1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
6 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
7 | * 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. |
8 | * |
27 | * |
9 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
10 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
11 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
12 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
13 | * 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 |
14 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
15 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
16 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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 */ |
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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 |
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49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_SYSCALL |
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53 | # ifndef EV_USE_CLOCK_SYSCALL |
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54 | # define EV_USE_CLOCK_SYSCALL 1 |
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55 | # ifndef EV_USE_REALTIME |
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56 | # define EV_USE_REALTIME 0 |
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57 | # endif |
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58 | # ifndef EV_USE_MONOTONIC |
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59 | # define EV_USE_MONOTONIC 1 |
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60 | # endif |
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61 | # endif |
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62 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
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63 | # define EV_USE_CLOCK_SYSCALL 0 |
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64 | # endif |
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65 | |
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66 | # if HAVE_CLOCK_GETTIME |
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67 | # ifndef EV_USE_MONOTONIC |
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68 | # define EV_USE_MONOTONIC 1 |
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69 | # endif |
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70 | # ifndef EV_USE_REALTIME |
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71 | # define EV_USE_REALTIME 0 |
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72 | # endif |
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73 | # else |
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74 | # ifndef EV_USE_MONOTONIC |
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75 | # define EV_USE_MONOTONIC 0 |
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76 | # endif |
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77 | # ifndef EV_USE_REALTIME |
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78 | # define EV_USE_REALTIME 0 |
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79 | # endif |
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80 | # endif |
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81 | |
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82 | # ifndef EV_USE_NANOSLEEP |
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83 | # if HAVE_NANOSLEEP |
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84 | # define EV_USE_NANOSLEEP 1 |
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85 | # else |
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86 | # define EV_USE_NANOSLEEP 0 |
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87 | # endif |
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88 | # endif |
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89 | |
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90 | # ifndef EV_USE_SELECT |
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91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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92 | # define EV_USE_SELECT 1 |
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93 | # else |
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94 | # define EV_USE_SELECT 0 |
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95 | # endif |
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96 | # endif |
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97 | |
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98 | # ifndef EV_USE_POLL |
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99 | # if HAVE_POLL && HAVE_POLL_H |
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100 | # define EV_USE_POLL 1 |
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101 | # else |
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102 | # define EV_USE_POLL 0 |
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103 | # endif |
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104 | # endif |
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105 | |
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106 | # ifndef EV_USE_EPOLL |
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107 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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108 | # define EV_USE_EPOLL 1 |
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109 | # else |
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110 | # define EV_USE_EPOLL 0 |
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111 | # endif |
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112 | # endif |
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113 | |
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114 | # ifndef EV_USE_KQUEUE |
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115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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116 | # define EV_USE_KQUEUE 1 |
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117 | # else |
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118 | # define EV_USE_KQUEUE 0 |
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119 | # endif |
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120 | # endif |
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121 | |
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122 | # ifndef EV_USE_PORT |
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123 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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124 | # define EV_USE_PORT 1 |
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125 | # else |
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126 | # define EV_USE_PORT 0 |
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127 | # endif |
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128 | # endif |
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129 | |
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130 | # ifndef EV_USE_INOTIFY |
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131 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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132 | # define EV_USE_INOTIFY 1 |
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133 | # else |
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134 | # define EV_USE_INOTIFY 0 |
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135 | # endif |
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136 | # endif |
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137 | |
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138 | # ifndef EV_USE_EVENTFD |
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139 | # if HAVE_EVENTFD |
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140 | # define EV_USE_EVENTFD 1 |
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141 | # else |
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142 | # define EV_USE_EVENTFD 0 |
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143 | # endif |
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144 | # endif |
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145 | |
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146 | #endif |
29 | |
147 | |
30 | #include <math.h> |
148 | #include <math.h> |
31 | #include <stdlib.h> |
149 | #include <stdlib.h> |
32 | #include <unistd.h> |
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33 | #include <fcntl.h> |
150 | #include <fcntl.h> |
34 | #include <signal.h> |
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35 | #include <stddef.h> |
151 | #include <stddef.h> |
36 | |
152 | |
37 | #include <stdio.h> |
153 | #include <stdio.h> |
38 | |
154 | |
39 | #include <assert.h> |
155 | #include <assert.h> |
40 | #include <errno.h> |
156 | #include <errno.h> |
41 | #include <sys/types.h> |
157 | #include <sys/types.h> |
42 | #include <sys/wait.h> |
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43 | #include <sys/time.h> |
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44 | #include <time.h> |
158 | #include <time.h> |
45 | |
159 | |
46 | #ifndef HAVE_MONOTONIC |
160 | #include <signal.h> |
47 | # ifdef CLOCK_MONOTONIC |
161 | |
48 | # define HAVE_MONOTONIC 1 |
162 | #ifdef EV_H |
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163 | # include EV_H |
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164 | #else |
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165 | # include "ev.h" |
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166 | #endif |
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167 | |
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168 | #ifndef _WIN32 |
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169 | # include <sys/time.h> |
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170 | # include <sys/wait.h> |
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171 | # include <unistd.h> |
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172 | #else |
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173 | # include <io.h> |
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174 | # define WIN32_LEAN_AND_MEAN |
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175 | # include <windows.h> |
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176 | # ifndef EV_SELECT_IS_WINSOCKET |
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177 | # define EV_SELECT_IS_WINSOCKET 1 |
49 | # endif |
178 | # endif |
50 | #endif |
179 | #endif |
51 | |
180 | |
52 | #ifndef HAVE_SELECT |
181 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
53 | # define HAVE_SELECT 1 |
182 | |
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183 | #ifndef EV_USE_CLOCK_SYSCALL |
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184 | # if __linux && __GLIBC__ >= 2 |
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185 | # define EV_USE_CLOCK_SYSCALL 1 |
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186 | # else |
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187 | # define EV_USE_CLOCK_SYSCALL 0 |
54 | #endif |
188 | # endif |
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189 | #endif |
55 | |
190 | |
56 | #ifndef HAVE_EPOLL |
191 | #ifndef EV_USE_MONOTONIC |
57 | # define HAVE_EPOLL 0 |
192 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
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193 | # define EV_USE_MONOTONIC 1 |
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194 | # else |
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195 | # define EV_USE_MONOTONIC 0 |
58 | #endif |
196 | # endif |
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197 | #endif |
59 | |
198 | |
60 | #ifndef HAVE_REALTIME |
199 | #ifndef EV_USE_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
200 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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201 | #endif |
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202 | |
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203 | #ifndef EV_USE_NANOSLEEP |
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204 | # if _POSIX_C_SOURCE >= 199309L |
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205 | # define EV_USE_NANOSLEEP 1 |
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206 | # else |
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207 | # define EV_USE_NANOSLEEP 0 |
62 | #endif |
208 | # endif |
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209 | #endif |
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210 | |
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211 | #ifndef EV_USE_SELECT |
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212 | # define EV_USE_SELECT 1 |
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213 | #endif |
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214 | |
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215 | #ifndef EV_USE_POLL |
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216 | # ifdef _WIN32 |
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217 | # define EV_USE_POLL 0 |
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218 | # else |
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219 | # define EV_USE_POLL 1 |
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220 | # endif |
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221 | #endif |
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222 | |
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223 | #ifndef EV_USE_EPOLL |
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224 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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225 | # define EV_USE_EPOLL 1 |
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226 | # else |
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227 | # define EV_USE_EPOLL 0 |
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228 | # endif |
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229 | #endif |
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230 | |
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231 | #ifndef EV_USE_KQUEUE |
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232 | # define EV_USE_KQUEUE 0 |
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233 | #endif |
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234 | |
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235 | #ifndef EV_USE_PORT |
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236 | # define EV_USE_PORT 0 |
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237 | #endif |
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238 | |
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239 | #ifndef EV_USE_INOTIFY |
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240 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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241 | # define EV_USE_INOTIFY 1 |
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242 | # else |
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243 | # define EV_USE_INOTIFY 0 |
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244 | # endif |
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245 | #endif |
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246 | |
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247 | #ifndef EV_PID_HASHSIZE |
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248 | # if EV_MINIMAL |
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249 | # define EV_PID_HASHSIZE 1 |
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250 | # else |
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251 | # define EV_PID_HASHSIZE 16 |
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252 | # endif |
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253 | #endif |
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254 | |
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255 | #ifndef EV_INOTIFY_HASHSIZE |
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256 | # if EV_MINIMAL |
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257 | # define EV_INOTIFY_HASHSIZE 1 |
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258 | # else |
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259 | # define EV_INOTIFY_HASHSIZE 16 |
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260 | # endif |
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261 | #endif |
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262 | |
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263 | #ifndef EV_USE_EVENTFD |
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264 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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265 | # define EV_USE_EVENTFD 1 |
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266 | # else |
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267 | # define EV_USE_EVENTFD 0 |
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268 | # endif |
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269 | #endif |
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270 | |
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271 | #if 0 /* debugging */ |
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272 | # define EV_VERIFY 3 |
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273 | # define EV_USE_4HEAP 1 |
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274 | # define EV_HEAP_CACHE_AT 1 |
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275 | #endif |
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276 | |
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277 | #ifndef EV_VERIFY |
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278 | # define EV_VERIFY !EV_MINIMAL |
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279 | #endif |
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280 | |
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281 | #ifndef EV_USE_4HEAP |
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282 | # define EV_USE_4HEAP !EV_MINIMAL |
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283 | #endif |
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284 | |
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285 | #ifndef EV_HEAP_CACHE_AT |
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286 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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287 | #endif |
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288 | |
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289 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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290 | /* which makes programs even slower. might work on other unices, too. */ |
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291 | #if EV_USE_CLOCK_SYSCALL |
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292 | # include <syscall.h> |
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293 | # ifdef SYS_clock_gettime |
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294 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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295 | # undef EV_USE_MONOTONIC |
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296 | # define EV_USE_MONOTONIC 1 |
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297 | # else |
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298 | # undef EV_USE_CLOCK_SYSCALL |
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299 | # define EV_USE_CLOCK_SYSCALL 0 |
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300 | # endif |
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301 | #endif |
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302 | |
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303 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
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304 | |
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305 | #ifndef CLOCK_MONOTONIC |
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306 | # undef EV_USE_MONOTONIC |
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307 | # define EV_USE_MONOTONIC 0 |
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308 | #endif |
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309 | |
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310 | #ifndef CLOCK_REALTIME |
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311 | # undef EV_USE_REALTIME |
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312 | # define EV_USE_REALTIME 0 |
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313 | #endif |
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314 | |
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315 | #if !EV_STAT_ENABLE |
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316 | # undef EV_USE_INOTIFY |
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317 | # define EV_USE_INOTIFY 0 |
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318 | #endif |
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319 | |
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320 | #if !EV_USE_NANOSLEEP |
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321 | # ifndef _WIN32 |
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322 | # include <sys/select.h> |
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323 | # endif |
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324 | #endif |
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325 | |
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326 | #if EV_USE_INOTIFY |
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327 | # include <sys/utsname.h> |
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328 | # include <sys/statfs.h> |
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329 | # include <sys/inotify.h> |
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330 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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331 | # ifndef IN_DONT_FOLLOW |
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332 | # undef EV_USE_INOTIFY |
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333 | # define EV_USE_INOTIFY 0 |
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334 | # endif |
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335 | #endif |
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336 | |
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337 | #if EV_SELECT_IS_WINSOCKET |
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338 | # include <winsock.h> |
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339 | #endif |
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340 | |
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341 | #if EV_USE_EVENTFD |
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342 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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343 | # include <stdint.h> |
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344 | # ifdef __cplusplus |
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345 | extern "C" { |
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346 | # endif |
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347 | int eventfd (unsigned int initval, int flags); |
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348 | # ifdef __cplusplus |
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349 | } |
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350 | # endif |
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351 | #endif |
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352 | |
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353 | /**/ |
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354 | |
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355 | #if EV_VERIFY >= 3 |
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356 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
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357 | #else |
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358 | # define EV_FREQUENT_CHECK do { } while (0) |
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359 | #endif |
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360 | |
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361 | /* |
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362 | * This is used to avoid floating point rounding problems. |
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363 | * It is added to ev_rt_now when scheduling periodics |
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364 | * to ensure progress, time-wise, even when rounding |
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365 | * errors are against us. |
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366 | * This value is good at least till the year 4000. |
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367 | * Better solutions welcome. |
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368 | */ |
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369 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
63 | |
370 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
371 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
372 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
373 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
67 | |
374 | |
68 | #include "ev.h" |
375 | #if __GNUC__ >= 4 |
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376 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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377 | # define noinline __attribute__ ((noinline)) |
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378 | #else |
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379 | # define expect(expr,value) (expr) |
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380 | # define noinline |
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381 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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382 | # define inline |
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383 | # endif |
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384 | #endif |
69 | |
385 | |
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386 | #define expect_false(expr) expect ((expr) != 0, 0) |
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387 | #define expect_true(expr) expect ((expr) != 0, 1) |
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388 | #define inline_size static inline |
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389 | |
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390 | #if EV_MINIMAL |
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391 | # define inline_speed static noinline |
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392 | #else |
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393 | # define inline_speed static inline |
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394 | #endif |
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395 | |
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396 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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397 | |
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398 | #if EV_MINPRI == EV_MAXPRI |
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399 | # define ABSPRI(w) (((W)w), 0) |
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400 | #else |
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401 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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402 | #endif |
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403 | |
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404 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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405 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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406 | |
70 | typedef struct ev_watcher *W; |
407 | typedef ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
408 | typedef ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
409 | typedef ev_watcher_time *WT; |
73 | |
410 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
411 | #define ev_active(w) ((W)(w))->active |
75 | ev_tstamp ev_now; |
412 | #define ev_at(w) ((WT)(w))->at |
76 | int ev_method; |
|
|
77 | |
413 | |
78 | static int have_monotonic; /* runtime */ |
414 | #if EV_USE_REALTIME |
|
|
415 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
416 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
417 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
418 | #endif |
79 | |
419 | |
80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
420 | #if EV_USE_MONOTONIC |
81 | static void (*method_modify)(int fd, int oev, int nev); |
421 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
82 | static void (*method_poll)(ev_tstamp timeout); |
422 | #endif |
|
|
423 | |
|
|
424 | #ifdef _WIN32 |
|
|
425 | # include "ev_win32.c" |
|
|
426 | #endif |
83 | |
427 | |
84 | /*****************************************************************************/ |
428 | /*****************************************************************************/ |
85 | |
429 | |
|
|
430 | static void (*syserr_cb)(const char *msg); |
|
|
431 | |
|
|
432 | void |
|
|
433 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
434 | { |
|
|
435 | syserr_cb = cb; |
|
|
436 | } |
|
|
437 | |
|
|
438 | static void noinline |
|
|
439 | ev_syserr (const char *msg) |
|
|
440 | { |
|
|
441 | if (!msg) |
|
|
442 | msg = "(libev) system error"; |
|
|
443 | |
|
|
444 | if (syserr_cb) |
|
|
445 | syserr_cb (msg); |
|
|
446 | else |
|
|
447 | { |
|
|
448 | perror (msg); |
|
|
449 | abort (); |
|
|
450 | } |
|
|
451 | } |
|
|
452 | |
|
|
453 | static void * |
|
|
454 | ev_realloc_emul (void *ptr, long size) |
|
|
455 | { |
|
|
456 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
457 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
458 | * the single unix specification, so work around them here. |
|
|
459 | */ |
|
|
460 | |
|
|
461 | if (size) |
|
|
462 | return realloc (ptr, size); |
|
|
463 | |
|
|
464 | free (ptr); |
|
|
465 | return 0; |
|
|
466 | } |
|
|
467 | |
|
|
468 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
469 | |
|
|
470 | void |
|
|
471 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
472 | { |
|
|
473 | alloc = cb; |
|
|
474 | } |
|
|
475 | |
|
|
476 | inline_speed void * |
|
|
477 | ev_realloc (void *ptr, long size) |
|
|
478 | { |
|
|
479 | ptr = alloc (ptr, size); |
|
|
480 | |
|
|
481 | if (!ptr && size) |
|
|
482 | { |
|
|
483 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
484 | abort (); |
|
|
485 | } |
|
|
486 | |
|
|
487 | return ptr; |
|
|
488 | } |
|
|
489 | |
|
|
490 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
491 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
492 | |
|
|
493 | /*****************************************************************************/ |
|
|
494 | |
|
|
495 | /* set in reify when reification needed */ |
|
|
496 | #define EV_ANFD_REIFY 1 |
|
|
497 | |
|
|
498 | /* file descriptor info structure */ |
|
|
499 | typedef struct |
|
|
500 | { |
|
|
501 | WL head; |
|
|
502 | unsigned char events; /* the events watched for */ |
|
|
503 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
504 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
505 | unsigned char unused; |
|
|
506 | #if EV_USE_EPOLL |
|
|
507 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
508 | #endif |
|
|
509 | #if EV_SELECT_IS_WINSOCKET |
|
|
510 | SOCKET handle; |
|
|
511 | #endif |
|
|
512 | } ANFD; |
|
|
513 | |
|
|
514 | /* stores the pending event set for a given watcher */ |
|
|
515 | typedef struct |
|
|
516 | { |
|
|
517 | W w; |
|
|
518 | int events; /* the pending event set for the given watcher */ |
|
|
519 | } ANPENDING; |
|
|
520 | |
|
|
521 | #if EV_USE_INOTIFY |
|
|
522 | /* hash table entry per inotify-id */ |
|
|
523 | typedef struct |
|
|
524 | { |
|
|
525 | WL head; |
|
|
526 | } ANFS; |
|
|
527 | #endif |
|
|
528 | |
|
|
529 | /* Heap Entry */ |
|
|
530 | #if EV_HEAP_CACHE_AT |
|
|
531 | /* a heap element */ |
|
|
532 | typedef struct { |
|
|
533 | ev_tstamp at; |
|
|
534 | WT w; |
|
|
535 | } ANHE; |
|
|
536 | |
|
|
537 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
538 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
539 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
540 | #else |
|
|
541 | /* a heap element */ |
|
|
542 | typedef WT ANHE; |
|
|
543 | |
|
|
544 | #define ANHE_w(he) (he) |
|
|
545 | #define ANHE_at(he) (he)->at |
|
|
546 | #define ANHE_at_cache(he) |
|
|
547 | #endif |
|
|
548 | |
|
|
549 | #if EV_MULTIPLICITY |
|
|
550 | |
|
|
551 | struct ev_loop |
|
|
552 | { |
|
|
553 | ev_tstamp ev_rt_now; |
|
|
554 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
555 | #define VAR(name,decl) decl; |
|
|
556 | #include "ev_vars.h" |
|
|
557 | #undef VAR |
|
|
558 | }; |
|
|
559 | #include "ev_wrap.h" |
|
|
560 | |
|
|
561 | static struct ev_loop default_loop_struct; |
|
|
562 | struct ev_loop *ev_default_loop_ptr; |
|
|
563 | |
|
|
564 | #else |
|
|
565 | |
|
|
566 | ev_tstamp ev_rt_now; |
|
|
567 | #define VAR(name,decl) static decl; |
|
|
568 | #include "ev_vars.h" |
|
|
569 | #undef VAR |
|
|
570 | |
|
|
571 | static int ev_default_loop_ptr; |
|
|
572 | |
|
|
573 | #endif |
|
|
574 | |
|
|
575 | #if EV_MINIMAL < 2 |
|
|
576 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
577 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
578 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
579 | #else |
|
|
580 | # define EV_RELEASE_CB (void)0 |
|
|
581 | # define EV_ACQUIRE_CB (void)0 |
|
|
582 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
583 | #endif |
|
|
584 | |
|
|
585 | #define EVUNLOOP_RECURSE 0x80 |
|
|
586 | |
|
|
587 | /*****************************************************************************/ |
|
|
588 | |
|
|
589 | #ifndef EV_HAVE_EV_TIME |
86 | ev_tstamp |
590 | ev_tstamp |
87 | ev_time (void) |
591 | ev_time (void) |
88 | { |
592 | { |
89 | #if HAVE_REALTIME |
593 | #if EV_USE_REALTIME |
|
|
594 | if (expect_true (have_realtime)) |
|
|
595 | { |
90 | struct timespec ts; |
596 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
597 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
598 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
599 | } |
|
|
600 | #endif |
|
|
601 | |
94 | struct timeval tv; |
602 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
603 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
604 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
|
|
98 | } |
605 | } |
|
|
606 | #endif |
99 | |
607 | |
100 | static ev_tstamp |
608 | inline_size ev_tstamp |
101 | get_clock (void) |
609 | get_clock (void) |
102 | { |
610 | { |
103 | #if HAVE_MONOTONIC |
611 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
612 | if (expect_true (have_monotonic)) |
105 | { |
613 | { |
106 | struct timespec ts; |
614 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
615 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
616 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
617 | } |
110 | #endif |
618 | #endif |
111 | |
619 | |
112 | return ev_time (); |
620 | return ev_time (); |
113 | } |
621 | } |
114 | |
622 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
623 | #if EV_MULTIPLICITY |
116 | if ((cnt) > cur) \ |
624 | ev_tstamp |
117 | { \ |
625 | ev_now (EV_P) |
118 | int newcnt = cur; \ |
626 | { |
119 | do \ |
627 | return ev_rt_now; |
120 | { \ |
628 | } |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
629 | #endif |
122 | } \ |
630 | |
123 | while ((cnt) > newcnt); \ |
631 | void |
124 | \ |
632 | ev_sleep (ev_tstamp delay) |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
633 | { |
126 | init (base + cur, newcnt - cur); \ |
634 | if (delay > 0.) |
127 | cur = newcnt; \ |
|
|
128 | } |
635 | { |
|
|
636 | #if EV_USE_NANOSLEEP |
|
|
637 | struct timespec ts; |
|
|
638 | |
|
|
639 | ts.tv_sec = (time_t)delay; |
|
|
640 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
641 | |
|
|
642 | nanosleep (&ts, 0); |
|
|
643 | #elif defined(_WIN32) |
|
|
644 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
645 | #else |
|
|
646 | struct timeval tv; |
|
|
647 | |
|
|
648 | tv.tv_sec = (time_t)delay; |
|
|
649 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
650 | |
|
|
651 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
652 | /* somehting not guaranteed by newer posix versions, but guaranteed */ |
|
|
653 | /* by older ones */ |
|
|
654 | select (0, 0, 0, 0, &tv); |
|
|
655 | #endif |
|
|
656 | } |
|
|
657 | } |
129 | |
658 | |
130 | /*****************************************************************************/ |
659 | /*****************************************************************************/ |
131 | |
660 | |
|
|
661 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
662 | |
|
|
663 | /* find a suitable new size for the given array, */ |
|
|
664 | /* hopefully by rounding to a ncie-to-malloc size */ |
|
|
665 | inline_size int |
|
|
666 | array_nextsize (int elem, int cur, int cnt) |
|
|
667 | { |
|
|
668 | int ncur = cur + 1; |
|
|
669 | |
|
|
670 | do |
|
|
671 | ncur <<= 1; |
|
|
672 | while (cnt > ncur); |
|
|
673 | |
|
|
674 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
675 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
676 | { |
|
|
677 | ncur *= elem; |
|
|
678 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
679 | ncur = ncur - sizeof (void *) * 4; |
|
|
680 | ncur /= elem; |
|
|
681 | } |
|
|
682 | |
|
|
683 | return ncur; |
|
|
684 | } |
|
|
685 | |
|
|
686 | static noinline void * |
|
|
687 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
688 | { |
|
|
689 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
690 | return ev_realloc (base, elem * *cur); |
|
|
691 | } |
|
|
692 | |
|
|
693 | #define array_init_zero(base,count) \ |
|
|
694 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
695 | |
|
|
696 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
697 | if (expect_false ((cnt) > (cur))) \ |
|
|
698 | { \ |
|
|
699 | int ocur_ = (cur); \ |
|
|
700 | (base) = (type *)array_realloc \ |
|
|
701 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
702 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
703 | } |
|
|
704 | |
|
|
705 | #if 0 |
|
|
706 | #define array_slim(type,stem) \ |
|
|
707 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
708 | { \ |
|
|
709 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
710 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
711 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
712 | } |
|
|
713 | #endif |
|
|
714 | |
|
|
715 | #define array_free(stem, idx) \ |
|
|
716 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
717 | |
|
|
718 | /*****************************************************************************/ |
|
|
719 | |
|
|
720 | /* dummy callback for pending events */ |
|
|
721 | static void noinline |
|
|
722 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
723 | { |
|
|
724 | } |
|
|
725 | |
|
|
726 | void noinline |
|
|
727 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
728 | { |
|
|
729 | W w_ = (W)w; |
|
|
730 | int pri = ABSPRI (w_); |
|
|
731 | |
|
|
732 | if (expect_false (w_->pending)) |
|
|
733 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
734 | else |
|
|
735 | { |
|
|
736 | w_->pending = ++pendingcnt [pri]; |
|
|
737 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
738 | pendings [pri][w_->pending - 1].w = w_; |
|
|
739 | pendings [pri][w_->pending - 1].events = revents; |
|
|
740 | } |
|
|
741 | } |
|
|
742 | |
|
|
743 | inline_speed void |
|
|
744 | feed_reverse (EV_P_ W w) |
|
|
745 | { |
|
|
746 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
747 | rfeeds [rfeedcnt++] = w; |
|
|
748 | } |
|
|
749 | |
|
|
750 | inline_size void |
|
|
751 | feed_reverse_done (EV_P_ int revents) |
|
|
752 | { |
|
|
753 | do |
|
|
754 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
755 | while (rfeedcnt); |
|
|
756 | } |
|
|
757 | |
|
|
758 | inline_speed void |
|
|
759 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
760 | { |
|
|
761 | int i; |
|
|
762 | |
|
|
763 | for (i = 0; i < eventcnt; ++i) |
|
|
764 | ev_feed_event (EV_A_ events [i], type); |
|
|
765 | } |
|
|
766 | |
|
|
767 | /*****************************************************************************/ |
|
|
768 | |
|
|
769 | inline_speed void |
|
|
770 | fd_event_nc (EV_P_ int fd, int revents) |
|
|
771 | { |
|
|
772 | ANFD *anfd = anfds + fd; |
|
|
773 | ev_io *w; |
|
|
774 | |
|
|
775 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
776 | { |
|
|
777 | int ev = w->events & revents; |
|
|
778 | |
|
|
779 | if (ev) |
|
|
780 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
781 | } |
|
|
782 | } |
|
|
783 | |
|
|
784 | /* do not submit kernel events for fds that have reify set */ |
|
|
785 | /* because that means they changed while we were polling for new events */ |
|
|
786 | inline_speed void |
|
|
787 | fd_event (EV_P_ int fd, int revents) |
|
|
788 | { |
|
|
789 | ANFD *anfd = anfds + fd; |
|
|
790 | |
|
|
791 | if (expect_true (!anfd->reify)) |
|
|
792 | fd_event_nc (EV_A_ fd, revents); |
|
|
793 | } |
|
|
794 | |
|
|
795 | void |
|
|
796 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
797 | { |
|
|
798 | if (fd >= 0 && fd < anfdmax) |
|
|
799 | fd_event_nc (EV_A_ fd, revents); |
|
|
800 | } |
|
|
801 | |
|
|
802 | /* make sure the external fd watch events are in-sync */ |
|
|
803 | /* with the kernel/libev internal state */ |
|
|
804 | inline_size void |
|
|
805 | fd_reify (EV_P) |
|
|
806 | { |
|
|
807 | int i; |
|
|
808 | |
|
|
809 | for (i = 0; i < fdchangecnt; ++i) |
|
|
810 | { |
|
|
811 | int fd = fdchanges [i]; |
|
|
812 | ANFD *anfd = anfds + fd; |
|
|
813 | ev_io *w; |
|
|
814 | |
|
|
815 | unsigned char events = 0; |
|
|
816 | |
|
|
817 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
818 | events |= (unsigned char)w->events; |
|
|
819 | |
|
|
820 | #if EV_SELECT_IS_WINSOCKET |
|
|
821 | if (events) |
|
|
822 | { |
|
|
823 | unsigned long arg; |
|
|
824 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
825 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
826 | #else |
|
|
827 | anfd->handle = _get_osfhandle (fd); |
|
|
828 | #endif |
|
|
829 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
830 | } |
|
|
831 | #endif |
|
|
832 | |
|
|
833 | { |
|
|
834 | unsigned char o_events = anfd->events; |
|
|
835 | unsigned char o_reify = anfd->reify; |
|
|
836 | |
|
|
837 | anfd->reify = 0; |
|
|
838 | anfd->events = events; |
|
|
839 | |
|
|
840 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
841 | backend_modify (EV_A_ fd, o_events, events); |
|
|
842 | } |
|
|
843 | } |
|
|
844 | |
|
|
845 | fdchangecnt = 0; |
|
|
846 | } |
|
|
847 | |
|
|
848 | /* something about the given fd changed */ |
|
|
849 | inline_size void |
|
|
850 | fd_change (EV_P_ int fd, int flags) |
|
|
851 | { |
|
|
852 | unsigned char reify = anfds [fd].reify; |
|
|
853 | anfds [fd].reify |= flags; |
|
|
854 | |
|
|
855 | if (expect_true (!reify)) |
|
|
856 | { |
|
|
857 | ++fdchangecnt; |
|
|
858 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
859 | fdchanges [fdchangecnt - 1] = fd; |
|
|
860 | } |
|
|
861 | } |
|
|
862 | |
|
|
863 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
864 | inline_speed void |
|
|
865 | fd_kill (EV_P_ int fd) |
|
|
866 | { |
|
|
867 | ev_io *w; |
|
|
868 | |
|
|
869 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
870 | { |
|
|
871 | ev_io_stop (EV_A_ w); |
|
|
872 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
873 | } |
|
|
874 | } |
|
|
875 | |
|
|
876 | /* check whether the given fd is atcually valid, for error recovery */ |
|
|
877 | inline_size int |
|
|
878 | fd_valid (int fd) |
|
|
879 | { |
|
|
880 | #ifdef _WIN32 |
|
|
881 | return _get_osfhandle (fd) != -1; |
|
|
882 | #else |
|
|
883 | return fcntl (fd, F_GETFD) != -1; |
|
|
884 | #endif |
|
|
885 | } |
|
|
886 | |
|
|
887 | /* called on EBADF to verify fds */ |
|
|
888 | static void noinline |
|
|
889 | fd_ebadf (EV_P) |
|
|
890 | { |
|
|
891 | int fd; |
|
|
892 | |
|
|
893 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
894 | if (anfds [fd].events) |
|
|
895 | if (!fd_valid (fd) && errno == EBADF) |
|
|
896 | fd_kill (EV_A_ fd); |
|
|
897 | } |
|
|
898 | |
|
|
899 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
900 | static void noinline |
|
|
901 | fd_enomem (EV_P) |
|
|
902 | { |
|
|
903 | int fd; |
|
|
904 | |
|
|
905 | for (fd = anfdmax; fd--; ) |
|
|
906 | if (anfds [fd].events) |
|
|
907 | { |
|
|
908 | fd_kill (EV_A_ fd); |
|
|
909 | return; |
|
|
910 | } |
|
|
911 | } |
|
|
912 | |
|
|
913 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
914 | static void noinline |
|
|
915 | fd_rearm_all (EV_P) |
|
|
916 | { |
|
|
917 | int fd; |
|
|
918 | |
|
|
919 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
920 | if (anfds [fd].events) |
|
|
921 | { |
|
|
922 | anfds [fd].events = 0; |
|
|
923 | anfds [fd].emask = 0; |
|
|
924 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
|
|
925 | } |
|
|
926 | } |
|
|
927 | |
|
|
928 | /*****************************************************************************/ |
|
|
929 | |
|
|
930 | /* |
|
|
931 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
932 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
933 | * the branching factor of the d-tree. |
|
|
934 | */ |
|
|
935 | |
|
|
936 | /* |
|
|
937 | * at the moment we allow libev the luxury of two heaps, |
|
|
938 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
939 | * which is more cache-efficient. |
|
|
940 | * the difference is about 5% with 50000+ watchers. |
|
|
941 | */ |
|
|
942 | #if EV_USE_4HEAP |
|
|
943 | |
|
|
944 | #define DHEAP 4 |
|
|
945 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
946 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
947 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
948 | |
|
|
949 | /* away from the root */ |
|
|
950 | inline_speed void |
|
|
951 | downheap (ANHE *heap, int N, int k) |
|
|
952 | { |
|
|
953 | ANHE he = heap [k]; |
|
|
954 | ANHE *E = heap + N + HEAP0; |
|
|
955 | |
|
|
956 | for (;;) |
|
|
957 | { |
|
|
958 | ev_tstamp minat; |
|
|
959 | ANHE *minpos; |
|
|
960 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
961 | |
|
|
962 | /* find minimum child */ |
|
|
963 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
964 | { |
|
|
965 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
966 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
967 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
968 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
969 | } |
|
|
970 | else if (pos < E) |
|
|
971 | { |
|
|
972 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
973 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
974 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
975 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
976 | } |
|
|
977 | else |
|
|
978 | break; |
|
|
979 | |
|
|
980 | if (ANHE_at (he) <= minat) |
|
|
981 | break; |
|
|
982 | |
|
|
983 | heap [k] = *minpos; |
|
|
984 | ev_active (ANHE_w (*minpos)) = k; |
|
|
985 | |
|
|
986 | k = minpos - heap; |
|
|
987 | } |
|
|
988 | |
|
|
989 | heap [k] = he; |
|
|
990 | ev_active (ANHE_w (he)) = k; |
|
|
991 | } |
|
|
992 | |
|
|
993 | #else /* 4HEAP */ |
|
|
994 | |
|
|
995 | #define HEAP0 1 |
|
|
996 | #define HPARENT(k) ((k) >> 1) |
|
|
997 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
998 | |
|
|
999 | /* away from the root */ |
|
|
1000 | inline_speed void |
|
|
1001 | downheap (ANHE *heap, int N, int k) |
|
|
1002 | { |
|
|
1003 | ANHE he = heap [k]; |
|
|
1004 | |
|
|
1005 | for (;;) |
|
|
1006 | { |
|
|
1007 | int c = k << 1; |
|
|
1008 | |
|
|
1009 | if (c > N + HEAP0 - 1) |
|
|
1010 | break; |
|
|
1011 | |
|
|
1012 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1013 | ? 1 : 0; |
|
|
1014 | |
|
|
1015 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1016 | break; |
|
|
1017 | |
|
|
1018 | heap [k] = heap [c]; |
|
|
1019 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1020 | |
|
|
1021 | k = c; |
|
|
1022 | } |
|
|
1023 | |
|
|
1024 | heap [k] = he; |
|
|
1025 | ev_active (ANHE_w (he)) = k; |
|
|
1026 | } |
|
|
1027 | #endif |
|
|
1028 | |
|
|
1029 | /* towards the root */ |
|
|
1030 | inline_speed void |
|
|
1031 | upheap (ANHE *heap, int k) |
|
|
1032 | { |
|
|
1033 | ANHE he = heap [k]; |
|
|
1034 | |
|
|
1035 | for (;;) |
|
|
1036 | { |
|
|
1037 | int p = HPARENT (k); |
|
|
1038 | |
|
|
1039 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1040 | break; |
|
|
1041 | |
|
|
1042 | heap [k] = heap [p]; |
|
|
1043 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1044 | k = p; |
|
|
1045 | } |
|
|
1046 | |
|
|
1047 | heap [k] = he; |
|
|
1048 | ev_active (ANHE_w (he)) = k; |
|
|
1049 | } |
|
|
1050 | |
|
|
1051 | /* move an element suitably so it is in a correct place */ |
|
|
1052 | inline_size void |
|
|
1053 | adjustheap (ANHE *heap, int N, int k) |
|
|
1054 | { |
|
|
1055 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
|
|
1056 | upheap (heap, k); |
|
|
1057 | else |
|
|
1058 | downheap (heap, N, k); |
|
|
1059 | } |
|
|
1060 | |
|
|
1061 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1062 | inline_size void |
|
|
1063 | reheap (ANHE *heap, int N) |
|
|
1064 | { |
|
|
1065 | int i; |
|
|
1066 | |
|
|
1067 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1068 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1069 | for (i = 0; i < N; ++i) |
|
|
1070 | upheap (heap, i + HEAP0); |
|
|
1071 | } |
|
|
1072 | |
|
|
1073 | /*****************************************************************************/ |
|
|
1074 | |
|
|
1075 | /* associate signal watchers to a signal signal */ |
132 | typedef struct |
1076 | typedef struct |
133 | { |
1077 | { |
134 | struct ev_io *head; |
1078 | WL head; |
135 | unsigned char wev, rev; /* want, received event set */ |
1079 | EV_ATOMIC_T gotsig; |
136 | } ANFD; |
|
|
137 | |
|
|
138 | static ANFD *anfds; |
|
|
139 | static int anfdmax; |
|
|
140 | |
|
|
141 | static int *fdchanges; |
|
|
142 | static int fdchangemax, fdchangecnt; |
|
|
143 | |
|
|
144 | static void |
|
|
145 | anfds_init (ANFD *base, int count) |
|
|
146 | { |
|
|
147 | while (count--) |
|
|
148 | { |
|
|
149 | base->head = 0; |
|
|
150 | base->wev = base->rev = EV_NONE; |
|
|
151 | ++base; |
|
|
152 | } |
|
|
153 | } |
|
|
154 | |
|
|
155 | typedef struct |
|
|
156 | { |
|
|
157 | W w; |
|
|
158 | int events; |
|
|
159 | } ANPENDING; |
|
|
160 | |
|
|
161 | static ANPENDING *pendings; |
|
|
162 | static int pendingmax, pendingcnt; |
|
|
163 | |
|
|
164 | static void |
|
|
165 | event (W w, int events) |
|
|
166 | { |
|
|
167 | if (w->active) |
|
|
168 | { |
|
|
169 | w->pending = ++pendingcnt; |
|
|
170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
171 | pendings [pendingcnt - 1].w = w; |
|
|
172 | pendings [pendingcnt - 1].events = events; |
|
|
173 | } |
|
|
174 | } |
|
|
175 | |
|
|
176 | static void |
|
|
177 | fd_event (int fd, int events) |
|
|
178 | { |
|
|
179 | ANFD *anfd = anfds + fd; |
|
|
180 | struct ev_io *w; |
|
|
181 | |
|
|
182 | for (w = anfd->head; w; w = w->next) |
|
|
183 | { |
|
|
184 | int ev = w->events & events; |
|
|
185 | |
|
|
186 | if (ev) |
|
|
187 | event ((W)w, ev); |
|
|
188 | } |
|
|
189 | } |
|
|
190 | |
|
|
191 | static void |
|
|
192 | queue_events (W *events, int eventcnt, int type) |
|
|
193 | { |
|
|
194 | int i; |
|
|
195 | |
|
|
196 | for (i = 0; i < eventcnt; ++i) |
|
|
197 | event (events [i], type); |
|
|
198 | } |
|
|
199 | |
|
|
200 | /* called on EBADF to verify fds */ |
|
|
201 | static void |
|
|
202 | fd_recheck () |
|
|
203 | { |
|
|
204 | int fd; |
|
|
205 | |
|
|
206 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
207 | if (anfds [fd].wev) |
|
|
208 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
|
|
209 | while (anfds [fd].head) |
|
|
210 | evio_stop (anfds [fd].head); |
|
|
211 | } |
|
|
212 | |
|
|
213 | /*****************************************************************************/ |
|
|
214 | |
|
|
215 | static struct ev_timer **timers; |
|
|
216 | static int timermax, timercnt; |
|
|
217 | |
|
|
218 | static struct ev_periodic **periodics; |
|
|
219 | static int periodicmax, periodiccnt; |
|
|
220 | |
|
|
221 | static void |
|
|
222 | upheap (WT *timers, int k) |
|
|
223 | { |
|
|
224 | WT w = timers [k]; |
|
|
225 | |
|
|
226 | while (k && timers [k >> 1]->at > w->at) |
|
|
227 | { |
|
|
228 | timers [k] = timers [k >> 1]; |
|
|
229 | timers [k]->active = k + 1; |
|
|
230 | k >>= 1; |
|
|
231 | } |
|
|
232 | |
|
|
233 | timers [k] = w; |
|
|
234 | timers [k]->active = k + 1; |
|
|
235 | |
|
|
236 | } |
|
|
237 | |
|
|
238 | static void |
|
|
239 | downheap (WT *timers, int N, int k) |
|
|
240 | { |
|
|
241 | WT w = timers [k]; |
|
|
242 | |
|
|
243 | while (k < (N >> 1)) |
|
|
244 | { |
|
|
245 | int j = k << 1; |
|
|
246 | |
|
|
247 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
248 | ++j; |
|
|
249 | |
|
|
250 | if (w->at <= timers [j]->at) |
|
|
251 | break; |
|
|
252 | |
|
|
253 | timers [k] = timers [j]; |
|
|
254 | timers [k]->active = k + 1; |
|
|
255 | k = j; |
|
|
256 | } |
|
|
257 | |
|
|
258 | timers [k] = w; |
|
|
259 | timers [k]->active = k + 1; |
|
|
260 | } |
|
|
261 | |
|
|
262 | /*****************************************************************************/ |
|
|
263 | |
|
|
264 | typedef struct |
|
|
265 | { |
|
|
266 | struct ev_signal *head; |
|
|
267 | sig_atomic_t gotsig; |
|
|
268 | } ANSIG; |
1080 | } ANSIG; |
269 | |
1081 | |
270 | static ANSIG *signals; |
1082 | static ANSIG *signals; |
271 | static int signalmax; |
1083 | static int signalmax; |
272 | |
1084 | |
273 | static int sigpipe [2]; |
1085 | static EV_ATOMIC_T gotsig; |
274 | static sig_atomic_t gotsig; |
|
|
275 | static struct ev_io sigev; |
|
|
276 | |
1086 | |
|
|
1087 | /*****************************************************************************/ |
|
|
1088 | |
|
|
1089 | /* used to prepare libev internal fd's */ |
|
|
1090 | /* this is not fork-safe */ |
|
|
1091 | inline_speed void |
|
|
1092 | fd_intern (int fd) |
|
|
1093 | { |
|
|
1094 | #ifdef _WIN32 |
|
|
1095 | unsigned long arg = 1; |
|
|
1096 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
1097 | #else |
|
|
1098 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1099 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1100 | #endif |
|
|
1101 | } |
|
|
1102 | |
|
|
1103 | static void noinline |
|
|
1104 | evpipe_init (EV_P) |
|
|
1105 | { |
|
|
1106 | if (!ev_is_active (&pipe_w)) |
|
|
1107 | { |
|
|
1108 | #if EV_USE_EVENTFD |
|
|
1109 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
1110 | { |
|
|
1111 | evpipe [0] = -1; |
|
|
1112 | fd_intern (evfd); |
|
|
1113 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1114 | } |
|
|
1115 | else |
|
|
1116 | #endif |
|
|
1117 | { |
|
|
1118 | while (pipe (evpipe)) |
|
|
1119 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1120 | |
|
|
1121 | fd_intern (evpipe [0]); |
|
|
1122 | fd_intern (evpipe [1]); |
|
|
1123 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | ev_io_start (EV_A_ &pipe_w); |
|
|
1127 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1128 | } |
|
|
1129 | } |
|
|
1130 | |
|
|
1131 | inline_size void |
|
|
1132 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1133 | { |
|
|
1134 | if (!*flag) |
|
|
1135 | { |
|
|
1136 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1137 | |
|
|
1138 | *flag = 1; |
|
|
1139 | |
|
|
1140 | #if EV_USE_EVENTFD |
|
|
1141 | if (evfd >= 0) |
|
|
1142 | { |
|
|
1143 | uint64_t counter = 1; |
|
|
1144 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1145 | } |
|
|
1146 | else |
|
|
1147 | #endif |
|
|
1148 | write (evpipe [1], &old_errno, 1); |
|
|
1149 | |
|
|
1150 | errno = old_errno; |
|
|
1151 | } |
|
|
1152 | } |
|
|
1153 | |
|
|
1154 | /* called whenever the libev signal pipe */ |
|
|
1155 | /* got some events (signal, async) */ |
277 | static void |
1156 | static void |
278 | signals_init (ANSIG *base, int count) |
1157 | pipecb (EV_P_ ev_io *iow, int revents) |
279 | { |
1158 | { |
280 | while (count--) |
1159 | #if EV_USE_EVENTFD |
|
|
1160 | if (evfd >= 0) |
|
|
1161 | { |
|
|
1162 | uint64_t counter; |
|
|
1163 | read (evfd, &counter, sizeof (uint64_t)); |
281 | { |
1164 | } |
282 | base->head = 0; |
1165 | else |
|
|
1166 | #endif |
|
|
1167 | { |
|
|
1168 | char dummy; |
|
|
1169 | read (evpipe [0], &dummy, 1); |
|
|
1170 | } |
|
|
1171 | |
|
|
1172 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1173 | { |
|
|
1174 | int signum; |
283 | base->gotsig = 0; |
1175 | gotsig = 0; |
284 | ++base; |
1176 | |
|
|
1177 | for (signum = signalmax; signum--; ) |
|
|
1178 | if (signals [signum].gotsig) |
|
|
1179 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1180 | } |
|
|
1181 | |
|
|
1182 | #if EV_ASYNC_ENABLE |
|
|
1183 | if (gotasync) |
285 | } |
1184 | { |
|
|
1185 | int i; |
|
|
1186 | gotasync = 0; |
|
|
1187 | |
|
|
1188 | for (i = asynccnt; i--; ) |
|
|
1189 | if (asyncs [i]->sent) |
|
|
1190 | { |
|
|
1191 | asyncs [i]->sent = 0; |
|
|
1192 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1193 | } |
|
|
1194 | } |
|
|
1195 | #endif |
286 | } |
1196 | } |
|
|
1197 | |
|
|
1198 | /*****************************************************************************/ |
287 | |
1199 | |
288 | static void |
1200 | static void |
289 | sighandler (int signum) |
1201 | ev_sighandler (int signum) |
290 | { |
1202 | { |
|
|
1203 | #if EV_MULTIPLICITY |
|
|
1204 | struct ev_loop *loop = &default_loop_struct; |
|
|
1205 | #endif |
|
|
1206 | |
|
|
1207 | #if _WIN32 |
|
|
1208 | signal (signum, ev_sighandler); |
|
|
1209 | #endif |
|
|
1210 | |
291 | signals [signum - 1].gotsig = 1; |
1211 | signals [signum - 1].gotsig = 1; |
292 | |
1212 | evpipe_write (EV_A_ &gotsig); |
293 | if (!gotsig) |
|
|
294 | { |
|
|
295 | gotsig = 1; |
|
|
296 | write (sigpipe [1], &gotsig, 1); |
|
|
297 | } |
|
|
298 | } |
1213 | } |
299 | |
1214 | |
300 | static void |
1215 | void noinline |
301 | sigcb (struct ev_io *iow, int revents) |
1216 | ev_feed_signal_event (EV_P_ int signum) |
302 | { |
1217 | { |
303 | struct ev_signal *w; |
1218 | WL w; |
304 | int sig; |
|
|
305 | |
1219 | |
306 | gotsig = 0; |
1220 | #if EV_MULTIPLICITY |
307 | read (sigpipe [0], &revents, 1); |
1221 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1222 | #endif |
308 | |
1223 | |
309 | for (sig = signalmax; sig--; ) |
1224 | --signum; |
310 | if (signals [sig].gotsig) |
1225 | |
311 | { |
1226 | if (signum < 0 || signum >= signalmax) |
|
|
1227 | return; |
|
|
1228 | |
312 | signals [sig].gotsig = 0; |
1229 | signals [signum].gotsig = 0; |
313 | |
1230 | |
314 | for (w = signals [sig].head; w; w = w->next) |
1231 | for (w = signals [signum].head; w; w = w->next) |
315 | event ((W)w, EV_SIGNAL); |
1232 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
316 | } |
|
|
317 | } |
|
|
318 | |
|
|
319 | static void |
|
|
320 | siginit (void) |
|
|
321 | { |
|
|
322 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
323 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
324 | |
|
|
325 | /* rather than sort out wether we really need nb, set it */ |
|
|
326 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
327 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
328 | |
|
|
329 | evio_set (&sigev, sigpipe [0], EV_READ); |
|
|
330 | evio_start (&sigev); |
|
|
331 | } |
1233 | } |
332 | |
1234 | |
333 | /*****************************************************************************/ |
1235 | /*****************************************************************************/ |
334 | |
1236 | |
335 | static struct ev_idle **idles; |
1237 | static WL childs [EV_PID_HASHSIZE]; |
336 | static int idlemax, idlecnt; |
|
|
337 | |
1238 | |
338 | static struct ev_prepare **prepares; |
1239 | #ifndef _WIN32 |
339 | static int preparemax, preparecnt; |
|
|
340 | |
1240 | |
341 | static struct ev_check **checks; |
|
|
342 | static int checkmax, checkcnt; |
|
|
343 | |
|
|
344 | /*****************************************************************************/ |
|
|
345 | |
|
|
346 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
347 | static struct ev_signal childev; |
1241 | static ev_signal childev; |
|
|
1242 | |
|
|
1243 | #ifndef WIFCONTINUED |
|
|
1244 | # define WIFCONTINUED(status) 0 |
|
|
1245 | #endif |
|
|
1246 | |
|
|
1247 | /* handle a single child status event */ |
|
|
1248 | inline_speed void |
|
|
1249 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1250 | { |
|
|
1251 | ev_child *w; |
|
|
1252 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1253 | |
|
|
1254 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1255 | { |
|
|
1256 | if ((w->pid == pid || !w->pid) |
|
|
1257 | && (!traced || (w->flags & 1))) |
|
|
1258 | { |
|
|
1259 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1260 | w->rpid = pid; |
|
|
1261 | w->rstatus = status; |
|
|
1262 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1263 | } |
|
|
1264 | } |
|
|
1265 | } |
348 | |
1266 | |
349 | #ifndef WCONTINUED |
1267 | #ifndef WCONTINUED |
350 | # define WCONTINUED 0 |
1268 | # define WCONTINUED 0 |
351 | #endif |
1269 | #endif |
352 | |
1270 | |
|
|
1271 | /* called on sigchld etc., calls waitpid */ |
353 | static void |
1272 | static void |
354 | childcb (struct ev_signal *sw, int revents) |
1273 | childcb (EV_P_ ev_signal *sw, int revents) |
355 | { |
1274 | { |
356 | struct ev_child *w; |
|
|
357 | int pid, status; |
1275 | int pid, status; |
358 | |
1276 | |
|
|
1277 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
359 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
1278 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
360 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
1279 | if (!WCONTINUED |
361 | if (w->pid == pid || w->pid == -1) |
1280 | || errno != EINVAL |
|
|
1281 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1282 | return; |
|
|
1283 | |
|
|
1284 | /* make sure we are called again until all children have been reaped */ |
|
|
1285 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1286 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1287 | |
|
|
1288 | child_reap (EV_A_ pid, pid, status); |
|
|
1289 | if (EV_PID_HASHSIZE > 1) |
|
|
1290 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
1291 | } |
|
|
1292 | |
|
|
1293 | #endif |
|
|
1294 | |
|
|
1295 | /*****************************************************************************/ |
|
|
1296 | |
|
|
1297 | #if EV_USE_PORT |
|
|
1298 | # include "ev_port.c" |
|
|
1299 | #endif |
|
|
1300 | #if EV_USE_KQUEUE |
|
|
1301 | # include "ev_kqueue.c" |
|
|
1302 | #endif |
|
|
1303 | #if EV_USE_EPOLL |
|
|
1304 | # include "ev_epoll.c" |
|
|
1305 | #endif |
|
|
1306 | #if EV_USE_POLL |
|
|
1307 | # include "ev_poll.c" |
|
|
1308 | #endif |
|
|
1309 | #if EV_USE_SELECT |
|
|
1310 | # include "ev_select.c" |
|
|
1311 | #endif |
|
|
1312 | |
|
|
1313 | int |
|
|
1314 | ev_version_major (void) |
|
|
1315 | { |
|
|
1316 | return EV_VERSION_MAJOR; |
|
|
1317 | } |
|
|
1318 | |
|
|
1319 | int |
|
|
1320 | ev_version_minor (void) |
|
|
1321 | { |
|
|
1322 | return EV_VERSION_MINOR; |
|
|
1323 | } |
|
|
1324 | |
|
|
1325 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1326 | int inline_size |
|
|
1327 | enable_secure (void) |
|
|
1328 | { |
|
|
1329 | #ifdef _WIN32 |
|
|
1330 | return 0; |
|
|
1331 | #else |
|
|
1332 | return getuid () != geteuid () |
|
|
1333 | || getgid () != getegid (); |
|
|
1334 | #endif |
|
|
1335 | } |
|
|
1336 | |
|
|
1337 | unsigned int |
|
|
1338 | ev_supported_backends (void) |
|
|
1339 | { |
|
|
1340 | unsigned int flags = 0; |
|
|
1341 | |
|
|
1342 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1343 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1344 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1345 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1346 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1347 | |
|
|
1348 | return flags; |
|
|
1349 | } |
|
|
1350 | |
|
|
1351 | unsigned int |
|
|
1352 | ev_recommended_backends (void) |
|
|
1353 | { |
|
|
1354 | unsigned int flags = ev_supported_backends (); |
|
|
1355 | |
|
|
1356 | #ifndef __NetBSD__ |
|
|
1357 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1358 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1359 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1360 | #endif |
|
|
1361 | #ifdef __APPLE__ |
|
|
1362 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1363 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1364 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1365 | #endif |
|
|
1366 | |
|
|
1367 | return flags; |
|
|
1368 | } |
|
|
1369 | |
|
|
1370 | unsigned int |
|
|
1371 | ev_embeddable_backends (void) |
|
|
1372 | { |
|
|
1373 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1374 | |
|
|
1375 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1376 | /* please fix it and tell me how to detect the fix */ |
|
|
1377 | flags &= ~EVBACKEND_EPOLL; |
|
|
1378 | |
|
|
1379 | return flags; |
|
|
1380 | } |
|
|
1381 | |
|
|
1382 | unsigned int |
|
|
1383 | ev_backend (EV_P) |
|
|
1384 | { |
|
|
1385 | return backend; |
|
|
1386 | } |
|
|
1387 | |
|
|
1388 | #if EV_MINIMAL < 2 |
|
|
1389 | unsigned int |
|
|
1390 | ev_loop_count (EV_P) |
|
|
1391 | { |
|
|
1392 | return loop_count; |
|
|
1393 | } |
|
|
1394 | |
|
|
1395 | unsigned int |
|
|
1396 | ev_loop_depth (EV_P) |
|
|
1397 | { |
|
|
1398 | return loop_depth; |
|
|
1399 | } |
|
|
1400 | |
|
|
1401 | void |
|
|
1402 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1403 | { |
|
|
1404 | io_blocktime = interval; |
|
|
1405 | } |
|
|
1406 | |
|
|
1407 | void |
|
|
1408 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1409 | { |
|
|
1410 | timeout_blocktime = interval; |
|
|
1411 | } |
|
|
1412 | |
|
|
1413 | void |
|
|
1414 | ev_set_userdata (EV_P_ void *data) |
|
|
1415 | { |
|
|
1416 | userdata = data; |
|
|
1417 | } |
|
|
1418 | |
|
|
1419 | void * |
|
|
1420 | ev_userdata (EV_P) |
|
|
1421 | { |
|
|
1422 | return userdata; |
|
|
1423 | } |
|
|
1424 | |
|
|
1425 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1426 | { |
|
|
1427 | invoke_cb = invoke_pending_cb; |
|
|
1428 | } |
|
|
1429 | |
|
|
1430 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1431 | { |
|
|
1432 | release_cb = release; |
|
|
1433 | acquire_cb = acquire; |
|
|
1434 | } |
|
|
1435 | #endif |
|
|
1436 | |
|
|
1437 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1438 | static void noinline |
|
|
1439 | loop_init (EV_P_ unsigned int flags) |
|
|
1440 | { |
|
|
1441 | if (!backend) |
|
|
1442 | { |
|
|
1443 | #if EV_USE_REALTIME |
|
|
1444 | if (!have_realtime) |
362 | { |
1445 | { |
363 | w->status = status; |
1446 | struct timespec ts; |
364 | event ((W)w, EV_CHILD); |
1447 | |
|
|
1448 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1449 | have_realtime = 1; |
365 | } |
1450 | } |
366 | } |
|
|
367 | |
|
|
368 | /*****************************************************************************/ |
|
|
369 | |
|
|
370 | #if HAVE_EPOLL |
|
|
371 | # include "ev_epoll.c" |
|
|
372 | #endif |
1451 | #endif |
373 | #if HAVE_SELECT |
|
|
374 | # include "ev_select.c" |
|
|
375 | #endif |
|
|
376 | |
1452 | |
377 | int ev_init (int flags) |
|
|
378 | { |
|
|
379 | if (!ev_method) |
|
|
380 | { |
|
|
381 | #if HAVE_MONOTONIC |
1453 | #if EV_USE_MONOTONIC |
|
|
1454 | if (!have_monotonic) |
|
|
1455 | { |
|
|
1456 | struct timespec ts; |
|
|
1457 | |
|
|
1458 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1459 | have_monotonic = 1; |
|
|
1460 | } |
|
|
1461 | #endif |
|
|
1462 | |
|
|
1463 | ev_rt_now = ev_time (); |
|
|
1464 | mn_now = get_clock (); |
|
|
1465 | now_floor = mn_now; |
|
|
1466 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1467 | #if EV_MINIMAL < 2 |
|
|
1468 | invoke_cb = ev_invoke_pending; |
|
|
1469 | #endif |
|
|
1470 | |
|
|
1471 | io_blocktime = 0.; |
|
|
1472 | timeout_blocktime = 0.; |
|
|
1473 | backend = 0; |
|
|
1474 | backend_fd = -1; |
|
|
1475 | gotasync = 0; |
|
|
1476 | #if EV_USE_INOTIFY |
|
|
1477 | fs_fd = -2; |
|
|
1478 | #endif |
|
|
1479 | |
|
|
1480 | /* pid check not overridable via env */ |
|
|
1481 | #ifndef _WIN32 |
|
|
1482 | if (flags & EVFLAG_FORKCHECK) |
|
|
1483 | curpid = getpid (); |
|
|
1484 | #endif |
|
|
1485 | |
|
|
1486 | if (!(flags & EVFLAG_NOENV) |
|
|
1487 | && !enable_secure () |
|
|
1488 | && getenv ("LIBEV_FLAGS")) |
|
|
1489 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1490 | |
|
|
1491 | if (!(flags & 0x0000ffffU)) |
|
|
1492 | flags |= ev_recommended_backends (); |
|
|
1493 | |
|
|
1494 | #if EV_USE_PORT |
|
|
1495 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1496 | #endif |
|
|
1497 | #if EV_USE_KQUEUE |
|
|
1498 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1499 | #endif |
|
|
1500 | #if EV_USE_EPOLL |
|
|
1501 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1502 | #endif |
|
|
1503 | #if EV_USE_POLL |
|
|
1504 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1505 | #endif |
|
|
1506 | #if EV_USE_SELECT |
|
|
1507 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1508 | #endif |
|
|
1509 | |
|
|
1510 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1511 | |
|
|
1512 | ev_init (&pipe_w, pipecb); |
|
|
1513 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1514 | } |
|
|
1515 | } |
|
|
1516 | |
|
|
1517 | /* free up a loop structure */ |
|
|
1518 | static void noinline |
|
|
1519 | loop_destroy (EV_P) |
|
|
1520 | { |
|
|
1521 | int i; |
|
|
1522 | |
|
|
1523 | if (ev_is_active (&pipe_w)) |
|
|
1524 | { |
|
|
1525 | ev_ref (EV_A); /* signal watcher */ |
|
|
1526 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1527 | |
|
|
1528 | #if EV_USE_EVENTFD |
|
|
1529 | if (evfd >= 0) |
|
|
1530 | close (evfd); |
|
|
1531 | #endif |
|
|
1532 | |
|
|
1533 | if (evpipe [0] >= 0) |
|
|
1534 | { |
|
|
1535 | close (evpipe [0]); |
|
|
1536 | close (evpipe [1]); |
|
|
1537 | } |
|
|
1538 | } |
|
|
1539 | |
|
|
1540 | #if EV_USE_INOTIFY |
|
|
1541 | if (fs_fd >= 0) |
|
|
1542 | close (fs_fd); |
|
|
1543 | #endif |
|
|
1544 | |
|
|
1545 | if (backend_fd >= 0) |
|
|
1546 | close (backend_fd); |
|
|
1547 | |
|
|
1548 | #if EV_USE_PORT |
|
|
1549 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1550 | #endif |
|
|
1551 | #if EV_USE_KQUEUE |
|
|
1552 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1553 | #endif |
|
|
1554 | #if EV_USE_EPOLL |
|
|
1555 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1556 | #endif |
|
|
1557 | #if EV_USE_POLL |
|
|
1558 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1559 | #endif |
|
|
1560 | #if EV_USE_SELECT |
|
|
1561 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1562 | #endif |
|
|
1563 | |
|
|
1564 | for (i = NUMPRI; i--; ) |
|
|
1565 | { |
|
|
1566 | array_free (pending, [i]); |
|
|
1567 | #if EV_IDLE_ENABLE |
|
|
1568 | array_free (idle, [i]); |
|
|
1569 | #endif |
|
|
1570 | } |
|
|
1571 | |
|
|
1572 | ev_free (anfds); anfdmax = 0; |
|
|
1573 | |
|
|
1574 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1575 | array_free (rfeed, EMPTY); |
|
|
1576 | array_free (fdchange, EMPTY); |
|
|
1577 | array_free (timer, EMPTY); |
|
|
1578 | #if EV_PERIODIC_ENABLE |
|
|
1579 | array_free (periodic, EMPTY); |
|
|
1580 | #endif |
|
|
1581 | #if EV_FORK_ENABLE |
|
|
1582 | array_free (fork, EMPTY); |
|
|
1583 | #endif |
|
|
1584 | array_free (prepare, EMPTY); |
|
|
1585 | array_free (check, EMPTY); |
|
|
1586 | #if EV_ASYNC_ENABLE |
|
|
1587 | array_free (async, EMPTY); |
|
|
1588 | #endif |
|
|
1589 | |
|
|
1590 | backend = 0; |
|
|
1591 | } |
|
|
1592 | |
|
|
1593 | #if EV_USE_INOTIFY |
|
|
1594 | inline_size void infy_fork (EV_P); |
|
|
1595 | #endif |
|
|
1596 | |
|
|
1597 | inline_size void |
|
|
1598 | loop_fork (EV_P) |
|
|
1599 | { |
|
|
1600 | #if EV_USE_PORT |
|
|
1601 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1602 | #endif |
|
|
1603 | #if EV_USE_KQUEUE |
|
|
1604 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1605 | #endif |
|
|
1606 | #if EV_USE_EPOLL |
|
|
1607 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1608 | #endif |
|
|
1609 | #if EV_USE_INOTIFY |
|
|
1610 | infy_fork (EV_A); |
|
|
1611 | #endif |
|
|
1612 | |
|
|
1613 | if (ev_is_active (&pipe_w)) |
|
|
1614 | { |
|
|
1615 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1616 | /* while we modify the fd vars */ |
|
|
1617 | gotsig = 1; |
|
|
1618 | #if EV_ASYNC_ENABLE |
|
|
1619 | gotasync = 1; |
|
|
1620 | #endif |
|
|
1621 | |
|
|
1622 | ev_ref (EV_A); |
|
|
1623 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1624 | |
|
|
1625 | #if EV_USE_EVENTFD |
|
|
1626 | if (evfd >= 0) |
|
|
1627 | close (evfd); |
|
|
1628 | #endif |
|
|
1629 | |
|
|
1630 | if (evpipe [0] >= 0) |
|
|
1631 | { |
|
|
1632 | close (evpipe [0]); |
|
|
1633 | close (evpipe [1]); |
|
|
1634 | } |
|
|
1635 | |
|
|
1636 | evpipe_init (EV_A); |
|
|
1637 | /* now iterate over everything, in case we missed something */ |
|
|
1638 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
1639 | } |
|
|
1640 | |
|
|
1641 | postfork = 0; |
|
|
1642 | } |
|
|
1643 | |
|
|
1644 | #if EV_MULTIPLICITY |
|
|
1645 | |
|
|
1646 | struct ev_loop * |
|
|
1647 | ev_loop_new (unsigned int flags) |
|
|
1648 | { |
|
|
1649 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1650 | |
|
|
1651 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1652 | |
|
|
1653 | loop_init (EV_A_ flags); |
|
|
1654 | |
|
|
1655 | if (ev_backend (EV_A)) |
|
|
1656 | return loop; |
|
|
1657 | |
|
|
1658 | return 0; |
|
|
1659 | } |
|
|
1660 | |
|
|
1661 | void |
|
|
1662 | ev_loop_destroy (EV_P) |
|
|
1663 | { |
|
|
1664 | loop_destroy (EV_A); |
|
|
1665 | ev_free (loop); |
|
|
1666 | } |
|
|
1667 | |
|
|
1668 | void |
|
|
1669 | ev_loop_fork (EV_P) |
|
|
1670 | { |
|
|
1671 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1672 | } |
|
|
1673 | #endif /* multiplicity */ |
|
|
1674 | |
|
|
1675 | #if EV_VERIFY |
|
|
1676 | static void noinline |
|
|
1677 | verify_watcher (EV_P_ W w) |
|
|
1678 | { |
|
|
1679 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1680 | |
|
|
1681 | if (w->pending) |
|
|
1682 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1683 | } |
|
|
1684 | |
|
|
1685 | static void noinline |
|
|
1686 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1687 | { |
|
|
1688 | int i; |
|
|
1689 | |
|
|
1690 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1691 | { |
|
|
1692 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1693 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1694 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1695 | |
|
|
1696 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1697 | } |
|
|
1698 | } |
|
|
1699 | |
|
|
1700 | static void noinline |
|
|
1701 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1702 | { |
|
|
1703 | while (cnt--) |
|
|
1704 | { |
|
|
1705 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1706 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1707 | } |
|
|
1708 | } |
|
|
1709 | #endif |
|
|
1710 | |
|
|
1711 | #if EV_MINIMAL < 2 |
|
|
1712 | void |
|
|
1713 | ev_loop_verify (EV_P) |
|
|
1714 | { |
|
|
1715 | #if EV_VERIFY |
|
|
1716 | int i; |
|
|
1717 | WL w; |
|
|
1718 | |
|
|
1719 | assert (activecnt >= -1); |
|
|
1720 | |
|
|
1721 | assert (fdchangemax >= fdchangecnt); |
|
|
1722 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1723 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1724 | |
|
|
1725 | assert (anfdmax >= 0); |
|
|
1726 | for (i = 0; i < anfdmax; ++i) |
|
|
1727 | for (w = anfds [i].head; w; w = w->next) |
382 | { |
1728 | { |
383 | struct timespec ts; |
1729 | verify_watcher (EV_A_ (W)w); |
384 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1730 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
385 | have_monotonic = 1; |
1731 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
386 | } |
1732 | } |
|
|
1733 | |
|
|
1734 | assert (timermax >= timercnt); |
|
|
1735 | verify_heap (EV_A_ timers, timercnt); |
|
|
1736 | |
|
|
1737 | #if EV_PERIODIC_ENABLE |
|
|
1738 | assert (periodicmax >= periodiccnt); |
|
|
1739 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1740 | #endif |
|
|
1741 | |
|
|
1742 | for (i = NUMPRI; i--; ) |
|
|
1743 | { |
|
|
1744 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1745 | #if EV_IDLE_ENABLE |
|
|
1746 | assert (idleall >= 0); |
|
|
1747 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1748 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1749 | #endif |
|
|
1750 | } |
|
|
1751 | |
|
|
1752 | #if EV_FORK_ENABLE |
|
|
1753 | assert (forkmax >= forkcnt); |
|
|
1754 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1755 | #endif |
|
|
1756 | |
|
|
1757 | #if EV_ASYNC_ENABLE |
|
|
1758 | assert (asyncmax >= asynccnt); |
|
|
1759 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1760 | #endif |
|
|
1761 | |
|
|
1762 | assert (preparemax >= preparecnt); |
|
|
1763 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1764 | |
|
|
1765 | assert (checkmax >= checkcnt); |
|
|
1766 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1767 | |
|
|
1768 | # if 0 |
|
|
1769 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1770 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
387 | #endif |
1771 | # endif |
388 | |
|
|
389 | ev_now = ev_time (); |
|
|
390 | now = get_clock (); |
|
|
391 | diff = ev_now - now; |
|
|
392 | |
|
|
393 | if (pipe (sigpipe)) |
|
|
394 | return 0; |
|
|
395 | |
|
|
396 | ev_method = EVMETHOD_NONE; |
|
|
397 | #if HAVE_EPOLL |
|
|
398 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
399 | #endif |
1772 | #endif |
400 | #if HAVE_SELECT |
1773 | } |
401 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
402 | #endif |
1774 | #endif |
403 | |
1775 | |
404 | if (ev_method) |
1776 | #if EV_MULTIPLICITY |
|
|
1777 | struct ev_loop * |
|
|
1778 | ev_default_loop_init (unsigned int flags) |
|
|
1779 | #else |
|
|
1780 | int |
|
|
1781 | ev_default_loop (unsigned int flags) |
|
|
1782 | #endif |
|
|
1783 | { |
|
|
1784 | if (!ev_default_loop_ptr) |
|
|
1785 | { |
|
|
1786 | #if EV_MULTIPLICITY |
|
|
1787 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1788 | #else |
|
|
1789 | ev_default_loop_ptr = 1; |
|
|
1790 | #endif |
|
|
1791 | |
|
|
1792 | loop_init (EV_A_ flags); |
|
|
1793 | |
|
|
1794 | if (ev_backend (EV_A)) |
405 | { |
1795 | { |
406 | evw_init (&sigev, sigcb); |
1796 | #ifndef _WIN32 |
407 | siginit (); |
|
|
408 | |
|
|
409 | evsignal_init (&childev, childcb, SIGCHLD); |
1797 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1798 | ev_set_priority (&childev, EV_MAXPRI); |
410 | evsignal_start (&childev); |
1799 | ev_signal_start (EV_A_ &childev); |
411 | } |
1800 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
412 | } |
|
|
413 | |
|
|
414 | return ev_method; |
|
|
415 | } |
|
|
416 | |
|
|
417 | /*****************************************************************************/ |
|
|
418 | |
|
|
419 | void ev_prefork (void) |
|
|
420 | { |
|
|
421 | /* nop */ |
|
|
422 | } |
|
|
423 | |
|
|
424 | void ev_postfork_parent (void) |
|
|
425 | { |
|
|
426 | /* nop */ |
|
|
427 | } |
|
|
428 | |
|
|
429 | void ev_postfork_child (void) |
|
|
430 | { |
|
|
431 | #if HAVE_EPOLL |
|
|
432 | if (ev_method == EVMETHOD_EPOLL) |
|
|
433 | epoll_postfork_child (); |
|
|
434 | #endif |
1801 | #endif |
435 | |
|
|
436 | evio_stop (&sigev); |
|
|
437 | close (sigpipe [0]); |
|
|
438 | close (sigpipe [1]); |
|
|
439 | pipe (sigpipe); |
|
|
440 | siginit (); |
|
|
441 | } |
|
|
442 | |
|
|
443 | /*****************************************************************************/ |
|
|
444 | |
|
|
445 | static void |
|
|
446 | fd_reify (void) |
|
|
447 | { |
|
|
448 | int i; |
|
|
449 | |
|
|
450 | for (i = 0; i < fdchangecnt; ++i) |
|
|
451 | { |
|
|
452 | int fd = fdchanges [i]; |
|
|
453 | ANFD *anfd = anfds + fd; |
|
|
454 | struct ev_io *w; |
|
|
455 | |
|
|
456 | int wev = 0; |
|
|
457 | |
|
|
458 | for (w = anfd->head; w; w = w->next) |
|
|
459 | wev |= w->events; |
|
|
460 | |
|
|
461 | if (anfd->wev != wev) |
|
|
462 | { |
|
|
463 | method_modify (fd, anfd->wev, wev); |
|
|
464 | anfd->wev = wev; |
|
|
465 | } |
|
|
466 | } |
|
|
467 | |
|
|
468 | fdchangecnt = 0; |
|
|
469 | } |
|
|
470 | |
|
|
471 | static void |
|
|
472 | call_pending () |
|
|
473 | { |
|
|
474 | while (pendingcnt) |
|
|
475 | { |
|
|
476 | ANPENDING *p = pendings + --pendingcnt; |
|
|
477 | |
|
|
478 | if (p->w) |
|
|
479 | { |
|
|
480 | p->w->pending = 0; |
|
|
481 | p->w->cb (p->w, p->events); |
|
|
482 | } |
|
|
483 | } |
|
|
484 | } |
|
|
485 | |
|
|
486 | static void |
|
|
487 | timers_reify () |
|
|
488 | { |
|
|
489 | while (timercnt && timers [0]->at <= now) |
|
|
490 | { |
|
|
491 | struct ev_timer *w = timers [0]; |
|
|
492 | |
|
|
493 | event ((W)w, EV_TIMEOUT); |
|
|
494 | |
|
|
495 | /* first reschedule or stop timer */ |
|
|
496 | if (w->repeat) |
|
|
497 | { |
|
|
498 | w->at = now + w->repeat; |
|
|
499 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
500 | downheap ((WT *)timers, timercnt, 0); |
|
|
501 | } |
1802 | } |
502 | else |
1803 | else |
503 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1804 | ev_default_loop_ptr = 0; |
504 | } |
1805 | } |
505 | } |
|
|
506 | |
1806 | |
507 | static void |
1807 | return ev_default_loop_ptr; |
508 | periodics_reify () |
1808 | } |
|
|
1809 | |
|
|
1810 | void |
|
|
1811 | ev_default_destroy (void) |
509 | { |
1812 | { |
510 | while (periodiccnt && periodics [0]->at <= ev_now) |
1813 | #if EV_MULTIPLICITY |
|
|
1814 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1815 | #endif |
|
|
1816 | |
|
|
1817 | ev_default_loop_ptr = 0; |
|
|
1818 | |
|
|
1819 | #ifndef _WIN32 |
|
|
1820 | ev_ref (EV_A); /* child watcher */ |
|
|
1821 | ev_signal_stop (EV_A_ &childev); |
|
|
1822 | #endif |
|
|
1823 | |
|
|
1824 | loop_destroy (EV_A); |
|
|
1825 | } |
|
|
1826 | |
|
|
1827 | void |
|
|
1828 | ev_default_fork (void) |
|
|
1829 | { |
|
|
1830 | #if EV_MULTIPLICITY |
|
|
1831 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1832 | #endif |
|
|
1833 | |
|
|
1834 | postfork = 1; /* must be in line with ev_loop_fork */ |
|
|
1835 | } |
|
|
1836 | |
|
|
1837 | /*****************************************************************************/ |
|
|
1838 | |
|
|
1839 | void |
|
|
1840 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1841 | { |
|
|
1842 | EV_CB_INVOKE ((W)w, revents); |
|
|
1843 | } |
|
|
1844 | |
|
|
1845 | unsigned int |
|
|
1846 | ev_pending_count (EV_P) |
|
|
1847 | { |
|
|
1848 | int pri; |
|
|
1849 | unsigned int count = 0; |
|
|
1850 | |
|
|
1851 | for (pri = NUMPRI; pri--; ) |
|
|
1852 | count += pendingcnt [pri]; |
|
|
1853 | |
|
|
1854 | return count; |
|
|
1855 | } |
|
|
1856 | |
|
|
1857 | void noinline |
|
|
1858 | ev_invoke_pending (EV_P) |
|
|
1859 | { |
|
|
1860 | int pri; |
|
|
1861 | |
|
|
1862 | for (pri = NUMPRI; pri--; ) |
|
|
1863 | while (pendingcnt [pri]) |
511 | { |
1864 | { |
512 | struct ev_periodic *w = periodics [0]; |
1865 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
513 | |
1866 | |
514 | /* first reschedule or stop timer */ |
1867 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
515 | if (w->interval) |
1868 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
1869 | |
|
|
1870 | p->w->pending = 0; |
|
|
1871 | EV_CB_INVOKE (p->w, p->events); |
|
|
1872 | EV_FREQUENT_CHECK; |
|
|
1873 | } |
|
|
1874 | } |
|
|
1875 | |
|
|
1876 | #if EV_IDLE_ENABLE |
|
|
1877 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
1878 | /* only when higher priorities are idle" logic */ |
|
|
1879 | inline_size void |
|
|
1880 | idle_reify (EV_P) |
|
|
1881 | { |
|
|
1882 | if (expect_false (idleall)) |
|
|
1883 | { |
|
|
1884 | int pri; |
|
|
1885 | |
|
|
1886 | for (pri = NUMPRI; pri--; ) |
516 | { |
1887 | { |
517 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1888 | if (pendingcnt [pri]) |
518 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1889 | break; |
519 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
520 | } |
|
|
521 | else |
|
|
522 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
|
|
523 | |
1890 | |
524 | event ((W)w, EV_TIMEOUT); |
1891 | if (idlecnt [pri]) |
525 | } |
|
|
526 | } |
|
|
527 | |
|
|
528 | static void |
|
|
529 | periodics_reschedule (ev_tstamp diff) |
|
|
530 | { |
|
|
531 | int i; |
|
|
532 | |
|
|
533 | /* adjust periodics after time jump */ |
|
|
534 | for (i = 0; i < periodiccnt; ++i) |
|
|
535 | { |
|
|
536 | struct ev_periodic *w = periodics [i]; |
|
|
537 | |
|
|
538 | if (w->interval) |
|
|
539 | { |
|
|
540 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
541 | |
|
|
542 | if (fabs (diff) >= 1e-4) |
|
|
543 | { |
1892 | { |
544 | evperiodic_stop (w); |
1893 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
545 | evperiodic_start (w); |
1894 | break; |
546 | |
|
|
547 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
548 | } |
1895 | } |
549 | } |
1896 | } |
550 | } |
1897 | } |
551 | } |
1898 | } |
|
|
1899 | #endif |
552 | |
1900 | |
553 | static void |
1901 | /* make timers pending */ |
554 | time_update () |
1902 | inline_size void |
|
|
1903 | timers_reify (EV_P) |
|
|
1904 | { |
|
|
1905 | EV_FREQUENT_CHECK; |
|
|
1906 | |
|
|
1907 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
1908 | { |
|
|
1909 | do |
|
|
1910 | { |
|
|
1911 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1912 | |
|
|
1913 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1914 | |
|
|
1915 | /* first reschedule or stop timer */ |
|
|
1916 | if (w->repeat) |
|
|
1917 | { |
|
|
1918 | ev_at (w) += w->repeat; |
|
|
1919 | if (ev_at (w) < mn_now) |
|
|
1920 | ev_at (w) = mn_now; |
|
|
1921 | |
|
|
1922 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1923 | |
|
|
1924 | ANHE_at_cache (timers [HEAP0]); |
|
|
1925 | downheap (timers, timercnt, HEAP0); |
|
|
1926 | } |
|
|
1927 | else |
|
|
1928 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1929 | |
|
|
1930 | EV_FREQUENT_CHECK; |
|
|
1931 | feed_reverse (EV_A_ (W)w); |
|
|
1932 | } |
|
|
1933 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
1934 | |
|
|
1935 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
|
|
1936 | } |
|
|
1937 | } |
|
|
1938 | |
|
|
1939 | #if EV_PERIODIC_ENABLE |
|
|
1940 | /* make periodics pending */ |
|
|
1941 | inline_size void |
|
|
1942 | periodics_reify (EV_P) |
|
|
1943 | { |
|
|
1944 | EV_FREQUENT_CHECK; |
|
|
1945 | |
|
|
1946 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
1947 | { |
|
|
1948 | int feed_count = 0; |
|
|
1949 | |
|
|
1950 | do |
|
|
1951 | { |
|
|
1952 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1953 | |
|
|
1954 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1955 | |
|
|
1956 | /* first reschedule or stop timer */ |
|
|
1957 | if (w->reschedule_cb) |
|
|
1958 | { |
|
|
1959 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1960 | |
|
|
1961 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1962 | |
|
|
1963 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1964 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1965 | } |
|
|
1966 | else if (w->interval) |
|
|
1967 | { |
|
|
1968 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1969 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1970 | /* this might happen because of floating point inexactness */ |
|
|
1971 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1972 | { |
|
|
1973 | ev_at (w) += w->interval; |
|
|
1974 | |
|
|
1975 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
1976 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
1977 | /* has effectively asked to get triggered more often than possible */ |
|
|
1978 | if (ev_at (w) < ev_rt_now) |
|
|
1979 | ev_at (w) = ev_rt_now; |
|
|
1980 | } |
|
|
1981 | |
|
|
1982 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1983 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1984 | } |
|
|
1985 | else |
|
|
1986 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1987 | |
|
|
1988 | EV_FREQUENT_CHECK; |
|
|
1989 | feed_reverse (EV_A_ (W)w); |
|
|
1990 | } |
|
|
1991 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
1992 | |
|
|
1993 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
1994 | } |
|
|
1995 | } |
|
|
1996 | |
|
|
1997 | /* simply recalculate all periodics */ |
|
|
1998 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
|
|
1999 | static void noinline |
|
|
2000 | periodics_reschedule (EV_P) |
555 | { |
2001 | { |
556 | int i; |
2002 | int i; |
557 | |
2003 | |
558 | ev_now = ev_time (); |
2004 | /* adjust periodics after time jump */ |
|
|
2005 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2006 | { |
|
|
2007 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
559 | |
2008 | |
560 | if (have_monotonic) |
2009 | if (w->reschedule_cb) |
|
|
2010 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2011 | else if (w->interval) |
|
|
2012 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2013 | |
|
|
2014 | ANHE_at_cache (periodics [i]); |
561 | { |
2015 | } |
|
|
2016 | |
|
|
2017 | reheap (periodics, periodiccnt); |
|
|
2018 | } |
|
|
2019 | #endif |
|
|
2020 | |
|
|
2021 | /* adjust all timers by a given offset */ |
|
|
2022 | static void noinline |
|
|
2023 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2024 | { |
|
|
2025 | int i; |
|
|
2026 | |
|
|
2027 | for (i = 0; i < timercnt; ++i) |
|
|
2028 | { |
|
|
2029 | ANHE *he = timers + i + HEAP0; |
|
|
2030 | ANHE_w (*he)->at += adjust; |
|
|
2031 | ANHE_at_cache (*he); |
|
|
2032 | } |
|
|
2033 | } |
|
|
2034 | |
|
|
2035 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2036 | /* also detetc if there was a timejump, and act accordingly */ |
|
|
2037 | inline_speed void |
|
|
2038 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2039 | { |
|
|
2040 | #if EV_USE_MONOTONIC |
|
|
2041 | if (expect_true (have_monotonic)) |
|
|
2042 | { |
|
|
2043 | int i; |
562 | ev_tstamp odiff = diff; |
2044 | ev_tstamp odiff = rtmn_diff; |
563 | |
2045 | |
564 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
2046 | mn_now = get_clock (); |
|
|
2047 | |
|
|
2048 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2049 | /* interpolate in the meantime */ |
|
|
2050 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
565 | { |
2051 | { |
566 | now = get_clock (); |
2052 | ev_rt_now = rtmn_diff + mn_now; |
|
|
2053 | return; |
|
|
2054 | } |
|
|
2055 | |
|
|
2056 | now_floor = mn_now; |
|
|
2057 | ev_rt_now = ev_time (); |
|
|
2058 | |
|
|
2059 | /* loop a few times, before making important decisions. |
|
|
2060 | * on the choice of "4": one iteration isn't enough, |
|
|
2061 | * in case we get preempted during the calls to |
|
|
2062 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
2063 | * to succeed in that case, though. and looping a few more times |
|
|
2064 | * doesn't hurt either as we only do this on time-jumps or |
|
|
2065 | * in the unlikely event of having been preempted here. |
|
|
2066 | */ |
|
|
2067 | for (i = 4; --i; ) |
|
|
2068 | { |
567 | diff = ev_now - now; |
2069 | rtmn_diff = ev_rt_now - mn_now; |
568 | |
2070 | |
569 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
2071 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
570 | return; /* all is well */ |
2072 | return; /* all is well */ |
571 | |
2073 | |
572 | ev_now = ev_time (); |
2074 | ev_rt_now = ev_time (); |
|
|
2075 | mn_now = get_clock (); |
|
|
2076 | now_floor = mn_now; |
573 | } |
2077 | } |
574 | |
2078 | |
575 | periodics_reschedule (diff - odiff); |
|
|
576 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
2079 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2080 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2081 | # if EV_PERIODIC_ENABLE |
|
|
2082 | periodics_reschedule (EV_A); |
|
|
2083 | # endif |
577 | } |
2084 | } |
578 | else |
2085 | else |
|
|
2086 | #endif |
579 | { |
2087 | { |
580 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
2088 | ev_rt_now = ev_time (); |
|
|
2089 | |
|
|
2090 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
581 | { |
2091 | { |
582 | periodics_reschedule (ev_now - now); |
|
|
583 | |
|
|
584 | /* adjust timers. this is easy, as the offset is the same for all */ |
2092 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
585 | for (i = 0; i < timercnt; ++i) |
2093 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
586 | timers [i]->at += diff; |
2094 | #if EV_PERIODIC_ENABLE |
|
|
2095 | periodics_reschedule (EV_A); |
|
|
2096 | #endif |
587 | } |
2097 | } |
588 | |
2098 | |
589 | now = ev_now; |
2099 | mn_now = ev_rt_now; |
590 | } |
2100 | } |
591 | } |
2101 | } |
592 | |
2102 | |
593 | int ev_loop_done; |
2103 | void |
594 | |
|
|
595 | void ev_loop (int flags) |
2104 | ev_loop (EV_P_ int flags) |
596 | { |
2105 | { |
597 | double block; |
2106 | #if EV_MINIMAL < 2 |
598 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
2107 | ++loop_depth; |
|
|
2108 | #endif |
|
|
2109 | |
|
|
2110 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
|
|
2111 | |
|
|
2112 | loop_done = EVUNLOOP_CANCEL; |
|
|
2113 | |
|
|
2114 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
599 | |
2115 | |
600 | do |
2116 | do |
601 | { |
2117 | { |
|
|
2118 | #if EV_VERIFY >= 2 |
|
|
2119 | ev_loop_verify (EV_A); |
|
|
2120 | #endif |
|
|
2121 | |
|
|
2122 | #ifndef _WIN32 |
|
|
2123 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2124 | if (expect_false (getpid () != curpid)) |
|
|
2125 | { |
|
|
2126 | curpid = getpid (); |
|
|
2127 | postfork = 1; |
|
|
2128 | } |
|
|
2129 | #endif |
|
|
2130 | |
|
|
2131 | #if EV_FORK_ENABLE |
|
|
2132 | /* we might have forked, so queue fork handlers */ |
|
|
2133 | if (expect_false (postfork)) |
|
|
2134 | if (forkcnt) |
|
|
2135 | { |
|
|
2136 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2137 | EV_INVOKE_PENDING; |
|
|
2138 | } |
|
|
2139 | #endif |
|
|
2140 | |
602 | /* queue check watchers (and execute them) */ |
2141 | /* queue prepare watchers (and execute them) */ |
603 | if (preparecnt) |
2142 | if (expect_false (preparecnt)) |
604 | { |
2143 | { |
605 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
2144 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
606 | call_pending (); |
2145 | EV_INVOKE_PENDING; |
607 | } |
2146 | } |
608 | |
2147 | |
|
|
2148 | if (expect_false (loop_done)) |
|
|
2149 | break; |
|
|
2150 | |
|
|
2151 | /* we might have forked, so reify kernel state if necessary */ |
|
|
2152 | if (expect_false (postfork)) |
|
|
2153 | loop_fork (EV_A); |
|
|
2154 | |
609 | /* update fd-related kernel structures */ |
2155 | /* update fd-related kernel structures */ |
610 | fd_reify (); |
2156 | fd_reify (EV_A); |
611 | |
2157 | |
612 | /* calculate blocking time */ |
2158 | /* calculate blocking time */ |
|
|
2159 | { |
|
|
2160 | ev_tstamp waittime = 0.; |
|
|
2161 | ev_tstamp sleeptime = 0.; |
613 | |
2162 | |
614 | /* we only need this for !monotonic clockor timers, but as we basically |
2163 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
615 | always have timers, we just calculate it always */ |
|
|
616 | ev_now = ev_time (); |
|
|
617 | |
|
|
618 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
619 | block = 0.; |
|
|
620 | else |
|
|
621 | { |
2164 | { |
|
|
2165 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2166 | ev_tstamp prev_mn_now = mn_now; |
|
|
2167 | |
|
|
2168 | /* update time to cancel out callback processing overhead */ |
|
|
2169 | time_update (EV_A_ 1e100); |
|
|
2170 | |
622 | block = MAX_BLOCKTIME; |
2171 | waittime = MAX_BLOCKTIME; |
623 | |
2172 | |
624 | if (timercnt) |
2173 | if (timercnt) |
625 | { |
2174 | { |
626 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
2175 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
627 | if (block > to) block = to; |
2176 | if (waittime > to) waittime = to; |
628 | } |
2177 | } |
629 | |
2178 | |
|
|
2179 | #if EV_PERIODIC_ENABLE |
630 | if (periodiccnt) |
2180 | if (periodiccnt) |
631 | { |
2181 | { |
632 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
2182 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
633 | if (block > to) block = to; |
2183 | if (waittime > to) waittime = to; |
634 | } |
2184 | } |
|
|
2185 | #endif |
635 | |
2186 | |
636 | if (block < 0.) block = 0.; |
2187 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2188 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2189 | waittime = timeout_blocktime; |
|
|
2190 | |
|
|
2191 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2192 | if (expect_false (io_blocktime)) |
|
|
2193 | { |
|
|
2194 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2195 | |
|
|
2196 | if (sleeptime > waittime - backend_fudge) |
|
|
2197 | sleeptime = waittime - backend_fudge; |
|
|
2198 | |
|
|
2199 | if (expect_true (sleeptime > 0.)) |
|
|
2200 | { |
|
|
2201 | ev_sleep (sleeptime); |
|
|
2202 | waittime -= sleeptime; |
|
|
2203 | } |
|
|
2204 | } |
637 | } |
2205 | } |
638 | |
2206 | |
639 | method_poll (block); |
2207 | #if EV_MINIMAL < 2 |
|
|
2208 | ++loop_count; |
|
|
2209 | #endif |
|
|
2210 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
|
|
2211 | backend_poll (EV_A_ waittime); |
|
|
2212 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
640 | |
2213 | |
641 | /* update ev_now, do magic */ |
2214 | /* update ev_rt_now, do magic */ |
642 | time_update (); |
2215 | time_update (EV_A_ waittime + sleeptime); |
|
|
2216 | } |
643 | |
2217 | |
644 | /* queue pending timers and reschedule them */ |
2218 | /* queue pending timers and reschedule them */ |
645 | timers_reify (); /* relative timers called last */ |
2219 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2220 | #if EV_PERIODIC_ENABLE |
646 | periodics_reify (); /* absolute timers called first */ |
2221 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2222 | #endif |
647 | |
2223 | |
|
|
2224 | #if EV_IDLE_ENABLE |
648 | /* queue idle watchers unless io or timers are pending */ |
2225 | /* queue idle watchers unless other events are pending */ |
649 | if (!pendingcnt) |
2226 | idle_reify (EV_A); |
650 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
2227 | #endif |
651 | |
2228 | |
652 | /* queue check watchers, to be executed first */ |
2229 | /* queue check watchers, to be executed first */ |
653 | if (checkcnt) |
2230 | if (expect_false (checkcnt)) |
654 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
2231 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
655 | |
2232 | |
656 | call_pending (); |
2233 | EV_INVOKE_PENDING; |
657 | } |
2234 | } |
658 | while (!ev_loop_done); |
2235 | while (expect_true ( |
|
|
2236 | activecnt |
|
|
2237 | && !loop_done |
|
|
2238 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2239 | )); |
659 | |
2240 | |
660 | if (ev_loop_done != 2) |
2241 | if (loop_done == EVUNLOOP_ONE) |
|
|
2242 | loop_done = EVUNLOOP_CANCEL; |
|
|
2243 | |
|
|
2244 | #if EV_MINIMAL < 2 |
|
|
2245 | --loop_depth; |
|
|
2246 | #endif |
|
|
2247 | } |
|
|
2248 | |
|
|
2249 | void |
|
|
2250 | ev_unloop (EV_P_ int how) |
|
|
2251 | { |
661 | ev_loop_done = 0; |
2252 | loop_done = how; |
|
|
2253 | } |
|
|
2254 | |
|
|
2255 | void |
|
|
2256 | ev_ref (EV_P) |
|
|
2257 | { |
|
|
2258 | ++activecnt; |
|
|
2259 | } |
|
|
2260 | |
|
|
2261 | void |
|
|
2262 | ev_unref (EV_P) |
|
|
2263 | { |
|
|
2264 | --activecnt; |
|
|
2265 | } |
|
|
2266 | |
|
|
2267 | void |
|
|
2268 | ev_now_update (EV_P) |
|
|
2269 | { |
|
|
2270 | time_update (EV_A_ 1e100); |
|
|
2271 | } |
|
|
2272 | |
|
|
2273 | void |
|
|
2274 | ev_suspend (EV_P) |
|
|
2275 | { |
|
|
2276 | ev_now_update (EV_A); |
|
|
2277 | } |
|
|
2278 | |
|
|
2279 | void |
|
|
2280 | ev_resume (EV_P) |
|
|
2281 | { |
|
|
2282 | ev_tstamp mn_prev = mn_now; |
|
|
2283 | |
|
|
2284 | ev_now_update (EV_A); |
|
|
2285 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2286 | #if EV_PERIODIC_ENABLE |
|
|
2287 | /* TODO: really do this? */ |
|
|
2288 | periodics_reschedule (EV_A); |
|
|
2289 | #endif |
662 | } |
2290 | } |
663 | |
2291 | |
664 | /*****************************************************************************/ |
2292 | /*****************************************************************************/ |
|
|
2293 | /* singly-linked list management, used when the expected list length is short */ |
665 | |
2294 | |
666 | static void |
2295 | inline_size void |
667 | wlist_add (WL *head, WL elem) |
2296 | wlist_add (WL *head, WL elem) |
668 | { |
2297 | { |
669 | elem->next = *head; |
2298 | elem->next = *head; |
670 | *head = elem; |
2299 | *head = elem; |
671 | } |
2300 | } |
672 | |
2301 | |
673 | static void |
2302 | inline_size void |
674 | wlist_del (WL *head, WL elem) |
2303 | wlist_del (WL *head, WL elem) |
675 | { |
2304 | { |
676 | while (*head) |
2305 | while (*head) |
677 | { |
2306 | { |
678 | if (*head == elem) |
2307 | if (*head == elem) |
… | |
… | |
683 | |
2312 | |
684 | head = &(*head)->next; |
2313 | head = &(*head)->next; |
685 | } |
2314 | } |
686 | } |
2315 | } |
687 | |
2316 | |
688 | static void |
2317 | /* internal, faster, version of ev_clear_pending */ |
689 | ev_clear (W w) |
2318 | inline_speed void |
|
|
2319 | clear_pending (EV_P_ W w) |
690 | { |
2320 | { |
691 | if (w->pending) |
2321 | if (w->pending) |
692 | { |
2322 | { |
693 | pendings [w->pending - 1].w = 0; |
2323 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
694 | w->pending = 0; |
2324 | w->pending = 0; |
695 | } |
2325 | } |
696 | } |
2326 | } |
697 | |
2327 | |
698 | static void |
2328 | int |
|
|
2329 | ev_clear_pending (EV_P_ void *w) |
|
|
2330 | { |
|
|
2331 | W w_ = (W)w; |
|
|
2332 | int pending = w_->pending; |
|
|
2333 | |
|
|
2334 | if (expect_true (pending)) |
|
|
2335 | { |
|
|
2336 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2337 | p->w = (W)&pending_w; |
|
|
2338 | w_->pending = 0; |
|
|
2339 | return p->events; |
|
|
2340 | } |
|
|
2341 | else |
|
|
2342 | return 0; |
|
|
2343 | } |
|
|
2344 | |
|
|
2345 | inline_size void |
|
|
2346 | pri_adjust (EV_P_ W w) |
|
|
2347 | { |
|
|
2348 | int pri = ev_priority (w); |
|
|
2349 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2350 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2351 | ev_set_priority (w, pri); |
|
|
2352 | } |
|
|
2353 | |
|
|
2354 | inline_speed void |
699 | ev_start (W w, int active) |
2355 | ev_start (EV_P_ W w, int active) |
700 | { |
2356 | { |
|
|
2357 | pri_adjust (EV_A_ w); |
701 | w->active = active; |
2358 | w->active = active; |
|
|
2359 | ev_ref (EV_A); |
702 | } |
2360 | } |
703 | |
2361 | |
704 | static void |
2362 | inline_size void |
705 | ev_stop (W w) |
2363 | ev_stop (EV_P_ W w) |
706 | { |
2364 | { |
|
|
2365 | ev_unref (EV_A); |
707 | w->active = 0; |
2366 | w->active = 0; |
708 | } |
2367 | } |
709 | |
2368 | |
710 | /*****************************************************************************/ |
2369 | /*****************************************************************************/ |
711 | |
2370 | |
712 | void |
2371 | void noinline |
713 | evio_start (struct ev_io *w) |
2372 | ev_io_start (EV_P_ ev_io *w) |
714 | { |
2373 | { |
|
|
2374 | int fd = w->fd; |
|
|
2375 | |
715 | if (ev_is_active (w)) |
2376 | if (expect_false (ev_is_active (w))) |
716 | return; |
2377 | return; |
717 | |
2378 | |
718 | int fd = w->fd; |
2379 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2380 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
719 | |
2381 | |
|
|
2382 | EV_FREQUENT_CHECK; |
|
|
2383 | |
720 | ev_start ((W)w, 1); |
2384 | ev_start (EV_A_ (W)w, 1); |
721 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
2385 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
722 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2386 | wlist_add (&anfds[fd].head, (WL)w); |
723 | |
2387 | |
724 | ++fdchangecnt; |
2388 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
725 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
2389 | w->events &= ~EV__IOFDSET; |
726 | fdchanges [fdchangecnt - 1] = fd; |
|
|
727 | } |
|
|
728 | |
2390 | |
729 | void |
2391 | EV_FREQUENT_CHECK; |
|
|
2392 | } |
|
|
2393 | |
|
|
2394 | void noinline |
730 | evio_stop (struct ev_io *w) |
2395 | ev_io_stop (EV_P_ ev_io *w) |
731 | { |
2396 | { |
732 | ev_clear ((W)w); |
2397 | clear_pending (EV_A_ (W)w); |
733 | if (!ev_is_active (w)) |
2398 | if (expect_false (!ev_is_active (w))) |
734 | return; |
2399 | return; |
735 | |
2400 | |
|
|
2401 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2402 | |
|
|
2403 | EV_FREQUENT_CHECK; |
|
|
2404 | |
736 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2405 | wlist_del (&anfds[w->fd].head, (WL)w); |
737 | ev_stop ((W)w); |
2406 | ev_stop (EV_A_ (W)w); |
738 | |
2407 | |
739 | ++fdchangecnt; |
2408 | fd_change (EV_A_ w->fd, 1); |
740 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
741 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
742 | } |
|
|
743 | |
2409 | |
744 | void |
2410 | EV_FREQUENT_CHECK; |
|
|
2411 | } |
|
|
2412 | |
|
|
2413 | void noinline |
745 | evtimer_start (struct ev_timer *w) |
2414 | ev_timer_start (EV_P_ ev_timer *w) |
746 | { |
2415 | { |
747 | if (ev_is_active (w)) |
2416 | if (expect_false (ev_is_active (w))) |
748 | return; |
2417 | return; |
749 | |
2418 | |
750 | w->at += now; |
2419 | ev_at (w) += mn_now; |
751 | |
2420 | |
752 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
2421 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
753 | |
2422 | |
754 | ev_start ((W)w, ++timercnt); |
2423 | EV_FREQUENT_CHECK; |
755 | array_needsize (timers, timermax, timercnt, ); |
|
|
756 | timers [timercnt - 1] = w; |
|
|
757 | upheap ((WT *)timers, timercnt - 1); |
|
|
758 | } |
|
|
759 | |
2424 | |
760 | void |
2425 | ++timercnt; |
|
|
2426 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2427 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2428 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2429 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2430 | upheap (timers, ev_active (w)); |
|
|
2431 | |
|
|
2432 | EV_FREQUENT_CHECK; |
|
|
2433 | |
|
|
2434 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2435 | } |
|
|
2436 | |
|
|
2437 | void noinline |
761 | evtimer_stop (struct ev_timer *w) |
2438 | ev_timer_stop (EV_P_ ev_timer *w) |
762 | { |
2439 | { |
763 | ev_clear ((W)w); |
2440 | clear_pending (EV_A_ (W)w); |
764 | if (!ev_is_active (w)) |
2441 | if (expect_false (!ev_is_active (w))) |
765 | return; |
2442 | return; |
766 | |
2443 | |
767 | if (w->active < timercnt--) |
2444 | EV_FREQUENT_CHECK; |
|
|
2445 | |
|
|
2446 | { |
|
|
2447 | int active = ev_active (w); |
|
|
2448 | |
|
|
2449 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2450 | |
|
|
2451 | --timercnt; |
|
|
2452 | |
|
|
2453 | if (expect_true (active < timercnt + HEAP0)) |
768 | { |
2454 | { |
769 | timers [w->active - 1] = timers [timercnt]; |
2455 | timers [active] = timers [timercnt + HEAP0]; |
770 | downheap ((WT *)timers, timercnt, w->active - 1); |
2456 | adjustheap (timers, timercnt, active); |
771 | } |
2457 | } |
|
|
2458 | } |
772 | |
2459 | |
773 | w->at = w->repeat; |
2460 | EV_FREQUENT_CHECK; |
774 | |
2461 | |
|
|
2462 | ev_at (w) -= mn_now; |
|
|
2463 | |
775 | ev_stop ((W)w); |
2464 | ev_stop (EV_A_ (W)w); |
776 | } |
2465 | } |
777 | |
2466 | |
778 | void |
2467 | void noinline |
779 | evtimer_again (struct ev_timer *w) |
2468 | ev_timer_again (EV_P_ ev_timer *w) |
780 | { |
2469 | { |
|
|
2470 | EV_FREQUENT_CHECK; |
|
|
2471 | |
781 | if (ev_is_active (w)) |
2472 | if (ev_is_active (w)) |
782 | { |
2473 | { |
783 | if (w->repeat) |
2474 | if (w->repeat) |
784 | { |
2475 | { |
785 | w->at = now + w->repeat; |
2476 | ev_at (w) = mn_now + w->repeat; |
|
|
2477 | ANHE_at_cache (timers [ev_active (w)]); |
786 | downheap ((WT *)timers, timercnt, w->active - 1); |
2478 | adjustheap (timers, timercnt, ev_active (w)); |
787 | } |
2479 | } |
788 | else |
2480 | else |
789 | evtimer_stop (w); |
2481 | ev_timer_stop (EV_A_ w); |
790 | } |
2482 | } |
791 | else if (w->repeat) |
2483 | else if (w->repeat) |
|
|
2484 | { |
|
|
2485 | ev_at (w) = w->repeat; |
792 | evtimer_start (w); |
2486 | ev_timer_start (EV_A_ w); |
793 | } |
2487 | } |
794 | |
2488 | |
795 | void |
2489 | EV_FREQUENT_CHECK; |
|
|
2490 | } |
|
|
2491 | |
|
|
2492 | ev_tstamp |
|
|
2493 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2494 | { |
|
|
2495 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2496 | } |
|
|
2497 | |
|
|
2498 | #if EV_PERIODIC_ENABLE |
|
|
2499 | void noinline |
796 | evperiodic_start (struct ev_periodic *w) |
2500 | ev_periodic_start (EV_P_ ev_periodic *w) |
797 | { |
2501 | { |
798 | if (ev_is_active (w)) |
2502 | if (expect_false (ev_is_active (w))) |
799 | return; |
2503 | return; |
800 | |
2504 | |
801 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
2505 | if (w->reschedule_cb) |
802 | |
2506 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2507 | else if (w->interval) |
|
|
2508 | { |
|
|
2509 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
803 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2510 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
804 | if (w->interval) |
|
|
805 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
2511 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2512 | } |
|
|
2513 | else |
|
|
2514 | ev_at (w) = w->offset; |
806 | |
2515 | |
|
|
2516 | EV_FREQUENT_CHECK; |
|
|
2517 | |
|
|
2518 | ++periodiccnt; |
807 | ev_start ((W)w, ++periodiccnt); |
2519 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
808 | array_needsize (periodics, periodicmax, periodiccnt, ); |
2520 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
809 | periodics [periodiccnt - 1] = w; |
2521 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
810 | upheap ((WT *)periodics, periodiccnt - 1); |
2522 | ANHE_at_cache (periodics [ev_active (w)]); |
811 | } |
2523 | upheap (periodics, ev_active (w)); |
812 | |
2524 | |
813 | void |
2525 | EV_FREQUENT_CHECK; |
|
|
2526 | |
|
|
2527 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2528 | } |
|
|
2529 | |
|
|
2530 | void noinline |
814 | evperiodic_stop (struct ev_periodic *w) |
2531 | ev_periodic_stop (EV_P_ ev_periodic *w) |
815 | { |
2532 | { |
816 | ev_clear ((W)w); |
2533 | clear_pending (EV_A_ (W)w); |
817 | if (!ev_is_active (w)) |
2534 | if (expect_false (!ev_is_active (w))) |
818 | return; |
2535 | return; |
819 | |
2536 | |
820 | if (w->active < periodiccnt--) |
2537 | EV_FREQUENT_CHECK; |
|
|
2538 | |
|
|
2539 | { |
|
|
2540 | int active = ev_active (w); |
|
|
2541 | |
|
|
2542 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2543 | |
|
|
2544 | --periodiccnt; |
|
|
2545 | |
|
|
2546 | if (expect_true (active < periodiccnt + HEAP0)) |
821 | { |
2547 | { |
822 | periodics [w->active - 1] = periodics [periodiccnt]; |
2548 | periodics [active] = periodics [periodiccnt + HEAP0]; |
823 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
2549 | adjustheap (periodics, periodiccnt, active); |
824 | } |
2550 | } |
|
|
2551 | } |
825 | |
2552 | |
|
|
2553 | EV_FREQUENT_CHECK; |
|
|
2554 | |
826 | ev_stop ((W)w); |
2555 | ev_stop (EV_A_ (W)w); |
827 | } |
2556 | } |
828 | |
2557 | |
829 | void |
2558 | void noinline |
|
|
2559 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2560 | { |
|
|
2561 | /* TODO: use adjustheap and recalculation */ |
|
|
2562 | ev_periodic_stop (EV_A_ w); |
|
|
2563 | ev_periodic_start (EV_A_ w); |
|
|
2564 | } |
|
|
2565 | #endif |
|
|
2566 | |
|
|
2567 | #ifndef SA_RESTART |
|
|
2568 | # define SA_RESTART 0 |
|
|
2569 | #endif |
|
|
2570 | |
|
|
2571 | void noinline |
830 | evsignal_start (struct ev_signal *w) |
2572 | ev_signal_start (EV_P_ ev_signal *w) |
831 | { |
2573 | { |
|
|
2574 | #if EV_MULTIPLICITY |
|
|
2575 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2576 | #endif |
832 | if (ev_is_active (w)) |
2577 | if (expect_false (ev_is_active (w))) |
833 | return; |
2578 | return; |
834 | |
2579 | |
|
|
2580 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
2581 | |
|
|
2582 | evpipe_init (EV_A); |
|
|
2583 | |
|
|
2584 | EV_FREQUENT_CHECK; |
|
|
2585 | |
|
|
2586 | { |
|
|
2587 | #ifndef _WIN32 |
|
|
2588 | sigset_t full, prev; |
|
|
2589 | sigfillset (&full); |
|
|
2590 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2591 | #endif |
|
|
2592 | |
|
|
2593 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
|
|
2594 | |
|
|
2595 | #ifndef _WIN32 |
|
|
2596 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2597 | #endif |
|
|
2598 | } |
|
|
2599 | |
835 | ev_start ((W)w, 1); |
2600 | ev_start (EV_A_ (W)w, 1); |
836 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
837 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2601 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
838 | |
2602 | |
839 | if (!w->next) |
2603 | if (!((WL)w)->next) |
840 | { |
2604 | { |
|
|
2605 | #if _WIN32 |
|
|
2606 | signal (w->signum, ev_sighandler); |
|
|
2607 | #else |
841 | struct sigaction sa; |
2608 | struct sigaction sa = { }; |
842 | sa.sa_handler = sighandler; |
2609 | sa.sa_handler = ev_sighandler; |
843 | sigfillset (&sa.sa_mask); |
2610 | sigfillset (&sa.sa_mask); |
844 | sa.sa_flags = 0; |
2611 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
845 | sigaction (w->signum, &sa, 0); |
2612 | sigaction (w->signum, &sa, 0); |
|
|
2613 | #endif |
846 | } |
2614 | } |
847 | } |
|
|
848 | |
2615 | |
849 | void |
2616 | EV_FREQUENT_CHECK; |
|
|
2617 | } |
|
|
2618 | |
|
|
2619 | void noinline |
850 | evsignal_stop (struct ev_signal *w) |
2620 | ev_signal_stop (EV_P_ ev_signal *w) |
851 | { |
2621 | { |
852 | ev_clear ((W)w); |
2622 | clear_pending (EV_A_ (W)w); |
853 | if (!ev_is_active (w)) |
2623 | if (expect_false (!ev_is_active (w))) |
854 | return; |
2624 | return; |
855 | |
2625 | |
|
|
2626 | EV_FREQUENT_CHECK; |
|
|
2627 | |
856 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2628 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
857 | ev_stop ((W)w); |
2629 | ev_stop (EV_A_ (W)w); |
858 | |
2630 | |
859 | if (!signals [w->signum - 1].head) |
2631 | if (!signals [w->signum - 1].head) |
860 | signal (w->signum, SIG_DFL); |
2632 | signal (w->signum, SIG_DFL); |
861 | } |
|
|
862 | |
2633 | |
863 | void evidle_start (struct ev_idle *w) |
2634 | EV_FREQUENT_CHECK; |
|
|
2635 | } |
|
|
2636 | |
|
|
2637 | void |
|
|
2638 | ev_child_start (EV_P_ ev_child *w) |
864 | { |
2639 | { |
|
|
2640 | #if EV_MULTIPLICITY |
|
|
2641 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2642 | #endif |
865 | if (ev_is_active (w)) |
2643 | if (expect_false (ev_is_active (w))) |
866 | return; |
2644 | return; |
867 | |
2645 | |
868 | ev_start ((W)w, ++idlecnt); |
2646 | EV_FREQUENT_CHECK; |
869 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
870 | idles [idlecnt - 1] = w; |
|
|
871 | } |
|
|
872 | |
2647 | |
873 | void evidle_stop (struct ev_idle *w) |
2648 | ev_start (EV_A_ (W)w, 1); |
|
|
2649 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2650 | |
|
|
2651 | EV_FREQUENT_CHECK; |
|
|
2652 | } |
|
|
2653 | |
|
|
2654 | void |
|
|
2655 | ev_child_stop (EV_P_ ev_child *w) |
874 | { |
2656 | { |
875 | ev_clear ((W)w); |
2657 | clear_pending (EV_A_ (W)w); |
876 | if (ev_is_active (w)) |
2658 | if (expect_false (!ev_is_active (w))) |
877 | return; |
2659 | return; |
878 | |
2660 | |
879 | idles [w->active - 1] = idles [--idlecnt]; |
2661 | EV_FREQUENT_CHECK; |
|
|
2662 | |
|
|
2663 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
880 | ev_stop ((W)w); |
2664 | ev_stop (EV_A_ (W)w); |
881 | } |
|
|
882 | |
2665 | |
883 | void evprepare_start (struct ev_prepare *w) |
2666 | EV_FREQUENT_CHECK; |
|
|
2667 | } |
|
|
2668 | |
|
|
2669 | #if EV_STAT_ENABLE |
|
|
2670 | |
|
|
2671 | # ifdef _WIN32 |
|
|
2672 | # undef lstat |
|
|
2673 | # define lstat(a,b) _stati64 (a,b) |
|
|
2674 | # endif |
|
|
2675 | |
|
|
2676 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2677 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2678 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2679 | |
|
|
2680 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2681 | |
|
|
2682 | #if EV_USE_INOTIFY |
|
|
2683 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2684 | |
|
|
2685 | static void noinline |
|
|
2686 | infy_add (EV_P_ ev_stat *w) |
884 | { |
2687 | { |
885 | if (ev_is_active (w)) |
2688 | 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); |
|
|
2689 | |
|
|
2690 | if (w->wd < 0) |
|
|
2691 | { |
|
|
2692 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2693 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2694 | |
|
|
2695 | /* monitor some parent directory for speedup hints */ |
|
|
2696 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2697 | /* but an efficiency issue only */ |
|
|
2698 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2699 | { |
|
|
2700 | char path [4096]; |
|
|
2701 | strcpy (path, w->path); |
|
|
2702 | |
|
|
2703 | do |
|
|
2704 | { |
|
|
2705 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2706 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2707 | |
|
|
2708 | char *pend = strrchr (path, '/'); |
|
|
2709 | |
|
|
2710 | if (!pend || pend == path) |
|
|
2711 | break; |
|
|
2712 | |
|
|
2713 | *pend = 0; |
|
|
2714 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2715 | } |
|
|
2716 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2717 | } |
|
|
2718 | } |
|
|
2719 | |
|
|
2720 | if (w->wd >= 0) |
|
|
2721 | { |
|
|
2722 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2723 | |
|
|
2724 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2725 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2726 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2727 | struct statfs sfs; |
|
|
2728 | |
|
|
2729 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2730 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2731 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2732 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2733 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2734 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2735 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2736 | return; |
|
|
2737 | |
|
|
2738 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2739 | ev_timer_again (EV_A_ &w->timer); |
|
|
2740 | } |
|
|
2741 | } |
|
|
2742 | |
|
|
2743 | static void noinline |
|
|
2744 | infy_del (EV_P_ ev_stat *w) |
|
|
2745 | { |
|
|
2746 | int slot; |
|
|
2747 | int wd = w->wd; |
|
|
2748 | |
|
|
2749 | if (wd < 0) |
886 | return; |
2750 | return; |
887 | |
2751 | |
|
|
2752 | w->wd = -2; |
|
|
2753 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2754 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2755 | |
|
|
2756 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2757 | inotify_rm_watch (fs_fd, wd); |
|
|
2758 | } |
|
|
2759 | |
|
|
2760 | static void noinline |
|
|
2761 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2762 | { |
|
|
2763 | if (slot < 0) |
|
|
2764 | /* overflow, need to check for all hash slots */ |
|
|
2765 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2766 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2767 | else |
|
|
2768 | { |
|
|
2769 | WL w_; |
|
|
2770 | |
|
|
2771 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2772 | { |
|
|
2773 | ev_stat *w = (ev_stat *)w_; |
|
|
2774 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2775 | |
|
|
2776 | if (w->wd == wd || wd == -1) |
|
|
2777 | { |
|
|
2778 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2779 | { |
|
|
2780 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2781 | w->wd = -1; |
|
|
2782 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2783 | } |
|
|
2784 | |
|
|
2785 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2786 | } |
|
|
2787 | } |
|
|
2788 | } |
|
|
2789 | } |
|
|
2790 | |
|
|
2791 | static void |
|
|
2792 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2793 | { |
|
|
2794 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2795 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2796 | int ofs; |
|
|
2797 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2798 | |
|
|
2799 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2800 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2801 | } |
|
|
2802 | |
|
|
2803 | inline_size void |
|
|
2804 | check_2625 (EV_P) |
|
|
2805 | { |
|
|
2806 | /* kernels < 2.6.25 are borked |
|
|
2807 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2808 | */ |
|
|
2809 | struct utsname buf; |
|
|
2810 | int major, minor, micro; |
|
|
2811 | |
|
|
2812 | if (uname (&buf)) |
|
|
2813 | return; |
|
|
2814 | |
|
|
2815 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2816 | return; |
|
|
2817 | |
|
|
2818 | if (major < 2 |
|
|
2819 | || (major == 2 && minor < 6) |
|
|
2820 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2821 | return; |
|
|
2822 | |
|
|
2823 | fs_2625 = 1; |
|
|
2824 | } |
|
|
2825 | |
|
|
2826 | inline_size void |
|
|
2827 | infy_init (EV_P) |
|
|
2828 | { |
|
|
2829 | if (fs_fd != -2) |
|
|
2830 | return; |
|
|
2831 | |
|
|
2832 | fs_fd = -1; |
|
|
2833 | |
|
|
2834 | check_2625 (EV_A); |
|
|
2835 | |
|
|
2836 | fs_fd = inotify_init (); |
|
|
2837 | |
|
|
2838 | if (fs_fd >= 0) |
|
|
2839 | { |
|
|
2840 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2841 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2842 | ev_io_start (EV_A_ &fs_w); |
|
|
2843 | } |
|
|
2844 | } |
|
|
2845 | |
|
|
2846 | inline_size void |
|
|
2847 | infy_fork (EV_P) |
|
|
2848 | { |
|
|
2849 | int slot; |
|
|
2850 | |
|
|
2851 | if (fs_fd < 0) |
|
|
2852 | return; |
|
|
2853 | |
|
|
2854 | close (fs_fd); |
|
|
2855 | fs_fd = inotify_init (); |
|
|
2856 | |
|
|
2857 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2858 | { |
|
|
2859 | WL w_ = fs_hash [slot].head; |
|
|
2860 | fs_hash [slot].head = 0; |
|
|
2861 | |
|
|
2862 | while (w_) |
|
|
2863 | { |
|
|
2864 | ev_stat *w = (ev_stat *)w_; |
|
|
2865 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2866 | |
|
|
2867 | w->wd = -1; |
|
|
2868 | |
|
|
2869 | if (fs_fd >= 0) |
|
|
2870 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2871 | else |
|
|
2872 | ev_timer_again (EV_A_ &w->timer); |
|
|
2873 | } |
|
|
2874 | } |
|
|
2875 | } |
|
|
2876 | |
|
|
2877 | #endif |
|
|
2878 | |
|
|
2879 | #ifdef _WIN32 |
|
|
2880 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
2881 | #else |
|
|
2882 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
2883 | #endif |
|
|
2884 | |
|
|
2885 | void |
|
|
2886 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2887 | { |
|
|
2888 | if (lstat (w->path, &w->attr) < 0) |
|
|
2889 | w->attr.st_nlink = 0; |
|
|
2890 | else if (!w->attr.st_nlink) |
|
|
2891 | w->attr.st_nlink = 1; |
|
|
2892 | } |
|
|
2893 | |
|
|
2894 | static void noinline |
|
|
2895 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2896 | { |
|
|
2897 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2898 | |
|
|
2899 | /* we copy this here each the time so that */ |
|
|
2900 | /* prev has the old value when the callback gets invoked */ |
|
|
2901 | w->prev = w->attr; |
|
|
2902 | ev_stat_stat (EV_A_ w); |
|
|
2903 | |
|
|
2904 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2905 | if ( |
|
|
2906 | w->prev.st_dev != w->attr.st_dev |
|
|
2907 | || w->prev.st_ino != w->attr.st_ino |
|
|
2908 | || w->prev.st_mode != w->attr.st_mode |
|
|
2909 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2910 | || w->prev.st_uid != w->attr.st_uid |
|
|
2911 | || w->prev.st_gid != w->attr.st_gid |
|
|
2912 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2913 | || w->prev.st_size != w->attr.st_size |
|
|
2914 | || w->prev.st_atime != w->attr.st_atime |
|
|
2915 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2916 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2917 | ) { |
|
|
2918 | #if EV_USE_INOTIFY |
|
|
2919 | if (fs_fd >= 0) |
|
|
2920 | { |
|
|
2921 | infy_del (EV_A_ w); |
|
|
2922 | infy_add (EV_A_ w); |
|
|
2923 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2924 | } |
|
|
2925 | #endif |
|
|
2926 | |
|
|
2927 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2928 | } |
|
|
2929 | } |
|
|
2930 | |
|
|
2931 | void |
|
|
2932 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2933 | { |
|
|
2934 | if (expect_false (ev_is_active (w))) |
|
|
2935 | return; |
|
|
2936 | |
|
|
2937 | ev_stat_stat (EV_A_ w); |
|
|
2938 | |
|
|
2939 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
2940 | w->interval = MIN_STAT_INTERVAL; |
|
|
2941 | |
|
|
2942 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
2943 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2944 | |
|
|
2945 | #if EV_USE_INOTIFY |
|
|
2946 | infy_init (EV_A); |
|
|
2947 | |
|
|
2948 | if (fs_fd >= 0) |
|
|
2949 | infy_add (EV_A_ w); |
|
|
2950 | else |
|
|
2951 | #endif |
|
|
2952 | ev_timer_again (EV_A_ &w->timer); |
|
|
2953 | |
|
|
2954 | ev_start (EV_A_ (W)w, 1); |
|
|
2955 | |
|
|
2956 | EV_FREQUENT_CHECK; |
|
|
2957 | } |
|
|
2958 | |
|
|
2959 | void |
|
|
2960 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2961 | { |
|
|
2962 | clear_pending (EV_A_ (W)w); |
|
|
2963 | if (expect_false (!ev_is_active (w))) |
|
|
2964 | return; |
|
|
2965 | |
|
|
2966 | EV_FREQUENT_CHECK; |
|
|
2967 | |
|
|
2968 | #if EV_USE_INOTIFY |
|
|
2969 | infy_del (EV_A_ w); |
|
|
2970 | #endif |
|
|
2971 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2972 | |
|
|
2973 | ev_stop (EV_A_ (W)w); |
|
|
2974 | |
|
|
2975 | EV_FREQUENT_CHECK; |
|
|
2976 | } |
|
|
2977 | #endif |
|
|
2978 | |
|
|
2979 | #if EV_IDLE_ENABLE |
|
|
2980 | void |
|
|
2981 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2982 | { |
|
|
2983 | if (expect_false (ev_is_active (w))) |
|
|
2984 | return; |
|
|
2985 | |
|
|
2986 | pri_adjust (EV_A_ (W)w); |
|
|
2987 | |
|
|
2988 | EV_FREQUENT_CHECK; |
|
|
2989 | |
|
|
2990 | { |
|
|
2991 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2992 | |
|
|
2993 | ++idleall; |
|
|
2994 | ev_start (EV_A_ (W)w, active); |
|
|
2995 | |
|
|
2996 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2997 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2998 | } |
|
|
2999 | |
|
|
3000 | EV_FREQUENT_CHECK; |
|
|
3001 | } |
|
|
3002 | |
|
|
3003 | void |
|
|
3004 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3005 | { |
|
|
3006 | clear_pending (EV_A_ (W)w); |
|
|
3007 | if (expect_false (!ev_is_active (w))) |
|
|
3008 | return; |
|
|
3009 | |
|
|
3010 | EV_FREQUENT_CHECK; |
|
|
3011 | |
|
|
3012 | { |
|
|
3013 | int active = ev_active (w); |
|
|
3014 | |
|
|
3015 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3016 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3017 | |
|
|
3018 | ev_stop (EV_A_ (W)w); |
|
|
3019 | --idleall; |
|
|
3020 | } |
|
|
3021 | |
|
|
3022 | EV_FREQUENT_CHECK; |
|
|
3023 | } |
|
|
3024 | #endif |
|
|
3025 | |
|
|
3026 | void |
|
|
3027 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3028 | { |
|
|
3029 | if (expect_false (ev_is_active (w))) |
|
|
3030 | return; |
|
|
3031 | |
|
|
3032 | EV_FREQUENT_CHECK; |
|
|
3033 | |
888 | ev_start ((W)w, ++preparecnt); |
3034 | ev_start (EV_A_ (W)w, ++preparecnt); |
889 | array_needsize (prepares, preparemax, preparecnt, ); |
3035 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
890 | prepares [preparecnt - 1] = w; |
3036 | prepares [preparecnt - 1] = w; |
891 | } |
|
|
892 | |
3037 | |
|
|
3038 | EV_FREQUENT_CHECK; |
|
|
3039 | } |
|
|
3040 | |
|
|
3041 | void |
893 | void evprepare_stop (struct ev_prepare *w) |
3042 | ev_prepare_stop (EV_P_ ev_prepare *w) |
894 | { |
3043 | { |
895 | ev_clear ((W)w); |
3044 | clear_pending (EV_A_ (W)w); |
896 | if (ev_is_active (w)) |
3045 | if (expect_false (!ev_is_active (w))) |
897 | return; |
3046 | return; |
898 | |
3047 | |
|
|
3048 | EV_FREQUENT_CHECK; |
|
|
3049 | |
|
|
3050 | { |
|
|
3051 | int active = ev_active (w); |
|
|
3052 | |
899 | prepares [w->active - 1] = prepares [--preparecnt]; |
3053 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3054 | ev_active (prepares [active - 1]) = active; |
|
|
3055 | } |
|
|
3056 | |
900 | ev_stop ((W)w); |
3057 | ev_stop (EV_A_ (W)w); |
901 | } |
|
|
902 | |
3058 | |
|
|
3059 | EV_FREQUENT_CHECK; |
|
|
3060 | } |
|
|
3061 | |
|
|
3062 | void |
903 | void evcheck_start (struct ev_check *w) |
3063 | ev_check_start (EV_P_ ev_check *w) |
904 | { |
3064 | { |
905 | if (ev_is_active (w)) |
3065 | if (expect_false (ev_is_active (w))) |
906 | return; |
3066 | return; |
907 | |
3067 | |
|
|
3068 | EV_FREQUENT_CHECK; |
|
|
3069 | |
908 | ev_start ((W)w, ++checkcnt); |
3070 | ev_start (EV_A_ (W)w, ++checkcnt); |
909 | array_needsize (checks, checkmax, checkcnt, ); |
3071 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
910 | checks [checkcnt - 1] = w; |
3072 | checks [checkcnt - 1] = w; |
911 | } |
|
|
912 | |
3073 | |
|
|
3074 | EV_FREQUENT_CHECK; |
|
|
3075 | } |
|
|
3076 | |
|
|
3077 | void |
913 | void evcheck_stop (struct ev_check *w) |
3078 | ev_check_stop (EV_P_ ev_check *w) |
914 | { |
3079 | { |
915 | ev_clear ((W)w); |
3080 | clear_pending (EV_A_ (W)w); |
916 | if (ev_is_active (w)) |
3081 | if (expect_false (!ev_is_active (w))) |
917 | return; |
3082 | return; |
918 | |
3083 | |
|
|
3084 | EV_FREQUENT_CHECK; |
|
|
3085 | |
|
|
3086 | { |
|
|
3087 | int active = ev_active (w); |
|
|
3088 | |
919 | checks [w->active - 1] = checks [--checkcnt]; |
3089 | checks [active - 1] = checks [--checkcnt]; |
|
|
3090 | ev_active (checks [active - 1]) = active; |
|
|
3091 | } |
|
|
3092 | |
920 | ev_stop ((W)w); |
3093 | ev_stop (EV_A_ (W)w); |
921 | } |
|
|
922 | |
3094 | |
923 | void evchild_start (struct ev_child *w) |
3095 | EV_FREQUENT_CHECK; |
|
|
3096 | } |
|
|
3097 | |
|
|
3098 | #if EV_EMBED_ENABLE |
|
|
3099 | void noinline |
|
|
3100 | ev_embed_sweep (EV_P_ ev_embed *w) |
924 | { |
3101 | { |
|
|
3102 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3103 | } |
|
|
3104 | |
|
|
3105 | static void |
|
|
3106 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3107 | { |
|
|
3108 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3109 | |
925 | if (ev_is_active (w)) |
3110 | if (ev_cb (w)) |
|
|
3111 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3112 | else |
|
|
3113 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3114 | } |
|
|
3115 | |
|
|
3116 | static void |
|
|
3117 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3118 | { |
|
|
3119 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3120 | |
|
|
3121 | { |
|
|
3122 | struct ev_loop *loop = w->other; |
|
|
3123 | |
|
|
3124 | while (fdchangecnt) |
|
|
3125 | { |
|
|
3126 | fd_reify (EV_A); |
|
|
3127 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3128 | } |
|
|
3129 | } |
|
|
3130 | } |
|
|
3131 | |
|
|
3132 | static void |
|
|
3133 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3134 | { |
|
|
3135 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3136 | |
|
|
3137 | ev_embed_stop (EV_A_ w); |
|
|
3138 | |
|
|
3139 | { |
|
|
3140 | struct ev_loop *loop = w->other; |
|
|
3141 | |
|
|
3142 | ev_loop_fork (EV_A); |
|
|
3143 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3144 | } |
|
|
3145 | |
|
|
3146 | ev_embed_start (EV_A_ w); |
|
|
3147 | } |
|
|
3148 | |
|
|
3149 | #if 0 |
|
|
3150 | static void |
|
|
3151 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3152 | { |
|
|
3153 | ev_idle_stop (EV_A_ idle); |
|
|
3154 | } |
|
|
3155 | #endif |
|
|
3156 | |
|
|
3157 | void |
|
|
3158 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3159 | { |
|
|
3160 | if (expect_false (ev_is_active (w))) |
926 | return; |
3161 | return; |
927 | |
3162 | |
|
|
3163 | { |
|
|
3164 | struct ev_loop *loop = w->other; |
|
|
3165 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3166 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3167 | } |
|
|
3168 | |
|
|
3169 | EV_FREQUENT_CHECK; |
|
|
3170 | |
|
|
3171 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3172 | ev_io_start (EV_A_ &w->io); |
|
|
3173 | |
|
|
3174 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3175 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3176 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3177 | |
|
|
3178 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3179 | ev_fork_start (EV_A_ &w->fork); |
|
|
3180 | |
|
|
3181 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3182 | |
928 | ev_start ((W)w, 1); |
3183 | ev_start (EV_A_ (W)w, 1); |
929 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
930 | } |
|
|
931 | |
3184 | |
932 | void evchild_stop (struct ev_child *w) |
3185 | EV_FREQUENT_CHECK; |
|
|
3186 | } |
|
|
3187 | |
|
|
3188 | void |
|
|
3189 | ev_embed_stop (EV_P_ ev_embed *w) |
933 | { |
3190 | { |
934 | ev_clear ((W)w); |
3191 | clear_pending (EV_A_ (W)w); |
935 | if (ev_is_active (w)) |
3192 | if (expect_false (!ev_is_active (w))) |
936 | return; |
3193 | return; |
937 | |
3194 | |
938 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3195 | EV_FREQUENT_CHECK; |
|
|
3196 | |
|
|
3197 | ev_io_stop (EV_A_ &w->io); |
|
|
3198 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3199 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3200 | |
|
|
3201 | EV_FREQUENT_CHECK; |
|
|
3202 | } |
|
|
3203 | #endif |
|
|
3204 | |
|
|
3205 | #if EV_FORK_ENABLE |
|
|
3206 | void |
|
|
3207 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3208 | { |
|
|
3209 | if (expect_false (ev_is_active (w))) |
|
|
3210 | return; |
|
|
3211 | |
|
|
3212 | EV_FREQUENT_CHECK; |
|
|
3213 | |
|
|
3214 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3215 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3216 | forks [forkcnt - 1] = w; |
|
|
3217 | |
|
|
3218 | EV_FREQUENT_CHECK; |
|
|
3219 | } |
|
|
3220 | |
|
|
3221 | void |
|
|
3222 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3223 | { |
|
|
3224 | clear_pending (EV_A_ (W)w); |
|
|
3225 | if (expect_false (!ev_is_active (w))) |
|
|
3226 | return; |
|
|
3227 | |
|
|
3228 | EV_FREQUENT_CHECK; |
|
|
3229 | |
|
|
3230 | { |
|
|
3231 | int active = ev_active (w); |
|
|
3232 | |
|
|
3233 | forks [active - 1] = forks [--forkcnt]; |
|
|
3234 | ev_active (forks [active - 1]) = active; |
|
|
3235 | } |
|
|
3236 | |
939 | ev_stop ((W)w); |
3237 | ev_stop (EV_A_ (W)w); |
|
|
3238 | |
|
|
3239 | EV_FREQUENT_CHECK; |
940 | } |
3240 | } |
|
|
3241 | #endif |
|
|
3242 | |
|
|
3243 | #if EV_ASYNC_ENABLE |
|
|
3244 | void |
|
|
3245 | ev_async_start (EV_P_ ev_async *w) |
|
|
3246 | { |
|
|
3247 | if (expect_false (ev_is_active (w))) |
|
|
3248 | return; |
|
|
3249 | |
|
|
3250 | evpipe_init (EV_A); |
|
|
3251 | |
|
|
3252 | EV_FREQUENT_CHECK; |
|
|
3253 | |
|
|
3254 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3255 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3256 | asyncs [asynccnt - 1] = w; |
|
|
3257 | |
|
|
3258 | EV_FREQUENT_CHECK; |
|
|
3259 | } |
|
|
3260 | |
|
|
3261 | void |
|
|
3262 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3263 | { |
|
|
3264 | clear_pending (EV_A_ (W)w); |
|
|
3265 | if (expect_false (!ev_is_active (w))) |
|
|
3266 | return; |
|
|
3267 | |
|
|
3268 | EV_FREQUENT_CHECK; |
|
|
3269 | |
|
|
3270 | { |
|
|
3271 | int active = ev_active (w); |
|
|
3272 | |
|
|
3273 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3274 | ev_active (asyncs [active - 1]) = active; |
|
|
3275 | } |
|
|
3276 | |
|
|
3277 | ev_stop (EV_A_ (W)w); |
|
|
3278 | |
|
|
3279 | EV_FREQUENT_CHECK; |
|
|
3280 | } |
|
|
3281 | |
|
|
3282 | void |
|
|
3283 | ev_async_send (EV_P_ ev_async *w) |
|
|
3284 | { |
|
|
3285 | w->sent = 1; |
|
|
3286 | evpipe_write (EV_A_ &gotasync); |
|
|
3287 | } |
|
|
3288 | #endif |
941 | |
3289 | |
942 | /*****************************************************************************/ |
3290 | /*****************************************************************************/ |
943 | |
3291 | |
944 | struct ev_once |
3292 | struct ev_once |
945 | { |
3293 | { |
946 | struct ev_io io; |
3294 | ev_io io; |
947 | struct ev_timer to; |
3295 | ev_timer to; |
948 | void (*cb)(int revents, void *arg); |
3296 | void (*cb)(int revents, void *arg); |
949 | void *arg; |
3297 | void *arg; |
950 | }; |
3298 | }; |
951 | |
3299 | |
952 | static void |
3300 | static void |
953 | once_cb (struct ev_once *once, int revents) |
3301 | once_cb (EV_P_ struct ev_once *once, int revents) |
954 | { |
3302 | { |
955 | void (*cb)(int revents, void *arg) = once->cb; |
3303 | void (*cb)(int revents, void *arg) = once->cb; |
956 | void *arg = once->arg; |
3304 | void *arg = once->arg; |
957 | |
3305 | |
958 | evio_stop (&once->io); |
3306 | ev_io_stop (EV_A_ &once->io); |
959 | evtimer_stop (&once->to); |
3307 | ev_timer_stop (EV_A_ &once->to); |
960 | free (once); |
3308 | ev_free (once); |
961 | |
3309 | |
962 | cb (revents, arg); |
3310 | cb (revents, arg); |
963 | } |
3311 | } |
964 | |
3312 | |
965 | static void |
3313 | static void |
966 | once_cb_io (struct ev_io *w, int revents) |
3314 | once_cb_io (EV_P_ ev_io *w, int revents) |
967 | { |
3315 | { |
968 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3316 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3317 | |
|
|
3318 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
969 | } |
3319 | } |
970 | |
3320 | |
971 | static void |
3321 | static void |
972 | once_cb_to (struct ev_timer *w, int revents) |
3322 | once_cb_to (EV_P_ ev_timer *w, int revents) |
973 | { |
3323 | { |
974 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3324 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
975 | } |
|
|
976 | |
3325 | |
|
|
3326 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
3327 | } |
|
|
3328 | |
977 | void |
3329 | void |
978 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3330 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
979 | { |
3331 | { |
980 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
3332 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
981 | |
3333 | |
982 | if (!once) |
3334 | if (expect_false (!once)) |
983 | cb (EV_ERROR, arg); |
3335 | { |
984 | else |
3336 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
3337 | return; |
985 | { |
3338 | } |
|
|
3339 | |
986 | once->cb = cb; |
3340 | once->cb = cb; |
987 | once->arg = arg; |
3341 | once->arg = arg; |
988 | |
3342 | |
989 | evw_init (&once->io, once_cb_io); |
3343 | ev_init (&once->io, once_cb_io); |
990 | |
|
|
991 | if (fd >= 0) |
3344 | if (fd >= 0) |
|
|
3345 | { |
|
|
3346 | ev_io_set (&once->io, fd, events); |
|
|
3347 | ev_io_start (EV_A_ &once->io); |
|
|
3348 | } |
|
|
3349 | |
|
|
3350 | ev_init (&once->to, once_cb_to); |
|
|
3351 | if (timeout >= 0.) |
|
|
3352 | { |
|
|
3353 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3354 | ev_timer_start (EV_A_ &once->to); |
|
|
3355 | } |
|
|
3356 | } |
|
|
3357 | |
|
|
3358 | /*****************************************************************************/ |
|
|
3359 | |
|
|
3360 | #if EV_WALK_ENABLE |
|
|
3361 | void |
|
|
3362 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3363 | { |
|
|
3364 | int i, j; |
|
|
3365 | ev_watcher_list *wl, *wn; |
|
|
3366 | |
|
|
3367 | if (types & (EV_IO | EV_EMBED)) |
|
|
3368 | for (i = 0; i < anfdmax; ++i) |
|
|
3369 | for (wl = anfds [i].head; wl; ) |
992 | { |
3370 | { |
993 | evio_set (&once->io, fd, events); |
3371 | wn = wl->next; |
994 | evio_start (&once->io); |
3372 | |
|
|
3373 | #if EV_EMBED_ENABLE |
|
|
3374 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3375 | { |
|
|
3376 | if (types & EV_EMBED) |
|
|
3377 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3378 | } |
|
|
3379 | else |
|
|
3380 | #endif |
|
|
3381 | #if EV_USE_INOTIFY |
|
|
3382 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3383 | ; |
|
|
3384 | else |
|
|
3385 | #endif |
|
|
3386 | if ((ev_io *)wl != &pipe_w) |
|
|
3387 | if (types & EV_IO) |
|
|
3388 | cb (EV_A_ EV_IO, wl); |
|
|
3389 | |
|
|
3390 | wl = wn; |
995 | } |
3391 | } |
996 | |
3392 | |
997 | evw_init (&once->to, once_cb_to); |
3393 | if (types & (EV_TIMER | EV_STAT)) |
998 | |
3394 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
999 | if (timeout >= 0.) |
3395 | #if EV_STAT_ENABLE |
|
|
3396 | /*TODO: timer is not always active*/ |
|
|
3397 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1000 | { |
3398 | { |
1001 | evtimer_set (&once->to, timeout, 0.); |
3399 | if (types & EV_STAT) |
1002 | evtimer_start (&once->to); |
3400 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1003 | } |
3401 | } |
1004 | } |
3402 | else |
1005 | } |
3403 | #endif |
|
|
3404 | if (types & EV_TIMER) |
|
|
3405 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1006 | |
3406 | |
1007 | /*****************************************************************************/ |
3407 | #if EV_PERIODIC_ENABLE |
|
|
3408 | if (types & EV_PERIODIC) |
|
|
3409 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3410 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3411 | #endif |
1008 | |
3412 | |
1009 | #if 0 |
3413 | #if EV_IDLE_ENABLE |
|
|
3414 | if (types & EV_IDLE) |
|
|
3415 | for (j = NUMPRI; i--; ) |
|
|
3416 | for (i = idlecnt [j]; i--; ) |
|
|
3417 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3418 | #endif |
1010 | |
3419 | |
1011 | struct ev_io wio; |
3420 | #if EV_FORK_ENABLE |
|
|
3421 | if (types & EV_FORK) |
|
|
3422 | for (i = forkcnt; i--; ) |
|
|
3423 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3424 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3425 | #endif |
1012 | |
3426 | |
1013 | static void |
3427 | #if EV_ASYNC_ENABLE |
1014 | sin_cb (struct ev_io *w, int revents) |
3428 | if (types & EV_ASYNC) |
1015 | { |
3429 | for (i = asynccnt; i--; ) |
1016 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
3430 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1017 | } |
3431 | #endif |
1018 | |
3432 | |
1019 | static void |
3433 | if (types & EV_PREPARE) |
1020 | ocb (struct ev_timer *w, int revents) |
3434 | for (i = preparecnt; i--; ) |
1021 | { |
3435 | #if EV_EMBED_ENABLE |
1022 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
3436 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1023 | evtimer_stop (w); |
3437 | #endif |
1024 | evtimer_start (w); |
3438 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1025 | } |
|
|
1026 | |
3439 | |
1027 | static void |
3440 | if (types & EV_CHECK) |
1028 | scb (struct ev_signal *w, int revents) |
3441 | for (i = checkcnt; i--; ) |
1029 | { |
3442 | cb (EV_A_ EV_CHECK, checks [i]); |
1030 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1031 | evio_stop (&wio); |
|
|
1032 | evio_start (&wio); |
|
|
1033 | } |
|
|
1034 | |
3443 | |
1035 | static void |
3444 | if (types & EV_SIGNAL) |
1036 | gcb (struct ev_signal *w, int revents) |
|
|
1037 | { |
|
|
1038 | fprintf (stderr, "generic %x\n", revents); |
|
|
1039 | |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | int main (void) |
|
|
1043 | { |
|
|
1044 | ev_init (0); |
|
|
1045 | |
|
|
1046 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
1047 | evio_start (&wio); |
|
|
1048 | |
|
|
1049 | struct ev_timer t[10000]; |
|
|
1050 | |
|
|
1051 | #if 0 |
|
|
1052 | int i; |
|
|
1053 | for (i = 0; i < 10000; ++i) |
3445 | for (i = 0; i < signalmax; ++i) |
1054 | { |
3446 | for (wl = signals [i].head; wl; ) |
1055 | struct ev_timer *w = t + i; |
3447 | { |
1056 | evw_init (w, ocb, i); |
3448 | wn = wl->next; |
1057 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
3449 | cb (EV_A_ EV_SIGNAL, wl); |
1058 | evtimer_start (w); |
3450 | wl = wn; |
1059 | if (drand48 () < 0.5) |
3451 | } |
1060 | evtimer_stop (w); |
|
|
1061 | } |
|
|
1062 | #endif |
|
|
1063 | |
3452 | |
1064 | struct ev_timer t1; |
3453 | if (types & EV_CHILD) |
1065 | evtimer_init (&t1, ocb, 5, 10); |
3454 | for (i = EV_PID_HASHSIZE; i--; ) |
1066 | evtimer_start (&t1); |
3455 | for (wl = childs [i]; wl; ) |
1067 | |
3456 | { |
1068 | struct ev_signal sig; |
3457 | wn = wl->next; |
1069 | evsignal_init (&sig, scb, SIGQUIT); |
3458 | cb (EV_A_ EV_CHILD, wl); |
1070 | evsignal_start (&sig); |
3459 | wl = wn; |
1071 | |
3460 | } |
1072 | struct ev_check cw; |
3461 | /* EV_STAT 0x00001000 /* stat data changed */ |
1073 | evcheck_init (&cw, gcb); |
3462 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
1074 | evcheck_start (&cw); |
|
|
1075 | |
|
|
1076 | struct ev_idle iw; |
|
|
1077 | evidle_init (&iw, gcb); |
|
|
1078 | evidle_start (&iw); |
|
|
1079 | |
|
|
1080 | ev_loop (0); |
|
|
1081 | |
|
|
1082 | return 0; |
|
|
1083 | } |
3463 | } |
1084 | |
|
|
1085 | #endif |
3464 | #endif |
1086 | |
3465 | |
|
|
3466 | #if EV_MULTIPLICITY |
|
|
3467 | #include "ev_wrap.h" |
|
|
3468 | #endif |
1087 | |
3469 | |
|
|
3470 | #ifdef __cplusplus |
|
|
3471 | } |
|
|
3472 | #endif |
1088 | |
3473 | |
1089 | |
|
|