1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | #ifdef __cplusplus |
33 | extern "C" { |
41 | extern "C" { |
34 | #endif |
42 | #endif |
35 | |
43 | |
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44 | /* this big block deduces configuration from config.h */ |
36 | #ifndef EV_STANDALONE |
45 | #ifndef EV_STANDALONE |
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46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
37 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
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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 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
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63 | # define EV_USE_CLOCK_SYSCALL 0 |
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64 | # endif |
38 | |
65 | |
39 | # if HAVE_CLOCK_GETTIME |
66 | # if HAVE_CLOCK_GETTIME |
40 | # ifndef EV_USE_MONOTONIC |
67 | # ifndef EV_USE_MONOTONIC |
41 | # define EV_USE_MONOTONIC 1 |
68 | # define EV_USE_MONOTONIC 1 |
42 | # endif |
69 | # endif |
43 | # ifndef EV_USE_REALTIME |
70 | # ifndef EV_USE_REALTIME |
44 | # define EV_USE_REALTIME 1 |
71 | # define EV_USE_REALTIME 0 |
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72 | # endif |
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73 | # else |
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74 | # ifndef EV_USE_MONOTONIC |
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75 | # define EV_USE_MONOTONIC 0 |
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76 | # endif |
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77 | # ifndef EV_USE_REALTIME |
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78 | # define EV_USE_REALTIME 0 |
45 | # endif |
79 | # endif |
46 | # endif |
80 | # endif |
47 | |
81 | |
48 | # if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) |
82 | # ifndef EV_USE_NANOSLEEP |
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83 | # if HAVE_NANOSLEEP |
49 | # define EV_USE_SELECT 1 |
84 | # define EV_USE_NANOSLEEP 1 |
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85 | # else |
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86 | # define EV_USE_NANOSLEEP 0 |
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87 | # endif |
50 | # endif |
88 | # endif |
51 | |
89 | |
52 | # if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) |
90 | # ifndef EV_USE_SELECT |
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91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
53 | # define EV_USE_POLL 1 |
92 | # define EV_USE_SELECT 1 |
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93 | # else |
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94 | # define EV_USE_SELECT 0 |
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95 | # endif |
54 | # endif |
96 | # endif |
55 | |
97 | |
56 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) |
98 | # ifndef EV_USE_POLL |
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99 | # if HAVE_POLL && HAVE_POLL_H |
57 | # define EV_USE_EPOLL 1 |
100 | # define EV_USE_POLL 1 |
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101 | # else |
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102 | # define EV_USE_POLL 0 |
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103 | # endif |
58 | # endif |
104 | # endif |
59 | |
105 | |
60 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) |
106 | # ifndef EV_USE_EPOLL |
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107 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
61 | # define EV_USE_KQUEUE 1 |
108 | # define EV_USE_EPOLL 1 |
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109 | # else |
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110 | # define EV_USE_EPOLL 0 |
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111 | # endif |
62 | # endif |
112 | # endif |
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113 | |
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114 | # ifndef EV_USE_KQUEUE |
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115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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116 | # define EV_USE_KQUEUE 1 |
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117 | # else |
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118 | # define EV_USE_KQUEUE 0 |
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119 | # endif |
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120 | # endif |
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121 | |
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122 | # ifndef EV_USE_PORT |
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123 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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124 | # define EV_USE_PORT 1 |
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125 | # else |
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126 | # define EV_USE_PORT 0 |
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127 | # endif |
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128 | # endif |
63 | |
129 | |
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130 | # ifndef EV_USE_INOTIFY |
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131 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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132 | # define EV_USE_INOTIFY 1 |
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133 | # else |
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134 | # define EV_USE_INOTIFY 0 |
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135 | # endif |
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136 | # endif |
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137 | |
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138 | # ifndef EV_USE_SIGNALFD |
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139 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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140 | # define EV_USE_SIGNALFD 1 |
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141 | # else |
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142 | # define EV_USE_SIGNALFD 0 |
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143 | # endif |
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144 | # endif |
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145 | |
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146 | # ifndef EV_USE_EVENTFD |
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147 | # if HAVE_EVENTFD |
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148 | # define EV_USE_EVENTFD 1 |
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149 | # else |
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150 | # define EV_USE_EVENTFD 0 |
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151 | # endif |
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152 | # endif |
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153 | |
64 | #endif |
154 | #endif |
65 | |
155 | |
66 | #include <math.h> |
156 | #include <math.h> |
67 | #include <stdlib.h> |
157 | #include <stdlib.h> |
68 | #include <fcntl.h> |
158 | #include <fcntl.h> |
… | |
… | |
75 | #include <sys/types.h> |
165 | #include <sys/types.h> |
76 | #include <time.h> |
166 | #include <time.h> |
77 | |
167 | |
78 | #include <signal.h> |
168 | #include <signal.h> |
79 | |
169 | |
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170 | #ifdef EV_H |
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171 | # include EV_H |
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172 | #else |
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173 | # include "ev.h" |
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174 | #endif |
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175 | |
80 | #ifndef _WIN32 |
176 | #ifndef _WIN32 |
81 | # include <unistd.h> |
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82 | # include <sys/time.h> |
177 | # include <sys/time.h> |
83 | # include <sys/wait.h> |
178 | # include <sys/wait.h> |
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179 | # include <unistd.h> |
84 | #else |
180 | #else |
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181 | # include <io.h> |
85 | # define WIN32_LEAN_AND_MEAN |
182 | # define WIN32_LEAN_AND_MEAN |
86 | # include <windows.h> |
183 | # include <windows.h> |
87 | # ifndef EV_SELECT_IS_WINSOCKET |
184 | # ifndef EV_SELECT_IS_WINSOCKET |
88 | # define EV_SELECT_IS_WINSOCKET 1 |
185 | # define EV_SELECT_IS_WINSOCKET 1 |
89 | # endif |
186 | # endif |
90 | #endif |
187 | #endif |
91 | |
188 | |
92 | /**/ |
189 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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190 | |
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191 | /* try to deduce the maximum number of signals on this platform */ |
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192 | #if defined (EV_NSIG) |
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193 | /* use what's provided */ |
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194 | #elif defined (NSIG) |
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195 | # define EV_NSIG (NSIG) |
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196 | #elif defined(_NSIG) |
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197 | # define EV_NSIG (_NSIG) |
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198 | #elif defined (SIGMAX) |
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199 | # define EV_NSIG (SIGMAX+1) |
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200 | #elif defined (SIG_MAX) |
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201 | # define EV_NSIG (SIG_MAX+1) |
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202 | #elif defined (_SIG_MAX) |
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203 | # define EV_NSIG (_SIG_MAX+1) |
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204 | #elif defined (MAXSIG) |
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205 | # define EV_NSIG (MAXSIG+1) |
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206 | #elif defined (MAX_SIG) |
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207 | # define EV_NSIG (MAX_SIG+1) |
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208 | #elif defined (SIGARRAYSIZE) |
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209 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
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210 | #elif defined (_sys_nsig) |
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211 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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212 | #else |
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213 | # error "unable to find value for NSIG, please report" |
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214 | /* to make it compile regardless, just remove the above line */ |
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215 | # define EV_NSIG 65 |
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216 | #endif |
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217 | |
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218 | #ifndef EV_USE_CLOCK_SYSCALL |
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219 | # if __linux && __GLIBC__ >= 2 |
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220 | # define EV_USE_CLOCK_SYSCALL 1 |
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221 | # else |
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222 | # define EV_USE_CLOCK_SYSCALL 0 |
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223 | # endif |
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224 | #endif |
93 | |
225 | |
94 | #ifndef EV_USE_MONOTONIC |
226 | #ifndef EV_USE_MONOTONIC |
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227 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
95 | # define EV_USE_MONOTONIC 1 |
228 | # define EV_USE_MONOTONIC 1 |
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229 | # else |
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230 | # define EV_USE_MONOTONIC 0 |
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231 | # endif |
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232 | #endif |
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233 | |
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234 | #ifndef EV_USE_REALTIME |
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235 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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236 | #endif |
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237 | |
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238 | #ifndef EV_USE_NANOSLEEP |
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239 | # if _POSIX_C_SOURCE >= 199309L |
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240 | # define EV_USE_NANOSLEEP 1 |
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241 | # else |
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242 | # define EV_USE_NANOSLEEP 0 |
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243 | # endif |
96 | #endif |
244 | #endif |
97 | |
245 | |
98 | #ifndef EV_USE_SELECT |
246 | #ifndef EV_USE_SELECT |
99 | # define EV_USE_SELECT 1 |
247 | # define EV_USE_SELECT 1 |
100 | # define EV_SELECT_USE_FD_SET 1 |
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101 | #endif |
248 | #endif |
102 | |
249 | |
103 | #ifndef EV_USE_POLL |
250 | #ifndef EV_USE_POLL |
104 | # ifdef _WIN32 |
251 | # ifdef _WIN32 |
105 | # define EV_USE_POLL 0 |
252 | # define EV_USE_POLL 0 |
… | |
… | |
107 | # define EV_USE_POLL 1 |
254 | # define EV_USE_POLL 1 |
108 | # endif |
255 | # endif |
109 | #endif |
256 | #endif |
110 | |
257 | |
111 | #ifndef EV_USE_EPOLL |
258 | #ifndef EV_USE_EPOLL |
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259 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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260 | # define EV_USE_EPOLL 1 |
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261 | # else |
112 | # define EV_USE_EPOLL 0 |
262 | # define EV_USE_EPOLL 0 |
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263 | # endif |
113 | #endif |
264 | #endif |
114 | |
265 | |
115 | #ifndef EV_USE_KQUEUE |
266 | #ifndef EV_USE_KQUEUE |
116 | # define EV_USE_KQUEUE 0 |
267 | # define EV_USE_KQUEUE 0 |
117 | #endif |
268 | #endif |
118 | |
269 | |
119 | #ifndef EV_USE_REALTIME |
270 | #ifndef EV_USE_PORT |
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271 | # define EV_USE_PORT 0 |
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272 | #endif |
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273 | |
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274 | #ifndef EV_USE_INOTIFY |
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275 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
120 | # define EV_USE_REALTIME 1 |
276 | # define EV_USE_INOTIFY 1 |
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277 | # else |
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278 | # define EV_USE_INOTIFY 0 |
121 | #endif |
279 | # endif |
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280 | #endif |
122 | |
281 | |
123 | /**/ |
282 | #ifndef EV_PID_HASHSIZE |
124 | |
283 | # if EV_MINIMAL |
125 | /* darwin simply cannot be helped */ |
284 | # define EV_PID_HASHSIZE 1 |
126 | #ifdef __APPLE__ |
285 | # else |
127 | # undef EV_USE_POLL |
286 | # define EV_PID_HASHSIZE 16 |
128 | # undef EV_USE_KQUEUE |
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129 | #endif |
287 | # endif |
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288 | #endif |
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289 | |
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290 | #ifndef EV_INOTIFY_HASHSIZE |
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291 | # if EV_MINIMAL |
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292 | # define EV_INOTIFY_HASHSIZE 1 |
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293 | # else |
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294 | # define EV_INOTIFY_HASHSIZE 16 |
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295 | # endif |
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296 | #endif |
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297 | |
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298 | #ifndef EV_USE_EVENTFD |
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299 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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300 | # define EV_USE_EVENTFD 1 |
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301 | # else |
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302 | # define EV_USE_EVENTFD 0 |
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303 | # endif |
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304 | #endif |
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305 | |
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306 | #ifndef EV_USE_SIGNALFD |
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307 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) |
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308 | # define EV_USE_SIGNALFD 1 |
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309 | # else |
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310 | # define EV_USE_SIGNALFD 0 |
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311 | # endif |
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312 | #endif |
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313 | |
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314 | #if 0 /* debugging */ |
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315 | # define EV_VERIFY 3 |
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316 | # define EV_USE_4HEAP 1 |
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317 | # define EV_HEAP_CACHE_AT 1 |
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318 | #endif |
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319 | |
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320 | #ifndef EV_VERIFY |
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321 | # define EV_VERIFY !EV_MINIMAL |
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322 | #endif |
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323 | |
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324 | #ifndef EV_USE_4HEAP |
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325 | # define EV_USE_4HEAP !EV_MINIMAL |
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326 | #endif |
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327 | |
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328 | #ifndef EV_HEAP_CACHE_AT |
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329 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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330 | #endif |
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331 | |
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332 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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333 | /* which makes programs even slower. might work on other unices, too. */ |
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334 | #if EV_USE_CLOCK_SYSCALL |
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335 | # include <syscall.h> |
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336 | # ifdef SYS_clock_gettime |
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337 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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338 | # undef EV_USE_MONOTONIC |
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339 | # define EV_USE_MONOTONIC 1 |
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340 | # else |
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341 | # undef EV_USE_CLOCK_SYSCALL |
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342 | # define EV_USE_CLOCK_SYSCALL 0 |
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343 | # endif |
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344 | #endif |
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345 | |
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346 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
130 | |
347 | |
131 | #ifndef CLOCK_MONOTONIC |
348 | #ifndef CLOCK_MONOTONIC |
132 | # undef EV_USE_MONOTONIC |
349 | # undef EV_USE_MONOTONIC |
133 | # define EV_USE_MONOTONIC 0 |
350 | # define EV_USE_MONOTONIC 0 |
134 | #endif |
351 | #endif |
… | |
… | |
136 | #ifndef CLOCK_REALTIME |
353 | #ifndef CLOCK_REALTIME |
137 | # undef EV_USE_REALTIME |
354 | # undef EV_USE_REALTIME |
138 | # define EV_USE_REALTIME 0 |
355 | # define EV_USE_REALTIME 0 |
139 | #endif |
356 | #endif |
140 | |
357 | |
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358 | #if !EV_STAT_ENABLE |
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359 | # undef EV_USE_INOTIFY |
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360 | # define EV_USE_INOTIFY 0 |
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361 | #endif |
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362 | |
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363 | #if !EV_USE_NANOSLEEP |
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364 | # ifndef _WIN32 |
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365 | # include <sys/select.h> |
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366 | # endif |
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367 | #endif |
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368 | |
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369 | #if EV_USE_INOTIFY |
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370 | # include <sys/utsname.h> |
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371 | # include <sys/statfs.h> |
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372 | # include <sys/inotify.h> |
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373 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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374 | # ifndef IN_DONT_FOLLOW |
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375 | # undef EV_USE_INOTIFY |
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376 | # define EV_USE_INOTIFY 0 |
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377 | # endif |
|
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378 | #endif |
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379 | |
141 | #if EV_SELECT_IS_WINSOCKET |
380 | #if EV_SELECT_IS_WINSOCKET |
142 | # include <winsock.h> |
381 | # include <winsock.h> |
143 | #endif |
382 | #endif |
144 | |
383 | |
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384 | #if EV_USE_EVENTFD |
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385 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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386 | # include <stdint.h> |
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387 | # ifndef EFD_NONBLOCK |
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388 | # define EFD_NONBLOCK O_NONBLOCK |
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389 | # endif |
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390 | # ifndef EFD_CLOEXEC |
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391 | # define EFD_CLOEXEC O_CLOEXEC |
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392 | # endif |
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393 | # ifdef __cplusplus |
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394 | extern "C" { |
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395 | # endif |
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396 | int eventfd (unsigned int initval, int flags); |
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397 | # ifdef __cplusplus |
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398 | } |
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399 | # endif |
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400 | #endif |
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401 | |
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402 | #if EV_USE_SIGNALFD |
|
|
403 | # include <sys/signalfd.h> |
|
|
404 | #endif |
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|
405 | |
145 | /**/ |
406 | /**/ |
146 | |
407 | |
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|
408 | #if EV_VERIFY >= 3 |
|
|
409 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
|
|
410 | #else |
|
|
411 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
412 | #endif |
|
|
413 | |
|
|
414 | /* |
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|
415 | * This is used to avoid floating point rounding problems. |
|
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416 | * It is added to ev_rt_now when scheduling periodics |
|
|
417 | * to ensure progress, time-wise, even when rounding |
|
|
418 | * errors are against us. |
|
|
419 | * This value is good at least till the year 4000. |
|
|
420 | * Better solutions welcome. |
|
|
421 | */ |
|
|
422 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
|
|
423 | |
147 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
424 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
148 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
425 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
149 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
150 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
426 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
151 | |
427 | |
152 | #ifdef EV_H |
|
|
153 | # include EV_H |
|
|
154 | #else |
|
|
155 | # include "ev.h" |
|
|
156 | #endif |
|
|
157 | |
|
|
158 | #if __GNUC__ >= 3 |
428 | #if __GNUC__ >= 4 |
159 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
429 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
160 | # define inline inline |
430 | # define noinline __attribute__ ((noinline)) |
161 | #else |
431 | #else |
162 | # define expect(expr,value) (expr) |
432 | # define expect(expr,value) (expr) |
163 | # define inline static |
433 | # define noinline |
|
|
434 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
435 | # define inline |
|
|
436 | # endif |
164 | #endif |
437 | #endif |
165 | |
438 | |
166 | #define expect_false(expr) expect ((expr) != 0, 0) |
439 | #define expect_false(expr) expect ((expr) != 0, 0) |
167 | #define expect_true(expr) expect ((expr) != 0, 1) |
440 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
441 | #define inline_size static inline |
168 | |
442 | |
|
|
443 | #if EV_MINIMAL |
|
|
444 | # define inline_speed static noinline |
|
|
445 | #else |
|
|
446 | # define inline_speed static inline |
|
|
447 | #endif |
|
|
448 | |
169 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
449 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
450 | |
|
|
451 | #if EV_MINPRI == EV_MAXPRI |
|
|
452 | # define ABSPRI(w) (((W)w), 0) |
|
|
453 | #else |
170 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
454 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
455 | #endif |
171 | |
456 | |
172 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
457 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
458 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
173 | |
459 | |
174 | typedef struct ev_watcher *W; |
460 | typedef ev_watcher *W; |
175 | typedef struct ev_watcher_list *WL; |
461 | typedef ev_watcher_list *WL; |
176 | typedef struct ev_watcher_time *WT; |
462 | typedef ev_watcher_time *WT; |
177 | |
463 | |
|
|
464 | #define ev_active(w) ((W)(w))->active |
|
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465 | #define ev_at(w) ((WT)(w))->at |
|
|
466 | |
|
|
467 | #if EV_USE_REALTIME |
|
|
468 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
469 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
470 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
471 | #endif |
|
|
472 | |
|
|
473 | #if EV_USE_MONOTONIC |
178 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
474 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
475 | #endif |
179 | |
476 | |
180 | #ifdef _WIN32 |
477 | #ifdef _WIN32 |
181 | # include "ev_win32.c" |
478 | # include "ev_win32.c" |
182 | #endif |
479 | #endif |
183 | |
480 | |
184 | /*****************************************************************************/ |
481 | /*****************************************************************************/ |
185 | |
482 | |
186 | static void (*syserr_cb)(const char *msg); |
483 | static void (*syserr_cb)(const char *msg); |
187 | |
484 | |
|
|
485 | void |
188 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
486 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
189 | { |
487 | { |
190 | syserr_cb = cb; |
488 | syserr_cb = cb; |
191 | } |
489 | } |
192 | |
490 | |
193 | static void |
491 | static void noinline |
194 | syserr (const char *msg) |
492 | ev_syserr (const char *msg) |
195 | { |
493 | { |
196 | if (!msg) |
494 | if (!msg) |
197 | msg = "(libev) system error"; |
495 | msg = "(libev) system error"; |
198 | |
496 | |
199 | if (syserr_cb) |
497 | if (syserr_cb) |
… | |
… | |
203 | perror (msg); |
501 | perror (msg); |
204 | abort (); |
502 | abort (); |
205 | } |
503 | } |
206 | } |
504 | } |
207 | |
505 | |
|
|
506 | static void * |
|
|
507 | ev_realloc_emul (void *ptr, long size) |
|
|
508 | { |
|
|
509 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
510 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
511 | * the single unix specification, so work around them here. |
|
|
512 | */ |
|
|
513 | |
|
|
514 | if (size) |
|
|
515 | return realloc (ptr, size); |
|
|
516 | |
|
|
517 | free (ptr); |
|
|
518 | return 0; |
|
|
519 | } |
|
|
520 | |
208 | static void *(*alloc)(void *ptr, long size); |
521 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
209 | |
522 | |
|
|
523 | void |
210 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
524 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
211 | { |
525 | { |
212 | alloc = cb; |
526 | alloc = cb; |
213 | } |
527 | } |
214 | |
528 | |
215 | static void * |
529 | inline_speed void * |
216 | ev_realloc (void *ptr, long size) |
530 | ev_realloc (void *ptr, long size) |
217 | { |
531 | { |
218 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
532 | ptr = alloc (ptr, size); |
219 | |
533 | |
220 | if (!ptr && size) |
534 | if (!ptr && size) |
221 | { |
535 | { |
222 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
536 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
223 | abort (); |
537 | abort (); |
… | |
… | |
229 | #define ev_malloc(size) ev_realloc (0, (size)) |
543 | #define ev_malloc(size) ev_realloc (0, (size)) |
230 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
544 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
231 | |
545 | |
232 | /*****************************************************************************/ |
546 | /*****************************************************************************/ |
233 | |
547 | |
|
|
548 | /* set in reify when reification needed */ |
|
|
549 | #define EV_ANFD_REIFY 1 |
|
|
550 | |
|
|
551 | /* file descriptor info structure */ |
234 | typedef struct |
552 | typedef struct |
235 | { |
553 | { |
236 | WL head; |
554 | WL head; |
237 | unsigned char events; |
555 | unsigned char events; /* the events watched for */ |
|
|
556 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
557 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
238 | unsigned char reify; |
558 | unsigned char unused; |
|
|
559 | #if EV_USE_EPOLL |
|
|
560 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
561 | #endif |
239 | #if EV_SELECT_IS_WINSOCKET |
562 | #if EV_SELECT_IS_WINSOCKET |
240 | SOCKET handle; |
563 | SOCKET handle; |
241 | #endif |
564 | #endif |
242 | } ANFD; |
565 | } ANFD; |
243 | |
566 | |
|
|
567 | /* stores the pending event set for a given watcher */ |
244 | typedef struct |
568 | typedef struct |
245 | { |
569 | { |
246 | W w; |
570 | W w; |
247 | int events; |
571 | int events; /* the pending event set for the given watcher */ |
248 | } ANPENDING; |
572 | } ANPENDING; |
|
|
573 | |
|
|
574 | #if EV_USE_INOTIFY |
|
|
575 | /* hash table entry per inotify-id */ |
|
|
576 | typedef struct |
|
|
577 | { |
|
|
578 | WL head; |
|
|
579 | } ANFS; |
|
|
580 | #endif |
|
|
581 | |
|
|
582 | /* Heap Entry */ |
|
|
583 | #if EV_HEAP_CACHE_AT |
|
|
584 | /* a heap element */ |
|
|
585 | typedef struct { |
|
|
586 | ev_tstamp at; |
|
|
587 | WT w; |
|
|
588 | } ANHE; |
|
|
589 | |
|
|
590 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
591 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
592 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
593 | #else |
|
|
594 | /* a heap element */ |
|
|
595 | typedef WT ANHE; |
|
|
596 | |
|
|
597 | #define ANHE_w(he) (he) |
|
|
598 | #define ANHE_at(he) (he)->at |
|
|
599 | #define ANHE_at_cache(he) |
|
|
600 | #endif |
249 | |
601 | |
250 | #if EV_MULTIPLICITY |
602 | #if EV_MULTIPLICITY |
251 | |
603 | |
252 | struct ev_loop |
604 | struct ev_loop |
253 | { |
605 | { |
… | |
… | |
257 | #include "ev_vars.h" |
609 | #include "ev_vars.h" |
258 | #undef VAR |
610 | #undef VAR |
259 | }; |
611 | }; |
260 | #include "ev_wrap.h" |
612 | #include "ev_wrap.h" |
261 | |
613 | |
262 | struct ev_loop default_loop_struct; |
614 | static struct ev_loop default_loop_struct; |
263 | static struct ev_loop *default_loop; |
615 | struct ev_loop *ev_default_loop_ptr; |
264 | |
616 | |
265 | #else |
617 | #else |
266 | |
618 | |
267 | ev_tstamp ev_rt_now; |
619 | ev_tstamp ev_rt_now; |
268 | #define VAR(name,decl) static decl; |
620 | #define VAR(name,decl) static decl; |
269 | #include "ev_vars.h" |
621 | #include "ev_vars.h" |
270 | #undef VAR |
622 | #undef VAR |
271 | |
623 | |
272 | static int default_loop; |
624 | static int ev_default_loop_ptr; |
273 | |
625 | |
274 | #endif |
626 | #endif |
|
|
627 | |
|
|
628 | #if EV_MINIMAL < 2 |
|
|
629 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
630 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
631 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
632 | #else |
|
|
633 | # define EV_RELEASE_CB (void)0 |
|
|
634 | # define EV_ACQUIRE_CB (void)0 |
|
|
635 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
636 | #endif |
|
|
637 | |
|
|
638 | #define EVUNLOOP_RECURSE 0x80 |
275 | |
639 | |
276 | /*****************************************************************************/ |
640 | /*****************************************************************************/ |
277 | |
641 | |
|
|
642 | #ifndef EV_HAVE_EV_TIME |
278 | ev_tstamp |
643 | ev_tstamp |
279 | ev_time (void) |
644 | ev_time (void) |
280 | { |
645 | { |
281 | #if EV_USE_REALTIME |
646 | #if EV_USE_REALTIME |
|
|
647 | if (expect_true (have_realtime)) |
|
|
648 | { |
282 | struct timespec ts; |
649 | struct timespec ts; |
283 | clock_gettime (CLOCK_REALTIME, &ts); |
650 | clock_gettime (CLOCK_REALTIME, &ts); |
284 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
651 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
285 | #else |
652 | } |
|
|
653 | #endif |
|
|
654 | |
286 | struct timeval tv; |
655 | struct timeval tv; |
287 | gettimeofday (&tv, 0); |
656 | gettimeofday (&tv, 0); |
288 | return tv.tv_sec + tv.tv_usec * 1e-6; |
657 | return tv.tv_sec + tv.tv_usec * 1e-6; |
289 | #endif |
|
|
290 | } |
658 | } |
|
|
659 | #endif |
291 | |
660 | |
292 | inline ev_tstamp |
661 | inline_size ev_tstamp |
293 | get_clock (void) |
662 | get_clock (void) |
294 | { |
663 | { |
295 | #if EV_USE_MONOTONIC |
664 | #if EV_USE_MONOTONIC |
296 | if (expect_true (have_monotonic)) |
665 | if (expect_true (have_monotonic)) |
297 | { |
666 | { |
… | |
… | |
310 | { |
679 | { |
311 | return ev_rt_now; |
680 | return ev_rt_now; |
312 | } |
681 | } |
313 | #endif |
682 | #endif |
314 | |
683 | |
315 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
684 | void |
|
|
685 | ev_sleep (ev_tstamp delay) |
|
|
686 | { |
|
|
687 | if (delay > 0.) |
|
|
688 | { |
|
|
689 | #if EV_USE_NANOSLEEP |
|
|
690 | struct timespec ts; |
|
|
691 | |
|
|
692 | ts.tv_sec = (time_t)delay; |
|
|
693 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
694 | |
|
|
695 | nanosleep (&ts, 0); |
|
|
696 | #elif defined(_WIN32) |
|
|
697 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
698 | #else |
|
|
699 | struct timeval tv; |
|
|
700 | |
|
|
701 | tv.tv_sec = (time_t)delay; |
|
|
702 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
703 | |
|
|
704 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
705 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
706 | /* by older ones */ |
|
|
707 | select (0, 0, 0, 0, &tv); |
|
|
708 | #endif |
|
|
709 | } |
|
|
710 | } |
|
|
711 | |
|
|
712 | /*****************************************************************************/ |
|
|
713 | |
|
|
714 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
715 | |
|
|
716 | /* find a suitable new size for the given array, */ |
|
|
717 | /* hopefully by rounding to a ncie-to-malloc size */ |
|
|
718 | inline_size int |
|
|
719 | array_nextsize (int elem, int cur, int cnt) |
|
|
720 | { |
|
|
721 | int ncur = cur + 1; |
|
|
722 | |
|
|
723 | do |
|
|
724 | ncur <<= 1; |
|
|
725 | while (cnt > ncur); |
|
|
726 | |
|
|
727 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
728 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
729 | { |
|
|
730 | ncur *= elem; |
|
|
731 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
732 | ncur = ncur - sizeof (void *) * 4; |
|
|
733 | ncur /= elem; |
|
|
734 | } |
|
|
735 | |
|
|
736 | return ncur; |
|
|
737 | } |
|
|
738 | |
|
|
739 | static noinline void * |
|
|
740 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
741 | { |
|
|
742 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
743 | return ev_realloc (base, elem * *cur); |
|
|
744 | } |
|
|
745 | |
|
|
746 | #define array_init_zero(base,count) \ |
|
|
747 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
316 | |
748 | |
317 | #define array_needsize(type,base,cur,cnt,init) \ |
749 | #define array_needsize(type,base,cur,cnt,init) \ |
318 | if (expect_false ((cnt) > cur)) \ |
750 | if (expect_false ((cnt) > (cur))) \ |
319 | { \ |
751 | { \ |
320 | int newcnt = cur; \ |
752 | int ocur_ = (cur); \ |
321 | do \ |
753 | (base) = (type *)array_realloc \ |
322 | { \ |
754 | (sizeof (type), (base), &(cur), (cnt)); \ |
323 | newcnt = array_roundsize (type, newcnt << 1); \ |
755 | init ((base) + (ocur_), (cur) - ocur_); \ |
324 | } \ |
|
|
325 | while ((cnt) > newcnt); \ |
|
|
326 | \ |
|
|
327 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
328 | init (base + cur, newcnt - cur); \ |
|
|
329 | cur = newcnt; \ |
|
|
330 | } |
756 | } |
331 | |
757 | |
|
|
758 | #if 0 |
332 | #define array_slim(type,stem) \ |
759 | #define array_slim(type,stem) \ |
333 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
760 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
334 | { \ |
761 | { \ |
335 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
762 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
336 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
763 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
337 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
764 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
338 | } |
765 | } |
|
|
766 | #endif |
339 | |
767 | |
340 | #define array_free(stem, idx) \ |
768 | #define array_free(stem, idx) \ |
341 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
769 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
342 | |
770 | |
343 | /*****************************************************************************/ |
771 | /*****************************************************************************/ |
344 | |
772 | |
345 | static void |
773 | /* dummy callback for pending events */ |
346 | anfds_init (ANFD *base, int count) |
774 | static void noinline |
|
|
775 | pendingcb (EV_P_ ev_prepare *w, int revents) |
347 | { |
776 | { |
348 | while (count--) |
|
|
349 | { |
|
|
350 | base->head = 0; |
|
|
351 | base->events = EV_NONE; |
|
|
352 | base->reify = 0; |
|
|
353 | |
|
|
354 | ++base; |
|
|
355 | } |
|
|
356 | } |
777 | } |
357 | |
778 | |
358 | void |
779 | void noinline |
359 | ev_feed_event (EV_P_ void *w, int revents) |
780 | ev_feed_event (EV_P_ void *w, int revents) |
360 | { |
781 | { |
361 | W w_ = (W)w; |
782 | W w_ = (W)w; |
|
|
783 | int pri = ABSPRI (w_); |
362 | |
784 | |
363 | if (w_->pending) |
785 | if (expect_false (w_->pending)) |
|
|
786 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
787 | else |
364 | { |
788 | { |
|
|
789 | w_->pending = ++pendingcnt [pri]; |
|
|
790 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
791 | pendings [pri][w_->pending - 1].w = w_; |
365 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
792 | pendings [pri][w_->pending - 1].events = revents; |
366 | return; |
|
|
367 | } |
793 | } |
368 | |
|
|
369 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
370 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
|
|
371 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
372 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
373 | } |
794 | } |
374 | |
795 | |
375 | static void |
796 | inline_speed void |
|
|
797 | feed_reverse (EV_P_ W w) |
|
|
798 | { |
|
|
799 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
800 | rfeeds [rfeedcnt++] = w; |
|
|
801 | } |
|
|
802 | |
|
|
803 | inline_size void |
|
|
804 | feed_reverse_done (EV_P_ int revents) |
|
|
805 | { |
|
|
806 | do |
|
|
807 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
808 | while (rfeedcnt); |
|
|
809 | } |
|
|
810 | |
|
|
811 | inline_speed void |
376 | queue_events (EV_P_ W *events, int eventcnt, int type) |
812 | queue_events (EV_P_ W *events, int eventcnt, int type) |
377 | { |
813 | { |
378 | int i; |
814 | int i; |
379 | |
815 | |
380 | for (i = 0; i < eventcnt; ++i) |
816 | for (i = 0; i < eventcnt; ++i) |
381 | ev_feed_event (EV_A_ events [i], type); |
817 | ev_feed_event (EV_A_ events [i], type); |
382 | } |
818 | } |
383 | |
819 | |
|
|
820 | /*****************************************************************************/ |
|
|
821 | |
384 | inline void |
822 | inline_speed void |
385 | fd_event (EV_P_ int fd, int revents) |
823 | fd_event_nc (EV_P_ int fd, int revents) |
386 | { |
824 | { |
387 | ANFD *anfd = anfds + fd; |
825 | ANFD *anfd = anfds + fd; |
388 | struct ev_io *w; |
826 | ev_io *w; |
389 | |
827 | |
390 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
828 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
391 | { |
829 | { |
392 | int ev = w->events & revents; |
830 | int ev = w->events & revents; |
393 | |
831 | |
394 | if (ev) |
832 | if (ev) |
395 | ev_feed_event (EV_A_ (W)w, ev); |
833 | ev_feed_event (EV_A_ (W)w, ev); |
396 | } |
834 | } |
397 | } |
835 | } |
398 | |
836 | |
|
|
837 | /* do not submit kernel events for fds that have reify set */ |
|
|
838 | /* because that means they changed while we were polling for new events */ |
|
|
839 | inline_speed void |
|
|
840 | fd_event (EV_P_ int fd, int revents) |
|
|
841 | { |
|
|
842 | ANFD *anfd = anfds + fd; |
|
|
843 | |
|
|
844 | if (expect_true (!anfd->reify)) |
|
|
845 | fd_event_nc (EV_A_ fd, revents); |
|
|
846 | } |
|
|
847 | |
399 | void |
848 | void |
400 | ev_feed_fd_event (EV_P_ int fd, int revents) |
849 | ev_feed_fd_event (EV_P_ int fd, int revents) |
401 | { |
850 | { |
|
|
851 | if (fd >= 0 && fd < anfdmax) |
402 | fd_event (EV_A_ fd, revents); |
852 | fd_event_nc (EV_A_ fd, revents); |
403 | } |
853 | } |
404 | |
854 | |
405 | /*****************************************************************************/ |
855 | /* make sure the external fd watch events are in-sync */ |
406 | |
856 | /* with the kernel/libev internal state */ |
407 | static void |
857 | inline_size void |
408 | fd_reify (EV_P) |
858 | fd_reify (EV_P) |
409 | { |
859 | { |
410 | int i; |
860 | int i; |
411 | |
861 | |
412 | for (i = 0; i < fdchangecnt; ++i) |
862 | for (i = 0; i < fdchangecnt; ++i) |
413 | { |
863 | { |
414 | int fd = fdchanges [i]; |
864 | int fd = fdchanges [i]; |
415 | ANFD *anfd = anfds + fd; |
865 | ANFD *anfd = anfds + fd; |
416 | struct ev_io *w; |
866 | ev_io *w; |
417 | |
867 | |
418 | int events = 0; |
868 | unsigned char events = 0; |
419 | |
869 | |
420 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
870 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
421 | events |= w->events; |
871 | events |= (unsigned char)w->events; |
422 | |
872 | |
423 | #if EV_SELECT_IS_WINSOCKET |
873 | #if EV_SELECT_IS_WINSOCKET |
424 | if (events) |
874 | if (events) |
425 | { |
875 | { |
426 | unsigned long argp; |
876 | unsigned long arg; |
|
|
877 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
878 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
879 | #else |
427 | anfd->handle = _get_osfhandle (fd); |
880 | anfd->handle = _get_osfhandle (fd); |
|
|
881 | #endif |
428 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
882 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
429 | } |
883 | } |
430 | #endif |
884 | #endif |
431 | |
885 | |
|
|
886 | { |
|
|
887 | unsigned char o_events = anfd->events; |
|
|
888 | unsigned char o_reify = anfd->reify; |
|
|
889 | |
432 | anfd->reify = 0; |
890 | anfd->reify = 0; |
433 | |
|
|
434 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
435 | anfd->events = events; |
891 | anfd->events = events; |
|
|
892 | |
|
|
893 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
894 | backend_modify (EV_A_ fd, o_events, events); |
|
|
895 | } |
436 | } |
896 | } |
437 | |
897 | |
438 | fdchangecnt = 0; |
898 | fdchangecnt = 0; |
439 | } |
899 | } |
440 | |
900 | |
441 | static void |
901 | /* something about the given fd changed */ |
|
|
902 | inline_size void |
442 | fd_change (EV_P_ int fd) |
903 | fd_change (EV_P_ int fd, int flags) |
443 | { |
904 | { |
444 | if (anfds [fd].reify) |
905 | unsigned char reify = anfds [fd].reify; |
445 | return; |
|
|
446 | |
|
|
447 | anfds [fd].reify = 1; |
906 | anfds [fd].reify |= flags; |
448 | |
907 | |
|
|
908 | if (expect_true (!reify)) |
|
|
909 | { |
449 | ++fdchangecnt; |
910 | ++fdchangecnt; |
450 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
911 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
451 | fdchanges [fdchangecnt - 1] = fd; |
912 | fdchanges [fdchangecnt - 1] = fd; |
|
|
913 | } |
452 | } |
914 | } |
453 | |
915 | |
454 | static void |
916 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
917 | inline_speed void |
455 | fd_kill (EV_P_ int fd) |
918 | fd_kill (EV_P_ int fd) |
456 | { |
919 | { |
457 | struct ev_io *w; |
920 | ev_io *w; |
458 | |
921 | |
459 | while ((w = (struct ev_io *)anfds [fd].head)) |
922 | while ((w = (ev_io *)anfds [fd].head)) |
460 | { |
923 | { |
461 | ev_io_stop (EV_A_ w); |
924 | ev_io_stop (EV_A_ w); |
462 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
925 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
463 | } |
926 | } |
464 | } |
927 | } |
465 | |
928 | |
466 | static int |
929 | /* check whether the given fd is atcually valid, for error recovery */ |
|
|
930 | inline_size int |
467 | fd_valid (int fd) |
931 | fd_valid (int fd) |
468 | { |
932 | { |
469 | #ifdef _WIN32 |
933 | #ifdef _WIN32 |
470 | return _get_osfhandle (fd) != -1; |
934 | return _get_osfhandle (fd) != -1; |
471 | #else |
935 | #else |
472 | return fcntl (fd, F_GETFD) != -1; |
936 | return fcntl (fd, F_GETFD) != -1; |
473 | #endif |
937 | #endif |
474 | } |
938 | } |
475 | |
939 | |
476 | /* called on EBADF to verify fds */ |
940 | /* called on EBADF to verify fds */ |
477 | static void |
941 | static void noinline |
478 | fd_ebadf (EV_P) |
942 | fd_ebadf (EV_P) |
479 | { |
943 | { |
480 | int fd; |
944 | int fd; |
481 | |
945 | |
482 | for (fd = 0; fd < anfdmax; ++fd) |
946 | for (fd = 0; fd < anfdmax; ++fd) |
483 | if (anfds [fd].events) |
947 | if (anfds [fd].events) |
484 | if (!fd_valid (fd) == -1 && errno == EBADF) |
948 | if (!fd_valid (fd) && errno == EBADF) |
485 | fd_kill (EV_A_ fd); |
949 | fd_kill (EV_A_ fd); |
486 | } |
950 | } |
487 | |
951 | |
488 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
952 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
489 | static void |
953 | static void noinline |
490 | fd_enomem (EV_P) |
954 | fd_enomem (EV_P) |
491 | { |
955 | { |
492 | int fd; |
956 | int fd; |
493 | |
957 | |
494 | for (fd = anfdmax; fd--; ) |
958 | for (fd = anfdmax; fd--; ) |
495 | if (anfds [fd].events) |
959 | if (anfds [fd].events) |
496 | { |
960 | { |
497 | fd_kill (EV_A_ fd); |
961 | fd_kill (EV_A_ fd); |
498 | return; |
962 | break; |
499 | } |
963 | } |
500 | } |
964 | } |
501 | |
965 | |
502 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
966 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
503 | static void |
967 | static void noinline |
504 | fd_rearm_all (EV_P) |
968 | fd_rearm_all (EV_P) |
505 | { |
969 | { |
506 | int fd; |
970 | int fd; |
507 | |
971 | |
508 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
509 | for (fd = 0; fd < anfdmax; ++fd) |
972 | for (fd = 0; fd < anfdmax; ++fd) |
510 | if (anfds [fd].events) |
973 | if (anfds [fd].events) |
511 | { |
974 | { |
512 | anfds [fd].events = 0; |
975 | anfds [fd].events = 0; |
513 | fd_change (EV_A_ fd); |
976 | anfds [fd].emask = 0; |
|
|
977 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
514 | } |
978 | } |
515 | } |
979 | } |
516 | |
980 | |
517 | /*****************************************************************************/ |
981 | /*****************************************************************************/ |
518 | |
982 | |
519 | static void |
983 | /* |
520 | upheap (WT *heap, int k) |
984 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
521 | { |
985 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
522 | WT w = heap [k]; |
986 | * the branching factor of the d-tree. |
|
|
987 | */ |
523 | |
988 | |
524 | while (k && heap [k >> 1]->at > w->at) |
989 | /* |
525 | { |
990 | * at the moment we allow libev the luxury of two heaps, |
526 | heap [k] = heap [k >> 1]; |
991 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
527 | ((W)heap [k])->active = k + 1; |
992 | * which is more cache-efficient. |
528 | k >>= 1; |
993 | * the difference is about 5% with 50000+ watchers. |
529 | } |
994 | */ |
|
|
995 | #if EV_USE_4HEAP |
530 | |
996 | |
531 | heap [k] = w; |
997 | #define DHEAP 4 |
532 | ((W)heap [k])->active = k + 1; |
998 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
999 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1000 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
533 | |
1001 | |
534 | } |
1002 | /* away from the root */ |
535 | |
1003 | inline_speed void |
536 | static void |
|
|
537 | downheap (WT *heap, int N, int k) |
1004 | downheap (ANHE *heap, int N, int k) |
538 | { |
1005 | { |
539 | WT w = heap [k]; |
1006 | ANHE he = heap [k]; |
|
|
1007 | ANHE *E = heap + N + HEAP0; |
540 | |
1008 | |
541 | while (k < (N >> 1)) |
1009 | for (;;) |
542 | { |
1010 | { |
543 | int j = k << 1; |
1011 | ev_tstamp minat; |
|
|
1012 | ANHE *minpos; |
|
|
1013 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
544 | |
1014 | |
545 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
1015 | /* find minimum child */ |
|
|
1016 | if (expect_true (pos + DHEAP - 1 < E)) |
546 | ++j; |
1017 | { |
547 | |
1018 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
548 | if (w->at <= heap [j]->at) |
1019 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1020 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1021 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1022 | } |
|
|
1023 | else if (pos < E) |
|
|
1024 | { |
|
|
1025 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1026 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1027 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1028 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1029 | } |
|
|
1030 | else |
549 | break; |
1031 | break; |
550 | |
1032 | |
|
|
1033 | if (ANHE_at (he) <= minat) |
|
|
1034 | break; |
|
|
1035 | |
|
|
1036 | heap [k] = *minpos; |
|
|
1037 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1038 | |
|
|
1039 | k = minpos - heap; |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | heap [k] = he; |
|
|
1043 | ev_active (ANHE_w (he)) = k; |
|
|
1044 | } |
|
|
1045 | |
|
|
1046 | #else /* 4HEAP */ |
|
|
1047 | |
|
|
1048 | #define HEAP0 1 |
|
|
1049 | #define HPARENT(k) ((k) >> 1) |
|
|
1050 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1051 | |
|
|
1052 | /* away from the root */ |
|
|
1053 | inline_speed void |
|
|
1054 | downheap (ANHE *heap, int N, int k) |
|
|
1055 | { |
|
|
1056 | ANHE he = heap [k]; |
|
|
1057 | |
|
|
1058 | for (;;) |
|
|
1059 | { |
|
|
1060 | int c = k << 1; |
|
|
1061 | |
|
|
1062 | if (c > N + HEAP0 - 1) |
|
|
1063 | break; |
|
|
1064 | |
|
|
1065 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1066 | ? 1 : 0; |
|
|
1067 | |
|
|
1068 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1069 | break; |
|
|
1070 | |
551 | heap [k] = heap [j]; |
1071 | heap [k] = heap [c]; |
552 | ((W)heap [k])->active = k + 1; |
1072 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1073 | |
553 | k = j; |
1074 | k = c; |
554 | } |
1075 | } |
555 | |
1076 | |
556 | heap [k] = w; |
1077 | heap [k] = he; |
557 | ((W)heap [k])->active = k + 1; |
1078 | ev_active (ANHE_w (he)) = k; |
558 | } |
1079 | } |
|
|
1080 | #endif |
559 | |
1081 | |
|
|
1082 | /* towards the root */ |
|
|
1083 | inline_speed void |
|
|
1084 | upheap (ANHE *heap, int k) |
|
|
1085 | { |
|
|
1086 | ANHE he = heap [k]; |
|
|
1087 | |
|
|
1088 | for (;;) |
|
|
1089 | { |
|
|
1090 | int p = HPARENT (k); |
|
|
1091 | |
|
|
1092 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1093 | break; |
|
|
1094 | |
|
|
1095 | heap [k] = heap [p]; |
|
|
1096 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1097 | k = p; |
|
|
1098 | } |
|
|
1099 | |
|
|
1100 | heap [k] = he; |
|
|
1101 | ev_active (ANHE_w (he)) = k; |
|
|
1102 | } |
|
|
1103 | |
|
|
1104 | /* move an element suitably so it is in a correct place */ |
560 | inline void |
1105 | inline_size void |
561 | adjustheap (WT *heap, int N, int k) |
1106 | adjustheap (ANHE *heap, int N, int k) |
562 | { |
1107 | { |
|
|
1108 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
563 | upheap (heap, k); |
1109 | upheap (heap, k); |
|
|
1110 | else |
564 | downheap (heap, N, k); |
1111 | downheap (heap, N, k); |
|
|
1112 | } |
|
|
1113 | |
|
|
1114 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1115 | inline_size void |
|
|
1116 | reheap (ANHE *heap, int N) |
|
|
1117 | { |
|
|
1118 | int i; |
|
|
1119 | |
|
|
1120 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1121 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1122 | for (i = 0; i < N; ++i) |
|
|
1123 | upheap (heap, i + HEAP0); |
565 | } |
1124 | } |
566 | |
1125 | |
567 | /*****************************************************************************/ |
1126 | /*****************************************************************************/ |
568 | |
1127 | |
|
|
1128 | /* associate signal watchers to a signal signal */ |
569 | typedef struct |
1129 | typedef struct |
570 | { |
1130 | { |
|
|
1131 | EV_ATOMIC_T pending; |
|
|
1132 | #if EV_MULTIPLICITY |
|
|
1133 | EV_P; |
|
|
1134 | #endif |
571 | WL head; |
1135 | WL head; |
572 | sig_atomic_t volatile gotsig; |
|
|
573 | } ANSIG; |
1136 | } ANSIG; |
574 | |
1137 | |
575 | static ANSIG *signals; |
1138 | static ANSIG signals [EV_NSIG - 1]; |
576 | static int signalmax; |
|
|
577 | |
1139 | |
578 | static int sigpipe [2]; |
1140 | /*****************************************************************************/ |
579 | static sig_atomic_t volatile gotsig; |
|
|
580 | static struct ev_io sigev; |
|
|
581 | |
1141 | |
582 | static void |
1142 | /* used to prepare libev internal fd's */ |
583 | signals_init (ANSIG *base, int count) |
1143 | /* this is not fork-safe */ |
584 | { |
|
|
585 | while (count--) |
|
|
586 | { |
|
|
587 | base->head = 0; |
|
|
588 | base->gotsig = 0; |
|
|
589 | |
|
|
590 | ++base; |
|
|
591 | } |
|
|
592 | } |
|
|
593 | |
|
|
594 | static void |
|
|
595 | sighandler (int signum) |
|
|
596 | { |
|
|
597 | #if _WIN32 |
|
|
598 | signal (signum, sighandler); |
|
|
599 | #endif |
|
|
600 | |
|
|
601 | signals [signum - 1].gotsig = 1; |
|
|
602 | |
|
|
603 | if (!gotsig) |
|
|
604 | { |
|
|
605 | int old_errno = errno; |
|
|
606 | gotsig = 1; |
|
|
607 | write (sigpipe [1], &signum, 1); |
|
|
608 | errno = old_errno; |
|
|
609 | } |
|
|
610 | } |
|
|
611 | |
|
|
612 | void |
|
|
613 | ev_feed_signal_event (EV_P_ int signum) |
|
|
614 | { |
|
|
615 | WL w; |
|
|
616 | |
|
|
617 | #if EV_MULTIPLICITY |
|
|
618 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
|
|
619 | #endif |
|
|
620 | |
|
|
621 | --signum; |
|
|
622 | |
|
|
623 | if (signum < 0 || signum >= signalmax) |
|
|
624 | return; |
|
|
625 | |
|
|
626 | signals [signum].gotsig = 0; |
|
|
627 | |
|
|
628 | for (w = signals [signum].head; w; w = w->next) |
|
|
629 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
630 | } |
|
|
631 | |
|
|
632 | static void |
|
|
633 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
634 | { |
|
|
635 | int signum; |
|
|
636 | |
|
|
637 | read (sigpipe [0], &revents, 1); |
|
|
638 | gotsig = 0; |
|
|
639 | |
|
|
640 | for (signum = signalmax; signum--; ) |
|
|
641 | if (signals [signum].gotsig) |
|
|
642 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
643 | } |
|
|
644 | |
|
|
645 | inline void |
1144 | inline_speed void |
646 | fd_intern (int fd) |
1145 | fd_intern (int fd) |
647 | { |
1146 | { |
648 | #ifdef _WIN32 |
1147 | #ifdef _WIN32 |
649 | int arg = 1; |
1148 | unsigned long arg = 1; |
650 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1149 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
651 | #else |
1150 | #else |
652 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1151 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
653 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1152 | fcntl (fd, F_SETFL, O_NONBLOCK); |
654 | #endif |
1153 | #endif |
655 | } |
1154 | } |
656 | |
1155 | |
|
|
1156 | static void noinline |
|
|
1157 | evpipe_init (EV_P) |
|
|
1158 | { |
|
|
1159 | if (!ev_is_active (&pipe_w)) |
|
|
1160 | { |
|
|
1161 | #if EV_USE_EVENTFD |
|
|
1162 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1163 | if (evfd < 0 && errno == EINVAL) |
|
|
1164 | evfd = eventfd (0, 0); |
|
|
1165 | |
|
|
1166 | if (evfd >= 0) |
|
|
1167 | { |
|
|
1168 | evpipe [0] = -1; |
|
|
1169 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1170 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1171 | } |
|
|
1172 | else |
|
|
1173 | #endif |
|
|
1174 | { |
|
|
1175 | while (pipe (evpipe)) |
|
|
1176 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1177 | |
|
|
1178 | fd_intern (evpipe [0]); |
|
|
1179 | fd_intern (evpipe [1]); |
|
|
1180 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1181 | } |
|
|
1182 | |
|
|
1183 | ev_io_start (EV_A_ &pipe_w); |
|
|
1184 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1185 | } |
|
|
1186 | } |
|
|
1187 | |
|
|
1188 | inline_size void |
|
|
1189 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1190 | { |
|
|
1191 | if (!*flag) |
|
|
1192 | { |
|
|
1193 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1194 | |
|
|
1195 | *flag = 1; |
|
|
1196 | |
|
|
1197 | #if EV_USE_EVENTFD |
|
|
1198 | if (evfd >= 0) |
|
|
1199 | { |
|
|
1200 | uint64_t counter = 1; |
|
|
1201 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1202 | } |
|
|
1203 | else |
|
|
1204 | #endif |
|
|
1205 | write (evpipe [1], &old_errno, 1); |
|
|
1206 | |
|
|
1207 | errno = old_errno; |
|
|
1208 | } |
|
|
1209 | } |
|
|
1210 | |
|
|
1211 | /* called whenever the libev signal pipe */ |
|
|
1212 | /* got some events (signal, async) */ |
657 | static void |
1213 | static void |
658 | siginit (EV_P) |
1214 | pipecb (EV_P_ ev_io *iow, int revents) |
659 | { |
1215 | { |
660 | fd_intern (sigpipe [0]); |
1216 | int i; |
661 | fd_intern (sigpipe [1]); |
|
|
662 | |
1217 | |
663 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
1218 | #if EV_USE_EVENTFD |
664 | ev_io_start (EV_A_ &sigev); |
1219 | if (evfd >= 0) |
665 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1220 | { |
|
|
1221 | uint64_t counter; |
|
|
1222 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1223 | } |
|
|
1224 | else |
|
|
1225 | #endif |
|
|
1226 | { |
|
|
1227 | char dummy; |
|
|
1228 | read (evpipe [0], &dummy, 1); |
|
|
1229 | } |
|
|
1230 | |
|
|
1231 | if (sig_pending) |
|
|
1232 | { |
|
|
1233 | sig_pending = 0; |
|
|
1234 | |
|
|
1235 | for (i = EV_NSIG - 1; i--; ) |
|
|
1236 | if (expect_false (signals [i].pending)) |
|
|
1237 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1238 | } |
|
|
1239 | |
|
|
1240 | #if EV_ASYNC_ENABLE |
|
|
1241 | if (async_pending) |
|
|
1242 | { |
|
|
1243 | async_pending = 0; |
|
|
1244 | |
|
|
1245 | for (i = asynccnt; i--; ) |
|
|
1246 | if (asyncs [i]->sent) |
|
|
1247 | { |
|
|
1248 | asyncs [i]->sent = 0; |
|
|
1249 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1250 | } |
|
|
1251 | } |
|
|
1252 | #endif |
666 | } |
1253 | } |
667 | |
1254 | |
668 | /*****************************************************************************/ |
1255 | /*****************************************************************************/ |
669 | |
1256 | |
670 | static struct ev_child *childs [PID_HASHSIZE]; |
1257 | static void |
|
|
1258 | ev_sighandler (int signum) |
|
|
1259 | { |
|
|
1260 | #if EV_MULTIPLICITY |
|
|
1261 | EV_P = signals [signum - 1].loop; |
|
|
1262 | #endif |
|
|
1263 | |
|
|
1264 | #if _WIN32 |
|
|
1265 | signal (signum, ev_sighandler); |
|
|
1266 | #endif |
|
|
1267 | |
|
|
1268 | signals [signum - 1].pending = 1; |
|
|
1269 | evpipe_write (EV_A_ &sig_pending); |
|
|
1270 | } |
|
|
1271 | |
|
|
1272 | void noinline |
|
|
1273 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1274 | { |
|
|
1275 | WL w; |
|
|
1276 | |
|
|
1277 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1278 | return; |
|
|
1279 | |
|
|
1280 | --signum; |
|
|
1281 | |
|
|
1282 | #if EV_MULTIPLICITY |
|
|
1283 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
1284 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
1285 | |
|
|
1286 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
1287 | return; |
|
|
1288 | #endif |
|
|
1289 | |
|
|
1290 | signals [signum].pending = 0; |
|
|
1291 | |
|
|
1292 | for (w = signals [signum].head; w; w = w->next) |
|
|
1293 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1294 | } |
|
|
1295 | |
|
|
1296 | #if EV_USE_SIGNALFD |
|
|
1297 | static void |
|
|
1298 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
1299 | { |
|
|
1300 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
1301 | |
|
|
1302 | for (;;) |
|
|
1303 | { |
|
|
1304 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
1305 | |
|
|
1306 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
1307 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1308 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
1309 | |
|
|
1310 | if (res < (ssize_t)sizeof (si)) |
|
|
1311 | break; |
|
|
1312 | } |
|
|
1313 | } |
|
|
1314 | #endif |
|
|
1315 | |
|
|
1316 | /*****************************************************************************/ |
|
|
1317 | |
|
|
1318 | static WL childs [EV_PID_HASHSIZE]; |
671 | |
1319 | |
672 | #ifndef _WIN32 |
1320 | #ifndef _WIN32 |
673 | |
1321 | |
674 | static struct ev_signal childev; |
1322 | static ev_signal childev; |
|
|
1323 | |
|
|
1324 | #ifndef WIFCONTINUED |
|
|
1325 | # define WIFCONTINUED(status) 0 |
|
|
1326 | #endif |
|
|
1327 | |
|
|
1328 | /* handle a single child status event */ |
|
|
1329 | inline_speed void |
|
|
1330 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1331 | { |
|
|
1332 | ev_child *w; |
|
|
1333 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1334 | |
|
|
1335 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1336 | { |
|
|
1337 | if ((w->pid == pid || !w->pid) |
|
|
1338 | && (!traced || (w->flags & 1))) |
|
|
1339 | { |
|
|
1340 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1341 | w->rpid = pid; |
|
|
1342 | w->rstatus = status; |
|
|
1343 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1344 | } |
|
|
1345 | } |
|
|
1346 | } |
675 | |
1347 | |
676 | #ifndef WCONTINUED |
1348 | #ifndef WCONTINUED |
677 | # define WCONTINUED 0 |
1349 | # define WCONTINUED 0 |
678 | #endif |
1350 | #endif |
679 | |
1351 | |
|
|
1352 | /* called on sigchld etc., calls waitpid */ |
680 | static void |
1353 | static void |
681 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
682 | { |
|
|
683 | struct ev_child *w; |
|
|
684 | |
|
|
685 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
686 | if (w->pid == pid || !w->pid) |
|
|
687 | { |
|
|
688 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
689 | w->rpid = pid; |
|
|
690 | w->rstatus = status; |
|
|
691 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
692 | } |
|
|
693 | } |
|
|
694 | |
|
|
695 | static void |
|
|
696 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1354 | childcb (EV_P_ ev_signal *sw, int revents) |
697 | { |
1355 | { |
698 | int pid, status; |
1356 | int pid, status; |
699 | |
1357 | |
|
|
1358 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
700 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1359 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
701 | { |
1360 | if (!WCONTINUED |
|
|
1361 | || errno != EINVAL |
|
|
1362 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1363 | return; |
|
|
1364 | |
702 | /* make sure we are called again until all childs have been reaped */ |
1365 | /* make sure we are called again until all children have been reaped */ |
|
|
1366 | /* we need to do it this way so that the callback gets called before we continue */ |
703 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1367 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
704 | |
1368 | |
705 | child_reap (EV_A_ sw, pid, pid, status); |
1369 | child_reap (EV_A_ pid, pid, status); |
|
|
1370 | if (EV_PID_HASHSIZE > 1) |
706 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1371 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
707 | } |
|
|
708 | } |
1372 | } |
709 | |
1373 | |
710 | #endif |
1374 | #endif |
711 | |
1375 | |
712 | /*****************************************************************************/ |
1376 | /*****************************************************************************/ |
713 | |
1377 | |
|
|
1378 | #if EV_USE_PORT |
|
|
1379 | # include "ev_port.c" |
|
|
1380 | #endif |
714 | #if EV_USE_KQUEUE |
1381 | #if EV_USE_KQUEUE |
715 | # include "ev_kqueue.c" |
1382 | # include "ev_kqueue.c" |
716 | #endif |
1383 | #endif |
717 | #if EV_USE_EPOLL |
1384 | #if EV_USE_EPOLL |
718 | # include "ev_epoll.c" |
1385 | # include "ev_epoll.c" |
… | |
… | |
735 | { |
1402 | { |
736 | return EV_VERSION_MINOR; |
1403 | return EV_VERSION_MINOR; |
737 | } |
1404 | } |
738 | |
1405 | |
739 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1406 | /* return true if we are running with elevated privileges and should ignore env variables */ |
740 | static int |
1407 | int inline_size |
741 | enable_secure (void) |
1408 | enable_secure (void) |
742 | { |
1409 | { |
743 | #ifdef _WIN32 |
1410 | #ifdef _WIN32 |
744 | return 0; |
1411 | return 0; |
745 | #else |
1412 | #else |
… | |
… | |
747 | || getgid () != getegid (); |
1414 | || getgid () != getegid (); |
748 | #endif |
1415 | #endif |
749 | } |
1416 | } |
750 | |
1417 | |
751 | unsigned int |
1418 | unsigned int |
752 | ev_method (EV_P) |
1419 | ev_supported_backends (void) |
753 | { |
1420 | { |
754 | return method; |
1421 | unsigned int flags = 0; |
755 | } |
|
|
756 | |
1422 | |
757 | static void |
1423 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1424 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1425 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1426 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1427 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1428 | |
|
|
1429 | return flags; |
|
|
1430 | } |
|
|
1431 | |
|
|
1432 | unsigned int |
|
|
1433 | ev_recommended_backends (void) |
|
|
1434 | { |
|
|
1435 | unsigned int flags = ev_supported_backends (); |
|
|
1436 | |
|
|
1437 | #ifndef __NetBSD__ |
|
|
1438 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1439 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1440 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1441 | #endif |
|
|
1442 | #ifdef __APPLE__ |
|
|
1443 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1444 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1445 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1446 | #endif |
|
|
1447 | |
|
|
1448 | return flags; |
|
|
1449 | } |
|
|
1450 | |
|
|
1451 | unsigned int |
|
|
1452 | ev_embeddable_backends (void) |
|
|
1453 | { |
|
|
1454 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1455 | |
|
|
1456 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1457 | /* please fix it and tell me how to detect the fix */ |
|
|
1458 | flags &= ~EVBACKEND_EPOLL; |
|
|
1459 | |
|
|
1460 | return flags; |
|
|
1461 | } |
|
|
1462 | |
|
|
1463 | unsigned int |
|
|
1464 | ev_backend (EV_P) |
|
|
1465 | { |
|
|
1466 | return backend; |
|
|
1467 | } |
|
|
1468 | |
|
|
1469 | #if EV_MINIMAL < 2 |
|
|
1470 | unsigned int |
|
|
1471 | ev_loop_count (EV_P) |
|
|
1472 | { |
|
|
1473 | return loop_count; |
|
|
1474 | } |
|
|
1475 | |
|
|
1476 | unsigned int |
|
|
1477 | ev_loop_depth (EV_P) |
|
|
1478 | { |
|
|
1479 | return loop_depth; |
|
|
1480 | } |
|
|
1481 | |
|
|
1482 | void |
|
|
1483 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1484 | { |
|
|
1485 | io_blocktime = interval; |
|
|
1486 | } |
|
|
1487 | |
|
|
1488 | void |
|
|
1489 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1490 | { |
|
|
1491 | timeout_blocktime = interval; |
|
|
1492 | } |
|
|
1493 | |
|
|
1494 | void |
|
|
1495 | ev_set_userdata (EV_P_ void *data) |
|
|
1496 | { |
|
|
1497 | userdata = data; |
|
|
1498 | } |
|
|
1499 | |
|
|
1500 | void * |
|
|
1501 | ev_userdata (EV_P) |
|
|
1502 | { |
|
|
1503 | return userdata; |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1507 | { |
|
|
1508 | invoke_cb = invoke_pending_cb; |
|
|
1509 | } |
|
|
1510 | |
|
|
1511 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1512 | { |
|
|
1513 | release_cb = release; |
|
|
1514 | acquire_cb = acquire; |
|
|
1515 | } |
|
|
1516 | #endif |
|
|
1517 | |
|
|
1518 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1519 | static void noinline |
758 | loop_init (EV_P_ unsigned int flags) |
1520 | loop_init (EV_P_ unsigned int flags) |
759 | { |
1521 | { |
760 | if (!method) |
1522 | if (!backend) |
761 | { |
1523 | { |
|
|
1524 | #if EV_USE_REALTIME |
|
|
1525 | if (!have_realtime) |
|
|
1526 | { |
|
|
1527 | struct timespec ts; |
|
|
1528 | |
|
|
1529 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1530 | have_realtime = 1; |
|
|
1531 | } |
|
|
1532 | #endif |
|
|
1533 | |
762 | #if EV_USE_MONOTONIC |
1534 | #if EV_USE_MONOTONIC |
|
|
1535 | if (!have_monotonic) |
763 | { |
1536 | { |
764 | struct timespec ts; |
1537 | struct timespec ts; |
|
|
1538 | |
765 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1539 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
766 | have_monotonic = 1; |
1540 | have_monotonic = 1; |
767 | } |
1541 | } |
768 | #endif |
1542 | #endif |
769 | |
1543 | |
770 | ev_rt_now = ev_time (); |
1544 | /* pid check not overridable via env */ |
771 | mn_now = get_clock (); |
1545 | #ifndef _WIN32 |
772 | now_floor = mn_now; |
1546 | if (flags & EVFLAG_FORKCHECK) |
773 | rtmn_diff = ev_rt_now - mn_now; |
1547 | curpid = getpid (); |
|
|
1548 | #endif |
774 | |
1549 | |
775 | if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) |
1550 | if (!(flags & EVFLAG_NOENV) |
|
|
1551 | && !enable_secure () |
|
|
1552 | && getenv ("LIBEV_FLAGS")) |
776 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1553 | flags = atoi (getenv ("LIBEV_FLAGS")); |
777 | |
1554 | |
|
|
1555 | ev_rt_now = ev_time (); |
|
|
1556 | mn_now = get_clock (); |
|
|
1557 | now_floor = mn_now; |
|
|
1558 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1559 | #if EV_MINIMAL < 2 |
|
|
1560 | invoke_cb = ev_invoke_pending; |
|
|
1561 | #endif |
|
|
1562 | |
|
|
1563 | io_blocktime = 0.; |
|
|
1564 | timeout_blocktime = 0.; |
|
|
1565 | backend = 0; |
|
|
1566 | backend_fd = -1; |
|
|
1567 | sig_pending = 0; |
|
|
1568 | #if EV_ASYNC_ENABLE |
|
|
1569 | async_pending = 0; |
|
|
1570 | #endif |
|
|
1571 | #if EV_USE_INOTIFY |
|
|
1572 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
1573 | #endif |
|
|
1574 | #if EV_USE_SIGNALFD |
|
|
1575 | sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; |
|
|
1576 | #endif |
|
|
1577 | |
778 | if (!(flags & 0x0000ffff)) |
1578 | if (!(flags & 0x0000ffffU)) |
779 | flags |= 0x0000ffff; |
1579 | flags |= ev_recommended_backends (); |
780 | |
1580 | |
781 | method = 0; |
1581 | #if EV_USE_PORT |
|
|
1582 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1583 | #endif |
782 | #if EV_USE_KQUEUE |
1584 | #if EV_USE_KQUEUE |
783 | if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); |
1585 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
784 | #endif |
1586 | #endif |
785 | #if EV_USE_EPOLL |
1587 | #if EV_USE_EPOLL |
786 | if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); |
1588 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
787 | #endif |
1589 | #endif |
788 | #if EV_USE_POLL |
1590 | #if EV_USE_POLL |
789 | if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); |
1591 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
790 | #endif |
1592 | #endif |
791 | #if EV_USE_SELECT |
1593 | #if EV_USE_SELECT |
792 | if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); |
1594 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
793 | #endif |
1595 | #endif |
794 | |
1596 | |
|
|
1597 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1598 | |
795 | ev_init (&sigev, sigcb); |
1599 | ev_init (&pipe_w, pipecb); |
796 | ev_set_priority (&sigev, EV_MAXPRI); |
1600 | ev_set_priority (&pipe_w, EV_MAXPRI); |
797 | } |
1601 | } |
798 | } |
1602 | } |
799 | |
1603 | |
800 | void |
1604 | /* free up a loop structure */ |
|
|
1605 | static void noinline |
801 | loop_destroy (EV_P) |
1606 | loop_destroy (EV_P) |
802 | { |
1607 | { |
803 | int i; |
1608 | int i; |
804 | |
1609 | |
|
|
1610 | if (ev_is_active (&pipe_w)) |
|
|
1611 | { |
|
|
1612 | /*ev_ref (EV_A);*/ |
|
|
1613 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
1614 | |
|
|
1615 | #if EV_USE_EVENTFD |
|
|
1616 | if (evfd >= 0) |
|
|
1617 | close (evfd); |
|
|
1618 | #endif |
|
|
1619 | |
|
|
1620 | if (evpipe [0] >= 0) |
|
|
1621 | { |
|
|
1622 | close (evpipe [0]); |
|
|
1623 | close (evpipe [1]); |
|
|
1624 | } |
|
|
1625 | } |
|
|
1626 | |
|
|
1627 | #if EV_USE_SIGNALFD |
|
|
1628 | if (ev_is_active (&sigfd_w)) |
|
|
1629 | { |
|
|
1630 | /*ev_ref (EV_A);*/ |
|
|
1631 | /*ev_io_stop (EV_A_ &sigfd_w);*/ |
|
|
1632 | |
|
|
1633 | close (sigfd); |
|
|
1634 | } |
|
|
1635 | #endif |
|
|
1636 | |
|
|
1637 | #if EV_USE_INOTIFY |
|
|
1638 | if (fs_fd >= 0) |
|
|
1639 | close (fs_fd); |
|
|
1640 | #endif |
|
|
1641 | |
|
|
1642 | if (backend_fd >= 0) |
|
|
1643 | close (backend_fd); |
|
|
1644 | |
|
|
1645 | #if EV_USE_PORT |
|
|
1646 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1647 | #endif |
805 | #if EV_USE_KQUEUE |
1648 | #if EV_USE_KQUEUE |
806 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
1649 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
807 | #endif |
1650 | #endif |
808 | #if EV_USE_EPOLL |
1651 | #if EV_USE_EPOLL |
809 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
1652 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
810 | #endif |
1653 | #endif |
811 | #if EV_USE_POLL |
1654 | #if EV_USE_POLL |
812 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
1655 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
813 | #endif |
1656 | #endif |
814 | #if EV_USE_SELECT |
1657 | #if EV_USE_SELECT |
815 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
1658 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
816 | #endif |
1659 | #endif |
817 | |
1660 | |
818 | for (i = NUMPRI; i--; ) |
1661 | for (i = NUMPRI; i--; ) |
|
|
1662 | { |
819 | array_free (pending, [i]); |
1663 | array_free (pending, [i]); |
|
|
1664 | #if EV_IDLE_ENABLE |
|
|
1665 | array_free (idle, [i]); |
|
|
1666 | #endif |
|
|
1667 | } |
|
|
1668 | |
|
|
1669 | ev_free (anfds); anfds = 0; anfdmax = 0; |
820 | |
1670 | |
821 | /* have to use the microsoft-never-gets-it-right macro */ |
1671 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1672 | array_free (rfeed, EMPTY); |
822 | array_free (fdchange, EMPTY); |
1673 | array_free (fdchange, EMPTY); |
823 | array_free (timer, EMPTY); |
1674 | array_free (timer, EMPTY); |
824 | #if EV_PERIODICS |
1675 | #if EV_PERIODIC_ENABLE |
825 | array_free (periodic, EMPTY); |
1676 | array_free (periodic, EMPTY); |
826 | #endif |
1677 | #endif |
|
|
1678 | #if EV_FORK_ENABLE |
827 | array_free (idle, EMPTY); |
1679 | array_free (fork, EMPTY); |
|
|
1680 | #endif |
828 | array_free (prepare, EMPTY); |
1681 | array_free (prepare, EMPTY); |
829 | array_free (check, EMPTY); |
1682 | array_free (check, EMPTY); |
|
|
1683 | #if EV_ASYNC_ENABLE |
|
|
1684 | array_free (async, EMPTY); |
|
|
1685 | #endif |
830 | |
1686 | |
831 | method = 0; |
1687 | backend = 0; |
832 | } |
1688 | } |
833 | |
1689 | |
834 | static void |
1690 | #if EV_USE_INOTIFY |
|
|
1691 | inline_size void infy_fork (EV_P); |
|
|
1692 | #endif |
|
|
1693 | |
|
|
1694 | inline_size void |
835 | loop_fork (EV_P) |
1695 | loop_fork (EV_P) |
836 | { |
1696 | { |
|
|
1697 | #if EV_USE_PORT |
|
|
1698 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1699 | #endif |
|
|
1700 | #if EV_USE_KQUEUE |
|
|
1701 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1702 | #endif |
837 | #if EV_USE_EPOLL |
1703 | #if EV_USE_EPOLL |
838 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
1704 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
839 | #endif |
1705 | #endif |
840 | #if EV_USE_KQUEUE |
1706 | #if EV_USE_INOTIFY |
841 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
1707 | infy_fork (EV_A); |
842 | #endif |
1708 | #endif |
843 | |
1709 | |
844 | if (ev_is_active (&sigev)) |
1710 | if (ev_is_active (&pipe_w)) |
845 | { |
1711 | { |
846 | /* default loop */ |
1712 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1713 | /* while we modify the fd vars */ |
|
|
1714 | sig_pending = 1; |
|
|
1715 | #if EV_ASYNC_ENABLE |
|
|
1716 | async_pending = 1; |
|
|
1717 | #endif |
847 | |
1718 | |
848 | ev_ref (EV_A); |
1719 | ev_ref (EV_A); |
849 | ev_io_stop (EV_A_ &sigev); |
1720 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1721 | |
|
|
1722 | #if EV_USE_EVENTFD |
|
|
1723 | if (evfd >= 0) |
|
|
1724 | close (evfd); |
|
|
1725 | #endif |
|
|
1726 | |
|
|
1727 | if (evpipe [0] >= 0) |
|
|
1728 | { |
850 | close (sigpipe [0]); |
1729 | close (evpipe [0]); |
851 | close (sigpipe [1]); |
1730 | close (evpipe [1]); |
|
|
1731 | } |
852 | |
1732 | |
853 | while (pipe (sigpipe)) |
|
|
854 | syserr ("(libev) error creating pipe"); |
|
|
855 | |
|
|
856 | siginit (EV_A); |
1733 | evpipe_init (EV_A); |
|
|
1734 | /* now iterate over everything, in case we missed something */ |
|
|
1735 | pipecb (EV_A_ &pipe_w, EV_READ); |
857 | } |
1736 | } |
858 | |
1737 | |
859 | postfork = 0; |
1738 | postfork = 0; |
860 | } |
1739 | } |
|
|
1740 | |
|
|
1741 | #if EV_MULTIPLICITY |
|
|
1742 | |
|
|
1743 | struct ev_loop * |
|
|
1744 | ev_loop_new (unsigned int flags) |
|
|
1745 | { |
|
|
1746 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1747 | |
|
|
1748 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
1749 | loop_init (EV_A_ flags); |
|
|
1750 | |
|
|
1751 | if (ev_backend (EV_A)) |
|
|
1752 | return EV_A; |
|
|
1753 | |
|
|
1754 | return 0; |
|
|
1755 | } |
|
|
1756 | |
|
|
1757 | void |
|
|
1758 | ev_loop_destroy (EV_P) |
|
|
1759 | { |
|
|
1760 | loop_destroy (EV_A); |
|
|
1761 | ev_free (loop); |
|
|
1762 | } |
|
|
1763 | |
|
|
1764 | void |
|
|
1765 | ev_loop_fork (EV_P) |
|
|
1766 | { |
|
|
1767 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1768 | } |
|
|
1769 | #endif /* multiplicity */ |
|
|
1770 | |
|
|
1771 | #if EV_VERIFY |
|
|
1772 | static void noinline |
|
|
1773 | verify_watcher (EV_P_ W w) |
|
|
1774 | { |
|
|
1775 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1776 | |
|
|
1777 | if (w->pending) |
|
|
1778 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1779 | } |
|
|
1780 | |
|
|
1781 | static void noinline |
|
|
1782 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1783 | { |
|
|
1784 | int i; |
|
|
1785 | |
|
|
1786 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1787 | { |
|
|
1788 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1789 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1790 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1791 | |
|
|
1792 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1793 | } |
|
|
1794 | } |
|
|
1795 | |
|
|
1796 | static void noinline |
|
|
1797 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1798 | { |
|
|
1799 | while (cnt--) |
|
|
1800 | { |
|
|
1801 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1802 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1803 | } |
|
|
1804 | } |
|
|
1805 | #endif |
|
|
1806 | |
|
|
1807 | #if EV_MINIMAL < 2 |
|
|
1808 | void |
|
|
1809 | ev_loop_verify (EV_P) |
|
|
1810 | { |
|
|
1811 | #if EV_VERIFY |
|
|
1812 | int i; |
|
|
1813 | WL w; |
|
|
1814 | |
|
|
1815 | assert (activecnt >= -1); |
|
|
1816 | |
|
|
1817 | assert (fdchangemax >= fdchangecnt); |
|
|
1818 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1819 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1820 | |
|
|
1821 | assert (anfdmax >= 0); |
|
|
1822 | for (i = 0; i < anfdmax; ++i) |
|
|
1823 | for (w = anfds [i].head; w; w = w->next) |
|
|
1824 | { |
|
|
1825 | verify_watcher (EV_A_ (W)w); |
|
|
1826 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
1827 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
1828 | } |
|
|
1829 | |
|
|
1830 | assert (timermax >= timercnt); |
|
|
1831 | verify_heap (EV_A_ timers, timercnt); |
|
|
1832 | |
|
|
1833 | #if EV_PERIODIC_ENABLE |
|
|
1834 | assert (periodicmax >= periodiccnt); |
|
|
1835 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1836 | #endif |
|
|
1837 | |
|
|
1838 | for (i = NUMPRI; i--; ) |
|
|
1839 | { |
|
|
1840 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1841 | #if EV_IDLE_ENABLE |
|
|
1842 | assert (idleall >= 0); |
|
|
1843 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1844 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1845 | #endif |
|
|
1846 | } |
|
|
1847 | |
|
|
1848 | #if EV_FORK_ENABLE |
|
|
1849 | assert (forkmax >= forkcnt); |
|
|
1850 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1851 | #endif |
|
|
1852 | |
|
|
1853 | #if EV_ASYNC_ENABLE |
|
|
1854 | assert (asyncmax >= asynccnt); |
|
|
1855 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1856 | #endif |
|
|
1857 | |
|
|
1858 | assert (preparemax >= preparecnt); |
|
|
1859 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1860 | |
|
|
1861 | assert (checkmax >= checkcnt); |
|
|
1862 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1863 | |
|
|
1864 | # if 0 |
|
|
1865 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1866 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
1867 | # endif |
|
|
1868 | #endif |
|
|
1869 | } |
|
|
1870 | #endif |
861 | |
1871 | |
862 | #if EV_MULTIPLICITY |
1872 | #if EV_MULTIPLICITY |
863 | struct ev_loop * |
1873 | struct ev_loop * |
864 | ev_loop_new (unsigned int flags) |
1874 | ev_default_loop_init (unsigned int flags) |
865 | { |
|
|
866 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
867 | |
|
|
868 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
869 | |
|
|
870 | loop_init (EV_A_ flags); |
|
|
871 | |
|
|
872 | if (ev_method (EV_A)) |
|
|
873 | return loop; |
|
|
874 | |
|
|
875 | return 0; |
|
|
876 | } |
|
|
877 | |
|
|
878 | void |
|
|
879 | ev_loop_destroy (EV_P) |
|
|
880 | { |
|
|
881 | loop_destroy (EV_A); |
|
|
882 | ev_free (loop); |
|
|
883 | } |
|
|
884 | |
|
|
885 | void |
|
|
886 | ev_loop_fork (EV_P) |
|
|
887 | { |
|
|
888 | postfork = 1; |
|
|
889 | } |
|
|
890 | |
|
|
891 | #endif |
|
|
892 | |
|
|
893 | #if EV_MULTIPLICITY |
|
|
894 | struct ev_loop * |
|
|
895 | #else |
1875 | #else |
896 | int |
1876 | int |
897 | #endif |
|
|
898 | ev_default_loop (unsigned int flags) |
1877 | ev_default_loop (unsigned int flags) |
|
|
1878 | #endif |
899 | { |
1879 | { |
900 | if (sigpipe [0] == sigpipe [1]) |
|
|
901 | if (pipe (sigpipe)) |
|
|
902 | return 0; |
|
|
903 | |
|
|
904 | if (!default_loop) |
1880 | if (!ev_default_loop_ptr) |
905 | { |
1881 | { |
906 | #if EV_MULTIPLICITY |
1882 | #if EV_MULTIPLICITY |
907 | struct ev_loop *loop = default_loop = &default_loop_struct; |
1883 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
908 | #else |
1884 | #else |
909 | default_loop = 1; |
1885 | ev_default_loop_ptr = 1; |
910 | #endif |
1886 | #endif |
911 | |
1887 | |
912 | loop_init (EV_A_ flags); |
1888 | loop_init (EV_A_ flags); |
913 | |
1889 | |
914 | if (ev_method (EV_A)) |
1890 | if (ev_backend (EV_A)) |
915 | { |
1891 | { |
916 | siginit (EV_A); |
|
|
917 | |
|
|
918 | #ifndef _WIN32 |
1892 | #ifndef _WIN32 |
919 | ev_signal_init (&childev, childcb, SIGCHLD); |
1893 | ev_signal_init (&childev, childcb, SIGCHLD); |
920 | ev_set_priority (&childev, EV_MAXPRI); |
1894 | ev_set_priority (&childev, EV_MAXPRI); |
921 | ev_signal_start (EV_A_ &childev); |
1895 | ev_signal_start (EV_A_ &childev); |
922 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1896 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
923 | #endif |
1897 | #endif |
924 | } |
1898 | } |
925 | else |
1899 | else |
926 | default_loop = 0; |
1900 | ev_default_loop_ptr = 0; |
927 | } |
1901 | } |
928 | |
1902 | |
929 | return default_loop; |
1903 | return ev_default_loop_ptr; |
930 | } |
1904 | } |
931 | |
1905 | |
932 | void |
1906 | void |
933 | ev_default_destroy (void) |
1907 | ev_default_destroy (void) |
934 | { |
1908 | { |
935 | #if EV_MULTIPLICITY |
1909 | #if EV_MULTIPLICITY |
936 | struct ev_loop *loop = default_loop; |
1910 | EV_P = ev_default_loop_ptr; |
937 | #endif |
1911 | #endif |
|
|
1912 | |
|
|
1913 | ev_default_loop_ptr = 0; |
938 | |
1914 | |
939 | #ifndef _WIN32 |
1915 | #ifndef _WIN32 |
940 | ev_ref (EV_A); /* child watcher */ |
1916 | ev_ref (EV_A); /* child watcher */ |
941 | ev_signal_stop (EV_A_ &childev); |
1917 | ev_signal_stop (EV_A_ &childev); |
942 | #endif |
1918 | #endif |
943 | |
1919 | |
944 | ev_ref (EV_A); /* signal watcher */ |
|
|
945 | ev_io_stop (EV_A_ &sigev); |
|
|
946 | |
|
|
947 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
948 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
949 | |
|
|
950 | loop_destroy (EV_A); |
1920 | loop_destroy (EV_A); |
951 | } |
1921 | } |
952 | |
1922 | |
953 | void |
1923 | void |
954 | ev_default_fork (void) |
1924 | ev_default_fork (void) |
955 | { |
1925 | { |
956 | #if EV_MULTIPLICITY |
1926 | #if EV_MULTIPLICITY |
957 | struct ev_loop *loop = default_loop; |
1927 | EV_P = ev_default_loop_ptr; |
958 | #endif |
1928 | #endif |
959 | |
1929 | |
960 | if (method) |
1930 | postfork = 1; /* must be in line with ev_loop_fork */ |
961 | postfork = 1; |
|
|
962 | } |
1931 | } |
963 | |
1932 | |
964 | /*****************************************************************************/ |
1933 | /*****************************************************************************/ |
965 | |
1934 | |
966 | static int |
1935 | void |
967 | any_pending (EV_P) |
1936 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1937 | { |
|
|
1938 | EV_CB_INVOKE ((W)w, revents); |
|
|
1939 | } |
|
|
1940 | |
|
|
1941 | unsigned int |
|
|
1942 | ev_pending_count (EV_P) |
968 | { |
1943 | { |
969 | int pri; |
1944 | int pri; |
|
|
1945 | unsigned int count = 0; |
970 | |
1946 | |
971 | for (pri = NUMPRI; pri--; ) |
1947 | for (pri = NUMPRI; pri--; ) |
972 | if (pendingcnt [pri]) |
1948 | count += pendingcnt [pri]; |
973 | return 1; |
|
|
974 | |
1949 | |
975 | return 0; |
1950 | return count; |
976 | } |
1951 | } |
977 | |
1952 | |
978 | static void |
1953 | void noinline |
979 | call_pending (EV_P) |
1954 | ev_invoke_pending (EV_P) |
980 | { |
1955 | { |
981 | int pri; |
1956 | int pri; |
982 | |
1957 | |
983 | for (pri = NUMPRI; pri--; ) |
1958 | for (pri = NUMPRI; pri--; ) |
984 | while (pendingcnt [pri]) |
1959 | while (pendingcnt [pri]) |
985 | { |
1960 | { |
986 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1961 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
987 | |
1962 | |
988 | if (p->w) |
1963 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
989 | { |
1964 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
1965 | |
990 | p->w->pending = 0; |
1966 | p->w->pending = 0; |
991 | EV_CB_INVOKE (p->w, p->events); |
1967 | EV_CB_INVOKE (p->w, p->events); |
992 | } |
1968 | EV_FREQUENT_CHECK; |
993 | } |
1969 | } |
994 | } |
1970 | } |
995 | |
1971 | |
996 | static void |
1972 | #if EV_IDLE_ENABLE |
|
|
1973 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
1974 | /* only when higher priorities are idle" logic */ |
|
|
1975 | inline_size void |
|
|
1976 | idle_reify (EV_P) |
|
|
1977 | { |
|
|
1978 | if (expect_false (idleall)) |
|
|
1979 | { |
|
|
1980 | int pri; |
|
|
1981 | |
|
|
1982 | for (pri = NUMPRI; pri--; ) |
|
|
1983 | { |
|
|
1984 | if (pendingcnt [pri]) |
|
|
1985 | break; |
|
|
1986 | |
|
|
1987 | if (idlecnt [pri]) |
|
|
1988 | { |
|
|
1989 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1990 | break; |
|
|
1991 | } |
|
|
1992 | } |
|
|
1993 | } |
|
|
1994 | } |
|
|
1995 | #endif |
|
|
1996 | |
|
|
1997 | /* make timers pending */ |
|
|
1998 | inline_size void |
997 | timers_reify (EV_P) |
1999 | timers_reify (EV_P) |
998 | { |
2000 | { |
|
|
2001 | EV_FREQUENT_CHECK; |
|
|
2002 | |
999 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
2003 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
1000 | { |
2004 | { |
1001 | struct ev_timer *w = timers [0]; |
2005 | do |
1002 | |
|
|
1003 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
1004 | |
|
|
1005 | /* first reschedule or stop timer */ |
|
|
1006 | if (w->repeat) |
|
|
1007 | { |
2006 | { |
|
|
2007 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2008 | |
|
|
2009 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2010 | |
|
|
2011 | /* first reschedule or stop timer */ |
|
|
2012 | if (w->repeat) |
|
|
2013 | { |
|
|
2014 | ev_at (w) += w->repeat; |
|
|
2015 | if (ev_at (w) < mn_now) |
|
|
2016 | ev_at (w) = mn_now; |
|
|
2017 | |
1008 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2018 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1009 | |
2019 | |
1010 | ((WT)w)->at += w->repeat; |
2020 | ANHE_at_cache (timers [HEAP0]); |
1011 | if (((WT)w)->at < mn_now) |
|
|
1012 | ((WT)w)->at = mn_now; |
|
|
1013 | |
|
|
1014 | downheap ((WT *)timers, timercnt, 0); |
2021 | downheap (timers, timercnt, HEAP0); |
|
|
2022 | } |
|
|
2023 | else |
|
|
2024 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2025 | |
|
|
2026 | EV_FREQUENT_CHECK; |
|
|
2027 | feed_reverse (EV_A_ (W)w); |
1015 | } |
2028 | } |
1016 | else |
2029 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
1017 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1018 | |
2030 | |
1019 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
2031 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
1020 | } |
2032 | } |
1021 | } |
2033 | } |
1022 | |
2034 | |
1023 | #if EV_PERIODICS |
2035 | #if EV_PERIODIC_ENABLE |
1024 | static void |
2036 | /* make periodics pending */ |
|
|
2037 | inline_size void |
1025 | periodics_reify (EV_P) |
2038 | periodics_reify (EV_P) |
1026 | { |
2039 | { |
|
|
2040 | EV_FREQUENT_CHECK; |
|
|
2041 | |
1027 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
2042 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1028 | { |
2043 | { |
1029 | struct ev_periodic *w = periodics [0]; |
2044 | int feed_count = 0; |
1030 | |
2045 | |
|
|
2046 | do |
|
|
2047 | { |
|
|
2048 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2049 | |
1031 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
2050 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1032 | |
2051 | |
1033 | /* first reschedule or stop timer */ |
2052 | /* first reschedule or stop timer */ |
|
|
2053 | if (w->reschedule_cb) |
|
|
2054 | { |
|
|
2055 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2056 | |
|
|
2057 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2058 | |
|
|
2059 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2060 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2061 | } |
|
|
2062 | else if (w->interval) |
|
|
2063 | { |
|
|
2064 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2065 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2066 | /* this might happen because of floating point inexactness */ |
|
|
2067 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2068 | { |
|
|
2069 | ev_at (w) += w->interval; |
|
|
2070 | |
|
|
2071 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2072 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2073 | /* has effectively asked to get triggered more often than possible */ |
|
|
2074 | if (ev_at (w) < ev_rt_now) |
|
|
2075 | ev_at (w) = ev_rt_now; |
|
|
2076 | } |
|
|
2077 | |
|
|
2078 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2079 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2080 | } |
|
|
2081 | else |
|
|
2082 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2083 | |
|
|
2084 | EV_FREQUENT_CHECK; |
|
|
2085 | feed_reverse (EV_A_ (W)w); |
|
|
2086 | } |
|
|
2087 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2088 | |
|
|
2089 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2090 | } |
|
|
2091 | } |
|
|
2092 | |
|
|
2093 | /* simply recalculate all periodics */ |
|
|
2094 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
|
|
2095 | static void noinline |
|
|
2096 | periodics_reschedule (EV_P) |
|
|
2097 | { |
|
|
2098 | int i; |
|
|
2099 | |
|
|
2100 | /* adjust periodics after time jump */ |
|
|
2101 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2102 | { |
|
|
2103 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2104 | |
1034 | if (w->reschedule_cb) |
2105 | if (w->reschedule_cb) |
|
|
2106 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2107 | else if (w->interval) |
|
|
2108 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2109 | |
|
|
2110 | ANHE_at_cache (periodics [i]); |
|
|
2111 | } |
|
|
2112 | |
|
|
2113 | reheap (periodics, periodiccnt); |
|
|
2114 | } |
|
|
2115 | #endif |
|
|
2116 | |
|
|
2117 | /* adjust all timers by a given offset */ |
|
|
2118 | static void noinline |
|
|
2119 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2120 | { |
|
|
2121 | int i; |
|
|
2122 | |
|
|
2123 | for (i = 0; i < timercnt; ++i) |
|
|
2124 | { |
|
|
2125 | ANHE *he = timers + i + HEAP0; |
|
|
2126 | ANHE_w (*he)->at += adjust; |
|
|
2127 | ANHE_at_cache (*he); |
|
|
2128 | } |
|
|
2129 | } |
|
|
2130 | |
|
|
2131 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2132 | /* also detetc if there was a timejump, and act accordingly */ |
|
|
2133 | inline_speed void |
|
|
2134 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2135 | { |
|
|
2136 | #if EV_USE_MONOTONIC |
|
|
2137 | if (expect_true (have_monotonic)) |
|
|
2138 | { |
|
|
2139 | int i; |
|
|
2140 | ev_tstamp odiff = rtmn_diff; |
|
|
2141 | |
|
|
2142 | mn_now = get_clock (); |
|
|
2143 | |
|
|
2144 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2145 | /* interpolate in the meantime */ |
|
|
2146 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1035 | { |
2147 | { |
1036 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
2148 | ev_rt_now = rtmn_diff + mn_now; |
1037 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
2149 | return; |
1038 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1039 | } |
2150 | } |
1040 | else if (w->interval) |
|
|
1041 | { |
|
|
1042 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1043 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1044 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1045 | } |
|
|
1046 | else |
|
|
1047 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1048 | |
2151 | |
1049 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1050 | } |
|
|
1051 | } |
|
|
1052 | |
|
|
1053 | static void |
|
|
1054 | periodics_reschedule (EV_P) |
|
|
1055 | { |
|
|
1056 | int i; |
|
|
1057 | |
|
|
1058 | /* adjust periodics after time jump */ |
|
|
1059 | for (i = 0; i < periodiccnt; ++i) |
|
|
1060 | { |
|
|
1061 | struct ev_periodic *w = periodics [i]; |
|
|
1062 | |
|
|
1063 | if (w->reschedule_cb) |
|
|
1064 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1065 | else if (w->interval) |
|
|
1066 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1067 | } |
|
|
1068 | |
|
|
1069 | /* now rebuild the heap */ |
|
|
1070 | for (i = periodiccnt >> 1; i--; ) |
|
|
1071 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1072 | } |
|
|
1073 | #endif |
|
|
1074 | |
|
|
1075 | inline int |
|
|
1076 | time_update_monotonic (EV_P) |
|
|
1077 | { |
|
|
1078 | mn_now = get_clock (); |
|
|
1079 | |
|
|
1080 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1081 | { |
|
|
1082 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1083 | return 0; |
|
|
1084 | } |
|
|
1085 | else |
|
|
1086 | { |
|
|
1087 | now_floor = mn_now; |
2152 | now_floor = mn_now; |
1088 | ev_rt_now = ev_time (); |
2153 | ev_rt_now = ev_time (); |
1089 | return 1; |
|
|
1090 | } |
|
|
1091 | } |
|
|
1092 | |
2154 | |
1093 | static void |
2155 | /* loop a few times, before making important decisions. |
1094 | time_update (EV_P) |
2156 | * on the choice of "4": one iteration isn't enough, |
1095 | { |
2157 | * in case we get preempted during the calls to |
1096 | int i; |
2158 | * ev_time and get_clock. a second call is almost guaranteed |
1097 | |
2159 | * to succeed in that case, though. and looping a few more times |
1098 | #if EV_USE_MONOTONIC |
2160 | * doesn't hurt either as we only do this on time-jumps or |
1099 | if (expect_true (have_monotonic)) |
2161 | * in the unlikely event of having been preempted here. |
1100 | { |
2162 | */ |
1101 | if (time_update_monotonic (EV_A)) |
2163 | for (i = 4; --i; ) |
1102 | { |
2164 | { |
1103 | ev_tstamp odiff = rtmn_diff; |
|
|
1104 | |
|
|
1105 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1106 | { |
|
|
1107 | rtmn_diff = ev_rt_now - mn_now; |
2165 | rtmn_diff = ev_rt_now - mn_now; |
1108 | |
2166 | |
1109 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
2167 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1110 | return; /* all is well */ |
2168 | return; /* all is well */ |
1111 | |
2169 | |
1112 | ev_rt_now = ev_time (); |
2170 | ev_rt_now = ev_time (); |
1113 | mn_now = get_clock (); |
2171 | mn_now = get_clock (); |
1114 | now_floor = mn_now; |
2172 | now_floor = mn_now; |
1115 | } |
2173 | } |
1116 | |
2174 | |
|
|
2175 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2176 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1117 | # if EV_PERIODICS |
2177 | # if EV_PERIODIC_ENABLE |
|
|
2178 | periodics_reschedule (EV_A); |
|
|
2179 | # endif |
|
|
2180 | } |
|
|
2181 | else |
|
|
2182 | #endif |
|
|
2183 | { |
|
|
2184 | ev_rt_now = ev_time (); |
|
|
2185 | |
|
|
2186 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
2187 | { |
|
|
2188 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
2189 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
2190 | #if EV_PERIODIC_ENABLE |
1118 | periodics_reschedule (EV_A); |
2191 | periodics_reschedule (EV_A); |
1119 | # endif |
2192 | #endif |
1120 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1121 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1122 | } |
2193 | } |
1123 | } |
|
|
1124 | else |
|
|
1125 | #endif |
|
|
1126 | { |
|
|
1127 | ev_rt_now = ev_time (); |
|
|
1128 | |
|
|
1129 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1130 | { |
|
|
1131 | #if EV_PERIODICS |
|
|
1132 | periodics_reschedule (EV_A); |
|
|
1133 | #endif |
|
|
1134 | |
|
|
1135 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1136 | for (i = 0; i < timercnt; ++i) |
|
|
1137 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1138 | } |
|
|
1139 | |
2194 | |
1140 | mn_now = ev_rt_now; |
2195 | mn_now = ev_rt_now; |
1141 | } |
2196 | } |
1142 | } |
2197 | } |
1143 | |
2198 | |
1144 | void |
2199 | void |
1145 | ev_ref (EV_P) |
|
|
1146 | { |
|
|
1147 | ++activecnt; |
|
|
1148 | } |
|
|
1149 | |
|
|
1150 | void |
|
|
1151 | ev_unref (EV_P) |
|
|
1152 | { |
|
|
1153 | --activecnt; |
|
|
1154 | } |
|
|
1155 | |
|
|
1156 | static int loop_done; |
|
|
1157 | |
|
|
1158 | void |
|
|
1159 | ev_loop (EV_P_ int flags) |
2200 | ev_loop (EV_P_ int flags) |
1160 | { |
2201 | { |
1161 | double block; |
2202 | #if EV_MINIMAL < 2 |
1162 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
2203 | ++loop_depth; |
|
|
2204 | #endif |
|
|
2205 | |
|
|
2206 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
|
|
2207 | |
|
|
2208 | loop_done = EVUNLOOP_CANCEL; |
|
|
2209 | |
|
|
2210 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
1163 | |
2211 | |
1164 | do |
2212 | do |
1165 | { |
2213 | { |
|
|
2214 | #if EV_VERIFY >= 2 |
|
|
2215 | ev_loop_verify (EV_A); |
|
|
2216 | #endif |
|
|
2217 | |
|
|
2218 | #ifndef _WIN32 |
|
|
2219 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2220 | if (expect_false (getpid () != curpid)) |
|
|
2221 | { |
|
|
2222 | curpid = getpid (); |
|
|
2223 | postfork = 1; |
|
|
2224 | } |
|
|
2225 | #endif |
|
|
2226 | |
|
|
2227 | #if EV_FORK_ENABLE |
|
|
2228 | /* we might have forked, so queue fork handlers */ |
|
|
2229 | if (expect_false (postfork)) |
|
|
2230 | if (forkcnt) |
|
|
2231 | { |
|
|
2232 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2233 | EV_INVOKE_PENDING; |
|
|
2234 | } |
|
|
2235 | #endif |
|
|
2236 | |
1166 | /* queue check watchers (and execute them) */ |
2237 | /* queue prepare watchers (and execute them) */ |
1167 | if (expect_false (preparecnt)) |
2238 | if (expect_false (preparecnt)) |
1168 | { |
2239 | { |
1169 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2240 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1170 | call_pending (EV_A); |
2241 | EV_INVOKE_PENDING; |
1171 | } |
2242 | } |
|
|
2243 | |
|
|
2244 | if (expect_false (loop_done)) |
|
|
2245 | break; |
1172 | |
2246 | |
1173 | /* we might have forked, so reify kernel state if necessary */ |
2247 | /* we might have forked, so reify kernel state if necessary */ |
1174 | if (expect_false (postfork)) |
2248 | if (expect_false (postfork)) |
1175 | loop_fork (EV_A); |
2249 | loop_fork (EV_A); |
1176 | |
2250 | |
1177 | /* update fd-related kernel structures */ |
2251 | /* update fd-related kernel structures */ |
1178 | fd_reify (EV_A); |
2252 | fd_reify (EV_A); |
1179 | |
2253 | |
1180 | /* calculate blocking time */ |
2254 | /* calculate blocking time */ |
|
|
2255 | { |
|
|
2256 | ev_tstamp waittime = 0.; |
|
|
2257 | ev_tstamp sleeptime = 0.; |
1181 | |
2258 | |
1182 | /* we only need this for !monotonic clock or timers, but as we basically |
2259 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1183 | always have timers, we just calculate it always */ |
|
|
1184 | #if EV_USE_MONOTONIC |
|
|
1185 | if (expect_true (have_monotonic)) |
|
|
1186 | time_update_monotonic (EV_A); |
|
|
1187 | else |
|
|
1188 | #endif |
|
|
1189 | { |
2260 | { |
1190 | ev_rt_now = ev_time (); |
2261 | /* remember old timestamp for io_blocktime calculation */ |
1191 | mn_now = ev_rt_now; |
2262 | ev_tstamp prev_mn_now = mn_now; |
1192 | } |
|
|
1193 | |
2263 | |
1194 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
2264 | /* update time to cancel out callback processing overhead */ |
1195 | block = 0.; |
2265 | time_update (EV_A_ 1e100); |
1196 | else |
2266 | |
1197 | { |
|
|
1198 | block = MAX_BLOCKTIME; |
2267 | waittime = MAX_BLOCKTIME; |
1199 | |
2268 | |
1200 | if (timercnt) |
2269 | if (timercnt) |
1201 | { |
2270 | { |
1202 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
2271 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1203 | if (block > to) block = to; |
2272 | if (waittime > to) waittime = to; |
1204 | } |
2273 | } |
1205 | |
2274 | |
1206 | #if EV_PERIODICS |
2275 | #if EV_PERIODIC_ENABLE |
1207 | if (periodiccnt) |
2276 | if (periodiccnt) |
1208 | { |
2277 | { |
1209 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
2278 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1210 | if (block > to) block = to; |
2279 | if (waittime > to) waittime = to; |
1211 | } |
2280 | } |
1212 | #endif |
2281 | #endif |
1213 | |
2282 | |
1214 | if (block < 0.) block = 0.; |
2283 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2284 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2285 | waittime = timeout_blocktime; |
|
|
2286 | |
|
|
2287 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2288 | if (expect_false (io_blocktime)) |
|
|
2289 | { |
|
|
2290 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2291 | |
|
|
2292 | if (sleeptime > waittime - backend_fudge) |
|
|
2293 | sleeptime = waittime - backend_fudge; |
|
|
2294 | |
|
|
2295 | if (expect_true (sleeptime > 0.)) |
|
|
2296 | { |
|
|
2297 | ev_sleep (sleeptime); |
|
|
2298 | waittime -= sleeptime; |
|
|
2299 | } |
|
|
2300 | } |
1215 | } |
2301 | } |
1216 | |
2302 | |
1217 | method_poll (EV_A_ block); |
2303 | #if EV_MINIMAL < 2 |
|
|
2304 | ++loop_count; |
|
|
2305 | #endif |
|
|
2306 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
|
|
2307 | backend_poll (EV_A_ waittime); |
|
|
2308 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
1218 | |
2309 | |
1219 | /* update ev_rt_now, do magic */ |
2310 | /* update ev_rt_now, do magic */ |
1220 | time_update (EV_A); |
2311 | time_update (EV_A_ waittime + sleeptime); |
|
|
2312 | } |
1221 | |
2313 | |
1222 | /* queue pending timers and reschedule them */ |
2314 | /* queue pending timers and reschedule them */ |
1223 | timers_reify (EV_A); /* relative timers called last */ |
2315 | timers_reify (EV_A); /* relative timers called last */ |
1224 | #if EV_PERIODICS |
2316 | #if EV_PERIODIC_ENABLE |
1225 | periodics_reify (EV_A); /* absolute timers called first */ |
2317 | periodics_reify (EV_A); /* absolute timers called first */ |
1226 | #endif |
2318 | #endif |
1227 | |
2319 | |
|
|
2320 | #if EV_IDLE_ENABLE |
1228 | /* queue idle watchers unless io or timers are pending */ |
2321 | /* queue idle watchers unless other events are pending */ |
1229 | if (idlecnt && !any_pending (EV_A)) |
2322 | idle_reify (EV_A); |
1230 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
2323 | #endif |
1231 | |
2324 | |
1232 | /* queue check watchers, to be executed first */ |
2325 | /* queue check watchers, to be executed first */ |
1233 | if (checkcnt) |
2326 | if (expect_false (checkcnt)) |
1234 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2327 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1235 | |
2328 | |
1236 | call_pending (EV_A); |
2329 | EV_INVOKE_PENDING; |
1237 | } |
2330 | } |
1238 | while (activecnt && !loop_done); |
2331 | while (expect_true ( |
|
|
2332 | activecnt |
|
|
2333 | && !loop_done |
|
|
2334 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2335 | )); |
1239 | |
2336 | |
1240 | if (loop_done != 2) |
2337 | if (loop_done == EVUNLOOP_ONE) |
1241 | loop_done = 0; |
2338 | loop_done = EVUNLOOP_CANCEL; |
|
|
2339 | |
|
|
2340 | #if EV_MINIMAL < 2 |
|
|
2341 | --loop_depth; |
|
|
2342 | #endif |
1242 | } |
2343 | } |
1243 | |
2344 | |
1244 | void |
2345 | void |
1245 | ev_unloop (EV_P_ int how) |
2346 | ev_unloop (EV_P_ int how) |
1246 | { |
2347 | { |
1247 | loop_done = how; |
2348 | loop_done = how; |
1248 | } |
2349 | } |
1249 | |
2350 | |
|
|
2351 | void |
|
|
2352 | ev_ref (EV_P) |
|
|
2353 | { |
|
|
2354 | ++activecnt; |
|
|
2355 | } |
|
|
2356 | |
|
|
2357 | void |
|
|
2358 | ev_unref (EV_P) |
|
|
2359 | { |
|
|
2360 | --activecnt; |
|
|
2361 | } |
|
|
2362 | |
|
|
2363 | void |
|
|
2364 | ev_now_update (EV_P) |
|
|
2365 | { |
|
|
2366 | time_update (EV_A_ 1e100); |
|
|
2367 | } |
|
|
2368 | |
|
|
2369 | void |
|
|
2370 | ev_suspend (EV_P) |
|
|
2371 | { |
|
|
2372 | ev_now_update (EV_A); |
|
|
2373 | } |
|
|
2374 | |
|
|
2375 | void |
|
|
2376 | ev_resume (EV_P) |
|
|
2377 | { |
|
|
2378 | ev_tstamp mn_prev = mn_now; |
|
|
2379 | |
|
|
2380 | ev_now_update (EV_A); |
|
|
2381 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2382 | #if EV_PERIODIC_ENABLE |
|
|
2383 | /* TODO: really do this? */ |
|
|
2384 | periodics_reschedule (EV_A); |
|
|
2385 | #endif |
|
|
2386 | } |
|
|
2387 | |
1250 | /*****************************************************************************/ |
2388 | /*****************************************************************************/ |
|
|
2389 | /* singly-linked list management, used when the expected list length is short */ |
1251 | |
2390 | |
1252 | inline void |
2391 | inline_size void |
1253 | wlist_add (WL *head, WL elem) |
2392 | wlist_add (WL *head, WL elem) |
1254 | { |
2393 | { |
1255 | elem->next = *head; |
2394 | elem->next = *head; |
1256 | *head = elem; |
2395 | *head = elem; |
1257 | } |
2396 | } |
1258 | |
2397 | |
1259 | inline void |
2398 | inline_size void |
1260 | wlist_del (WL *head, WL elem) |
2399 | wlist_del (WL *head, WL elem) |
1261 | { |
2400 | { |
1262 | while (*head) |
2401 | while (*head) |
1263 | { |
2402 | { |
1264 | if (*head == elem) |
2403 | if (expect_true (*head == elem)) |
1265 | { |
2404 | { |
1266 | *head = elem->next; |
2405 | *head = elem->next; |
1267 | return; |
2406 | break; |
1268 | } |
2407 | } |
1269 | |
2408 | |
1270 | head = &(*head)->next; |
2409 | head = &(*head)->next; |
1271 | } |
2410 | } |
1272 | } |
2411 | } |
1273 | |
2412 | |
|
|
2413 | /* internal, faster, version of ev_clear_pending */ |
1274 | inline void |
2414 | inline_speed void |
1275 | ev_clear_pending (EV_P_ W w) |
2415 | clear_pending (EV_P_ W w) |
1276 | { |
2416 | { |
1277 | if (w->pending) |
2417 | if (w->pending) |
1278 | { |
2418 | { |
1279 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
2419 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1280 | w->pending = 0; |
2420 | w->pending = 0; |
1281 | } |
2421 | } |
1282 | } |
2422 | } |
1283 | |
2423 | |
|
|
2424 | int |
|
|
2425 | ev_clear_pending (EV_P_ void *w) |
|
|
2426 | { |
|
|
2427 | W w_ = (W)w; |
|
|
2428 | int pending = w_->pending; |
|
|
2429 | |
|
|
2430 | if (expect_true (pending)) |
|
|
2431 | { |
|
|
2432 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2433 | p->w = (W)&pending_w; |
|
|
2434 | w_->pending = 0; |
|
|
2435 | return p->events; |
|
|
2436 | } |
|
|
2437 | else |
|
|
2438 | return 0; |
|
|
2439 | } |
|
|
2440 | |
1284 | inline void |
2441 | inline_size void |
|
|
2442 | pri_adjust (EV_P_ W w) |
|
|
2443 | { |
|
|
2444 | int pri = ev_priority (w); |
|
|
2445 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2446 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2447 | ev_set_priority (w, pri); |
|
|
2448 | } |
|
|
2449 | |
|
|
2450 | inline_speed void |
1285 | ev_start (EV_P_ W w, int active) |
2451 | ev_start (EV_P_ W w, int active) |
1286 | { |
2452 | { |
1287 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
2453 | pri_adjust (EV_A_ w); |
1288 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1289 | |
|
|
1290 | w->active = active; |
2454 | w->active = active; |
1291 | ev_ref (EV_A); |
2455 | ev_ref (EV_A); |
1292 | } |
2456 | } |
1293 | |
2457 | |
1294 | inline void |
2458 | inline_size void |
1295 | ev_stop (EV_P_ W w) |
2459 | ev_stop (EV_P_ W w) |
1296 | { |
2460 | { |
1297 | ev_unref (EV_A); |
2461 | ev_unref (EV_A); |
1298 | w->active = 0; |
2462 | w->active = 0; |
1299 | } |
2463 | } |
1300 | |
2464 | |
1301 | /*****************************************************************************/ |
2465 | /*****************************************************************************/ |
1302 | |
2466 | |
1303 | void |
2467 | void noinline |
1304 | ev_io_start (EV_P_ struct ev_io *w) |
2468 | ev_io_start (EV_P_ ev_io *w) |
1305 | { |
2469 | { |
1306 | int fd = w->fd; |
2470 | int fd = w->fd; |
1307 | |
2471 | |
1308 | if (ev_is_active (w)) |
2472 | if (expect_false (ev_is_active (w))) |
1309 | return; |
2473 | return; |
1310 | |
2474 | |
1311 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2475 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2476 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2477 | |
|
|
2478 | EV_FREQUENT_CHECK; |
1312 | |
2479 | |
1313 | ev_start (EV_A_ (W)w, 1); |
2480 | ev_start (EV_A_ (W)w, 1); |
1314 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
2481 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1315 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2482 | wlist_add (&anfds[fd].head, (WL)w); |
1316 | |
2483 | |
1317 | fd_change (EV_A_ fd); |
2484 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
1318 | } |
2485 | w->events &= ~EV__IOFDSET; |
1319 | |
2486 | |
1320 | void |
2487 | EV_FREQUENT_CHECK; |
|
|
2488 | } |
|
|
2489 | |
|
|
2490 | void noinline |
1321 | ev_io_stop (EV_P_ struct ev_io *w) |
2491 | ev_io_stop (EV_P_ ev_io *w) |
1322 | { |
2492 | { |
1323 | ev_clear_pending (EV_A_ (W)w); |
2493 | clear_pending (EV_A_ (W)w); |
1324 | if (!ev_is_active (w)) |
2494 | if (expect_false (!ev_is_active (w))) |
1325 | return; |
2495 | return; |
1326 | |
2496 | |
1327 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2497 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1328 | |
2498 | |
|
|
2499 | EV_FREQUENT_CHECK; |
|
|
2500 | |
1329 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2501 | wlist_del (&anfds[w->fd].head, (WL)w); |
1330 | ev_stop (EV_A_ (W)w); |
2502 | ev_stop (EV_A_ (W)w); |
1331 | |
2503 | |
1332 | fd_change (EV_A_ w->fd); |
2504 | fd_change (EV_A_ w->fd, 1); |
1333 | } |
|
|
1334 | |
2505 | |
1335 | void |
2506 | EV_FREQUENT_CHECK; |
|
|
2507 | } |
|
|
2508 | |
|
|
2509 | void noinline |
1336 | ev_timer_start (EV_P_ struct ev_timer *w) |
2510 | ev_timer_start (EV_P_ ev_timer *w) |
1337 | { |
2511 | { |
1338 | if (ev_is_active (w)) |
2512 | if (expect_false (ev_is_active (w))) |
1339 | return; |
2513 | return; |
1340 | |
2514 | |
1341 | ((WT)w)->at += mn_now; |
2515 | ev_at (w) += mn_now; |
1342 | |
2516 | |
1343 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2517 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1344 | |
2518 | |
|
|
2519 | EV_FREQUENT_CHECK; |
|
|
2520 | |
|
|
2521 | ++timercnt; |
1345 | ev_start (EV_A_ (W)w, ++timercnt); |
2522 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1346 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
2523 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1347 | timers [timercnt - 1] = w; |
2524 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1348 | upheap ((WT *)timers, timercnt - 1); |
2525 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2526 | upheap (timers, ev_active (w)); |
1349 | |
2527 | |
|
|
2528 | EV_FREQUENT_CHECK; |
|
|
2529 | |
1350 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2530 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1351 | } |
2531 | } |
1352 | |
2532 | |
1353 | void |
2533 | void noinline |
1354 | ev_timer_stop (EV_P_ struct ev_timer *w) |
2534 | ev_timer_stop (EV_P_ ev_timer *w) |
1355 | { |
2535 | { |
1356 | ev_clear_pending (EV_A_ (W)w); |
2536 | clear_pending (EV_A_ (W)w); |
1357 | if (!ev_is_active (w)) |
2537 | if (expect_false (!ev_is_active (w))) |
1358 | return; |
2538 | return; |
1359 | |
2539 | |
|
|
2540 | EV_FREQUENT_CHECK; |
|
|
2541 | |
|
|
2542 | { |
|
|
2543 | int active = ev_active (w); |
|
|
2544 | |
1360 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2545 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
1361 | |
2546 | |
1362 | if (((W)w)->active < timercnt--) |
2547 | --timercnt; |
|
|
2548 | |
|
|
2549 | if (expect_true (active < timercnt + HEAP0)) |
1363 | { |
2550 | { |
1364 | timers [((W)w)->active - 1] = timers [timercnt]; |
2551 | timers [active] = timers [timercnt + HEAP0]; |
1365 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2552 | adjustheap (timers, timercnt, active); |
1366 | } |
2553 | } |
|
|
2554 | } |
1367 | |
2555 | |
1368 | ((WT)w)->at -= mn_now; |
2556 | EV_FREQUENT_CHECK; |
|
|
2557 | |
|
|
2558 | ev_at (w) -= mn_now; |
1369 | |
2559 | |
1370 | ev_stop (EV_A_ (W)w); |
2560 | ev_stop (EV_A_ (W)w); |
1371 | } |
2561 | } |
1372 | |
2562 | |
1373 | void |
2563 | void noinline |
1374 | ev_timer_again (EV_P_ struct ev_timer *w) |
2564 | ev_timer_again (EV_P_ ev_timer *w) |
1375 | { |
2565 | { |
|
|
2566 | EV_FREQUENT_CHECK; |
|
|
2567 | |
1376 | if (ev_is_active (w)) |
2568 | if (ev_is_active (w)) |
1377 | { |
2569 | { |
1378 | if (w->repeat) |
2570 | if (w->repeat) |
1379 | { |
2571 | { |
1380 | ((WT)w)->at = mn_now + w->repeat; |
2572 | ev_at (w) = mn_now + w->repeat; |
|
|
2573 | ANHE_at_cache (timers [ev_active (w)]); |
1381 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2574 | adjustheap (timers, timercnt, ev_active (w)); |
1382 | } |
2575 | } |
1383 | else |
2576 | else |
1384 | ev_timer_stop (EV_A_ w); |
2577 | ev_timer_stop (EV_A_ w); |
1385 | } |
2578 | } |
1386 | else if (w->repeat) |
2579 | else if (w->repeat) |
1387 | { |
2580 | { |
1388 | w->at = w->repeat; |
2581 | ev_at (w) = w->repeat; |
1389 | ev_timer_start (EV_A_ w); |
2582 | ev_timer_start (EV_A_ w); |
1390 | } |
2583 | } |
1391 | } |
|
|
1392 | |
2584 | |
|
|
2585 | EV_FREQUENT_CHECK; |
|
|
2586 | } |
|
|
2587 | |
|
|
2588 | ev_tstamp |
|
|
2589 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2590 | { |
|
|
2591 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2592 | } |
|
|
2593 | |
1393 | #if EV_PERIODICS |
2594 | #if EV_PERIODIC_ENABLE |
1394 | void |
2595 | void noinline |
1395 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2596 | ev_periodic_start (EV_P_ ev_periodic *w) |
1396 | { |
2597 | { |
1397 | if (ev_is_active (w)) |
2598 | if (expect_false (ev_is_active (w))) |
1398 | return; |
2599 | return; |
1399 | |
2600 | |
1400 | if (w->reschedule_cb) |
2601 | if (w->reschedule_cb) |
1401 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2602 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1402 | else if (w->interval) |
2603 | else if (w->interval) |
1403 | { |
2604 | { |
1404 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2605 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1405 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2606 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1406 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2607 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1407 | } |
2608 | } |
|
|
2609 | else |
|
|
2610 | ev_at (w) = w->offset; |
1408 | |
2611 | |
|
|
2612 | EV_FREQUENT_CHECK; |
|
|
2613 | |
|
|
2614 | ++periodiccnt; |
1409 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2615 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1410 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
2616 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1411 | periodics [periodiccnt - 1] = w; |
2617 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1412 | upheap ((WT *)periodics, periodiccnt - 1); |
2618 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2619 | upheap (periodics, ev_active (w)); |
1413 | |
2620 | |
|
|
2621 | EV_FREQUENT_CHECK; |
|
|
2622 | |
1414 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2623 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1415 | } |
2624 | } |
1416 | |
2625 | |
1417 | void |
2626 | void noinline |
1418 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2627 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1419 | { |
2628 | { |
1420 | ev_clear_pending (EV_A_ (W)w); |
2629 | clear_pending (EV_A_ (W)w); |
1421 | if (!ev_is_active (w)) |
2630 | if (expect_false (!ev_is_active (w))) |
1422 | return; |
2631 | return; |
1423 | |
2632 | |
|
|
2633 | EV_FREQUENT_CHECK; |
|
|
2634 | |
|
|
2635 | { |
|
|
2636 | int active = ev_active (w); |
|
|
2637 | |
1424 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2638 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1425 | |
2639 | |
1426 | if (((W)w)->active < periodiccnt--) |
2640 | --periodiccnt; |
|
|
2641 | |
|
|
2642 | if (expect_true (active < periodiccnt + HEAP0)) |
1427 | { |
2643 | { |
1428 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2644 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1429 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2645 | adjustheap (periodics, periodiccnt, active); |
1430 | } |
2646 | } |
|
|
2647 | } |
|
|
2648 | |
|
|
2649 | EV_FREQUENT_CHECK; |
1431 | |
2650 | |
1432 | ev_stop (EV_A_ (W)w); |
2651 | ev_stop (EV_A_ (W)w); |
1433 | } |
2652 | } |
1434 | |
2653 | |
1435 | void |
2654 | void noinline |
1436 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
2655 | ev_periodic_again (EV_P_ ev_periodic *w) |
1437 | { |
2656 | { |
1438 | /* TODO: use adjustheap and recalculation */ |
2657 | /* TODO: use adjustheap and recalculation */ |
1439 | ev_periodic_stop (EV_A_ w); |
2658 | ev_periodic_stop (EV_A_ w); |
1440 | ev_periodic_start (EV_A_ w); |
2659 | ev_periodic_start (EV_A_ w); |
1441 | } |
2660 | } |
1442 | #endif |
2661 | #endif |
1443 | |
2662 | |
1444 | void |
|
|
1445 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1446 | { |
|
|
1447 | if (ev_is_active (w)) |
|
|
1448 | return; |
|
|
1449 | |
|
|
1450 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1451 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1452 | idles [idlecnt - 1] = w; |
|
|
1453 | } |
|
|
1454 | |
|
|
1455 | void |
|
|
1456 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1457 | { |
|
|
1458 | ev_clear_pending (EV_A_ (W)w); |
|
|
1459 | if (!ev_is_active (w)) |
|
|
1460 | return; |
|
|
1461 | |
|
|
1462 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1463 | ev_stop (EV_A_ (W)w); |
|
|
1464 | } |
|
|
1465 | |
|
|
1466 | void |
|
|
1467 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1468 | { |
|
|
1469 | if (ev_is_active (w)) |
|
|
1470 | return; |
|
|
1471 | |
|
|
1472 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1473 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1474 | prepares [preparecnt - 1] = w; |
|
|
1475 | } |
|
|
1476 | |
|
|
1477 | void |
|
|
1478 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1479 | { |
|
|
1480 | ev_clear_pending (EV_A_ (W)w); |
|
|
1481 | if (!ev_is_active (w)) |
|
|
1482 | return; |
|
|
1483 | |
|
|
1484 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1485 | ev_stop (EV_A_ (W)w); |
|
|
1486 | } |
|
|
1487 | |
|
|
1488 | void |
|
|
1489 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1490 | { |
|
|
1491 | if (ev_is_active (w)) |
|
|
1492 | return; |
|
|
1493 | |
|
|
1494 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1495 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1496 | checks [checkcnt - 1] = w; |
|
|
1497 | } |
|
|
1498 | |
|
|
1499 | void |
|
|
1500 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1501 | { |
|
|
1502 | ev_clear_pending (EV_A_ (W)w); |
|
|
1503 | if (!ev_is_active (w)) |
|
|
1504 | return; |
|
|
1505 | |
|
|
1506 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1507 | ev_stop (EV_A_ (W)w); |
|
|
1508 | } |
|
|
1509 | |
|
|
1510 | #ifndef SA_RESTART |
2663 | #ifndef SA_RESTART |
1511 | # define SA_RESTART 0 |
2664 | # define SA_RESTART 0 |
1512 | #endif |
2665 | #endif |
1513 | |
2666 | |
1514 | void |
2667 | void noinline |
1515 | ev_signal_start (EV_P_ struct ev_signal *w) |
2668 | ev_signal_start (EV_P_ ev_signal *w) |
1516 | { |
2669 | { |
|
|
2670 | if (expect_false (ev_is_active (w))) |
|
|
2671 | return; |
|
|
2672 | |
|
|
2673 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
2674 | |
1517 | #if EV_MULTIPLICITY |
2675 | #if EV_MULTIPLICITY |
1518 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
2676 | assert (("libev: tried to attach to a signal from two different loops", |
|
|
2677 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
2678 | |
|
|
2679 | signals [w->signum - 1].loop = EV_A; |
|
|
2680 | #endif |
|
|
2681 | |
|
|
2682 | EV_FREQUENT_CHECK; |
|
|
2683 | |
|
|
2684 | #if EV_USE_SIGNALFD |
|
|
2685 | if (sigfd == -2) |
|
|
2686 | { |
|
|
2687 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
2688 | if (sigfd < 0 && errno == EINVAL) |
|
|
2689 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
2690 | |
|
|
2691 | if (sigfd >= 0) |
|
|
2692 | { |
|
|
2693 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
2694 | |
|
|
2695 | sigemptyset (&sigfd_set); |
|
|
2696 | |
|
|
2697 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2698 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2699 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2700 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2701 | } |
|
|
2702 | } |
|
|
2703 | |
|
|
2704 | if (sigfd >= 0) |
|
|
2705 | { |
|
|
2706 | /* TODO: check .head */ |
|
|
2707 | sigaddset (&sigfd_set, w->signum); |
|
|
2708 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2709 | |
|
|
2710 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2711 | } |
|
|
2712 | #endif |
|
|
2713 | |
|
|
2714 | ev_start (EV_A_ (W)w, 1); |
|
|
2715 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2716 | |
|
|
2717 | if (!((WL)w)->next) |
|
|
2718 | # if EV_USE_SIGNALFD |
|
|
2719 | if (sigfd < 0) /*TODO*/ |
1519 | #endif |
2720 | # endif |
1520 | if (ev_is_active (w)) |
2721 | { |
|
|
2722 | # if _WIN32 |
|
|
2723 | signal (w->signum, ev_sighandler); |
|
|
2724 | # else |
|
|
2725 | struct sigaction sa; |
|
|
2726 | |
|
|
2727 | evpipe_init (EV_A); |
|
|
2728 | |
|
|
2729 | sa.sa_handler = ev_sighandler; |
|
|
2730 | sigfillset (&sa.sa_mask); |
|
|
2731 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2732 | sigaction (w->signum, &sa, 0); |
|
|
2733 | |
|
|
2734 | sigemptyset (&sa.sa_mask); |
|
|
2735 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2736 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2737 | #endif |
|
|
2738 | } |
|
|
2739 | |
|
|
2740 | EV_FREQUENT_CHECK; |
|
|
2741 | } |
|
|
2742 | |
|
|
2743 | void noinline |
|
|
2744 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
2745 | { |
|
|
2746 | clear_pending (EV_A_ (W)w); |
|
|
2747 | if (expect_false (!ev_is_active (w))) |
1521 | return; |
2748 | return; |
1522 | |
2749 | |
1523 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2750 | EV_FREQUENT_CHECK; |
|
|
2751 | |
|
|
2752 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
2753 | ev_stop (EV_A_ (W)w); |
|
|
2754 | |
|
|
2755 | if (!signals [w->signum - 1].head) |
|
|
2756 | { |
|
|
2757 | #if EV_MULTIPLICITY |
|
|
2758 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2759 | #endif |
|
|
2760 | #if EV_USE_SIGNALFD |
|
|
2761 | if (sigfd >= 0) |
|
|
2762 | { |
|
|
2763 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
|
|
2764 | sigdelset (&sigfd_set, w->signum); |
|
|
2765 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2766 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
|
|
2767 | /*TODO: maybe unblock signal? */ |
|
|
2768 | } |
|
|
2769 | else |
|
|
2770 | #endif |
|
|
2771 | signal (w->signum, SIG_DFL); |
|
|
2772 | } |
|
|
2773 | |
|
|
2774 | EV_FREQUENT_CHECK; |
|
|
2775 | } |
|
|
2776 | |
|
|
2777 | void |
|
|
2778 | ev_child_start (EV_P_ ev_child *w) |
|
|
2779 | { |
|
|
2780 | #if EV_MULTIPLICITY |
|
|
2781 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2782 | #endif |
|
|
2783 | if (expect_false (ev_is_active (w))) |
|
|
2784 | return; |
|
|
2785 | |
|
|
2786 | EV_FREQUENT_CHECK; |
1524 | |
2787 | |
1525 | ev_start (EV_A_ (W)w, 1); |
2788 | ev_start (EV_A_ (W)w, 1); |
1526 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
2789 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1527 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1528 | |
2790 | |
1529 | if (!((WL)w)->next) |
2791 | EV_FREQUENT_CHECK; |
|
|
2792 | } |
|
|
2793 | |
|
|
2794 | void |
|
|
2795 | ev_child_stop (EV_P_ ev_child *w) |
|
|
2796 | { |
|
|
2797 | clear_pending (EV_A_ (W)w); |
|
|
2798 | if (expect_false (!ev_is_active (w))) |
|
|
2799 | return; |
|
|
2800 | |
|
|
2801 | EV_FREQUENT_CHECK; |
|
|
2802 | |
|
|
2803 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2804 | ev_stop (EV_A_ (W)w); |
|
|
2805 | |
|
|
2806 | EV_FREQUENT_CHECK; |
|
|
2807 | } |
|
|
2808 | |
|
|
2809 | #if EV_STAT_ENABLE |
|
|
2810 | |
|
|
2811 | # ifdef _WIN32 |
|
|
2812 | # undef lstat |
|
|
2813 | # define lstat(a,b) _stati64 (a,b) |
|
|
2814 | # endif |
|
|
2815 | |
|
|
2816 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2817 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2818 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2819 | |
|
|
2820 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2821 | |
|
|
2822 | #if EV_USE_INOTIFY |
|
|
2823 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2824 | |
|
|
2825 | static void noinline |
|
|
2826 | infy_add (EV_P_ ev_stat *w) |
|
|
2827 | { |
|
|
2828 | 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); |
|
|
2829 | |
|
|
2830 | if (w->wd < 0) |
|
|
2831 | { |
|
|
2832 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2833 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2834 | |
|
|
2835 | /* monitor some parent directory for speedup hints */ |
|
|
2836 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2837 | /* but an efficiency issue only */ |
|
|
2838 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2839 | { |
|
|
2840 | char path [4096]; |
|
|
2841 | strcpy (path, w->path); |
|
|
2842 | |
|
|
2843 | do |
|
|
2844 | { |
|
|
2845 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2846 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2847 | |
|
|
2848 | char *pend = strrchr (path, '/'); |
|
|
2849 | |
|
|
2850 | if (!pend || pend == path) |
|
|
2851 | break; |
|
|
2852 | |
|
|
2853 | *pend = 0; |
|
|
2854 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2855 | } |
|
|
2856 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2857 | } |
1530 | { |
2858 | } |
|
|
2859 | |
|
|
2860 | if (w->wd >= 0) |
|
|
2861 | { |
|
|
2862 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2863 | |
|
|
2864 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2865 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2866 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2867 | struct statfs sfs; |
|
|
2868 | |
|
|
2869 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2870 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2871 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2872 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2873 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2874 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2875 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2876 | return; |
|
|
2877 | |
|
|
2878 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2879 | ev_timer_again (EV_A_ &w->timer); |
|
|
2880 | } |
|
|
2881 | } |
|
|
2882 | |
|
|
2883 | static void noinline |
|
|
2884 | infy_del (EV_P_ ev_stat *w) |
|
|
2885 | { |
|
|
2886 | int slot; |
|
|
2887 | int wd = w->wd; |
|
|
2888 | |
|
|
2889 | if (wd < 0) |
|
|
2890 | return; |
|
|
2891 | |
|
|
2892 | w->wd = -2; |
|
|
2893 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2894 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2895 | |
|
|
2896 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2897 | inotify_rm_watch (fs_fd, wd); |
|
|
2898 | } |
|
|
2899 | |
|
|
2900 | static void noinline |
|
|
2901 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2902 | { |
|
|
2903 | if (slot < 0) |
|
|
2904 | /* overflow, need to check for all hash slots */ |
|
|
2905 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2906 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2907 | else |
|
|
2908 | { |
|
|
2909 | WL w_; |
|
|
2910 | |
|
|
2911 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2912 | { |
|
|
2913 | ev_stat *w = (ev_stat *)w_; |
|
|
2914 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2915 | |
|
|
2916 | if (w->wd == wd || wd == -1) |
|
|
2917 | { |
|
|
2918 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2919 | { |
|
|
2920 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2921 | w->wd = -1; |
|
|
2922 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2923 | } |
|
|
2924 | |
|
|
2925 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2926 | } |
|
|
2927 | } |
|
|
2928 | } |
|
|
2929 | } |
|
|
2930 | |
|
|
2931 | static void |
|
|
2932 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2933 | { |
|
|
2934 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2935 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2936 | int ofs; |
|
|
2937 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2938 | |
|
|
2939 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2940 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2941 | } |
|
|
2942 | |
|
|
2943 | inline_size void |
|
|
2944 | check_2625 (EV_P) |
|
|
2945 | { |
|
|
2946 | /* kernels < 2.6.25 are borked |
|
|
2947 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2948 | */ |
|
|
2949 | struct utsname buf; |
|
|
2950 | int major, minor, micro; |
|
|
2951 | |
|
|
2952 | if (uname (&buf)) |
|
|
2953 | return; |
|
|
2954 | |
|
|
2955 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2956 | return; |
|
|
2957 | |
|
|
2958 | if (major < 2 |
|
|
2959 | || (major == 2 && minor < 6) |
|
|
2960 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2961 | return; |
|
|
2962 | |
|
|
2963 | fs_2625 = 1; |
|
|
2964 | } |
|
|
2965 | |
|
|
2966 | inline_size void |
|
|
2967 | infy_init (EV_P) |
|
|
2968 | { |
|
|
2969 | if (fs_fd != -2) |
|
|
2970 | return; |
|
|
2971 | |
|
|
2972 | fs_fd = -1; |
|
|
2973 | |
|
|
2974 | check_2625 (EV_A); |
|
|
2975 | |
|
|
2976 | fs_fd = inotify_init (); |
|
|
2977 | |
|
|
2978 | if (fs_fd >= 0) |
|
|
2979 | { |
|
|
2980 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2981 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2982 | ev_io_start (EV_A_ &fs_w); |
|
|
2983 | } |
|
|
2984 | } |
|
|
2985 | |
|
|
2986 | inline_size void |
|
|
2987 | infy_fork (EV_P) |
|
|
2988 | { |
|
|
2989 | int slot; |
|
|
2990 | |
|
|
2991 | if (fs_fd < 0) |
|
|
2992 | return; |
|
|
2993 | |
|
|
2994 | close (fs_fd); |
|
|
2995 | fs_fd = inotify_init (); |
|
|
2996 | |
|
|
2997 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2998 | { |
|
|
2999 | WL w_ = fs_hash [slot].head; |
|
|
3000 | fs_hash [slot].head = 0; |
|
|
3001 | |
|
|
3002 | while (w_) |
|
|
3003 | { |
|
|
3004 | ev_stat *w = (ev_stat *)w_; |
|
|
3005 | w_ = w_->next; /* lets us add this watcher */ |
|
|
3006 | |
|
|
3007 | w->wd = -1; |
|
|
3008 | |
|
|
3009 | if (fs_fd >= 0) |
|
|
3010 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3011 | else |
|
|
3012 | ev_timer_again (EV_A_ &w->timer); |
|
|
3013 | } |
|
|
3014 | } |
|
|
3015 | } |
|
|
3016 | |
|
|
3017 | #endif |
|
|
3018 | |
1531 | #if _WIN32 |
3019 | #ifdef _WIN32 |
1532 | signal (w->signum, sighandler); |
3020 | # define EV_LSTAT(p,b) _stati64 (p, b) |
1533 | #else |
3021 | #else |
1534 | struct sigaction sa; |
3022 | # define EV_LSTAT(p,b) lstat (p, b) |
1535 | sa.sa_handler = sighandler; |
|
|
1536 | sigfillset (&sa.sa_mask); |
|
|
1537 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1538 | sigaction (w->signum, &sa, 0); |
|
|
1539 | #endif |
3023 | #endif |
1540 | } |
|
|
1541 | } |
|
|
1542 | |
3024 | |
1543 | void |
3025 | void |
1544 | ev_signal_stop (EV_P_ struct ev_signal *w) |
3026 | ev_stat_stat (EV_P_ ev_stat *w) |
1545 | { |
3027 | { |
1546 | ev_clear_pending (EV_A_ (W)w); |
3028 | if (lstat (w->path, &w->attr) < 0) |
1547 | if (!ev_is_active (w)) |
3029 | w->attr.st_nlink = 0; |
|
|
3030 | else if (!w->attr.st_nlink) |
|
|
3031 | w->attr.st_nlink = 1; |
|
|
3032 | } |
|
|
3033 | |
|
|
3034 | static void noinline |
|
|
3035 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3036 | { |
|
|
3037 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3038 | |
|
|
3039 | /* we copy this here each the time so that */ |
|
|
3040 | /* prev has the old value when the callback gets invoked */ |
|
|
3041 | w->prev = w->attr; |
|
|
3042 | ev_stat_stat (EV_A_ w); |
|
|
3043 | |
|
|
3044 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3045 | if ( |
|
|
3046 | w->prev.st_dev != w->attr.st_dev |
|
|
3047 | || w->prev.st_ino != w->attr.st_ino |
|
|
3048 | || w->prev.st_mode != w->attr.st_mode |
|
|
3049 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
3050 | || w->prev.st_uid != w->attr.st_uid |
|
|
3051 | || w->prev.st_gid != w->attr.st_gid |
|
|
3052 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
3053 | || w->prev.st_size != w->attr.st_size |
|
|
3054 | || w->prev.st_atime != w->attr.st_atime |
|
|
3055 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
3056 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
3057 | ) { |
|
|
3058 | #if EV_USE_INOTIFY |
|
|
3059 | if (fs_fd >= 0) |
|
|
3060 | { |
|
|
3061 | infy_del (EV_A_ w); |
|
|
3062 | infy_add (EV_A_ w); |
|
|
3063 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3064 | } |
|
|
3065 | #endif |
|
|
3066 | |
|
|
3067 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3068 | } |
|
|
3069 | } |
|
|
3070 | |
|
|
3071 | void |
|
|
3072 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
3073 | { |
|
|
3074 | if (expect_false (ev_is_active (w))) |
1548 | return; |
3075 | return; |
1549 | |
3076 | |
1550 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
3077 | ev_stat_stat (EV_A_ w); |
|
|
3078 | |
|
|
3079 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3080 | w->interval = MIN_STAT_INTERVAL; |
|
|
3081 | |
|
|
3082 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3083 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3084 | |
|
|
3085 | #if EV_USE_INOTIFY |
|
|
3086 | infy_init (EV_A); |
|
|
3087 | |
|
|
3088 | if (fs_fd >= 0) |
|
|
3089 | infy_add (EV_A_ w); |
|
|
3090 | else |
|
|
3091 | #endif |
|
|
3092 | ev_timer_again (EV_A_ &w->timer); |
|
|
3093 | |
|
|
3094 | ev_start (EV_A_ (W)w, 1); |
|
|
3095 | |
|
|
3096 | EV_FREQUENT_CHECK; |
|
|
3097 | } |
|
|
3098 | |
|
|
3099 | void |
|
|
3100 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
3101 | { |
|
|
3102 | clear_pending (EV_A_ (W)w); |
|
|
3103 | if (expect_false (!ev_is_active (w))) |
|
|
3104 | return; |
|
|
3105 | |
|
|
3106 | EV_FREQUENT_CHECK; |
|
|
3107 | |
|
|
3108 | #if EV_USE_INOTIFY |
|
|
3109 | infy_del (EV_A_ w); |
|
|
3110 | #endif |
|
|
3111 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3112 | |
1551 | ev_stop (EV_A_ (W)w); |
3113 | ev_stop (EV_A_ (W)w); |
1552 | |
3114 | |
1553 | if (!signals [w->signum - 1].head) |
3115 | EV_FREQUENT_CHECK; |
1554 | signal (w->signum, SIG_DFL); |
|
|
1555 | } |
3116 | } |
|
|
3117 | #endif |
1556 | |
3118 | |
|
|
3119 | #if EV_IDLE_ENABLE |
1557 | void |
3120 | void |
1558 | ev_child_start (EV_P_ struct ev_child *w) |
3121 | ev_idle_start (EV_P_ ev_idle *w) |
1559 | { |
3122 | { |
1560 | #if EV_MULTIPLICITY |
|
|
1561 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1562 | #endif |
|
|
1563 | if (ev_is_active (w)) |
3123 | if (expect_false (ev_is_active (w))) |
1564 | return; |
3124 | return; |
1565 | |
3125 | |
|
|
3126 | pri_adjust (EV_A_ (W)w); |
|
|
3127 | |
|
|
3128 | EV_FREQUENT_CHECK; |
|
|
3129 | |
|
|
3130 | { |
|
|
3131 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3132 | |
|
|
3133 | ++idleall; |
|
|
3134 | ev_start (EV_A_ (W)w, active); |
|
|
3135 | |
|
|
3136 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
3137 | idles [ABSPRI (w)][active - 1] = w; |
|
|
3138 | } |
|
|
3139 | |
|
|
3140 | EV_FREQUENT_CHECK; |
|
|
3141 | } |
|
|
3142 | |
|
|
3143 | void |
|
|
3144 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3145 | { |
|
|
3146 | clear_pending (EV_A_ (W)w); |
|
|
3147 | if (expect_false (!ev_is_active (w))) |
|
|
3148 | return; |
|
|
3149 | |
|
|
3150 | EV_FREQUENT_CHECK; |
|
|
3151 | |
|
|
3152 | { |
|
|
3153 | int active = ev_active (w); |
|
|
3154 | |
|
|
3155 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3156 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3157 | |
|
|
3158 | ev_stop (EV_A_ (W)w); |
|
|
3159 | --idleall; |
|
|
3160 | } |
|
|
3161 | |
|
|
3162 | EV_FREQUENT_CHECK; |
|
|
3163 | } |
|
|
3164 | #endif |
|
|
3165 | |
|
|
3166 | void |
|
|
3167 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3168 | { |
|
|
3169 | if (expect_false (ev_is_active (w))) |
|
|
3170 | return; |
|
|
3171 | |
|
|
3172 | EV_FREQUENT_CHECK; |
|
|
3173 | |
|
|
3174 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
3175 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
3176 | prepares [preparecnt - 1] = w; |
|
|
3177 | |
|
|
3178 | EV_FREQUENT_CHECK; |
|
|
3179 | } |
|
|
3180 | |
|
|
3181 | void |
|
|
3182 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
3183 | { |
|
|
3184 | clear_pending (EV_A_ (W)w); |
|
|
3185 | if (expect_false (!ev_is_active (w))) |
|
|
3186 | return; |
|
|
3187 | |
|
|
3188 | EV_FREQUENT_CHECK; |
|
|
3189 | |
|
|
3190 | { |
|
|
3191 | int active = ev_active (w); |
|
|
3192 | |
|
|
3193 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3194 | ev_active (prepares [active - 1]) = active; |
|
|
3195 | } |
|
|
3196 | |
|
|
3197 | ev_stop (EV_A_ (W)w); |
|
|
3198 | |
|
|
3199 | EV_FREQUENT_CHECK; |
|
|
3200 | } |
|
|
3201 | |
|
|
3202 | void |
|
|
3203 | ev_check_start (EV_P_ ev_check *w) |
|
|
3204 | { |
|
|
3205 | if (expect_false (ev_is_active (w))) |
|
|
3206 | return; |
|
|
3207 | |
|
|
3208 | EV_FREQUENT_CHECK; |
|
|
3209 | |
|
|
3210 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
3211 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
3212 | checks [checkcnt - 1] = w; |
|
|
3213 | |
|
|
3214 | EV_FREQUENT_CHECK; |
|
|
3215 | } |
|
|
3216 | |
|
|
3217 | void |
|
|
3218 | ev_check_stop (EV_P_ ev_check *w) |
|
|
3219 | { |
|
|
3220 | clear_pending (EV_A_ (W)w); |
|
|
3221 | if (expect_false (!ev_is_active (w))) |
|
|
3222 | return; |
|
|
3223 | |
|
|
3224 | EV_FREQUENT_CHECK; |
|
|
3225 | |
|
|
3226 | { |
|
|
3227 | int active = ev_active (w); |
|
|
3228 | |
|
|
3229 | checks [active - 1] = checks [--checkcnt]; |
|
|
3230 | ev_active (checks [active - 1]) = active; |
|
|
3231 | } |
|
|
3232 | |
|
|
3233 | ev_stop (EV_A_ (W)w); |
|
|
3234 | |
|
|
3235 | EV_FREQUENT_CHECK; |
|
|
3236 | } |
|
|
3237 | |
|
|
3238 | #if EV_EMBED_ENABLE |
|
|
3239 | void noinline |
|
|
3240 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
3241 | { |
|
|
3242 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3243 | } |
|
|
3244 | |
|
|
3245 | static void |
|
|
3246 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3247 | { |
|
|
3248 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3249 | |
|
|
3250 | if (ev_cb (w)) |
|
|
3251 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3252 | else |
|
|
3253 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3254 | } |
|
|
3255 | |
|
|
3256 | static void |
|
|
3257 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3258 | { |
|
|
3259 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3260 | |
|
|
3261 | { |
|
|
3262 | EV_P = w->other; |
|
|
3263 | |
|
|
3264 | while (fdchangecnt) |
|
|
3265 | { |
|
|
3266 | fd_reify (EV_A); |
|
|
3267 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3268 | } |
|
|
3269 | } |
|
|
3270 | } |
|
|
3271 | |
|
|
3272 | static void |
|
|
3273 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3274 | { |
|
|
3275 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3276 | |
|
|
3277 | ev_embed_stop (EV_A_ w); |
|
|
3278 | |
|
|
3279 | { |
|
|
3280 | EV_P = w->other; |
|
|
3281 | |
|
|
3282 | ev_loop_fork (EV_A); |
|
|
3283 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3284 | } |
|
|
3285 | |
|
|
3286 | ev_embed_start (EV_A_ w); |
|
|
3287 | } |
|
|
3288 | |
|
|
3289 | #if 0 |
|
|
3290 | static void |
|
|
3291 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3292 | { |
|
|
3293 | ev_idle_stop (EV_A_ idle); |
|
|
3294 | } |
|
|
3295 | #endif |
|
|
3296 | |
|
|
3297 | void |
|
|
3298 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3299 | { |
|
|
3300 | if (expect_false (ev_is_active (w))) |
|
|
3301 | return; |
|
|
3302 | |
|
|
3303 | { |
|
|
3304 | EV_P = w->other; |
|
|
3305 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3306 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3307 | } |
|
|
3308 | |
|
|
3309 | EV_FREQUENT_CHECK; |
|
|
3310 | |
|
|
3311 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3312 | ev_io_start (EV_A_ &w->io); |
|
|
3313 | |
|
|
3314 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3315 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3316 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3317 | |
|
|
3318 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3319 | ev_fork_start (EV_A_ &w->fork); |
|
|
3320 | |
|
|
3321 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3322 | |
1566 | ev_start (EV_A_ (W)w, 1); |
3323 | ev_start (EV_A_ (W)w, 1); |
1567 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1568 | } |
|
|
1569 | |
3324 | |
|
|
3325 | EV_FREQUENT_CHECK; |
|
|
3326 | } |
|
|
3327 | |
1570 | void |
3328 | void |
1571 | ev_child_stop (EV_P_ struct ev_child *w) |
3329 | ev_embed_stop (EV_P_ ev_embed *w) |
1572 | { |
3330 | { |
1573 | ev_clear_pending (EV_A_ (W)w); |
3331 | clear_pending (EV_A_ (W)w); |
1574 | if (!ev_is_active (w)) |
3332 | if (expect_false (!ev_is_active (w))) |
1575 | return; |
3333 | return; |
1576 | |
3334 | |
1577 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3335 | EV_FREQUENT_CHECK; |
|
|
3336 | |
|
|
3337 | ev_io_stop (EV_A_ &w->io); |
|
|
3338 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3339 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3340 | |
|
|
3341 | EV_FREQUENT_CHECK; |
|
|
3342 | } |
|
|
3343 | #endif |
|
|
3344 | |
|
|
3345 | #if EV_FORK_ENABLE |
|
|
3346 | void |
|
|
3347 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3348 | { |
|
|
3349 | if (expect_false (ev_is_active (w))) |
|
|
3350 | return; |
|
|
3351 | |
|
|
3352 | EV_FREQUENT_CHECK; |
|
|
3353 | |
|
|
3354 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3355 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3356 | forks [forkcnt - 1] = w; |
|
|
3357 | |
|
|
3358 | EV_FREQUENT_CHECK; |
|
|
3359 | } |
|
|
3360 | |
|
|
3361 | void |
|
|
3362 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3363 | { |
|
|
3364 | clear_pending (EV_A_ (W)w); |
|
|
3365 | if (expect_false (!ev_is_active (w))) |
|
|
3366 | return; |
|
|
3367 | |
|
|
3368 | EV_FREQUENT_CHECK; |
|
|
3369 | |
|
|
3370 | { |
|
|
3371 | int active = ev_active (w); |
|
|
3372 | |
|
|
3373 | forks [active - 1] = forks [--forkcnt]; |
|
|
3374 | ev_active (forks [active - 1]) = active; |
|
|
3375 | } |
|
|
3376 | |
1578 | ev_stop (EV_A_ (W)w); |
3377 | ev_stop (EV_A_ (W)w); |
|
|
3378 | |
|
|
3379 | EV_FREQUENT_CHECK; |
1579 | } |
3380 | } |
|
|
3381 | #endif |
|
|
3382 | |
|
|
3383 | #if EV_ASYNC_ENABLE |
|
|
3384 | void |
|
|
3385 | ev_async_start (EV_P_ ev_async *w) |
|
|
3386 | { |
|
|
3387 | if (expect_false (ev_is_active (w))) |
|
|
3388 | return; |
|
|
3389 | |
|
|
3390 | evpipe_init (EV_A); |
|
|
3391 | |
|
|
3392 | EV_FREQUENT_CHECK; |
|
|
3393 | |
|
|
3394 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3395 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3396 | asyncs [asynccnt - 1] = w; |
|
|
3397 | |
|
|
3398 | EV_FREQUENT_CHECK; |
|
|
3399 | } |
|
|
3400 | |
|
|
3401 | void |
|
|
3402 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3403 | { |
|
|
3404 | clear_pending (EV_A_ (W)w); |
|
|
3405 | if (expect_false (!ev_is_active (w))) |
|
|
3406 | return; |
|
|
3407 | |
|
|
3408 | EV_FREQUENT_CHECK; |
|
|
3409 | |
|
|
3410 | { |
|
|
3411 | int active = ev_active (w); |
|
|
3412 | |
|
|
3413 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3414 | ev_active (asyncs [active - 1]) = active; |
|
|
3415 | } |
|
|
3416 | |
|
|
3417 | ev_stop (EV_A_ (W)w); |
|
|
3418 | |
|
|
3419 | EV_FREQUENT_CHECK; |
|
|
3420 | } |
|
|
3421 | |
|
|
3422 | void |
|
|
3423 | ev_async_send (EV_P_ ev_async *w) |
|
|
3424 | { |
|
|
3425 | w->sent = 1; |
|
|
3426 | evpipe_write (EV_A_ &async_pending); |
|
|
3427 | } |
|
|
3428 | #endif |
1580 | |
3429 | |
1581 | /*****************************************************************************/ |
3430 | /*****************************************************************************/ |
1582 | |
3431 | |
1583 | struct ev_once |
3432 | struct ev_once |
1584 | { |
3433 | { |
1585 | struct ev_io io; |
3434 | ev_io io; |
1586 | struct ev_timer to; |
3435 | ev_timer to; |
1587 | void (*cb)(int revents, void *arg); |
3436 | void (*cb)(int revents, void *arg); |
1588 | void *arg; |
3437 | void *arg; |
1589 | }; |
3438 | }; |
1590 | |
3439 | |
1591 | static void |
3440 | static void |
1592 | once_cb (EV_P_ struct ev_once *once, int revents) |
3441 | once_cb (EV_P_ struct ev_once *once, int revents) |
1593 | { |
3442 | { |
1594 | void (*cb)(int revents, void *arg) = once->cb; |
3443 | void (*cb)(int revents, void *arg) = once->cb; |
1595 | void *arg = once->arg; |
3444 | void *arg = once->arg; |
1596 | |
3445 | |
1597 | ev_io_stop (EV_A_ &once->io); |
3446 | ev_io_stop (EV_A_ &once->io); |
1598 | ev_timer_stop (EV_A_ &once->to); |
3447 | ev_timer_stop (EV_A_ &once->to); |
1599 | ev_free (once); |
3448 | ev_free (once); |
1600 | |
3449 | |
1601 | cb (revents, arg); |
3450 | cb (revents, arg); |
1602 | } |
3451 | } |
1603 | |
3452 | |
1604 | static void |
3453 | static void |
1605 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
3454 | once_cb_io (EV_P_ ev_io *w, int revents) |
1606 | { |
3455 | { |
1607 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3456 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3457 | |
|
|
3458 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1608 | } |
3459 | } |
1609 | |
3460 | |
1610 | static void |
3461 | static void |
1611 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
3462 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1612 | { |
3463 | { |
1613 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3464 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
3465 | |
|
|
3466 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1614 | } |
3467 | } |
1615 | |
3468 | |
1616 | void |
3469 | void |
1617 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3470 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1618 | { |
3471 | { |
1619 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3472 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1620 | |
3473 | |
1621 | if (!once) |
3474 | if (expect_false (!once)) |
|
|
3475 | { |
1622 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3476 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1623 | else |
3477 | return; |
1624 | { |
3478 | } |
|
|
3479 | |
1625 | once->cb = cb; |
3480 | once->cb = cb; |
1626 | once->arg = arg; |
3481 | once->arg = arg; |
1627 | |
3482 | |
1628 | ev_init (&once->io, once_cb_io); |
3483 | ev_init (&once->io, once_cb_io); |
1629 | if (fd >= 0) |
3484 | if (fd >= 0) |
|
|
3485 | { |
|
|
3486 | ev_io_set (&once->io, fd, events); |
|
|
3487 | ev_io_start (EV_A_ &once->io); |
|
|
3488 | } |
|
|
3489 | |
|
|
3490 | ev_init (&once->to, once_cb_to); |
|
|
3491 | if (timeout >= 0.) |
|
|
3492 | { |
|
|
3493 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3494 | ev_timer_start (EV_A_ &once->to); |
|
|
3495 | } |
|
|
3496 | } |
|
|
3497 | |
|
|
3498 | /*****************************************************************************/ |
|
|
3499 | |
|
|
3500 | #if EV_WALK_ENABLE |
|
|
3501 | void |
|
|
3502 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3503 | { |
|
|
3504 | int i, j; |
|
|
3505 | ev_watcher_list *wl, *wn; |
|
|
3506 | |
|
|
3507 | if (types & (EV_IO | EV_EMBED)) |
|
|
3508 | for (i = 0; i < anfdmax; ++i) |
|
|
3509 | for (wl = anfds [i].head; wl; ) |
1630 | { |
3510 | { |
1631 | ev_io_set (&once->io, fd, events); |
3511 | wn = wl->next; |
1632 | ev_io_start (EV_A_ &once->io); |
3512 | |
|
|
3513 | #if EV_EMBED_ENABLE |
|
|
3514 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3515 | { |
|
|
3516 | if (types & EV_EMBED) |
|
|
3517 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3518 | } |
|
|
3519 | else |
|
|
3520 | #endif |
|
|
3521 | #if EV_USE_INOTIFY |
|
|
3522 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3523 | ; |
|
|
3524 | else |
|
|
3525 | #endif |
|
|
3526 | if ((ev_io *)wl != &pipe_w) |
|
|
3527 | if (types & EV_IO) |
|
|
3528 | cb (EV_A_ EV_IO, wl); |
|
|
3529 | |
|
|
3530 | wl = wn; |
1633 | } |
3531 | } |
1634 | |
3532 | |
1635 | ev_init (&once->to, once_cb_to); |
3533 | if (types & (EV_TIMER | EV_STAT)) |
1636 | if (timeout >= 0.) |
3534 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3535 | #if EV_STAT_ENABLE |
|
|
3536 | /*TODO: timer is not always active*/ |
|
|
3537 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1637 | { |
3538 | { |
1638 | ev_timer_set (&once->to, timeout, 0.); |
3539 | if (types & EV_STAT) |
1639 | ev_timer_start (EV_A_ &once->to); |
3540 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1640 | } |
3541 | } |
1641 | } |
3542 | else |
|
|
3543 | #endif |
|
|
3544 | if (types & EV_TIMER) |
|
|
3545 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
|
|
3546 | |
|
|
3547 | #if EV_PERIODIC_ENABLE |
|
|
3548 | if (types & EV_PERIODIC) |
|
|
3549 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3550 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3551 | #endif |
|
|
3552 | |
|
|
3553 | #if EV_IDLE_ENABLE |
|
|
3554 | if (types & EV_IDLE) |
|
|
3555 | for (j = NUMPRI; i--; ) |
|
|
3556 | for (i = idlecnt [j]; i--; ) |
|
|
3557 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3558 | #endif |
|
|
3559 | |
|
|
3560 | #if EV_FORK_ENABLE |
|
|
3561 | if (types & EV_FORK) |
|
|
3562 | for (i = forkcnt; i--; ) |
|
|
3563 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3564 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3565 | #endif |
|
|
3566 | |
|
|
3567 | #if EV_ASYNC_ENABLE |
|
|
3568 | if (types & EV_ASYNC) |
|
|
3569 | for (i = asynccnt; i--; ) |
|
|
3570 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
3571 | #endif |
|
|
3572 | |
|
|
3573 | if (types & EV_PREPARE) |
|
|
3574 | for (i = preparecnt; i--; ) |
|
|
3575 | #if EV_EMBED_ENABLE |
|
|
3576 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
3577 | #endif |
|
|
3578 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
3579 | |
|
|
3580 | if (types & EV_CHECK) |
|
|
3581 | for (i = checkcnt; i--; ) |
|
|
3582 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
3583 | |
|
|
3584 | if (types & EV_SIGNAL) |
|
|
3585 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
3586 | for (wl = signals [i].head; wl; ) |
|
|
3587 | { |
|
|
3588 | wn = wl->next; |
|
|
3589 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
3590 | wl = wn; |
|
|
3591 | } |
|
|
3592 | |
|
|
3593 | if (types & EV_CHILD) |
|
|
3594 | for (i = EV_PID_HASHSIZE; i--; ) |
|
|
3595 | for (wl = childs [i]; wl; ) |
|
|
3596 | { |
|
|
3597 | wn = wl->next; |
|
|
3598 | cb (EV_A_ EV_CHILD, wl); |
|
|
3599 | wl = wn; |
|
|
3600 | } |
|
|
3601 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
3602 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
1642 | } |
3603 | } |
|
|
3604 | #endif |
|
|
3605 | |
|
|
3606 | #if EV_MULTIPLICITY |
|
|
3607 | #include "ev_wrap.h" |
|
|
3608 | #endif |
1643 | |
3609 | |
1644 | #ifdef __cplusplus |
3610 | #ifdef __cplusplus |
1645 | } |
3611 | } |
1646 | #endif |
3612 | #endif |
1647 | |
3613 | |