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 | */ |
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39 | |
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40 | #ifdef __cplusplus |
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41 | extern "C" { |
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42 | #endif |
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43 | |
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44 | /* this big block deduces configuration from config.h */ |
31 | #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 |
32 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_SYSCALL |
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53 | # ifndef EV_USE_CLOCK_SYSCALL |
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54 | # define EV_USE_CLOCK_SYSCALL 1 |
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55 | # ifndef EV_USE_REALTIME |
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56 | # define EV_USE_REALTIME 0 |
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57 | # endif |
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58 | # ifndef EV_USE_MONOTONIC |
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59 | # define EV_USE_MONOTONIC 1 |
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60 | # endif |
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61 | # endif |
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62 | # endif |
33 | |
63 | |
34 | # if HAVE_CLOCK_GETTIME |
64 | # if HAVE_CLOCK_GETTIME |
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65 | # ifndef EV_USE_MONOTONIC |
35 | # define EV_USE_MONOTONIC 1 |
66 | # define EV_USE_MONOTONIC 1 |
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67 | # endif |
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68 | # ifndef EV_USE_REALTIME |
36 | # define EV_USE_REALTIME 1 |
69 | # define EV_USE_REALTIME 1 |
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70 | # endif |
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71 | # else |
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72 | # ifndef EV_USE_MONOTONIC |
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73 | # define EV_USE_MONOTONIC 0 |
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74 | # endif |
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75 | # ifndef EV_USE_REALTIME |
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76 | # define EV_USE_REALTIME 0 |
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77 | # endif |
37 | # endif |
78 | # endif |
38 | |
79 | |
39 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
80 | # ifndef EV_USE_NANOSLEEP |
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81 | # if HAVE_NANOSLEEP |
40 | # define EV_USE_SELECT 1 |
82 | # define EV_USE_NANOSLEEP 1 |
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83 | # else |
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84 | # define EV_USE_NANOSLEEP 0 |
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85 | # endif |
41 | # endif |
86 | # endif |
42 | |
87 | |
43 | # if HAVE_POLL && HAVE_POLL_H |
88 | # ifndef EV_USE_SELECT |
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89 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
44 | # define EV_USE_POLL 1 |
90 | # define EV_USE_SELECT 1 |
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91 | # else |
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92 | # define EV_USE_SELECT 0 |
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93 | # endif |
45 | # endif |
94 | # endif |
46 | |
95 | |
47 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
96 | # ifndef EV_USE_POLL |
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97 | # if HAVE_POLL && HAVE_POLL_H |
48 | # define EV_USE_EPOLL 1 |
98 | # define EV_USE_POLL 1 |
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99 | # else |
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100 | # define EV_USE_POLL 0 |
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101 | # endif |
49 | # endif |
102 | # endif |
50 | |
103 | |
51 | # if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
104 | # ifndef EV_USE_EPOLL |
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105 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
52 | # define EV_USE_KQUEUE 1 |
106 | # define EV_USE_EPOLL 1 |
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107 | # else |
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108 | # define EV_USE_EPOLL 0 |
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109 | # endif |
53 | # endif |
110 | # endif |
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111 | |
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112 | # ifndef EV_USE_KQUEUE |
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113 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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114 | # define EV_USE_KQUEUE 1 |
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115 | # else |
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116 | # define EV_USE_KQUEUE 0 |
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117 | # endif |
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118 | # endif |
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119 | |
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120 | # ifndef EV_USE_PORT |
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121 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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122 | # define EV_USE_PORT 1 |
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123 | # else |
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124 | # define EV_USE_PORT 0 |
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125 | # endif |
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126 | # endif |
54 | |
127 | |
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128 | # ifndef EV_USE_INOTIFY |
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129 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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130 | # define EV_USE_INOTIFY 1 |
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131 | # else |
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132 | # define EV_USE_INOTIFY 0 |
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133 | # endif |
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134 | # endif |
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135 | |
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136 | # ifndef EV_USE_EVENTFD |
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137 | # if HAVE_EVENTFD |
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138 | # define EV_USE_EVENTFD 1 |
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139 | # else |
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140 | # define EV_USE_EVENTFD 0 |
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141 | # endif |
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142 | # endif |
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143 | |
55 | #endif |
144 | #endif |
56 | |
145 | |
57 | #include <math.h> |
146 | #include <math.h> |
58 | #include <stdlib.h> |
147 | #include <stdlib.h> |
59 | #include <fcntl.h> |
148 | #include <fcntl.h> |
… | |
… | |
66 | #include <sys/types.h> |
155 | #include <sys/types.h> |
67 | #include <time.h> |
156 | #include <time.h> |
68 | |
157 | |
69 | #include <signal.h> |
158 | #include <signal.h> |
70 | |
159 | |
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160 | #ifdef EV_H |
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161 | # include EV_H |
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162 | #else |
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163 | # include "ev.h" |
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164 | #endif |
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165 | |
71 | #ifndef WIN32 |
166 | #ifndef _WIN32 |
72 | # include <unistd.h> |
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73 | # include <sys/time.h> |
167 | # include <sys/time.h> |
74 | # include <sys/wait.h> |
168 | # include <sys/wait.h> |
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169 | # include <unistd.h> |
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170 | #else |
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171 | # include <io.h> |
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172 | # define WIN32_LEAN_AND_MEAN |
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173 | # include <windows.h> |
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174 | # ifndef EV_SELECT_IS_WINSOCKET |
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175 | # define EV_SELECT_IS_WINSOCKET 1 |
75 | #endif |
176 | # endif |
76 | /**/ |
177 | #endif |
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178 | |
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179 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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180 | |
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181 | #ifndef EV_USE_CLOCK_SYSCALL |
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182 | # if __linux && __GLIBC__ >= 2 |
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183 | # define EV_USE_CLOCK_SYSCALL 1 |
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184 | # else |
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185 | # define EV_USE_CLOCK_SYSCALL 0 |
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186 | # endif |
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187 | #endif |
77 | |
188 | |
78 | #ifndef EV_USE_MONOTONIC |
189 | #ifndef EV_USE_MONOTONIC |
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190 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
79 | # define EV_USE_MONOTONIC 1 |
191 | # define EV_USE_MONOTONIC 1 |
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192 | # else |
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193 | # define EV_USE_MONOTONIC 0 |
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194 | # endif |
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195 | #endif |
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196 | |
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197 | #ifndef EV_USE_REALTIME |
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198 | # define EV_USE_REALTIME 0 |
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199 | #endif |
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200 | |
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201 | #ifndef EV_USE_NANOSLEEP |
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202 | # if _POSIX_C_SOURCE >= 199309L |
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203 | # define EV_USE_NANOSLEEP 1 |
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204 | # else |
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205 | # define EV_USE_NANOSLEEP 0 |
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206 | # endif |
80 | #endif |
207 | #endif |
81 | |
208 | |
82 | #ifndef EV_USE_SELECT |
209 | #ifndef EV_USE_SELECT |
83 | # define EV_USE_SELECT 1 |
210 | # define EV_USE_SELECT 1 |
84 | #endif |
211 | #endif |
85 | |
212 | |
86 | #ifndef EV_USE_POLL |
213 | #ifndef EV_USE_POLL |
87 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
214 | # ifdef _WIN32 |
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215 | # define EV_USE_POLL 0 |
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216 | # else |
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217 | # define EV_USE_POLL 1 |
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218 | # endif |
88 | #endif |
219 | #endif |
89 | |
220 | |
90 | #ifndef EV_USE_EPOLL |
221 | #ifndef EV_USE_EPOLL |
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222 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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223 | # define EV_USE_EPOLL 1 |
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224 | # else |
91 | # define EV_USE_EPOLL 0 |
225 | # define EV_USE_EPOLL 0 |
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226 | # endif |
92 | #endif |
227 | #endif |
93 | |
228 | |
94 | #ifndef EV_USE_KQUEUE |
229 | #ifndef EV_USE_KQUEUE |
95 | # define EV_USE_KQUEUE 0 |
230 | # define EV_USE_KQUEUE 0 |
96 | #endif |
231 | #endif |
97 | |
232 | |
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233 | #ifndef EV_USE_PORT |
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234 | # define EV_USE_PORT 0 |
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235 | #endif |
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236 | |
98 | #ifndef EV_USE_WIN32 |
237 | #ifndef EV_USE_INOTIFY |
99 | # ifdef WIN32 |
238 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
100 | # define EV_USE_WIN32 0 /* it does not exist, use select */ |
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101 | # undef EV_USE_SELECT |
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102 | # define EV_USE_SELECT 1 |
239 | # define EV_USE_INOTIFY 1 |
103 | # else |
240 | # else |
104 | # define EV_USE_WIN32 0 |
241 | # define EV_USE_INOTIFY 0 |
105 | # endif |
242 | # endif |
106 | #endif |
243 | #endif |
107 | |
244 | |
108 | #ifndef EV_USE_REALTIME |
245 | #ifndef EV_PID_HASHSIZE |
109 | # define EV_USE_REALTIME 1 |
246 | # if EV_MINIMAL |
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247 | # define EV_PID_HASHSIZE 1 |
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248 | # else |
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249 | # define EV_PID_HASHSIZE 16 |
110 | #endif |
250 | # endif |
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251 | #endif |
111 | |
252 | |
112 | /**/ |
253 | #ifndef EV_INOTIFY_HASHSIZE |
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254 | # if EV_MINIMAL |
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255 | # define EV_INOTIFY_HASHSIZE 1 |
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256 | # else |
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257 | # define EV_INOTIFY_HASHSIZE 16 |
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258 | # endif |
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259 | #endif |
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260 | |
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261 | #ifndef EV_USE_EVENTFD |
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262 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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263 | # define EV_USE_EVENTFD 1 |
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264 | # else |
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265 | # define EV_USE_EVENTFD 0 |
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266 | # endif |
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267 | #endif |
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268 | |
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269 | #if 0 /* debugging */ |
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270 | # define EV_VERIFY 3 |
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271 | # define EV_USE_4HEAP 1 |
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272 | # define EV_HEAP_CACHE_AT 1 |
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273 | #endif |
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274 | |
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275 | #ifndef EV_VERIFY |
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276 | # define EV_VERIFY !EV_MINIMAL |
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277 | #endif |
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278 | |
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279 | #ifndef EV_USE_4HEAP |
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280 | # define EV_USE_4HEAP !EV_MINIMAL |
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281 | #endif |
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282 | |
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283 | #ifndef EV_HEAP_CACHE_AT |
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284 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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285 | #endif |
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286 | |
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287 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
113 | |
288 | |
114 | #ifndef CLOCK_MONOTONIC |
289 | #ifndef CLOCK_MONOTONIC |
115 | # undef EV_USE_MONOTONIC |
290 | # undef EV_USE_MONOTONIC |
116 | # define EV_USE_MONOTONIC 0 |
291 | # define EV_USE_MONOTONIC 0 |
117 | #endif |
292 | #endif |
… | |
… | |
119 | #ifndef CLOCK_REALTIME |
294 | #ifndef CLOCK_REALTIME |
120 | # undef EV_USE_REALTIME |
295 | # undef EV_USE_REALTIME |
121 | # define EV_USE_REALTIME 0 |
296 | # define EV_USE_REALTIME 0 |
122 | #endif |
297 | #endif |
123 | |
298 | |
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299 | #if !EV_STAT_ENABLE |
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300 | # undef EV_USE_INOTIFY |
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301 | # define EV_USE_INOTIFY 0 |
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302 | #endif |
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303 | |
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304 | #if !EV_USE_NANOSLEEP |
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305 | # ifndef _WIN32 |
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306 | # include <sys/select.h> |
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307 | # endif |
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308 | #endif |
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309 | |
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310 | #if EV_USE_INOTIFY |
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311 | # include <sys/utsname.h> |
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312 | # include <sys/statfs.h> |
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313 | # include <sys/inotify.h> |
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314 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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315 | # ifndef IN_DONT_FOLLOW |
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316 | # undef EV_USE_INOTIFY |
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317 | # define EV_USE_INOTIFY 0 |
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318 | # endif |
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319 | #endif |
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320 | |
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321 | #if EV_SELECT_IS_WINSOCKET |
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322 | # include <winsock.h> |
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323 | #endif |
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324 | |
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325 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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326 | /* which makes programs even slower. might work on other unices, too. */ |
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327 | #if EV_USE_CLOCK_SYSCALL |
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328 | # include <syscall.h> |
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329 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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330 | # undef EV_USE_MONOTONIC |
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331 | # define EV_USE_MONOTONIC 1 |
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332 | #endif |
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333 | |
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334 | #if EV_USE_EVENTFD |
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335 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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336 | # include <stdint.h> |
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337 | # ifdef __cplusplus |
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338 | extern "C" { |
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339 | # endif |
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340 | int eventfd (unsigned int initval, int flags); |
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341 | # ifdef __cplusplus |
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342 | } |
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343 | # endif |
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344 | #endif |
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345 | |
124 | /**/ |
346 | /**/ |
125 | |
347 | |
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348 | #if EV_VERIFY >= 3 |
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349 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
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350 | #else |
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351 | # define EV_FREQUENT_CHECK do { } while (0) |
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352 | #endif |
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353 | |
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354 | /* |
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355 | * This is used to avoid floating point rounding problems. |
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356 | * It is added to ev_rt_now when scheduling periodics |
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357 | * to ensure progress, time-wise, even when rounding |
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358 | * errors are against us. |
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359 | * This value is good at least till the year 4000. |
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360 | * Better solutions welcome. |
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361 | */ |
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362 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
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363 | |
126 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
364 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
127 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
365 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
128 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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129 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
366 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
130 | |
367 | |
131 | #include "ev.h" |
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132 | |
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133 | #if __GNUC__ >= 3 |
368 | #if __GNUC__ >= 4 |
134 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
369 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
135 | # define inline inline |
370 | # define noinline __attribute__ ((noinline)) |
136 | #else |
371 | #else |
137 | # define expect(expr,value) (expr) |
372 | # define expect(expr,value) (expr) |
138 | # define inline static |
373 | # define noinline |
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374 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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375 | # define inline |
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376 | # endif |
139 | #endif |
377 | #endif |
140 | |
378 | |
141 | #define expect_false(expr) expect ((expr) != 0, 0) |
379 | #define expect_false(expr) expect ((expr) != 0, 0) |
142 | #define expect_true(expr) expect ((expr) != 0, 1) |
380 | #define expect_true(expr) expect ((expr) != 0, 1) |
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381 | #define inline_size static inline |
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382 | |
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383 | #if EV_MINIMAL |
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384 | # define inline_speed static noinline |
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385 | #else |
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386 | # define inline_speed static inline |
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387 | #endif |
143 | |
388 | |
144 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
389 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
145 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
390 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
146 | |
391 | |
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392 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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393 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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394 | |
147 | typedef struct ev_watcher *W; |
395 | typedef ev_watcher *W; |
148 | typedef struct ev_watcher_list *WL; |
396 | typedef ev_watcher_list *WL; |
149 | typedef struct ev_watcher_time *WT; |
397 | typedef ev_watcher_time *WT; |
150 | |
398 | |
|
|
399 | #define ev_active(w) ((W)(w))->active |
|
|
400 | #define ev_at(w) ((WT)(w))->at |
|
|
401 | |
|
|
402 | #if EV_USE_MONOTONIC |
|
|
403 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
404 | /* giving it a reasonably high chance of working on typical architetcures */ |
151 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
405 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
406 | #endif |
152 | |
407 | |
|
|
408 | #ifdef _WIN32 |
153 | #include "ev_win32.c" |
409 | # include "ev_win32.c" |
|
|
410 | #endif |
154 | |
411 | |
155 | /*****************************************************************************/ |
412 | /*****************************************************************************/ |
156 | |
413 | |
157 | static void (*syserr_cb)(const char *msg); |
414 | static void (*syserr_cb)(const char *msg); |
158 | |
415 | |
|
|
416 | void |
159 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
417 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
160 | { |
418 | { |
161 | syserr_cb = cb; |
419 | syserr_cb = cb; |
162 | } |
420 | } |
163 | |
421 | |
164 | static void |
422 | static void noinline |
165 | syserr (const char *msg) |
423 | ev_syserr (const char *msg) |
166 | { |
424 | { |
167 | if (!msg) |
425 | if (!msg) |
168 | msg = "(libev) system error"; |
426 | msg = "(libev) system error"; |
169 | |
427 | |
170 | if (syserr_cb) |
428 | if (syserr_cb) |
… | |
… | |
174 | perror (msg); |
432 | perror (msg); |
175 | abort (); |
433 | abort (); |
176 | } |
434 | } |
177 | } |
435 | } |
178 | |
436 | |
|
|
437 | static void * |
|
|
438 | ev_realloc_emul (void *ptr, long size) |
|
|
439 | { |
|
|
440 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
441 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
442 | * the single unix specification, so work around them here. |
|
|
443 | */ |
|
|
444 | |
|
|
445 | if (size) |
|
|
446 | return realloc (ptr, size); |
|
|
447 | |
|
|
448 | free (ptr); |
|
|
449 | return 0; |
|
|
450 | } |
|
|
451 | |
179 | static void *(*alloc)(void *ptr, long size); |
452 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
180 | |
453 | |
|
|
454 | void |
181 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
455 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
182 | { |
456 | { |
183 | alloc = cb; |
457 | alloc = cb; |
184 | } |
458 | } |
185 | |
459 | |
186 | static void * |
460 | inline_speed void * |
187 | ev_realloc (void *ptr, long size) |
461 | ev_realloc (void *ptr, long size) |
188 | { |
462 | { |
189 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
463 | ptr = alloc (ptr, size); |
190 | |
464 | |
191 | if (!ptr && size) |
465 | if (!ptr && size) |
192 | { |
466 | { |
193 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
467 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
194 | abort (); |
468 | abort (); |
… | |
… | |
205 | typedef struct |
479 | typedef struct |
206 | { |
480 | { |
207 | WL head; |
481 | WL head; |
208 | unsigned char events; |
482 | unsigned char events; |
209 | unsigned char reify; |
483 | unsigned char reify; |
|
|
484 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
485 | unsigned char unused; |
|
|
486 | #if EV_USE_EPOLL |
|
|
487 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
488 | #endif |
|
|
489 | #if EV_SELECT_IS_WINSOCKET |
|
|
490 | SOCKET handle; |
|
|
491 | #endif |
210 | } ANFD; |
492 | } ANFD; |
211 | |
493 | |
212 | typedef struct |
494 | typedef struct |
213 | { |
495 | { |
214 | W w; |
496 | W w; |
215 | int events; |
497 | int events; |
216 | } ANPENDING; |
498 | } ANPENDING; |
217 | |
499 | |
|
|
500 | #if EV_USE_INOTIFY |
|
|
501 | /* hash table entry per inotify-id */ |
|
|
502 | typedef struct |
|
|
503 | { |
|
|
504 | WL head; |
|
|
505 | } ANFS; |
|
|
506 | #endif |
|
|
507 | |
|
|
508 | /* Heap Entry */ |
|
|
509 | #if EV_HEAP_CACHE_AT |
|
|
510 | typedef struct { |
|
|
511 | ev_tstamp at; |
|
|
512 | WT w; |
|
|
513 | } ANHE; |
|
|
514 | |
|
|
515 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
516 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
517 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
518 | #else |
|
|
519 | typedef WT ANHE; |
|
|
520 | |
|
|
521 | #define ANHE_w(he) (he) |
|
|
522 | #define ANHE_at(he) (he)->at |
|
|
523 | #define ANHE_at_cache(he) |
|
|
524 | #endif |
|
|
525 | |
218 | #if EV_MULTIPLICITY |
526 | #if EV_MULTIPLICITY |
219 | |
527 | |
220 | struct ev_loop |
528 | struct ev_loop |
221 | { |
529 | { |
|
|
530 | ev_tstamp ev_rt_now; |
|
|
531 | #define ev_rt_now ((loop)->ev_rt_now) |
222 | # define VAR(name,decl) decl; |
532 | #define VAR(name,decl) decl; |
223 | # include "ev_vars.h" |
533 | #include "ev_vars.h" |
224 | }; |
|
|
225 | # undef VAR |
534 | #undef VAR |
|
|
535 | }; |
226 | # include "ev_wrap.h" |
536 | #include "ev_wrap.h" |
|
|
537 | |
|
|
538 | static struct ev_loop default_loop_struct; |
|
|
539 | struct ev_loop *ev_default_loop_ptr; |
227 | |
540 | |
228 | #else |
541 | #else |
229 | |
542 | |
|
|
543 | ev_tstamp ev_rt_now; |
230 | # define VAR(name,decl) static decl; |
544 | #define VAR(name,decl) static decl; |
231 | # include "ev_vars.h" |
545 | #include "ev_vars.h" |
232 | # undef VAR |
546 | #undef VAR |
|
|
547 | |
|
|
548 | static int ev_default_loop_ptr; |
233 | |
549 | |
234 | #endif |
550 | #endif |
235 | |
551 | |
236 | /*****************************************************************************/ |
552 | /*****************************************************************************/ |
237 | |
553 | |
238 | inline ev_tstamp |
554 | ev_tstamp |
239 | ev_time (void) |
555 | ev_time (void) |
240 | { |
556 | { |
241 | #if EV_USE_REALTIME |
557 | #if EV_USE_REALTIME |
242 | struct timespec ts; |
558 | struct timespec ts; |
243 | clock_gettime (CLOCK_REALTIME, &ts); |
559 | clock_gettime (CLOCK_REALTIME, &ts); |
… | |
… | |
247 | gettimeofday (&tv, 0); |
563 | gettimeofday (&tv, 0); |
248 | return tv.tv_sec + tv.tv_usec * 1e-6; |
564 | return tv.tv_sec + tv.tv_usec * 1e-6; |
249 | #endif |
565 | #endif |
250 | } |
566 | } |
251 | |
567 | |
252 | inline ev_tstamp |
568 | ev_tstamp inline_size |
253 | get_clock (void) |
569 | get_clock (void) |
254 | { |
570 | { |
255 | #if EV_USE_MONOTONIC |
571 | #if EV_USE_MONOTONIC |
256 | if (expect_true (have_monotonic)) |
572 | if (expect_true (have_monotonic)) |
257 | { |
573 | { |
… | |
… | |
262 | #endif |
578 | #endif |
263 | |
579 | |
264 | return ev_time (); |
580 | return ev_time (); |
265 | } |
581 | } |
266 | |
582 | |
|
|
583 | #if EV_MULTIPLICITY |
267 | ev_tstamp |
584 | ev_tstamp |
268 | ev_now (EV_P) |
585 | ev_now (EV_P) |
269 | { |
586 | { |
270 | return rt_now; |
587 | return ev_rt_now; |
271 | } |
588 | } |
|
|
589 | #endif |
272 | |
590 | |
273 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
591 | void |
|
|
592 | ev_sleep (ev_tstamp delay) |
|
|
593 | { |
|
|
594 | if (delay > 0.) |
|
|
595 | { |
|
|
596 | #if EV_USE_NANOSLEEP |
|
|
597 | struct timespec ts; |
|
|
598 | |
|
|
599 | ts.tv_sec = (time_t)delay; |
|
|
600 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
601 | |
|
|
602 | nanosleep (&ts, 0); |
|
|
603 | #elif defined(_WIN32) |
|
|
604 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
605 | #else |
|
|
606 | struct timeval tv; |
|
|
607 | |
|
|
608 | tv.tv_sec = (time_t)delay; |
|
|
609 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
610 | |
|
|
611 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
612 | /* somehting nto guaranteed by newer posix versions, but guaranteed */ |
|
|
613 | /* by older ones */ |
|
|
614 | select (0, 0, 0, 0, &tv); |
|
|
615 | #endif |
|
|
616 | } |
|
|
617 | } |
|
|
618 | |
|
|
619 | /*****************************************************************************/ |
|
|
620 | |
|
|
621 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
622 | |
|
|
623 | int inline_size |
|
|
624 | array_nextsize (int elem, int cur, int cnt) |
|
|
625 | { |
|
|
626 | int ncur = cur + 1; |
|
|
627 | |
|
|
628 | do |
|
|
629 | ncur <<= 1; |
|
|
630 | while (cnt > ncur); |
|
|
631 | |
|
|
632 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
633 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
634 | { |
|
|
635 | ncur *= elem; |
|
|
636 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
637 | ncur = ncur - sizeof (void *) * 4; |
|
|
638 | ncur /= elem; |
|
|
639 | } |
|
|
640 | |
|
|
641 | return ncur; |
|
|
642 | } |
|
|
643 | |
|
|
644 | static noinline void * |
|
|
645 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
646 | { |
|
|
647 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
648 | return ev_realloc (base, elem * *cur); |
|
|
649 | } |
|
|
650 | |
|
|
651 | #define array_init_zero(base,count) \ |
|
|
652 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
274 | |
653 | |
275 | #define array_needsize(type,base,cur,cnt,init) \ |
654 | #define array_needsize(type,base,cur,cnt,init) \ |
276 | if (expect_false ((cnt) > cur)) \ |
655 | if (expect_false ((cnt) > (cur))) \ |
277 | { \ |
656 | { \ |
278 | int newcnt = cur; \ |
657 | int ocur_ = (cur); \ |
279 | do \ |
658 | (base) = (type *)array_realloc \ |
280 | { \ |
659 | (sizeof (type), (base), &(cur), (cnt)); \ |
281 | newcnt = array_roundsize (type, newcnt << 1); \ |
660 | init ((base) + (ocur_), (cur) - ocur_); \ |
282 | } \ |
|
|
283 | while ((cnt) > newcnt); \ |
|
|
284 | \ |
|
|
285 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
286 | init (base + cur, newcnt - cur); \ |
|
|
287 | cur = newcnt; \ |
|
|
288 | } |
661 | } |
289 | |
662 | |
|
|
663 | #if 0 |
290 | #define array_slim(type,stem) \ |
664 | #define array_slim(type,stem) \ |
291 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
665 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
292 | { \ |
666 | { \ |
293 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
667 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
294 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
668 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
295 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
669 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
296 | } |
670 | } |
297 | |
671 | #endif |
298 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
|
|
299 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
|
|
300 | #define array_free_microshit(stem) \ |
|
|
301 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
|
|
302 | |
672 | |
303 | #define array_free(stem, idx) \ |
673 | #define array_free(stem, idx) \ |
304 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
674 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
305 | |
675 | |
306 | /*****************************************************************************/ |
676 | /*****************************************************************************/ |
307 | |
677 | |
308 | static void |
678 | void noinline |
309 | anfds_init (ANFD *base, int count) |
|
|
310 | { |
|
|
311 | while (count--) |
|
|
312 | { |
|
|
313 | base->head = 0; |
|
|
314 | base->events = EV_NONE; |
|
|
315 | base->reify = 0; |
|
|
316 | |
|
|
317 | ++base; |
|
|
318 | } |
|
|
319 | } |
|
|
320 | |
|
|
321 | void |
|
|
322 | ev_feed_event (EV_P_ void *w, int revents) |
679 | ev_feed_event (EV_P_ void *w, int revents) |
323 | { |
680 | { |
324 | W w_ = (W)w; |
681 | W w_ = (W)w; |
|
|
682 | int pri = ABSPRI (w_); |
325 | |
683 | |
326 | if (w_->pending) |
684 | if (expect_false (w_->pending)) |
|
|
685 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
686 | else |
327 | { |
687 | { |
|
|
688 | w_->pending = ++pendingcnt [pri]; |
|
|
689 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
690 | pendings [pri][w_->pending - 1].w = w_; |
328 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
691 | pendings [pri][w_->pending - 1].events = revents; |
329 | return; |
|
|
330 | } |
692 | } |
331 | |
|
|
332 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
333 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
|
|
334 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
335 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
336 | } |
693 | } |
337 | |
694 | |
338 | static void |
695 | void inline_speed |
339 | queue_events (EV_P_ W *events, int eventcnt, int type) |
696 | queue_events (EV_P_ W *events, int eventcnt, int type) |
340 | { |
697 | { |
341 | int i; |
698 | int i; |
342 | |
699 | |
343 | for (i = 0; i < eventcnt; ++i) |
700 | for (i = 0; i < eventcnt; ++i) |
344 | ev_feed_event (EV_A_ events [i], type); |
701 | ev_feed_event (EV_A_ events [i], type); |
345 | } |
702 | } |
346 | |
703 | |
347 | inline void |
704 | /*****************************************************************************/ |
|
|
705 | |
|
|
706 | void inline_speed |
348 | fd_event (EV_P_ int fd, int revents) |
707 | fd_event (EV_P_ int fd, int revents) |
349 | { |
708 | { |
350 | ANFD *anfd = anfds + fd; |
709 | ANFD *anfd = anfds + fd; |
351 | struct ev_io *w; |
710 | ev_io *w; |
352 | |
711 | |
353 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
712 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
354 | { |
713 | { |
355 | int ev = w->events & revents; |
714 | int ev = w->events & revents; |
356 | |
715 | |
357 | if (ev) |
716 | if (ev) |
358 | ev_feed_event (EV_A_ (W)w, ev); |
717 | ev_feed_event (EV_A_ (W)w, ev); |
… | |
… | |
360 | } |
719 | } |
361 | |
720 | |
362 | void |
721 | void |
363 | ev_feed_fd_event (EV_P_ int fd, int revents) |
722 | ev_feed_fd_event (EV_P_ int fd, int revents) |
364 | { |
723 | { |
|
|
724 | if (fd >= 0 && fd < anfdmax) |
365 | fd_event (EV_A_ fd, revents); |
725 | fd_event (EV_A_ fd, revents); |
366 | } |
726 | } |
367 | |
727 | |
368 | /*****************************************************************************/ |
728 | void inline_size |
369 | |
|
|
370 | static void |
|
|
371 | fd_reify (EV_P) |
729 | fd_reify (EV_P) |
372 | { |
730 | { |
373 | int i; |
731 | int i; |
374 | |
732 | |
375 | for (i = 0; i < fdchangecnt; ++i) |
733 | for (i = 0; i < fdchangecnt; ++i) |
376 | { |
734 | { |
377 | int fd = fdchanges [i]; |
735 | int fd = fdchanges [i]; |
378 | ANFD *anfd = anfds + fd; |
736 | ANFD *anfd = anfds + fd; |
379 | struct ev_io *w; |
737 | ev_io *w; |
380 | |
738 | |
381 | int events = 0; |
739 | unsigned char events = 0; |
382 | |
740 | |
383 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
741 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
384 | events |= w->events; |
742 | events |= (unsigned char)w->events; |
385 | |
743 | |
|
|
744 | #if EV_SELECT_IS_WINSOCKET |
|
|
745 | if (events) |
|
|
746 | { |
|
|
747 | unsigned long arg; |
|
|
748 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
749 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
750 | #else |
|
|
751 | anfd->handle = _get_osfhandle (fd); |
|
|
752 | #endif |
|
|
753 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
754 | } |
|
|
755 | #endif |
|
|
756 | |
|
|
757 | { |
|
|
758 | unsigned char o_events = anfd->events; |
|
|
759 | unsigned char o_reify = anfd->reify; |
|
|
760 | |
386 | anfd->reify = 0; |
761 | anfd->reify = 0; |
387 | |
|
|
388 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
389 | anfd->events = events; |
762 | anfd->events = events; |
|
|
763 | |
|
|
764 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
765 | backend_modify (EV_A_ fd, o_events, events); |
|
|
766 | } |
390 | } |
767 | } |
391 | |
768 | |
392 | fdchangecnt = 0; |
769 | fdchangecnt = 0; |
393 | } |
770 | } |
394 | |
771 | |
395 | static void |
772 | void inline_size |
396 | fd_change (EV_P_ int fd) |
773 | fd_change (EV_P_ int fd, int flags) |
397 | { |
774 | { |
398 | if (anfds [fd].reify) |
775 | unsigned char reify = anfds [fd].reify; |
399 | return; |
|
|
400 | |
|
|
401 | anfds [fd].reify = 1; |
776 | anfds [fd].reify |= flags; |
402 | |
777 | |
|
|
778 | if (expect_true (!reify)) |
|
|
779 | { |
403 | ++fdchangecnt; |
780 | ++fdchangecnt; |
404 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
781 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
405 | fdchanges [fdchangecnt - 1] = fd; |
782 | fdchanges [fdchangecnt - 1] = fd; |
|
|
783 | } |
406 | } |
784 | } |
407 | |
785 | |
408 | static void |
786 | void inline_speed |
409 | fd_kill (EV_P_ int fd) |
787 | fd_kill (EV_P_ int fd) |
410 | { |
788 | { |
411 | struct ev_io *w; |
789 | ev_io *w; |
412 | |
790 | |
413 | while ((w = (struct ev_io *)anfds [fd].head)) |
791 | while ((w = (ev_io *)anfds [fd].head)) |
414 | { |
792 | { |
415 | ev_io_stop (EV_A_ w); |
793 | ev_io_stop (EV_A_ w); |
416 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
794 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
417 | } |
795 | } |
418 | } |
796 | } |
419 | |
797 | |
420 | static int |
798 | int inline_size |
421 | fd_valid (int fd) |
799 | fd_valid (int fd) |
422 | { |
800 | { |
423 | #ifdef WIN32 |
801 | #ifdef _WIN32 |
424 | return !!win32_get_osfhandle (fd); |
802 | return _get_osfhandle (fd) != -1; |
425 | #else |
803 | #else |
426 | return fcntl (fd, F_GETFD) != -1; |
804 | return fcntl (fd, F_GETFD) != -1; |
427 | #endif |
805 | #endif |
428 | } |
806 | } |
429 | |
807 | |
430 | /* called on EBADF to verify fds */ |
808 | /* called on EBADF to verify fds */ |
431 | static void |
809 | static void noinline |
432 | fd_ebadf (EV_P) |
810 | fd_ebadf (EV_P) |
433 | { |
811 | { |
434 | int fd; |
812 | int fd; |
435 | |
813 | |
436 | for (fd = 0; fd < anfdmax; ++fd) |
814 | for (fd = 0; fd < anfdmax; ++fd) |
437 | if (anfds [fd].events) |
815 | if (anfds [fd].events) |
438 | if (!fd_valid (fd) == -1 && errno == EBADF) |
816 | if (!fd_valid (fd) && errno == EBADF) |
439 | fd_kill (EV_A_ fd); |
817 | fd_kill (EV_A_ fd); |
440 | } |
818 | } |
441 | |
819 | |
442 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
820 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
443 | static void |
821 | static void noinline |
444 | fd_enomem (EV_P) |
822 | fd_enomem (EV_P) |
445 | { |
823 | { |
446 | int fd; |
824 | int fd; |
447 | |
825 | |
448 | for (fd = anfdmax; fd--; ) |
826 | for (fd = anfdmax; fd--; ) |
… | |
… | |
451 | fd_kill (EV_A_ fd); |
829 | fd_kill (EV_A_ fd); |
452 | return; |
830 | return; |
453 | } |
831 | } |
454 | } |
832 | } |
455 | |
833 | |
456 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
834 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
457 | static void |
835 | static void noinline |
458 | fd_rearm_all (EV_P) |
836 | fd_rearm_all (EV_P) |
459 | { |
837 | { |
460 | int fd; |
838 | int fd; |
461 | |
839 | |
462 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
463 | for (fd = 0; fd < anfdmax; ++fd) |
840 | for (fd = 0; fd < anfdmax; ++fd) |
464 | if (anfds [fd].events) |
841 | if (anfds [fd].events) |
465 | { |
842 | { |
466 | anfds [fd].events = 0; |
843 | anfds [fd].events = 0; |
|
|
844 | anfds [fd].emask = 0; |
467 | fd_change (EV_A_ fd); |
845 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
468 | } |
846 | } |
469 | } |
847 | } |
470 | |
848 | |
471 | /*****************************************************************************/ |
849 | /*****************************************************************************/ |
472 | |
850 | |
473 | static void |
851 | /* |
474 | upheap (WT *heap, int k) |
852 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
475 | { |
853 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
476 | WT w = heap [k]; |
854 | * the branching factor of the d-tree. |
|
|
855 | */ |
477 | |
856 | |
478 | while (k && heap [k >> 1]->at > w->at) |
857 | /* |
479 | { |
858 | * at the moment we allow libev the luxury of two heaps, |
480 | heap [k] = heap [k >> 1]; |
859 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
481 | ((W)heap [k])->active = k + 1; |
860 | * which is more cache-efficient. |
482 | k >>= 1; |
861 | * the difference is about 5% with 50000+ watchers. |
483 | } |
862 | */ |
|
|
863 | #if EV_USE_4HEAP |
484 | |
864 | |
485 | heap [k] = w; |
865 | #define DHEAP 4 |
486 | ((W)heap [k])->active = k + 1; |
866 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
867 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
868 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
487 | |
869 | |
488 | } |
870 | /* away from the root */ |
489 | |
871 | void inline_speed |
490 | static void |
|
|
491 | downheap (WT *heap, int N, int k) |
872 | downheap (ANHE *heap, int N, int k) |
492 | { |
873 | { |
493 | WT w = heap [k]; |
874 | ANHE he = heap [k]; |
|
|
875 | ANHE *E = heap + N + HEAP0; |
494 | |
876 | |
495 | while (k < (N >> 1)) |
877 | for (;;) |
496 | { |
878 | { |
497 | int j = k << 1; |
879 | ev_tstamp minat; |
|
|
880 | ANHE *minpos; |
|
|
881 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
498 | |
882 | |
499 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
883 | /* find minimum child */ |
|
|
884 | if (expect_true (pos + DHEAP - 1 < E)) |
500 | ++j; |
885 | { |
501 | |
886 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
502 | if (w->at <= heap [j]->at) |
887 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
888 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
889 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
890 | } |
|
|
891 | else if (pos < E) |
|
|
892 | { |
|
|
893 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
894 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
895 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
896 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
897 | } |
|
|
898 | else |
503 | break; |
899 | break; |
504 | |
900 | |
|
|
901 | if (ANHE_at (he) <= minat) |
|
|
902 | break; |
|
|
903 | |
|
|
904 | heap [k] = *minpos; |
|
|
905 | ev_active (ANHE_w (*minpos)) = k; |
|
|
906 | |
|
|
907 | k = minpos - heap; |
|
|
908 | } |
|
|
909 | |
|
|
910 | heap [k] = he; |
|
|
911 | ev_active (ANHE_w (he)) = k; |
|
|
912 | } |
|
|
913 | |
|
|
914 | #else /* 4HEAP */ |
|
|
915 | |
|
|
916 | #define HEAP0 1 |
|
|
917 | #define HPARENT(k) ((k) >> 1) |
|
|
918 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
919 | |
|
|
920 | /* away from the root */ |
|
|
921 | void inline_speed |
|
|
922 | downheap (ANHE *heap, int N, int k) |
|
|
923 | { |
|
|
924 | ANHE he = heap [k]; |
|
|
925 | |
|
|
926 | for (;;) |
|
|
927 | { |
|
|
928 | int c = k << 1; |
|
|
929 | |
|
|
930 | if (c > N + HEAP0 - 1) |
|
|
931 | break; |
|
|
932 | |
|
|
933 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
934 | ? 1 : 0; |
|
|
935 | |
|
|
936 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
937 | break; |
|
|
938 | |
505 | heap [k] = heap [j]; |
939 | heap [k] = heap [c]; |
506 | ((W)heap [k])->active = k + 1; |
940 | ev_active (ANHE_w (heap [k])) = k; |
|
|
941 | |
507 | k = j; |
942 | k = c; |
508 | } |
943 | } |
509 | |
944 | |
510 | heap [k] = w; |
945 | heap [k] = he; |
511 | ((W)heap [k])->active = k + 1; |
946 | ev_active (ANHE_w (he)) = k; |
|
|
947 | } |
|
|
948 | #endif |
|
|
949 | |
|
|
950 | /* towards the root */ |
|
|
951 | void inline_speed |
|
|
952 | upheap (ANHE *heap, int k) |
|
|
953 | { |
|
|
954 | ANHE he = heap [k]; |
|
|
955 | |
|
|
956 | for (;;) |
|
|
957 | { |
|
|
958 | int p = HPARENT (k); |
|
|
959 | |
|
|
960 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
961 | break; |
|
|
962 | |
|
|
963 | heap [k] = heap [p]; |
|
|
964 | ev_active (ANHE_w (heap [k])) = k; |
|
|
965 | k = p; |
|
|
966 | } |
|
|
967 | |
|
|
968 | heap [k] = he; |
|
|
969 | ev_active (ANHE_w (he)) = k; |
|
|
970 | } |
|
|
971 | |
|
|
972 | void inline_size |
|
|
973 | adjustheap (ANHE *heap, int N, int k) |
|
|
974 | { |
|
|
975 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
|
|
976 | upheap (heap, k); |
|
|
977 | else |
|
|
978 | downheap (heap, N, k); |
|
|
979 | } |
|
|
980 | |
|
|
981 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
982 | void inline_size |
|
|
983 | reheap (ANHE *heap, int N) |
|
|
984 | { |
|
|
985 | int i; |
|
|
986 | |
|
|
987 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
988 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
989 | for (i = 0; i < N; ++i) |
|
|
990 | upheap (heap, i + HEAP0); |
512 | } |
991 | } |
513 | |
992 | |
514 | /*****************************************************************************/ |
993 | /*****************************************************************************/ |
515 | |
994 | |
516 | typedef struct |
995 | typedef struct |
517 | { |
996 | { |
518 | WL head; |
997 | WL head; |
519 | sig_atomic_t volatile gotsig; |
998 | EV_ATOMIC_T gotsig; |
520 | } ANSIG; |
999 | } ANSIG; |
521 | |
1000 | |
522 | static ANSIG *signals; |
1001 | static ANSIG *signals; |
523 | static int signalmax; |
1002 | static int signalmax; |
524 | |
1003 | |
525 | static int sigpipe [2]; |
1004 | static EV_ATOMIC_T gotsig; |
526 | static sig_atomic_t volatile gotsig; |
1005 | |
527 | static struct ev_io sigev; |
1006 | /*****************************************************************************/ |
|
|
1007 | |
|
|
1008 | void inline_speed |
|
|
1009 | fd_intern (int fd) |
|
|
1010 | { |
|
|
1011 | #ifdef _WIN32 |
|
|
1012 | unsigned long arg = 1; |
|
|
1013 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
1014 | #else |
|
|
1015 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1016 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1017 | #endif |
|
|
1018 | } |
|
|
1019 | |
|
|
1020 | static void noinline |
|
|
1021 | evpipe_init (EV_P) |
|
|
1022 | { |
|
|
1023 | if (!ev_is_active (&pipeev)) |
|
|
1024 | { |
|
|
1025 | #if EV_USE_EVENTFD |
|
|
1026 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
1027 | { |
|
|
1028 | evpipe [0] = -1; |
|
|
1029 | fd_intern (evfd); |
|
|
1030 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
1031 | } |
|
|
1032 | else |
|
|
1033 | #endif |
|
|
1034 | { |
|
|
1035 | while (pipe (evpipe)) |
|
|
1036 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1037 | |
|
|
1038 | fd_intern (evpipe [0]); |
|
|
1039 | fd_intern (evpipe [1]); |
|
|
1040 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | ev_io_start (EV_A_ &pipeev); |
|
|
1044 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1045 | } |
|
|
1046 | } |
|
|
1047 | |
|
|
1048 | void inline_size |
|
|
1049 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1050 | { |
|
|
1051 | if (!*flag) |
|
|
1052 | { |
|
|
1053 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1054 | |
|
|
1055 | *flag = 1; |
|
|
1056 | |
|
|
1057 | #if EV_USE_EVENTFD |
|
|
1058 | if (evfd >= 0) |
|
|
1059 | { |
|
|
1060 | uint64_t counter = 1; |
|
|
1061 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1062 | } |
|
|
1063 | else |
|
|
1064 | #endif |
|
|
1065 | write (evpipe [1], &old_errno, 1); |
|
|
1066 | |
|
|
1067 | errno = old_errno; |
|
|
1068 | } |
|
|
1069 | } |
528 | |
1070 | |
529 | static void |
1071 | static void |
530 | signals_init (ANSIG *base, int count) |
1072 | pipecb (EV_P_ ev_io *iow, int revents) |
531 | { |
1073 | { |
532 | while (count--) |
1074 | #if EV_USE_EVENTFD |
|
|
1075 | if (evfd >= 0) |
|
|
1076 | { |
|
|
1077 | uint64_t counter; |
|
|
1078 | read (evfd, &counter, sizeof (uint64_t)); |
533 | { |
1079 | } |
534 | base->head = 0; |
1080 | else |
|
|
1081 | #endif |
|
|
1082 | { |
|
|
1083 | char dummy; |
|
|
1084 | read (evpipe [0], &dummy, 1); |
|
|
1085 | } |
|
|
1086 | |
|
|
1087 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1088 | { |
|
|
1089 | int signum; |
535 | base->gotsig = 0; |
1090 | gotsig = 0; |
536 | |
1091 | |
537 | ++base; |
1092 | for (signum = signalmax; signum--; ) |
|
|
1093 | if (signals [signum].gotsig) |
|
|
1094 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | #if EV_ASYNC_ENABLE |
|
|
1098 | if (gotasync) |
538 | } |
1099 | { |
|
|
1100 | int i; |
|
|
1101 | gotasync = 0; |
|
|
1102 | |
|
|
1103 | for (i = asynccnt; i--; ) |
|
|
1104 | if (asyncs [i]->sent) |
|
|
1105 | { |
|
|
1106 | asyncs [i]->sent = 0; |
|
|
1107 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1108 | } |
|
|
1109 | } |
|
|
1110 | #endif |
539 | } |
1111 | } |
|
|
1112 | |
|
|
1113 | /*****************************************************************************/ |
540 | |
1114 | |
541 | static void |
1115 | static void |
542 | sighandler (int signum) |
1116 | ev_sighandler (int signum) |
543 | { |
1117 | { |
|
|
1118 | #if EV_MULTIPLICITY |
|
|
1119 | struct ev_loop *loop = &default_loop_struct; |
|
|
1120 | #endif |
|
|
1121 | |
544 | #if WIN32 |
1122 | #if _WIN32 |
545 | signal (signum, sighandler); |
1123 | signal (signum, ev_sighandler); |
546 | #endif |
1124 | #endif |
547 | |
1125 | |
548 | signals [signum - 1].gotsig = 1; |
1126 | signals [signum - 1].gotsig = 1; |
549 | |
1127 | evpipe_write (EV_A_ &gotsig); |
550 | if (!gotsig) |
|
|
551 | { |
|
|
552 | int old_errno = errno; |
|
|
553 | gotsig = 1; |
|
|
554 | #ifdef WIN32 |
|
|
555 | send (sigpipe [1], &signum, 1, MSG_DONTWAIT); |
|
|
556 | #else |
|
|
557 | write (sigpipe [1], &signum, 1); |
|
|
558 | #endif |
|
|
559 | errno = old_errno; |
|
|
560 | } |
|
|
561 | } |
1128 | } |
562 | |
1129 | |
563 | void |
1130 | void noinline |
564 | ev_feed_signal_event (EV_P_ int signum) |
1131 | ev_feed_signal_event (EV_P_ int signum) |
565 | { |
1132 | { |
|
|
1133 | WL w; |
|
|
1134 | |
566 | #if EV_MULTIPLICITY |
1135 | #if EV_MULTIPLICITY |
567 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
1136 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
568 | #endif |
1137 | #endif |
569 | |
1138 | |
570 | --signum; |
1139 | --signum; |
571 | |
1140 | |
572 | if (signum < 0 || signum >= signalmax) |
1141 | if (signum < 0 || signum >= signalmax) |
… | |
… | |
576 | |
1145 | |
577 | for (w = signals [signum].head; w; w = w->next) |
1146 | for (w = signals [signum].head; w; w = w->next) |
578 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1147 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
579 | } |
1148 | } |
580 | |
1149 | |
581 | static void |
|
|
582 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
583 | { |
|
|
584 | WL w; |
|
|
585 | int signum; |
|
|
586 | |
|
|
587 | #ifdef WIN32 |
|
|
588 | recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); |
|
|
589 | #else |
|
|
590 | read (sigpipe [0], &revents, 1); |
|
|
591 | #endif |
|
|
592 | gotsig = 0; |
|
|
593 | |
|
|
594 | for (signum = signalmax; signum--; ) |
|
|
595 | if (signals [signum].gotsig) |
|
|
596 | sigevent (EV_A_ signum + 1); |
|
|
597 | } |
|
|
598 | |
|
|
599 | static void |
|
|
600 | siginit (EV_P) |
|
|
601 | { |
|
|
602 | #ifndef WIN32 |
|
|
603 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
604 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
605 | |
|
|
606 | /* rather than sort out wether we really need nb, set it */ |
|
|
607 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
608 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
609 | #endif |
|
|
610 | |
|
|
611 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
612 | ev_io_start (EV_A_ &sigev); |
|
|
613 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
614 | } |
|
|
615 | |
|
|
616 | /*****************************************************************************/ |
1150 | /*****************************************************************************/ |
617 | |
1151 | |
618 | static struct ev_child *childs [PID_HASHSIZE]; |
1152 | static WL childs [EV_PID_HASHSIZE]; |
619 | |
1153 | |
620 | #ifndef WIN32 |
1154 | #ifndef _WIN32 |
621 | |
1155 | |
622 | static struct ev_signal childev; |
1156 | static ev_signal childev; |
|
|
1157 | |
|
|
1158 | #ifndef WIFCONTINUED |
|
|
1159 | # define WIFCONTINUED(status) 0 |
|
|
1160 | #endif |
|
|
1161 | |
|
|
1162 | void inline_speed |
|
|
1163 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1164 | { |
|
|
1165 | ev_child *w; |
|
|
1166 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1167 | |
|
|
1168 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1169 | { |
|
|
1170 | if ((w->pid == pid || !w->pid) |
|
|
1171 | && (!traced || (w->flags & 1))) |
|
|
1172 | { |
|
|
1173 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1174 | w->rpid = pid; |
|
|
1175 | w->rstatus = status; |
|
|
1176 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1177 | } |
|
|
1178 | } |
|
|
1179 | } |
623 | |
1180 | |
624 | #ifndef WCONTINUED |
1181 | #ifndef WCONTINUED |
625 | # define WCONTINUED 0 |
1182 | # define WCONTINUED 0 |
626 | #endif |
1183 | #endif |
627 | |
1184 | |
628 | static void |
1185 | static void |
629 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
630 | { |
|
|
631 | struct ev_child *w; |
|
|
632 | |
|
|
633 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
634 | if (w->pid == pid || !w->pid) |
|
|
635 | { |
|
|
636 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
637 | w->rpid = pid; |
|
|
638 | w->rstatus = status; |
|
|
639 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
640 | } |
|
|
641 | } |
|
|
642 | |
|
|
643 | static void |
|
|
644 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1186 | childcb (EV_P_ ev_signal *sw, int revents) |
645 | { |
1187 | { |
646 | int pid, status; |
1188 | int pid, status; |
647 | |
1189 | |
|
|
1190 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
648 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1191 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
649 | { |
1192 | if (!WCONTINUED |
|
|
1193 | || errno != EINVAL |
|
|
1194 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1195 | return; |
|
|
1196 | |
650 | /* make sure we are called again until all childs have been reaped */ |
1197 | /* make sure we are called again until all children have been reaped */ |
|
|
1198 | /* we need to do it this way so that the callback gets called before we continue */ |
651 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1199 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
652 | |
1200 | |
653 | child_reap (EV_A_ sw, pid, pid, status); |
1201 | child_reap (EV_A_ pid, pid, status); |
|
|
1202 | if (EV_PID_HASHSIZE > 1) |
654 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1203 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
655 | } |
|
|
656 | } |
1204 | } |
657 | |
1205 | |
658 | #endif |
1206 | #endif |
659 | |
1207 | |
660 | /*****************************************************************************/ |
1208 | /*****************************************************************************/ |
661 | |
1209 | |
|
|
1210 | #if EV_USE_PORT |
|
|
1211 | # include "ev_port.c" |
|
|
1212 | #endif |
662 | #if EV_USE_KQUEUE |
1213 | #if EV_USE_KQUEUE |
663 | # include "ev_kqueue.c" |
1214 | # include "ev_kqueue.c" |
664 | #endif |
1215 | #endif |
665 | #if EV_USE_EPOLL |
1216 | #if EV_USE_EPOLL |
666 | # include "ev_epoll.c" |
1217 | # include "ev_epoll.c" |
… | |
… | |
683 | { |
1234 | { |
684 | return EV_VERSION_MINOR; |
1235 | return EV_VERSION_MINOR; |
685 | } |
1236 | } |
686 | |
1237 | |
687 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1238 | /* return true if we are running with elevated privileges and should ignore env variables */ |
688 | static int |
1239 | int inline_size |
689 | enable_secure (void) |
1240 | enable_secure (void) |
690 | { |
1241 | { |
691 | #ifdef WIN32 |
1242 | #ifdef _WIN32 |
692 | return 0; |
1243 | return 0; |
693 | #else |
1244 | #else |
694 | return getuid () != geteuid () |
1245 | return getuid () != geteuid () |
695 | || getgid () != getegid (); |
1246 | || getgid () != getegid (); |
696 | #endif |
1247 | #endif |
697 | } |
1248 | } |
698 | |
1249 | |
699 | int |
1250 | unsigned int |
700 | ev_method (EV_P) |
1251 | ev_supported_backends (void) |
701 | { |
1252 | { |
702 | return method; |
1253 | unsigned int flags = 0; |
703 | } |
|
|
704 | |
1254 | |
705 | static void |
1255 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
706 | loop_init (EV_P_ int methods) |
1256 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1257 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1258 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1259 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1260 | |
|
|
1261 | return flags; |
|
|
1262 | } |
|
|
1263 | |
|
|
1264 | unsigned int |
|
|
1265 | ev_recommended_backends (void) |
707 | { |
1266 | { |
708 | if (!method) |
1267 | unsigned int flags = ev_supported_backends (); |
|
|
1268 | |
|
|
1269 | #ifndef __NetBSD__ |
|
|
1270 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1271 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1272 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1273 | #endif |
|
|
1274 | #ifdef __APPLE__ |
|
|
1275 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1276 | flags &= ~EVBACKEND_POLL; |
|
|
1277 | #endif |
|
|
1278 | |
|
|
1279 | return flags; |
|
|
1280 | } |
|
|
1281 | |
|
|
1282 | unsigned int |
|
|
1283 | ev_embeddable_backends (void) |
|
|
1284 | { |
|
|
1285 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1286 | |
|
|
1287 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1288 | /* please fix it and tell me how to detect the fix */ |
|
|
1289 | flags &= ~EVBACKEND_EPOLL; |
|
|
1290 | |
|
|
1291 | return flags; |
|
|
1292 | } |
|
|
1293 | |
|
|
1294 | unsigned int |
|
|
1295 | ev_backend (EV_P) |
|
|
1296 | { |
|
|
1297 | return backend; |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | unsigned int |
|
|
1301 | ev_loop_count (EV_P) |
|
|
1302 | { |
|
|
1303 | return loop_count; |
|
|
1304 | } |
|
|
1305 | |
|
|
1306 | void |
|
|
1307 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1308 | { |
|
|
1309 | io_blocktime = interval; |
|
|
1310 | } |
|
|
1311 | |
|
|
1312 | void |
|
|
1313 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1314 | { |
|
|
1315 | timeout_blocktime = interval; |
|
|
1316 | } |
|
|
1317 | |
|
|
1318 | static void noinline |
|
|
1319 | loop_init (EV_P_ unsigned int flags) |
|
|
1320 | { |
|
|
1321 | if (!backend) |
709 | { |
1322 | { |
710 | #if EV_USE_MONOTONIC |
1323 | #if EV_USE_MONOTONIC |
711 | { |
1324 | { |
712 | struct timespec ts; |
1325 | struct timespec ts; |
713 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1326 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
714 | have_monotonic = 1; |
1327 | have_monotonic = 1; |
715 | } |
1328 | } |
716 | #endif |
1329 | #endif |
717 | |
1330 | |
718 | rt_now = ev_time (); |
1331 | ev_rt_now = ev_time (); |
719 | mn_now = get_clock (); |
1332 | mn_now = get_clock (); |
720 | now_floor = mn_now; |
1333 | now_floor = mn_now; |
721 | rtmn_diff = rt_now - mn_now; |
1334 | rtmn_diff = ev_rt_now - mn_now; |
722 | |
1335 | |
723 | if (methods == EVMETHOD_AUTO) |
1336 | io_blocktime = 0.; |
724 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
1337 | timeout_blocktime = 0.; |
|
|
1338 | backend = 0; |
|
|
1339 | backend_fd = -1; |
|
|
1340 | gotasync = 0; |
|
|
1341 | #if EV_USE_INOTIFY |
|
|
1342 | fs_fd = -2; |
|
|
1343 | #endif |
|
|
1344 | |
|
|
1345 | /* pid check not overridable via env */ |
|
|
1346 | #ifndef _WIN32 |
|
|
1347 | if (flags & EVFLAG_FORKCHECK) |
|
|
1348 | curpid = getpid (); |
|
|
1349 | #endif |
|
|
1350 | |
|
|
1351 | if (!(flags & EVFLAG_NOENV) |
|
|
1352 | && !enable_secure () |
|
|
1353 | && getenv ("LIBEV_FLAGS")) |
725 | methods = atoi (getenv ("LIBEV_METHODS")); |
1354 | flags = atoi (getenv ("LIBEV_FLAGS")); |
726 | else |
|
|
727 | methods = EVMETHOD_ANY; |
|
|
728 | |
1355 | |
729 | method = 0; |
1356 | if (!(flags & 0x0000ffffU)) |
730 | #if EV_USE_WIN32 |
1357 | flags |= ev_recommended_backends (); |
731 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
1358 | |
|
|
1359 | #if EV_USE_PORT |
|
|
1360 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
732 | #endif |
1361 | #endif |
733 | #if EV_USE_KQUEUE |
1362 | #if EV_USE_KQUEUE |
734 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
1363 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
735 | #endif |
1364 | #endif |
736 | #if EV_USE_EPOLL |
1365 | #if EV_USE_EPOLL |
737 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
1366 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
738 | #endif |
1367 | #endif |
739 | #if EV_USE_POLL |
1368 | #if EV_USE_POLL |
740 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
1369 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
741 | #endif |
1370 | #endif |
742 | #if EV_USE_SELECT |
1371 | #if EV_USE_SELECT |
743 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
1372 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
744 | #endif |
1373 | #endif |
745 | |
1374 | |
746 | ev_watcher_init (&sigev, sigcb); |
1375 | ev_init (&pipeev, pipecb); |
747 | ev_set_priority (&sigev, EV_MAXPRI); |
1376 | ev_set_priority (&pipeev, EV_MAXPRI); |
748 | } |
1377 | } |
749 | } |
1378 | } |
750 | |
1379 | |
751 | void |
1380 | static void noinline |
752 | loop_destroy (EV_P) |
1381 | loop_destroy (EV_P) |
753 | { |
1382 | { |
754 | int i; |
1383 | int i; |
755 | |
1384 | |
|
|
1385 | if (ev_is_active (&pipeev)) |
|
|
1386 | { |
|
|
1387 | ev_ref (EV_A); /* signal watcher */ |
|
|
1388 | ev_io_stop (EV_A_ &pipeev); |
|
|
1389 | |
|
|
1390 | #if EV_USE_EVENTFD |
|
|
1391 | if (evfd >= 0) |
|
|
1392 | close (evfd); |
|
|
1393 | #endif |
|
|
1394 | |
|
|
1395 | if (evpipe [0] >= 0) |
|
|
1396 | { |
|
|
1397 | close (evpipe [0]); |
|
|
1398 | close (evpipe [1]); |
|
|
1399 | } |
|
|
1400 | } |
|
|
1401 | |
756 | #if EV_USE_WIN32 |
1402 | #if EV_USE_INOTIFY |
757 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
1403 | if (fs_fd >= 0) |
|
|
1404 | close (fs_fd); |
|
|
1405 | #endif |
|
|
1406 | |
|
|
1407 | if (backend_fd >= 0) |
|
|
1408 | close (backend_fd); |
|
|
1409 | |
|
|
1410 | #if EV_USE_PORT |
|
|
1411 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
758 | #endif |
1412 | #endif |
759 | #if EV_USE_KQUEUE |
1413 | #if EV_USE_KQUEUE |
760 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
1414 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
761 | #endif |
1415 | #endif |
762 | #if EV_USE_EPOLL |
1416 | #if EV_USE_EPOLL |
763 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
1417 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
764 | #endif |
1418 | #endif |
765 | #if EV_USE_POLL |
1419 | #if EV_USE_POLL |
766 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
1420 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
767 | #endif |
1421 | #endif |
768 | #if EV_USE_SELECT |
1422 | #if EV_USE_SELECT |
769 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
1423 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
770 | #endif |
1424 | #endif |
771 | |
1425 | |
772 | for (i = NUMPRI; i--; ) |
1426 | for (i = NUMPRI; i--; ) |
|
|
1427 | { |
773 | array_free (pending, [i]); |
1428 | array_free (pending, [i]); |
|
|
1429 | #if EV_IDLE_ENABLE |
|
|
1430 | array_free (idle, [i]); |
|
|
1431 | #endif |
|
|
1432 | } |
|
|
1433 | |
|
|
1434 | ev_free (anfds); anfdmax = 0; |
774 | |
1435 | |
775 | /* have to use the microsoft-never-gets-it-right macro */ |
1436 | /* have to use the microsoft-never-gets-it-right macro */ |
776 | array_free_microshit (fdchange); |
1437 | array_free (fdchange, EMPTY); |
777 | array_free_microshit (timer); |
1438 | array_free (timer, EMPTY); |
778 | array_free_microshit (periodic); |
1439 | #if EV_PERIODIC_ENABLE |
779 | array_free_microshit (idle); |
1440 | array_free (periodic, EMPTY); |
780 | array_free_microshit (prepare); |
1441 | #endif |
781 | array_free_microshit (check); |
1442 | #if EV_FORK_ENABLE |
|
|
1443 | array_free (fork, EMPTY); |
|
|
1444 | #endif |
|
|
1445 | array_free (prepare, EMPTY); |
|
|
1446 | array_free (check, EMPTY); |
|
|
1447 | #if EV_ASYNC_ENABLE |
|
|
1448 | array_free (async, EMPTY); |
|
|
1449 | #endif |
782 | |
1450 | |
783 | method = 0; |
1451 | backend = 0; |
784 | } |
1452 | } |
785 | |
1453 | |
786 | static void |
1454 | #if EV_USE_INOTIFY |
|
|
1455 | void inline_size infy_fork (EV_P); |
|
|
1456 | #endif |
|
|
1457 | |
|
|
1458 | void inline_size |
787 | loop_fork (EV_P) |
1459 | loop_fork (EV_P) |
788 | { |
1460 | { |
|
|
1461 | #if EV_USE_PORT |
|
|
1462 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1463 | #endif |
|
|
1464 | #if EV_USE_KQUEUE |
|
|
1465 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1466 | #endif |
789 | #if EV_USE_EPOLL |
1467 | #if EV_USE_EPOLL |
790 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
1468 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
791 | #endif |
1469 | #endif |
792 | #if EV_USE_KQUEUE |
1470 | #if EV_USE_INOTIFY |
793 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
1471 | infy_fork (EV_A); |
794 | #endif |
1472 | #endif |
795 | |
1473 | |
796 | if (ev_is_active (&sigev)) |
1474 | if (ev_is_active (&pipeev)) |
797 | { |
1475 | { |
798 | /* default loop */ |
1476 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1477 | /* while we modify the fd vars */ |
|
|
1478 | gotsig = 1; |
|
|
1479 | #if EV_ASYNC_ENABLE |
|
|
1480 | gotasync = 1; |
|
|
1481 | #endif |
799 | |
1482 | |
800 | ev_ref (EV_A); |
1483 | ev_ref (EV_A); |
801 | ev_io_stop (EV_A_ &sigev); |
1484 | ev_io_stop (EV_A_ &pipeev); |
|
|
1485 | |
|
|
1486 | #if EV_USE_EVENTFD |
|
|
1487 | if (evfd >= 0) |
|
|
1488 | close (evfd); |
|
|
1489 | #endif |
|
|
1490 | |
|
|
1491 | if (evpipe [0] >= 0) |
|
|
1492 | { |
802 | close (sigpipe [0]); |
1493 | close (evpipe [0]); |
803 | close (sigpipe [1]); |
1494 | close (evpipe [1]); |
|
|
1495 | } |
804 | |
1496 | |
805 | while (pipe (sigpipe)) |
|
|
806 | syserr ("(libev) error creating pipe"); |
|
|
807 | |
|
|
808 | siginit (EV_A); |
1497 | evpipe_init (EV_A); |
|
|
1498 | /* now iterate over everything, in case we missed something */ |
|
|
1499 | pipecb (EV_A_ &pipeev, EV_READ); |
809 | } |
1500 | } |
810 | |
1501 | |
811 | postfork = 0; |
1502 | postfork = 0; |
812 | } |
1503 | } |
|
|
1504 | |
|
|
1505 | #if EV_MULTIPLICITY |
|
|
1506 | |
|
|
1507 | struct ev_loop * |
|
|
1508 | ev_loop_new (unsigned int flags) |
|
|
1509 | { |
|
|
1510 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1511 | |
|
|
1512 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1513 | |
|
|
1514 | loop_init (EV_A_ flags); |
|
|
1515 | |
|
|
1516 | if (ev_backend (EV_A)) |
|
|
1517 | return loop; |
|
|
1518 | |
|
|
1519 | return 0; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | void |
|
|
1523 | ev_loop_destroy (EV_P) |
|
|
1524 | { |
|
|
1525 | loop_destroy (EV_A); |
|
|
1526 | ev_free (loop); |
|
|
1527 | } |
|
|
1528 | |
|
|
1529 | void |
|
|
1530 | ev_loop_fork (EV_P) |
|
|
1531 | { |
|
|
1532 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1533 | } |
|
|
1534 | |
|
|
1535 | #if EV_VERIFY |
|
|
1536 | static void noinline |
|
|
1537 | verify_watcher (EV_P_ W w) |
|
|
1538 | { |
|
|
1539 | assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1540 | |
|
|
1541 | if (w->pending) |
|
|
1542 | assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1543 | } |
|
|
1544 | |
|
|
1545 | static void noinline |
|
|
1546 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1547 | { |
|
|
1548 | int i; |
|
|
1549 | |
|
|
1550 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1551 | { |
|
|
1552 | assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1553 | assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1554 | assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1555 | |
|
|
1556 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1557 | } |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | static void noinline |
|
|
1561 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1562 | { |
|
|
1563 | while (cnt--) |
|
|
1564 | { |
|
|
1565 | assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1566 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1567 | } |
|
|
1568 | } |
|
|
1569 | #endif |
|
|
1570 | |
|
|
1571 | void |
|
|
1572 | ev_loop_verify (EV_P) |
|
|
1573 | { |
|
|
1574 | #if EV_VERIFY |
|
|
1575 | int i; |
|
|
1576 | WL w; |
|
|
1577 | |
|
|
1578 | assert (activecnt >= -1); |
|
|
1579 | |
|
|
1580 | assert (fdchangemax >= fdchangecnt); |
|
|
1581 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1582 | assert (("negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1583 | |
|
|
1584 | assert (anfdmax >= 0); |
|
|
1585 | for (i = 0; i < anfdmax; ++i) |
|
|
1586 | for (w = anfds [i].head; w; w = w->next) |
|
|
1587 | { |
|
|
1588 | verify_watcher (EV_A_ (W)w); |
|
|
1589 | assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
1590 | assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
1591 | } |
|
|
1592 | |
|
|
1593 | assert (timermax >= timercnt); |
|
|
1594 | verify_heap (EV_A_ timers, timercnt); |
|
|
1595 | |
|
|
1596 | #if EV_PERIODIC_ENABLE |
|
|
1597 | assert (periodicmax >= periodiccnt); |
|
|
1598 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1599 | #endif |
|
|
1600 | |
|
|
1601 | for (i = NUMPRI; i--; ) |
|
|
1602 | { |
|
|
1603 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1604 | #if EV_IDLE_ENABLE |
|
|
1605 | assert (idleall >= 0); |
|
|
1606 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1607 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1608 | #endif |
|
|
1609 | } |
|
|
1610 | |
|
|
1611 | #if EV_FORK_ENABLE |
|
|
1612 | assert (forkmax >= forkcnt); |
|
|
1613 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1614 | #endif |
|
|
1615 | |
|
|
1616 | #if EV_ASYNC_ENABLE |
|
|
1617 | assert (asyncmax >= asynccnt); |
|
|
1618 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1619 | #endif |
|
|
1620 | |
|
|
1621 | assert (preparemax >= preparecnt); |
|
|
1622 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1623 | |
|
|
1624 | assert (checkmax >= checkcnt); |
|
|
1625 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1626 | |
|
|
1627 | # if 0 |
|
|
1628 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1629 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
|
|
1630 | # endif |
|
|
1631 | #endif |
|
|
1632 | } |
|
|
1633 | |
|
|
1634 | #endif /* multiplicity */ |
813 | |
1635 | |
814 | #if EV_MULTIPLICITY |
1636 | #if EV_MULTIPLICITY |
815 | struct ev_loop * |
1637 | struct ev_loop * |
816 | ev_loop_new (int methods) |
1638 | ev_default_loop_init (unsigned int flags) |
817 | { |
1639 | #else |
818 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1640 | int |
819 | |
1641 | ev_default_loop (unsigned int flags) |
820 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
821 | |
|
|
822 | loop_init (EV_A_ methods); |
|
|
823 | |
|
|
824 | if (ev_method (EV_A)) |
|
|
825 | return loop; |
|
|
826 | |
|
|
827 | return 0; |
|
|
828 | } |
|
|
829 | |
|
|
830 | void |
|
|
831 | ev_loop_destroy (EV_P) |
|
|
832 | { |
|
|
833 | loop_destroy (EV_A); |
|
|
834 | ev_free (loop); |
|
|
835 | } |
|
|
836 | |
|
|
837 | void |
|
|
838 | ev_loop_fork (EV_P) |
|
|
839 | { |
|
|
840 | postfork = 1; |
|
|
841 | } |
|
|
842 | |
|
|
843 | #endif |
1642 | #endif |
844 | |
1643 | { |
|
|
1644 | if (!ev_default_loop_ptr) |
|
|
1645 | { |
845 | #if EV_MULTIPLICITY |
1646 | #if EV_MULTIPLICITY |
846 | struct ev_loop default_loop_struct; |
1647 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
847 | static struct ev_loop *default_loop; |
|
|
848 | |
|
|
849 | struct ev_loop * |
|
|
850 | #else |
1648 | #else |
851 | static int default_loop; |
|
|
852 | |
|
|
853 | int |
|
|
854 | #endif |
|
|
855 | ev_default_loop (int methods) |
|
|
856 | { |
|
|
857 | if (sigpipe [0] == sigpipe [1]) |
|
|
858 | if (pipe (sigpipe)) |
|
|
859 | return 0; |
|
|
860 | |
|
|
861 | if (!default_loop) |
|
|
862 | { |
|
|
863 | #if EV_MULTIPLICITY |
|
|
864 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
865 | #else |
|
|
866 | default_loop = 1; |
1649 | ev_default_loop_ptr = 1; |
867 | #endif |
1650 | #endif |
868 | |
1651 | |
869 | loop_init (EV_A_ methods); |
1652 | loop_init (EV_A_ flags); |
870 | |
1653 | |
871 | if (ev_method (EV_A)) |
1654 | if (ev_backend (EV_A)) |
872 | { |
1655 | { |
873 | siginit (EV_A); |
|
|
874 | |
|
|
875 | #ifndef WIN32 |
1656 | #ifndef _WIN32 |
876 | ev_signal_init (&childev, childcb, SIGCHLD); |
1657 | ev_signal_init (&childev, childcb, SIGCHLD); |
877 | ev_set_priority (&childev, EV_MAXPRI); |
1658 | ev_set_priority (&childev, EV_MAXPRI); |
878 | ev_signal_start (EV_A_ &childev); |
1659 | ev_signal_start (EV_A_ &childev); |
879 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1660 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
880 | #endif |
1661 | #endif |
881 | } |
1662 | } |
882 | else |
1663 | else |
883 | default_loop = 0; |
1664 | ev_default_loop_ptr = 0; |
884 | } |
1665 | } |
885 | |
1666 | |
886 | return default_loop; |
1667 | return ev_default_loop_ptr; |
887 | } |
1668 | } |
888 | |
1669 | |
889 | void |
1670 | void |
890 | ev_default_destroy (void) |
1671 | ev_default_destroy (void) |
891 | { |
1672 | { |
892 | #if EV_MULTIPLICITY |
1673 | #if EV_MULTIPLICITY |
893 | struct ev_loop *loop = default_loop; |
1674 | struct ev_loop *loop = ev_default_loop_ptr; |
894 | #endif |
1675 | #endif |
895 | |
1676 | |
|
|
1677 | ev_default_loop_ptr = 0; |
|
|
1678 | |
896 | #ifndef WIN32 |
1679 | #ifndef _WIN32 |
897 | ev_ref (EV_A); /* child watcher */ |
1680 | ev_ref (EV_A); /* child watcher */ |
898 | ev_signal_stop (EV_A_ &childev); |
1681 | ev_signal_stop (EV_A_ &childev); |
899 | #endif |
1682 | #endif |
900 | |
1683 | |
901 | ev_ref (EV_A); /* signal watcher */ |
|
|
902 | ev_io_stop (EV_A_ &sigev); |
|
|
903 | |
|
|
904 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
905 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
906 | |
|
|
907 | loop_destroy (EV_A); |
1684 | loop_destroy (EV_A); |
908 | } |
1685 | } |
909 | |
1686 | |
910 | void |
1687 | void |
911 | ev_default_fork (void) |
1688 | ev_default_fork (void) |
912 | { |
1689 | { |
913 | #if EV_MULTIPLICITY |
1690 | #if EV_MULTIPLICITY |
914 | struct ev_loop *loop = default_loop; |
1691 | struct ev_loop *loop = ev_default_loop_ptr; |
915 | #endif |
1692 | #endif |
916 | |
1693 | |
917 | if (method) |
1694 | postfork = 1; /* must be in line with ev_loop_fork */ |
918 | postfork = 1; |
|
|
919 | } |
1695 | } |
920 | |
1696 | |
921 | /*****************************************************************************/ |
1697 | /*****************************************************************************/ |
922 | |
1698 | |
923 | static int |
1699 | void |
924 | any_pending (EV_P) |
1700 | ev_invoke (EV_P_ void *w, int revents) |
925 | { |
1701 | { |
926 | int pri; |
1702 | EV_CB_INVOKE ((W)w, revents); |
927 | |
|
|
928 | for (pri = NUMPRI; pri--; ) |
|
|
929 | if (pendingcnt [pri]) |
|
|
930 | return 1; |
|
|
931 | |
|
|
932 | return 0; |
|
|
933 | } |
1703 | } |
934 | |
1704 | |
935 | static void |
1705 | void inline_speed |
936 | call_pending (EV_P) |
1706 | call_pending (EV_P) |
937 | { |
1707 | { |
938 | int pri; |
1708 | int pri; |
939 | |
1709 | |
940 | for (pri = NUMPRI; pri--; ) |
1710 | for (pri = NUMPRI; pri--; ) |
941 | while (pendingcnt [pri]) |
1711 | while (pendingcnt [pri]) |
942 | { |
1712 | { |
943 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1713 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
944 | |
1714 | |
945 | if (p->w) |
1715 | if (expect_true (p->w)) |
946 | { |
1716 | { |
|
|
1717 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1718 | |
947 | p->w->pending = 0; |
1719 | p->w->pending = 0; |
948 | p->w->cb (EV_A_ p->w, p->events); |
1720 | EV_CB_INVOKE (p->w, p->events); |
|
|
1721 | EV_FREQUENT_CHECK; |
949 | } |
1722 | } |
950 | } |
1723 | } |
951 | } |
1724 | } |
952 | |
1725 | |
953 | static void |
1726 | #if EV_IDLE_ENABLE |
|
|
1727 | void inline_size |
|
|
1728 | idle_reify (EV_P) |
|
|
1729 | { |
|
|
1730 | if (expect_false (idleall)) |
|
|
1731 | { |
|
|
1732 | int pri; |
|
|
1733 | |
|
|
1734 | for (pri = NUMPRI; pri--; ) |
|
|
1735 | { |
|
|
1736 | if (pendingcnt [pri]) |
|
|
1737 | break; |
|
|
1738 | |
|
|
1739 | if (idlecnt [pri]) |
|
|
1740 | { |
|
|
1741 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1742 | break; |
|
|
1743 | } |
|
|
1744 | } |
|
|
1745 | } |
|
|
1746 | } |
|
|
1747 | #endif |
|
|
1748 | |
|
|
1749 | void inline_size |
954 | timers_reify (EV_P) |
1750 | timers_reify (EV_P) |
955 | { |
1751 | { |
|
|
1752 | EV_FREQUENT_CHECK; |
|
|
1753 | |
956 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
1754 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
957 | { |
1755 | { |
958 | struct ev_timer *w = timers [0]; |
1756 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
959 | |
1757 | |
960 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
1758 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
961 | |
1759 | |
962 | /* first reschedule or stop timer */ |
1760 | /* first reschedule or stop timer */ |
963 | if (w->repeat) |
1761 | if (w->repeat) |
964 | { |
1762 | { |
|
|
1763 | ev_at (w) += w->repeat; |
|
|
1764 | if (ev_at (w) < mn_now) |
|
|
1765 | ev_at (w) = mn_now; |
|
|
1766 | |
965 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1767 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
966 | ((WT)w)->at = mn_now + w->repeat; |
1768 | |
|
|
1769 | ANHE_at_cache (timers [HEAP0]); |
967 | downheap ((WT *)timers, timercnt, 0); |
1770 | downheap (timers, timercnt, HEAP0); |
968 | } |
1771 | } |
969 | else |
1772 | else |
970 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1773 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
971 | |
1774 | |
|
|
1775 | EV_FREQUENT_CHECK; |
972 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
1776 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
973 | } |
1777 | } |
974 | } |
1778 | } |
975 | |
1779 | |
976 | static void |
1780 | #if EV_PERIODIC_ENABLE |
|
|
1781 | void inline_size |
977 | periodics_reify (EV_P) |
1782 | periodics_reify (EV_P) |
978 | { |
1783 | { |
|
|
1784 | EV_FREQUENT_CHECK; |
|
|
1785 | |
979 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
1786 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
980 | { |
1787 | { |
981 | struct ev_periodic *w = periodics [0]; |
1788 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
982 | |
1789 | |
983 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
1790 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
984 | |
1791 | |
985 | /* first reschedule or stop timer */ |
1792 | /* first reschedule or stop timer */ |
986 | if (w->reschedule_cb) |
1793 | if (w->reschedule_cb) |
987 | { |
1794 | { |
988 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); |
1795 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
989 | |
1796 | |
990 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); |
1797 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1798 | |
|
|
1799 | ANHE_at_cache (periodics [HEAP0]); |
991 | downheap ((WT *)periodics, periodiccnt, 0); |
1800 | downheap (periodics, periodiccnt, HEAP0); |
992 | } |
1801 | } |
993 | else if (w->interval) |
1802 | else if (w->interval) |
994 | { |
1803 | { |
995 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
1804 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
996 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
1805 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1806 | /* this might happen because of floating point inexactness */ |
|
|
1807 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1808 | { |
|
|
1809 | ev_at (w) += w->interval; |
|
|
1810 | |
|
|
1811 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
1812 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
1813 | /* has effectively asked to get triggered more often than possible */ |
|
|
1814 | if (ev_at (w) < ev_rt_now) |
|
|
1815 | ev_at (w) = ev_rt_now; |
|
|
1816 | } |
|
|
1817 | |
|
|
1818 | ANHE_at_cache (periodics [HEAP0]); |
997 | downheap ((WT *)periodics, periodiccnt, 0); |
1819 | downheap (periodics, periodiccnt, HEAP0); |
998 | } |
1820 | } |
999 | else |
1821 | else |
1000 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1822 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1001 | |
1823 | |
|
|
1824 | EV_FREQUENT_CHECK; |
1002 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
1825 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
1003 | } |
1826 | } |
1004 | } |
1827 | } |
1005 | |
1828 | |
1006 | static void |
1829 | static void noinline |
1007 | periodics_reschedule (EV_P) |
1830 | periodics_reschedule (EV_P) |
1008 | { |
1831 | { |
1009 | int i; |
1832 | int i; |
1010 | |
1833 | |
1011 | /* adjust periodics after time jump */ |
1834 | /* adjust periodics after time jump */ |
1012 | for (i = 0; i < periodiccnt; ++i) |
1835 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
1013 | { |
1836 | { |
1014 | struct ev_periodic *w = periodics [i]; |
1837 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
1015 | |
1838 | |
1016 | if (w->reschedule_cb) |
1839 | if (w->reschedule_cb) |
1017 | ((WT)w)->at = w->reschedule_cb (w, rt_now); |
1840 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1018 | else if (w->interval) |
1841 | else if (w->interval) |
1019 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
1842 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1020 | } |
|
|
1021 | |
1843 | |
1022 | /* now rebuild the heap */ |
1844 | ANHE_at_cache (periodics [i]); |
1023 | for (i = periodiccnt >> 1; i--; ) |
|
|
1024 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | inline int |
|
|
1028 | time_update_monotonic (EV_P) |
|
|
1029 | { |
|
|
1030 | mn_now = get_clock (); |
|
|
1031 | |
|
|
1032 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1033 | { |
1845 | } |
1034 | rt_now = rtmn_diff + mn_now; |
|
|
1035 | return 0; |
|
|
1036 | } |
|
|
1037 | else |
|
|
1038 | { |
|
|
1039 | now_floor = mn_now; |
|
|
1040 | rt_now = ev_time (); |
|
|
1041 | return 1; |
|
|
1042 | } |
|
|
1043 | } |
|
|
1044 | |
1846 | |
1045 | static void |
1847 | reheap (periodics, periodiccnt); |
1046 | time_update (EV_P) |
1848 | } |
|
|
1849 | #endif |
|
|
1850 | |
|
|
1851 | void inline_speed |
|
|
1852 | time_update (EV_P_ ev_tstamp max_block) |
1047 | { |
1853 | { |
1048 | int i; |
1854 | int i; |
1049 | |
1855 | |
1050 | #if EV_USE_MONOTONIC |
1856 | #if EV_USE_MONOTONIC |
1051 | if (expect_true (have_monotonic)) |
1857 | if (expect_true (have_monotonic)) |
1052 | { |
1858 | { |
1053 | if (time_update_monotonic (EV_A)) |
1859 | ev_tstamp odiff = rtmn_diff; |
|
|
1860 | |
|
|
1861 | mn_now = get_clock (); |
|
|
1862 | |
|
|
1863 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1864 | /* interpolate in the meantime */ |
|
|
1865 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1054 | { |
1866 | { |
1055 | ev_tstamp odiff = rtmn_diff; |
1867 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1868 | return; |
|
|
1869 | } |
1056 | |
1870 | |
|
|
1871 | now_floor = mn_now; |
|
|
1872 | ev_rt_now = ev_time (); |
|
|
1873 | |
1057 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1874 | /* loop a few times, before making important decisions. |
|
|
1875 | * on the choice of "4": one iteration isn't enough, |
|
|
1876 | * in case we get preempted during the calls to |
|
|
1877 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1878 | * to succeed in that case, though. and looping a few more times |
|
|
1879 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1880 | * in the unlikely event of having been preempted here. |
|
|
1881 | */ |
|
|
1882 | for (i = 4; --i; ) |
|
|
1883 | { |
|
|
1884 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1885 | |
|
|
1886 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
1887 | return; /* all is well */ |
|
|
1888 | |
|
|
1889 | ev_rt_now = ev_time (); |
|
|
1890 | mn_now = get_clock (); |
|
|
1891 | now_floor = mn_now; |
|
|
1892 | } |
|
|
1893 | |
|
|
1894 | # if EV_PERIODIC_ENABLE |
|
|
1895 | periodics_reschedule (EV_A); |
|
|
1896 | # endif |
|
|
1897 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1898 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1899 | } |
|
|
1900 | else |
|
|
1901 | #endif |
|
|
1902 | { |
|
|
1903 | ev_rt_now = ev_time (); |
|
|
1904 | |
|
|
1905 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1906 | { |
|
|
1907 | #if EV_PERIODIC_ENABLE |
|
|
1908 | periodics_reschedule (EV_A); |
|
|
1909 | #endif |
|
|
1910 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1911 | for (i = 0; i < timercnt; ++i) |
1058 | { |
1912 | { |
1059 | rtmn_diff = rt_now - mn_now; |
1913 | ANHE *he = timers + i + HEAP0; |
1060 | |
1914 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
1061 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
1915 | ANHE_at_cache (*he); |
1062 | return; /* all is well */ |
|
|
1063 | |
|
|
1064 | rt_now = ev_time (); |
|
|
1065 | mn_now = get_clock (); |
|
|
1066 | now_floor = mn_now; |
|
|
1067 | } |
1916 | } |
1068 | |
|
|
1069 | periodics_reschedule (EV_A); |
|
|
1070 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1071 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1072 | } |
1917 | } |
1073 | } |
|
|
1074 | else |
|
|
1075 | #endif |
|
|
1076 | { |
|
|
1077 | rt_now = ev_time (); |
|
|
1078 | |
1918 | |
1079 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1080 | { |
|
|
1081 | periodics_reschedule (EV_A); |
|
|
1082 | |
|
|
1083 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1084 | for (i = 0; i < timercnt; ++i) |
|
|
1085 | ((WT)timers [i])->at += rt_now - mn_now; |
|
|
1086 | } |
|
|
1087 | |
|
|
1088 | mn_now = rt_now; |
1919 | mn_now = ev_rt_now; |
1089 | } |
1920 | } |
1090 | } |
1921 | } |
1091 | |
1922 | |
1092 | void |
1923 | void |
1093 | ev_ref (EV_P) |
1924 | ev_ref (EV_P) |
… | |
… | |
1099 | ev_unref (EV_P) |
1930 | ev_unref (EV_P) |
1100 | { |
1931 | { |
1101 | --activecnt; |
1932 | --activecnt; |
1102 | } |
1933 | } |
1103 | |
1934 | |
|
|
1935 | void |
|
|
1936 | ev_now_update (EV_P) |
|
|
1937 | { |
|
|
1938 | time_update (EV_A_ 1e100); |
|
|
1939 | } |
|
|
1940 | |
1104 | static int loop_done; |
1941 | static int loop_done; |
1105 | |
1942 | |
1106 | void |
1943 | void |
1107 | ev_loop (EV_P_ int flags) |
1944 | ev_loop (EV_P_ int flags) |
1108 | { |
1945 | { |
1109 | double block; |
1946 | loop_done = EVUNLOOP_CANCEL; |
1110 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1947 | |
|
|
1948 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1111 | |
1949 | |
1112 | do |
1950 | do |
1113 | { |
1951 | { |
|
|
1952 | #if EV_VERIFY >= 2 |
|
|
1953 | ev_loop_verify (EV_A); |
|
|
1954 | #endif |
|
|
1955 | |
|
|
1956 | #ifndef _WIN32 |
|
|
1957 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1958 | if (expect_false (getpid () != curpid)) |
|
|
1959 | { |
|
|
1960 | curpid = getpid (); |
|
|
1961 | postfork = 1; |
|
|
1962 | } |
|
|
1963 | #endif |
|
|
1964 | |
|
|
1965 | #if EV_FORK_ENABLE |
|
|
1966 | /* we might have forked, so queue fork handlers */ |
|
|
1967 | if (expect_false (postfork)) |
|
|
1968 | if (forkcnt) |
|
|
1969 | { |
|
|
1970 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1971 | call_pending (EV_A); |
|
|
1972 | } |
|
|
1973 | #endif |
|
|
1974 | |
1114 | /* queue check watchers (and execute them) */ |
1975 | /* queue prepare watchers (and execute them) */ |
1115 | if (expect_false (preparecnt)) |
1976 | if (expect_false (preparecnt)) |
1116 | { |
1977 | { |
1117 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1978 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1118 | call_pending (EV_A); |
1979 | call_pending (EV_A); |
1119 | } |
1980 | } |
1120 | |
1981 | |
|
|
1982 | if (expect_false (!activecnt)) |
|
|
1983 | break; |
|
|
1984 | |
1121 | /* we might have forked, so reify kernel state if necessary */ |
1985 | /* we might have forked, so reify kernel state if necessary */ |
1122 | if (expect_false (postfork)) |
1986 | if (expect_false (postfork)) |
1123 | loop_fork (EV_A); |
1987 | loop_fork (EV_A); |
1124 | |
1988 | |
1125 | /* update fd-related kernel structures */ |
1989 | /* update fd-related kernel structures */ |
1126 | fd_reify (EV_A); |
1990 | fd_reify (EV_A); |
1127 | |
1991 | |
1128 | /* calculate blocking time */ |
1992 | /* calculate blocking time */ |
|
|
1993 | { |
|
|
1994 | ev_tstamp waittime = 0.; |
|
|
1995 | ev_tstamp sleeptime = 0.; |
1129 | |
1996 | |
1130 | /* we only need this for !monotonic clock or timers, but as we basically |
1997 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1131 | always have timers, we just calculate it always */ |
|
|
1132 | #if EV_USE_MONOTONIC |
|
|
1133 | if (expect_true (have_monotonic)) |
|
|
1134 | time_update_monotonic (EV_A); |
|
|
1135 | else |
|
|
1136 | #endif |
|
|
1137 | { |
1998 | { |
1138 | rt_now = ev_time (); |
1999 | /* update time to cancel out callback processing overhead */ |
1139 | mn_now = rt_now; |
2000 | time_update (EV_A_ 1e100); |
1140 | } |
|
|
1141 | |
2001 | |
1142 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
1143 | block = 0.; |
|
|
1144 | else |
|
|
1145 | { |
|
|
1146 | block = MAX_BLOCKTIME; |
2002 | waittime = MAX_BLOCKTIME; |
1147 | |
2003 | |
1148 | if (timercnt) |
2004 | if (timercnt) |
1149 | { |
2005 | { |
1150 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
2006 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1151 | if (block > to) block = to; |
2007 | if (waittime > to) waittime = to; |
1152 | } |
2008 | } |
1153 | |
2009 | |
|
|
2010 | #if EV_PERIODIC_ENABLE |
1154 | if (periodiccnt) |
2011 | if (periodiccnt) |
1155 | { |
2012 | { |
1156 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
2013 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1157 | if (block > to) block = to; |
2014 | if (waittime > to) waittime = to; |
1158 | } |
2015 | } |
|
|
2016 | #endif |
1159 | |
2017 | |
1160 | if (block < 0.) block = 0.; |
2018 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2019 | waittime = timeout_blocktime; |
|
|
2020 | |
|
|
2021 | sleeptime = waittime - backend_fudge; |
|
|
2022 | |
|
|
2023 | if (expect_true (sleeptime > io_blocktime)) |
|
|
2024 | sleeptime = io_blocktime; |
|
|
2025 | |
|
|
2026 | if (sleeptime) |
|
|
2027 | { |
|
|
2028 | ev_sleep (sleeptime); |
|
|
2029 | waittime -= sleeptime; |
|
|
2030 | } |
1161 | } |
2031 | } |
1162 | |
2032 | |
1163 | method_poll (EV_A_ block); |
2033 | ++loop_count; |
|
|
2034 | backend_poll (EV_A_ waittime); |
1164 | |
2035 | |
1165 | /* update rt_now, do magic */ |
2036 | /* update ev_rt_now, do magic */ |
1166 | time_update (EV_A); |
2037 | time_update (EV_A_ waittime + sleeptime); |
|
|
2038 | } |
1167 | |
2039 | |
1168 | /* queue pending timers and reschedule them */ |
2040 | /* queue pending timers and reschedule them */ |
1169 | timers_reify (EV_A); /* relative timers called last */ |
2041 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2042 | #if EV_PERIODIC_ENABLE |
1170 | periodics_reify (EV_A); /* absolute timers called first */ |
2043 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2044 | #endif |
1171 | |
2045 | |
|
|
2046 | #if EV_IDLE_ENABLE |
1172 | /* queue idle watchers unless io or timers are pending */ |
2047 | /* queue idle watchers unless other events are pending */ |
1173 | if (idlecnt && !any_pending (EV_A)) |
2048 | idle_reify (EV_A); |
1174 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
2049 | #endif |
1175 | |
2050 | |
1176 | /* queue check watchers, to be executed first */ |
2051 | /* queue check watchers, to be executed first */ |
1177 | if (checkcnt) |
2052 | if (expect_false (checkcnt)) |
1178 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2053 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1179 | |
2054 | |
1180 | call_pending (EV_A); |
2055 | call_pending (EV_A); |
1181 | } |
2056 | } |
1182 | while (activecnt && !loop_done); |
2057 | while (expect_true ( |
|
|
2058 | activecnt |
|
|
2059 | && !loop_done |
|
|
2060 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2061 | )); |
1183 | |
2062 | |
1184 | if (loop_done != 2) |
2063 | if (loop_done == EVUNLOOP_ONE) |
1185 | loop_done = 0; |
2064 | loop_done = EVUNLOOP_CANCEL; |
1186 | } |
2065 | } |
1187 | |
2066 | |
1188 | void |
2067 | void |
1189 | ev_unloop (EV_P_ int how) |
2068 | ev_unloop (EV_P_ int how) |
1190 | { |
2069 | { |
1191 | loop_done = how; |
2070 | loop_done = how; |
1192 | } |
2071 | } |
1193 | |
2072 | |
1194 | /*****************************************************************************/ |
2073 | /*****************************************************************************/ |
1195 | |
2074 | |
1196 | inline void |
2075 | void inline_size |
1197 | wlist_add (WL *head, WL elem) |
2076 | wlist_add (WL *head, WL elem) |
1198 | { |
2077 | { |
1199 | elem->next = *head; |
2078 | elem->next = *head; |
1200 | *head = elem; |
2079 | *head = elem; |
1201 | } |
2080 | } |
1202 | |
2081 | |
1203 | inline void |
2082 | void inline_size |
1204 | wlist_del (WL *head, WL elem) |
2083 | wlist_del (WL *head, WL elem) |
1205 | { |
2084 | { |
1206 | while (*head) |
2085 | while (*head) |
1207 | { |
2086 | { |
1208 | if (*head == elem) |
2087 | if (*head == elem) |
… | |
… | |
1213 | |
2092 | |
1214 | head = &(*head)->next; |
2093 | head = &(*head)->next; |
1215 | } |
2094 | } |
1216 | } |
2095 | } |
1217 | |
2096 | |
1218 | inline void |
2097 | void inline_speed |
1219 | ev_clear_pending (EV_P_ W w) |
2098 | clear_pending (EV_P_ W w) |
1220 | { |
2099 | { |
1221 | if (w->pending) |
2100 | if (w->pending) |
1222 | { |
2101 | { |
1223 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
2102 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1224 | w->pending = 0; |
2103 | w->pending = 0; |
1225 | } |
2104 | } |
1226 | } |
2105 | } |
1227 | |
2106 | |
1228 | inline void |
2107 | int |
|
|
2108 | ev_clear_pending (EV_P_ void *w) |
|
|
2109 | { |
|
|
2110 | W w_ = (W)w; |
|
|
2111 | int pending = w_->pending; |
|
|
2112 | |
|
|
2113 | if (expect_true (pending)) |
|
|
2114 | { |
|
|
2115 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2116 | w_->pending = 0; |
|
|
2117 | p->w = 0; |
|
|
2118 | return p->events; |
|
|
2119 | } |
|
|
2120 | else |
|
|
2121 | return 0; |
|
|
2122 | } |
|
|
2123 | |
|
|
2124 | void inline_size |
|
|
2125 | pri_adjust (EV_P_ W w) |
|
|
2126 | { |
|
|
2127 | int pri = w->priority; |
|
|
2128 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2129 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2130 | w->priority = pri; |
|
|
2131 | } |
|
|
2132 | |
|
|
2133 | void inline_speed |
1229 | ev_start (EV_P_ W w, int active) |
2134 | ev_start (EV_P_ W w, int active) |
1230 | { |
2135 | { |
1231 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
2136 | pri_adjust (EV_A_ w); |
1232 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1233 | |
|
|
1234 | w->active = active; |
2137 | w->active = active; |
1235 | ev_ref (EV_A); |
2138 | ev_ref (EV_A); |
1236 | } |
2139 | } |
1237 | |
2140 | |
1238 | inline void |
2141 | void inline_size |
1239 | ev_stop (EV_P_ W w) |
2142 | ev_stop (EV_P_ W w) |
1240 | { |
2143 | { |
1241 | ev_unref (EV_A); |
2144 | ev_unref (EV_A); |
1242 | w->active = 0; |
2145 | w->active = 0; |
1243 | } |
2146 | } |
1244 | |
2147 | |
1245 | /*****************************************************************************/ |
2148 | /*****************************************************************************/ |
1246 | |
2149 | |
1247 | void |
2150 | void noinline |
1248 | ev_io_start (EV_P_ struct ev_io *w) |
2151 | ev_io_start (EV_P_ ev_io *w) |
1249 | { |
2152 | { |
1250 | int fd = w->fd; |
2153 | int fd = w->fd; |
1251 | |
2154 | |
1252 | if (ev_is_active (w)) |
2155 | if (expect_false (ev_is_active (w))) |
1253 | return; |
2156 | return; |
1254 | |
2157 | |
1255 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2158 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
2159 | assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2160 | |
|
|
2161 | EV_FREQUENT_CHECK; |
1256 | |
2162 | |
1257 | ev_start (EV_A_ (W)w, 1); |
2163 | ev_start (EV_A_ (W)w, 1); |
1258 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
2164 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1259 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2165 | wlist_add (&anfds[fd].head, (WL)w); |
1260 | |
2166 | |
1261 | fd_change (EV_A_ fd); |
2167 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
1262 | } |
2168 | w->events &= ~EV_IOFDSET; |
1263 | |
2169 | |
1264 | void |
2170 | EV_FREQUENT_CHECK; |
|
|
2171 | } |
|
|
2172 | |
|
|
2173 | void noinline |
1265 | ev_io_stop (EV_P_ struct ev_io *w) |
2174 | ev_io_stop (EV_P_ ev_io *w) |
1266 | { |
2175 | { |
1267 | ev_clear_pending (EV_A_ (W)w); |
2176 | clear_pending (EV_A_ (W)w); |
1268 | if (!ev_is_active (w)) |
2177 | if (expect_false (!ev_is_active (w))) |
1269 | return; |
2178 | return; |
1270 | |
2179 | |
|
|
2180 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2181 | |
|
|
2182 | EV_FREQUENT_CHECK; |
|
|
2183 | |
1271 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2184 | wlist_del (&anfds[w->fd].head, (WL)w); |
1272 | ev_stop (EV_A_ (W)w); |
2185 | ev_stop (EV_A_ (W)w); |
1273 | |
2186 | |
1274 | fd_change (EV_A_ w->fd); |
2187 | fd_change (EV_A_ w->fd, 1); |
1275 | } |
|
|
1276 | |
2188 | |
1277 | void |
2189 | EV_FREQUENT_CHECK; |
|
|
2190 | } |
|
|
2191 | |
|
|
2192 | void noinline |
1278 | ev_timer_start (EV_P_ struct ev_timer *w) |
2193 | ev_timer_start (EV_P_ ev_timer *w) |
1279 | { |
2194 | { |
1280 | if (ev_is_active (w)) |
2195 | if (expect_false (ev_is_active (w))) |
1281 | return; |
2196 | return; |
1282 | |
2197 | |
1283 | ((WT)w)->at += mn_now; |
2198 | ev_at (w) += mn_now; |
1284 | |
2199 | |
1285 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2200 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1286 | |
2201 | |
|
|
2202 | EV_FREQUENT_CHECK; |
|
|
2203 | |
|
|
2204 | ++timercnt; |
1287 | ev_start (EV_A_ (W)w, ++timercnt); |
2205 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1288 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
2206 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1289 | timers [timercnt - 1] = w; |
2207 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1290 | upheap ((WT *)timers, timercnt - 1); |
2208 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2209 | upheap (timers, ev_active (w)); |
1291 | |
2210 | |
|
|
2211 | EV_FREQUENT_CHECK; |
|
|
2212 | |
1292 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2213 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1293 | } |
2214 | } |
1294 | |
2215 | |
1295 | void |
2216 | void noinline |
1296 | ev_timer_stop (EV_P_ struct ev_timer *w) |
2217 | ev_timer_stop (EV_P_ ev_timer *w) |
1297 | { |
2218 | { |
1298 | ev_clear_pending (EV_A_ (W)w); |
2219 | clear_pending (EV_A_ (W)w); |
1299 | if (!ev_is_active (w)) |
2220 | if (expect_false (!ev_is_active (w))) |
1300 | return; |
2221 | return; |
1301 | |
2222 | |
|
|
2223 | EV_FREQUENT_CHECK; |
|
|
2224 | |
|
|
2225 | { |
|
|
2226 | int active = ev_active (w); |
|
|
2227 | |
1302 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2228 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
1303 | |
2229 | |
1304 | if (((W)w)->active < timercnt--) |
2230 | --timercnt; |
|
|
2231 | |
|
|
2232 | if (expect_true (active < timercnt + HEAP0)) |
1305 | { |
2233 | { |
1306 | timers [((W)w)->active - 1] = timers [timercnt]; |
2234 | timers [active] = timers [timercnt + HEAP0]; |
1307 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2235 | adjustheap (timers, timercnt, active); |
1308 | } |
2236 | } |
|
|
2237 | } |
1309 | |
2238 | |
1310 | ((WT)w)->at = w->repeat; |
2239 | EV_FREQUENT_CHECK; |
|
|
2240 | |
|
|
2241 | ev_at (w) -= mn_now; |
1311 | |
2242 | |
1312 | ev_stop (EV_A_ (W)w); |
2243 | ev_stop (EV_A_ (W)w); |
1313 | } |
2244 | } |
1314 | |
2245 | |
1315 | void |
2246 | void noinline |
1316 | ev_timer_again (EV_P_ struct ev_timer *w) |
2247 | ev_timer_again (EV_P_ ev_timer *w) |
1317 | { |
2248 | { |
|
|
2249 | EV_FREQUENT_CHECK; |
|
|
2250 | |
1318 | if (ev_is_active (w)) |
2251 | if (ev_is_active (w)) |
1319 | { |
2252 | { |
1320 | if (w->repeat) |
2253 | if (w->repeat) |
1321 | { |
2254 | { |
1322 | ((WT)w)->at = mn_now + w->repeat; |
2255 | ev_at (w) = mn_now + w->repeat; |
1323 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2256 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2257 | adjustheap (timers, timercnt, ev_active (w)); |
1324 | } |
2258 | } |
1325 | else |
2259 | else |
1326 | ev_timer_stop (EV_A_ w); |
2260 | ev_timer_stop (EV_A_ w); |
1327 | } |
2261 | } |
1328 | else if (w->repeat) |
2262 | else if (w->repeat) |
|
|
2263 | { |
|
|
2264 | ev_at (w) = w->repeat; |
1329 | ev_timer_start (EV_A_ w); |
2265 | ev_timer_start (EV_A_ w); |
1330 | } |
2266 | } |
1331 | |
2267 | |
1332 | void |
2268 | EV_FREQUENT_CHECK; |
|
|
2269 | } |
|
|
2270 | |
|
|
2271 | #if EV_PERIODIC_ENABLE |
|
|
2272 | void noinline |
1333 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2273 | ev_periodic_start (EV_P_ ev_periodic *w) |
1334 | { |
2274 | { |
1335 | if (ev_is_active (w)) |
2275 | if (expect_false (ev_is_active (w))) |
1336 | return; |
2276 | return; |
1337 | |
2277 | |
1338 | if (w->reschedule_cb) |
2278 | if (w->reschedule_cb) |
1339 | ((WT)w)->at = w->reschedule_cb (w, rt_now); |
2279 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1340 | else if (w->interval) |
2280 | else if (w->interval) |
1341 | { |
2281 | { |
1342 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2282 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1343 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2283 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1344 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2284 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1345 | } |
2285 | } |
|
|
2286 | else |
|
|
2287 | ev_at (w) = w->offset; |
1346 | |
2288 | |
|
|
2289 | EV_FREQUENT_CHECK; |
|
|
2290 | |
|
|
2291 | ++periodiccnt; |
1347 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2292 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1348 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
2293 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1349 | periodics [periodiccnt - 1] = w; |
2294 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1350 | upheap ((WT *)periodics, periodiccnt - 1); |
2295 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2296 | upheap (periodics, ev_active (w)); |
1351 | |
2297 | |
|
|
2298 | EV_FREQUENT_CHECK; |
|
|
2299 | |
1352 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2300 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1353 | } |
2301 | } |
1354 | |
2302 | |
1355 | void |
2303 | void noinline |
1356 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2304 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1357 | { |
2305 | { |
1358 | ev_clear_pending (EV_A_ (W)w); |
2306 | clear_pending (EV_A_ (W)w); |
1359 | if (!ev_is_active (w)) |
2307 | if (expect_false (!ev_is_active (w))) |
1360 | return; |
2308 | return; |
1361 | |
2309 | |
|
|
2310 | EV_FREQUENT_CHECK; |
|
|
2311 | |
|
|
2312 | { |
|
|
2313 | int active = ev_active (w); |
|
|
2314 | |
1362 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2315 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1363 | |
2316 | |
1364 | if (((W)w)->active < periodiccnt--) |
2317 | --periodiccnt; |
|
|
2318 | |
|
|
2319 | if (expect_true (active < periodiccnt + HEAP0)) |
1365 | { |
2320 | { |
1366 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2321 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1367 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2322 | adjustheap (periodics, periodiccnt, active); |
1368 | } |
2323 | } |
|
|
2324 | } |
|
|
2325 | |
|
|
2326 | EV_FREQUENT_CHECK; |
1369 | |
2327 | |
1370 | ev_stop (EV_A_ (W)w); |
2328 | ev_stop (EV_A_ (W)w); |
1371 | } |
2329 | } |
1372 | |
2330 | |
1373 | void |
2331 | void noinline |
1374 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
2332 | ev_periodic_again (EV_P_ ev_periodic *w) |
1375 | { |
2333 | { |
|
|
2334 | /* TODO: use adjustheap and recalculation */ |
1376 | ev_periodic_stop (EV_A_ w); |
2335 | ev_periodic_stop (EV_A_ w); |
1377 | ev_periodic_start (EV_A_ w); |
2336 | ev_periodic_start (EV_A_ w); |
1378 | } |
2337 | } |
1379 | |
2338 | #endif |
1380 | void |
|
|
1381 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1382 | { |
|
|
1383 | if (ev_is_active (w)) |
|
|
1384 | return; |
|
|
1385 | |
|
|
1386 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1387 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1388 | idles [idlecnt - 1] = w; |
|
|
1389 | } |
|
|
1390 | |
|
|
1391 | void |
|
|
1392 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1393 | { |
|
|
1394 | ev_clear_pending (EV_A_ (W)w); |
|
|
1395 | if (ev_is_active (w)) |
|
|
1396 | return; |
|
|
1397 | |
|
|
1398 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1399 | ev_stop (EV_A_ (W)w); |
|
|
1400 | } |
|
|
1401 | |
|
|
1402 | void |
|
|
1403 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1404 | { |
|
|
1405 | if (ev_is_active (w)) |
|
|
1406 | return; |
|
|
1407 | |
|
|
1408 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1409 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1410 | prepares [preparecnt - 1] = w; |
|
|
1411 | } |
|
|
1412 | |
|
|
1413 | void |
|
|
1414 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1415 | { |
|
|
1416 | ev_clear_pending (EV_A_ (W)w); |
|
|
1417 | if (ev_is_active (w)) |
|
|
1418 | return; |
|
|
1419 | |
|
|
1420 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1421 | ev_stop (EV_A_ (W)w); |
|
|
1422 | } |
|
|
1423 | |
|
|
1424 | void |
|
|
1425 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1426 | { |
|
|
1427 | if (ev_is_active (w)) |
|
|
1428 | return; |
|
|
1429 | |
|
|
1430 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1431 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1432 | checks [checkcnt - 1] = w; |
|
|
1433 | } |
|
|
1434 | |
|
|
1435 | void |
|
|
1436 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1437 | { |
|
|
1438 | ev_clear_pending (EV_A_ (W)w); |
|
|
1439 | if (ev_is_active (w)) |
|
|
1440 | return; |
|
|
1441 | |
|
|
1442 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1443 | ev_stop (EV_A_ (W)w); |
|
|
1444 | } |
|
|
1445 | |
2339 | |
1446 | #ifndef SA_RESTART |
2340 | #ifndef SA_RESTART |
1447 | # define SA_RESTART 0 |
2341 | # define SA_RESTART 0 |
1448 | #endif |
2342 | #endif |
1449 | |
2343 | |
1450 | void |
2344 | void noinline |
1451 | ev_signal_start (EV_P_ struct ev_signal *w) |
2345 | ev_signal_start (EV_P_ ev_signal *w) |
1452 | { |
2346 | { |
1453 | #if EV_MULTIPLICITY |
2347 | #if EV_MULTIPLICITY |
1454 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
2348 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1455 | #endif |
2349 | #endif |
1456 | if (ev_is_active (w)) |
2350 | if (expect_false (ev_is_active (w))) |
1457 | return; |
2351 | return; |
1458 | |
2352 | |
1459 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2353 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1460 | |
2354 | |
|
|
2355 | evpipe_init (EV_A); |
|
|
2356 | |
|
|
2357 | EV_FREQUENT_CHECK; |
|
|
2358 | |
|
|
2359 | { |
|
|
2360 | #ifndef _WIN32 |
|
|
2361 | sigset_t full, prev; |
|
|
2362 | sigfillset (&full); |
|
|
2363 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2364 | #endif |
|
|
2365 | |
|
|
2366 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
|
|
2367 | |
|
|
2368 | #ifndef _WIN32 |
|
|
2369 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2370 | #endif |
|
|
2371 | } |
|
|
2372 | |
1461 | ev_start (EV_A_ (W)w, 1); |
2373 | ev_start (EV_A_ (W)w, 1); |
1462 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1463 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2374 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1464 | |
2375 | |
1465 | if (!((WL)w)->next) |
2376 | if (!((WL)w)->next) |
1466 | { |
2377 | { |
1467 | #if WIN32 |
2378 | #if _WIN32 |
1468 | signal (w->signum, sighandler); |
2379 | signal (w->signum, ev_sighandler); |
1469 | #else |
2380 | #else |
1470 | struct sigaction sa; |
2381 | struct sigaction sa; |
1471 | sa.sa_handler = sighandler; |
2382 | sa.sa_handler = ev_sighandler; |
1472 | sigfillset (&sa.sa_mask); |
2383 | sigfillset (&sa.sa_mask); |
1473 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2384 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1474 | sigaction (w->signum, &sa, 0); |
2385 | sigaction (w->signum, &sa, 0); |
1475 | #endif |
2386 | #endif |
1476 | } |
2387 | } |
1477 | } |
|
|
1478 | |
2388 | |
1479 | void |
2389 | EV_FREQUENT_CHECK; |
|
|
2390 | } |
|
|
2391 | |
|
|
2392 | void noinline |
1480 | ev_signal_stop (EV_P_ struct ev_signal *w) |
2393 | ev_signal_stop (EV_P_ ev_signal *w) |
1481 | { |
2394 | { |
1482 | ev_clear_pending (EV_A_ (W)w); |
2395 | clear_pending (EV_A_ (W)w); |
1483 | if (!ev_is_active (w)) |
2396 | if (expect_false (!ev_is_active (w))) |
1484 | return; |
2397 | return; |
1485 | |
2398 | |
|
|
2399 | EV_FREQUENT_CHECK; |
|
|
2400 | |
1486 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2401 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1487 | ev_stop (EV_A_ (W)w); |
2402 | ev_stop (EV_A_ (W)w); |
1488 | |
2403 | |
1489 | if (!signals [w->signum - 1].head) |
2404 | if (!signals [w->signum - 1].head) |
1490 | signal (w->signum, SIG_DFL); |
2405 | signal (w->signum, SIG_DFL); |
1491 | } |
|
|
1492 | |
2406 | |
|
|
2407 | EV_FREQUENT_CHECK; |
|
|
2408 | } |
|
|
2409 | |
1493 | void |
2410 | void |
1494 | ev_child_start (EV_P_ struct ev_child *w) |
2411 | ev_child_start (EV_P_ ev_child *w) |
1495 | { |
2412 | { |
1496 | #if EV_MULTIPLICITY |
2413 | #if EV_MULTIPLICITY |
1497 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
2414 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1498 | #endif |
2415 | #endif |
1499 | if (ev_is_active (w)) |
2416 | if (expect_false (ev_is_active (w))) |
1500 | return; |
2417 | return; |
1501 | |
2418 | |
|
|
2419 | EV_FREQUENT_CHECK; |
|
|
2420 | |
1502 | ev_start (EV_A_ (W)w, 1); |
2421 | ev_start (EV_A_ (W)w, 1); |
1503 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2422 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1504 | } |
|
|
1505 | |
2423 | |
|
|
2424 | EV_FREQUENT_CHECK; |
|
|
2425 | } |
|
|
2426 | |
1506 | void |
2427 | void |
1507 | ev_child_stop (EV_P_ struct ev_child *w) |
2428 | ev_child_stop (EV_P_ ev_child *w) |
1508 | { |
2429 | { |
1509 | ev_clear_pending (EV_A_ (W)w); |
2430 | clear_pending (EV_A_ (W)w); |
1510 | if (ev_is_active (w)) |
2431 | if (expect_false (!ev_is_active (w))) |
1511 | return; |
2432 | return; |
1512 | |
2433 | |
|
|
2434 | EV_FREQUENT_CHECK; |
|
|
2435 | |
1513 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2436 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1514 | ev_stop (EV_A_ (W)w); |
2437 | ev_stop (EV_A_ (W)w); |
|
|
2438 | |
|
|
2439 | EV_FREQUENT_CHECK; |
1515 | } |
2440 | } |
|
|
2441 | |
|
|
2442 | #if EV_STAT_ENABLE |
|
|
2443 | |
|
|
2444 | # ifdef _WIN32 |
|
|
2445 | # undef lstat |
|
|
2446 | # define lstat(a,b) _stati64 (a,b) |
|
|
2447 | # endif |
|
|
2448 | |
|
|
2449 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2450 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2451 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2452 | |
|
|
2453 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2454 | |
|
|
2455 | #if EV_USE_INOTIFY |
|
|
2456 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2457 | |
|
|
2458 | static void noinline |
|
|
2459 | infy_add (EV_P_ ev_stat *w) |
|
|
2460 | { |
|
|
2461 | 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); |
|
|
2462 | |
|
|
2463 | if (w->wd < 0) |
|
|
2464 | { |
|
|
2465 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2466 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2467 | |
|
|
2468 | /* monitor some parent directory for speedup hints */ |
|
|
2469 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2470 | /* but an efficiency issue only */ |
|
|
2471 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2472 | { |
|
|
2473 | char path [4096]; |
|
|
2474 | strcpy (path, w->path); |
|
|
2475 | |
|
|
2476 | do |
|
|
2477 | { |
|
|
2478 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2479 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2480 | |
|
|
2481 | char *pend = strrchr (path, '/'); |
|
|
2482 | |
|
|
2483 | if (!pend) |
|
|
2484 | break; /* whoops, no '/', complain to your admin */ |
|
|
2485 | |
|
|
2486 | *pend = 0; |
|
|
2487 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2488 | } |
|
|
2489 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2490 | } |
|
|
2491 | } |
|
|
2492 | else |
|
|
2493 | { |
|
|
2494 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2495 | |
|
|
2496 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2497 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2498 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2499 | struct statfs sfs; |
|
|
2500 | |
|
|
2501 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2502 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2503 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2504 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2505 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2506 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2507 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2508 | return; |
|
|
2509 | |
|
|
2510 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2511 | ev_timer_again (EV_A_ &w->timer); |
|
|
2512 | } |
|
|
2513 | } |
|
|
2514 | |
|
|
2515 | static void noinline |
|
|
2516 | infy_del (EV_P_ ev_stat *w) |
|
|
2517 | { |
|
|
2518 | int slot; |
|
|
2519 | int wd = w->wd; |
|
|
2520 | |
|
|
2521 | if (wd < 0) |
|
|
2522 | return; |
|
|
2523 | |
|
|
2524 | w->wd = -2; |
|
|
2525 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2526 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2527 | |
|
|
2528 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2529 | inotify_rm_watch (fs_fd, wd); |
|
|
2530 | } |
|
|
2531 | |
|
|
2532 | static void noinline |
|
|
2533 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2534 | { |
|
|
2535 | if (slot < 0) |
|
|
2536 | /* overflow, need to check for all hash slots */ |
|
|
2537 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2538 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2539 | else |
|
|
2540 | { |
|
|
2541 | WL w_; |
|
|
2542 | |
|
|
2543 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2544 | { |
|
|
2545 | ev_stat *w = (ev_stat *)w_; |
|
|
2546 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2547 | |
|
|
2548 | if (w->wd == wd || wd == -1) |
|
|
2549 | { |
|
|
2550 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2551 | { |
|
|
2552 | w->wd = -1; |
|
|
2553 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2554 | } |
|
|
2555 | |
|
|
2556 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2557 | } |
|
|
2558 | } |
|
|
2559 | } |
|
|
2560 | } |
|
|
2561 | |
|
|
2562 | static void |
|
|
2563 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2564 | { |
|
|
2565 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2566 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2567 | int ofs; |
|
|
2568 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2569 | |
|
|
2570 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2571 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2572 | } |
|
|
2573 | |
|
|
2574 | void inline_size |
|
|
2575 | check_2625 (EV_P) |
|
|
2576 | { |
|
|
2577 | /* kernels < 2.6.25 are borked |
|
|
2578 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2579 | */ |
|
|
2580 | struct utsname buf; |
|
|
2581 | int major, minor, micro; |
|
|
2582 | |
|
|
2583 | if (uname (&buf)) |
|
|
2584 | return; |
|
|
2585 | |
|
|
2586 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2587 | return; |
|
|
2588 | |
|
|
2589 | if (major < 2 |
|
|
2590 | || (major == 2 && minor < 6) |
|
|
2591 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2592 | return; |
|
|
2593 | |
|
|
2594 | fs_2625 = 1; |
|
|
2595 | } |
|
|
2596 | |
|
|
2597 | void inline_size |
|
|
2598 | infy_init (EV_P) |
|
|
2599 | { |
|
|
2600 | if (fs_fd != -2) |
|
|
2601 | return; |
|
|
2602 | |
|
|
2603 | fs_fd = -1; |
|
|
2604 | |
|
|
2605 | check_2625 (EV_A); |
|
|
2606 | |
|
|
2607 | fs_fd = inotify_init (); |
|
|
2608 | |
|
|
2609 | if (fs_fd >= 0) |
|
|
2610 | { |
|
|
2611 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2612 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2613 | ev_io_start (EV_A_ &fs_w); |
|
|
2614 | } |
|
|
2615 | } |
|
|
2616 | |
|
|
2617 | void inline_size |
|
|
2618 | infy_fork (EV_P) |
|
|
2619 | { |
|
|
2620 | int slot; |
|
|
2621 | |
|
|
2622 | if (fs_fd < 0) |
|
|
2623 | return; |
|
|
2624 | |
|
|
2625 | close (fs_fd); |
|
|
2626 | fs_fd = inotify_init (); |
|
|
2627 | |
|
|
2628 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2629 | { |
|
|
2630 | WL w_ = fs_hash [slot].head; |
|
|
2631 | fs_hash [slot].head = 0; |
|
|
2632 | |
|
|
2633 | while (w_) |
|
|
2634 | { |
|
|
2635 | ev_stat *w = (ev_stat *)w_; |
|
|
2636 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2637 | |
|
|
2638 | w->wd = -1; |
|
|
2639 | |
|
|
2640 | if (fs_fd >= 0) |
|
|
2641 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2642 | else |
|
|
2643 | ev_timer_again (EV_A_ &w->timer); |
|
|
2644 | } |
|
|
2645 | } |
|
|
2646 | } |
|
|
2647 | |
|
|
2648 | #endif |
|
|
2649 | |
|
|
2650 | #ifdef _WIN32 |
|
|
2651 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
2652 | #else |
|
|
2653 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
2654 | #endif |
|
|
2655 | |
|
|
2656 | void |
|
|
2657 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2658 | { |
|
|
2659 | if (lstat (w->path, &w->attr) < 0) |
|
|
2660 | w->attr.st_nlink = 0; |
|
|
2661 | else if (!w->attr.st_nlink) |
|
|
2662 | w->attr.st_nlink = 1; |
|
|
2663 | } |
|
|
2664 | |
|
|
2665 | static void noinline |
|
|
2666 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2667 | { |
|
|
2668 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2669 | |
|
|
2670 | /* we copy this here each the time so that */ |
|
|
2671 | /* prev has the old value when the callback gets invoked */ |
|
|
2672 | w->prev = w->attr; |
|
|
2673 | ev_stat_stat (EV_A_ w); |
|
|
2674 | |
|
|
2675 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2676 | if ( |
|
|
2677 | w->prev.st_dev != w->attr.st_dev |
|
|
2678 | || w->prev.st_ino != w->attr.st_ino |
|
|
2679 | || w->prev.st_mode != w->attr.st_mode |
|
|
2680 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2681 | || w->prev.st_uid != w->attr.st_uid |
|
|
2682 | || w->prev.st_gid != w->attr.st_gid |
|
|
2683 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2684 | || w->prev.st_size != w->attr.st_size |
|
|
2685 | || w->prev.st_atime != w->attr.st_atime |
|
|
2686 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2687 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2688 | ) { |
|
|
2689 | #if EV_USE_INOTIFY |
|
|
2690 | if (fs_fd >= 0) |
|
|
2691 | { |
|
|
2692 | infy_del (EV_A_ w); |
|
|
2693 | infy_add (EV_A_ w); |
|
|
2694 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2695 | } |
|
|
2696 | #endif |
|
|
2697 | |
|
|
2698 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2699 | } |
|
|
2700 | } |
|
|
2701 | |
|
|
2702 | void |
|
|
2703 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2704 | { |
|
|
2705 | if (expect_false (ev_is_active (w))) |
|
|
2706 | return; |
|
|
2707 | |
|
|
2708 | ev_stat_stat (EV_A_ w); |
|
|
2709 | |
|
|
2710 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
2711 | w->interval = MIN_STAT_INTERVAL; |
|
|
2712 | |
|
|
2713 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
2714 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2715 | |
|
|
2716 | #if EV_USE_INOTIFY |
|
|
2717 | infy_init (EV_A); |
|
|
2718 | |
|
|
2719 | if (fs_fd >= 0) |
|
|
2720 | infy_add (EV_A_ w); |
|
|
2721 | else |
|
|
2722 | #endif |
|
|
2723 | ev_timer_again (EV_A_ &w->timer); |
|
|
2724 | |
|
|
2725 | ev_start (EV_A_ (W)w, 1); |
|
|
2726 | |
|
|
2727 | EV_FREQUENT_CHECK; |
|
|
2728 | } |
|
|
2729 | |
|
|
2730 | void |
|
|
2731 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2732 | { |
|
|
2733 | clear_pending (EV_A_ (W)w); |
|
|
2734 | if (expect_false (!ev_is_active (w))) |
|
|
2735 | return; |
|
|
2736 | |
|
|
2737 | EV_FREQUENT_CHECK; |
|
|
2738 | |
|
|
2739 | #if EV_USE_INOTIFY |
|
|
2740 | infy_del (EV_A_ w); |
|
|
2741 | #endif |
|
|
2742 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2743 | |
|
|
2744 | ev_stop (EV_A_ (W)w); |
|
|
2745 | |
|
|
2746 | EV_FREQUENT_CHECK; |
|
|
2747 | } |
|
|
2748 | #endif |
|
|
2749 | |
|
|
2750 | #if EV_IDLE_ENABLE |
|
|
2751 | void |
|
|
2752 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2753 | { |
|
|
2754 | if (expect_false (ev_is_active (w))) |
|
|
2755 | return; |
|
|
2756 | |
|
|
2757 | pri_adjust (EV_A_ (W)w); |
|
|
2758 | |
|
|
2759 | EV_FREQUENT_CHECK; |
|
|
2760 | |
|
|
2761 | { |
|
|
2762 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2763 | |
|
|
2764 | ++idleall; |
|
|
2765 | ev_start (EV_A_ (W)w, active); |
|
|
2766 | |
|
|
2767 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2768 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2769 | } |
|
|
2770 | |
|
|
2771 | EV_FREQUENT_CHECK; |
|
|
2772 | } |
|
|
2773 | |
|
|
2774 | void |
|
|
2775 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2776 | { |
|
|
2777 | clear_pending (EV_A_ (W)w); |
|
|
2778 | if (expect_false (!ev_is_active (w))) |
|
|
2779 | return; |
|
|
2780 | |
|
|
2781 | EV_FREQUENT_CHECK; |
|
|
2782 | |
|
|
2783 | { |
|
|
2784 | int active = ev_active (w); |
|
|
2785 | |
|
|
2786 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2787 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2788 | |
|
|
2789 | ev_stop (EV_A_ (W)w); |
|
|
2790 | --idleall; |
|
|
2791 | } |
|
|
2792 | |
|
|
2793 | EV_FREQUENT_CHECK; |
|
|
2794 | } |
|
|
2795 | #endif |
|
|
2796 | |
|
|
2797 | void |
|
|
2798 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2799 | { |
|
|
2800 | if (expect_false (ev_is_active (w))) |
|
|
2801 | return; |
|
|
2802 | |
|
|
2803 | EV_FREQUENT_CHECK; |
|
|
2804 | |
|
|
2805 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
2806 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
2807 | prepares [preparecnt - 1] = w; |
|
|
2808 | |
|
|
2809 | EV_FREQUENT_CHECK; |
|
|
2810 | } |
|
|
2811 | |
|
|
2812 | void |
|
|
2813 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
2814 | { |
|
|
2815 | clear_pending (EV_A_ (W)w); |
|
|
2816 | if (expect_false (!ev_is_active (w))) |
|
|
2817 | return; |
|
|
2818 | |
|
|
2819 | EV_FREQUENT_CHECK; |
|
|
2820 | |
|
|
2821 | { |
|
|
2822 | int active = ev_active (w); |
|
|
2823 | |
|
|
2824 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2825 | ev_active (prepares [active - 1]) = active; |
|
|
2826 | } |
|
|
2827 | |
|
|
2828 | ev_stop (EV_A_ (W)w); |
|
|
2829 | |
|
|
2830 | EV_FREQUENT_CHECK; |
|
|
2831 | } |
|
|
2832 | |
|
|
2833 | void |
|
|
2834 | ev_check_start (EV_P_ ev_check *w) |
|
|
2835 | { |
|
|
2836 | if (expect_false (ev_is_active (w))) |
|
|
2837 | return; |
|
|
2838 | |
|
|
2839 | EV_FREQUENT_CHECK; |
|
|
2840 | |
|
|
2841 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
2842 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
2843 | checks [checkcnt - 1] = w; |
|
|
2844 | |
|
|
2845 | EV_FREQUENT_CHECK; |
|
|
2846 | } |
|
|
2847 | |
|
|
2848 | void |
|
|
2849 | ev_check_stop (EV_P_ ev_check *w) |
|
|
2850 | { |
|
|
2851 | clear_pending (EV_A_ (W)w); |
|
|
2852 | if (expect_false (!ev_is_active (w))) |
|
|
2853 | return; |
|
|
2854 | |
|
|
2855 | EV_FREQUENT_CHECK; |
|
|
2856 | |
|
|
2857 | { |
|
|
2858 | int active = ev_active (w); |
|
|
2859 | |
|
|
2860 | checks [active - 1] = checks [--checkcnt]; |
|
|
2861 | ev_active (checks [active - 1]) = active; |
|
|
2862 | } |
|
|
2863 | |
|
|
2864 | ev_stop (EV_A_ (W)w); |
|
|
2865 | |
|
|
2866 | EV_FREQUENT_CHECK; |
|
|
2867 | } |
|
|
2868 | |
|
|
2869 | #if EV_EMBED_ENABLE |
|
|
2870 | void noinline |
|
|
2871 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2872 | { |
|
|
2873 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2874 | } |
|
|
2875 | |
|
|
2876 | static void |
|
|
2877 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2878 | { |
|
|
2879 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2880 | |
|
|
2881 | if (ev_cb (w)) |
|
|
2882 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2883 | else |
|
|
2884 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2885 | } |
|
|
2886 | |
|
|
2887 | static void |
|
|
2888 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2889 | { |
|
|
2890 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2891 | |
|
|
2892 | { |
|
|
2893 | struct ev_loop *loop = w->other; |
|
|
2894 | |
|
|
2895 | while (fdchangecnt) |
|
|
2896 | { |
|
|
2897 | fd_reify (EV_A); |
|
|
2898 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2899 | } |
|
|
2900 | } |
|
|
2901 | } |
|
|
2902 | |
|
|
2903 | static void |
|
|
2904 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
2905 | { |
|
|
2906 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
2907 | |
|
|
2908 | { |
|
|
2909 | struct ev_loop *loop = w->other; |
|
|
2910 | |
|
|
2911 | ev_loop_fork (EV_A); |
|
|
2912 | } |
|
|
2913 | } |
|
|
2914 | |
|
|
2915 | #if 0 |
|
|
2916 | static void |
|
|
2917 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2918 | { |
|
|
2919 | ev_idle_stop (EV_A_ idle); |
|
|
2920 | } |
|
|
2921 | #endif |
|
|
2922 | |
|
|
2923 | void |
|
|
2924 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2925 | { |
|
|
2926 | if (expect_false (ev_is_active (w))) |
|
|
2927 | return; |
|
|
2928 | |
|
|
2929 | { |
|
|
2930 | struct ev_loop *loop = w->other; |
|
|
2931 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2932 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2933 | } |
|
|
2934 | |
|
|
2935 | EV_FREQUENT_CHECK; |
|
|
2936 | |
|
|
2937 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2938 | ev_io_start (EV_A_ &w->io); |
|
|
2939 | |
|
|
2940 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2941 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2942 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2943 | |
|
|
2944 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
2945 | ev_fork_start (EV_A_ &w->fork); |
|
|
2946 | |
|
|
2947 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2948 | |
|
|
2949 | ev_start (EV_A_ (W)w, 1); |
|
|
2950 | |
|
|
2951 | EV_FREQUENT_CHECK; |
|
|
2952 | } |
|
|
2953 | |
|
|
2954 | void |
|
|
2955 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
2956 | { |
|
|
2957 | clear_pending (EV_A_ (W)w); |
|
|
2958 | if (expect_false (!ev_is_active (w))) |
|
|
2959 | return; |
|
|
2960 | |
|
|
2961 | EV_FREQUENT_CHECK; |
|
|
2962 | |
|
|
2963 | ev_io_stop (EV_A_ &w->io); |
|
|
2964 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2965 | ev_fork_stop (EV_A_ &w->fork); |
|
|
2966 | |
|
|
2967 | EV_FREQUENT_CHECK; |
|
|
2968 | } |
|
|
2969 | #endif |
|
|
2970 | |
|
|
2971 | #if EV_FORK_ENABLE |
|
|
2972 | void |
|
|
2973 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2974 | { |
|
|
2975 | if (expect_false (ev_is_active (w))) |
|
|
2976 | return; |
|
|
2977 | |
|
|
2978 | EV_FREQUENT_CHECK; |
|
|
2979 | |
|
|
2980 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2981 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2982 | forks [forkcnt - 1] = w; |
|
|
2983 | |
|
|
2984 | EV_FREQUENT_CHECK; |
|
|
2985 | } |
|
|
2986 | |
|
|
2987 | void |
|
|
2988 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2989 | { |
|
|
2990 | clear_pending (EV_A_ (W)w); |
|
|
2991 | if (expect_false (!ev_is_active (w))) |
|
|
2992 | return; |
|
|
2993 | |
|
|
2994 | EV_FREQUENT_CHECK; |
|
|
2995 | |
|
|
2996 | { |
|
|
2997 | int active = ev_active (w); |
|
|
2998 | |
|
|
2999 | forks [active - 1] = forks [--forkcnt]; |
|
|
3000 | ev_active (forks [active - 1]) = active; |
|
|
3001 | } |
|
|
3002 | |
|
|
3003 | ev_stop (EV_A_ (W)w); |
|
|
3004 | |
|
|
3005 | EV_FREQUENT_CHECK; |
|
|
3006 | } |
|
|
3007 | #endif |
|
|
3008 | |
|
|
3009 | #if EV_ASYNC_ENABLE |
|
|
3010 | void |
|
|
3011 | ev_async_start (EV_P_ ev_async *w) |
|
|
3012 | { |
|
|
3013 | if (expect_false (ev_is_active (w))) |
|
|
3014 | return; |
|
|
3015 | |
|
|
3016 | evpipe_init (EV_A); |
|
|
3017 | |
|
|
3018 | EV_FREQUENT_CHECK; |
|
|
3019 | |
|
|
3020 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3021 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3022 | asyncs [asynccnt - 1] = w; |
|
|
3023 | |
|
|
3024 | EV_FREQUENT_CHECK; |
|
|
3025 | } |
|
|
3026 | |
|
|
3027 | void |
|
|
3028 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3029 | { |
|
|
3030 | clear_pending (EV_A_ (W)w); |
|
|
3031 | if (expect_false (!ev_is_active (w))) |
|
|
3032 | return; |
|
|
3033 | |
|
|
3034 | EV_FREQUENT_CHECK; |
|
|
3035 | |
|
|
3036 | { |
|
|
3037 | int active = ev_active (w); |
|
|
3038 | |
|
|
3039 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3040 | ev_active (asyncs [active - 1]) = active; |
|
|
3041 | } |
|
|
3042 | |
|
|
3043 | ev_stop (EV_A_ (W)w); |
|
|
3044 | |
|
|
3045 | EV_FREQUENT_CHECK; |
|
|
3046 | } |
|
|
3047 | |
|
|
3048 | void |
|
|
3049 | ev_async_send (EV_P_ ev_async *w) |
|
|
3050 | { |
|
|
3051 | w->sent = 1; |
|
|
3052 | evpipe_write (EV_A_ &gotasync); |
|
|
3053 | } |
|
|
3054 | #endif |
1516 | |
3055 | |
1517 | /*****************************************************************************/ |
3056 | /*****************************************************************************/ |
1518 | |
3057 | |
1519 | struct ev_once |
3058 | struct ev_once |
1520 | { |
3059 | { |
1521 | struct ev_io io; |
3060 | ev_io io; |
1522 | struct ev_timer to; |
3061 | ev_timer to; |
1523 | void (*cb)(int revents, void *arg); |
3062 | void (*cb)(int revents, void *arg); |
1524 | void *arg; |
3063 | void *arg; |
1525 | }; |
3064 | }; |
1526 | |
3065 | |
1527 | static void |
3066 | static void |
1528 | once_cb (EV_P_ struct ev_once *once, int revents) |
3067 | once_cb (EV_P_ struct ev_once *once, int revents) |
1529 | { |
3068 | { |
1530 | void (*cb)(int revents, void *arg) = once->cb; |
3069 | void (*cb)(int revents, void *arg) = once->cb; |
1531 | void *arg = once->arg; |
3070 | void *arg = once->arg; |
1532 | |
3071 | |
1533 | ev_io_stop (EV_A_ &once->io); |
3072 | ev_io_stop (EV_A_ &once->io); |
1534 | ev_timer_stop (EV_A_ &once->to); |
3073 | ev_timer_stop (EV_A_ &once->to); |
1535 | ev_free (once); |
3074 | ev_free (once); |
1536 | |
3075 | |
1537 | cb (revents, arg); |
3076 | cb (revents, arg); |
1538 | } |
3077 | } |
1539 | |
3078 | |
1540 | static void |
3079 | static void |
1541 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
3080 | once_cb_io (EV_P_ ev_io *w, int revents) |
1542 | { |
3081 | { |
1543 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3082 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3083 | |
|
|
3084 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1544 | } |
3085 | } |
1545 | |
3086 | |
1546 | static void |
3087 | static void |
1547 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
3088 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1548 | { |
3089 | { |
1549 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3090 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
3091 | |
|
|
3092 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1550 | } |
3093 | } |
1551 | |
3094 | |
1552 | void |
3095 | void |
1553 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3096 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1554 | { |
3097 | { |
1555 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3098 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1556 | |
3099 | |
1557 | if (!once) |
3100 | if (expect_false (!once)) |
|
|
3101 | { |
1558 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3102 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1559 | else |
3103 | return; |
1560 | { |
3104 | } |
|
|
3105 | |
1561 | once->cb = cb; |
3106 | once->cb = cb; |
1562 | once->arg = arg; |
3107 | once->arg = arg; |
1563 | |
3108 | |
1564 | ev_watcher_init (&once->io, once_cb_io); |
3109 | ev_init (&once->io, once_cb_io); |
1565 | if (fd >= 0) |
3110 | if (fd >= 0) |
1566 | { |
3111 | { |
1567 | ev_io_set (&once->io, fd, events); |
3112 | ev_io_set (&once->io, fd, events); |
1568 | ev_io_start (EV_A_ &once->io); |
3113 | ev_io_start (EV_A_ &once->io); |
1569 | } |
3114 | } |
1570 | |
3115 | |
1571 | ev_watcher_init (&once->to, once_cb_to); |
3116 | ev_init (&once->to, once_cb_to); |
1572 | if (timeout >= 0.) |
3117 | if (timeout >= 0.) |
1573 | { |
3118 | { |
1574 | ev_timer_set (&once->to, timeout, 0.); |
3119 | ev_timer_set (&once->to, timeout, 0.); |
1575 | ev_timer_start (EV_A_ &once->to); |
3120 | ev_timer_start (EV_A_ &once->to); |
1576 | } |
|
|
1577 | } |
3121 | } |
1578 | } |
3122 | } |
1579 | |
3123 | |
|
|
3124 | #if EV_MULTIPLICITY |
|
|
3125 | #include "ev_wrap.h" |
|
|
3126 | #endif |
|
|
3127 | |
|
|
3128 | #ifdef __cplusplus |
|
|
3129 | } |
|
|
3130 | #endif |
|
|
3131 | |