1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
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39 | |
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40 | #ifdef __cplusplus |
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41 | extern "C" { |
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42 | #endif |
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43 | |
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44 | /* this big block deduces configuration from config.h */ |
31 | #ifndef EV_STANDALONE |
45 | #ifndef EV_STANDALONE |
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46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
32 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_GETTIME |
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53 | # ifndef EV_USE_MONOTONIC |
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54 | # define EV_USE_MONOTONIC 1 |
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55 | # endif |
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56 | # ifndef EV_USE_REALTIME |
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57 | # define EV_USE_REALTIME 1 |
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58 | # endif |
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59 | # else |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 0 |
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62 | # endif |
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63 | # ifndef EV_USE_REALTIME |
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64 | # define EV_USE_REALTIME 0 |
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65 | # endif |
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66 | # endif |
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67 | |
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68 | # ifndef EV_USE_NANOSLEEP |
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69 | # if HAVE_NANOSLEEP |
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70 | # define EV_USE_NANOSLEEP 1 |
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71 | # else |
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72 | # define EV_USE_NANOSLEEP 0 |
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73 | # endif |
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74 | # endif |
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75 | |
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76 | # ifndef EV_USE_SELECT |
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77 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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78 | # define EV_USE_SELECT 1 |
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79 | # else |
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80 | # define EV_USE_SELECT 0 |
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81 | # endif |
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82 | # endif |
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83 | |
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84 | # ifndef EV_USE_POLL |
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85 | # if HAVE_POLL && HAVE_POLL_H |
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86 | # define EV_USE_POLL 1 |
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87 | # else |
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88 | # define EV_USE_POLL 0 |
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89 | # endif |
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90 | # endif |
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91 | |
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92 | # ifndef EV_USE_EPOLL |
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93 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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94 | # define EV_USE_EPOLL 1 |
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95 | # else |
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96 | # define EV_USE_EPOLL 0 |
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97 | # endif |
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98 | # endif |
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99 | |
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100 | # ifndef EV_USE_KQUEUE |
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101 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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102 | # define EV_USE_KQUEUE 1 |
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103 | # else |
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104 | # define EV_USE_KQUEUE 0 |
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105 | # endif |
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106 | # endif |
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107 | |
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108 | # ifndef EV_USE_PORT |
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109 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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110 | # define EV_USE_PORT 1 |
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111 | # else |
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112 | # define EV_USE_PORT 0 |
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113 | # endif |
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114 | # endif |
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115 | |
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116 | # ifndef EV_USE_INOTIFY |
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117 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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118 | # define EV_USE_INOTIFY 1 |
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119 | # else |
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120 | # define EV_USE_INOTIFY 0 |
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121 | # endif |
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122 | # endif |
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123 | |
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124 | # ifndef EV_USE_EVENTFD |
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125 | # if HAVE_EVENTFD |
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126 | # define EV_USE_EVENTFD 1 |
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127 | # else |
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128 | # define EV_USE_EVENTFD 0 |
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129 | # endif |
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130 | # endif |
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131 | |
33 | #endif |
132 | #endif |
34 | |
133 | |
35 | #include <math.h> |
134 | #include <math.h> |
36 | #include <stdlib.h> |
135 | #include <stdlib.h> |
37 | #include <unistd.h> |
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38 | #include <fcntl.h> |
136 | #include <fcntl.h> |
39 | #include <signal.h> |
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40 | #include <stddef.h> |
137 | #include <stddef.h> |
41 | |
138 | |
42 | #include <stdio.h> |
139 | #include <stdio.h> |
43 | |
140 | |
44 | #include <assert.h> |
141 | #include <assert.h> |
45 | #include <errno.h> |
142 | #include <errno.h> |
46 | #include <sys/types.h> |
143 | #include <sys/types.h> |
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144 | #include <time.h> |
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145 | |
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146 | #include <signal.h> |
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147 | |
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148 | #ifdef EV_H |
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149 | # include EV_H |
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150 | #else |
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151 | # include "ev.h" |
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152 | #endif |
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153 | |
47 | #ifndef WIN32 |
154 | #ifndef _WIN32 |
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155 | # include <sys/time.h> |
48 | # include <sys/wait.h> |
156 | # include <sys/wait.h> |
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157 | # include <unistd.h> |
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158 | #else |
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159 | # define WIN32_LEAN_AND_MEAN |
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160 | # include <windows.h> |
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161 | # ifndef EV_SELECT_IS_WINSOCKET |
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162 | # define EV_SELECT_IS_WINSOCKET 1 |
49 | #endif |
163 | # endif |
50 | #include <sys/time.h> |
164 | #endif |
51 | #include <time.h> |
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52 | |
165 | |
53 | /**/ |
166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
54 | |
167 | |
55 | #ifndef EV_USE_MONOTONIC |
168 | #ifndef EV_USE_MONOTONIC |
56 | # define EV_USE_MONOTONIC 1 |
169 | # define EV_USE_MONOTONIC 0 |
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170 | #endif |
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171 | |
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172 | #ifndef EV_USE_REALTIME |
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173 | # define EV_USE_REALTIME 0 |
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174 | #endif |
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175 | |
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176 | #ifndef EV_USE_NANOSLEEP |
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177 | # define EV_USE_NANOSLEEP 0 |
57 | #endif |
178 | #endif |
58 | |
179 | |
59 | #ifndef EV_USE_SELECT |
180 | #ifndef EV_USE_SELECT |
60 | # define EV_USE_SELECT 1 |
181 | # define EV_USE_SELECT 1 |
61 | #endif |
182 | #endif |
62 | |
183 | |
63 | #ifndef EV_USEV_POLL |
184 | #ifndef EV_USE_POLL |
64 | # define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ |
185 | # ifdef _WIN32 |
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186 | # define EV_USE_POLL 0 |
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187 | # else |
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188 | # define EV_USE_POLL 1 |
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189 | # endif |
65 | #endif |
190 | #endif |
66 | |
191 | |
67 | #ifndef EV_USE_EPOLL |
192 | #ifndef EV_USE_EPOLL |
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193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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194 | # define EV_USE_EPOLL 1 |
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195 | # else |
68 | # define EV_USE_EPOLL 0 |
196 | # define EV_USE_EPOLL 0 |
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197 | # endif |
69 | #endif |
198 | #endif |
70 | |
199 | |
71 | #ifndef EV_USE_KQUEUE |
200 | #ifndef EV_USE_KQUEUE |
72 | # define EV_USE_KQUEUE 0 |
201 | # define EV_USE_KQUEUE 0 |
73 | #endif |
202 | #endif |
74 | |
203 | |
75 | #ifndef EV_USE_REALTIME |
204 | #ifndef EV_USE_PORT |
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205 | # define EV_USE_PORT 0 |
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206 | #endif |
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207 | |
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208 | #ifndef EV_USE_INOTIFY |
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209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
76 | # define EV_USE_REALTIME 1 |
210 | # define EV_USE_INOTIFY 1 |
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211 | # else |
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212 | # define EV_USE_INOTIFY 0 |
77 | #endif |
213 | # endif |
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214 | #endif |
78 | |
215 | |
79 | /**/ |
216 | #ifndef EV_PID_HASHSIZE |
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217 | # if EV_MINIMAL |
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218 | # define EV_PID_HASHSIZE 1 |
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219 | # else |
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220 | # define EV_PID_HASHSIZE 16 |
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221 | # endif |
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222 | #endif |
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223 | |
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224 | #ifndef EV_INOTIFY_HASHSIZE |
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225 | # if EV_MINIMAL |
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226 | # define EV_INOTIFY_HASHSIZE 1 |
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227 | # else |
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228 | # define EV_INOTIFY_HASHSIZE 16 |
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229 | # endif |
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230 | #endif |
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231 | |
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232 | #ifndef EV_USE_EVENTFD |
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233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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234 | # define EV_USE_EVENTFD 1 |
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235 | # else |
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236 | # define EV_USE_EVENTFD 0 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
80 | |
241 | |
81 | #ifndef CLOCK_MONOTONIC |
242 | #ifndef CLOCK_MONOTONIC |
82 | # undef EV_USE_MONOTONIC |
243 | # undef EV_USE_MONOTONIC |
83 | # define EV_USE_MONOTONIC 0 |
244 | # define EV_USE_MONOTONIC 0 |
84 | #endif |
245 | #endif |
… | |
… | |
86 | #ifndef CLOCK_REALTIME |
247 | #ifndef CLOCK_REALTIME |
87 | # undef EV_USE_REALTIME |
248 | # undef EV_USE_REALTIME |
88 | # define EV_USE_REALTIME 0 |
249 | # define EV_USE_REALTIME 0 |
89 | #endif |
250 | #endif |
90 | |
251 | |
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252 | #if !EV_STAT_ENABLE |
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253 | # undef EV_USE_INOTIFY |
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254 | # define EV_USE_INOTIFY 0 |
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255 | #endif |
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256 | |
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257 | #if !EV_USE_NANOSLEEP |
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258 | # ifndef _WIN32 |
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259 | # include <sys/select.h> |
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260 | # endif |
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261 | #endif |
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262 | |
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263 | #if EV_USE_INOTIFY |
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264 | # include <sys/inotify.h> |
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265 | #endif |
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266 | |
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267 | #if EV_SELECT_IS_WINSOCKET |
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268 | # include <winsock.h> |
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269 | #endif |
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270 | |
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271 | #if EV_USE_EVENTFD |
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272 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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273 | # include <stdint.h> |
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274 | # ifdef __cplusplus |
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275 | extern "C" { |
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276 | # endif |
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277 | int eventfd (unsigned int initval, int flags); |
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278 | # ifdef __cplusplus |
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279 | } |
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280 | # endif |
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281 | #endif |
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282 | |
91 | /**/ |
283 | /**/ |
92 | |
284 | |
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285 | /* |
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286 | * This is used to avoid floating point rounding problems. |
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287 | * It is added to ev_rt_now when scheduling periodics |
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288 | * to ensure progress, time-wise, even when rounding |
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289 | * errors are against us. |
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290 | * This value is good at least till the year 4000. |
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291 | * Better solutions welcome. |
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292 | */ |
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293 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
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294 | |
93 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
295 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
94 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
296 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
95 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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96 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
297 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
97 | |
298 | |
98 | #include "ev.h" |
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99 | |
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100 | #if __GNUC__ >= 3 |
299 | #if __GNUC__ >= 4 |
101 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
300 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
102 | # define inline inline |
301 | # define noinline __attribute__ ((noinline)) |
103 | #else |
302 | #else |
104 | # define expect(expr,value) (expr) |
303 | # define expect(expr,value) (expr) |
105 | # define inline static |
304 | # define noinline |
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305 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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306 | # define inline |
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307 | # endif |
106 | #endif |
308 | #endif |
107 | |
309 | |
108 | #define expect_false(expr) expect ((expr) != 0, 0) |
310 | #define expect_false(expr) expect ((expr) != 0, 0) |
109 | #define expect_true(expr) expect ((expr) != 0, 1) |
311 | #define expect_true(expr) expect ((expr) != 0, 1) |
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312 | #define inline_size static inline |
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313 | |
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314 | #if EV_MINIMAL |
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315 | # define inline_speed static noinline |
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316 | #else |
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317 | # define inline_speed static inline |
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318 | #endif |
110 | |
319 | |
111 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
320 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
112 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
321 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
113 | |
322 | |
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323 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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324 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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325 | |
114 | typedef struct ev_watcher *W; |
326 | typedef ev_watcher *W; |
115 | typedef struct ev_watcher_list *WL; |
327 | typedef ev_watcher_list *WL; |
116 | typedef struct ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
117 | |
329 | |
118 | static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ |
330 | #define ev_active(w) ((W)(w))->active |
119 | static ev_tstamp rt_now; |
331 | #define ev_at(w) ((WT)(w))->at |
120 | static int method; |
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121 | |
332 | |
122 | static int have_monotonic; /* runtime */ |
333 | #if EV_USE_MONOTONIC |
123 | |
334 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
124 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
335 | /* giving it a reasonably high chance of working on typical architetcures */ |
125 | static void (*method_modify)(EV_P_ int fd, int oev, int nev); |
336 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
126 | static void (*method_poll)(EV_P_ ev_tstamp timeout); |
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127 | |
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128 | static int activecnt; /* number of active events */ |
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129 | |
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130 | #if EV_USE_SELECT |
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131 | static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo; |
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132 | static int vec_max; |
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133 | #endif |
337 | #endif |
134 | |
338 | |
135 | #if EV_USEV_POLL |
339 | #ifdef _WIN32 |
136 | static struct pollfd *polls; |
340 | # include "ev_win32.c" |
137 | static int pollmax, pollcnt; |
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138 | static int *pollidxs; /* maps fds into structure indices */ |
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139 | static int pollidxmax; |
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140 | #endif |
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141 | |
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142 | #if EV_USE_EPOLL |
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143 | static int epoll_fd = -1; |
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144 | |
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145 | static struct epoll_event *events; |
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146 | static int eventmax; |
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147 | #endif |
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148 | |
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149 | #if EV_USE_KQUEUE |
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150 | static int kqueue_fd; |
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151 | static struct kevent *kqueue_changes; |
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152 | static int kqueue_changemax, kqueue_changecnt; |
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153 | static struct kevent *kqueue_events; |
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154 | static int kqueue_eventmax; |
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155 | #endif |
341 | #endif |
156 | |
342 | |
157 | /*****************************************************************************/ |
343 | /*****************************************************************************/ |
158 | |
344 | |
159 | inline ev_tstamp |
345 | static void (*syserr_cb)(const char *msg); |
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346 | |
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347 | void |
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348 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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349 | { |
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350 | syserr_cb = cb; |
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351 | } |
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352 | |
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353 | static void noinline |
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354 | syserr (const char *msg) |
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355 | { |
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356 | if (!msg) |
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357 | msg = "(libev) system error"; |
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358 | |
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359 | if (syserr_cb) |
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360 | syserr_cb (msg); |
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361 | else |
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362 | { |
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363 | perror (msg); |
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364 | abort (); |
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365 | } |
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366 | } |
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367 | |
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368 | static void * |
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369 | ev_realloc_emul (void *ptr, long size) |
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370 | { |
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371 | /* some systems, notably openbsd and darwin, fail to properly |
|
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372 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
373 | * the single unix specification, so work around them here. |
|
|
374 | */ |
|
|
375 | |
|
|
376 | if (size) |
|
|
377 | return realloc (ptr, size); |
|
|
378 | |
|
|
379 | free (ptr); |
|
|
380 | return 0; |
|
|
381 | } |
|
|
382 | |
|
|
383 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
384 | |
|
|
385 | void |
|
|
386 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
387 | { |
|
|
388 | alloc = cb; |
|
|
389 | } |
|
|
390 | |
|
|
391 | inline_speed void * |
|
|
392 | ev_realloc (void *ptr, long size) |
|
|
393 | { |
|
|
394 | ptr = alloc (ptr, size); |
|
|
395 | |
|
|
396 | if (!ptr && size) |
|
|
397 | { |
|
|
398 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
399 | abort (); |
|
|
400 | } |
|
|
401 | |
|
|
402 | return ptr; |
|
|
403 | } |
|
|
404 | |
|
|
405 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
406 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
407 | |
|
|
408 | /*****************************************************************************/ |
|
|
409 | |
|
|
410 | typedef struct |
|
|
411 | { |
|
|
412 | WL head; |
|
|
413 | unsigned char events; |
|
|
414 | unsigned char reify; |
|
|
415 | #if EV_SELECT_IS_WINSOCKET |
|
|
416 | SOCKET handle; |
|
|
417 | #endif |
|
|
418 | } ANFD; |
|
|
419 | |
|
|
420 | typedef struct |
|
|
421 | { |
|
|
422 | W w; |
|
|
423 | int events; |
|
|
424 | } ANPENDING; |
|
|
425 | |
|
|
426 | #if EV_USE_INOTIFY |
|
|
427 | typedef struct |
|
|
428 | { |
|
|
429 | WL head; |
|
|
430 | } ANFS; |
|
|
431 | #endif |
|
|
432 | |
|
|
433 | #if EV_MULTIPLICITY |
|
|
434 | |
|
|
435 | struct ev_loop |
|
|
436 | { |
|
|
437 | ev_tstamp ev_rt_now; |
|
|
438 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
439 | #define VAR(name,decl) decl; |
|
|
440 | #include "ev_vars.h" |
|
|
441 | #undef VAR |
|
|
442 | }; |
|
|
443 | #include "ev_wrap.h" |
|
|
444 | |
|
|
445 | static struct ev_loop default_loop_struct; |
|
|
446 | struct ev_loop *ev_default_loop_ptr; |
|
|
447 | |
|
|
448 | #else |
|
|
449 | |
|
|
450 | ev_tstamp ev_rt_now; |
|
|
451 | #define VAR(name,decl) static decl; |
|
|
452 | #include "ev_vars.h" |
|
|
453 | #undef VAR |
|
|
454 | |
|
|
455 | static int ev_default_loop_ptr; |
|
|
456 | |
|
|
457 | #endif |
|
|
458 | |
|
|
459 | /*****************************************************************************/ |
|
|
460 | |
|
|
461 | ev_tstamp |
160 | ev_time (void) |
462 | ev_time (void) |
161 | { |
463 | { |
162 | #if EV_USE_REALTIME |
464 | #if EV_USE_REALTIME |
163 | struct timespec ts; |
465 | struct timespec ts; |
164 | clock_gettime (CLOCK_REALTIME, &ts); |
466 | clock_gettime (CLOCK_REALTIME, &ts); |
… | |
… | |
168 | gettimeofday (&tv, 0); |
470 | gettimeofday (&tv, 0); |
169 | return tv.tv_sec + tv.tv_usec * 1e-6; |
471 | return tv.tv_sec + tv.tv_usec * 1e-6; |
170 | #endif |
472 | #endif |
171 | } |
473 | } |
172 | |
474 | |
173 | inline ev_tstamp |
475 | ev_tstamp inline_size |
174 | get_clock (void) |
476 | get_clock (void) |
175 | { |
477 | { |
176 | #if EV_USE_MONOTONIC |
478 | #if EV_USE_MONOTONIC |
177 | if (expect_true (have_monotonic)) |
479 | if (expect_true (have_monotonic)) |
178 | { |
480 | { |
… | |
… | |
183 | #endif |
485 | #endif |
184 | |
486 | |
185 | return ev_time (); |
487 | return ev_time (); |
186 | } |
488 | } |
187 | |
489 | |
|
|
490 | #if EV_MULTIPLICITY |
188 | ev_tstamp |
491 | ev_tstamp |
189 | ev_now (EV_P) |
492 | ev_now (EV_P) |
190 | { |
493 | { |
191 | return rt_now; |
494 | return ev_rt_now; |
192 | } |
495 | } |
|
|
496 | #endif |
193 | |
497 | |
194 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
498 | void |
195 | |
499 | ev_sleep (ev_tstamp delay) |
196 | #define array_needsize(base,cur,cnt,init) \ |
500 | { |
197 | if (expect_false ((cnt) > cur)) \ |
501 | if (delay > 0.) |
198 | { \ |
|
|
199 | int newcnt = cur; \ |
|
|
200 | do \ |
|
|
201 | { \ |
|
|
202 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
203 | } \ |
|
|
204 | while ((cnt) > newcnt); \ |
|
|
205 | \ |
|
|
206 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
207 | init (base + cur, newcnt - cur); \ |
|
|
208 | cur = newcnt; \ |
|
|
209 | } |
502 | { |
|
|
503 | #if EV_USE_NANOSLEEP |
|
|
504 | struct timespec ts; |
|
|
505 | |
|
|
506 | ts.tv_sec = (time_t)delay; |
|
|
507 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
508 | |
|
|
509 | nanosleep (&ts, 0); |
|
|
510 | #elif defined(_WIN32) |
|
|
511 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
512 | #else |
|
|
513 | struct timeval tv; |
|
|
514 | |
|
|
515 | tv.tv_sec = (time_t)delay; |
|
|
516 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
517 | |
|
|
518 | select (0, 0, 0, 0, &tv); |
|
|
519 | #endif |
|
|
520 | } |
|
|
521 | } |
210 | |
522 | |
211 | /*****************************************************************************/ |
523 | /*****************************************************************************/ |
212 | |
524 | |
213 | typedef struct |
525 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
214 | { |
|
|
215 | struct ev_watcher_list *head; |
|
|
216 | unsigned char events; |
|
|
217 | unsigned char reify; |
|
|
218 | } ANFD; |
|
|
219 | |
526 | |
220 | static ANFD *anfds; |
527 | int inline_size |
221 | static int anfdmax; |
528 | array_nextsize (int elem, int cur, int cnt) |
|
|
529 | { |
|
|
530 | int ncur = cur + 1; |
222 | |
531 | |
223 | static void |
532 | do |
|
|
533 | ncur <<= 1; |
|
|
534 | while (cnt > ncur); |
|
|
535 | |
|
|
536 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
537 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
538 | { |
|
|
539 | ncur *= elem; |
|
|
540 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
541 | ncur = ncur - sizeof (void *) * 4; |
|
|
542 | ncur /= elem; |
|
|
543 | } |
|
|
544 | |
|
|
545 | return ncur; |
|
|
546 | } |
|
|
547 | |
|
|
548 | static noinline void * |
|
|
549 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
550 | { |
|
|
551 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
552 | return ev_realloc (base, elem * *cur); |
|
|
553 | } |
|
|
554 | |
|
|
555 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
556 | if (expect_false ((cnt) > (cur))) \ |
|
|
557 | { \ |
|
|
558 | int ocur_ = (cur); \ |
|
|
559 | (base) = (type *)array_realloc \ |
|
|
560 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
561 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
562 | } |
|
|
563 | |
|
|
564 | #if 0 |
|
|
565 | #define array_slim(type,stem) \ |
|
|
566 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
567 | { \ |
|
|
568 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
569 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
570 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
571 | } |
|
|
572 | #endif |
|
|
573 | |
|
|
574 | #define array_free(stem, idx) \ |
|
|
575 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
|
|
576 | |
|
|
577 | /*****************************************************************************/ |
|
|
578 | |
|
|
579 | void noinline |
|
|
580 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
581 | { |
|
|
582 | W w_ = (W)w; |
|
|
583 | int pri = ABSPRI (w_); |
|
|
584 | |
|
|
585 | if (expect_false (w_->pending)) |
|
|
586 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
587 | else |
|
|
588 | { |
|
|
589 | w_->pending = ++pendingcnt [pri]; |
|
|
590 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
591 | pendings [pri][w_->pending - 1].w = w_; |
|
|
592 | pendings [pri][w_->pending - 1].events = revents; |
|
|
593 | } |
|
|
594 | } |
|
|
595 | |
|
|
596 | void inline_speed |
|
|
597 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
598 | { |
|
|
599 | int i; |
|
|
600 | |
|
|
601 | for (i = 0; i < eventcnt; ++i) |
|
|
602 | ev_feed_event (EV_A_ events [i], type); |
|
|
603 | } |
|
|
604 | |
|
|
605 | /*****************************************************************************/ |
|
|
606 | |
|
|
607 | void inline_size |
224 | anfds_init (ANFD *base, int count) |
608 | anfds_init (ANFD *base, int count) |
225 | { |
609 | { |
226 | while (count--) |
610 | while (count--) |
227 | { |
611 | { |
228 | base->head = 0; |
612 | base->head = 0; |
… | |
… | |
231 | |
615 | |
232 | ++base; |
616 | ++base; |
233 | } |
617 | } |
234 | } |
618 | } |
235 | |
619 | |
236 | typedef struct |
620 | void inline_speed |
237 | { |
|
|
238 | W w; |
|
|
239 | int events; |
|
|
240 | } ANPENDING; |
|
|
241 | |
|
|
242 | static ANPENDING *pendings [NUMPRI]; |
|
|
243 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
|
|
244 | |
|
|
245 | static void |
|
|
246 | event (EV_P_ W w, int events) |
|
|
247 | { |
|
|
248 | if (w->pending) |
|
|
249 | { |
|
|
250 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
|
|
251 | return; |
|
|
252 | } |
|
|
253 | |
|
|
254 | w->pending = ++pendingcnt [ABSPRI (w)]; |
|
|
255 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
256 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
257 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
258 | } |
|
|
259 | |
|
|
260 | static void |
|
|
261 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
262 | { |
|
|
263 | int i; |
|
|
264 | |
|
|
265 | for (i = 0; i < eventcnt; ++i) |
|
|
266 | event (EV_A_ events [i], type); |
|
|
267 | } |
|
|
268 | |
|
|
269 | static void |
|
|
270 | fd_event (EV_P_ int fd, int events) |
621 | fd_event (EV_P_ int fd, int revents) |
271 | { |
622 | { |
272 | ANFD *anfd = anfds + fd; |
623 | ANFD *anfd = anfds + fd; |
273 | struct ev_io *w; |
624 | ev_io *w; |
274 | |
625 | |
275 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
626 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
276 | { |
627 | { |
277 | int ev = w->events & events; |
628 | int ev = w->events & revents; |
278 | |
629 | |
279 | if (ev) |
630 | if (ev) |
280 | event (EV_A_ (W)w, ev); |
631 | ev_feed_event (EV_A_ (W)w, ev); |
281 | } |
632 | } |
282 | } |
633 | } |
283 | |
634 | |
284 | /*****************************************************************************/ |
635 | void |
|
|
636 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
637 | { |
|
|
638 | if (fd >= 0 && fd < anfdmax) |
|
|
639 | fd_event (EV_A_ fd, revents); |
|
|
640 | } |
285 | |
641 | |
286 | static int *fdchanges; |
642 | void inline_size |
287 | static int fdchangemax, fdchangecnt; |
|
|
288 | |
|
|
289 | static void |
|
|
290 | fd_reify (EV_P) |
643 | fd_reify (EV_P) |
291 | { |
644 | { |
292 | int i; |
645 | int i; |
293 | |
646 | |
294 | for (i = 0; i < fdchangecnt; ++i) |
647 | for (i = 0; i < fdchangecnt; ++i) |
295 | { |
648 | { |
296 | int fd = fdchanges [i]; |
649 | int fd = fdchanges [i]; |
297 | ANFD *anfd = anfds + fd; |
650 | ANFD *anfd = anfds + fd; |
298 | struct ev_io *w; |
651 | ev_io *w; |
299 | |
652 | |
300 | int events = 0; |
653 | unsigned char events = 0; |
301 | |
654 | |
302 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
655 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
303 | events |= w->events; |
656 | events |= (unsigned char)w->events; |
304 | |
657 | |
305 | anfd->reify = 0; |
658 | #if EV_SELECT_IS_WINSOCKET |
306 | |
659 | if (events) |
307 | if (anfd->events != events) |
|
|
308 | { |
660 | { |
309 | method_modify (EV_A_ fd, anfd->events, events); |
661 | unsigned long argp; |
310 | anfd->events = events; |
662 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
663 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
664 | #else |
|
|
665 | anfd->handle = _get_osfhandle (fd); |
|
|
666 | #endif |
|
|
667 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
311 | } |
668 | } |
|
|
669 | #endif |
|
|
670 | |
|
|
671 | { |
|
|
672 | unsigned char o_events = anfd->events; |
|
|
673 | unsigned char o_reify = anfd->reify; |
|
|
674 | |
|
|
675 | anfd->reify = 0; |
|
|
676 | anfd->events = events; |
|
|
677 | |
|
|
678 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
679 | backend_modify (EV_A_ fd, o_events, events); |
|
|
680 | } |
312 | } |
681 | } |
313 | |
682 | |
314 | fdchangecnt = 0; |
683 | fdchangecnt = 0; |
315 | } |
684 | } |
316 | |
685 | |
317 | static void |
686 | void inline_size |
318 | fd_change (EV_P_ int fd) |
687 | fd_change (EV_P_ int fd, int flags) |
319 | { |
688 | { |
320 | if (anfds [fd].reify || fdchangecnt < 0) |
689 | unsigned char reify = anfds [fd].reify; |
321 | return; |
|
|
322 | |
|
|
323 | anfds [fd].reify = 1; |
690 | anfds [fd].reify |= flags; |
324 | |
691 | |
|
|
692 | if (expect_true (!reify)) |
|
|
693 | { |
325 | ++fdchangecnt; |
694 | ++fdchangecnt; |
326 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
695 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
327 | fdchanges [fdchangecnt - 1] = fd; |
696 | fdchanges [fdchangecnt - 1] = fd; |
|
|
697 | } |
328 | } |
698 | } |
329 | |
699 | |
330 | static void |
700 | void inline_speed |
331 | fd_kill (EV_P_ int fd) |
701 | fd_kill (EV_P_ int fd) |
332 | { |
702 | { |
333 | struct ev_io *w; |
703 | ev_io *w; |
334 | |
704 | |
335 | while ((w = (struct ev_io *)anfds [fd].head)) |
705 | while ((w = (ev_io *)anfds [fd].head)) |
336 | { |
706 | { |
337 | ev_io_stop (EV_A_ w); |
707 | ev_io_stop (EV_A_ w); |
338 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
708 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
339 | } |
709 | } |
|
|
710 | } |
|
|
711 | |
|
|
712 | int inline_size |
|
|
713 | fd_valid (int fd) |
|
|
714 | { |
|
|
715 | #ifdef _WIN32 |
|
|
716 | return _get_osfhandle (fd) != -1; |
|
|
717 | #else |
|
|
718 | return fcntl (fd, F_GETFD) != -1; |
|
|
719 | #endif |
340 | } |
720 | } |
341 | |
721 | |
342 | /* called on EBADF to verify fds */ |
722 | /* called on EBADF to verify fds */ |
343 | static void |
723 | static void noinline |
344 | fd_ebadf (EV_P) |
724 | fd_ebadf (EV_P) |
345 | { |
725 | { |
346 | int fd; |
726 | int fd; |
347 | |
727 | |
348 | for (fd = 0; fd < anfdmax; ++fd) |
728 | for (fd = 0; fd < anfdmax; ++fd) |
349 | if (anfds [fd].events) |
729 | if (anfds [fd].events) |
350 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
730 | if (!fd_valid (fd) == -1 && errno == EBADF) |
351 | fd_kill (EV_A_ fd); |
731 | fd_kill (EV_A_ fd); |
352 | } |
732 | } |
353 | |
733 | |
354 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
734 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
355 | static void |
735 | static void noinline |
356 | fd_enomem (EV_P) |
736 | fd_enomem (EV_P) |
357 | { |
737 | { |
358 | int fd = anfdmax; |
738 | int fd; |
359 | |
739 | |
360 | while (fd--) |
740 | for (fd = anfdmax; fd--; ) |
361 | if (anfds [fd].events) |
741 | if (anfds [fd].events) |
362 | { |
742 | { |
363 | close (fd); |
|
|
364 | fd_kill (EV_A_ fd); |
743 | fd_kill (EV_A_ fd); |
365 | return; |
744 | return; |
366 | } |
745 | } |
367 | } |
746 | } |
368 | |
747 | |
|
|
748 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
749 | static void noinline |
|
|
750 | fd_rearm_all (EV_P) |
|
|
751 | { |
|
|
752 | int fd; |
|
|
753 | |
|
|
754 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
755 | if (anfds [fd].events) |
|
|
756 | { |
|
|
757 | anfds [fd].events = 0; |
|
|
758 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
759 | } |
|
|
760 | } |
|
|
761 | |
369 | /*****************************************************************************/ |
762 | /*****************************************************************************/ |
370 | |
763 | |
371 | static struct ev_timer **timers; |
764 | /* |
372 | static int timermax, timercnt; |
765 | * at the moment we allow libev the luxury of two heaps, |
|
|
766 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
767 | * which is more cache-efficient. |
|
|
768 | * the difference is about 5% with 50000+ watchers. |
|
|
769 | */ |
|
|
770 | #define USE_4HEAP !EV_MINIMAL |
|
|
771 | #define USE_4HEAP 1/* they do not work corretcly */ |
|
|
772 | #if USE_4HEAP |
373 | |
773 | |
374 | static struct ev_periodic **periodics; |
774 | #define DHEAP 4 |
375 | static int periodicmax, periodiccnt; |
775 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
376 | |
776 | |
377 | static void |
777 | /* towards the root */ |
|
|
778 | void inline_speed |
378 | upheap (WT *timers, int k) |
779 | upheap (WT *heap, int k) |
379 | { |
780 | { |
380 | WT w = timers [k]; |
781 | WT w = heap [k]; |
381 | |
782 | |
382 | while (k && timers [k >> 1]->at > w->at) |
783 | for (;;) |
383 | { |
|
|
384 | timers [k] = timers [k >> 1]; |
|
|
385 | timers [k]->active = k + 1; |
|
|
386 | k >>= 1; |
|
|
387 | } |
784 | { |
|
|
785 | int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0; |
388 | |
786 | |
389 | timers [k] = w; |
787 | if (p == k || heap [p]->at <= w->at) |
390 | timers [k]->active = k + 1; |
|
|
391 | |
|
|
392 | } |
|
|
393 | |
|
|
394 | static void |
|
|
395 | downheap (WT *timers, int N, int k) |
|
|
396 | { |
|
|
397 | WT w = timers [k]; |
|
|
398 | |
|
|
399 | while (k < (N >> 1)) |
|
|
400 | { |
|
|
401 | int j = k << 1; |
|
|
402 | |
|
|
403 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
404 | ++j; |
|
|
405 | |
|
|
406 | if (w->at <= timers [j]->at) |
|
|
407 | break; |
788 | break; |
408 | |
789 | |
409 | timers [k] = timers [j]; |
790 | heap [k] = heap [p]; |
410 | timers [k]->active = k + 1; |
791 | ev_active (heap [k]) = k; |
411 | k = j; |
792 | k = p; |
|
|
793 | } |
|
|
794 | |
|
|
795 | heap [k] = w; |
|
|
796 | ev_active (heap [k]) = k; |
|
|
797 | } |
|
|
798 | |
|
|
799 | /* away from the root */ |
|
|
800 | void inline_speed |
|
|
801 | downheap (WT *heap, int N, int k) |
|
|
802 | { |
|
|
803 | WT w = heap [k]; |
|
|
804 | WT *E = heap + N + HEAP0; |
|
|
805 | |
|
|
806 | for (;;) |
412 | } |
807 | { |
|
|
808 | ev_tstamp minat; |
|
|
809 | WT *minpos; |
|
|
810 | WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0; |
413 | |
811 | |
|
|
812 | // find minimum child |
|
|
813 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
814 | { |
|
|
815 | /* fast path */ |
|
|
816 | (minpos = pos + 0), (minat = (*minpos)->at); |
|
|
817 | if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); |
|
|
818 | if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); |
|
|
819 | if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); |
|
|
820 | } |
|
|
821 | else |
|
|
822 | { |
|
|
823 | /* slow path */ |
|
|
824 | if (pos >= E) |
|
|
825 | break; |
|
|
826 | (minpos = pos + 0), (minat = (*minpos)->at); |
|
|
827 | if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); |
|
|
828 | if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); |
|
|
829 | if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); |
|
|
830 | } |
|
|
831 | |
|
|
832 | if (w->at <= minat) |
|
|
833 | break; |
|
|
834 | |
|
|
835 | ev_active (*minpos) = k; |
|
|
836 | heap [k] = *minpos; |
|
|
837 | |
|
|
838 | k = minpos - heap; |
|
|
839 | } |
|
|
840 | |
414 | timers [k] = w; |
841 | heap [k] = w; |
415 | timers [k]->active = k + 1; |
842 | ev_active (heap [k]) = k; |
|
|
843 | } |
|
|
844 | |
|
|
845 | #else // 4HEAP |
|
|
846 | |
|
|
847 | #define HEAP0 1 |
|
|
848 | |
|
|
849 | /* towards the root */ |
|
|
850 | void inline_speed |
|
|
851 | upheap (WT *heap, int k) |
|
|
852 | { |
|
|
853 | WT w = heap [k]; |
|
|
854 | |
|
|
855 | for (;;) |
|
|
856 | { |
|
|
857 | int p = k >> 1; |
|
|
858 | |
|
|
859 | /* maybe we could use a dummy element at heap [0]? */ |
|
|
860 | if (!p || heap [p]->at <= w->at) |
|
|
861 | break; |
|
|
862 | |
|
|
863 | heap [k] = heap [p]; |
|
|
864 | ev_active (heap [k]) = k; |
|
|
865 | k = p; |
|
|
866 | } |
|
|
867 | |
|
|
868 | heap [k] = w; |
|
|
869 | ev_active (heap [k]) = k; |
|
|
870 | } |
|
|
871 | |
|
|
872 | /* away from the root */ |
|
|
873 | void inline_speed |
|
|
874 | downheap (WT *heap, int N, int k) |
|
|
875 | { |
|
|
876 | WT w = heap [k]; |
|
|
877 | |
|
|
878 | for (;;) |
|
|
879 | { |
|
|
880 | int c = k << 1; |
|
|
881 | |
|
|
882 | if (c > N) |
|
|
883 | break; |
|
|
884 | |
|
|
885 | c += c + 1 < N && heap [c]->at > heap [c + 1]->at |
|
|
886 | ? 1 : 0; |
|
|
887 | |
|
|
888 | if (w->at <= heap [c]->at) |
|
|
889 | break; |
|
|
890 | |
|
|
891 | heap [k] = heap [c]; |
|
|
892 | ((W)heap [k])->active = k; |
|
|
893 | |
|
|
894 | k = c; |
|
|
895 | } |
|
|
896 | |
|
|
897 | heap [k] = w; |
|
|
898 | ev_active (heap [k]) = k; |
|
|
899 | } |
|
|
900 | #endif |
|
|
901 | |
|
|
902 | void inline_size |
|
|
903 | adjustheap (WT *heap, int N, int k) |
|
|
904 | { |
|
|
905 | upheap (heap, k); |
|
|
906 | downheap (heap, N, k); |
416 | } |
907 | } |
417 | |
908 | |
418 | /*****************************************************************************/ |
909 | /*****************************************************************************/ |
419 | |
910 | |
420 | typedef struct |
911 | typedef struct |
421 | { |
912 | { |
422 | struct ev_watcher_list *head; |
913 | WL head; |
423 | sig_atomic_t volatile gotsig; |
914 | EV_ATOMIC_T gotsig; |
424 | } ANSIG; |
915 | } ANSIG; |
425 | |
916 | |
426 | static ANSIG *signals; |
917 | static ANSIG *signals; |
427 | static int signalmax; |
918 | static int signalmax; |
428 | |
919 | |
429 | static int sigpipe [2]; |
920 | static EV_ATOMIC_T gotsig; |
430 | static sig_atomic_t volatile gotsig; |
|
|
431 | static struct ev_io sigev; |
|
|
432 | |
921 | |
433 | static void |
922 | void inline_size |
434 | signals_init (ANSIG *base, int count) |
923 | signals_init (ANSIG *base, int count) |
435 | { |
924 | { |
436 | while (count--) |
925 | while (count--) |
437 | { |
926 | { |
438 | base->head = 0; |
927 | base->head = 0; |
… | |
… | |
440 | |
929 | |
441 | ++base; |
930 | ++base; |
442 | } |
931 | } |
443 | } |
932 | } |
444 | |
933 | |
|
|
934 | /*****************************************************************************/ |
|
|
935 | |
|
|
936 | void inline_speed |
|
|
937 | fd_intern (int fd) |
|
|
938 | { |
|
|
939 | #ifdef _WIN32 |
|
|
940 | int arg = 1; |
|
|
941 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
942 | #else |
|
|
943 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
944 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
945 | #endif |
|
|
946 | } |
|
|
947 | |
|
|
948 | static void noinline |
|
|
949 | evpipe_init (EV_P) |
|
|
950 | { |
|
|
951 | if (!ev_is_active (&pipeev)) |
|
|
952 | { |
|
|
953 | #if EV_USE_EVENTFD |
|
|
954 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
955 | { |
|
|
956 | evpipe [0] = -1; |
|
|
957 | fd_intern (evfd); |
|
|
958 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
959 | } |
|
|
960 | else |
|
|
961 | #endif |
|
|
962 | { |
|
|
963 | while (pipe (evpipe)) |
|
|
964 | syserr ("(libev) error creating signal/async pipe"); |
|
|
965 | |
|
|
966 | fd_intern (evpipe [0]); |
|
|
967 | fd_intern (evpipe [1]); |
|
|
968 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
969 | } |
|
|
970 | |
|
|
971 | ev_io_start (EV_A_ &pipeev); |
|
|
972 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
973 | } |
|
|
974 | } |
|
|
975 | |
|
|
976 | void inline_size |
|
|
977 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
978 | { |
|
|
979 | if (!*flag) |
|
|
980 | { |
|
|
981 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
982 | |
|
|
983 | *flag = 1; |
|
|
984 | |
|
|
985 | #if EV_USE_EVENTFD |
|
|
986 | if (evfd >= 0) |
|
|
987 | { |
|
|
988 | uint64_t counter = 1; |
|
|
989 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
990 | } |
|
|
991 | else |
|
|
992 | #endif |
|
|
993 | write (evpipe [1], &old_errno, 1); |
|
|
994 | |
|
|
995 | errno = old_errno; |
|
|
996 | } |
|
|
997 | } |
|
|
998 | |
445 | static void |
999 | static void |
|
|
1000 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1001 | { |
|
|
1002 | #if EV_USE_EVENTFD |
|
|
1003 | if (evfd >= 0) |
|
|
1004 | { |
|
|
1005 | uint64_t counter; |
|
|
1006 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1007 | } |
|
|
1008 | else |
|
|
1009 | #endif |
|
|
1010 | { |
|
|
1011 | char dummy; |
|
|
1012 | read (evpipe [0], &dummy, 1); |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1016 | { |
|
|
1017 | int signum; |
|
|
1018 | gotsig = 0; |
|
|
1019 | |
|
|
1020 | for (signum = signalmax; signum--; ) |
|
|
1021 | if (signals [signum].gotsig) |
|
|
1022 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1023 | } |
|
|
1024 | |
|
|
1025 | #if EV_ASYNC_ENABLE |
|
|
1026 | if (gotasync) |
|
|
1027 | { |
|
|
1028 | int i; |
|
|
1029 | gotasync = 0; |
|
|
1030 | |
|
|
1031 | for (i = asynccnt; i--; ) |
|
|
1032 | if (asyncs [i]->sent) |
|
|
1033 | { |
|
|
1034 | asyncs [i]->sent = 0; |
|
|
1035 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1036 | } |
|
|
1037 | } |
|
|
1038 | #endif |
|
|
1039 | } |
|
|
1040 | |
|
|
1041 | /*****************************************************************************/ |
|
|
1042 | |
|
|
1043 | static void |
446 | sighandler (int signum) |
1044 | ev_sighandler (int signum) |
447 | { |
1045 | { |
|
|
1046 | #if EV_MULTIPLICITY |
|
|
1047 | struct ev_loop *loop = &default_loop_struct; |
|
|
1048 | #endif |
|
|
1049 | |
|
|
1050 | #if _WIN32 |
|
|
1051 | signal (signum, ev_sighandler); |
|
|
1052 | #endif |
|
|
1053 | |
448 | signals [signum - 1].gotsig = 1; |
1054 | signals [signum - 1].gotsig = 1; |
449 | |
1055 | evpipe_write (EV_A_ &gotsig); |
450 | if (!gotsig) |
|
|
451 | { |
|
|
452 | int old_errno = errno; |
|
|
453 | gotsig = 1; |
|
|
454 | write (sigpipe [1], &signum, 1); |
|
|
455 | errno = old_errno; |
|
|
456 | } |
|
|
457 | } |
1056 | } |
458 | |
1057 | |
459 | static void |
1058 | void noinline |
460 | sigcb (EV_P_ struct ev_io *iow, int revents) |
1059 | ev_feed_signal_event (EV_P_ int signum) |
461 | { |
1060 | { |
462 | struct ev_watcher_list *w; |
1061 | WL w; |
|
|
1062 | |
|
|
1063 | #if EV_MULTIPLICITY |
|
|
1064 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1065 | #endif |
|
|
1066 | |
463 | int signum; |
1067 | --signum; |
464 | |
1068 | |
465 | read (sigpipe [0], &revents, 1); |
1069 | if (signum < 0 || signum >= signalmax) |
466 | gotsig = 0; |
1070 | return; |
467 | |
1071 | |
468 | for (signum = signalmax; signum--; ) |
|
|
469 | if (signals [signum].gotsig) |
|
|
470 | { |
|
|
471 | signals [signum].gotsig = 0; |
1072 | signals [signum].gotsig = 0; |
472 | |
1073 | |
473 | for (w = signals [signum].head; w; w = w->next) |
1074 | for (w = signals [signum].head; w; w = w->next) |
474 | event (EV_A_ (W)w, EV_SIGNAL); |
1075 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
475 | } |
|
|
476 | } |
|
|
477 | |
|
|
478 | static void |
|
|
479 | siginit (EV_P) |
|
|
480 | { |
|
|
481 | #ifndef WIN32 |
|
|
482 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
483 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
484 | |
|
|
485 | /* rather than sort out wether we really need nb, set it */ |
|
|
486 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
487 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
488 | #endif |
|
|
489 | |
|
|
490 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
491 | ev_io_start (&sigev); |
|
|
492 | } |
1076 | } |
493 | |
1077 | |
494 | /*****************************************************************************/ |
1078 | /*****************************************************************************/ |
495 | |
1079 | |
496 | static struct ev_idle **idles; |
1080 | static WL childs [EV_PID_HASHSIZE]; |
497 | static int idlemax, idlecnt; |
|
|
498 | |
1081 | |
499 | static struct ev_prepare **prepares; |
|
|
500 | static int preparemax, preparecnt; |
|
|
501 | |
|
|
502 | static struct ev_check **checks; |
|
|
503 | static int checkmax, checkcnt; |
|
|
504 | |
|
|
505 | /*****************************************************************************/ |
|
|
506 | |
|
|
507 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
508 | static struct ev_signal childev; |
|
|
509 | |
|
|
510 | #ifndef WIN32 |
1082 | #ifndef _WIN32 |
|
|
1083 | |
|
|
1084 | static ev_signal childev; |
|
|
1085 | |
|
|
1086 | #ifndef WIFCONTINUED |
|
|
1087 | # define WIFCONTINUED(status) 0 |
|
|
1088 | #endif |
|
|
1089 | |
|
|
1090 | void inline_speed |
|
|
1091 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1092 | { |
|
|
1093 | ev_child *w; |
|
|
1094 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1095 | |
|
|
1096 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1097 | { |
|
|
1098 | if ((w->pid == pid || !w->pid) |
|
|
1099 | && (!traced || (w->flags & 1))) |
|
|
1100 | { |
|
|
1101 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1102 | w->rpid = pid; |
|
|
1103 | w->rstatus = status; |
|
|
1104 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1105 | } |
|
|
1106 | } |
|
|
1107 | } |
511 | |
1108 | |
512 | #ifndef WCONTINUED |
1109 | #ifndef WCONTINUED |
513 | # define WCONTINUED 0 |
1110 | # define WCONTINUED 0 |
514 | #endif |
1111 | #endif |
515 | |
1112 | |
516 | static void |
1113 | static void |
517 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
518 | { |
|
|
519 | struct ev_child *w; |
|
|
520 | |
|
|
521 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
522 | if (w->pid == pid || !w->pid) |
|
|
523 | { |
|
|
524 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
525 | w->rpid = pid; |
|
|
526 | w->rstatus = status; |
|
|
527 | event (EV_A_ (W)w, EV_CHILD); |
|
|
528 | } |
|
|
529 | } |
|
|
530 | |
|
|
531 | static void |
|
|
532 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1114 | childcb (EV_P_ ev_signal *sw, int revents) |
533 | { |
1115 | { |
534 | int pid, status; |
1116 | int pid, status; |
535 | |
1117 | |
|
|
1118 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
536 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1119 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
537 | { |
1120 | if (!WCONTINUED |
|
|
1121 | || errno != EINVAL |
|
|
1122 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1123 | return; |
|
|
1124 | |
538 | /* make sure we are called again until all childs have been reaped */ |
1125 | /* make sure we are called again until all children have been reaped */ |
|
|
1126 | /* we need to do it this way so that the callback gets called before we continue */ |
539 | event (EV_A_ (W)sw, EV_SIGNAL); |
1127 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
540 | |
1128 | |
541 | child_reap (EV_A_ sw, pid, pid, status); |
1129 | child_reap (EV_A_ pid, pid, status); |
|
|
1130 | if (EV_PID_HASHSIZE > 1) |
542 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1131 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
543 | } |
|
|
544 | } |
1132 | } |
545 | |
1133 | |
546 | #endif |
1134 | #endif |
547 | |
1135 | |
548 | /*****************************************************************************/ |
1136 | /*****************************************************************************/ |
549 | |
1137 | |
|
|
1138 | #if EV_USE_PORT |
|
|
1139 | # include "ev_port.c" |
|
|
1140 | #endif |
550 | #if EV_USE_KQUEUE |
1141 | #if EV_USE_KQUEUE |
551 | # include "ev_kqueue.c" |
1142 | # include "ev_kqueue.c" |
552 | #endif |
1143 | #endif |
553 | #if EV_USE_EPOLL |
1144 | #if EV_USE_EPOLL |
554 | # include "ev_epoll.c" |
1145 | # include "ev_epoll.c" |
555 | #endif |
1146 | #endif |
556 | #if EV_USEV_POLL |
1147 | #if EV_USE_POLL |
557 | # include "ev_poll.c" |
1148 | # include "ev_poll.c" |
558 | #endif |
1149 | #endif |
559 | #if EV_USE_SELECT |
1150 | #if EV_USE_SELECT |
560 | # include "ev_select.c" |
1151 | # include "ev_select.c" |
561 | #endif |
1152 | #endif |
… | |
… | |
571 | { |
1162 | { |
572 | return EV_VERSION_MINOR; |
1163 | return EV_VERSION_MINOR; |
573 | } |
1164 | } |
574 | |
1165 | |
575 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1166 | /* return true if we are running with elevated privileges and should ignore env variables */ |
576 | static int |
1167 | int inline_size |
577 | enable_secure (void) |
1168 | enable_secure (void) |
578 | { |
1169 | { |
579 | #ifdef WIN32 |
1170 | #ifdef _WIN32 |
580 | return 0; |
1171 | return 0; |
581 | #else |
1172 | #else |
582 | return getuid () != geteuid () |
1173 | return getuid () != geteuid () |
583 | || getgid () != getegid (); |
1174 | || getgid () != getegid (); |
584 | #endif |
1175 | #endif |
585 | } |
1176 | } |
586 | |
1177 | |
587 | int |
1178 | unsigned int |
588 | ev_method (EV_P) |
1179 | ev_supported_backends (void) |
589 | { |
1180 | { |
590 | return method; |
1181 | unsigned int flags = 0; |
591 | } |
|
|
592 | |
1182 | |
593 | int |
1183 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
594 | ev_init (EV_P_ int methods) |
1184 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1185 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1186 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1187 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1188 | |
|
|
1189 | return flags; |
|
|
1190 | } |
|
|
1191 | |
|
|
1192 | unsigned int |
|
|
1193 | ev_recommended_backends (void) |
595 | { |
1194 | { |
596 | if (!method) |
1195 | unsigned int flags = ev_supported_backends (); |
|
|
1196 | |
|
|
1197 | #ifndef __NetBSD__ |
|
|
1198 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1199 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1200 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1201 | #endif |
|
|
1202 | #ifdef __APPLE__ |
|
|
1203 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1204 | flags &= ~EVBACKEND_POLL; |
|
|
1205 | #endif |
|
|
1206 | |
|
|
1207 | return flags; |
|
|
1208 | } |
|
|
1209 | |
|
|
1210 | unsigned int |
|
|
1211 | ev_embeddable_backends (void) |
|
|
1212 | { |
|
|
1213 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1214 | |
|
|
1215 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1216 | /* please fix it and tell me how to detect the fix */ |
|
|
1217 | flags &= ~EVBACKEND_EPOLL; |
|
|
1218 | |
|
|
1219 | return flags; |
|
|
1220 | } |
|
|
1221 | |
|
|
1222 | unsigned int |
|
|
1223 | ev_backend (EV_P) |
|
|
1224 | { |
|
|
1225 | return backend; |
|
|
1226 | } |
|
|
1227 | |
|
|
1228 | unsigned int |
|
|
1229 | ev_loop_count (EV_P) |
|
|
1230 | { |
|
|
1231 | return loop_count; |
|
|
1232 | } |
|
|
1233 | |
|
|
1234 | void |
|
|
1235 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1236 | { |
|
|
1237 | io_blocktime = interval; |
|
|
1238 | } |
|
|
1239 | |
|
|
1240 | void |
|
|
1241 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1242 | { |
|
|
1243 | timeout_blocktime = interval; |
|
|
1244 | } |
|
|
1245 | |
|
|
1246 | static void noinline |
|
|
1247 | loop_init (EV_P_ unsigned int flags) |
|
|
1248 | { |
|
|
1249 | if (!backend) |
597 | { |
1250 | { |
598 | #if EV_USE_MONOTONIC |
1251 | #if EV_USE_MONOTONIC |
599 | { |
1252 | { |
600 | struct timespec ts; |
1253 | struct timespec ts; |
601 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1254 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
602 | have_monotonic = 1; |
1255 | have_monotonic = 1; |
603 | } |
1256 | } |
604 | #endif |
1257 | #endif |
605 | |
1258 | |
606 | rt_now = ev_time (); |
1259 | ev_rt_now = ev_time (); |
607 | mn_now = get_clock (); |
1260 | mn_now = get_clock (); |
608 | now_floor = mn_now; |
1261 | now_floor = mn_now; |
609 | diff = rt_now - mn_now; |
1262 | rtmn_diff = ev_rt_now - mn_now; |
610 | |
1263 | |
611 | if (pipe (sigpipe)) |
1264 | io_blocktime = 0.; |
612 | return 0; |
1265 | timeout_blocktime = 0.; |
|
|
1266 | backend = 0; |
|
|
1267 | backend_fd = -1; |
|
|
1268 | gotasync = 0; |
|
|
1269 | #if EV_USE_INOTIFY |
|
|
1270 | fs_fd = -2; |
|
|
1271 | #endif |
613 | |
1272 | |
614 | if (methods == EVMETHOD_AUTO) |
1273 | /* pid check not overridable via env */ |
615 | if (!enable_secure () && getenv ("LIBmethodS")) |
1274 | #ifndef _WIN32 |
616 | methods = atoi (getenv ("LIBmethodS")); |
1275 | if (flags & EVFLAG_FORKCHECK) |
617 | else |
1276 | curpid = getpid (); |
618 | methods = EVMETHOD_ANY; |
1277 | #endif |
619 | |
1278 | |
620 | method = 0; |
1279 | if (!(flags & EVFLAG_NOENV) |
|
|
1280 | && !enable_secure () |
|
|
1281 | && getenv ("LIBEV_FLAGS")) |
|
|
1282 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1283 | |
|
|
1284 | if (!(flags & 0x0000ffffU)) |
|
|
1285 | flags |= ev_recommended_backends (); |
|
|
1286 | |
|
|
1287 | #if EV_USE_PORT |
|
|
1288 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1289 | #endif |
621 | #if EV_USE_KQUEUE |
1290 | #if EV_USE_KQUEUE |
622 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
1291 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
623 | #endif |
1292 | #endif |
624 | #if EV_USE_EPOLL |
1293 | #if EV_USE_EPOLL |
625 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
1294 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
626 | #endif |
1295 | #endif |
627 | #if EV_USEV_POLL |
1296 | #if EV_USE_POLL |
628 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
1297 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
629 | #endif |
1298 | #endif |
630 | #if EV_USE_SELECT |
1299 | #if EV_USE_SELECT |
631 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
1300 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
632 | #endif |
1301 | #endif |
633 | |
1302 | |
634 | if (method) |
1303 | ev_init (&pipeev, pipecb); |
|
|
1304 | ev_set_priority (&pipeev, EV_MAXPRI); |
|
|
1305 | } |
|
|
1306 | } |
|
|
1307 | |
|
|
1308 | static void noinline |
|
|
1309 | loop_destroy (EV_P) |
|
|
1310 | { |
|
|
1311 | int i; |
|
|
1312 | |
|
|
1313 | if (ev_is_active (&pipeev)) |
|
|
1314 | { |
|
|
1315 | ev_ref (EV_A); /* signal watcher */ |
|
|
1316 | ev_io_stop (EV_A_ &pipeev); |
|
|
1317 | |
|
|
1318 | #if EV_USE_EVENTFD |
|
|
1319 | if (evfd >= 0) |
|
|
1320 | close (evfd); |
|
|
1321 | #endif |
|
|
1322 | |
|
|
1323 | if (evpipe [0] >= 0) |
635 | { |
1324 | { |
636 | ev_watcher_init (&sigev, sigcb); |
1325 | close (evpipe [0]); |
637 | ev_set_priority (&sigev, EV_MAXPRI); |
1326 | close (evpipe [1]); |
|
|
1327 | } |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | #if EV_USE_INOTIFY |
|
|
1331 | if (fs_fd >= 0) |
|
|
1332 | close (fs_fd); |
|
|
1333 | #endif |
|
|
1334 | |
|
|
1335 | if (backend_fd >= 0) |
|
|
1336 | close (backend_fd); |
|
|
1337 | |
|
|
1338 | #if EV_USE_PORT |
|
|
1339 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1340 | #endif |
|
|
1341 | #if EV_USE_KQUEUE |
|
|
1342 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1343 | #endif |
|
|
1344 | #if EV_USE_EPOLL |
|
|
1345 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1346 | #endif |
|
|
1347 | #if EV_USE_POLL |
|
|
1348 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1349 | #endif |
|
|
1350 | #if EV_USE_SELECT |
|
|
1351 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1352 | #endif |
|
|
1353 | |
|
|
1354 | for (i = NUMPRI; i--; ) |
|
|
1355 | { |
|
|
1356 | array_free (pending, [i]); |
|
|
1357 | #if EV_IDLE_ENABLE |
|
|
1358 | array_free (idle, [i]); |
|
|
1359 | #endif |
|
|
1360 | } |
|
|
1361 | |
|
|
1362 | ev_free (anfds); anfdmax = 0; |
|
|
1363 | |
|
|
1364 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1365 | array_free (fdchange, EMPTY); |
|
|
1366 | array_free (timer, EMPTY); |
|
|
1367 | #if EV_PERIODIC_ENABLE |
|
|
1368 | array_free (periodic, EMPTY); |
|
|
1369 | #endif |
|
|
1370 | #if EV_FORK_ENABLE |
|
|
1371 | array_free (fork, EMPTY); |
|
|
1372 | #endif |
|
|
1373 | array_free (prepare, EMPTY); |
|
|
1374 | array_free (check, EMPTY); |
|
|
1375 | #if EV_ASYNC_ENABLE |
|
|
1376 | array_free (async, EMPTY); |
|
|
1377 | #endif |
|
|
1378 | |
|
|
1379 | backend = 0; |
|
|
1380 | } |
|
|
1381 | |
|
|
1382 | #if EV_USE_INOTIFY |
|
|
1383 | void inline_size infy_fork (EV_P); |
|
|
1384 | #endif |
|
|
1385 | |
|
|
1386 | void inline_size |
|
|
1387 | loop_fork (EV_P) |
|
|
1388 | { |
|
|
1389 | #if EV_USE_PORT |
|
|
1390 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1391 | #endif |
|
|
1392 | #if EV_USE_KQUEUE |
|
|
1393 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1394 | #endif |
|
|
1395 | #if EV_USE_EPOLL |
|
|
1396 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1397 | #endif |
|
|
1398 | #if EV_USE_INOTIFY |
|
|
1399 | infy_fork (EV_A); |
|
|
1400 | #endif |
|
|
1401 | |
|
|
1402 | if (ev_is_active (&pipeev)) |
|
|
1403 | { |
|
|
1404 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1405 | /* while we modify the fd vars */ |
|
|
1406 | gotsig = 1; |
|
|
1407 | #if EV_ASYNC_ENABLE |
|
|
1408 | gotasync = 1; |
|
|
1409 | #endif |
|
|
1410 | |
|
|
1411 | ev_ref (EV_A); |
|
|
1412 | ev_io_stop (EV_A_ &pipeev); |
|
|
1413 | |
|
|
1414 | #if EV_USE_EVENTFD |
|
|
1415 | if (evfd >= 0) |
|
|
1416 | close (evfd); |
|
|
1417 | #endif |
|
|
1418 | |
|
|
1419 | if (evpipe [0] >= 0) |
|
|
1420 | { |
|
|
1421 | close (evpipe [0]); |
|
|
1422 | close (evpipe [1]); |
|
|
1423 | } |
|
|
1424 | |
638 | siginit (EV_A); |
1425 | evpipe_init (EV_A); |
|
|
1426 | /* now iterate over everything, in case we missed something */ |
|
|
1427 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1428 | } |
639 | |
1429 | |
|
|
1430 | postfork = 0; |
|
|
1431 | } |
|
|
1432 | |
|
|
1433 | #if EV_MULTIPLICITY |
|
|
1434 | struct ev_loop * |
|
|
1435 | ev_loop_new (unsigned int flags) |
|
|
1436 | { |
|
|
1437 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1438 | |
|
|
1439 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1440 | |
|
|
1441 | loop_init (EV_A_ flags); |
|
|
1442 | |
|
|
1443 | if (ev_backend (EV_A)) |
|
|
1444 | return loop; |
|
|
1445 | |
|
|
1446 | return 0; |
|
|
1447 | } |
|
|
1448 | |
|
|
1449 | void |
|
|
1450 | ev_loop_destroy (EV_P) |
|
|
1451 | { |
|
|
1452 | loop_destroy (EV_A); |
|
|
1453 | ev_free (loop); |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | void |
|
|
1457 | ev_loop_fork (EV_P) |
|
|
1458 | { |
|
|
1459 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1460 | } |
|
|
1461 | #endif |
|
|
1462 | |
|
|
1463 | #if EV_MULTIPLICITY |
|
|
1464 | struct ev_loop * |
|
|
1465 | ev_default_loop_init (unsigned int flags) |
|
|
1466 | #else |
|
|
1467 | int |
|
|
1468 | ev_default_loop (unsigned int flags) |
|
|
1469 | #endif |
|
|
1470 | { |
|
|
1471 | if (!ev_default_loop_ptr) |
|
|
1472 | { |
|
|
1473 | #if EV_MULTIPLICITY |
|
|
1474 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1475 | #else |
|
|
1476 | ev_default_loop_ptr = 1; |
|
|
1477 | #endif |
|
|
1478 | |
|
|
1479 | loop_init (EV_A_ flags); |
|
|
1480 | |
|
|
1481 | if (ev_backend (EV_A)) |
|
|
1482 | { |
640 | #ifndef WIN32 |
1483 | #ifndef _WIN32 |
641 | ev_signal_init (&childev, childcb, SIGCHLD); |
1484 | ev_signal_init (&childev, childcb, SIGCHLD); |
642 | ev_set_priority (&childev, EV_MAXPRI); |
1485 | ev_set_priority (&childev, EV_MAXPRI); |
643 | ev_signal_start (EV_A_ &childev); |
1486 | ev_signal_start (EV_A_ &childev); |
|
|
1487 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
644 | #endif |
1488 | #endif |
645 | } |
1489 | } |
|
|
1490 | else |
|
|
1491 | ev_default_loop_ptr = 0; |
646 | } |
1492 | } |
647 | |
1493 | |
648 | return method; |
1494 | return ev_default_loop_ptr; |
|
|
1495 | } |
|
|
1496 | |
|
|
1497 | void |
|
|
1498 | ev_default_destroy (void) |
|
|
1499 | { |
|
|
1500 | #if EV_MULTIPLICITY |
|
|
1501 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1502 | #endif |
|
|
1503 | |
|
|
1504 | #ifndef _WIN32 |
|
|
1505 | ev_ref (EV_A); /* child watcher */ |
|
|
1506 | ev_signal_stop (EV_A_ &childev); |
|
|
1507 | #endif |
|
|
1508 | |
|
|
1509 | loop_destroy (EV_A); |
|
|
1510 | } |
|
|
1511 | |
|
|
1512 | void |
|
|
1513 | ev_default_fork (void) |
|
|
1514 | { |
|
|
1515 | #if EV_MULTIPLICITY |
|
|
1516 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1517 | #endif |
|
|
1518 | |
|
|
1519 | if (backend) |
|
|
1520 | postfork = 1; /* must be in line with ev_loop_fork */ |
649 | } |
1521 | } |
650 | |
1522 | |
651 | /*****************************************************************************/ |
1523 | /*****************************************************************************/ |
652 | |
1524 | |
653 | void |
1525 | void |
654 | ev_fork_prepare (void) |
1526 | ev_invoke (EV_P_ void *w, int revents) |
655 | { |
1527 | { |
656 | /* nop */ |
1528 | EV_CB_INVOKE ((W)w, revents); |
657 | } |
1529 | } |
658 | |
1530 | |
659 | void |
1531 | void inline_speed |
660 | ev_fork_parent (void) |
|
|
661 | { |
|
|
662 | /* nop */ |
|
|
663 | } |
|
|
664 | |
|
|
665 | void |
|
|
666 | ev_fork_child (void) |
|
|
667 | { |
|
|
668 | #if EV_USE_EPOLL |
|
|
669 | if (method == EVMETHOD_EPOLL) |
|
|
670 | epoll_postfork_child (); |
|
|
671 | #endif |
|
|
672 | |
|
|
673 | ev_io_stop (&sigev); |
|
|
674 | close (sigpipe [0]); |
|
|
675 | close (sigpipe [1]); |
|
|
676 | pipe (sigpipe); |
|
|
677 | siginit (); |
|
|
678 | } |
|
|
679 | |
|
|
680 | /*****************************************************************************/ |
|
|
681 | |
|
|
682 | static void |
|
|
683 | call_pending (EV_P) |
1532 | call_pending (EV_P) |
684 | { |
1533 | { |
685 | int pri; |
1534 | int pri; |
686 | |
1535 | |
687 | for (pri = NUMPRI; pri--; ) |
1536 | for (pri = NUMPRI; pri--; ) |
688 | while (pendingcnt [pri]) |
1537 | while (pendingcnt [pri]) |
689 | { |
1538 | { |
690 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1539 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
691 | |
1540 | |
692 | if (p->w) |
1541 | if (expect_true (p->w)) |
693 | { |
1542 | { |
|
|
1543 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1544 | |
694 | p->w->pending = 0; |
1545 | p->w->pending = 0; |
695 | p->w->cb (EV_A_ p->w, p->events); |
1546 | EV_CB_INVOKE (p->w, p->events); |
696 | } |
1547 | } |
697 | } |
1548 | } |
698 | } |
1549 | } |
699 | |
1550 | |
700 | static void |
1551 | #if EV_IDLE_ENABLE |
|
|
1552 | void inline_size |
|
|
1553 | idle_reify (EV_P) |
|
|
1554 | { |
|
|
1555 | if (expect_false (idleall)) |
|
|
1556 | { |
|
|
1557 | int pri; |
|
|
1558 | |
|
|
1559 | for (pri = NUMPRI; pri--; ) |
|
|
1560 | { |
|
|
1561 | if (pendingcnt [pri]) |
|
|
1562 | break; |
|
|
1563 | |
|
|
1564 | if (idlecnt [pri]) |
|
|
1565 | { |
|
|
1566 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1567 | break; |
|
|
1568 | } |
|
|
1569 | } |
|
|
1570 | } |
|
|
1571 | } |
|
|
1572 | #endif |
|
|
1573 | |
|
|
1574 | void inline_size |
701 | timers_reify (EV_P) |
1575 | timers_reify (EV_P) |
702 | { |
1576 | { |
703 | while (timercnt && timers [0]->at <= mn_now) |
1577 | while (timercnt && ev_at (timers [HEAP0]) <= mn_now) |
704 | { |
1578 | { |
705 | struct ev_timer *w = timers [0]; |
1579 | ev_timer *w = (ev_timer *)timers [HEAP0]; |
|
|
1580 | |
|
|
1581 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
706 | |
1582 | |
707 | /* first reschedule or stop timer */ |
1583 | /* first reschedule or stop timer */ |
708 | if (w->repeat) |
1584 | if (w->repeat) |
709 | { |
1585 | { |
710 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1586 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
711 | w->at = mn_now + w->repeat; |
1587 | |
|
|
1588 | ev_at (w) += w->repeat; |
|
|
1589 | if (ev_at (w) < mn_now) |
|
|
1590 | ev_at (w) = mn_now; |
|
|
1591 | |
712 | downheap ((WT *)timers, timercnt, 0); |
1592 | downheap (timers, timercnt, HEAP0); |
713 | } |
1593 | } |
714 | else |
1594 | else |
715 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1595 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
716 | |
1596 | |
717 | event ((W)w, EV_TIMEOUT); |
1597 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
718 | } |
1598 | } |
719 | } |
1599 | } |
720 | |
1600 | |
721 | static void |
1601 | #if EV_PERIODIC_ENABLE |
|
|
1602 | void inline_size |
722 | periodics_reify (EV_P) |
1603 | periodics_reify (EV_P) |
723 | { |
1604 | { |
724 | while (periodiccnt && periodics [0]->at <= rt_now) |
1605 | while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) |
725 | { |
1606 | { |
726 | struct ev_periodic *w = periodics [0]; |
1607 | ev_periodic *w = (ev_periodic *)periodics [HEAP0]; |
|
|
1608 | |
|
|
1609 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
727 | |
1610 | |
728 | /* first reschedule or stop timer */ |
1611 | /* first reschedule or stop timer */ |
729 | if (w->interval) |
1612 | if (w->reschedule_cb) |
730 | { |
1613 | { |
|
|
1614 | ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
|
|
1615 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); |
|
|
1616 | downheap (periodics, periodiccnt, 1); |
|
|
1617 | } |
|
|
1618 | else if (w->interval) |
|
|
1619 | { |
731 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
1620 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1621 | if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; |
732 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
1622 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now)); |
733 | downheap ((WT *)periodics, periodiccnt, 0); |
1623 | downheap (periodics, periodiccnt, HEAP0); |
734 | } |
1624 | } |
735 | else |
1625 | else |
736 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1626 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
737 | |
1627 | |
738 | event (EV_A_ (W)w, EV_PERIODIC); |
1628 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
739 | } |
1629 | } |
740 | } |
1630 | } |
741 | |
1631 | |
742 | static void |
1632 | static void noinline |
743 | periodics_reschedule (EV_P_ ev_tstamp diff) |
1633 | periodics_reschedule (EV_P) |
744 | { |
1634 | { |
745 | int i; |
1635 | int i; |
746 | |
1636 | |
747 | /* adjust periodics after time jump */ |
1637 | /* adjust periodics after time jump */ |
748 | for (i = 0; i < periodiccnt; ++i) |
1638 | for (i = 1; i <= periodiccnt; ++i) |
749 | { |
1639 | { |
750 | struct ev_periodic *w = periodics [i]; |
1640 | ev_periodic *w = (ev_periodic *)periodics [i]; |
751 | |
1641 | |
|
|
1642 | if (w->reschedule_cb) |
|
|
1643 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
752 | if (w->interval) |
1644 | else if (w->interval) |
753 | { |
|
|
754 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
1645 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
755 | |
|
|
756 | if (fabs (diff) >= 1e-4) |
|
|
757 | { |
|
|
758 | ev_periodic_stop (EV_A_ w); |
|
|
759 | ev_periodic_start (EV_A_ w); |
|
|
760 | |
|
|
761 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
762 | } |
|
|
763 | } |
|
|
764 | } |
|
|
765 | } |
|
|
766 | |
|
|
767 | inline int |
|
|
768 | time_update_monotonic (EV_P) |
|
|
769 | { |
|
|
770 | mn_now = get_clock (); |
|
|
771 | |
|
|
772 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
773 | { |
1646 | } |
774 | rt_now = mn_now + diff; |
|
|
775 | return 0; |
|
|
776 | } |
|
|
777 | else |
|
|
778 | { |
|
|
779 | now_floor = mn_now; |
|
|
780 | rt_now = ev_time (); |
|
|
781 | return 1; |
|
|
782 | } |
|
|
783 | } |
|
|
784 | |
1647 | |
785 | static void |
1648 | /* now rebuild the heap */ |
786 | time_update (EV_P) |
1649 | for (i = periodiccnt >> 1; --i; ) |
|
|
1650 | downheap (periodics, periodiccnt, i + HEAP0); |
|
|
1651 | } |
|
|
1652 | #endif |
|
|
1653 | |
|
|
1654 | void inline_speed |
|
|
1655 | time_update (EV_P_ ev_tstamp max_block) |
787 | { |
1656 | { |
788 | int i; |
1657 | int i; |
789 | |
1658 | |
790 | #if EV_USE_MONOTONIC |
1659 | #if EV_USE_MONOTONIC |
791 | if (expect_true (have_monotonic)) |
1660 | if (expect_true (have_monotonic)) |
792 | { |
1661 | { |
793 | if (time_update_monotonic (EV_A)) |
1662 | ev_tstamp odiff = rtmn_diff; |
|
|
1663 | |
|
|
1664 | mn_now = get_clock (); |
|
|
1665 | |
|
|
1666 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1667 | /* interpolate in the meantime */ |
|
|
1668 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
794 | { |
1669 | { |
795 | ev_tstamp odiff = diff; |
1670 | ev_rt_now = rtmn_diff + mn_now; |
796 | |
1671 | return; |
797 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
798 | { |
|
|
799 | diff = rt_now - mn_now; |
|
|
800 | |
|
|
801 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
802 | return; /* all is well */ |
|
|
803 | |
|
|
804 | rt_now = ev_time (); |
|
|
805 | mn_now = get_clock (); |
|
|
806 | now_floor = mn_now; |
|
|
807 | } |
|
|
808 | |
|
|
809 | periodics_reschedule (EV_A_ diff - odiff); |
|
|
810 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
811 | } |
1672 | } |
|
|
1673 | |
|
|
1674 | now_floor = mn_now; |
|
|
1675 | ev_rt_now = ev_time (); |
|
|
1676 | |
|
|
1677 | /* loop a few times, before making important decisions. |
|
|
1678 | * on the choice of "4": one iteration isn't enough, |
|
|
1679 | * in case we get preempted during the calls to |
|
|
1680 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1681 | * to succeed in that case, though. and looping a few more times |
|
|
1682 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1683 | * in the unlikely event of having been preempted here. |
|
|
1684 | */ |
|
|
1685 | for (i = 4; --i; ) |
|
|
1686 | { |
|
|
1687 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1688 | |
|
|
1689 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
1690 | return; /* all is well */ |
|
|
1691 | |
|
|
1692 | ev_rt_now = ev_time (); |
|
|
1693 | mn_now = get_clock (); |
|
|
1694 | now_floor = mn_now; |
|
|
1695 | } |
|
|
1696 | |
|
|
1697 | # if EV_PERIODIC_ENABLE |
|
|
1698 | periodics_reschedule (EV_A); |
|
|
1699 | # endif |
|
|
1700 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1701 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
812 | } |
1702 | } |
813 | else |
1703 | else |
814 | #endif |
1704 | #endif |
815 | { |
1705 | { |
816 | rt_now = ev_time (); |
1706 | ev_rt_now = ev_time (); |
817 | |
1707 | |
818 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
1708 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
819 | { |
1709 | { |
|
|
1710 | #if EV_PERIODIC_ENABLE |
820 | periodics_reschedule (EV_A_ rt_now - mn_now); |
1711 | periodics_reschedule (EV_A); |
821 | |
1712 | #endif |
822 | /* adjust timers. this is easy, as the offset is the same for all */ |
1713 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
823 | for (i = 0; i < timercnt; ++i) |
1714 | for (i = 1; i <= timercnt; ++i) |
824 | timers [i]->at += diff; |
1715 | ev_at (timers [i]) += ev_rt_now - mn_now; |
825 | } |
1716 | } |
826 | |
1717 | |
827 | mn_now = rt_now; |
1718 | mn_now = ev_rt_now; |
828 | } |
1719 | } |
829 | } |
1720 | } |
830 | |
1721 | |
831 | void |
1722 | void |
832 | ev_ref (EV_P) |
1723 | ev_ref (EV_P) |
… | |
… | |
843 | static int loop_done; |
1734 | static int loop_done; |
844 | |
1735 | |
845 | void |
1736 | void |
846 | ev_loop (EV_P_ int flags) |
1737 | ev_loop (EV_P_ int flags) |
847 | { |
1738 | { |
848 | double block; |
1739 | loop_done = EVUNLOOP_CANCEL; |
849 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1740 | |
|
|
1741 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
850 | |
1742 | |
851 | do |
1743 | do |
852 | { |
1744 | { |
|
|
1745 | #ifndef _WIN32 |
|
|
1746 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1747 | if (expect_false (getpid () != curpid)) |
|
|
1748 | { |
|
|
1749 | curpid = getpid (); |
|
|
1750 | postfork = 1; |
|
|
1751 | } |
|
|
1752 | #endif |
|
|
1753 | |
|
|
1754 | #if EV_FORK_ENABLE |
|
|
1755 | /* we might have forked, so queue fork handlers */ |
|
|
1756 | if (expect_false (postfork)) |
|
|
1757 | if (forkcnt) |
|
|
1758 | { |
|
|
1759 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1760 | call_pending (EV_A); |
|
|
1761 | } |
|
|
1762 | #endif |
|
|
1763 | |
853 | /* queue check watchers (and execute them) */ |
1764 | /* queue prepare watchers (and execute them) */ |
854 | if (expect_false (preparecnt)) |
1765 | if (expect_false (preparecnt)) |
855 | { |
1766 | { |
856 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1767 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
857 | call_pending (EV_A); |
1768 | call_pending (EV_A); |
858 | } |
1769 | } |
859 | |
1770 | |
|
|
1771 | if (expect_false (!activecnt)) |
|
|
1772 | break; |
|
|
1773 | |
|
|
1774 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1775 | if (expect_false (postfork)) |
|
|
1776 | loop_fork (EV_A); |
|
|
1777 | |
860 | /* update fd-related kernel structures */ |
1778 | /* update fd-related kernel structures */ |
861 | fd_reify (EV_A); |
1779 | fd_reify (EV_A); |
862 | |
1780 | |
863 | /* calculate blocking time */ |
1781 | /* calculate blocking time */ |
|
|
1782 | { |
|
|
1783 | ev_tstamp waittime = 0.; |
|
|
1784 | ev_tstamp sleeptime = 0.; |
864 | |
1785 | |
865 | /* we only need this for !monotonic clockor timers, but as we basically |
1786 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
866 | always have timers, we just calculate it always */ |
|
|
867 | #if EV_USE_MONOTONIC |
|
|
868 | if (expect_true (have_monotonic)) |
|
|
869 | time_update_monotonic (EV_A); |
|
|
870 | else |
|
|
871 | #endif |
|
|
872 | { |
1787 | { |
873 | rt_now = ev_time (); |
1788 | /* update time to cancel out callback processing overhead */ |
874 | mn_now = rt_now; |
1789 | time_update (EV_A_ 1e100); |
875 | } |
|
|
876 | |
1790 | |
877 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
878 | block = 0.; |
|
|
879 | else |
|
|
880 | { |
|
|
881 | block = MAX_BLOCKTIME; |
1791 | waittime = MAX_BLOCKTIME; |
882 | |
1792 | |
883 | if (timercnt) |
1793 | if (timercnt) |
884 | { |
1794 | { |
885 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
1795 | ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; |
886 | if (block > to) block = to; |
1796 | if (waittime > to) waittime = to; |
887 | } |
1797 | } |
888 | |
1798 | |
|
|
1799 | #if EV_PERIODIC_ENABLE |
889 | if (periodiccnt) |
1800 | if (periodiccnt) |
890 | { |
1801 | { |
891 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
1802 | ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
892 | if (block > to) block = to; |
1803 | if (waittime > to) waittime = to; |
893 | } |
1804 | } |
|
|
1805 | #endif |
894 | |
1806 | |
895 | if (block < 0.) block = 0.; |
1807 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1808 | waittime = timeout_blocktime; |
|
|
1809 | |
|
|
1810 | sleeptime = waittime - backend_fudge; |
|
|
1811 | |
|
|
1812 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1813 | sleeptime = io_blocktime; |
|
|
1814 | |
|
|
1815 | if (sleeptime) |
|
|
1816 | { |
|
|
1817 | ev_sleep (sleeptime); |
|
|
1818 | waittime -= sleeptime; |
|
|
1819 | } |
896 | } |
1820 | } |
897 | |
1821 | |
898 | method_poll (EV_A_ block); |
1822 | ++loop_count; |
|
|
1823 | backend_poll (EV_A_ waittime); |
899 | |
1824 | |
900 | /* update rt_now, do magic */ |
1825 | /* update ev_rt_now, do magic */ |
901 | time_update (EV_A); |
1826 | time_update (EV_A_ waittime + sleeptime); |
|
|
1827 | } |
902 | |
1828 | |
903 | /* queue pending timers and reschedule them */ |
1829 | /* queue pending timers and reschedule them */ |
904 | timers_reify (EV_A); /* relative timers called last */ |
1830 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1831 | #if EV_PERIODIC_ENABLE |
905 | periodics_reify (EV_A); /* absolute timers called first */ |
1832 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1833 | #endif |
906 | |
1834 | |
|
|
1835 | #if EV_IDLE_ENABLE |
907 | /* queue idle watchers unless io or timers are pending */ |
1836 | /* queue idle watchers unless other events are pending */ |
908 | if (!pendingcnt) |
1837 | idle_reify (EV_A); |
909 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
1838 | #endif |
910 | |
1839 | |
911 | /* queue check watchers, to be executed first */ |
1840 | /* queue check watchers, to be executed first */ |
912 | if (checkcnt) |
1841 | if (expect_false (checkcnt)) |
913 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1842 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
914 | |
1843 | |
915 | call_pending (EV_A); |
1844 | call_pending (EV_A); |
916 | printf ("activecnt %d\n", activecnt);//D |
|
|
917 | } |
1845 | } |
918 | while (activecnt && !loop_done); |
1846 | while (expect_true ( |
|
|
1847 | activecnt |
|
|
1848 | && !loop_done |
|
|
1849 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1850 | )); |
919 | |
1851 | |
920 | if (loop_done != 2) |
1852 | if (loop_done == EVUNLOOP_ONE) |
921 | loop_done = 0; |
1853 | loop_done = EVUNLOOP_CANCEL; |
922 | } |
1854 | } |
923 | |
1855 | |
924 | void |
1856 | void |
925 | ev_unloop (EV_P_ int how) |
1857 | ev_unloop (EV_P_ int how) |
926 | { |
1858 | { |
927 | loop_done = how; |
1859 | loop_done = how; |
928 | } |
1860 | } |
929 | |
1861 | |
930 | /*****************************************************************************/ |
1862 | /*****************************************************************************/ |
931 | |
1863 | |
932 | inline void |
1864 | void inline_size |
933 | wlist_add (WL *head, WL elem) |
1865 | wlist_add (WL *head, WL elem) |
934 | { |
1866 | { |
935 | elem->next = *head; |
1867 | elem->next = *head; |
936 | *head = elem; |
1868 | *head = elem; |
937 | } |
1869 | } |
938 | |
1870 | |
939 | inline void |
1871 | void inline_size |
940 | wlist_del (WL *head, WL elem) |
1872 | wlist_del (WL *head, WL elem) |
941 | { |
1873 | { |
942 | while (*head) |
1874 | while (*head) |
943 | { |
1875 | { |
944 | if (*head == elem) |
1876 | if (*head == elem) |
… | |
… | |
949 | |
1881 | |
950 | head = &(*head)->next; |
1882 | head = &(*head)->next; |
951 | } |
1883 | } |
952 | } |
1884 | } |
953 | |
1885 | |
954 | inline void |
1886 | void inline_speed |
955 | ev_clear_pending (EV_P_ W w) |
1887 | clear_pending (EV_P_ W w) |
956 | { |
1888 | { |
957 | if (w->pending) |
1889 | if (w->pending) |
958 | { |
1890 | { |
959 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1891 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
960 | w->pending = 0; |
1892 | w->pending = 0; |
961 | } |
1893 | } |
962 | } |
1894 | } |
963 | |
1895 | |
964 | inline void |
1896 | int |
|
|
1897 | ev_clear_pending (EV_P_ void *w) |
|
|
1898 | { |
|
|
1899 | W w_ = (W)w; |
|
|
1900 | int pending = w_->pending; |
|
|
1901 | |
|
|
1902 | if (expect_true (pending)) |
|
|
1903 | { |
|
|
1904 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1905 | w_->pending = 0; |
|
|
1906 | p->w = 0; |
|
|
1907 | return p->events; |
|
|
1908 | } |
|
|
1909 | else |
|
|
1910 | return 0; |
|
|
1911 | } |
|
|
1912 | |
|
|
1913 | void inline_size |
|
|
1914 | pri_adjust (EV_P_ W w) |
|
|
1915 | { |
|
|
1916 | int pri = w->priority; |
|
|
1917 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1918 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1919 | w->priority = pri; |
|
|
1920 | } |
|
|
1921 | |
|
|
1922 | void inline_speed |
965 | ev_start (EV_P_ W w, int active) |
1923 | ev_start (EV_P_ W w, int active) |
966 | { |
1924 | { |
967 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
1925 | pri_adjust (EV_A_ w); |
968 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
969 | |
|
|
970 | w->active = active; |
1926 | w->active = active; |
971 | ev_ref (EV_A); |
1927 | ev_ref (EV_A); |
972 | } |
1928 | } |
973 | |
1929 | |
974 | inline void |
1930 | void inline_size |
975 | ev_stop (EV_P_ W w) |
1931 | ev_stop (EV_P_ W w) |
976 | { |
1932 | { |
977 | ev_unref (EV_A); |
1933 | ev_unref (EV_A); |
978 | w->active = 0; |
1934 | w->active = 0; |
979 | } |
1935 | } |
980 | |
1936 | |
981 | /*****************************************************************************/ |
1937 | /*****************************************************************************/ |
982 | |
1938 | |
983 | void |
1939 | void noinline |
984 | ev_io_start (EV_P_ struct ev_io *w) |
1940 | ev_io_start (EV_P_ ev_io *w) |
985 | { |
1941 | { |
986 | int fd = w->fd; |
1942 | int fd = w->fd; |
987 | |
1943 | |
988 | if (ev_is_active (w)) |
1944 | if (expect_false (ev_is_active (w))) |
989 | return; |
1945 | return; |
990 | |
1946 | |
991 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1947 | assert (("ev_io_start called with negative fd", fd >= 0)); |
992 | |
1948 | |
993 | ev_start (EV_A_ (W)w, 1); |
1949 | ev_start (EV_A_ (W)w, 1); |
994 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1950 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
995 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1951 | wlist_add (&anfds[fd].head, (WL)w); |
996 | |
1952 | |
997 | fd_change (EV_A_ fd); |
1953 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1954 | w->events &= ~EV_IOFDSET; |
998 | } |
1955 | } |
999 | |
1956 | |
1000 | void |
1957 | void noinline |
1001 | ev_io_stop (EV_P_ struct ev_io *w) |
1958 | ev_io_stop (EV_P_ ev_io *w) |
1002 | { |
1959 | { |
1003 | ev_clear_pending (EV_A_ (W)w); |
1960 | clear_pending (EV_A_ (W)w); |
1004 | if (!ev_is_active (w)) |
1961 | if (expect_false (!ev_is_active (w))) |
1005 | return; |
1962 | return; |
1006 | |
1963 | |
|
|
1964 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1965 | |
1007 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1966 | wlist_del (&anfds[w->fd].head, (WL)w); |
1008 | ev_stop (EV_A_ (W)w); |
1967 | ev_stop (EV_A_ (W)w); |
1009 | |
1968 | |
1010 | fd_change (EV_A_ w->fd); |
1969 | fd_change (EV_A_ w->fd, 1); |
1011 | } |
1970 | } |
1012 | |
1971 | |
1013 | void |
1972 | void noinline |
1014 | ev_timer_start (EV_P_ struct ev_timer *w) |
1973 | ev_timer_start (EV_P_ ev_timer *w) |
1015 | { |
1974 | { |
1016 | if (ev_is_active (w)) |
1975 | if (expect_false (ev_is_active (w))) |
1017 | return; |
1976 | return; |
1018 | |
1977 | |
1019 | w->at += mn_now; |
1978 | ev_at (w) += mn_now; |
1020 | |
1979 | |
1021 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1980 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1022 | |
1981 | |
1023 | ev_start (EV_A_ (W)w, ++timercnt); |
1982 | ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
1024 | array_needsize (timers, timermax, timercnt, ); |
1983 | array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); |
1025 | timers [timercnt - 1] = w; |
1984 | timers [ev_active (w)] = (WT)w; |
1026 | upheap ((WT *)timers, timercnt - 1); |
1985 | upheap (timers, ev_active (w)); |
1027 | } |
|
|
1028 | |
1986 | |
1029 | void |
1987 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ |
|
|
1988 | } |
|
|
1989 | |
|
|
1990 | void noinline |
1030 | ev_timer_stop (EV_P_ struct ev_timer *w) |
1991 | ev_timer_stop (EV_P_ ev_timer *w) |
1031 | { |
1992 | { |
1032 | ev_clear_pending (EV_A_ (W)w); |
1993 | clear_pending (EV_A_ (W)w); |
1033 | if (!ev_is_active (w)) |
1994 | if (expect_false (!ev_is_active (w))) |
1034 | return; |
1995 | return; |
1035 | |
1996 | |
1036 | if (w->active < timercnt--) |
1997 | { |
|
|
1998 | int active = ev_active (w); |
|
|
1999 | |
|
|
2000 | assert (("internal timer heap corruption", timers [active] == (WT)w)); |
|
|
2001 | |
|
|
2002 | if (expect_true (active < timercnt + HEAP0 - 1)) |
1037 | { |
2003 | { |
1038 | timers [w->active - 1] = timers [timercnt]; |
2004 | timers [active] = timers [timercnt + HEAP0 - 1]; |
1039 | downheap ((WT *)timers, timercnt, w->active - 1); |
2005 | adjustheap (timers, timercnt, active); |
1040 | } |
2006 | } |
1041 | |
2007 | |
1042 | w->at = w->repeat; |
2008 | --timercnt; |
|
|
2009 | } |
|
|
2010 | |
|
|
2011 | ev_at (w) -= mn_now; |
1043 | |
2012 | |
1044 | ev_stop (EV_A_ (W)w); |
2013 | ev_stop (EV_A_ (W)w); |
1045 | } |
2014 | } |
1046 | |
2015 | |
1047 | void |
2016 | void noinline |
1048 | ev_timer_again (EV_P_ struct ev_timer *w) |
2017 | ev_timer_again (EV_P_ ev_timer *w) |
1049 | { |
2018 | { |
1050 | if (ev_is_active (w)) |
2019 | if (ev_is_active (w)) |
1051 | { |
2020 | { |
1052 | if (w->repeat) |
2021 | if (w->repeat) |
1053 | { |
2022 | { |
1054 | w->at = mn_now + w->repeat; |
2023 | ev_at (w) = mn_now + w->repeat; |
1055 | downheap ((WT *)timers, timercnt, w->active - 1); |
2024 | adjustheap (timers, timercnt, ev_active (w)); |
1056 | } |
2025 | } |
1057 | else |
2026 | else |
1058 | ev_timer_stop (EV_A_ w); |
2027 | ev_timer_stop (EV_A_ w); |
1059 | } |
2028 | } |
1060 | else if (w->repeat) |
2029 | else if (w->repeat) |
|
|
2030 | { |
|
|
2031 | ev_at (w) = w->repeat; |
1061 | ev_timer_start (EV_A_ w); |
2032 | ev_timer_start (EV_A_ w); |
|
|
2033 | } |
1062 | } |
2034 | } |
1063 | |
2035 | |
1064 | void |
2036 | #if EV_PERIODIC_ENABLE |
|
|
2037 | void noinline |
1065 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2038 | ev_periodic_start (EV_P_ ev_periodic *w) |
1066 | { |
2039 | { |
1067 | if (ev_is_active (w)) |
2040 | if (expect_false (ev_is_active (w))) |
1068 | return; |
2041 | return; |
1069 | |
2042 | |
|
|
2043 | if (w->reschedule_cb) |
|
|
2044 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2045 | else if (w->interval) |
|
|
2046 | { |
1070 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2047 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1071 | |
|
|
1072 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2048 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1073 | if (w->interval) |
|
|
1074 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
2049 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2050 | } |
|
|
2051 | else |
|
|
2052 | ev_at (w) = w->offset; |
1075 | |
2053 | |
1076 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2054 | ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
1077 | array_needsize (periodics, periodicmax, periodiccnt, ); |
2055 | array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); |
1078 | periodics [periodiccnt - 1] = w; |
2056 | periodics [ev_active (w)] = (WT)w; |
1079 | upheap ((WT *)periodics, periodiccnt - 1); |
2057 | upheap (periodics, ev_active (w)); |
1080 | } |
|
|
1081 | |
2058 | |
1082 | void |
2059 | /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ |
|
|
2060 | } |
|
|
2061 | |
|
|
2062 | void noinline |
1083 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2063 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1084 | { |
2064 | { |
1085 | ev_clear_pending (EV_A_ (W)w); |
2065 | clear_pending (EV_A_ (W)w); |
1086 | if (!ev_is_active (w)) |
2066 | if (expect_false (!ev_is_active (w))) |
1087 | return; |
2067 | return; |
1088 | |
2068 | |
1089 | if (w->active < periodiccnt--) |
2069 | { |
|
|
2070 | int active = ev_active (w); |
|
|
2071 | |
|
|
2072 | assert (("internal periodic heap corruption", periodics [active] == (WT)w)); |
|
|
2073 | |
|
|
2074 | if (expect_true (active < periodiccnt + HEAP0 - 1)) |
1090 | { |
2075 | { |
1091 | periodics [w->active - 1] = periodics [periodiccnt]; |
2076 | periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
1092 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
2077 | adjustheap (periodics, periodiccnt, active); |
1093 | } |
2078 | } |
|
|
2079 | |
|
|
2080 | --periodiccnt; |
|
|
2081 | } |
1094 | |
2082 | |
1095 | ev_stop (EV_A_ (W)w); |
2083 | ev_stop (EV_A_ (W)w); |
1096 | } |
2084 | } |
|
|
2085 | |
|
|
2086 | void noinline |
|
|
2087 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2088 | { |
|
|
2089 | /* TODO: use adjustheap and recalculation */ |
|
|
2090 | ev_periodic_stop (EV_A_ w); |
|
|
2091 | ev_periodic_start (EV_A_ w); |
|
|
2092 | } |
|
|
2093 | #endif |
1097 | |
2094 | |
1098 | #ifndef SA_RESTART |
2095 | #ifndef SA_RESTART |
1099 | # define SA_RESTART 0 |
2096 | # define SA_RESTART 0 |
1100 | #endif |
2097 | #endif |
1101 | |
2098 | |
1102 | void |
2099 | void noinline |
1103 | ev_signal_start (EV_P_ struct ev_signal *w) |
2100 | ev_signal_start (EV_P_ ev_signal *w) |
1104 | { |
2101 | { |
|
|
2102 | #if EV_MULTIPLICITY |
|
|
2103 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2104 | #endif |
1105 | if (ev_is_active (w)) |
2105 | if (expect_false (ev_is_active (w))) |
1106 | return; |
2106 | return; |
1107 | |
2107 | |
1108 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2108 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1109 | |
2109 | |
|
|
2110 | evpipe_init (EV_A); |
|
|
2111 | |
|
|
2112 | { |
|
|
2113 | #ifndef _WIN32 |
|
|
2114 | sigset_t full, prev; |
|
|
2115 | sigfillset (&full); |
|
|
2116 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2117 | #endif |
|
|
2118 | |
|
|
2119 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2120 | |
|
|
2121 | #ifndef _WIN32 |
|
|
2122 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2123 | #endif |
|
|
2124 | } |
|
|
2125 | |
1110 | ev_start (EV_A_ (W)w, 1); |
2126 | ev_start (EV_A_ (W)w, 1); |
1111 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
1112 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2127 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1113 | |
2128 | |
1114 | if (!w->next) |
2129 | if (!((WL)w)->next) |
1115 | { |
2130 | { |
|
|
2131 | #if _WIN32 |
|
|
2132 | signal (w->signum, ev_sighandler); |
|
|
2133 | #else |
1116 | struct sigaction sa; |
2134 | struct sigaction sa; |
1117 | sa.sa_handler = sighandler; |
2135 | sa.sa_handler = ev_sighandler; |
1118 | sigfillset (&sa.sa_mask); |
2136 | sigfillset (&sa.sa_mask); |
1119 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2137 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1120 | sigaction (w->signum, &sa, 0); |
2138 | sigaction (w->signum, &sa, 0); |
|
|
2139 | #endif |
1121 | } |
2140 | } |
1122 | } |
2141 | } |
1123 | |
2142 | |
1124 | void |
2143 | void noinline |
1125 | ev_signal_stop (EV_P_ struct ev_signal *w) |
2144 | ev_signal_stop (EV_P_ ev_signal *w) |
1126 | { |
2145 | { |
1127 | ev_clear_pending (EV_A_ (W)w); |
2146 | clear_pending (EV_A_ (W)w); |
1128 | if (!ev_is_active (w)) |
2147 | if (expect_false (!ev_is_active (w))) |
1129 | return; |
2148 | return; |
1130 | |
2149 | |
1131 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2150 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1132 | ev_stop (EV_A_ (W)w); |
2151 | ev_stop (EV_A_ (W)w); |
1133 | |
2152 | |
1134 | if (!signals [w->signum - 1].head) |
2153 | if (!signals [w->signum - 1].head) |
1135 | signal (w->signum, SIG_DFL); |
2154 | signal (w->signum, SIG_DFL); |
1136 | } |
2155 | } |
1137 | |
2156 | |
1138 | void |
2157 | void |
1139 | ev_idle_start (EV_P_ struct ev_idle *w) |
2158 | ev_child_start (EV_P_ ev_child *w) |
1140 | { |
2159 | { |
|
|
2160 | #if EV_MULTIPLICITY |
|
|
2161 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2162 | #endif |
1141 | if (ev_is_active (w)) |
2163 | if (expect_false (ev_is_active (w))) |
1142 | return; |
2164 | return; |
1143 | |
2165 | |
1144 | ev_start (EV_A_ (W)w, ++idlecnt); |
2166 | ev_start (EV_A_ (W)w, 1); |
1145 | array_needsize (idles, idlemax, idlecnt, ); |
2167 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1146 | idles [idlecnt - 1] = w; |
|
|
1147 | } |
2168 | } |
1148 | |
2169 | |
1149 | void |
2170 | void |
1150 | ev_idle_stop (EV_P_ struct ev_idle *w) |
2171 | ev_child_stop (EV_P_ ev_child *w) |
1151 | { |
2172 | { |
1152 | ev_clear_pending (EV_A_ (W)w); |
2173 | clear_pending (EV_A_ (W)w); |
1153 | if (ev_is_active (w)) |
2174 | if (expect_false (!ev_is_active (w))) |
1154 | return; |
2175 | return; |
1155 | |
2176 | |
1156 | idles [w->active - 1] = idles [--idlecnt]; |
2177 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1157 | ev_stop (EV_A_ (W)w); |
2178 | ev_stop (EV_A_ (W)w); |
1158 | } |
2179 | } |
1159 | |
2180 | |
1160 | void |
2181 | #if EV_STAT_ENABLE |
1161 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
2182 | |
|
|
2183 | # ifdef _WIN32 |
|
|
2184 | # undef lstat |
|
|
2185 | # define lstat(a,b) _stati64 (a,b) |
|
|
2186 | # endif |
|
|
2187 | |
|
|
2188 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2189 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2190 | |
|
|
2191 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2192 | |
|
|
2193 | #if EV_USE_INOTIFY |
|
|
2194 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2195 | |
|
|
2196 | static void noinline |
|
|
2197 | infy_add (EV_P_ ev_stat *w) |
1162 | { |
2198 | { |
1163 | if (ev_is_active (w)) |
2199 | 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); |
|
|
2200 | |
|
|
2201 | if (w->wd < 0) |
|
|
2202 | { |
|
|
2203 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2204 | |
|
|
2205 | /* monitor some parent directory for speedup hints */ |
|
|
2206 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2207 | /* but an efficiency issue only */ |
|
|
2208 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2209 | { |
|
|
2210 | char path [4096]; |
|
|
2211 | strcpy (path, w->path); |
|
|
2212 | |
|
|
2213 | do |
|
|
2214 | { |
|
|
2215 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2216 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2217 | |
|
|
2218 | char *pend = strrchr (path, '/'); |
|
|
2219 | |
|
|
2220 | if (!pend) |
|
|
2221 | break; /* whoops, no '/', complain to your admin */ |
|
|
2222 | |
|
|
2223 | *pend = 0; |
|
|
2224 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2225 | } |
|
|
2226 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2227 | } |
|
|
2228 | } |
|
|
2229 | else |
|
|
2230 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2231 | |
|
|
2232 | if (w->wd >= 0) |
|
|
2233 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2234 | } |
|
|
2235 | |
|
|
2236 | static void noinline |
|
|
2237 | infy_del (EV_P_ ev_stat *w) |
|
|
2238 | { |
|
|
2239 | int slot; |
|
|
2240 | int wd = w->wd; |
|
|
2241 | |
|
|
2242 | if (wd < 0) |
1164 | return; |
2243 | return; |
1165 | |
2244 | |
|
|
2245 | w->wd = -2; |
|
|
2246 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2247 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2248 | |
|
|
2249 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2250 | inotify_rm_watch (fs_fd, wd); |
|
|
2251 | } |
|
|
2252 | |
|
|
2253 | static void noinline |
|
|
2254 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2255 | { |
|
|
2256 | if (slot < 0) |
|
|
2257 | /* overflow, need to check for all hahs slots */ |
|
|
2258 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2259 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2260 | else |
|
|
2261 | { |
|
|
2262 | WL w_; |
|
|
2263 | |
|
|
2264 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2265 | { |
|
|
2266 | ev_stat *w = (ev_stat *)w_; |
|
|
2267 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2268 | |
|
|
2269 | if (w->wd == wd || wd == -1) |
|
|
2270 | { |
|
|
2271 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2272 | { |
|
|
2273 | w->wd = -1; |
|
|
2274 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2275 | } |
|
|
2276 | |
|
|
2277 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2278 | } |
|
|
2279 | } |
|
|
2280 | } |
|
|
2281 | } |
|
|
2282 | |
|
|
2283 | static void |
|
|
2284 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2285 | { |
|
|
2286 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2287 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2288 | int ofs; |
|
|
2289 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2290 | |
|
|
2291 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2292 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2293 | } |
|
|
2294 | |
|
|
2295 | void inline_size |
|
|
2296 | infy_init (EV_P) |
|
|
2297 | { |
|
|
2298 | if (fs_fd != -2) |
|
|
2299 | return; |
|
|
2300 | |
|
|
2301 | fs_fd = inotify_init (); |
|
|
2302 | |
|
|
2303 | if (fs_fd >= 0) |
|
|
2304 | { |
|
|
2305 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2306 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2307 | ev_io_start (EV_A_ &fs_w); |
|
|
2308 | } |
|
|
2309 | } |
|
|
2310 | |
|
|
2311 | void inline_size |
|
|
2312 | infy_fork (EV_P) |
|
|
2313 | { |
|
|
2314 | int slot; |
|
|
2315 | |
|
|
2316 | if (fs_fd < 0) |
|
|
2317 | return; |
|
|
2318 | |
|
|
2319 | close (fs_fd); |
|
|
2320 | fs_fd = inotify_init (); |
|
|
2321 | |
|
|
2322 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2323 | { |
|
|
2324 | WL w_ = fs_hash [slot].head; |
|
|
2325 | fs_hash [slot].head = 0; |
|
|
2326 | |
|
|
2327 | while (w_) |
|
|
2328 | { |
|
|
2329 | ev_stat *w = (ev_stat *)w_; |
|
|
2330 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2331 | |
|
|
2332 | w->wd = -1; |
|
|
2333 | |
|
|
2334 | if (fs_fd >= 0) |
|
|
2335 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2336 | else |
|
|
2337 | ev_timer_start (EV_A_ &w->timer); |
|
|
2338 | } |
|
|
2339 | |
|
|
2340 | } |
|
|
2341 | } |
|
|
2342 | |
|
|
2343 | #endif |
|
|
2344 | |
|
|
2345 | void |
|
|
2346 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2347 | { |
|
|
2348 | if (lstat (w->path, &w->attr) < 0) |
|
|
2349 | w->attr.st_nlink = 0; |
|
|
2350 | else if (!w->attr.st_nlink) |
|
|
2351 | w->attr.st_nlink = 1; |
|
|
2352 | } |
|
|
2353 | |
|
|
2354 | static void noinline |
|
|
2355 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2356 | { |
|
|
2357 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2358 | |
|
|
2359 | /* we copy this here each the time so that */ |
|
|
2360 | /* prev has the old value when the callback gets invoked */ |
|
|
2361 | w->prev = w->attr; |
|
|
2362 | ev_stat_stat (EV_A_ w); |
|
|
2363 | |
|
|
2364 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2365 | if ( |
|
|
2366 | w->prev.st_dev != w->attr.st_dev |
|
|
2367 | || w->prev.st_ino != w->attr.st_ino |
|
|
2368 | || w->prev.st_mode != w->attr.st_mode |
|
|
2369 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2370 | || w->prev.st_uid != w->attr.st_uid |
|
|
2371 | || w->prev.st_gid != w->attr.st_gid |
|
|
2372 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2373 | || w->prev.st_size != w->attr.st_size |
|
|
2374 | || w->prev.st_atime != w->attr.st_atime |
|
|
2375 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2376 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2377 | ) { |
|
|
2378 | #if EV_USE_INOTIFY |
|
|
2379 | infy_del (EV_A_ w); |
|
|
2380 | infy_add (EV_A_ w); |
|
|
2381 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2382 | #endif |
|
|
2383 | |
|
|
2384 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2385 | } |
|
|
2386 | } |
|
|
2387 | |
|
|
2388 | void |
|
|
2389 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2390 | { |
|
|
2391 | if (expect_false (ev_is_active (w))) |
|
|
2392 | return; |
|
|
2393 | |
|
|
2394 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2395 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2396 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2397 | |
|
|
2398 | ev_stat_stat (EV_A_ w); |
|
|
2399 | |
|
|
2400 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2401 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2402 | |
|
|
2403 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2404 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2405 | |
|
|
2406 | #if EV_USE_INOTIFY |
|
|
2407 | infy_init (EV_A); |
|
|
2408 | |
|
|
2409 | if (fs_fd >= 0) |
|
|
2410 | infy_add (EV_A_ w); |
|
|
2411 | else |
|
|
2412 | #endif |
|
|
2413 | ev_timer_start (EV_A_ &w->timer); |
|
|
2414 | |
|
|
2415 | ev_start (EV_A_ (W)w, 1); |
|
|
2416 | } |
|
|
2417 | |
|
|
2418 | void |
|
|
2419 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2420 | { |
|
|
2421 | clear_pending (EV_A_ (W)w); |
|
|
2422 | if (expect_false (!ev_is_active (w))) |
|
|
2423 | return; |
|
|
2424 | |
|
|
2425 | #if EV_USE_INOTIFY |
|
|
2426 | infy_del (EV_A_ w); |
|
|
2427 | #endif |
|
|
2428 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2429 | |
|
|
2430 | ev_stop (EV_A_ (W)w); |
|
|
2431 | } |
|
|
2432 | #endif |
|
|
2433 | |
|
|
2434 | #if EV_IDLE_ENABLE |
|
|
2435 | void |
|
|
2436 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2437 | { |
|
|
2438 | if (expect_false (ev_is_active (w))) |
|
|
2439 | return; |
|
|
2440 | |
|
|
2441 | pri_adjust (EV_A_ (W)w); |
|
|
2442 | |
|
|
2443 | { |
|
|
2444 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2445 | |
|
|
2446 | ++idleall; |
|
|
2447 | ev_start (EV_A_ (W)w, active); |
|
|
2448 | |
|
|
2449 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2450 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2451 | } |
|
|
2452 | } |
|
|
2453 | |
|
|
2454 | void |
|
|
2455 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2456 | { |
|
|
2457 | clear_pending (EV_A_ (W)w); |
|
|
2458 | if (expect_false (!ev_is_active (w))) |
|
|
2459 | return; |
|
|
2460 | |
|
|
2461 | { |
|
|
2462 | int active = ev_active (w); |
|
|
2463 | |
|
|
2464 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2465 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2466 | |
|
|
2467 | ev_stop (EV_A_ (W)w); |
|
|
2468 | --idleall; |
|
|
2469 | } |
|
|
2470 | } |
|
|
2471 | #endif |
|
|
2472 | |
|
|
2473 | void |
|
|
2474 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2475 | { |
|
|
2476 | if (expect_false (ev_is_active (w))) |
|
|
2477 | return; |
|
|
2478 | |
1166 | ev_start (EV_A_ (W)w, ++preparecnt); |
2479 | ev_start (EV_A_ (W)w, ++preparecnt); |
1167 | array_needsize (prepares, preparemax, preparecnt, ); |
2480 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
1168 | prepares [preparecnt - 1] = w; |
2481 | prepares [preparecnt - 1] = w; |
1169 | } |
2482 | } |
1170 | |
2483 | |
1171 | void |
2484 | void |
1172 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
2485 | ev_prepare_stop (EV_P_ ev_prepare *w) |
1173 | { |
2486 | { |
1174 | ev_clear_pending (EV_A_ (W)w); |
2487 | clear_pending (EV_A_ (W)w); |
1175 | if (ev_is_active (w)) |
2488 | if (expect_false (!ev_is_active (w))) |
1176 | return; |
2489 | return; |
1177 | |
2490 | |
|
|
2491 | { |
|
|
2492 | int active = ev_active (w); |
|
|
2493 | |
1178 | prepares [w->active - 1] = prepares [--preparecnt]; |
2494 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2495 | ev_active (prepares [active - 1]) = active; |
|
|
2496 | } |
|
|
2497 | |
1179 | ev_stop (EV_A_ (W)w); |
2498 | ev_stop (EV_A_ (W)w); |
1180 | } |
2499 | } |
1181 | |
2500 | |
1182 | void |
2501 | void |
1183 | ev_check_start (EV_P_ struct ev_check *w) |
2502 | ev_check_start (EV_P_ ev_check *w) |
1184 | { |
2503 | { |
1185 | if (ev_is_active (w)) |
2504 | if (expect_false (ev_is_active (w))) |
1186 | return; |
2505 | return; |
1187 | |
2506 | |
1188 | ev_start (EV_A_ (W)w, ++checkcnt); |
2507 | ev_start (EV_A_ (W)w, ++checkcnt); |
1189 | array_needsize (checks, checkmax, checkcnt, ); |
2508 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
1190 | checks [checkcnt - 1] = w; |
2509 | checks [checkcnt - 1] = w; |
1191 | } |
2510 | } |
1192 | |
2511 | |
1193 | void |
2512 | void |
1194 | ev_check_stop (EV_P_ struct ev_check *w) |
2513 | ev_check_stop (EV_P_ ev_check *w) |
1195 | { |
2514 | { |
1196 | ev_clear_pending (EV_A_ (W)w); |
2515 | clear_pending (EV_A_ (W)w); |
1197 | if (ev_is_active (w)) |
2516 | if (expect_false (!ev_is_active (w))) |
1198 | return; |
2517 | return; |
1199 | |
2518 | |
|
|
2519 | { |
|
|
2520 | int active = ev_active (w); |
|
|
2521 | |
1200 | checks [w->active - 1] = checks [--checkcnt]; |
2522 | checks [active - 1] = checks [--checkcnt]; |
|
|
2523 | ev_active (checks [active - 1]) = active; |
|
|
2524 | } |
|
|
2525 | |
1201 | ev_stop (EV_A_ (W)w); |
2526 | ev_stop (EV_A_ (W)w); |
1202 | } |
2527 | } |
1203 | |
2528 | |
1204 | void |
2529 | #if EV_EMBED_ENABLE |
1205 | ev_child_start (EV_P_ struct ev_child *w) |
2530 | void noinline |
|
|
2531 | ev_embed_sweep (EV_P_ ev_embed *w) |
1206 | { |
2532 | { |
|
|
2533 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2534 | } |
|
|
2535 | |
|
|
2536 | static void |
|
|
2537 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2538 | { |
|
|
2539 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2540 | |
1207 | if (ev_is_active (w)) |
2541 | if (ev_cb (w)) |
|
|
2542 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2543 | else |
|
|
2544 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2545 | } |
|
|
2546 | |
|
|
2547 | static void |
|
|
2548 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2549 | { |
|
|
2550 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2551 | |
|
|
2552 | { |
|
|
2553 | struct ev_loop *loop = w->other; |
|
|
2554 | |
|
|
2555 | while (fdchangecnt) |
|
|
2556 | { |
|
|
2557 | fd_reify (EV_A); |
|
|
2558 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2559 | } |
|
|
2560 | } |
|
|
2561 | } |
|
|
2562 | |
|
|
2563 | #if 0 |
|
|
2564 | static void |
|
|
2565 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2566 | { |
|
|
2567 | ev_idle_stop (EV_A_ idle); |
|
|
2568 | } |
|
|
2569 | #endif |
|
|
2570 | |
|
|
2571 | void |
|
|
2572 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2573 | { |
|
|
2574 | if (expect_false (ev_is_active (w))) |
1208 | return; |
2575 | return; |
1209 | |
2576 | |
|
|
2577 | { |
|
|
2578 | struct ev_loop *loop = w->other; |
|
|
2579 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2580 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2581 | } |
|
|
2582 | |
|
|
2583 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2584 | ev_io_start (EV_A_ &w->io); |
|
|
2585 | |
|
|
2586 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2587 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2588 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2589 | |
|
|
2590 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2591 | |
1210 | ev_start (EV_A_ (W)w, 1); |
2592 | ev_start (EV_A_ (W)w, 1); |
1211 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1212 | } |
2593 | } |
1213 | |
2594 | |
1214 | void |
2595 | void |
1215 | ev_child_stop (EV_P_ struct ev_child *w) |
2596 | ev_embed_stop (EV_P_ ev_embed *w) |
1216 | { |
2597 | { |
1217 | ev_clear_pending (EV_A_ (W)w); |
2598 | clear_pending (EV_A_ (W)w); |
1218 | if (ev_is_active (w)) |
2599 | if (expect_false (!ev_is_active (w))) |
1219 | return; |
2600 | return; |
1220 | |
2601 | |
1221 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2602 | ev_io_stop (EV_A_ &w->io); |
|
|
2603 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2604 | |
1222 | ev_stop (EV_A_ (W)w); |
2605 | ev_stop (EV_A_ (W)w); |
1223 | } |
2606 | } |
|
|
2607 | #endif |
|
|
2608 | |
|
|
2609 | #if EV_FORK_ENABLE |
|
|
2610 | void |
|
|
2611 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2612 | { |
|
|
2613 | if (expect_false (ev_is_active (w))) |
|
|
2614 | return; |
|
|
2615 | |
|
|
2616 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2617 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2618 | forks [forkcnt - 1] = w; |
|
|
2619 | } |
|
|
2620 | |
|
|
2621 | void |
|
|
2622 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2623 | { |
|
|
2624 | clear_pending (EV_A_ (W)w); |
|
|
2625 | if (expect_false (!ev_is_active (w))) |
|
|
2626 | return; |
|
|
2627 | |
|
|
2628 | { |
|
|
2629 | int active = ev_active (w); |
|
|
2630 | |
|
|
2631 | forks [active - 1] = forks [--forkcnt]; |
|
|
2632 | ev_active (forks [active - 1]) = active; |
|
|
2633 | } |
|
|
2634 | |
|
|
2635 | ev_stop (EV_A_ (W)w); |
|
|
2636 | } |
|
|
2637 | #endif |
|
|
2638 | |
|
|
2639 | #if EV_ASYNC_ENABLE |
|
|
2640 | void |
|
|
2641 | ev_async_start (EV_P_ ev_async *w) |
|
|
2642 | { |
|
|
2643 | if (expect_false (ev_is_active (w))) |
|
|
2644 | return; |
|
|
2645 | |
|
|
2646 | evpipe_init (EV_A); |
|
|
2647 | |
|
|
2648 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2649 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2650 | asyncs [asynccnt - 1] = w; |
|
|
2651 | } |
|
|
2652 | |
|
|
2653 | void |
|
|
2654 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2655 | { |
|
|
2656 | clear_pending (EV_A_ (W)w); |
|
|
2657 | if (expect_false (!ev_is_active (w))) |
|
|
2658 | return; |
|
|
2659 | |
|
|
2660 | { |
|
|
2661 | int active = ev_active (w); |
|
|
2662 | |
|
|
2663 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2664 | ev_active (asyncs [active - 1]) = active; |
|
|
2665 | } |
|
|
2666 | |
|
|
2667 | ev_stop (EV_A_ (W)w); |
|
|
2668 | } |
|
|
2669 | |
|
|
2670 | void |
|
|
2671 | ev_async_send (EV_P_ ev_async *w) |
|
|
2672 | { |
|
|
2673 | w->sent = 1; |
|
|
2674 | evpipe_write (EV_A_ &gotasync); |
|
|
2675 | } |
|
|
2676 | #endif |
1224 | |
2677 | |
1225 | /*****************************************************************************/ |
2678 | /*****************************************************************************/ |
1226 | |
2679 | |
1227 | struct ev_once |
2680 | struct ev_once |
1228 | { |
2681 | { |
1229 | struct ev_io io; |
2682 | ev_io io; |
1230 | struct ev_timer to; |
2683 | ev_timer to; |
1231 | void (*cb)(int revents, void *arg); |
2684 | void (*cb)(int revents, void *arg); |
1232 | void *arg; |
2685 | void *arg; |
1233 | }; |
2686 | }; |
1234 | |
2687 | |
1235 | static void |
2688 | static void |
… | |
… | |
1238 | void (*cb)(int revents, void *arg) = once->cb; |
2691 | void (*cb)(int revents, void *arg) = once->cb; |
1239 | void *arg = once->arg; |
2692 | void *arg = once->arg; |
1240 | |
2693 | |
1241 | ev_io_stop (EV_A_ &once->io); |
2694 | ev_io_stop (EV_A_ &once->io); |
1242 | ev_timer_stop (EV_A_ &once->to); |
2695 | ev_timer_stop (EV_A_ &once->to); |
1243 | free (once); |
2696 | ev_free (once); |
1244 | |
2697 | |
1245 | cb (revents, arg); |
2698 | cb (revents, arg); |
1246 | } |
2699 | } |
1247 | |
2700 | |
1248 | static void |
2701 | static void |
1249 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
2702 | once_cb_io (EV_P_ ev_io *w, int revents) |
1250 | { |
2703 | { |
1251 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2704 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1252 | } |
2705 | } |
1253 | |
2706 | |
1254 | static void |
2707 | static void |
1255 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
2708 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1256 | { |
2709 | { |
1257 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2710 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1258 | } |
2711 | } |
1259 | |
2712 | |
1260 | void |
2713 | void |
1261 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2714 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1262 | { |
2715 | { |
1263 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
2716 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1264 | |
2717 | |
1265 | if (!once) |
2718 | if (expect_false (!once)) |
|
|
2719 | { |
1266 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
2720 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1267 | else |
2721 | return; |
1268 | { |
2722 | } |
|
|
2723 | |
1269 | once->cb = cb; |
2724 | once->cb = cb; |
1270 | once->arg = arg; |
2725 | once->arg = arg; |
1271 | |
2726 | |
1272 | ev_watcher_init (&once->io, once_cb_io); |
2727 | ev_init (&once->io, once_cb_io); |
1273 | if (fd >= 0) |
2728 | if (fd >= 0) |
1274 | { |
2729 | { |
1275 | ev_io_set (&once->io, fd, events); |
2730 | ev_io_set (&once->io, fd, events); |
1276 | ev_io_start (EV_A_ &once->io); |
2731 | ev_io_start (EV_A_ &once->io); |
1277 | } |
2732 | } |
1278 | |
2733 | |
1279 | ev_watcher_init (&once->to, once_cb_to); |
2734 | ev_init (&once->to, once_cb_to); |
1280 | if (timeout >= 0.) |
2735 | if (timeout >= 0.) |
1281 | { |
2736 | { |
1282 | ev_timer_set (&once->to, timeout, 0.); |
2737 | ev_timer_set (&once->to, timeout, 0.); |
1283 | ev_timer_start (EV_A_ &once->to); |
2738 | ev_timer_start (EV_A_ &once->to); |
1284 | } |
|
|
1285 | } |
|
|
1286 | } |
|
|
1287 | |
|
|
1288 | /*****************************************************************************/ |
|
|
1289 | |
|
|
1290 | #if 0 |
|
|
1291 | |
|
|
1292 | struct ev_io wio; |
|
|
1293 | |
|
|
1294 | static void |
|
|
1295 | sin_cb (struct ev_io *w, int revents) |
|
|
1296 | { |
|
|
1297 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | static void |
|
|
1301 | ocb (struct ev_timer *w, int revents) |
|
|
1302 | { |
|
|
1303 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1304 | ev_timer_stop (w); |
|
|
1305 | ev_timer_start (w); |
|
|
1306 | } |
|
|
1307 | |
|
|
1308 | static void |
|
|
1309 | scb (struct ev_signal *w, int revents) |
|
|
1310 | { |
|
|
1311 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1312 | ev_io_stop (&wio); |
|
|
1313 | ev_io_start (&wio); |
|
|
1314 | } |
|
|
1315 | |
|
|
1316 | static void |
|
|
1317 | gcb (struct ev_signal *w, int revents) |
|
|
1318 | { |
|
|
1319 | fprintf (stderr, "generic %x\n", revents); |
|
|
1320 | |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | int main (void) |
|
|
1324 | { |
|
|
1325 | ev_init (0); |
|
|
1326 | |
|
|
1327 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1328 | ev_io_start (&wio); |
|
|
1329 | |
|
|
1330 | struct ev_timer t[10000]; |
|
|
1331 | |
|
|
1332 | #if 0 |
|
|
1333 | int i; |
|
|
1334 | for (i = 0; i < 10000; ++i) |
|
|
1335 | { |
2739 | } |
1336 | struct ev_timer *w = t + i; |
|
|
1337 | ev_watcher_init (w, ocb, i); |
|
|
1338 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1339 | ev_timer_start (w); |
|
|
1340 | if (drand48 () < 0.5) |
|
|
1341 | ev_timer_stop (w); |
|
|
1342 | } |
|
|
1343 | #endif |
|
|
1344 | |
|
|
1345 | struct ev_timer t1; |
|
|
1346 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1347 | ev_timer_start (&t1); |
|
|
1348 | |
|
|
1349 | struct ev_signal sig; |
|
|
1350 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1351 | ev_signal_start (&sig); |
|
|
1352 | |
|
|
1353 | struct ev_check cw; |
|
|
1354 | ev_check_init (&cw, gcb); |
|
|
1355 | ev_check_start (&cw); |
|
|
1356 | |
|
|
1357 | struct ev_idle iw; |
|
|
1358 | ev_idle_init (&iw, gcb); |
|
|
1359 | ev_idle_start (&iw); |
|
|
1360 | |
|
|
1361 | ev_loop (0); |
|
|
1362 | |
|
|
1363 | return 0; |
|
|
1364 | } |
2740 | } |
1365 | |
2741 | |
|
|
2742 | #if EV_MULTIPLICITY |
|
|
2743 | #include "ev_wrap.h" |
1366 | #endif |
2744 | #endif |
1367 | |
2745 | |
|
|
2746 | #ifdef __cplusplus |
|
|
2747 | } |
|
|
2748 | #endif |
1368 | |
2749 | |
1369 | |
|
|
1370 | |
|
|