W w_ = (W)w; |
|
|
363 | |
|
|
364 | if (w_->pending) |
|
|
365 | { |
|
|
366 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
|
|
367 | return; |
|
|
368 | } |
|
|
369 | |
|
|
370 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
371 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
|
|
372 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
373 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
374 | } |
|
|
375 | |
|
|
376 | static void |
|
|
377 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
378 | { |
|
|
379 | int i; |
|
|
380 | |
|
|
381 | for (i = 0; i < eventcnt; ++i) |
|
|
382 | ev_feed_event (EV_A_ events [i], type); |
|
|
383 | } |
|
|
384 | |
|
|
385 | inline void |
|
|
386 | fd_event (EV_P_ int fd, int revents) |
640 | fd_event (EV_P_ int fd, int revents) |
387 | { |
641 | { |
388 | ANFD *anfd = anfds + fd; |
642 | ANFD *anfd = anfds + fd; |
389 | struct ev_io *w; |
643 | ev_io *w; |
390 | |
644 | |
391 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
645 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
392 | { |
646 | { |
393 | int ev = w->events & revents; |
647 | int ev = w->events & revents; |
394 | |
648 | |
395 | if (ev) |
649 | if (ev) |
396 | ev_feed_event (EV_A_ (W)w, ev); |
650 | ev_feed_event (EV_A_ (W)w, ev); |
… | |
… | |
398 | } |
652 | } |
399 | |
653 | |
400 | void |
654 | void |
401 | ev_feed_fd_event (EV_P_ int fd, int revents) |
655 | ev_feed_fd_event (EV_P_ int fd, int revents) |
402 | { |
656 | { |
|
|
657 | if (fd >= 0 && fd < anfdmax) |
403 | fd_event (EV_A_ fd, revents); |
658 | fd_event (EV_A_ fd, revents); |
404 | } |
659 | } |
405 | |
660 | |
406 | /*****************************************************************************/ |
661 | void inline_size |
407 | |
|
|
408 | static void |
|
|
409 | fd_reify (EV_P) |
662 | fd_reify (EV_P) |
410 | { |
663 | { |
411 | int i; |
664 | int i; |
412 | |
665 | |
413 | for (i = 0; i < fdchangecnt; ++i) |
666 | for (i = 0; i < fdchangecnt; ++i) |
414 | { |
667 | { |
415 | int fd = fdchanges [i]; |
668 | int fd = fdchanges [i]; |
416 | ANFD *anfd = anfds + fd; |
669 | ANFD *anfd = anfds + fd; |
417 | struct ev_io *w; |
670 | ev_io *w; |
418 | |
671 | |
419 | int events = 0; |
672 | unsigned char events = 0; |
420 | |
673 | |
421 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
674 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
422 | events |= w->events; |
675 | events |= (unsigned char)w->events; |
423 | |
676 | |
424 | #if EV_SELECT_IS_WINSOCKET |
677 | #if EV_SELECT_IS_WINSOCKET |
425 | if (events) |
678 | if (events) |
426 | { |
679 | { |
427 | unsigned long argp; |
680 | unsigned long argp; |
|
|
681 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
682 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
683 | #else |
428 | anfd->handle = _get_osfhandle (fd); |
684 | anfd->handle = _get_osfhandle (fd); |
|
|
685 | #endif |
429 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
686 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
430 | } |
687 | } |
431 | #endif |
688 | #endif |
432 | |
689 | |
|
|
690 | { |
|
|
691 | unsigned char o_events = anfd->events; |
|
|
692 | unsigned char o_reify = anfd->reify; |
|
|
693 | |
433 | anfd->reify = 0; |
694 | anfd->reify = 0; |
434 | |
|
|
435 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
436 | anfd->events = events; |
695 | anfd->events = events; |
|
|
696 | |
|
|
697 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
698 | backend_modify (EV_A_ fd, o_events, events); |
|
|
699 | } |
437 | } |
700 | } |
438 | |
701 | |
439 | fdchangecnt = 0; |
702 | fdchangecnt = 0; |
440 | } |
703 | } |
441 | |
704 | |
442 | static void |
705 | void inline_size |
443 | fd_change (EV_P_ int fd) |
706 | fd_change (EV_P_ int fd, int flags) |
444 | { |
707 | { |
445 | if (anfds [fd].reify) |
708 | unsigned char reify = anfds [fd].reify; |
446 | return; |
|
|
447 | |
|
|
448 | anfds [fd].reify = 1; |
709 | anfds [fd].reify |= flags; |
449 | |
710 | |
|
|
711 | if (expect_true (!reify)) |
|
|
712 | { |
450 | ++fdchangecnt; |
713 | ++fdchangecnt; |
451 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
714 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
452 | fdchanges [fdchangecnt - 1] = fd; |
715 | fdchanges [fdchangecnt - 1] = fd; |
|
|
716 | } |
453 | } |
717 | } |
454 | |
718 | |
455 | static void |
719 | void inline_speed |
456 | fd_kill (EV_P_ int fd) |
720 | fd_kill (EV_P_ int fd) |
457 | { |
721 | { |
458 | struct ev_io *w; |
722 | ev_io *w; |
459 | |
723 | |
460 | while ((w = (struct ev_io *)anfds [fd].head)) |
724 | while ((w = (ev_io *)anfds [fd].head)) |
461 | { |
725 | { |
462 | ev_io_stop (EV_A_ w); |
726 | ev_io_stop (EV_A_ w); |
463 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
727 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
464 | } |
728 | } |
465 | } |
729 | } |
466 | |
730 | |
467 | static int |
731 | int inline_size |
468 | fd_valid (int fd) |
732 | fd_valid (int fd) |
469 | { |
733 | { |
470 | #ifdef _WIN32 |
734 | #ifdef _WIN32 |
471 | return _get_osfhandle (fd) != -1; |
735 | return _get_osfhandle (fd) != -1; |
472 | #else |
736 | #else |
473 | return fcntl (fd, F_GETFD) != -1; |
737 | return fcntl (fd, F_GETFD) != -1; |
474 | #endif |
738 | #endif |
475 | } |
739 | } |
476 | |
740 | |
477 | /* called on EBADF to verify fds */ |
741 | /* called on EBADF to verify fds */ |
478 | static void |
742 | static void noinline |
479 | fd_ebadf (EV_P) |
743 | fd_ebadf (EV_P) |
480 | { |
744 | { |
481 | int fd; |
745 | int fd; |
482 | |
746 | |
483 | for (fd = 0; fd < anfdmax; ++fd) |
747 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
485 | if (!fd_valid (fd) == -1 && errno == EBADF) |
749 | if (!fd_valid (fd) == -1 && errno == EBADF) |
486 | fd_kill (EV_A_ fd); |
750 | fd_kill (EV_A_ fd); |
487 | } |
751 | } |
488 | |
752 | |
489 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
753 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
490 | static void |
754 | static void noinline |
491 | fd_enomem (EV_P) |
755 | fd_enomem (EV_P) |
492 | { |
756 | { |
493 | int fd; |
757 | int fd; |
494 | |
758 | |
495 | for (fd = anfdmax; fd--; ) |
759 | for (fd = anfdmax; fd--; ) |
… | |
… | |
498 | fd_kill (EV_A_ fd); |
762 | fd_kill (EV_A_ fd); |
499 | return; |
763 | return; |
500 | } |
764 | } |
501 | } |
765 | } |
502 | |
766 | |
503 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
767 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
504 | static void |
768 | static void noinline |
505 | fd_rearm_all (EV_P) |
769 | fd_rearm_all (EV_P) |
506 | { |
770 | { |
507 | int fd; |
771 | int fd; |
508 | |
772 | |
509 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
510 | for (fd = 0; fd < anfdmax; ++fd) |
773 | for (fd = 0; fd < anfdmax; ++fd) |
511 | if (anfds [fd].events) |
774 | if (anfds [fd].events) |
512 | { |
775 | { |
513 | anfds [fd].events = 0; |
776 | anfds [fd].events = 0; |
514 | fd_change (EV_A_ fd); |
777 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
515 | } |
778 | } |
516 | } |
779 | } |
517 | |
780 | |
518 | /*****************************************************************************/ |
781 | /*****************************************************************************/ |
519 | |
782 | |
520 | static void |
783 | /* |
|
|
784 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
785 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
786 | * the branching factor of the d-tree. |
|
|
787 | */ |
|
|
788 | |
|
|
789 | /* |
|
|
790 | * at the moment we allow libev the luxury of two heaps, |
|
|
791 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
792 | * which is more cache-efficient. |
|
|
793 | * the difference is about 5% with 50000+ watchers. |
|
|
794 | */ |
|
|
795 | #define EV_USE_4HEAP !EV_MINIMAL |
|
|
796 | #if EV_USE_4HEAP |
|
|
797 | |
|
|
798 | #define DHEAP 4 |
|
|
799 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
800 | |
|
|
801 | /* towards the root */ |
|
|
802 | void inline_speed |
521 | upheap (WT *heap, int k) |
803 | upheap (ANHE *heap, int k) |
522 | { |
804 | { |
523 | WT w = heap [k]; |
805 | ANHE he = heap [k]; |
524 | |
806 | |
525 | while (k && heap [k >> 1]->at > w->at) |
807 | for (;;) |
526 | { |
808 | { |
|
|
809 | int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0; |
|
|
810 | |
|
|
811 | if (p == k || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
812 | break; |
|
|
813 | |
527 | heap [k] = heap [k >> 1]; |
814 | heap [k] = heap [p]; |
528 | ((W)heap [k])->active = k + 1; |
815 | ev_active (ANHE_w (heap [k])) = k; |
529 | k >>= 1; |
816 | k = p; |
|
|
817 | } |
|
|
818 | |
|
|
819 | ev_active (ANHE_w (he)) = k; |
|
|
820 | heap [k] = he; |
|
|
821 | } |
|
|
822 | |
|
|
823 | /* away from the root */ |
|
|
824 | void inline_speed |
|
|
825 | downheap (ANHE *heap, int N, int k) |
|
|
826 | { |
|
|
827 | ANHE he = heap [k]; |
|
|
828 | ANHE *E = heap + N + HEAP0; |
|
|
829 | |
|
|
830 | for (;;) |
|
|
831 | { |
|
|
832 | ev_tstamp minat; |
|
|
833 | ANHE *minpos; |
|
|
834 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; |
|
|
835 | |
|
|
836 | // find minimum child |
|
|
837 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
838 | { |
|
|
839 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
840 | if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
841 | if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
842 | if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
843 | } |
|
|
844 | else if (pos < E) |
|
|
845 | { |
|
|
846 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
847 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
848 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
849 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
850 | } |
|
|
851 | else |
|
|
852 | break; |
|
|
853 | |
|
|
854 | if (ANHE_at (he) <= minat) |
|
|
855 | break; |
|
|
856 | |
|
|
857 | ev_active (ANHE_w (*minpos)) = k; |
|
|
858 | heap [k] = *minpos; |
|
|
859 | |
|
|
860 | k = minpos - heap; |
|
|
861 | } |
|
|
862 | |
|
|
863 | ev_active (ANHE_w (he)) = k; |
|
|
864 | heap [k] = he; |
|
|
865 | } |
|
|
866 | |
|
|
867 | #else // 4HEAP |
|
|
868 | |
|
|
869 | #define HEAP0 1 |
|
|
870 | |
|
|
871 | /* towards the root */ |
|
|
872 | void inline_speed |
|
|
873 | upheap (ANHE *heap, int k) |
|
|
874 | { |
|
|
875 | ANHE he = heap [k]; |
|
|
876 | |
|
|
877 | for (;;) |
|
|
878 | { |
|
|
879 | int p = k >> 1; |
|
|
880 | |
|
|
881 | /* maybe we could use a dummy element at heap [0]? */ |
|
|
882 | if (!p || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
883 | break; |
|
|
884 | |
|
|
885 | heap [k] = heap [p]; |
|
|
886 | ev_active (ANHE_w (heap [k])) = k; |
|
|
887 | k = p; |
530 | } |
888 | } |
531 | |
889 | |
532 | heap [k] = w; |
890 | heap [k] = w; |
533 | ((W)heap [k])->active = k + 1; |
891 | ev_active (ANHE_w (heap [k])) = k; |
534 | |
|
|
535 | } |
892 | } |
536 | |
893 | |
537 | static void |
894 | /* away from the root */ |
|
|
895 | void inline_speed |
538 | downheap (WT *heap, int N, int k) |
896 | downheap (ANHE *heap, int N, int k) |
539 | { |
897 | { |
540 | WT w = heap [k]; |
898 | ANHE he = heap [k]; |
541 | |
899 | |
542 | while (k < (N >> 1)) |
900 | for (;;) |
543 | { |
901 | { |
544 | int j = k << 1; |
902 | int c = k << 1; |
545 | |
903 | |
546 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
904 | if (c > N) |
547 | ++j; |
|
|
548 | |
|
|
549 | if (w->at <= heap [j]->at) |
|
|
550 | break; |
905 | break; |
551 | |
906 | |
|
|
907 | c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
908 | ? 1 : 0; |
|
|
909 | |
|
|
910 | if (w->at <= ANHE_at (heap [c])) |
|
|
911 | break; |
|
|
912 | |
552 | heap [k] = heap [j]; |
913 | heap [k] = heap [c]; |
553 | ((W)heap [k])->active = k + 1; |
914 | ev_active (ANHE_w (heap [k])) = k; |
|
|
915 | |
554 | k = j; |
916 | k = c; |
555 | } |
917 | } |
556 | |
918 | |
557 | heap [k] = w; |
919 | heap [k] = he; |
558 | ((W)heap [k])->active = k + 1; |
920 | ev_active (ANHE_w (he)) = k; |
559 | } |
921 | } |
|
|
922 | #endif |
560 | |
923 | |
561 | inline void |
924 | void inline_size |
562 | adjustheap (WT *heap, int N, int k) |
925 | adjustheap (ANHE *heap, int N, int k) |
563 | { |
926 | { |
564 | upheap (heap, k); |
927 | upheap (heap, k); |
565 | downheap (heap, N, k); |
928 | downheap (heap, N, k); |
566 | } |
929 | } |
567 | |
930 | |
568 | /*****************************************************************************/ |
931 | /*****************************************************************************/ |
569 | |
932 | |
570 | typedef struct |
933 | typedef struct |
571 | { |
934 | { |
572 | WL head; |
935 | WL head; |
573 | sig_atomic_t volatile gotsig; |
936 | EV_ATOMIC_T gotsig; |
574 | } ANSIG; |
937 | } ANSIG; |
575 | |
938 | |
576 | static ANSIG *signals; |
939 | static ANSIG *signals; |
577 | static int signalmax; |
940 | static int signalmax; |
578 | |
941 | |
579 | static int sigpipe [2]; |
942 | static EV_ATOMIC_T gotsig; |
580 | static sig_atomic_t volatile gotsig; |
|
|
581 | static struct ev_io sigev; |
|
|
582 | |
943 | |
583 | static void |
944 | void inline_size |
584 | signals_init (ANSIG *base, int count) |
945 | signals_init (ANSIG *base, int count) |
585 | { |
946 | { |
586 | while (count--) |
947 | while (count--) |
587 | { |
948 | { |
588 | base->head = 0; |
949 | base->head = 0; |
… | |
… | |
590 | |
951 | |
591 | ++base; |
952 | ++base; |
592 | } |
953 | } |
593 | } |
954 | } |
594 | |
955 | |
595 | static void |
956 | /*****************************************************************************/ |
596 | sighandler (int signum) |
|
|
597 | { |
|
|
598 | #if _WIN32 |
|
|
599 | signal (signum, sighandler); |
|
|
600 | #endif |
|
|
601 | |
957 | |
602 | signals [signum - 1].gotsig = 1; |
958 | void inline_speed |
603 | |
|
|
604 | if (!gotsig) |
|
|
605 | { |
|
|
606 | int old_errno = errno; |
|
|
607 | gotsig = 1; |
|
|
608 | write (sigpipe [1], &signum, 1); |
|
|
609 | errno = old_errno; |
|
|
610 | } |
|
|
611 | } |
|
|
612 | |
|
|
613 | void |
|
|
614 | ev_feed_signal_event (EV_P_ int signum) |
|
|
615 | { |
|
|
616 | WL w; |
|
|
617 | |
|
|
618 | #if EV_MULTIPLICITY |
|
|
619 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
620 | #endif |
|
|
621 | |
|
|
622 | --signum; |
|
|
623 | |
|
|
624 | if (signum < 0 || signum >= signalmax) |
|
|
625 | return; |
|
|
626 | |
|
|
627 | signals [signum].gotsig = 0; |
|
|
628 | |
|
|
629 | for (w = signals [signum].head; w; w = w->next) |
|
|
630 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
631 | } |
|
|
632 | |
|
|
633 | static void |
|
|
634 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
635 | { |
|
|
636 | int signum; |
|
|
637 | |
|
|
638 | read (sigpipe [0], &revents, 1); |
|
|
639 | gotsig = 0; |
|
|
640 | |
|
|
641 | for (signum = signalmax; signum--; ) |
|
|
642 | if (signals [signum].gotsig) |
|
|
643 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
644 | } |
|
|
645 | |
|
|
646 | inline void |
|
|
647 | fd_intern (int fd) |
959 | fd_intern (int fd) |
648 | { |
960 | { |
649 | #ifdef _WIN32 |
961 | #ifdef _WIN32 |
650 | int arg = 1; |
962 | int arg = 1; |
651 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
963 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
… | |
… | |
653 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
965 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
654 | fcntl (fd, F_SETFL, O_NONBLOCK); |
966 | fcntl (fd, F_SETFL, O_NONBLOCK); |
655 | #endif |
967 | #endif |
656 | } |
968 | } |
657 | |
969 | |
|
|
970 | static void noinline |
|
|
971 | evpipe_init (EV_P) |
|
|
972 | { |
|
|
973 | if (!ev_is_active (&pipeev)) |
|
|
974 | { |
|
|
975 | #if EV_USE_EVENTFD |
|
|
976 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
977 | { |
|
|
978 | evpipe [0] = -1; |
|
|
979 | fd_intern (evfd); |
|
|
980 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
981 | } |
|
|
982 | else |
|
|
983 | #endif |
|
|
984 | { |
|
|
985 | while (pipe (evpipe)) |
|
|
986 | syserr ("(libev) error creating signal/async pipe"); |
|
|
987 | |
|
|
988 | fd_intern (evpipe [0]); |
|
|
989 | fd_intern (evpipe [1]); |
|
|
990 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
991 | } |
|
|
992 | |
|
|
993 | ev_io_start (EV_A_ &pipeev); |
|
|
994 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
995 | } |
|
|
996 | } |
|
|
997 | |
|
|
998 | void inline_size |
|
|
999 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1000 | { |
|
|
1001 | if (!*flag) |
|
|
1002 | { |
|
|
1003 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1004 | |
|
|
1005 | *flag = 1; |
|
|
1006 | |
|
|
1007 | #if EV_USE_EVENTFD |
|
|
1008 | if (evfd >= 0) |
|
|
1009 | { |
|
|
1010 | uint64_t counter = 1; |
|
|
1011 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1012 | } |
|
|
1013 | else |
|
|
1014 | #endif |
|
|
1015 | write (evpipe [1], &old_errno, 1); |
|
|
1016 | |
|
|
1017 | errno = old_errno; |
|
|
1018 | } |
|
|
1019 | } |
|
|
1020 | |
658 | static void |
1021 | static void |
659 | siginit (EV_P) |
1022 | pipecb (EV_P_ ev_io *iow, int revents) |
660 | { |
1023 | { |
661 | fd_intern (sigpipe [0]); |
1024 | #if EV_USE_EVENTFD |
662 | fd_intern (sigpipe [1]); |
1025 | if (evfd >= 0) |
|
|
1026 | { |
|
|
1027 | uint64_t counter; |
|
|
1028 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1029 | } |
|
|
1030 | else |
|
|
1031 | #endif |
|
|
1032 | { |
|
|
1033 | char dummy; |
|
|
1034 | read (evpipe [0], &dummy, 1); |
|
|
1035 | } |
663 | |
1036 | |
664 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
1037 | if (gotsig && ev_is_default_loop (EV_A)) |
665 | ev_io_start (EV_A_ &sigev); |
1038 | { |
666 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1039 | int signum; |
|
|
1040 | gotsig = 0; |
|
|
1041 | |
|
|
1042 | for (signum = signalmax; signum--; ) |
|
|
1043 | if (signals [signum].gotsig) |
|
|
1044 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1045 | } |
|
|
1046 | |
|
|
1047 | #if EV_ASYNC_ENABLE |
|
|
1048 | if (gotasync) |
|
|
1049 | { |
|
|
1050 | int i; |
|
|
1051 | gotasync = 0; |
|
|
1052 | |
|
|
1053 | for (i = asynccnt; i--; ) |
|
|
1054 | if (asyncs [i]->sent) |
|
|
1055 | { |
|
|
1056 | asyncs [i]->sent = 0; |
|
|
1057 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1058 | } |
|
|
1059 | } |
|
|
1060 | #endif |
667 | } |
1061 | } |
668 | |
1062 | |
669 | /*****************************************************************************/ |
1063 | /*****************************************************************************/ |
670 | |
1064 | |
671 | static struct ev_child *childs [PID_HASHSIZE]; |
1065 | static void |
|
|
1066 | ev_sighandler (int signum) |
|
|
1067 | { |
|
|
1068 | #if EV_MULTIPLICITY |
|
|
1069 | struct ev_loop *loop = &default_loop_struct; |
|
|
1070 | #endif |
|
|
1071 | |
|
|
1072 | #if _WIN32 |
|
|
1073 | signal (signum, ev_sighandler); |
|
|
1074 | #endif |
|
|
1075 | |
|
|
1076 | signals [signum - 1].gotsig = 1; |
|
|
1077 | evpipe_write (EV_A_ &gotsig); |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | void noinline |
|
|
1081 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1082 | { |
|
|
1083 | WL w; |
|
|
1084 | |
|
|
1085 | #if EV_MULTIPLICITY |
|
|
1086 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1087 | #endif |
|
|
1088 | |
|
|
1089 | --signum; |
|
|
1090 | |
|
|
1091 | if (signum < 0 || signum >= signalmax) |
|
|
1092 | return; |
|
|
1093 | |
|
|
1094 | signals [signum].gotsig = 0; |
|
|
1095 | |
|
|
1096 | for (w = signals [signum].head; w; w = w->next) |
|
|
1097 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1098 | } |
|
|
1099 | |
|
|
1100 | /*****************************************************************************/ |
|
|
1101 | |
|
|
1102 | static WL childs [EV_PID_HASHSIZE]; |
672 | |
1103 | |
673 | #ifndef _WIN32 |
1104 | #ifndef _WIN32 |
674 | |
1105 | |
675 | static struct ev_signal childev; |
1106 | static ev_signal childev; |
|
|
1107 | |
|
|
1108 | #ifndef WIFCONTINUED |
|
|
1109 | # define WIFCONTINUED(status) 0 |
|
|
1110 | #endif |
|
|
1111 | |
|
|
1112 | void inline_speed |
|
|
1113 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1114 | { |
|
|
1115 | ev_child *w; |
|
|
1116 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1117 | |
|
|
1118 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1119 | { |
|
|
1120 | if ((w->pid == pid || !w->pid) |
|
|
1121 | && (!traced || (w->flags & 1))) |
|
|
1122 | { |
|
|
1123 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1124 | w->rpid = pid; |
|
|
1125 | w->rstatus = status; |
|
|
1126 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1127 | } |
|
|
1128 | } |
|
|
1129 | } |
676 | |
1130 | |
677 | #ifndef WCONTINUED |
1131 | #ifndef WCONTINUED |
678 | # define WCONTINUED 0 |
1132 | # define WCONTINUED 0 |
679 | #endif |
1133 | #endif |
680 | |
1134 | |
681 | static void |
1135 | static void |
682 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
683 | { |
|
|
684 | struct ev_child *w; |
|
|
685 | |
|
|
686 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
687 | if (w->pid == pid || !w->pid) |
|
|
688 | { |
|
|
689 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
690 | w->rpid = pid; |
|
|
691 | w->rstatus = status; |
|
|
692 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
693 | } |
|
|
694 | } |
|
|
695 | |
|
|
696 | static void |
|
|
697 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1136 | childcb (EV_P_ ev_signal *sw, int revents) |
698 | { |
1137 | { |
699 | int pid, status; |
1138 | int pid, status; |
700 | |
1139 | |
|
|
1140 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
701 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1141 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
702 | { |
1142 | if (!WCONTINUED |
|
|
1143 | || errno != EINVAL |
|
|
1144 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1145 | return; |
|
|
1146 | |
703 | /* make sure we are called again until all childs have been reaped */ |
1147 | /* make sure we are called again until all children have been reaped */ |
|
|
1148 | /* we need to do it this way so that the callback gets called before we continue */ |
704 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1149 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
705 | |
1150 | |
706 | child_reap (EV_A_ sw, pid, pid, status); |
1151 | child_reap (EV_A_ pid, pid, status); |
|
|
1152 | if (EV_PID_HASHSIZE > 1) |
707 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1153 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
708 | } |
|
|
709 | } |
1154 | } |
710 | |
1155 | |
711 | #endif |
1156 | #endif |
712 | |
1157 | |
713 | /*****************************************************************************/ |
1158 | /*****************************************************************************/ |
714 | |
1159 | |
|
|
1160 | #if EV_USE_PORT |
|
|
1161 | # include "ev_port.c" |
|
|
1162 | #endif |
715 | #if EV_USE_KQUEUE |
1163 | #if EV_USE_KQUEUE |
716 | # include "ev_kqueue.c" |
1164 | # include "ev_kqueue.c" |
717 | #endif |
1165 | #endif |
718 | #if EV_USE_EPOLL |
1166 | #if EV_USE_EPOLL |
719 | # include "ev_epoll.c" |
1167 | # include "ev_epoll.c" |
… | |
… | |
736 | { |
1184 | { |
737 | return EV_VERSION_MINOR; |
1185 | return EV_VERSION_MINOR; |
738 | } |
1186 | } |
739 | |
1187 | |
740 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1188 | /* return true if we are running with elevated privileges and should ignore env variables */ |
741 | static int |
1189 | int inline_size |
742 | enable_secure (void) |
1190 | enable_secure (void) |
743 | { |
1191 | { |
744 | #ifdef _WIN32 |
1192 | #ifdef _WIN32 |
745 | return 0; |
1193 | return 0; |
746 | #else |
1194 | #else |
… | |
… | |
748 | || getgid () != getegid (); |
1196 | || getgid () != getegid (); |
749 | #endif |
1197 | #endif |
750 | } |
1198 | } |
751 | |
1199 | |
752 | unsigned int |
1200 | unsigned int |
753 | ev_method (EV_P) |
1201 | ev_supported_backends (void) |
754 | { |
1202 | { |
755 | return method; |
1203 | unsigned int flags = 0; |
756 | } |
|
|
757 | |
1204 | |
758 | static void |
1205 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1206 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1207 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1208 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1209 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1210 | |
|
|
1211 | return flags; |
|
|
1212 | } |
|
|
1213 | |
|
|
1214 | unsigned int |
|
|
1215 | ev_recommended_backends (void) |
|
|
1216 | { |
|
|
1217 | unsigned int flags = ev_supported_backends (); |
|
|
1218 | |
|
|
1219 | #ifndef __NetBSD__ |
|
|
1220 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1221 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1222 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1223 | #endif |
|
|
1224 | #ifdef __APPLE__ |
|
|
1225 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1226 | flags &= ~EVBACKEND_POLL; |
|
|
1227 | #endif |
|
|
1228 | |
|
|
1229 | return flags; |
|
|
1230 | } |
|
|
1231 | |
|
|
1232 | unsigned int |
|
|
1233 | ev_embeddable_backends (void) |
|
|
1234 | { |
|
|
1235 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1236 | |
|
|
1237 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1238 | /* please fix it and tell me how to detect the fix */ |
|
|
1239 | flags &= ~EVBACKEND_EPOLL; |
|
|
1240 | |
|
|
1241 | return flags; |
|
|
1242 | } |
|
|
1243 | |
|
|
1244 | unsigned int |
|
|
1245 | ev_backend (EV_P) |
|
|
1246 | { |
|
|
1247 | return backend; |
|
|
1248 | } |
|
|
1249 | |
|
|
1250 | unsigned int |
|
|
1251 | ev_loop_count (EV_P) |
|
|
1252 | { |
|
|
1253 | return loop_count; |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | void |
|
|
1257 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1258 | { |
|
|
1259 | io_blocktime = interval; |
|
|
1260 | } |
|
|
1261 | |
|
|
1262 | void |
|
|
1263 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1264 | { |
|
|
1265 | timeout_blocktime = interval; |
|
|
1266 | } |
|
|
1267 | |
|
|
1268 | static void noinline |
759 | loop_init (EV_P_ unsigned int flags) |
1269 | loop_init (EV_P_ unsigned int flags) |
760 | { |
1270 | { |
761 | if (!method) |
1271 | if (!backend) |
762 | { |
1272 | { |
763 | #if EV_USE_MONOTONIC |
1273 | #if EV_USE_MONOTONIC |
764 | { |
1274 | { |
765 | struct timespec ts; |
1275 | struct timespec ts; |
766 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1276 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
767 | have_monotonic = 1; |
1277 | have_monotonic = 1; |
768 | } |
1278 | } |
769 | #endif |
1279 | #endif |
770 | |
1280 | |
771 | ev_rt_now = ev_time (); |
1281 | ev_rt_now = ev_time (); |
772 | mn_now = get_clock (); |
1282 | mn_now = get_clock (); |
773 | now_floor = mn_now; |
1283 | now_floor = mn_now; |
774 | rtmn_diff = ev_rt_now - mn_now; |
1284 | rtmn_diff = ev_rt_now - mn_now; |
775 | |
1285 | |
776 | if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) |
1286 | io_blocktime = 0.; |
|
|
1287 | timeout_blocktime = 0.; |
|
|
1288 | backend = 0; |
|
|
1289 | backend_fd = -1; |
|
|
1290 | gotasync = 0; |
|
|
1291 | #if EV_USE_INOTIFY |
|
|
1292 | fs_fd = -2; |
|
|
1293 | #endif |
|
|
1294 | |
|
|
1295 | /* pid check not overridable via env */ |
|
|
1296 | #ifndef _WIN32 |
|
|
1297 | if (flags & EVFLAG_FORKCHECK) |
|
|
1298 | curpid = getpid (); |
|
|
1299 | #endif |
|
|
1300 | |
|
|
1301 | if (!(flags & EVFLAG_NOENV) |
|
|
1302 | && !enable_secure () |
|
|
1303 | && getenv ("LIBEV_FLAGS")) |
777 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1304 | flags = atoi (getenv ("LIBEV_FLAGS")); |
778 | |
1305 | |
779 | if (!(flags & 0x0000ffff)) |
1306 | if (!(flags & 0x0000ffffU)) |
780 | flags |= 0x0000ffff; |
1307 | flags |= ev_recommended_backends (); |
781 | |
1308 | |
782 | method = 0; |
1309 | #if EV_USE_PORT |
|
|
1310 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1311 | #endif |
783 | #if EV_USE_KQUEUE |
1312 | #if EV_USE_KQUEUE |
784 | if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); |
1313 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
785 | #endif |
1314 | #endif |
786 | #if EV_USE_EPOLL |
1315 | #if EV_USE_EPOLL |
787 | if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); |
1316 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
788 | #endif |
1317 | #endif |
789 | #if EV_USE_POLL |
1318 | #if EV_USE_POLL |
790 | if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); |
1319 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
791 | #endif |
1320 | #endif |
792 | #if EV_USE_SELECT |
1321 | #if EV_USE_SELECT |
793 | if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); |
1322 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
794 | #endif |
1323 | #endif |
795 | |
1324 | |
796 | ev_init (&sigev, sigcb); |
1325 | ev_init (&pipeev, pipecb); |
797 | ev_set_priority (&sigev, EV_MAXPRI); |
1326 | ev_set_priority (&pipeev, EV_MAXPRI); |
798 | } |
1327 | } |
799 | } |
1328 | } |
800 | |
1329 | |
801 | void |
1330 | static void noinline |
802 | loop_destroy (EV_P) |
1331 | loop_destroy (EV_P) |
803 | { |
1332 | { |
804 | int i; |
1333 | int i; |
805 | |
1334 | |
|
|
1335 | if (ev_is_active (&pipeev)) |
|
|
1336 | { |
|
|
1337 | ev_ref (EV_A); /* signal watcher */ |
|
|
1338 | ev_io_stop (EV_A_ &pipeev); |
|
|
1339 | |
|
|
1340 | #if EV_USE_EVENTFD |
|
|
1341 | if (evfd >= 0) |
|
|
1342 | close (evfd); |
|
|
1343 | #endif |
|
|
1344 | |
|
|
1345 | if (evpipe [0] >= 0) |
|
|
1346 | { |
|
|
1347 | close (evpipe [0]); |
|
|
1348 | close (evpipe [1]); |
|
|
1349 | } |
|
|
1350 | } |
|
|
1351 | |
|
|
1352 | #if EV_USE_INOTIFY |
|
|
1353 | if (fs_fd >= 0) |
|
|
1354 | close (fs_fd); |
|
|
1355 | #endif |
|
|
1356 | |
|
|
1357 | if (backend_fd >= 0) |
|
|
1358 | close (backend_fd); |
|
|
1359 | |
|
|
1360 | #if EV_USE_PORT |
|
|
1361 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1362 | #endif |
806 | #if EV_USE_KQUEUE |
1363 | #if EV_USE_KQUEUE |
807 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
1364 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
808 | #endif |
1365 | #endif |
809 | #if EV_USE_EPOLL |
1366 | #if EV_USE_EPOLL |
810 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
1367 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
811 | #endif |
1368 | #endif |
812 | #if EV_USE_POLL |
1369 | #if EV_USE_POLL |
813 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
1370 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
814 | #endif |
1371 | #endif |
815 | #if EV_USE_SELECT |
1372 | #if EV_USE_SELECT |
816 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
1373 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
817 | #endif |
1374 | #endif |
818 | |
1375 | |
819 | for (i = NUMPRI; i--; ) |
1376 | for (i = NUMPRI; i--; ) |
|
|
1377 | { |
820 | array_free (pending, [i]); |
1378 | array_free (pending, [i]); |
|
|
1379 | #if EV_IDLE_ENABLE |
|
|
1380 | array_free (idle, [i]); |
|
|
1381 | #endif |
|
|
1382 | } |
|
|
1383 | |
|
|
1384 | ev_free (anfds); anfdmax = 0; |
821 | |
1385 | |
822 | /* have to use the microsoft-never-gets-it-right macro */ |
1386 | /* have to use the microsoft-never-gets-it-right macro */ |
823 | array_free (fdchange, EMPTY0); |
1387 | array_free (fdchange, EMPTY); |
824 | array_free (timer, EMPTY0); |
1388 | array_free (timer, EMPTY); |
825 | #if EV_PERIODICS |
1389 | #if EV_PERIODIC_ENABLE |
826 | array_free (periodic, EMPTY0); |
1390 | array_free (periodic, EMPTY); |
827 | #endif |
1391 | #endif |
|
|
1392 | #if EV_FORK_ENABLE |
828 | array_free (idle, EMPTY0); |
1393 | array_free (fork, EMPTY); |
|
|
1394 | #endif |
829 | array_free (prepare, EMPTY0); |
1395 | array_free (prepare, EMPTY); |
830 | array_free (check, EMPTY0); |
1396 | array_free (check, EMPTY); |
|
|
1397 | #if EV_ASYNC_ENABLE |
|
|
1398 | array_free (async, EMPTY); |
|
|
1399 | #endif |
831 | |
1400 | |
832 | method = 0; |
1401 | backend = 0; |
833 | } |
1402 | } |
834 | |
1403 | |
835 | static void |
1404 | #if EV_USE_INOTIFY |
|
|
1405 | void inline_size infy_fork (EV_P); |
|
|
1406 | #endif |
|
|
1407 | |
|
|
1408 | void inline_size |
836 | loop_fork (EV_P) |
1409 | loop_fork (EV_P) |
837 | { |
1410 | { |
|
|
1411 | #if EV_USE_PORT |
|
|
1412 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1413 | #endif |
|
|
1414 | #if EV_USE_KQUEUE |
|
|
1415 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1416 | #endif |
838 | #if EV_USE_EPOLL |
1417 | #if EV_USE_EPOLL |
839 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
1418 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
840 | #endif |
1419 | #endif |
841 | #if EV_USE_KQUEUE |
1420 | #if EV_USE_INOTIFY |
842 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
1421 | infy_fork (EV_A); |
843 | #endif |
1422 | #endif |
844 | |
1423 | |
845 | if (ev_is_active (&sigev)) |
1424 | if (ev_is_active (&pipeev)) |
846 | { |
1425 | { |
847 | /* default loop */ |
1426 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1427 | /* while we modify the fd vars */ |
|
|
1428 | gotsig = 1; |
|
|
1429 | #if EV_ASYNC_ENABLE |
|
|
1430 | gotasync = 1; |
|
|
1431 | #endif |
848 | |
1432 | |
849 | ev_ref (EV_A); |
1433 | ev_ref (EV_A); |
850 | ev_io_stop (EV_A_ &sigev); |
1434 | ev_io_stop (EV_A_ &pipeev); |
|
|
1435 | |
|
|
1436 | #if EV_USE_EVENTFD |
|
|
1437 | if (evfd >= 0) |
|
|
1438 | close (evfd); |
|
|
1439 | #endif |
|
|
1440 | |
|
|
1441 | if (evpipe [0] >= 0) |
|
|
1442 | { |
851 | close (sigpipe [0]); |
1443 | close (evpipe [0]); |
852 | close (sigpipe [1]); |
1444 | close (evpipe [1]); |
|
|
1445 | } |
853 | |
1446 | |
854 | while (pipe (sigpipe)) |
|
|
855 | syserr ("(libev) error creating pipe"); |
|
|
856 | |
|
|
857 | siginit (EV_A); |
1447 | evpipe_init (EV_A); |
|
|
1448 | /* now iterate over everything, in case we missed something */ |
|
|
1449 | pipecb (EV_A_ &pipeev, EV_READ); |
858 | } |
1450 | } |
859 | |
1451 | |
860 | postfork = 0; |
1452 | postfork = 0; |
861 | } |
1453 | } |
862 | |
1454 | |
… | |
… | |
868 | |
1460 | |
869 | memset (loop, 0, sizeof (struct ev_loop)); |
1461 | memset (loop, 0, sizeof (struct ev_loop)); |
870 | |
1462 | |
871 | loop_init (EV_A_ flags); |
1463 | loop_init (EV_A_ flags); |
872 | |
1464 | |
873 | if (ev_method (EV_A)) |
1465 | if (ev_backend (EV_A)) |
874 | return loop; |
1466 | return loop; |
875 | |
1467 | |
876 | return 0; |
1468 | return 0; |
877 | } |
1469 | } |
878 | |
1470 | |
… | |
… | |
884 | } |
1476 | } |
885 | |
1477 | |
886 | void |
1478 | void |
887 | ev_loop_fork (EV_P) |
1479 | ev_loop_fork (EV_P) |
888 | { |
1480 | { |
889 | postfork = 1; |
1481 | postfork = 1; /* must be in line with ev_default_fork */ |
890 | } |
1482 | } |
891 | |
|
|
892 | #endif |
1483 | #endif |
893 | |
1484 | |
894 | #if EV_MULTIPLICITY |
1485 | #if EV_MULTIPLICITY |
895 | struct ev_loop * |
1486 | struct ev_loop * |
896 | ev_default_loop_ (unsigned int flags) |
1487 | ev_default_loop_init (unsigned int flags) |
897 | #else |
1488 | #else |
898 | int |
1489 | int |
899 | ev_default_loop (unsigned int flags) |
1490 | ev_default_loop (unsigned int flags) |
900 | #endif |
1491 | #endif |
901 | { |
1492 | { |
902 | if (sigpipe [0] == sigpipe [1]) |
|
|
903 | if (pipe (sigpipe)) |
|
|
904 | return 0; |
|
|
905 | |
|
|
906 | if (!ev_default_loop_ptr) |
1493 | if (!ev_default_loop_ptr) |
907 | { |
1494 | { |
908 | #if EV_MULTIPLICITY |
1495 | #if EV_MULTIPLICITY |
909 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1496 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
910 | #else |
1497 | #else |
911 | ev_default_default_loop_ptr = 1; |
1498 | ev_default_loop_ptr = 1; |
912 | #endif |
1499 | #endif |
913 | |
1500 | |
914 | loop_init (EV_A_ flags); |
1501 | loop_init (EV_A_ flags); |
915 | |
1502 | |
916 | if (ev_method (EV_A)) |
1503 | if (ev_backend (EV_A)) |
917 | { |
1504 | { |
918 | siginit (EV_A); |
|
|
919 | |
|
|
920 | #ifndef _WIN32 |
1505 | #ifndef _WIN32 |
921 | ev_signal_init (&childev, childcb, SIGCHLD); |
1506 | ev_signal_init (&childev, childcb, SIGCHLD); |
922 | ev_set_priority (&childev, EV_MAXPRI); |
1507 | ev_set_priority (&childev, EV_MAXPRI); |
923 | ev_signal_start (EV_A_ &childev); |
1508 | ev_signal_start (EV_A_ &childev); |
924 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1509 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
941 | #ifndef _WIN32 |
1526 | #ifndef _WIN32 |
942 | ev_ref (EV_A); /* child watcher */ |
1527 | ev_ref (EV_A); /* child watcher */ |
943 | ev_signal_stop (EV_A_ &childev); |
1528 | ev_signal_stop (EV_A_ &childev); |
944 | #endif |
1529 | #endif |
945 | |
1530 | |
946 | ev_ref (EV_A); /* signal watcher */ |
|
|
947 | ev_io_stop (EV_A_ &sigev); |
|
|
948 | |
|
|
949 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
950 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
951 | |
|
|
952 | loop_destroy (EV_A); |
1531 | loop_destroy (EV_A); |
953 | } |
1532 | } |
954 | |
1533 | |
955 | void |
1534 | void |
956 | ev_default_fork (void) |
1535 | ev_default_fork (void) |
957 | { |
1536 | { |
958 | #if EV_MULTIPLICITY |
1537 | #if EV_MULTIPLICITY |
959 | struct ev_loop *loop = ev_default_loop_ptr; |
1538 | struct ev_loop *loop = ev_default_loop_ptr; |
960 | #endif |
1539 | #endif |
961 | |
1540 | |
962 | if (method) |
1541 | if (backend) |
963 | postfork = 1; |
1542 | postfork = 1; /* must be in line with ev_loop_fork */ |
964 | } |
1543 | } |
965 | |
1544 | |
966 | /*****************************************************************************/ |
1545 | /*****************************************************************************/ |
967 | |
1546 | |
968 | static int |
1547 | void |
969 | any_pending (EV_P) |
1548 | ev_invoke (EV_P_ void *w, int revents) |
970 | { |
1549 | { |
971 | int pri; |
1550 | EV_CB_INVOKE ((W)w, revents); |
972 | |
|
|
973 | for (pri = NUMPRI; pri--; ) |
|
|
974 | if (pendingcnt [pri]) |
|
|
975 | return 1; |
|
|
976 | |
|
|
977 | return 0; |
|
|
978 | } |
1551 | } |
979 | |
1552 | |
980 | static void |
1553 | void inline_speed |
981 | call_pending (EV_P) |
1554 | call_pending (EV_P) |
982 | { |
1555 | { |
983 | int pri; |
1556 | int pri; |
984 | |
1557 | |
985 | for (pri = NUMPRI; pri--; ) |
1558 | for (pri = NUMPRI; pri--; ) |
986 | while (pendingcnt [pri]) |
1559 | while (pendingcnt [pri]) |
987 | { |
1560 | { |
988 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1561 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
989 | |
1562 | |
990 | if (p->w) |
1563 | if (expect_true (p->w)) |
991 | { |
1564 | { |
|
|
1565 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1566 | |
992 | p->w->pending = 0; |
1567 | p->w->pending = 0; |
993 | EV_CB_INVOKE (p->w, p->events); |
1568 | EV_CB_INVOKE (p->w, p->events); |
994 | } |
1569 | } |
995 | } |
1570 | } |
996 | } |
1571 | } |
997 | |
1572 | |
998 | static void |
1573 | #if EV_IDLE_ENABLE |
|
|
1574 | void inline_size |
|
|
1575 | idle_reify (EV_P) |
|
|
1576 | { |
|
|
1577 | if (expect_false (idleall)) |
|
|
1578 | { |
|
|
1579 | int pri; |
|
|
1580 | |
|
|
1581 | for (pri = NUMPRI; pri--; ) |
|
|
1582 | { |
|
|
1583 | if (pendingcnt [pri]) |
|
|
1584 | break; |
|
|
1585 | |
|
|
1586 | if (idlecnt [pri]) |
|
|
1587 | { |
|
|
1588 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1589 | break; |
|
|
1590 | } |
|
|
1591 | } |
|
|
1592 | } |
|
|
1593 | } |
|
|
1594 | #endif |
|
|
1595 | |
|
|
1596 | void inline_size |
999 | timers_reify (EV_P) |
1597 | timers_reify (EV_P) |
1000 | { |
1598 | { |
1001 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
1599 | while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) |
1002 | { |
1600 | { |
1003 | struct ev_timer *w = timers [0]; |
1601 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
1004 | |
1602 | |
1005 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
1603 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
1006 | |
1604 | |
1007 | /* first reschedule or stop timer */ |
1605 | /* first reschedule or stop timer */ |
1008 | if (w->repeat) |
1606 | if (w->repeat) |
1009 | { |
1607 | { |
1010 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1608 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1011 | |
1609 | |
1012 | ((WT)w)->at += w->repeat; |
1610 | ev_at (w) += w->repeat; |
1013 | if (((WT)w)->at < mn_now) |
1611 | if (ev_at (w) < mn_now) |
1014 | ((WT)w)->at = mn_now; |
1612 | ev_at (w) = mn_now; |
1015 | |
1613 | |
1016 | downheap ((WT *)timers, timercnt, 0); |
1614 | downheap (timers, timercnt, HEAP0); |
1017 | } |
1615 | } |
1018 | else |
1616 | else |
1019 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1617 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1020 | |
1618 | |
1021 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
1619 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
1022 | } |
1620 | } |
1023 | } |
1621 | } |
1024 | |
1622 | |
1025 | #if EV_PERIODICS |
1623 | #if EV_PERIODIC_ENABLE |
1026 | static void |
1624 | void inline_size |
1027 | periodics_reify (EV_P) |
1625 | periodics_reify (EV_P) |
1028 | { |
1626 | { |
1029 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
1627 | while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) |
1030 | { |
1628 | { |
1031 | struct ev_periodic *w = periodics [0]; |
1629 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
1032 | |
1630 | |
1033 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
1631 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1034 | |
1632 | |
1035 | /* first reschedule or stop timer */ |
1633 | /* first reschedule or stop timer */ |
1036 | if (w->reschedule_cb) |
1634 | if (w->reschedule_cb) |
1037 | { |
1635 | { |
1038 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
1636 | ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
1039 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
1637 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); |
1040 | downheap ((WT *)periodics, periodiccnt, 0); |
1638 | downheap (periodics, periodiccnt, 1); |
1041 | } |
1639 | } |
1042 | else if (w->interval) |
1640 | else if (w->interval) |
1043 | { |
1641 | { |
1044 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
1642 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1643 | if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; |
1045 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
1644 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now)); |
1046 | downheap ((WT *)periodics, periodiccnt, 0); |
1645 | downheap (periodics, periodiccnt, HEAP0); |
1047 | } |
1646 | } |
1048 | else |
1647 | else |
1049 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1648 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1050 | |
1649 | |
1051 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
1650 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
1052 | } |
1651 | } |
1053 | } |
1652 | } |
1054 | |
1653 | |
1055 | static void |
1654 | static void noinline |
1056 | periodics_reschedule (EV_P) |
1655 | periodics_reschedule (EV_P) |
1057 | { |
1656 | { |
1058 | int i; |
1657 | int i; |
1059 | |
1658 | |
1060 | /* adjust periodics after time jump */ |
1659 | /* adjust periodics after time jump */ |
1061 | for (i = 0; i < periodiccnt; ++i) |
1660 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
1062 | { |
1661 | { |
1063 | struct ev_periodic *w = periodics [i]; |
1662 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
1064 | |
1663 | |
1065 | if (w->reschedule_cb) |
1664 | if (w->reschedule_cb) |
1066 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
1665 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1067 | else if (w->interval) |
1666 | else if (w->interval) |
1068 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
1667 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1069 | } |
1668 | } |
1070 | |
1669 | |
1071 | /* now rebuild the heap */ |
1670 | /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */ |
1072 | for (i = periodiccnt >> 1; i--; ) |
1671 | for (i = periodiccnt >> 1; --i; ) |
1073 | downheap ((WT *)periodics, periodiccnt, i); |
1672 | downheap (periodics, periodiccnt, i + HEAP0); |
1074 | } |
1673 | } |
1075 | #endif |
1674 | #endif |
1076 | |
1675 | |
1077 | inline int |
1676 | void inline_speed |
1078 | time_update_monotonic (EV_P) |
1677 | time_update (EV_P_ ev_tstamp max_block) |
1079 | { |
1678 | { |
|
|
1679 | int i; |
|
|
1680 | |
|
|
1681 | #if EV_USE_MONOTONIC |
|
|
1682 | if (expect_true (have_monotonic)) |
|
|
1683 | { |
|
|
1684 | ev_tstamp odiff = rtmn_diff; |
|
|
1685 | |
1080 | mn_now = get_clock (); |
1686 | mn_now = get_clock (); |
1081 | |
1687 | |
|
|
1688 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1689 | /* interpolate in the meantime */ |
1082 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1690 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1083 | { |
1691 | { |
1084 | ev_rt_now = rtmn_diff + mn_now; |
1692 | ev_rt_now = rtmn_diff + mn_now; |
1085 | return 0; |
1693 | return; |
1086 | } |
1694 | } |
1087 | else |
1695 | |
1088 | { |
|
|
1089 | now_floor = mn_now; |
1696 | now_floor = mn_now; |
1090 | ev_rt_now = ev_time (); |
1697 | ev_rt_now = ev_time (); |
1091 | return 1; |
|
|
1092 | } |
|
|
1093 | } |
|
|
1094 | |
1698 | |
1095 | static void |
1699 | /* loop a few times, before making important decisions. |
1096 | time_update (EV_P) |
1700 | * on the choice of "4": one iteration isn't enough, |
1097 | { |
1701 | * in case we get preempted during the calls to |
1098 | int i; |
1702 | * ev_time and get_clock. a second call is almost guaranteed |
1099 | |
1703 | * to succeed in that case, though. and looping a few more times |
1100 | #if EV_USE_MONOTONIC |
1704 | * doesn't hurt either as we only do this on time-jumps or |
1101 | if (expect_true (have_monotonic)) |
1705 | * in the unlikely event of having been preempted here. |
1102 | { |
1706 | */ |
1103 | if (time_update_monotonic (EV_A)) |
1707 | for (i = 4; --i; ) |
1104 | { |
1708 | { |
1105 | ev_tstamp odiff = rtmn_diff; |
1709 | rtmn_diff = ev_rt_now - mn_now; |
1106 | |
1710 | |
1107 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1711 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
1712 | return; /* all is well */ |
|
|
1713 | |
|
|
1714 | ev_rt_now = ev_time (); |
|
|
1715 | mn_now = get_clock (); |
|
|
1716 | now_floor = mn_now; |
|
|
1717 | } |
|
|
1718 | |
|
|
1719 | # if EV_PERIODIC_ENABLE |
|
|
1720 | periodics_reschedule (EV_A); |
|
|
1721 | # endif |
|
|
1722 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1723 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1724 | } |
|
|
1725 | else |
|
|
1726 | #endif |
|
|
1727 | { |
|
|
1728 | ev_rt_now = ev_time (); |
|
|
1729 | |
|
|
1730 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1731 | { |
|
|
1732 | #if EV_PERIODIC_ENABLE |
|
|
1733 | periodics_reschedule (EV_A); |
|
|
1734 | #endif |
|
|
1735 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1736 | for (i = 0; i < timercnt; ++i) |
1108 | { |
1737 | { |
1109 | rtmn_diff = ev_rt_now - mn_now; |
1738 | ANHE *he = timers + i + HEAP0; |
1110 | |
1739 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
1111 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
1740 | ANHE_at_set (*he); |
1112 | return; /* all is well */ |
|
|
1113 | |
|
|
1114 | ev_rt_now = ev_time (); |
|
|
1115 | mn_now = get_clock (); |
|
|
1116 | now_floor = mn_now; |
|
|
1117 | } |
1741 | } |
1118 | |
|
|
1119 | # if EV_PERIODICS |
|
|
1120 | periodics_reschedule (EV_A); |
|
|
1121 | # endif |
|
|
1122 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1123 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1124 | } |
1742 | } |
1125 | } |
|
|
1126 | else |
|
|
1127 | #endif |
|
|
1128 | { |
|
|
1129 | ev_rt_now = ev_time (); |
|
|
1130 | |
|
|
1131 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1132 | { |
|
|
1133 | #if EV_PERIODICS |
|
|
1134 | periodics_reschedule (EV_A); |
|
|
1135 | #endif |
|
|
1136 | |
|
|
1137 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1138 | for (i = 0; i < timercnt; ++i) |
|
|
1139 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1140 | } |
|
|
1141 | |
1743 | |
1142 | mn_now = ev_rt_now; |
1744 | mn_now = ev_rt_now; |
1143 | } |
1745 | } |
1144 | } |
1746 | } |
1145 | |
1747 | |
… | |
… | |
1158 | static int loop_done; |
1760 | static int loop_done; |
1159 | |
1761 | |
1160 | void |
1762 | void |
1161 | ev_loop (EV_P_ int flags) |
1763 | ev_loop (EV_P_ int flags) |
1162 | { |
1764 | { |
1163 | double block; |
1765 | loop_done = EVUNLOOP_CANCEL; |
1164 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
1165 | |
1766 | |
1166 | while (activecnt) |
1767 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
1768 | |
|
|
1769 | do |
1167 | { |
1770 | { |
|
|
1771 | #ifndef _WIN32 |
|
|
1772 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1773 | if (expect_false (getpid () != curpid)) |
|
|
1774 | { |
|
|
1775 | curpid = getpid (); |
|
|
1776 | postfork = 1; |
|
|
1777 | } |
|
|
1778 | #endif |
|
|
1779 | |
|
|
1780 | #if EV_FORK_ENABLE |
|
|
1781 | /* we might have forked, so queue fork handlers */ |
|
|
1782 | if (expect_false (postfork)) |
|
|
1783 | if (forkcnt) |
|
|
1784 | { |
|
|
1785 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1786 | call_pending (EV_A); |
|
|
1787 | } |
|
|
1788 | #endif |
|
|
1789 | |
1168 | /* queue check watchers (and execute them) */ |
1790 | /* queue prepare watchers (and execute them) */ |
1169 | if (expect_false (preparecnt)) |
1791 | if (expect_false (preparecnt)) |
1170 | { |
1792 | { |
1171 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1793 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1172 | call_pending (EV_A); |
1794 | call_pending (EV_A); |
1173 | } |
1795 | } |
1174 | |
1796 | |
|
|
1797 | if (expect_false (!activecnt)) |
|
|
1798 | break; |
|
|
1799 | |
1175 | /* we might have forked, so reify kernel state if necessary */ |
1800 | /* we might have forked, so reify kernel state if necessary */ |
1176 | if (expect_false (postfork)) |
1801 | if (expect_false (postfork)) |
1177 | loop_fork (EV_A); |
1802 | loop_fork (EV_A); |
1178 | |
1803 | |
1179 | /* update fd-related kernel structures */ |
1804 | /* update fd-related kernel structures */ |
1180 | fd_reify (EV_A); |
1805 | fd_reify (EV_A); |
1181 | |
1806 | |
1182 | /* calculate blocking time */ |
1807 | /* calculate blocking time */ |
|
|
1808 | { |
|
|
1809 | ev_tstamp waittime = 0.; |
|
|
1810 | ev_tstamp sleeptime = 0.; |
1183 | |
1811 | |
1184 | /* we only need this for !monotonic clock or timers, but as we basically |
1812 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1185 | always have timers, we just calculate it always */ |
|
|
1186 | #if EV_USE_MONOTONIC |
|
|
1187 | if (expect_true (have_monotonic)) |
|
|
1188 | time_update_monotonic (EV_A); |
|
|
1189 | else |
|
|
1190 | #endif |
|
|
1191 | { |
1813 | { |
1192 | ev_rt_now = ev_time (); |
1814 | /* update time to cancel out callback processing overhead */ |
1193 | mn_now = ev_rt_now; |
1815 | time_update (EV_A_ 1e100); |
1194 | } |
|
|
1195 | |
1816 | |
1196 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
1197 | block = 0.; |
|
|
1198 | else |
|
|
1199 | { |
|
|
1200 | block = MAX_BLOCKTIME; |
1817 | waittime = MAX_BLOCKTIME; |
1201 | |
1818 | |
1202 | if (timercnt) |
1819 | if (timercnt) |
1203 | { |
1820 | { |
1204 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
1821 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1205 | if (block > to) block = to; |
1822 | if (waittime > to) waittime = to; |
1206 | } |
1823 | } |
1207 | |
1824 | |
1208 | #if EV_PERIODICS |
1825 | #if EV_PERIODIC_ENABLE |
1209 | if (periodiccnt) |
1826 | if (periodiccnt) |
1210 | { |
1827 | { |
1211 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
1828 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1212 | if (block > to) block = to; |
1829 | if (waittime > to) waittime = to; |
1213 | } |
1830 | } |
1214 | #endif |
1831 | #endif |
1215 | |
1832 | |
1216 | if (block < 0.) block = 0.; |
1833 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1834 | waittime = timeout_blocktime; |
|
|
1835 | |
|
|
1836 | sleeptime = waittime - backend_fudge; |
|
|
1837 | |
|
|
1838 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1839 | sleeptime = io_blocktime; |
|
|
1840 | |
|
|
1841 | if (sleeptime) |
|
|
1842 | { |
|
|
1843 | ev_sleep (sleeptime); |
|
|
1844 | waittime -= sleeptime; |
|
|
1845 | } |
1217 | } |
1846 | } |
1218 | |
1847 | |
1219 | method_poll (EV_A_ block); |
1848 | ++loop_count; |
|
|
1849 | backend_poll (EV_A_ waittime); |
1220 | |
1850 | |
1221 | /* update ev_rt_now, do magic */ |
1851 | /* update ev_rt_now, do magic */ |
1222 | time_update (EV_A); |
1852 | time_update (EV_A_ waittime + sleeptime); |
|
|
1853 | } |
1223 | |
1854 | |
1224 | /* queue pending timers and reschedule them */ |
1855 | /* queue pending timers and reschedule them */ |
1225 | timers_reify (EV_A); /* relative timers called last */ |
1856 | timers_reify (EV_A); /* relative timers called last */ |
1226 | #if EV_PERIODICS |
1857 | #if EV_PERIODIC_ENABLE |
1227 | periodics_reify (EV_A); /* absolute timers called first */ |
1858 | periodics_reify (EV_A); /* absolute timers called first */ |
1228 | #endif |
1859 | #endif |
1229 | |
1860 | |
|
|
1861 | #if EV_IDLE_ENABLE |
1230 | /* queue idle watchers unless io or timers are pending */ |
1862 | /* queue idle watchers unless other events are pending */ |
1231 | if (idlecnt && !any_pending (EV_A)) |
1863 | idle_reify (EV_A); |
1232 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
1864 | #endif |
1233 | |
1865 | |
1234 | /* queue check watchers, to be executed first */ |
1866 | /* queue check watchers, to be executed first */ |
1235 | if (checkcnt) |
1867 | if (expect_false (checkcnt)) |
1236 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1868 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1237 | |
1869 | |
1238 | call_pending (EV_A); |
1870 | call_pending (EV_A); |
1239 | |
|
|
1240 | if (loop_done) |
|
|
1241 | break; |
|
|
1242 | } |
1871 | } |
|
|
1872 | while (expect_true ( |
|
|
1873 | activecnt |
|
|
1874 | && !loop_done |
|
|
1875 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1876 | )); |
1243 | |
1877 | |
1244 | if (loop_done != 2) |
1878 | if (loop_done == EVUNLOOP_ONE) |
1245 | loop_done = 0; |
1879 | loop_done = EVUNLOOP_CANCEL; |
1246 | } |
1880 | } |
1247 | |
1881 | |
1248 | void |
1882 | void |
1249 | ev_unloop (EV_P_ int how) |
1883 | ev_unloop (EV_P_ int how) |
1250 | { |
1884 | { |
1251 | loop_done = how; |
1885 | loop_done = how; |
1252 | } |
1886 | } |
1253 | |
1887 | |
1254 | /*****************************************************************************/ |
1888 | /*****************************************************************************/ |
1255 | |
1889 | |
1256 | inline void |
1890 | void inline_size |
1257 | wlist_add (WL *head, WL elem) |
1891 | wlist_add (WL *head, WL elem) |
1258 | { |
1892 | { |
1259 | elem->next = *head; |
1893 | elem->next = *head; |
1260 | *head = elem; |
1894 | *head = elem; |
1261 | } |
1895 | } |
1262 | |
1896 | |
1263 | inline void |
1897 | void inline_size |
1264 | wlist_del (WL *head, WL elem) |
1898 | wlist_del (WL *head, WL elem) |
1265 | { |
1899 | { |
1266 | while (*head) |
1900 | while (*head) |
1267 | { |
1901 | { |
1268 | if (*head == elem) |
1902 | if (*head == elem) |
… | |
… | |
1273 | |
1907 | |
1274 | head = &(*head)->next; |
1908 | head = &(*head)->next; |
1275 | } |
1909 | } |
1276 | } |
1910 | } |
1277 | |
1911 | |
1278 | inline void |
1912 | void inline_speed |
1279 | ev_clear_pending (EV_P_ W w) |
1913 | clear_pending (EV_P_ W w) |
1280 | { |
1914 | { |
1281 | if (w->pending) |
1915 | if (w->pending) |
1282 | { |
1916 | { |
1283 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1917 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1284 | w->pending = 0; |
1918 | w->pending = 0; |
1285 | } |
1919 | } |
1286 | } |
1920 | } |
1287 | |
1921 | |
1288 | inline void |
1922 | int |
|
|
1923 | ev_clear_pending (EV_P_ void *w) |
|
|
1924 | { |
|
|
1925 | W w_ = (W)w; |
|
|
1926 | int pending = w_->pending; |
|
|
1927 | |
|
|
1928 | if (expect_true (pending)) |
|
|
1929 | { |
|
|
1930 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1931 | w_->pending = 0; |
|
|
1932 | p->w = 0; |
|
|
1933 | return p->events; |
|
|
1934 | } |
|
|
1935 | else |
|
|
1936 | return 0; |
|
|
1937 | } |
|
|
1938 | |
|
|
1939 | void inline_size |
|
|
1940 | pri_adjust (EV_P_ W w) |
|
|
1941 | { |
|
|
1942 | int pri = w->priority; |
|
|
1943 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1944 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1945 | w->priority = pri; |
|
|
1946 | } |
|
|
1947 | |
|
|
1948 | void inline_speed |
1289 | ev_start (EV_P_ W w, int active) |
1949 | ev_start (EV_P_ W w, int active) |
1290 | { |
1950 | { |
1291 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
1951 | pri_adjust (EV_A_ w); |
1292 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1293 | |
|
|
1294 | w->active = active; |
1952 | w->active = active; |
1295 | ev_ref (EV_A); |
1953 | ev_ref (EV_A); |
1296 | } |
1954 | } |
1297 | |
1955 | |
1298 | inline void |
1956 | void inline_size |
1299 | ev_stop (EV_P_ W w) |
1957 | ev_stop (EV_P_ W w) |
1300 | { |
1958 | { |
1301 | ev_unref (EV_A); |
1959 | ev_unref (EV_A); |
1302 | w->active = 0; |
1960 | w->active = 0; |
1303 | } |
1961 | } |
1304 | |
1962 | |
1305 | /*****************************************************************************/ |
1963 | /*****************************************************************************/ |
1306 | |
1964 | |
1307 | void |
1965 | void noinline |
1308 | ev_io_start (EV_P_ struct ev_io *w) |
1966 | ev_io_start (EV_P_ ev_io *w) |
1309 | { |
1967 | { |
1310 | int fd = w->fd; |
1968 | int fd = w->fd; |
1311 | |
1969 | |
1312 | if (ev_is_active (w)) |
1970 | if (expect_false (ev_is_active (w))) |
1313 | return; |
1971 | return; |
1314 | |
1972 | |
1315 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1973 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1316 | |
1974 | |
1317 | ev_start (EV_A_ (W)w, 1); |
1975 | ev_start (EV_A_ (W)w, 1); |
1318 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1976 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1319 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1977 | wlist_add (&anfds[fd].head, (WL)w); |
1320 | |
1978 | |
1321 | fd_change (EV_A_ fd); |
1979 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1980 | w->events &= ~EV_IOFDSET; |
1322 | } |
1981 | } |
1323 | |
1982 | |
1324 | void |
1983 | void noinline |
1325 | ev_io_stop (EV_P_ struct ev_io *w) |
1984 | ev_io_stop (EV_P_ ev_io *w) |
1326 | { |
1985 | { |
1327 | ev_clear_pending (EV_A_ (W)w); |
1986 | clear_pending (EV_A_ (W)w); |
1328 | if (!ev_is_active (w)) |
1987 | if (expect_false (!ev_is_active (w))) |
1329 | return; |
1988 | return; |
1330 | |
1989 | |
1331 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1990 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1332 | |
1991 | |
1333 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1992 | wlist_del (&anfds[w->fd].head, (WL)w); |
1334 | ev_stop (EV_A_ (W)w); |
1993 | ev_stop (EV_A_ (W)w); |
1335 | |
1994 | |
1336 | fd_change (EV_A_ w->fd); |
1995 | fd_change (EV_A_ w->fd, 1); |
1337 | } |
1996 | } |
1338 | |
1997 | |
1339 | void |
1998 | void noinline |
1340 | ev_timer_start (EV_P_ struct ev_timer *w) |
1999 | ev_timer_start (EV_P_ ev_timer *w) |
1341 | { |
2000 | { |
1342 | if (ev_is_active (w)) |
2001 | if (expect_false (ev_is_active (w))) |
1343 | return; |
2002 | return; |
1344 | |
2003 | |
1345 | ((WT)w)->at += mn_now; |
2004 | ev_at (w) += mn_now; |
1346 | |
2005 | |
1347 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2006 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1348 | |
2007 | |
1349 | ev_start (EV_A_ (W)w, ++timercnt); |
2008 | ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
1350 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
2009 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1351 | timers [timercnt - 1] = w; |
2010 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1352 | upheap ((WT *)timers, timercnt - 1); |
2011 | ANHE_at_set (timers [ev_active (w)]); |
|
|
2012 | upheap (timers, ev_active (w)); |
1353 | |
2013 | |
1354 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2014 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ |
1355 | } |
2015 | } |
1356 | |
2016 | |
1357 | void |
2017 | void noinline |
1358 | ev_timer_stop (EV_P_ struct ev_timer *w) |
2018 | ev_timer_stop (EV_P_ ev_timer *w) |
1359 | { |
2019 | { |
1360 | ev_clear_pending (EV_A_ (W)w); |
2020 | clear_pending (EV_A_ (W)w); |
1361 | if (!ev_is_active (w)) |
2021 | if (expect_false (!ev_is_active (w))) |
1362 | return; |
2022 | return; |
1363 | |
2023 | |
|
|
2024 | { |
|
|
2025 | int active = ev_active (w); |
|
|
2026 | |
1364 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2027 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
1365 | |
2028 | |
1366 | if (((W)w)->active < timercnt--) |
2029 | if (expect_true (active < timercnt + HEAP0 - 1)) |
1367 | { |
2030 | { |
1368 | timers [((W)w)->active - 1] = timers [timercnt]; |
2031 | timers [active] = timers [timercnt + HEAP0 - 1]; |
1369 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2032 | adjustheap (timers, timercnt, active); |
1370 | } |
2033 | } |
1371 | |
2034 | |
1372 | ((WT)w)->at -= mn_now; |
2035 | --timercnt; |
|
|
2036 | } |
|
|
2037 | |
|
|
2038 | ev_at (w) -= mn_now; |
1373 | |
2039 | |
1374 | ev_stop (EV_A_ (W)w); |
2040 | ev_stop (EV_A_ (W)w); |
1375 | } |
2041 | } |
1376 | |
2042 | |
1377 | void |
2043 | void noinline |
1378 | ev_timer_again (EV_P_ struct ev_timer *w) |
2044 | ev_timer_again (EV_P_ ev_timer *w) |
1379 | { |
2045 | { |
1380 | if (ev_is_active (w)) |
2046 | if (ev_is_active (w)) |
1381 | { |
2047 | { |
1382 | if (w->repeat) |
2048 | if (w->repeat) |
1383 | { |
2049 | { |
1384 | ((WT)w)->at = mn_now + w->repeat; |
2050 | ev_at (w) = mn_now + w->repeat; |
|
|
2051 | ANHE_at_set (timers [ev_active (w)]); |
1385 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2052 | adjustheap (timers, timercnt, ev_active (w)); |
1386 | } |
2053 | } |
1387 | else |
2054 | else |
1388 | ev_timer_stop (EV_A_ w); |
2055 | ev_timer_stop (EV_A_ w); |
1389 | } |
2056 | } |
1390 | else if (w->repeat) |
2057 | else if (w->repeat) |
1391 | { |
2058 | { |
1392 | w->at = w->repeat; |
2059 | ev_at (w) = w->repeat; |
1393 | ev_timer_start (EV_A_ w); |
2060 | ev_timer_start (EV_A_ w); |
1394 | } |
2061 | } |
1395 | } |
2062 | } |
1396 | |
2063 | |
1397 | #if EV_PERIODICS |
2064 | #if EV_PERIODIC_ENABLE |
1398 | void |
2065 | void noinline |
1399 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2066 | ev_periodic_start (EV_P_ ev_periodic *w) |
1400 | { |
2067 | { |
1401 | if (ev_is_active (w)) |
2068 | if (expect_false (ev_is_active (w))) |
1402 | return; |
2069 | return; |
1403 | |
2070 | |
1404 | if (w->reschedule_cb) |
2071 | if (w->reschedule_cb) |
1405 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2072 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1406 | else if (w->interval) |
2073 | else if (w->interval) |
1407 | { |
2074 | { |
1408 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2075 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1409 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2076 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1410 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2077 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1411 | } |
2078 | } |
|
|
2079 | else |
|
|
2080 | ev_at (w) = w->offset; |
1412 | |
2081 | |
1413 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2082 | ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
1414 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
2083 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1415 | periodics [periodiccnt - 1] = w; |
2084 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1416 | upheap ((WT *)periodics, periodiccnt - 1); |
2085 | upheap (periodics, ev_active (w)); |
1417 | |
2086 | |
1418 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2087 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1419 | } |
2088 | } |
1420 | |
2089 | |
1421 | void |
2090 | void noinline |
1422 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2091 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1423 | { |
2092 | { |
1424 | ev_clear_pending (EV_A_ (W)w); |
2093 | clear_pending (EV_A_ (W)w); |
1425 | if (!ev_is_active (w)) |
2094 | if (expect_false (!ev_is_active (w))) |
1426 | return; |
2095 | return; |
1427 | |
2096 | |
|
|
2097 | { |
|
|
2098 | int active = ev_active (w); |
|
|
2099 | |
1428 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2100 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1429 | |
2101 | |
1430 | if (((W)w)->active < periodiccnt--) |
2102 | if (expect_true (active < periodiccnt + HEAP0 - 1)) |
1431 | { |
2103 | { |
1432 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2104 | periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
1433 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2105 | adjustheap (periodics, periodiccnt, active); |
1434 | } |
2106 | } |
|
|
2107 | |
|
|
2108 | --periodiccnt; |
|
|
2109 | } |
1435 | |
2110 | |
1436 | ev_stop (EV_A_ (W)w); |
2111 | ev_stop (EV_A_ (W)w); |
1437 | } |
2112 | } |
1438 | |
2113 | |
1439 | void |
2114 | void noinline |
1440 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
2115 | ev_periodic_again (EV_P_ ev_periodic *w) |
1441 | { |
2116 | { |
1442 | /* TODO: use adjustheap and recalculation */ |
2117 | /* TODO: use adjustheap and recalculation */ |
1443 | ev_periodic_stop (EV_A_ w); |
2118 | ev_periodic_stop (EV_A_ w); |
1444 | ev_periodic_start (EV_A_ w); |
2119 | ev_periodic_start (EV_A_ w); |
1445 | } |
2120 | } |
1446 | #endif |
2121 | #endif |
1447 | |
2122 | |
1448 | void |
|
|
1449 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1450 | { |
|
|
1451 | if (ev_is_active (w)) |
|
|
1452 | return; |
|
|
1453 | |
|
|
1454 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1455 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1456 | idles [idlecnt - 1] = w; |
|
|
1457 | } |
|
|
1458 | |
|
|
1459 | void |
|
|
1460 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1461 | { |
|
|
1462 | ev_clear_pending (EV_A_ (W)w); |
|
|
1463 | if (!ev_is_active (w)) |
|
|
1464 | return; |
|
|
1465 | |
|
|
1466 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1467 | ev_stop (EV_A_ (W)w); |
|
|
1468 | } |
|
|
1469 | |
|
|
1470 | void |
|
|
1471 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1472 | { |
|
|
1473 | if (ev_is_active (w)) |
|
|
1474 | return; |
|
|
1475 | |
|
|
1476 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1477 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1478 | prepares [preparecnt - 1] = w; |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | void |
|
|
1482 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1483 | { |
|
|
1484 | ev_clear_pending (EV_A_ (W)w); |
|
|
1485 | if (!ev_is_active (w)) |
|
|
1486 | return; |
|
|
1487 | |
|
|
1488 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1489 | ev_stop (EV_A_ (W)w); |
|
|
1490 | } |
|
|
1491 | |
|
|
1492 | void |
|
|
1493 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1494 | { |
|
|
1495 | if (ev_is_active (w)) |
|
|
1496 | return; |
|
|
1497 | |
|
|
1498 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1499 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1500 | checks [checkcnt - 1] = w; |
|
|
1501 | } |
|
|
1502 | |
|
|
1503 | void |
|
|
1504 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1505 | { |
|
|
1506 | ev_clear_pending (EV_A_ (W)w); |
|
|
1507 | if (!ev_is_active (w)) |
|
|
1508 | return; |
|
|
1509 | |
|
|
1510 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1511 | ev_stop (EV_A_ (W)w); |
|
|
1512 | } |
|
|
1513 | |
|
|
1514 | #ifndef SA_RESTART |
2123 | #ifndef SA_RESTART |
1515 | # define SA_RESTART 0 |
2124 | # define SA_RESTART 0 |
1516 | #endif |
2125 | #endif |
1517 | |
2126 | |
1518 | void |
2127 | void noinline |
1519 | ev_signal_start (EV_P_ struct ev_signal *w) |
2128 | ev_signal_start (EV_P_ ev_signal *w) |
1520 | { |
2129 | { |
1521 | #if EV_MULTIPLICITY |
2130 | #if EV_MULTIPLICITY |
1522 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2131 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1523 | #endif |
2132 | #endif |
1524 | if (ev_is_active (w)) |
2133 | if (expect_false (ev_is_active (w))) |
1525 | return; |
2134 | return; |
1526 | |
2135 | |
1527 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2136 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1528 | |
2137 | |
|
|
2138 | evpipe_init (EV_A); |
|
|
2139 | |
|
|
2140 | { |
|
|
2141 | #ifndef _WIN32 |
|
|
2142 | sigset_t full, prev; |
|
|
2143 | sigfillset (&full); |
|
|
2144 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2145 | #endif |
|
|
2146 | |
|
|
2147 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2148 | |
|
|
2149 | #ifndef _WIN32 |
|
|
2150 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2151 | #endif |
|
|
2152 | } |
|
|
2153 | |
1529 | ev_start (EV_A_ (W)w, 1); |
2154 | ev_start (EV_A_ (W)w, 1); |
1530 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1531 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2155 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1532 | |
2156 | |
1533 | if (!((WL)w)->next) |
2157 | if (!((WL)w)->next) |
1534 | { |
2158 | { |
1535 | #if _WIN32 |
2159 | #if _WIN32 |
1536 | signal (w->signum, sighandler); |
2160 | signal (w->signum, ev_sighandler); |
1537 | #else |
2161 | #else |
1538 | struct sigaction sa; |
2162 | struct sigaction sa; |
1539 | sa.sa_handler = sighandler; |
2163 | sa.sa_handler = ev_sighandler; |
1540 | sigfillset (&sa.sa_mask); |
2164 | sigfillset (&sa.sa_mask); |
1541 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2165 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1542 | sigaction (w->signum, &sa, 0); |
2166 | sigaction (w->signum, &sa, 0); |
1543 | #endif |
2167 | #endif |
1544 | } |
2168 | } |
1545 | } |
2169 | } |
1546 | |
2170 | |
1547 | void |
2171 | void noinline |
1548 | ev_signal_stop (EV_P_ struct ev_signal *w) |
2172 | ev_signal_stop (EV_P_ ev_signal *w) |
1549 | { |
2173 | { |
1550 | ev_clear_pending (EV_A_ (W)w); |
2174 | clear_pending (EV_A_ (W)w); |
1551 | if (!ev_is_active (w)) |
2175 | if (expect_false (!ev_is_active (w))) |
1552 | return; |
2176 | return; |
1553 | |
2177 | |
1554 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2178 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1555 | ev_stop (EV_A_ (W)w); |
2179 | ev_stop (EV_A_ (W)w); |
1556 | |
2180 | |
1557 | if (!signals [w->signum - 1].head) |
2181 | if (!signals [w->signum - 1].head) |
1558 | signal (w->signum, SIG_DFL); |
2182 | signal (w->signum, SIG_DFL); |
1559 | } |
2183 | } |
1560 | |
2184 | |
1561 | void |
2185 | void |
1562 | ev_child_start (EV_P_ struct ev_child *w) |
2186 | ev_child_start (EV_P_ ev_child *w) |
1563 | { |
2187 | { |
1564 | #if EV_MULTIPLICITY |
2188 | #if EV_MULTIPLICITY |
1565 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2189 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1566 | #endif |
2190 | #endif |
1567 | if (ev_is_active (w)) |
2191 | if (expect_false (ev_is_active (w))) |
1568 | return; |
2192 | return; |
1569 | |
2193 | |
1570 | ev_start (EV_A_ (W)w, 1); |
2194 | ev_start (EV_A_ (W)w, 1); |
1571 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2195 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1572 | } |
2196 | } |
1573 | |
2197 | |
1574 | void |
2198 | void |
1575 | ev_child_stop (EV_P_ struct ev_child *w) |
2199 | ev_child_stop (EV_P_ ev_child *w) |
1576 | { |
2200 | { |
1577 | ev_clear_pending (EV_A_ (W)w); |
2201 | clear_pending (EV_A_ (W)w); |
1578 | if (!ev_is_active (w)) |
2202 | if (expect_false (!ev_is_active (w))) |
1579 | return; |
2203 | return; |
1580 | |
2204 | |
1581 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2205 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1582 | ev_stop (EV_A_ (W)w); |
2206 | ev_stop (EV_A_ (W)w); |
1583 | } |
2207 | } |
1584 | |
2208 | |
|
|
2209 | #if EV_STAT_ENABLE |
|
|
2210 | |
|
|
2211 | # ifdef _WIN32 |
|
|
2212 | # undef lstat |
|
|
2213 | # define lstat(a,b) _stati64 (a,b) |
|
|
2214 | # endif |
|
|
2215 | |
|
|
2216 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2217 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2218 | |
|
|
2219 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2220 | |
|
|
2221 | #if EV_USE_INOTIFY |
|
|
2222 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2223 | |
|
|
2224 | static void noinline |
|
|
2225 | infy_add (EV_P_ ev_stat *w) |
|
|
2226 | { |
|
|
2227 | 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); |
|
|
2228 | |
|
|
2229 | if (w->wd < 0) |
|
|
2230 | { |
|
|
2231 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2232 | |
|
|
2233 | /* monitor some parent directory for speedup hints */ |
|
|
2234 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2235 | /* but an efficiency issue only */ |
|
|
2236 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2237 | { |
|
|
2238 | char path [4096]; |
|
|
2239 | strcpy (path, w->path); |
|
|
2240 | |
|
|
2241 | do |
|
|
2242 | { |
|
|
2243 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2244 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2245 | |
|
|
2246 | char *pend = strrchr (path, '/'); |
|
|
2247 | |
|
|
2248 | if (!pend) |
|
|
2249 | break; /* whoops, no '/', complain to your admin */ |
|
|
2250 | |
|
|
2251 | *pend = 0; |
|
|
2252 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2253 | } |
|
|
2254 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2255 | } |
|
|
2256 | } |
|
|
2257 | else |
|
|
2258 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2259 | |
|
|
2260 | if (w->wd >= 0) |
|
|
2261 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2262 | } |
|
|
2263 | |
|
|
2264 | static void noinline |
|
|
2265 | infy_del (EV_P_ ev_stat *w) |
|
|
2266 | { |
|
|
2267 | int slot; |
|
|
2268 | int wd = w->wd; |
|
|
2269 | |
|
|
2270 | if (wd < 0) |
|
|
2271 | return; |
|
|
2272 | |
|
|
2273 | w->wd = -2; |
|
|
2274 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2275 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2276 | |
|
|
2277 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2278 | inotify_rm_watch (fs_fd, wd); |
|
|
2279 | } |
|
|
2280 | |
|
|
2281 | static void noinline |
|
|
2282 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2283 | { |
|
|
2284 | if (slot < 0) |
|
|
2285 | /* overflow, need to check for all hahs slots */ |
|
|
2286 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2287 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2288 | else |
|
|
2289 | { |
|
|
2290 | WL w_; |
|
|
2291 | |
|
|
2292 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2293 | { |
|
|
2294 | ev_stat *w = (ev_stat *)w_; |
|
|
2295 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2296 | |
|
|
2297 | if (w->wd == wd || wd == -1) |
|
|
2298 | { |
|
|
2299 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2300 | { |
|
|
2301 | w->wd = -1; |
|
|
2302 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2303 | } |
|
|
2304 | |
|
|
2305 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2306 | } |
|
|
2307 | } |
|
|
2308 | } |
|
|
2309 | } |
|
|
2310 | |
|
|
2311 | static void |
|
|
2312 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2313 | { |
|
|
2314 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2315 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2316 | int ofs; |
|
|
2317 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2318 | |
|
|
2319 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2320 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2321 | } |
|
|
2322 | |
|
|
2323 | void inline_size |
|
|
2324 | infy_init (EV_P) |
|
|
2325 | { |
|
|
2326 | if (fs_fd != -2) |
|
|
2327 | return; |
|
|
2328 | |
|
|
2329 | fs_fd = inotify_init (); |
|
|
2330 | |
|
|
2331 | if (fs_fd >= 0) |
|
|
2332 | { |
|
|
2333 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2334 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2335 | ev_io_start (EV_A_ &fs_w); |
|
|
2336 | } |
|
|
2337 | } |
|
|
2338 | |
|
|
2339 | void inline_size |
|
|
2340 | infy_fork (EV_P) |
|
|
2341 | { |
|
|
2342 | int slot; |
|
|
2343 | |
|
|
2344 | if (fs_fd < 0) |
|
|
2345 | return; |
|
|
2346 | |
|
|
2347 | close (fs_fd); |
|
|
2348 | fs_fd = inotify_init (); |
|
|
2349 | |
|
|
2350 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2351 | { |
|
|
2352 | WL w_ = fs_hash [slot].head; |
|
|
2353 | fs_hash [slot].head = 0; |
|
|
2354 | |
|
|
2355 | while (w_) |
|
|
2356 | { |
|
|
2357 | ev_stat *w = (ev_stat *)w_; |
|
|
2358 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2359 | |
|
|
2360 | w->wd = -1; |
|
|
2361 | |
|
|
2362 | if (fs_fd >= 0) |
|
|
2363 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2364 | else |
|
|
2365 | ev_timer_start (EV_A_ &w->timer); |
|
|
2366 | } |
|
|
2367 | |
|
|
2368 | } |
|
|
2369 | } |
|
|
2370 | |
|
|
2371 | #endif |
|
|
2372 | |
|
|
2373 | void |
|
|
2374 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2375 | { |
|
|
2376 | if (lstat (w->path, &w->attr) < 0) |
|
|
2377 | w->attr.st_nlink = 0; |
|
|
2378 | else if (!w->attr.st_nlink) |
|
|
2379 | w->attr.st_nlink = 1; |
|
|
2380 | } |
|
|
2381 | |
|
|
2382 | static void noinline |
|
|
2383 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2384 | { |
|
|
2385 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2386 | |
|
|
2387 | /* we copy this here each the time so that */ |
|
|
2388 | /* prev has the old value when the callback gets invoked */ |
|
|
2389 | w->prev = w->attr; |
|
|
2390 | ev_stat_stat (EV_A_ w); |
|
|
2391 | |
|
|
2392 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2393 | if ( |
|
|
2394 | w->prev.st_dev != w->attr.st_dev |
|
|
2395 | || w->prev.st_ino != w->attr.st_ino |
|
|
2396 | || w->prev.st_mode != w->attr.st_mode |
|
|
2397 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2398 | || w->prev.st_uid != w->attr.st_uid |
|
|
2399 | || w->prev.st_gid != w->attr.st_gid |
|
|
2400 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2401 | || w->prev.st_size != w->attr.st_size |
|
|
2402 | || w->prev.st_atime != w->attr.st_atime |
|
|
2403 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2404 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2405 | ) { |
|
|
2406 | #if EV_USE_INOTIFY |
|
|
2407 | infy_del (EV_A_ w); |
|
|
2408 | infy_add (EV_A_ w); |
|
|
2409 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2410 | #endif |
|
|
2411 | |
|
|
2412 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2413 | } |
|
|
2414 | } |
|
|
2415 | |
|
|
2416 | void |
|
|
2417 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2418 | { |
|
|
2419 | if (expect_false (ev_is_active (w))) |
|
|
2420 | return; |
|
|
2421 | |
|
|
2422 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2423 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2424 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2425 | |
|
|
2426 | ev_stat_stat (EV_A_ w); |
|
|
2427 | |
|
|
2428 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2429 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2430 | |
|
|
2431 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2432 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2433 | |
|
|
2434 | #if EV_USE_INOTIFY |
|
|
2435 | infy_init (EV_A); |
|
|
2436 | |
|
|
2437 | if (fs_fd >= 0) |
|
|
2438 | infy_add (EV_A_ w); |
|
|
2439 | else |
|
|
2440 | #endif |
|
|
2441 | ev_timer_start (EV_A_ &w->timer); |
|
|
2442 | |
|
|
2443 | ev_start (EV_A_ (W)w, 1); |
|
|
2444 | } |
|
|
2445 | |
|
|
2446 | void |
|
|
2447 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2448 | { |
|
|
2449 | clear_pending (EV_A_ (W)w); |
|
|
2450 | if (expect_false (!ev_is_active (w))) |
|
|
2451 | return; |
|
|
2452 | |
|
|
2453 | #if EV_USE_INOTIFY |
|
|
2454 | infy_del (EV_A_ w); |
|
|
2455 | #endif |
|
|
2456 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2457 | |
|
|
2458 | ev_stop (EV_A_ (W)w); |
|
|
2459 | } |
|
|
2460 | #endif |
|
|
2461 | |
|
|
2462 | #if EV_IDLE_ENABLE |
|
|
2463 | void |
|
|
2464 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2465 | { |
|
|
2466 | if (expect_false (ev_is_active (w))) |
|
|
2467 | return; |
|
|
2468 | |
|
|
2469 | pri_adjust (EV_A_ (W)w); |
|
|
2470 | |
|
|
2471 | { |
|
|
2472 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2473 | |
|
|
2474 | ++idleall; |
|
|
2475 | ev_start (EV_A_ (W)w, active); |
|
|
2476 | |
|
|
2477 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2478 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2479 | } |
|
|
2480 | } |
|
|
2481 | |
|
|
2482 | void |
|
|
2483 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2484 | { |
|
|
2485 | clear_pending (EV_A_ (W)w); |
|
|
2486 | if (expect_false (!ev_is_active (w))) |
|
|
2487 | return; |
|
|
2488 | |
|
|
2489 | { |
|
|
2490 | int active = ev_active (w); |
|
|
2491 | |
|
|
2492 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2493 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2494 | |
|
|
2495 | ev_stop (EV_A_ (W)w); |
|
|
2496 | --idleall; |
|
|
2497 | } |
|
|
2498 | } |
|
|
2499 | #endif |
|
|
2500 | |
|
|
2501 | void |
|
|
2502 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2503 | { |
|
|
2504 | if (expect_false (ev_is_active (w))) |
|
|
2505 | return; |
|
|
2506 | |
|
|
2507 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
2508 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
2509 | prepares [preparecnt - 1] = w; |
|
|
2510 | } |
|
|
2511 | |
|
|
2512 | void |
|
|
2513 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
2514 | { |
|
|
2515 | clear_pending (EV_A_ (W)w); |
|
|
2516 | if (expect_false (!ev_is_active (w))) |
|
|
2517 | return; |
|
|
2518 | |
|
|
2519 | { |
|
|
2520 | int active = ev_active (w); |
|
|
2521 | |
|
|
2522 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2523 | ev_active (prepares [active - 1]) = active; |
|
|
2524 | } |
|
|
2525 | |
|
|
2526 | ev_stop (EV_A_ (W)w); |
|
|
2527 | } |
|
|
2528 | |
|
|
2529 | void |
|
|
2530 | ev_check_start (EV_P_ ev_check *w) |
|
|
2531 | { |
|
|
2532 | if (expect_false (ev_is_active (w))) |
|
|
2533 | return; |
|
|
2534 | |
|
|
2535 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
2536 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
2537 | checks [checkcnt - 1] = w; |
|
|
2538 | } |
|
|
2539 | |
|
|
2540 | void |
|
|
2541 | ev_check_stop (EV_P_ ev_check *w) |
|
|
2542 | { |
|
|
2543 | clear_pending (EV_A_ (W)w); |
|
|
2544 | if (expect_false (!ev_is_active (w))) |
|
|
2545 | return; |
|
|
2546 | |
|
|
2547 | { |
|
|
2548 | int active = ev_active (w); |
|
|
2549 | |
|
|
2550 | checks [active - 1] = checks [--checkcnt]; |
|
|
2551 | ev_active (checks [active - 1]) = active; |
|
|
2552 | } |
|
|
2553 | |
|
|
2554 | ev_stop (EV_A_ (W)w); |
|
|
2555 | } |
|
|
2556 | |
|
|
2557 | #if EV_EMBED_ENABLE |
|
|
2558 | void noinline |
|
|
2559 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2560 | { |
|
|
2561 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2562 | } |
|
|
2563 | |
|
|
2564 | static void |
|
|
2565 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2566 | { |
|
|
2567 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2568 | |
|
|
2569 | if (ev_cb (w)) |
|
|
2570 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2571 | else |
|
|
2572 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2573 | } |
|
|
2574 | |
|
|
2575 | static void |
|
|
2576 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2577 | { |
|
|
2578 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2579 | |
|
|
2580 | { |
|
|
2581 | struct ev_loop *loop = w->other; |
|
|
2582 | |
|
|
2583 | while (fdchangecnt) |
|
|
2584 | { |
|
|
2585 | fd_reify (EV_A); |
|
|
2586 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2587 | } |
|
|
2588 | } |
|
|
2589 | } |
|
|
2590 | |
|
|
2591 | #if 0 |
|
|
2592 | static void |
|
|
2593 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2594 | { |
|
|
2595 | ev_idle_stop (EV_A_ idle); |
|
|
2596 | } |
|
|
2597 | #endif |
|
|
2598 | |
|
|
2599 | void |
|
|
2600 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2601 | { |
|
|
2602 | if (expect_false (ev_is_active (w))) |
|
|
2603 | return; |
|
|
2604 | |
|
|
2605 | { |
|
|
2606 | struct ev_loop *loop = w->other; |
|
|
2607 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2608 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2609 | } |
|
|
2610 | |
|
|
2611 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2612 | ev_io_start (EV_A_ &w->io); |
|
|
2613 | |
|
|
2614 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2615 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2616 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2617 | |
|
|
2618 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2619 | |
|
|
2620 | ev_start (EV_A_ (W)w, 1); |
|
|
2621 | } |
|
|
2622 | |
|
|
2623 | void |
|
|
2624 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
2625 | { |
|
|
2626 | clear_pending (EV_A_ (W)w); |
|
|
2627 | if (expect_false (!ev_is_active (w))) |
|
|
2628 | return; |
|
|
2629 | |
|
|
2630 | ev_io_stop (EV_A_ &w->io); |
|
|
2631 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2632 | |
|
|
2633 | ev_stop (EV_A_ (W)w); |
|
|
2634 | } |
|
|
2635 | #endif |
|
|
2636 | |
|
|
2637 | #if EV_FORK_ENABLE |
|
|
2638 | void |
|
|
2639 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2640 | { |
|
|
2641 | if (expect_false (ev_is_active (w))) |
|
|
2642 | return; |
|
|
2643 | |
|
|
2644 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2645 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2646 | forks [forkcnt - 1] = w; |
|
|
2647 | } |
|
|
2648 | |
|
|
2649 | void |
|
|
2650 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2651 | { |
|
|
2652 | clear_pending (EV_A_ (W)w); |
|
|
2653 | if (expect_false (!ev_is_active (w))) |
|
|
2654 | return; |
|
|
2655 | |
|
|
2656 | { |
|
|
2657 | int active = ev_active (w); |
|
|
2658 | |
|
|
2659 | forks [active - 1] = forks [--forkcnt]; |
|
|
2660 | ev_active (forks [active - 1]) = active; |
|
|
2661 | } |
|
|
2662 | |
|
|
2663 | ev_stop (EV_A_ (W)w); |
|
|
2664 | } |
|
|
2665 | #endif |
|
|
2666 | |
|
|
2667 | #if EV_ASYNC_ENABLE |
|
|
2668 | void |
|
|
2669 | ev_async_start (EV_P_ ev_async *w) |
|
|
2670 | { |
|
|
2671 | if (expect_false (ev_is_active (w))) |
|
|
2672 | return; |
|
|
2673 | |
|
|
2674 | evpipe_init (EV_A); |
|
|
2675 | |
|
|
2676 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2677 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2678 | asyncs [asynccnt - 1] = w; |
|
|
2679 | } |
|
|
2680 | |
|
|
2681 | void |
|
|
2682 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2683 | { |
|
|
2684 | clear_pending (EV_A_ (W)w); |
|
|
2685 | if (expect_false (!ev_is_active (w))) |
|
|
2686 | return; |
|
|
2687 | |
|
|
2688 | { |
|
|
2689 | int active = ev_active (w); |
|
|
2690 | |
|
|
2691 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2692 | ev_active (asyncs [active - 1]) = active; |
|
|
2693 | } |
|
|
2694 | |
|
|
2695 | ev_stop (EV_A_ (W)w); |
|
|
2696 | } |
|
|
2697 | |
|
|
2698 | void |
|
|
2699 | ev_async_send (EV_P_ ev_async *w) |
|
|
2700 | { |
|
|
2701 | w->sent = 1; |
|
|
2702 | evpipe_write (EV_A_ &gotasync); |
|
|
2703 | } |
|
|
2704 | #endif |
|
|
2705 | |
1585 | /*****************************************************************************/ |
2706 | /*****************************************************************************/ |
1586 | |
2707 | |
1587 | struct ev_once |
2708 | struct ev_once |
1588 | { |
2709 | { |
1589 | struct ev_io io; |
2710 | ev_io io; |
1590 | struct ev_timer to; |
2711 | ev_timer to; |
1591 | void (*cb)(int revents, void *arg); |
2712 | void (*cb)(int revents, void *arg); |
1592 | void *arg; |
2713 | void *arg; |
1593 | }; |
2714 | }; |
1594 | |
2715 | |
1595 | static void |
2716 | static void |
… | |
… | |
1604 | |
2725 | |
1605 | cb (revents, arg); |
2726 | cb (revents, arg); |
1606 | } |
2727 | } |
1607 | |
2728 | |
1608 | static void |
2729 | static void |
1609 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
2730 | once_cb_io (EV_P_ ev_io *w, int revents) |
1610 | { |
2731 | { |
1611 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2732 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1612 | } |
2733 | } |
1613 | |
2734 | |
1614 | static void |
2735 | static void |
1615 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
2736 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1616 | { |
2737 | { |
1617 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2738 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1618 | } |
2739 | } |
1619 | |
2740 | |
1620 | void |
2741 | void |
1621 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2742 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1622 | { |
2743 | { |
1623 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
2744 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1624 | |
2745 | |
1625 | if (!once) |
2746 | if (expect_false (!once)) |
|
|
2747 | { |
1626 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
2748 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1627 | else |
2749 | return; |
1628 | { |
2750 | } |
|
|
2751 | |
1629 | once->cb = cb; |
2752 | once->cb = cb; |
1630 | once->arg = arg; |
2753 | once->arg = arg; |
1631 | |
2754 | |
1632 | ev_init (&once->io, once_cb_io); |
2755 | ev_init (&once->io, once_cb_io); |
1633 | if (fd >= 0) |
2756 | if (fd >= 0) |
1634 | { |
2757 | { |
1635 | ev_io_set (&once->io, fd, events); |
2758 | ev_io_set (&once->io, fd, events); |
1636 | ev_io_start (EV_A_ &once->io); |
2759 | ev_io_start (EV_A_ &once->io); |
1637 | } |
2760 | } |
1638 | |
2761 | |
1639 | ev_init (&once->to, once_cb_to); |
2762 | ev_init (&once->to, once_cb_to); |
1640 | if (timeout >= 0.) |
2763 | if (timeout >= 0.) |
1641 | { |
2764 | { |
1642 | ev_timer_set (&once->to, timeout, 0.); |
2765 | ev_timer_set (&once->to, timeout, 0.); |
1643 | ev_timer_start (EV_A_ &once->to); |
2766 | ev_timer_start (EV_A_ &once->to); |
1644 | } |
|
|
1645 | } |
2767 | } |
1646 | } |
2768 | } |
|
|
2769 | |
|
|
2770 | #if EV_MULTIPLICITY |
|
|
2771 | #include "ev_wrap.h" |
|
|
2772 | #endif |
1647 | |
2773 | |
1648 | #ifdef __cplusplus |
2774 | #ifdef __cplusplus |
1649 | } |
2775 | } |
1650 | #endif |
2776 | #endif |
1651 | |
2777 | |