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 |
29 | #if EV_USE_CONFIG_H |
46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
30 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_SYSCALL |
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53 | # ifndef EV_USE_CLOCK_SYSCALL |
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54 | # define EV_USE_CLOCK_SYSCALL 1 |
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55 | # ifndef EV_USE_REALTIME |
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56 | # define EV_USE_REALTIME 0 |
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57 | # endif |
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58 | # ifndef EV_USE_MONOTONIC |
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59 | # define EV_USE_MONOTONIC 1 |
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60 | # endif |
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61 | # endif |
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62 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
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63 | # define EV_USE_CLOCK_SYSCALL 0 |
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64 | # endif |
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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 | |
31 | #endif |
146 | #endif |
32 | |
147 | |
33 | #include <math.h> |
148 | #include <math.h> |
34 | #include <stdlib.h> |
149 | #include <stdlib.h> |
35 | #include <unistd.h> |
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36 | #include <fcntl.h> |
150 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
151 | #include <stddef.h> |
39 | |
152 | |
40 | #include <stdio.h> |
153 | #include <stdio.h> |
41 | |
154 | |
42 | #include <assert.h> |
155 | #include <assert.h> |
43 | #include <errno.h> |
156 | #include <errno.h> |
44 | #include <sys/types.h> |
157 | #include <sys/types.h> |
45 | #include <sys/wait.h> |
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46 | #include <sys/time.h> |
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47 | #include <time.h> |
158 | #include <time.h> |
48 | |
159 | |
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160 | #include <signal.h> |
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161 | |
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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 |
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178 | # endif |
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179 | #endif |
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180 | |
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181 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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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 |
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188 | # endif |
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189 | #endif |
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190 | |
49 | #ifndef EV_USE_MONOTONIC |
191 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
192 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
51 | # define EV_USE_MONOTONIC 1 |
193 | # define EV_USE_MONOTONIC 1 |
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194 | # else |
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195 | # define EV_USE_MONOTONIC 0 |
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196 | # endif |
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197 | #endif |
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198 | |
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199 | #ifndef EV_USE_REALTIME |
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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 |
52 | # endif |
208 | # endif |
53 | #endif |
209 | #endif |
54 | |
210 | |
55 | #ifndef EV_USE_SELECT |
211 | #ifndef EV_USE_SELECT |
56 | # define EV_USE_SELECT 1 |
212 | # define EV_USE_SELECT 1 |
57 | #endif |
213 | #endif |
58 | |
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 | |
59 | #ifndef EV_USE_EPOLL |
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 |
60 | # define EV_USE_EPOLL 0 |
227 | # define EV_USE_EPOLL 0 |
61 | #endif |
228 | # endif |
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229 | #endif |
62 | |
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 | |
63 | #ifndef EV_USE_REALTIME |
235 | #ifndef EV_USE_PORT |
64 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
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 |
65 | #endif |
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 */ |
66 | |
370 | |
67 | #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) */ |
68 | #define MAX_BLOCKTIME 59.731 |
372 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
69 | #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 */ |
70 | |
374 | |
71 | #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 |
72 | |
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 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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398 | |
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399 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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400 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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401 | |
73 | typedef struct ev_watcher *W; |
402 | typedef ev_watcher *W; |
74 | typedef struct ev_watcher_list *WL; |
403 | typedef ev_watcher_list *WL; |
75 | typedef struct ev_watcher_time *WT; |
404 | typedef ev_watcher_time *WT; |
76 | |
405 | |
77 | static ev_tstamp now, diff; /* monotonic clock */ |
406 | #define ev_active(w) ((W)(w))->active |
78 | ev_tstamp ev_now; |
407 | #define ev_at(w) ((WT)(w))->at |
79 | int ev_method; |
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80 | |
408 | |
81 | static int have_monotonic; /* runtime */ |
409 | #if EV_USE_REALTIME |
|
|
410 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
411 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
412 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
413 | #endif |
82 | |
414 | |
83 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
415 | #if EV_USE_MONOTONIC |
84 | static void (*method_modify)(int fd, int oev, int nev); |
416 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
85 | static void (*method_poll)(ev_tstamp timeout); |
417 | #endif |
|
|
418 | |
|
|
419 | #ifdef _WIN32 |
|
|
420 | # include "ev_win32.c" |
|
|
421 | #endif |
86 | |
422 | |
87 | /*****************************************************************************/ |
423 | /*****************************************************************************/ |
88 | |
424 | |
|
|
425 | static void (*syserr_cb)(const char *msg); |
|
|
426 | |
|
|
427 | void |
|
|
428 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
429 | { |
|
|
430 | syserr_cb = cb; |
|
|
431 | } |
|
|
432 | |
|
|
433 | static void noinline |
|
|
434 | ev_syserr (const char *msg) |
|
|
435 | { |
|
|
436 | if (!msg) |
|
|
437 | msg = "(libev) system error"; |
|
|
438 | |
|
|
439 | if (syserr_cb) |
|
|
440 | syserr_cb (msg); |
|
|
441 | else |
|
|
442 | { |
|
|
443 | perror (msg); |
|
|
444 | abort (); |
|
|
445 | } |
|
|
446 | } |
|
|
447 | |
|
|
448 | static void * |
|
|
449 | ev_realloc_emul (void *ptr, long size) |
|
|
450 | { |
|
|
451 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
452 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
453 | * the single unix specification, so work around them here. |
|
|
454 | */ |
|
|
455 | |
|
|
456 | if (size) |
|
|
457 | return realloc (ptr, size); |
|
|
458 | |
|
|
459 | free (ptr); |
|
|
460 | return 0; |
|
|
461 | } |
|
|
462 | |
|
|
463 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
464 | |
|
|
465 | void |
|
|
466 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
467 | { |
|
|
468 | alloc = cb; |
|
|
469 | } |
|
|
470 | |
|
|
471 | inline_speed void * |
|
|
472 | ev_realloc (void *ptr, long size) |
|
|
473 | { |
|
|
474 | ptr = alloc (ptr, size); |
|
|
475 | |
|
|
476 | if (!ptr && size) |
|
|
477 | { |
|
|
478 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
479 | abort (); |
|
|
480 | } |
|
|
481 | |
|
|
482 | return ptr; |
|
|
483 | } |
|
|
484 | |
|
|
485 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
486 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
487 | |
|
|
488 | /*****************************************************************************/ |
|
|
489 | |
|
|
490 | /* file descriptor info structure */ |
|
|
491 | typedef struct |
|
|
492 | { |
|
|
493 | WL head; |
|
|
494 | unsigned char events; /* the events watched for */ |
|
|
495 | unsigned char reify; /* flag set when this ANFD needs reification */ |
|
|
496 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
497 | unsigned char unused; |
|
|
498 | #if EV_USE_EPOLL |
|
|
499 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
500 | #endif |
|
|
501 | #if EV_SELECT_IS_WINSOCKET |
|
|
502 | SOCKET handle; |
|
|
503 | #endif |
|
|
504 | } ANFD; |
|
|
505 | |
|
|
506 | /* stores the pending event set for a given watcher */ |
|
|
507 | typedef struct |
|
|
508 | { |
|
|
509 | W w; |
|
|
510 | int events; /* the pending event set for the given watcher */ |
|
|
511 | } ANPENDING; |
|
|
512 | |
|
|
513 | #if EV_USE_INOTIFY |
|
|
514 | /* hash table entry per inotify-id */ |
|
|
515 | typedef struct |
|
|
516 | { |
|
|
517 | WL head; |
|
|
518 | } ANFS; |
|
|
519 | #endif |
|
|
520 | |
|
|
521 | /* Heap Entry */ |
|
|
522 | #if EV_HEAP_CACHE_AT |
|
|
523 | /* a heap element */ |
|
|
524 | typedef struct { |
|
|
525 | ev_tstamp at; |
|
|
526 | WT w; |
|
|
527 | } ANHE; |
|
|
528 | |
|
|
529 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
530 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
531 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
532 | #else |
|
|
533 | /* a heap element */ |
|
|
534 | typedef WT ANHE; |
|
|
535 | |
|
|
536 | #define ANHE_w(he) (he) |
|
|
537 | #define ANHE_at(he) (he)->at |
|
|
538 | #define ANHE_at_cache(he) |
|
|
539 | #endif |
|
|
540 | |
|
|
541 | #if EV_MULTIPLICITY |
|
|
542 | |
|
|
543 | struct ev_loop |
|
|
544 | { |
|
|
545 | ev_tstamp ev_rt_now; |
|
|
546 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
547 | #define VAR(name,decl) decl; |
|
|
548 | #include "ev_vars.h" |
|
|
549 | #undef VAR |
|
|
550 | }; |
|
|
551 | #include "ev_wrap.h" |
|
|
552 | |
|
|
553 | static struct ev_loop default_loop_struct; |
|
|
554 | struct ev_loop *ev_default_loop_ptr; |
|
|
555 | |
|
|
556 | #else |
|
|
557 | |
|
|
558 | ev_tstamp ev_rt_now; |
|
|
559 | #define VAR(name,decl) static decl; |
|
|
560 | #include "ev_vars.h" |
|
|
561 | #undef VAR |
|
|
562 | |
|
|
563 | static int ev_default_loop_ptr; |
|
|
564 | |
|
|
565 | #endif |
|
|
566 | |
|
|
567 | /*****************************************************************************/ |
|
|
568 | |
|
|
569 | #ifndef EV_HAVE_EV_TIME |
89 | ev_tstamp |
570 | ev_tstamp |
90 | ev_time (void) |
571 | ev_time (void) |
91 | { |
572 | { |
92 | #if EV_USE_REALTIME |
573 | #if EV_USE_REALTIME |
|
|
574 | if (expect_true (have_realtime)) |
|
|
575 | { |
93 | struct timespec ts; |
576 | struct timespec ts; |
94 | clock_gettime (CLOCK_REALTIME, &ts); |
577 | clock_gettime (CLOCK_REALTIME, &ts); |
95 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
578 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
96 | #else |
579 | } |
|
|
580 | #endif |
|
|
581 | |
97 | struct timeval tv; |
582 | struct timeval tv; |
98 | gettimeofday (&tv, 0); |
583 | gettimeofday (&tv, 0); |
99 | return tv.tv_sec + tv.tv_usec * 1e-6; |
584 | return tv.tv_sec + tv.tv_usec * 1e-6; |
100 | #endif |
|
|
101 | } |
585 | } |
|
|
586 | #endif |
102 | |
587 | |
103 | static ev_tstamp |
588 | inline_size ev_tstamp |
104 | get_clock (void) |
589 | get_clock (void) |
105 | { |
590 | { |
106 | #if EV_USE_MONOTONIC |
591 | #if EV_USE_MONOTONIC |
107 | if (have_monotonic) |
592 | if (expect_true (have_monotonic)) |
108 | { |
593 | { |
109 | struct timespec ts; |
594 | struct timespec ts; |
110 | clock_gettime (CLOCK_MONOTONIC, &ts); |
595 | clock_gettime (CLOCK_MONOTONIC, &ts); |
111 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
596 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
112 | } |
597 | } |
113 | #endif |
598 | #endif |
114 | |
599 | |
115 | return ev_time (); |
600 | return ev_time (); |
116 | } |
601 | } |
117 | |
602 | |
118 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
603 | #if EV_MULTIPLICITY |
|
|
604 | ev_tstamp |
|
|
605 | ev_now (EV_P) |
|
|
606 | { |
|
|
607 | return ev_rt_now; |
|
|
608 | } |
|
|
609 | #endif |
119 | |
610 | |
120 | #define array_needsize(base,cur,cnt,init) \ |
611 | void |
121 | if ((cnt) > cur) \ |
612 | ev_sleep (ev_tstamp delay) |
122 | { \ |
613 | { |
123 | int newcnt = cur; \ |
614 | if (delay > 0.) |
124 | do \ |
|
|
125 | { \ |
|
|
126 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
127 | } \ |
|
|
128 | while ((cnt) > newcnt); \ |
|
|
129 | \ |
|
|
130 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
131 | init (base + cur, newcnt - cur); \ |
|
|
132 | cur = newcnt; \ |
|
|
133 | } |
615 | { |
|
|
616 | #if EV_USE_NANOSLEEP |
|
|
617 | struct timespec ts; |
|
|
618 | |
|
|
619 | ts.tv_sec = (time_t)delay; |
|
|
620 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
621 | |
|
|
622 | nanosleep (&ts, 0); |
|
|
623 | #elif defined(_WIN32) |
|
|
624 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
625 | #else |
|
|
626 | struct timeval tv; |
|
|
627 | |
|
|
628 | tv.tv_sec = (time_t)delay; |
|
|
629 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
630 | |
|
|
631 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
632 | /* somehting not guaranteed by newer posix versions, but guaranteed */ |
|
|
633 | /* by older ones */ |
|
|
634 | select (0, 0, 0, 0, &tv); |
|
|
635 | #endif |
|
|
636 | } |
|
|
637 | } |
134 | |
638 | |
135 | /*****************************************************************************/ |
639 | /*****************************************************************************/ |
136 | |
640 | |
137 | typedef struct |
641 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
138 | { |
|
|
139 | struct ev_io *head; |
|
|
140 | int events; |
|
|
141 | } ANFD; |
|
|
142 | |
642 | |
143 | static ANFD *anfds; |
643 | /* find a suitable new size for the given array, */ |
144 | static int anfdmax; |
644 | /* hopefully by rounding to a ncie-to-malloc size */ |
145 | |
645 | inline_size int |
146 | static void |
646 | array_nextsize (int elem, int cur, int cnt) |
147 | anfds_init (ANFD *base, int count) |
|
|
148 | { |
647 | { |
149 | while (count--) |
648 | int ncur = cur + 1; |
150 | { |
649 | |
151 | base->head = 0; |
650 | do |
152 | base->events = EV_NONE; |
651 | ncur <<= 1; |
153 | ++base; |
652 | while (cnt > ncur); |
|
|
653 | |
|
|
654 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
655 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
154 | } |
656 | { |
155 | } |
657 | ncur *= elem; |
|
|
658 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
659 | ncur = ncur - sizeof (void *) * 4; |
|
|
660 | ncur /= elem; |
|
|
661 | } |
156 | |
662 | |
157 | typedef struct |
663 | return ncur; |
158 | { |
664 | } |
159 | W w; |
|
|
160 | int events; |
|
|
161 | } ANPENDING; |
|
|
162 | |
665 | |
163 | static ANPENDING *pendings; |
666 | static noinline void * |
164 | static int pendingmax, pendingcnt; |
667 | array_realloc (int elem, void *base, int *cur, int cnt) |
165 | |
|
|
166 | static void |
|
|
167 | event (W w, int events) |
|
|
168 | { |
668 | { |
169 | w->pending = ++pendingcnt; |
669 | *cur = array_nextsize (elem, *cur, cnt); |
170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
670 | return ev_realloc (base, elem * *cur); |
171 | pendings [pendingcnt - 1].w = w; |
671 | } |
|
|
672 | |
|
|
673 | #define array_init_zero(base,count) \ |
|
|
674 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
675 | |
|
|
676 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
677 | if (expect_false ((cnt) > (cur))) \ |
|
|
678 | { \ |
|
|
679 | int ocur_ = (cur); \ |
|
|
680 | (base) = (type *)array_realloc \ |
|
|
681 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
682 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
683 | } |
|
|
684 | |
|
|
685 | #if 0 |
|
|
686 | #define array_slim(type,stem) \ |
|
|
687 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
688 | { \ |
|
|
689 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
690 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
691 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
692 | } |
|
|
693 | #endif |
|
|
694 | |
|
|
695 | #define array_free(stem, idx) \ |
|
|
696 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
697 | |
|
|
698 | /*****************************************************************************/ |
|
|
699 | |
|
|
700 | /* dummy callback for pending events */ |
|
|
701 | static void noinline |
|
|
702 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
703 | { |
|
|
704 | } |
|
|
705 | |
|
|
706 | void noinline |
|
|
707 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
708 | { |
|
|
709 | W w_ = (W)w; |
|
|
710 | int pri = ABSPRI (w_); |
|
|
711 | |
|
|
712 | if (expect_false (w_->pending)) |
172 | pendings [pendingcnt - 1].events = events; |
713 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
714 | else |
|
|
715 | { |
|
|
716 | w_->pending = ++pendingcnt [pri]; |
|
|
717 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
718 | pendings [pri][w_->pending - 1].w = w_; |
|
|
719 | pendings [pri][w_->pending - 1].events = revents; |
|
|
720 | } |
173 | } |
721 | } |
174 | |
722 | |
175 | static void |
723 | inline_speed void |
|
|
724 | feed_reverse (EV_P_ W w) |
|
|
725 | { |
|
|
726 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
727 | rfeeds [rfeedcnt++] = w; |
|
|
728 | } |
|
|
729 | |
|
|
730 | inline_size void |
|
|
731 | feed_reverse_done (EV_P_ int revents) |
|
|
732 | { |
|
|
733 | do |
|
|
734 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
735 | while (rfeedcnt); |
|
|
736 | } |
|
|
737 | |
|
|
738 | inline_speed void |
176 | queue_events (W *events, int eventcnt, int type) |
739 | queue_events (EV_P_ W *events, int eventcnt, int type) |
177 | { |
740 | { |
178 | int i; |
741 | int i; |
179 | |
742 | |
180 | for (i = 0; i < eventcnt; ++i) |
743 | for (i = 0; i < eventcnt; ++i) |
181 | event (events [i], type); |
744 | ev_feed_event (EV_A_ events [i], type); |
182 | } |
745 | } |
183 | |
746 | |
184 | static void |
747 | /*****************************************************************************/ |
|
|
748 | |
|
|
749 | inline_speed void |
185 | fd_event (int fd, int events) |
750 | fd_event (EV_P_ int fd, int revents) |
186 | { |
751 | { |
187 | ANFD *anfd = anfds + fd; |
752 | ANFD *anfd = anfds + fd; |
188 | struct ev_io *w; |
753 | ev_io *w; |
189 | |
754 | |
190 | for (w = anfd->head; w; w = w->next) |
755 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
191 | { |
756 | { |
192 | int ev = w->events & events; |
757 | int ev = w->events & revents; |
193 | |
758 | |
194 | if (ev) |
759 | if (ev) |
195 | event ((W)w, ev); |
760 | ev_feed_event (EV_A_ (W)w, ev); |
196 | } |
761 | } |
197 | } |
762 | } |
198 | |
763 | |
199 | /*****************************************************************************/ |
764 | void |
|
|
765 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
766 | { |
|
|
767 | if (fd >= 0 && fd < anfdmax) |
|
|
768 | fd_event (EV_A_ fd, revents); |
|
|
769 | } |
200 | |
770 | |
201 | static int *fdchanges; |
771 | /* make sure the external fd watch events are in-sync */ |
202 | static int fdchangemax, fdchangecnt; |
772 | /* with the kernel/libev internal state */ |
203 | |
773 | inline_size void |
204 | static void |
774 | fd_reify (EV_P) |
205 | fd_reify (void) |
|
|
206 | { |
775 | { |
207 | int i; |
776 | int i; |
208 | |
777 | |
209 | for (i = 0; i < fdchangecnt; ++i) |
778 | for (i = 0; i < fdchangecnt; ++i) |
210 | { |
779 | { |
211 | int fd = fdchanges [i]; |
780 | int fd = fdchanges [i]; |
212 | ANFD *anfd = anfds + fd; |
781 | ANFD *anfd = anfds + fd; |
213 | struct ev_io *w; |
782 | ev_io *w; |
214 | |
783 | |
215 | int events = 0; |
784 | unsigned char events = 0; |
216 | |
785 | |
217 | for (w = anfd->head; w; w = w->next) |
786 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
218 | events |= w->events; |
787 | events |= (unsigned char)w->events; |
219 | |
788 | |
220 | anfd->events &= ~EV_REIFY; |
789 | #if EV_SELECT_IS_WINSOCKET |
221 | |
790 | if (events) |
222 | if (anfd->events != events) |
|
|
223 | { |
791 | { |
224 | method_modify (fd, anfd->events, events); |
792 | unsigned long arg; |
225 | anfd->events = events; |
793 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
794 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
795 | #else |
|
|
796 | anfd->handle = _get_osfhandle (fd); |
|
|
797 | #endif |
|
|
798 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
226 | } |
799 | } |
|
|
800 | #endif |
|
|
801 | |
|
|
802 | { |
|
|
803 | unsigned char o_events = anfd->events; |
|
|
804 | unsigned char o_reify = anfd->reify; |
|
|
805 | |
|
|
806 | anfd->reify = 0; |
|
|
807 | anfd->events = events; |
|
|
808 | |
|
|
809 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
810 | backend_modify (EV_A_ fd, o_events, events); |
|
|
811 | } |
227 | } |
812 | } |
228 | |
813 | |
229 | fdchangecnt = 0; |
814 | fdchangecnt = 0; |
230 | } |
815 | } |
231 | |
816 | |
232 | static void |
817 | /* something about the given fd changed */ |
233 | fd_change (int fd) |
818 | inline_size void |
|
|
819 | fd_change (EV_P_ int fd, int flags) |
234 | { |
820 | { |
235 | if (anfds [fd].events & EV_REIFY || fdchangecnt < 0) |
821 | unsigned char reify = anfds [fd].reify; |
236 | return; |
822 | anfds [fd].reify |= flags; |
237 | |
823 | |
238 | anfds [fd].events |= EV_REIFY; |
824 | if (expect_true (!reify)) |
239 | |
825 | { |
240 | ++fdchangecnt; |
826 | ++fdchangecnt; |
241 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
827 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
242 | fdchanges [fdchangecnt - 1] = fd; |
828 | fdchanges [fdchangecnt - 1] = fd; |
|
|
829 | } |
|
|
830 | } |
|
|
831 | |
|
|
832 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
833 | inline_speed void |
|
|
834 | fd_kill (EV_P_ int fd) |
|
|
835 | { |
|
|
836 | ev_io *w; |
|
|
837 | |
|
|
838 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
839 | { |
|
|
840 | ev_io_stop (EV_A_ w); |
|
|
841 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
842 | } |
|
|
843 | } |
|
|
844 | |
|
|
845 | /* check whether the given fd is atcually valid, for error recovery */ |
|
|
846 | inline_size int |
|
|
847 | fd_valid (int fd) |
|
|
848 | { |
|
|
849 | #ifdef _WIN32 |
|
|
850 | return _get_osfhandle (fd) != -1; |
|
|
851 | #else |
|
|
852 | return fcntl (fd, F_GETFD) != -1; |
|
|
853 | #endif |
243 | } |
854 | } |
244 | |
855 | |
245 | /* called on EBADF to verify fds */ |
856 | /* called on EBADF to verify fds */ |
246 | static void |
857 | static void noinline |
247 | fd_recheck (void) |
858 | fd_ebadf (EV_P) |
248 | { |
859 | { |
249 | int fd; |
860 | int fd; |
250 | |
861 | |
251 | for (fd = 0; fd < anfdmax; ++fd) |
862 | for (fd = 0; fd < anfdmax; ++fd) |
252 | if (anfds [fd].events) |
863 | if (anfds [fd].events) |
253 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
864 | if (!fd_valid (fd) && errno == EBADF) |
254 | while (anfds [fd].head) |
865 | fd_kill (EV_A_ fd); |
|
|
866 | } |
|
|
867 | |
|
|
868 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
869 | static void noinline |
|
|
870 | fd_enomem (EV_P) |
|
|
871 | { |
|
|
872 | int fd; |
|
|
873 | |
|
|
874 | for (fd = anfdmax; fd--; ) |
|
|
875 | if (anfds [fd].events) |
255 | { |
876 | { |
256 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT); |
877 | fd_kill (EV_A_ fd); |
257 | ev_io_stop (anfds [fd].head); |
878 | return; |
258 | } |
879 | } |
|
|
880 | } |
|
|
881 | |
|
|
882 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
883 | static void noinline |
|
|
884 | fd_rearm_all (EV_P) |
|
|
885 | { |
|
|
886 | int fd; |
|
|
887 | |
|
|
888 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
889 | if (anfds [fd].events) |
|
|
890 | { |
|
|
891 | anfds [fd].events = 0; |
|
|
892 | anfds [fd].emask = 0; |
|
|
893 | fd_change (EV_A_ fd, EV__IOFDSET | 1); |
|
|
894 | } |
259 | } |
895 | } |
260 | |
896 | |
261 | /*****************************************************************************/ |
897 | /*****************************************************************************/ |
262 | |
898 | |
263 | static struct ev_timer **timers; |
899 | /* |
264 | static int timermax, timercnt; |
900 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
901 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
902 | * the branching factor of the d-tree. |
|
|
903 | */ |
265 | |
904 | |
266 | static struct ev_periodic **periodics; |
905 | /* |
267 | static int periodicmax, periodiccnt; |
906 | * at the moment we allow libev the luxury of two heaps, |
|
|
907 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
908 | * which is more cache-efficient. |
|
|
909 | * the difference is about 5% with 50000+ watchers. |
|
|
910 | */ |
|
|
911 | #if EV_USE_4HEAP |
268 | |
912 | |
269 | static void |
913 | #define DHEAP 4 |
270 | upheap (WT *timers, int k) |
914 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
271 | { |
915 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
272 | WT w = timers [k]; |
916 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
273 | |
917 | |
274 | while (k && timers [k >> 1]->at > w->at) |
918 | /* away from the root */ |
275 | { |
919 | inline_speed void |
276 | timers [k] = timers [k >> 1]; |
|
|
277 | timers [k]->active = k + 1; |
|
|
278 | k >>= 1; |
|
|
279 | } |
|
|
280 | |
|
|
281 | timers [k] = w; |
|
|
282 | timers [k]->active = k + 1; |
|
|
283 | |
|
|
284 | } |
|
|
285 | |
|
|
286 | static void |
|
|
287 | downheap (WT *timers, int N, int k) |
920 | downheap (ANHE *heap, int N, int k) |
288 | { |
921 | { |
289 | WT w = timers [k]; |
922 | ANHE he = heap [k]; |
|
|
923 | ANHE *E = heap + N + HEAP0; |
290 | |
924 | |
291 | while (k < (N >> 1)) |
925 | for (;;) |
292 | { |
926 | { |
293 | int j = k << 1; |
927 | ev_tstamp minat; |
|
|
928 | ANHE *minpos; |
|
|
929 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
294 | |
930 | |
295 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
931 | /* find minimum child */ |
|
|
932 | if (expect_true (pos + DHEAP - 1 < E)) |
296 | ++j; |
933 | { |
297 | |
934 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
298 | if (w->at <= timers [j]->at) |
935 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
936 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
937 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
938 | } |
|
|
939 | else if (pos < E) |
|
|
940 | { |
|
|
941 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
942 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
943 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
944 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
945 | } |
|
|
946 | else |
299 | break; |
947 | break; |
300 | |
948 | |
301 | timers [k] = timers [j]; |
949 | if (ANHE_at (he) <= minat) |
302 | timers [k]->active = k + 1; |
950 | break; |
|
|
951 | |
|
|
952 | heap [k] = *minpos; |
|
|
953 | ev_active (ANHE_w (*minpos)) = k; |
|
|
954 | |
|
|
955 | k = minpos - heap; |
|
|
956 | } |
|
|
957 | |
|
|
958 | heap [k] = he; |
|
|
959 | ev_active (ANHE_w (he)) = k; |
|
|
960 | } |
|
|
961 | |
|
|
962 | #else /* 4HEAP */ |
|
|
963 | |
|
|
964 | #define HEAP0 1 |
|
|
965 | #define HPARENT(k) ((k) >> 1) |
|
|
966 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
967 | |
|
|
968 | /* away from the root */ |
|
|
969 | inline_speed void |
|
|
970 | downheap (ANHE *heap, int N, int k) |
|
|
971 | { |
|
|
972 | ANHE he = heap [k]; |
|
|
973 | |
|
|
974 | for (;;) |
|
|
975 | { |
|
|
976 | int c = k << 1; |
|
|
977 | |
|
|
978 | if (c > N + HEAP0 - 1) |
|
|
979 | break; |
|
|
980 | |
|
|
981 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
982 | ? 1 : 0; |
|
|
983 | |
|
|
984 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
985 | break; |
|
|
986 | |
|
|
987 | heap [k] = heap [c]; |
|
|
988 | ev_active (ANHE_w (heap [k])) = k; |
|
|
989 | |
303 | k = j; |
990 | k = c; |
|
|
991 | } |
|
|
992 | |
|
|
993 | heap [k] = he; |
|
|
994 | ev_active (ANHE_w (he)) = k; |
|
|
995 | } |
|
|
996 | #endif |
|
|
997 | |
|
|
998 | /* towards the root */ |
|
|
999 | inline_speed void |
|
|
1000 | upheap (ANHE *heap, int k) |
|
|
1001 | { |
|
|
1002 | ANHE he = heap [k]; |
|
|
1003 | |
|
|
1004 | for (;;) |
304 | } |
1005 | { |
|
|
1006 | int p = HPARENT (k); |
305 | |
1007 | |
306 | timers [k] = w; |
1008 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
307 | timers [k]->active = k + 1; |
1009 | break; |
|
|
1010 | |
|
|
1011 | heap [k] = heap [p]; |
|
|
1012 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1013 | k = p; |
|
|
1014 | } |
|
|
1015 | |
|
|
1016 | heap [k] = he; |
|
|
1017 | ev_active (ANHE_w (he)) = k; |
|
|
1018 | } |
|
|
1019 | |
|
|
1020 | /* move an element suitably so it is in a correct place */ |
|
|
1021 | inline_size void |
|
|
1022 | adjustheap (ANHE *heap, int N, int k) |
|
|
1023 | { |
|
|
1024 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
|
|
1025 | upheap (heap, k); |
|
|
1026 | else |
|
|
1027 | downheap (heap, N, k); |
|
|
1028 | } |
|
|
1029 | |
|
|
1030 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1031 | inline_size void |
|
|
1032 | reheap (ANHE *heap, int N) |
|
|
1033 | { |
|
|
1034 | int i; |
|
|
1035 | |
|
|
1036 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1037 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1038 | for (i = 0; i < N; ++i) |
|
|
1039 | upheap (heap, i + HEAP0); |
308 | } |
1040 | } |
309 | |
1041 | |
310 | /*****************************************************************************/ |
1042 | /*****************************************************************************/ |
311 | |
1043 | |
|
|
1044 | /* associate signal watchers to a signal signal */ |
312 | typedef struct |
1045 | typedef struct |
313 | { |
1046 | { |
314 | struct ev_signal *head; |
1047 | WL head; |
315 | sig_atomic_t gotsig; |
1048 | EV_ATOMIC_T gotsig; |
316 | } ANSIG; |
1049 | } ANSIG; |
317 | |
1050 | |
318 | static ANSIG *signals; |
1051 | static ANSIG *signals; |
319 | static int signalmax; |
1052 | static int signalmax; |
320 | |
1053 | |
321 | static int sigpipe [2]; |
1054 | static EV_ATOMIC_T gotsig; |
322 | static sig_atomic_t gotsig; |
|
|
323 | static struct ev_io sigev; |
|
|
324 | |
1055 | |
|
|
1056 | /*****************************************************************************/ |
|
|
1057 | |
|
|
1058 | /* used to prepare libev internal fd's */ |
|
|
1059 | /* this is not fork-safe */ |
|
|
1060 | inline_speed void |
|
|
1061 | fd_intern (int fd) |
|
|
1062 | { |
|
|
1063 | #ifdef _WIN32 |
|
|
1064 | unsigned long arg = 1; |
|
|
1065 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
1066 | #else |
|
|
1067 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1068 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1069 | #endif |
|
|
1070 | } |
|
|
1071 | |
|
|
1072 | static void noinline |
|
|
1073 | evpipe_init (EV_P) |
|
|
1074 | { |
|
|
1075 | if (!ev_is_active (&pipe_w)) |
|
|
1076 | { |
|
|
1077 | #if EV_USE_EVENTFD |
|
|
1078 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
1079 | { |
|
|
1080 | evpipe [0] = -1; |
|
|
1081 | fd_intern (evfd); |
|
|
1082 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1083 | } |
|
|
1084 | else |
|
|
1085 | #endif |
|
|
1086 | { |
|
|
1087 | while (pipe (evpipe)) |
|
|
1088 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1089 | |
|
|
1090 | fd_intern (evpipe [0]); |
|
|
1091 | fd_intern (evpipe [1]); |
|
|
1092 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1093 | } |
|
|
1094 | |
|
|
1095 | ev_io_start (EV_A_ &pipe_w); |
|
|
1096 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1097 | } |
|
|
1098 | } |
|
|
1099 | |
|
|
1100 | inline_size void |
|
|
1101 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1102 | { |
|
|
1103 | if (!*flag) |
|
|
1104 | { |
|
|
1105 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1106 | |
|
|
1107 | *flag = 1; |
|
|
1108 | |
|
|
1109 | #if EV_USE_EVENTFD |
|
|
1110 | if (evfd >= 0) |
|
|
1111 | { |
|
|
1112 | uint64_t counter = 1; |
|
|
1113 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1114 | } |
|
|
1115 | else |
|
|
1116 | #endif |
|
|
1117 | write (evpipe [1], &old_errno, 1); |
|
|
1118 | |
|
|
1119 | errno = old_errno; |
|
|
1120 | } |
|
|
1121 | } |
|
|
1122 | |
|
|
1123 | /* called whenever the libev signal pipe */ |
|
|
1124 | /* got some events (signal, async) */ |
325 | static void |
1125 | static void |
326 | signals_init (ANSIG *base, int count) |
1126 | pipecb (EV_P_ ev_io *iow, int revents) |
327 | { |
1127 | { |
328 | while (count--) |
1128 | #if EV_USE_EVENTFD |
|
|
1129 | if (evfd >= 0) |
|
|
1130 | { |
|
|
1131 | uint64_t counter; |
|
|
1132 | read (evfd, &counter, sizeof (uint64_t)); |
329 | { |
1133 | } |
330 | base->head = 0; |
1134 | else |
|
|
1135 | #endif |
|
|
1136 | { |
|
|
1137 | char dummy; |
|
|
1138 | read (evpipe [0], &dummy, 1); |
|
|
1139 | } |
|
|
1140 | |
|
|
1141 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1142 | { |
|
|
1143 | int signum; |
331 | base->gotsig = 0; |
1144 | gotsig = 0; |
332 | ++base; |
1145 | |
|
|
1146 | for (signum = signalmax; signum--; ) |
|
|
1147 | if (signals [signum].gotsig) |
|
|
1148 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1149 | } |
|
|
1150 | |
|
|
1151 | #if EV_ASYNC_ENABLE |
|
|
1152 | if (gotasync) |
333 | } |
1153 | { |
|
|
1154 | int i; |
|
|
1155 | gotasync = 0; |
|
|
1156 | |
|
|
1157 | for (i = asynccnt; i--; ) |
|
|
1158 | if (asyncs [i]->sent) |
|
|
1159 | { |
|
|
1160 | asyncs [i]->sent = 0; |
|
|
1161 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1162 | } |
|
|
1163 | } |
|
|
1164 | #endif |
334 | } |
1165 | } |
|
|
1166 | |
|
|
1167 | /*****************************************************************************/ |
335 | |
1168 | |
336 | static void |
1169 | static void |
337 | sighandler (int signum) |
1170 | ev_sighandler (int signum) |
338 | { |
1171 | { |
|
|
1172 | #if EV_MULTIPLICITY |
|
|
1173 | struct ev_loop *loop = &default_loop_struct; |
|
|
1174 | #endif |
|
|
1175 | |
|
|
1176 | #if _WIN32 |
|
|
1177 | signal (signum, ev_sighandler); |
|
|
1178 | #endif |
|
|
1179 | |
339 | signals [signum - 1].gotsig = 1; |
1180 | signals [signum - 1].gotsig = 1; |
340 | |
1181 | evpipe_write (EV_A_ &gotsig); |
341 | if (!gotsig) |
|
|
342 | { |
|
|
343 | gotsig = 1; |
|
|
344 | write (sigpipe [1], &gotsig, 1); |
|
|
345 | } |
|
|
346 | } |
1182 | } |
347 | |
1183 | |
348 | static void |
1184 | void noinline |
349 | sigcb (struct ev_io *iow, int revents) |
1185 | ev_feed_signal_event (EV_P_ int signum) |
350 | { |
1186 | { |
351 | struct ev_signal *w; |
1187 | WL w; |
352 | int sig; |
|
|
353 | |
1188 | |
354 | gotsig = 0; |
1189 | #if EV_MULTIPLICITY |
355 | read (sigpipe [0], &revents, 1); |
1190 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1191 | #endif |
356 | |
1192 | |
357 | for (sig = signalmax; sig--; ) |
1193 | --signum; |
358 | if (signals [sig].gotsig) |
1194 | |
359 | { |
1195 | if (signum < 0 || signum >= signalmax) |
|
|
1196 | return; |
|
|
1197 | |
360 | signals [sig].gotsig = 0; |
1198 | signals [signum].gotsig = 0; |
361 | |
1199 | |
362 | for (w = signals [sig].head; w; w = w->next) |
1200 | for (w = signals [signum].head; w; w = w->next) |
363 | event ((W)w, EV_SIGNAL); |
1201 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
364 | } |
|
|
365 | } |
|
|
366 | |
|
|
367 | static void |
|
|
368 | siginit (void) |
|
|
369 | { |
|
|
370 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
371 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
372 | |
|
|
373 | /* rather than sort out wether we really need nb, set it */ |
|
|
374 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
375 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
376 | |
|
|
377 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
378 | ev_io_start (&sigev); |
|
|
379 | } |
1202 | } |
380 | |
1203 | |
381 | /*****************************************************************************/ |
1204 | /*****************************************************************************/ |
382 | |
1205 | |
383 | static struct ev_idle **idles; |
1206 | static WL childs [EV_PID_HASHSIZE]; |
384 | static int idlemax, idlecnt; |
|
|
385 | |
1207 | |
386 | static struct ev_prepare **prepares; |
1208 | #ifndef _WIN32 |
387 | static int preparemax, preparecnt; |
|
|
388 | |
1209 | |
389 | static struct ev_check **checks; |
|
|
390 | static int checkmax, checkcnt; |
|
|
391 | |
|
|
392 | /*****************************************************************************/ |
|
|
393 | |
|
|
394 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
395 | static struct ev_signal childev; |
1210 | static ev_signal childev; |
|
|
1211 | |
|
|
1212 | #ifndef WIFCONTINUED |
|
|
1213 | # define WIFCONTINUED(status) 0 |
|
|
1214 | #endif |
|
|
1215 | |
|
|
1216 | /* handle a single child status event */ |
|
|
1217 | inline_speed void |
|
|
1218 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1219 | { |
|
|
1220 | ev_child *w; |
|
|
1221 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1222 | |
|
|
1223 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1224 | { |
|
|
1225 | if ((w->pid == pid || !w->pid) |
|
|
1226 | && (!traced || (w->flags & 1))) |
|
|
1227 | { |
|
|
1228 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1229 | w->rpid = pid; |
|
|
1230 | w->rstatus = status; |
|
|
1231 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1232 | } |
|
|
1233 | } |
|
|
1234 | } |
396 | |
1235 | |
397 | #ifndef WCONTINUED |
1236 | #ifndef WCONTINUED |
398 | # define WCONTINUED 0 |
1237 | # define WCONTINUED 0 |
399 | #endif |
1238 | #endif |
400 | |
1239 | |
|
|
1240 | /* called on sigchld etc., calls waitpid */ |
401 | static void |
1241 | static void |
402 | childcb (struct ev_signal *sw, int revents) |
1242 | childcb (EV_P_ ev_signal *sw, int revents) |
403 | { |
1243 | { |
404 | struct ev_child *w; |
|
|
405 | int pid, status; |
1244 | int pid, status; |
406 | |
1245 | |
|
|
1246 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
407 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
1247 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
408 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
1248 | if (!WCONTINUED |
409 | if (w->pid == pid || w->pid == -1) |
1249 | || errno != EINVAL |
410 | { |
1250 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
411 | w->status = status; |
1251 | return; |
412 | event ((W)w, EV_CHILD); |
1252 | |
413 | } |
1253 | /* make sure we are called again until all children have been reaped */ |
|
|
1254 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1255 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1256 | |
|
|
1257 | child_reap (EV_A_ pid, pid, status); |
|
|
1258 | if (EV_PID_HASHSIZE > 1) |
|
|
1259 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
414 | } |
1260 | } |
|
|
1261 | |
|
|
1262 | #endif |
415 | |
1263 | |
416 | /*****************************************************************************/ |
1264 | /*****************************************************************************/ |
417 | |
1265 | |
|
|
1266 | #if EV_USE_PORT |
|
|
1267 | # include "ev_port.c" |
|
|
1268 | #endif |
|
|
1269 | #if EV_USE_KQUEUE |
|
|
1270 | # include "ev_kqueue.c" |
|
|
1271 | #endif |
418 | #if EV_USE_EPOLL |
1272 | #if EV_USE_EPOLL |
419 | # include "ev_epoll.c" |
1273 | # include "ev_epoll.c" |
420 | #endif |
1274 | #endif |
|
|
1275 | #if EV_USE_POLL |
|
|
1276 | # include "ev_poll.c" |
|
|
1277 | #endif |
421 | #if EV_USE_SELECT |
1278 | #if EV_USE_SELECT |
422 | # include "ev_select.c" |
1279 | # include "ev_select.c" |
423 | #endif |
1280 | #endif |
424 | |
1281 | |
425 | int |
1282 | int |
… | |
… | |
432 | ev_version_minor (void) |
1289 | ev_version_minor (void) |
433 | { |
1290 | { |
434 | return EV_VERSION_MINOR; |
1291 | return EV_VERSION_MINOR; |
435 | } |
1292 | } |
436 | |
1293 | |
437 | int ev_init (int flags) |
1294 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1295 | int inline_size |
|
|
1296 | enable_secure (void) |
438 | { |
1297 | { |
439 | if (!ev_method) |
1298 | #ifdef _WIN32 |
|
|
1299 | return 0; |
|
|
1300 | #else |
|
|
1301 | return getuid () != geteuid () |
|
|
1302 | || getgid () != getegid (); |
|
|
1303 | #endif |
|
|
1304 | } |
|
|
1305 | |
|
|
1306 | unsigned int |
|
|
1307 | ev_supported_backends (void) |
|
|
1308 | { |
|
|
1309 | unsigned int flags = 0; |
|
|
1310 | |
|
|
1311 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1312 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1313 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1314 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1315 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1316 | |
|
|
1317 | return flags; |
|
|
1318 | } |
|
|
1319 | |
|
|
1320 | unsigned int |
|
|
1321 | ev_recommended_backends (void) |
|
|
1322 | { |
|
|
1323 | unsigned int flags = ev_supported_backends (); |
|
|
1324 | |
|
|
1325 | #ifndef __NetBSD__ |
|
|
1326 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1327 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1328 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1329 | #endif |
|
|
1330 | #ifdef __APPLE__ |
|
|
1331 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1332 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1333 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1334 | #endif |
|
|
1335 | |
|
|
1336 | return flags; |
|
|
1337 | } |
|
|
1338 | |
|
|
1339 | unsigned int |
|
|
1340 | ev_embeddable_backends (void) |
|
|
1341 | { |
|
|
1342 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1343 | |
|
|
1344 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1345 | /* please fix it and tell me how to detect the fix */ |
|
|
1346 | flags &= ~EVBACKEND_EPOLL; |
|
|
1347 | |
|
|
1348 | return flags; |
|
|
1349 | } |
|
|
1350 | |
|
|
1351 | unsigned int |
|
|
1352 | ev_backend (EV_P) |
|
|
1353 | { |
|
|
1354 | return backend; |
|
|
1355 | } |
|
|
1356 | |
|
|
1357 | unsigned int |
|
|
1358 | ev_loop_count (EV_P) |
|
|
1359 | { |
|
|
1360 | return loop_count; |
|
|
1361 | } |
|
|
1362 | |
|
|
1363 | unsigned int |
|
|
1364 | ev_loop_depth (EV_P) |
|
|
1365 | { |
|
|
1366 | return loop_depth; |
|
|
1367 | } |
|
|
1368 | |
|
|
1369 | void |
|
|
1370 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1371 | { |
|
|
1372 | io_blocktime = interval; |
|
|
1373 | } |
|
|
1374 | |
|
|
1375 | void |
|
|
1376 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1377 | { |
|
|
1378 | timeout_blocktime = interval; |
|
|
1379 | } |
|
|
1380 | |
|
|
1381 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1382 | static void noinline |
|
|
1383 | loop_init (EV_P_ unsigned int flags) |
|
|
1384 | { |
|
|
1385 | if (!backend) |
440 | { |
1386 | { |
|
|
1387 | #if EV_USE_REALTIME |
|
|
1388 | if (!have_realtime) |
|
|
1389 | { |
|
|
1390 | struct timespec ts; |
|
|
1391 | |
|
|
1392 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1393 | have_realtime = 1; |
|
|
1394 | } |
|
|
1395 | #endif |
|
|
1396 | |
441 | #if EV_USE_MONOTONIC |
1397 | #if EV_USE_MONOTONIC |
|
|
1398 | if (!have_monotonic) |
|
|
1399 | { |
|
|
1400 | struct timespec ts; |
|
|
1401 | |
|
|
1402 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1403 | have_monotonic = 1; |
|
|
1404 | } |
|
|
1405 | #endif |
|
|
1406 | |
|
|
1407 | ev_rt_now = ev_time (); |
|
|
1408 | mn_now = get_clock (); |
|
|
1409 | now_floor = mn_now; |
|
|
1410 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1411 | |
|
|
1412 | io_blocktime = 0.; |
|
|
1413 | timeout_blocktime = 0.; |
|
|
1414 | backend = 0; |
|
|
1415 | backend_fd = -1; |
|
|
1416 | gotasync = 0; |
|
|
1417 | #if EV_USE_INOTIFY |
|
|
1418 | fs_fd = -2; |
|
|
1419 | #endif |
|
|
1420 | |
|
|
1421 | /* pid check not overridable via env */ |
|
|
1422 | #ifndef _WIN32 |
|
|
1423 | if (flags & EVFLAG_FORKCHECK) |
|
|
1424 | curpid = getpid (); |
|
|
1425 | #endif |
|
|
1426 | |
|
|
1427 | if (!(flags & EVFLAG_NOENV) |
|
|
1428 | && !enable_secure () |
|
|
1429 | && getenv ("LIBEV_FLAGS")) |
|
|
1430 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1431 | |
|
|
1432 | if (!(flags & 0x0000ffffU)) |
|
|
1433 | flags |= ev_recommended_backends (); |
|
|
1434 | |
|
|
1435 | #if EV_USE_PORT |
|
|
1436 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1437 | #endif |
|
|
1438 | #if EV_USE_KQUEUE |
|
|
1439 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1440 | #endif |
|
|
1441 | #if EV_USE_EPOLL |
|
|
1442 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1443 | #endif |
|
|
1444 | #if EV_USE_POLL |
|
|
1445 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1446 | #endif |
|
|
1447 | #if EV_USE_SELECT |
|
|
1448 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1449 | #endif |
|
|
1450 | |
|
|
1451 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1452 | |
|
|
1453 | ev_init (&pipe_w, pipecb); |
|
|
1454 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1455 | } |
|
|
1456 | } |
|
|
1457 | |
|
|
1458 | /* free up a loop structure */ |
|
|
1459 | static void noinline |
|
|
1460 | loop_destroy (EV_P) |
|
|
1461 | { |
|
|
1462 | int i; |
|
|
1463 | |
|
|
1464 | if (ev_is_active (&pipe_w)) |
|
|
1465 | { |
|
|
1466 | ev_ref (EV_A); /* signal watcher */ |
|
|
1467 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1468 | |
|
|
1469 | #if EV_USE_EVENTFD |
|
|
1470 | if (evfd >= 0) |
|
|
1471 | close (evfd); |
|
|
1472 | #endif |
|
|
1473 | |
|
|
1474 | if (evpipe [0] >= 0) |
|
|
1475 | { |
|
|
1476 | close (evpipe [0]); |
|
|
1477 | close (evpipe [1]); |
|
|
1478 | } |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | #if EV_USE_INOTIFY |
|
|
1482 | if (fs_fd >= 0) |
|
|
1483 | close (fs_fd); |
|
|
1484 | #endif |
|
|
1485 | |
|
|
1486 | if (backend_fd >= 0) |
|
|
1487 | close (backend_fd); |
|
|
1488 | |
|
|
1489 | #if EV_USE_PORT |
|
|
1490 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1491 | #endif |
|
|
1492 | #if EV_USE_KQUEUE |
|
|
1493 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1494 | #endif |
|
|
1495 | #if EV_USE_EPOLL |
|
|
1496 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1497 | #endif |
|
|
1498 | #if EV_USE_POLL |
|
|
1499 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1500 | #endif |
|
|
1501 | #if EV_USE_SELECT |
|
|
1502 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1503 | #endif |
|
|
1504 | |
|
|
1505 | for (i = NUMPRI; i--; ) |
|
|
1506 | { |
|
|
1507 | array_free (pending, [i]); |
|
|
1508 | #if EV_IDLE_ENABLE |
|
|
1509 | array_free (idle, [i]); |
|
|
1510 | #endif |
|
|
1511 | } |
|
|
1512 | |
|
|
1513 | ev_free (anfds); anfdmax = 0; |
|
|
1514 | |
|
|
1515 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1516 | array_free (rfeed, EMPTY); |
|
|
1517 | array_free (fdchange, EMPTY); |
|
|
1518 | array_free (timer, EMPTY); |
|
|
1519 | #if EV_PERIODIC_ENABLE |
|
|
1520 | array_free (periodic, EMPTY); |
|
|
1521 | #endif |
|
|
1522 | #if EV_FORK_ENABLE |
|
|
1523 | array_free (fork, EMPTY); |
|
|
1524 | #endif |
|
|
1525 | array_free (prepare, EMPTY); |
|
|
1526 | array_free (check, EMPTY); |
|
|
1527 | #if EV_ASYNC_ENABLE |
|
|
1528 | array_free (async, EMPTY); |
|
|
1529 | #endif |
|
|
1530 | |
|
|
1531 | backend = 0; |
|
|
1532 | } |
|
|
1533 | |
|
|
1534 | #if EV_USE_INOTIFY |
|
|
1535 | inline_size void infy_fork (EV_P); |
|
|
1536 | #endif |
|
|
1537 | |
|
|
1538 | inline_size void |
|
|
1539 | loop_fork (EV_P) |
|
|
1540 | { |
|
|
1541 | #if EV_USE_PORT |
|
|
1542 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1543 | #endif |
|
|
1544 | #if EV_USE_KQUEUE |
|
|
1545 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1546 | #endif |
|
|
1547 | #if EV_USE_EPOLL |
|
|
1548 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1549 | #endif |
|
|
1550 | #if EV_USE_INOTIFY |
|
|
1551 | infy_fork (EV_A); |
|
|
1552 | #endif |
|
|
1553 | |
|
|
1554 | if (ev_is_active (&pipe_w)) |
|
|
1555 | { |
|
|
1556 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1557 | /* while we modify the fd vars */ |
|
|
1558 | gotsig = 1; |
|
|
1559 | #if EV_ASYNC_ENABLE |
|
|
1560 | gotasync = 1; |
|
|
1561 | #endif |
|
|
1562 | |
|
|
1563 | ev_ref (EV_A); |
|
|
1564 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1565 | |
|
|
1566 | #if EV_USE_EVENTFD |
|
|
1567 | if (evfd >= 0) |
|
|
1568 | close (evfd); |
|
|
1569 | #endif |
|
|
1570 | |
|
|
1571 | if (evpipe [0] >= 0) |
|
|
1572 | { |
|
|
1573 | close (evpipe [0]); |
|
|
1574 | close (evpipe [1]); |
|
|
1575 | } |
|
|
1576 | |
|
|
1577 | evpipe_init (EV_A); |
|
|
1578 | /* now iterate over everything, in case we missed something */ |
|
|
1579 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
1580 | } |
|
|
1581 | |
|
|
1582 | postfork = 0; |
|
|
1583 | } |
|
|
1584 | |
|
|
1585 | #if EV_MULTIPLICITY |
|
|
1586 | |
|
|
1587 | struct ev_loop * |
|
|
1588 | ev_loop_new (unsigned int flags) |
|
|
1589 | { |
|
|
1590 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1591 | |
|
|
1592 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1593 | |
|
|
1594 | loop_init (EV_A_ flags); |
|
|
1595 | |
|
|
1596 | if (ev_backend (EV_A)) |
|
|
1597 | return loop; |
|
|
1598 | |
|
|
1599 | return 0; |
|
|
1600 | } |
|
|
1601 | |
|
|
1602 | void |
|
|
1603 | ev_loop_destroy (EV_P) |
|
|
1604 | { |
|
|
1605 | loop_destroy (EV_A); |
|
|
1606 | ev_free (loop); |
|
|
1607 | } |
|
|
1608 | |
|
|
1609 | void |
|
|
1610 | ev_loop_fork (EV_P) |
|
|
1611 | { |
|
|
1612 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1613 | } |
|
|
1614 | |
|
|
1615 | #if EV_VERIFY |
|
|
1616 | static void noinline |
|
|
1617 | verify_watcher (EV_P_ W w) |
|
|
1618 | { |
|
|
1619 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1620 | |
|
|
1621 | if (w->pending) |
|
|
1622 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1623 | } |
|
|
1624 | |
|
|
1625 | static void noinline |
|
|
1626 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1627 | { |
|
|
1628 | int i; |
|
|
1629 | |
|
|
1630 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1631 | { |
|
|
1632 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1633 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1634 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1635 | |
|
|
1636 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1637 | } |
|
|
1638 | } |
|
|
1639 | |
|
|
1640 | static void noinline |
|
|
1641 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1642 | { |
|
|
1643 | while (cnt--) |
|
|
1644 | { |
|
|
1645 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1646 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1647 | } |
|
|
1648 | } |
|
|
1649 | #endif |
|
|
1650 | |
|
|
1651 | void |
|
|
1652 | ev_loop_verify (EV_P) |
|
|
1653 | { |
|
|
1654 | #if EV_VERIFY |
|
|
1655 | int i; |
|
|
1656 | WL w; |
|
|
1657 | |
|
|
1658 | assert (activecnt >= -1); |
|
|
1659 | |
|
|
1660 | assert (fdchangemax >= fdchangecnt); |
|
|
1661 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1662 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1663 | |
|
|
1664 | assert (anfdmax >= 0); |
|
|
1665 | for (i = 0; i < anfdmax; ++i) |
|
|
1666 | for (w = anfds [i].head; w; w = w->next) |
442 | { |
1667 | { |
443 | struct timespec ts; |
1668 | verify_watcher (EV_A_ (W)w); |
444 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1669 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
445 | have_monotonic = 1; |
1670 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
446 | } |
1671 | } |
|
|
1672 | |
|
|
1673 | assert (timermax >= timercnt); |
|
|
1674 | verify_heap (EV_A_ timers, timercnt); |
|
|
1675 | |
|
|
1676 | #if EV_PERIODIC_ENABLE |
|
|
1677 | assert (periodicmax >= periodiccnt); |
|
|
1678 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1679 | #endif |
|
|
1680 | |
|
|
1681 | for (i = NUMPRI; i--; ) |
|
|
1682 | { |
|
|
1683 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1684 | #if EV_IDLE_ENABLE |
|
|
1685 | assert (idleall >= 0); |
|
|
1686 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1687 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1688 | #endif |
|
|
1689 | } |
|
|
1690 | |
|
|
1691 | #if EV_FORK_ENABLE |
|
|
1692 | assert (forkmax >= forkcnt); |
|
|
1693 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1694 | #endif |
|
|
1695 | |
|
|
1696 | #if EV_ASYNC_ENABLE |
|
|
1697 | assert (asyncmax >= asynccnt); |
|
|
1698 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1699 | #endif |
|
|
1700 | |
|
|
1701 | assert (preparemax >= preparecnt); |
|
|
1702 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1703 | |
|
|
1704 | assert (checkmax >= checkcnt); |
|
|
1705 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1706 | |
|
|
1707 | # if 0 |
|
|
1708 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1709 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
447 | #endif |
1710 | # endif |
448 | |
|
|
449 | ev_now = ev_time (); |
|
|
450 | now = get_clock (); |
|
|
451 | diff = ev_now - now; |
|
|
452 | |
|
|
453 | if (pipe (sigpipe)) |
|
|
454 | return 0; |
|
|
455 | |
|
|
456 | ev_method = EVMETHOD_NONE; |
|
|
457 | #if EV_USE_EPOLL |
|
|
458 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
459 | #endif |
1711 | #endif |
460 | #if EV_USE_SELECT |
1712 | } |
461 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
462 | #endif |
|
|
463 | |
1713 | |
464 | if (ev_method) |
1714 | #endif /* multiplicity */ |
|
|
1715 | |
|
|
1716 | #if EV_MULTIPLICITY |
|
|
1717 | struct ev_loop * |
|
|
1718 | ev_default_loop_init (unsigned int flags) |
|
|
1719 | #else |
|
|
1720 | int |
|
|
1721 | ev_default_loop (unsigned int flags) |
|
|
1722 | #endif |
|
|
1723 | { |
|
|
1724 | if (!ev_default_loop_ptr) |
|
|
1725 | { |
|
|
1726 | #if EV_MULTIPLICITY |
|
|
1727 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1728 | #else |
|
|
1729 | ev_default_loop_ptr = 1; |
|
|
1730 | #endif |
|
|
1731 | |
|
|
1732 | loop_init (EV_A_ flags); |
|
|
1733 | |
|
|
1734 | if (ev_backend (EV_A)) |
465 | { |
1735 | { |
466 | ev_watcher_init (&sigev, sigcb); |
1736 | #ifndef _WIN32 |
467 | siginit (); |
|
|
468 | |
|
|
469 | ev_signal_init (&childev, childcb, SIGCHLD); |
1737 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1738 | ev_set_priority (&childev, EV_MAXPRI); |
470 | ev_signal_start (&childev); |
1739 | ev_signal_start (EV_A_ &childev); |
471 | } |
1740 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
472 | } |
|
|
473 | |
|
|
474 | return ev_method; |
|
|
475 | } |
|
|
476 | |
|
|
477 | /*****************************************************************************/ |
|
|
478 | |
|
|
479 | void |
|
|
480 | ev_prefork (void) |
|
|
481 | { |
|
|
482 | /* nop */ |
|
|
483 | } |
|
|
484 | |
|
|
485 | void |
|
|
486 | ev_postfork_parent (void) |
|
|
487 | { |
|
|
488 | /* nop */ |
|
|
489 | } |
|
|
490 | |
|
|
491 | void |
|
|
492 | ev_postfork_child (void) |
|
|
493 | { |
|
|
494 | #if EV_USE_EPOLL |
|
|
495 | if (ev_method == EVMETHOD_EPOLL) |
|
|
496 | epoll_postfork_child (); |
|
|
497 | #endif |
1741 | #endif |
498 | |
|
|
499 | ev_io_stop (&sigev); |
|
|
500 | close (sigpipe [0]); |
|
|
501 | close (sigpipe [1]); |
|
|
502 | pipe (sigpipe); |
|
|
503 | siginit (); |
|
|
504 | } |
|
|
505 | |
|
|
506 | /*****************************************************************************/ |
|
|
507 | |
|
|
508 | static void |
|
|
509 | call_pending (void) |
|
|
510 | { |
|
|
511 | while (pendingcnt) |
|
|
512 | { |
|
|
513 | ANPENDING *p = pendings + --pendingcnt; |
|
|
514 | |
|
|
515 | if (p->w) |
|
|
516 | { |
|
|
517 | p->w->pending = 0; |
|
|
518 | p->w->cb (p->w, p->events); |
|
|
519 | } |
|
|
520 | } |
|
|
521 | } |
|
|
522 | |
|
|
523 | static void |
|
|
524 | timers_reify (void) |
|
|
525 | { |
|
|
526 | while (timercnt && timers [0]->at <= now) |
|
|
527 | { |
|
|
528 | struct ev_timer *w = timers [0]; |
|
|
529 | |
|
|
530 | /* first reschedule or stop timer */ |
|
|
531 | if (w->repeat) |
|
|
532 | { |
|
|
533 | w->at = now + w->repeat; |
|
|
534 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
535 | downheap ((WT *)timers, timercnt, 0); |
|
|
536 | } |
1742 | } |
537 | else |
1743 | else |
538 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1744 | ev_default_loop_ptr = 0; |
539 | |
|
|
540 | event ((W)w, EV_TIMEOUT); |
|
|
541 | } |
1745 | } |
542 | } |
|
|
543 | |
1746 | |
544 | static void |
1747 | return ev_default_loop_ptr; |
545 | periodics_reify (void) |
1748 | } |
|
|
1749 | |
|
|
1750 | void |
|
|
1751 | ev_default_destroy (void) |
546 | { |
1752 | { |
547 | while (periodiccnt && periodics [0]->at <= ev_now) |
1753 | #if EV_MULTIPLICITY |
|
|
1754 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1755 | #endif |
|
|
1756 | |
|
|
1757 | ev_default_loop_ptr = 0; |
|
|
1758 | |
|
|
1759 | #ifndef _WIN32 |
|
|
1760 | ev_ref (EV_A); /* child watcher */ |
|
|
1761 | ev_signal_stop (EV_A_ &childev); |
|
|
1762 | #endif |
|
|
1763 | |
|
|
1764 | loop_destroy (EV_A); |
|
|
1765 | } |
|
|
1766 | |
|
|
1767 | void |
|
|
1768 | ev_default_fork (void) |
|
|
1769 | { |
|
|
1770 | #if EV_MULTIPLICITY |
|
|
1771 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1772 | #endif |
|
|
1773 | |
|
|
1774 | postfork = 1; /* must be in line with ev_loop_fork */ |
|
|
1775 | } |
|
|
1776 | |
|
|
1777 | /*****************************************************************************/ |
|
|
1778 | |
|
|
1779 | void |
|
|
1780 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1781 | { |
|
|
1782 | EV_CB_INVOKE ((W)w, revents); |
|
|
1783 | } |
|
|
1784 | |
|
|
1785 | inline_speed void |
|
|
1786 | call_pending (EV_P) |
|
|
1787 | { |
|
|
1788 | int pri; |
|
|
1789 | |
|
|
1790 | for (pri = NUMPRI; pri--; ) |
|
|
1791 | while (pendingcnt [pri]) |
548 | { |
1792 | { |
549 | struct ev_periodic *w = periodics [0]; |
1793 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
550 | |
1794 | |
551 | /* first reschedule or stop timer */ |
1795 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
552 | if (w->interval) |
1796 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
1797 | |
|
|
1798 | p->w->pending = 0; |
|
|
1799 | EV_CB_INVOKE (p->w, p->events); |
|
|
1800 | EV_FREQUENT_CHECK; |
|
|
1801 | } |
|
|
1802 | } |
|
|
1803 | |
|
|
1804 | #if EV_IDLE_ENABLE |
|
|
1805 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
1806 | /* only when higher priorities are idle" logic */ |
|
|
1807 | inline_size void |
|
|
1808 | idle_reify (EV_P) |
|
|
1809 | { |
|
|
1810 | if (expect_false (idleall)) |
|
|
1811 | { |
|
|
1812 | int pri; |
|
|
1813 | |
|
|
1814 | for (pri = NUMPRI; pri--; ) |
553 | { |
1815 | { |
554 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1816 | if (pendingcnt [pri]) |
555 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1817 | break; |
556 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
557 | } |
|
|
558 | else |
|
|
559 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
|
|
560 | |
1818 | |
561 | event ((W)w, EV_TIMEOUT); |
1819 | if (idlecnt [pri]) |
562 | } |
|
|
563 | } |
|
|
564 | |
|
|
565 | static void |
|
|
566 | periodics_reschedule (ev_tstamp diff) |
|
|
567 | { |
|
|
568 | int i; |
|
|
569 | |
|
|
570 | /* adjust periodics after time jump */ |
|
|
571 | for (i = 0; i < periodiccnt; ++i) |
|
|
572 | { |
|
|
573 | struct ev_periodic *w = periodics [i]; |
|
|
574 | |
|
|
575 | if (w->interval) |
|
|
576 | { |
|
|
577 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
578 | |
|
|
579 | if (fabs (diff) >= 1e-4) |
|
|
580 | { |
1820 | { |
581 | ev_periodic_stop (w); |
1821 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
582 | ev_periodic_start (w); |
1822 | break; |
583 | |
|
|
584 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
585 | } |
1823 | } |
586 | } |
1824 | } |
587 | } |
1825 | } |
588 | } |
1826 | } |
|
|
1827 | #endif |
589 | |
1828 | |
590 | static void |
1829 | /* make timers pending */ |
591 | time_update (void) |
1830 | inline_size void |
|
|
1831 | timers_reify (EV_P) |
|
|
1832 | { |
|
|
1833 | EV_FREQUENT_CHECK; |
|
|
1834 | |
|
|
1835 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
1836 | { |
|
|
1837 | do |
|
|
1838 | { |
|
|
1839 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1840 | |
|
|
1841 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1842 | |
|
|
1843 | /* first reschedule or stop timer */ |
|
|
1844 | if (w->repeat) |
|
|
1845 | { |
|
|
1846 | ev_at (w) += w->repeat; |
|
|
1847 | if (ev_at (w) < mn_now) |
|
|
1848 | ev_at (w) = mn_now; |
|
|
1849 | |
|
|
1850 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1851 | |
|
|
1852 | ANHE_at_cache (timers [HEAP0]); |
|
|
1853 | downheap (timers, timercnt, HEAP0); |
|
|
1854 | } |
|
|
1855 | else |
|
|
1856 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1857 | |
|
|
1858 | EV_FREQUENT_CHECK; |
|
|
1859 | feed_reverse (EV_A_ (W)w); |
|
|
1860 | } |
|
|
1861 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
1862 | |
|
|
1863 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
|
|
1864 | } |
|
|
1865 | } |
|
|
1866 | |
|
|
1867 | #if EV_PERIODIC_ENABLE |
|
|
1868 | /* make periodics pending */ |
|
|
1869 | inline_size void |
|
|
1870 | periodics_reify (EV_P) |
|
|
1871 | { |
|
|
1872 | EV_FREQUENT_CHECK; |
|
|
1873 | |
|
|
1874 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
1875 | { |
|
|
1876 | int feed_count = 0; |
|
|
1877 | |
|
|
1878 | do |
|
|
1879 | { |
|
|
1880 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1881 | |
|
|
1882 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1883 | |
|
|
1884 | /* first reschedule or stop timer */ |
|
|
1885 | if (w->reschedule_cb) |
|
|
1886 | { |
|
|
1887 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1888 | |
|
|
1889 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1890 | |
|
|
1891 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1892 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1893 | } |
|
|
1894 | else if (w->interval) |
|
|
1895 | { |
|
|
1896 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1897 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1898 | /* this might happen because of floating point inexactness */ |
|
|
1899 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1900 | { |
|
|
1901 | ev_at (w) += w->interval; |
|
|
1902 | |
|
|
1903 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
1904 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
1905 | /* has effectively asked to get triggered more often than possible */ |
|
|
1906 | if (ev_at (w) < ev_rt_now) |
|
|
1907 | ev_at (w) = ev_rt_now; |
|
|
1908 | } |
|
|
1909 | |
|
|
1910 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1911 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1912 | } |
|
|
1913 | else |
|
|
1914 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1915 | |
|
|
1916 | EV_FREQUENT_CHECK; |
|
|
1917 | feed_reverse (EV_A_ (W)w); |
|
|
1918 | } |
|
|
1919 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
1920 | |
|
|
1921 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
1922 | } |
|
|
1923 | } |
|
|
1924 | |
|
|
1925 | /* simply recalculate all periodics */ |
|
|
1926 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
|
|
1927 | static void noinline |
|
|
1928 | periodics_reschedule (EV_P) |
592 | { |
1929 | { |
593 | int i; |
1930 | int i; |
594 | |
1931 | |
595 | ev_now = ev_time (); |
1932 | /* adjust periodics after time jump */ |
|
|
1933 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
1934 | { |
|
|
1935 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
596 | |
1936 | |
597 | if (have_monotonic) |
1937 | if (w->reschedule_cb) |
|
|
1938 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1939 | else if (w->interval) |
|
|
1940 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1941 | |
|
|
1942 | ANHE_at_cache (periodics [i]); |
598 | { |
1943 | } |
|
|
1944 | |
|
|
1945 | reheap (periodics, periodiccnt); |
|
|
1946 | } |
|
|
1947 | #endif |
|
|
1948 | |
|
|
1949 | /* adjust all timers by a given offset */ |
|
|
1950 | static void noinline |
|
|
1951 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
1952 | { |
|
|
1953 | int i; |
|
|
1954 | |
|
|
1955 | for (i = 0; i < timercnt; ++i) |
|
|
1956 | { |
|
|
1957 | ANHE *he = timers + i + HEAP0; |
|
|
1958 | ANHE_w (*he)->at += adjust; |
|
|
1959 | ANHE_at_cache (*he); |
|
|
1960 | } |
|
|
1961 | } |
|
|
1962 | |
|
|
1963 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
1964 | /* also detetc if there was a timejump, and act accordingly */ |
|
|
1965 | inline_speed void |
|
|
1966 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1967 | { |
|
|
1968 | #if EV_USE_MONOTONIC |
|
|
1969 | if (expect_true (have_monotonic)) |
|
|
1970 | { |
|
|
1971 | int i; |
599 | ev_tstamp odiff = diff; |
1972 | ev_tstamp odiff = rtmn_diff; |
600 | |
1973 | |
601 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1974 | mn_now = get_clock (); |
|
|
1975 | |
|
|
1976 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1977 | /* interpolate in the meantime */ |
|
|
1978 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
602 | { |
1979 | { |
603 | now = get_clock (); |
1980 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1981 | return; |
|
|
1982 | } |
|
|
1983 | |
|
|
1984 | now_floor = mn_now; |
|
|
1985 | ev_rt_now = ev_time (); |
|
|
1986 | |
|
|
1987 | /* loop a few times, before making important decisions. |
|
|
1988 | * on the choice of "4": one iteration isn't enough, |
|
|
1989 | * in case we get preempted during the calls to |
|
|
1990 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1991 | * to succeed in that case, though. and looping a few more times |
|
|
1992 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1993 | * in the unlikely event of having been preempted here. |
|
|
1994 | */ |
|
|
1995 | for (i = 4; --i; ) |
|
|
1996 | { |
604 | diff = ev_now - now; |
1997 | rtmn_diff = ev_rt_now - mn_now; |
605 | |
1998 | |
606 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1999 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
607 | return; /* all is well */ |
2000 | return; /* all is well */ |
608 | |
2001 | |
609 | ev_now = ev_time (); |
2002 | ev_rt_now = ev_time (); |
|
|
2003 | mn_now = get_clock (); |
|
|
2004 | now_floor = mn_now; |
610 | } |
2005 | } |
611 | |
2006 | |
612 | periodics_reschedule (diff - odiff); |
|
|
613 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
2007 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2008 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2009 | # if EV_PERIODIC_ENABLE |
|
|
2010 | periodics_reschedule (EV_A); |
|
|
2011 | # endif |
614 | } |
2012 | } |
615 | else |
2013 | else |
|
|
2014 | #endif |
616 | { |
2015 | { |
617 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
2016 | ev_rt_now = ev_time (); |
|
|
2017 | |
|
|
2018 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
618 | { |
2019 | { |
619 | periodics_reschedule (ev_now - now); |
|
|
620 | |
|
|
621 | /* adjust timers. this is easy, as the offset is the same for all */ |
2020 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
622 | for (i = 0; i < timercnt; ++i) |
2021 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
623 | timers [i]->at += diff; |
2022 | #if EV_PERIODIC_ENABLE |
|
|
2023 | periodics_reschedule (EV_A); |
|
|
2024 | #endif |
624 | } |
2025 | } |
625 | |
2026 | |
626 | now = ev_now; |
2027 | mn_now = ev_rt_now; |
627 | } |
2028 | } |
628 | } |
2029 | } |
629 | |
2030 | |
630 | int ev_loop_done; |
2031 | void |
631 | |
|
|
632 | void ev_loop (int flags) |
2032 | ev_loop (EV_P_ int flags) |
633 | { |
2033 | { |
634 | double block; |
2034 | ++loop_depth; |
635 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
2035 | |
|
|
2036 | loop_done = EVUNLOOP_CANCEL; |
|
|
2037 | |
|
|
2038 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
636 | |
2039 | |
637 | do |
2040 | do |
638 | { |
2041 | { |
|
|
2042 | #if EV_VERIFY >= 2 |
|
|
2043 | ev_loop_verify (EV_A); |
|
|
2044 | #endif |
|
|
2045 | |
|
|
2046 | #ifndef _WIN32 |
|
|
2047 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2048 | if (expect_false (getpid () != curpid)) |
|
|
2049 | { |
|
|
2050 | curpid = getpid (); |
|
|
2051 | postfork = 1; |
|
|
2052 | } |
|
|
2053 | #endif |
|
|
2054 | |
|
|
2055 | #if EV_FORK_ENABLE |
|
|
2056 | /* we might have forked, so queue fork handlers */ |
|
|
2057 | if (expect_false (postfork)) |
|
|
2058 | if (forkcnt) |
|
|
2059 | { |
|
|
2060 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2061 | call_pending (EV_A); |
|
|
2062 | } |
|
|
2063 | #endif |
|
|
2064 | |
639 | /* queue check watchers (and execute them) */ |
2065 | /* queue prepare watchers (and execute them) */ |
640 | if (preparecnt) |
2066 | if (expect_false (preparecnt)) |
641 | { |
2067 | { |
642 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
2068 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
643 | call_pending (); |
2069 | call_pending (EV_A); |
644 | } |
2070 | } |
645 | |
2071 | |
|
|
2072 | /* we might have forked, so reify kernel state if necessary */ |
|
|
2073 | if (expect_false (postfork)) |
|
|
2074 | loop_fork (EV_A); |
|
|
2075 | |
646 | /* update fd-related kernel structures */ |
2076 | /* update fd-related kernel structures */ |
647 | fd_reify (); |
2077 | fd_reify (EV_A); |
648 | |
2078 | |
649 | /* calculate blocking time */ |
2079 | /* calculate blocking time */ |
|
|
2080 | { |
|
|
2081 | ev_tstamp waittime = 0.; |
|
|
2082 | ev_tstamp sleeptime = 0.; |
650 | |
2083 | |
651 | /* we only need this for !monotonic clockor timers, but as we basically |
2084 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
652 | always have timers, we just calculate it always */ |
|
|
653 | ev_now = ev_time (); |
|
|
654 | |
|
|
655 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
656 | block = 0.; |
|
|
657 | else |
|
|
658 | { |
2085 | { |
|
|
2086 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2087 | ev_tstamp prev_mn_now = mn_now; |
|
|
2088 | |
|
|
2089 | /* update time to cancel out callback processing overhead */ |
|
|
2090 | time_update (EV_A_ 1e100); |
|
|
2091 | |
659 | block = MAX_BLOCKTIME; |
2092 | waittime = MAX_BLOCKTIME; |
660 | |
2093 | |
661 | if (timercnt) |
2094 | if (timercnt) |
662 | { |
2095 | { |
663 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
2096 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
664 | if (block > to) block = to; |
2097 | if (waittime > to) waittime = to; |
665 | } |
2098 | } |
666 | |
2099 | |
|
|
2100 | #if EV_PERIODIC_ENABLE |
667 | if (periodiccnt) |
2101 | if (periodiccnt) |
668 | { |
2102 | { |
669 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
2103 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
670 | if (block > to) block = to; |
2104 | if (waittime > to) waittime = to; |
671 | } |
2105 | } |
|
|
2106 | #endif |
672 | |
2107 | |
673 | if (block < 0.) block = 0.; |
2108 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2109 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2110 | waittime = timeout_blocktime; |
|
|
2111 | |
|
|
2112 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2113 | if (expect_false (io_blocktime)) |
|
|
2114 | { |
|
|
2115 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2116 | |
|
|
2117 | if (sleeptime > waittime - backend_fudge) |
|
|
2118 | sleeptime = waittime - backend_fudge; |
|
|
2119 | |
|
|
2120 | if (expect_true (sleeptime > 0.)) |
|
|
2121 | { |
|
|
2122 | ev_sleep (sleeptime); |
|
|
2123 | waittime -= sleeptime; |
|
|
2124 | } |
|
|
2125 | } |
674 | } |
2126 | } |
675 | |
2127 | |
676 | method_poll (block); |
2128 | ++loop_count; |
|
|
2129 | backend_poll (EV_A_ waittime); |
677 | |
2130 | |
678 | /* update ev_now, do magic */ |
2131 | /* update ev_rt_now, do magic */ |
679 | time_update (); |
2132 | time_update (EV_A_ waittime + sleeptime); |
|
|
2133 | } |
680 | |
2134 | |
681 | /* queue pending timers and reschedule them */ |
2135 | /* queue pending timers and reschedule them */ |
682 | timers_reify (); /* relative timers called last */ |
2136 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2137 | #if EV_PERIODIC_ENABLE |
683 | periodics_reify (); /* absolute timers called first */ |
2138 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2139 | #endif |
684 | |
2140 | |
|
|
2141 | #if EV_IDLE_ENABLE |
685 | /* queue idle watchers unless io or timers are pending */ |
2142 | /* queue idle watchers unless other events are pending */ |
686 | if (!pendingcnt) |
2143 | idle_reify (EV_A); |
687 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
2144 | #endif |
688 | |
2145 | |
689 | /* queue check watchers, to be executed first */ |
2146 | /* queue check watchers, to be executed first */ |
690 | if (checkcnt) |
2147 | if (expect_false (checkcnt)) |
691 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
2148 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
692 | |
2149 | |
693 | call_pending (); |
2150 | call_pending (EV_A); |
694 | } |
2151 | } |
695 | while (!ev_loop_done); |
2152 | while (expect_true ( |
|
|
2153 | activecnt |
|
|
2154 | && !loop_done |
|
|
2155 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2156 | )); |
696 | |
2157 | |
697 | if (ev_loop_done != 2) |
2158 | if (loop_done == EVUNLOOP_ONE) |
|
|
2159 | loop_done = EVUNLOOP_CANCEL; |
|
|
2160 | |
|
|
2161 | --loop_depth; |
|
|
2162 | } |
|
|
2163 | |
|
|
2164 | void |
|
|
2165 | ev_unloop (EV_P_ int how) |
|
|
2166 | { |
698 | ev_loop_done = 0; |
2167 | loop_done = how; |
|
|
2168 | } |
|
|
2169 | |
|
|
2170 | void |
|
|
2171 | ev_ref (EV_P) |
|
|
2172 | { |
|
|
2173 | ++activecnt; |
|
|
2174 | } |
|
|
2175 | |
|
|
2176 | void |
|
|
2177 | ev_unref (EV_P) |
|
|
2178 | { |
|
|
2179 | --activecnt; |
|
|
2180 | } |
|
|
2181 | |
|
|
2182 | void |
|
|
2183 | ev_now_update (EV_P) |
|
|
2184 | { |
|
|
2185 | time_update (EV_A_ 1e100); |
|
|
2186 | } |
|
|
2187 | |
|
|
2188 | void |
|
|
2189 | ev_suspend (EV_P) |
|
|
2190 | { |
|
|
2191 | ev_now_update (EV_A); |
|
|
2192 | } |
|
|
2193 | |
|
|
2194 | void |
|
|
2195 | ev_resume (EV_P) |
|
|
2196 | { |
|
|
2197 | ev_tstamp mn_prev = mn_now; |
|
|
2198 | |
|
|
2199 | ev_now_update (EV_A); |
|
|
2200 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2201 | #if EV_PERIODIC_ENABLE |
|
|
2202 | /* TODO: really do this? */ |
|
|
2203 | periodics_reschedule (EV_A); |
|
|
2204 | #endif |
699 | } |
2205 | } |
700 | |
2206 | |
701 | /*****************************************************************************/ |
2207 | /*****************************************************************************/ |
|
|
2208 | /* singly-linked list management, used when the expected list length is short */ |
702 | |
2209 | |
703 | static void |
2210 | inline_size void |
704 | wlist_add (WL *head, WL elem) |
2211 | wlist_add (WL *head, WL elem) |
705 | { |
2212 | { |
706 | elem->next = *head; |
2213 | elem->next = *head; |
707 | *head = elem; |
2214 | *head = elem; |
708 | } |
2215 | } |
709 | |
2216 | |
710 | static void |
2217 | inline_size void |
711 | wlist_del (WL *head, WL elem) |
2218 | wlist_del (WL *head, WL elem) |
712 | { |
2219 | { |
713 | while (*head) |
2220 | while (*head) |
714 | { |
2221 | { |
715 | if (*head == elem) |
2222 | if (*head == elem) |
… | |
… | |
720 | |
2227 | |
721 | head = &(*head)->next; |
2228 | head = &(*head)->next; |
722 | } |
2229 | } |
723 | } |
2230 | } |
724 | |
2231 | |
725 | static void |
2232 | /* internal, faster, version of ev_clear_pending */ |
726 | ev_clear (W w) |
2233 | inline_speed void |
|
|
2234 | clear_pending (EV_P_ W w) |
727 | { |
2235 | { |
728 | if (w->pending) |
2236 | if (w->pending) |
729 | { |
2237 | { |
730 | pendings [w->pending - 1].w = 0; |
2238 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
731 | w->pending = 0; |
2239 | w->pending = 0; |
732 | } |
2240 | } |
733 | } |
2241 | } |
734 | |
2242 | |
735 | static void |
2243 | int |
|
|
2244 | ev_clear_pending (EV_P_ void *w) |
|
|
2245 | { |
|
|
2246 | W w_ = (W)w; |
|
|
2247 | int pending = w_->pending; |
|
|
2248 | |
|
|
2249 | if (expect_true (pending)) |
|
|
2250 | { |
|
|
2251 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2252 | p->w = (W)&pending_w; |
|
|
2253 | w_->pending = 0; |
|
|
2254 | return p->events; |
|
|
2255 | } |
|
|
2256 | else |
|
|
2257 | return 0; |
|
|
2258 | } |
|
|
2259 | |
|
|
2260 | inline_size void |
|
|
2261 | pri_adjust (EV_P_ W w) |
|
|
2262 | { |
|
|
2263 | int pri = w->priority; |
|
|
2264 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2265 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2266 | w->priority = pri; |
|
|
2267 | } |
|
|
2268 | |
|
|
2269 | inline_speed void |
736 | ev_start (W w, int active) |
2270 | ev_start (EV_P_ W w, int active) |
737 | { |
2271 | { |
|
|
2272 | pri_adjust (EV_A_ w); |
738 | w->active = active; |
2273 | w->active = active; |
|
|
2274 | ev_ref (EV_A); |
739 | } |
2275 | } |
740 | |
2276 | |
741 | static void |
2277 | inline_size void |
742 | ev_stop (W w) |
2278 | ev_stop (EV_P_ W w) |
743 | { |
2279 | { |
|
|
2280 | ev_unref (EV_A); |
744 | w->active = 0; |
2281 | w->active = 0; |
745 | } |
2282 | } |
746 | |
2283 | |
747 | /*****************************************************************************/ |
2284 | /*****************************************************************************/ |
748 | |
2285 | |
749 | void |
2286 | void noinline |
750 | ev_io_start (struct ev_io *w) |
2287 | ev_io_start (EV_P_ ev_io *w) |
751 | { |
2288 | { |
|
|
2289 | int fd = w->fd; |
|
|
2290 | |
752 | if (ev_is_active (w)) |
2291 | if (expect_false (ev_is_active (w))) |
753 | return; |
2292 | return; |
754 | |
2293 | |
755 | int fd = w->fd; |
2294 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2295 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
756 | |
2296 | |
|
|
2297 | EV_FREQUENT_CHECK; |
|
|
2298 | |
757 | ev_start ((W)w, 1); |
2299 | ev_start (EV_A_ (W)w, 1); |
758 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
2300 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
759 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2301 | wlist_add (&anfds[fd].head, (WL)w); |
760 | |
2302 | |
761 | fd_change (fd); |
2303 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); |
762 | } |
2304 | w->events &= ~EV__IOFDSET; |
763 | |
2305 | |
764 | void |
2306 | EV_FREQUENT_CHECK; |
|
|
2307 | } |
|
|
2308 | |
|
|
2309 | void noinline |
765 | ev_io_stop (struct ev_io *w) |
2310 | ev_io_stop (EV_P_ ev_io *w) |
766 | { |
2311 | { |
767 | ev_clear ((W)w); |
2312 | clear_pending (EV_A_ (W)w); |
768 | if (!ev_is_active (w)) |
2313 | if (expect_false (!ev_is_active (w))) |
769 | return; |
2314 | return; |
770 | |
2315 | |
|
|
2316 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2317 | |
|
|
2318 | EV_FREQUENT_CHECK; |
|
|
2319 | |
771 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2320 | wlist_del (&anfds[w->fd].head, (WL)w); |
772 | ev_stop ((W)w); |
2321 | ev_stop (EV_A_ (W)w); |
773 | |
2322 | |
774 | fd_change (w->fd); |
2323 | fd_change (EV_A_ w->fd, 1); |
775 | } |
|
|
776 | |
2324 | |
777 | void |
2325 | EV_FREQUENT_CHECK; |
|
|
2326 | } |
|
|
2327 | |
|
|
2328 | void noinline |
778 | ev_timer_start (struct ev_timer *w) |
2329 | ev_timer_start (EV_P_ ev_timer *w) |
779 | { |
2330 | { |
780 | if (ev_is_active (w)) |
2331 | if (expect_false (ev_is_active (w))) |
781 | return; |
2332 | return; |
782 | |
2333 | |
783 | w->at += now; |
2334 | ev_at (w) += mn_now; |
784 | |
2335 | |
785 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
2336 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
786 | |
2337 | |
787 | ev_start ((W)w, ++timercnt); |
2338 | EV_FREQUENT_CHECK; |
788 | array_needsize (timers, timermax, timercnt, ); |
|
|
789 | timers [timercnt - 1] = w; |
|
|
790 | upheap ((WT *)timers, timercnt - 1); |
|
|
791 | } |
|
|
792 | |
2339 | |
793 | void |
2340 | ++timercnt; |
|
|
2341 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2342 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2343 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2344 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2345 | upheap (timers, ev_active (w)); |
|
|
2346 | |
|
|
2347 | EV_FREQUENT_CHECK; |
|
|
2348 | |
|
|
2349 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2350 | } |
|
|
2351 | |
|
|
2352 | void noinline |
794 | ev_timer_stop (struct ev_timer *w) |
2353 | ev_timer_stop (EV_P_ ev_timer *w) |
795 | { |
2354 | { |
796 | ev_clear ((W)w); |
2355 | clear_pending (EV_A_ (W)w); |
797 | if (!ev_is_active (w)) |
2356 | if (expect_false (!ev_is_active (w))) |
798 | return; |
2357 | return; |
799 | |
2358 | |
800 | if (w->active < timercnt--) |
2359 | EV_FREQUENT_CHECK; |
|
|
2360 | |
|
|
2361 | { |
|
|
2362 | int active = ev_active (w); |
|
|
2363 | |
|
|
2364 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2365 | |
|
|
2366 | --timercnt; |
|
|
2367 | |
|
|
2368 | if (expect_true (active < timercnt + HEAP0)) |
801 | { |
2369 | { |
802 | timers [w->active - 1] = timers [timercnt]; |
2370 | timers [active] = timers [timercnt + HEAP0]; |
803 | downheap ((WT *)timers, timercnt, w->active - 1); |
2371 | adjustheap (timers, timercnt, active); |
804 | } |
2372 | } |
|
|
2373 | } |
805 | |
2374 | |
806 | w->at = w->repeat; |
2375 | EV_FREQUENT_CHECK; |
807 | |
2376 | |
|
|
2377 | ev_at (w) -= mn_now; |
|
|
2378 | |
808 | ev_stop ((W)w); |
2379 | ev_stop (EV_A_ (W)w); |
809 | } |
2380 | } |
810 | |
2381 | |
811 | void |
2382 | void noinline |
812 | ev_timer_again (struct ev_timer *w) |
2383 | ev_timer_again (EV_P_ ev_timer *w) |
813 | { |
2384 | { |
|
|
2385 | EV_FREQUENT_CHECK; |
|
|
2386 | |
814 | if (ev_is_active (w)) |
2387 | if (ev_is_active (w)) |
815 | { |
2388 | { |
816 | if (w->repeat) |
2389 | if (w->repeat) |
817 | { |
2390 | { |
818 | w->at = now + w->repeat; |
2391 | ev_at (w) = mn_now + w->repeat; |
|
|
2392 | ANHE_at_cache (timers [ev_active (w)]); |
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
2393 | adjustheap (timers, timercnt, ev_active (w)); |
820 | } |
2394 | } |
821 | else |
2395 | else |
822 | ev_timer_stop (w); |
2396 | ev_timer_stop (EV_A_ w); |
823 | } |
2397 | } |
824 | else if (w->repeat) |
2398 | else if (w->repeat) |
|
|
2399 | { |
|
|
2400 | ev_at (w) = w->repeat; |
825 | ev_timer_start (w); |
2401 | ev_timer_start (EV_A_ w); |
826 | } |
2402 | } |
827 | |
2403 | |
828 | void |
2404 | EV_FREQUENT_CHECK; |
|
|
2405 | } |
|
|
2406 | |
|
|
2407 | #if EV_PERIODIC_ENABLE |
|
|
2408 | void noinline |
829 | ev_periodic_start (struct ev_periodic *w) |
2409 | ev_periodic_start (EV_P_ ev_periodic *w) |
830 | { |
2410 | { |
831 | if (ev_is_active (w)) |
2411 | if (expect_false (ev_is_active (w))) |
832 | return; |
2412 | return; |
833 | |
2413 | |
834 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
2414 | if (w->reschedule_cb) |
835 | |
2415 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2416 | else if (w->interval) |
|
|
2417 | { |
|
|
2418 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
836 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2419 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
837 | if (w->interval) |
|
|
838 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
2420 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2421 | } |
|
|
2422 | else |
|
|
2423 | ev_at (w) = w->offset; |
839 | |
2424 | |
|
|
2425 | EV_FREQUENT_CHECK; |
|
|
2426 | |
|
|
2427 | ++periodiccnt; |
840 | ev_start ((W)w, ++periodiccnt); |
2428 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
841 | array_needsize (periodics, periodicmax, periodiccnt, ); |
2429 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
842 | periodics [periodiccnt - 1] = w; |
2430 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
843 | upheap ((WT *)periodics, periodiccnt - 1); |
2431 | ANHE_at_cache (periodics [ev_active (w)]); |
844 | } |
2432 | upheap (periodics, ev_active (w)); |
845 | |
2433 | |
846 | void |
2434 | EV_FREQUENT_CHECK; |
|
|
2435 | |
|
|
2436 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2437 | } |
|
|
2438 | |
|
|
2439 | void noinline |
847 | ev_periodic_stop (struct ev_periodic *w) |
2440 | ev_periodic_stop (EV_P_ ev_periodic *w) |
848 | { |
2441 | { |
849 | ev_clear ((W)w); |
2442 | clear_pending (EV_A_ (W)w); |
850 | if (!ev_is_active (w)) |
2443 | if (expect_false (!ev_is_active (w))) |
851 | return; |
2444 | return; |
852 | |
2445 | |
853 | if (w->active < periodiccnt--) |
2446 | EV_FREQUENT_CHECK; |
|
|
2447 | |
|
|
2448 | { |
|
|
2449 | int active = ev_active (w); |
|
|
2450 | |
|
|
2451 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2452 | |
|
|
2453 | --periodiccnt; |
|
|
2454 | |
|
|
2455 | if (expect_true (active < periodiccnt + HEAP0)) |
854 | { |
2456 | { |
855 | periodics [w->active - 1] = periodics [periodiccnt]; |
2457 | periodics [active] = periodics [periodiccnt + HEAP0]; |
856 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
2458 | adjustheap (periodics, periodiccnt, active); |
857 | } |
2459 | } |
|
|
2460 | } |
858 | |
2461 | |
|
|
2462 | EV_FREQUENT_CHECK; |
|
|
2463 | |
859 | ev_stop ((W)w); |
2464 | ev_stop (EV_A_ (W)w); |
860 | } |
2465 | } |
861 | |
2466 | |
862 | void |
2467 | void noinline |
|
|
2468 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2469 | { |
|
|
2470 | /* TODO: use adjustheap and recalculation */ |
|
|
2471 | ev_periodic_stop (EV_A_ w); |
|
|
2472 | ev_periodic_start (EV_A_ w); |
|
|
2473 | } |
|
|
2474 | #endif |
|
|
2475 | |
|
|
2476 | #ifndef SA_RESTART |
|
|
2477 | # define SA_RESTART 0 |
|
|
2478 | #endif |
|
|
2479 | |
|
|
2480 | void noinline |
863 | ev_signal_start (struct ev_signal *w) |
2481 | ev_signal_start (EV_P_ ev_signal *w) |
864 | { |
2482 | { |
|
|
2483 | #if EV_MULTIPLICITY |
|
|
2484 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2485 | #endif |
865 | if (ev_is_active (w)) |
2486 | if (expect_false (ev_is_active (w))) |
866 | return; |
2487 | return; |
867 | |
2488 | |
|
|
2489 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
2490 | |
|
|
2491 | evpipe_init (EV_A); |
|
|
2492 | |
|
|
2493 | EV_FREQUENT_CHECK; |
|
|
2494 | |
|
|
2495 | { |
|
|
2496 | #ifndef _WIN32 |
|
|
2497 | sigset_t full, prev; |
|
|
2498 | sigfillset (&full); |
|
|
2499 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2500 | #endif |
|
|
2501 | |
|
|
2502 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
|
|
2503 | |
|
|
2504 | #ifndef _WIN32 |
|
|
2505 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2506 | #endif |
|
|
2507 | } |
|
|
2508 | |
868 | ev_start ((W)w, 1); |
2509 | ev_start (EV_A_ (W)w, 1); |
869 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
870 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2510 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
871 | |
2511 | |
872 | if (!w->next) |
2512 | if (!((WL)w)->next) |
873 | { |
2513 | { |
|
|
2514 | #if _WIN32 |
|
|
2515 | signal (w->signum, ev_sighandler); |
|
|
2516 | #else |
874 | struct sigaction sa; |
2517 | struct sigaction sa; |
875 | sa.sa_handler = sighandler; |
2518 | sa.sa_handler = ev_sighandler; |
876 | sigfillset (&sa.sa_mask); |
2519 | sigfillset (&sa.sa_mask); |
877 | sa.sa_flags = 0; |
2520 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
878 | sigaction (w->signum, &sa, 0); |
2521 | sigaction (w->signum, &sa, 0); |
|
|
2522 | #endif |
879 | } |
2523 | } |
880 | } |
|
|
881 | |
2524 | |
882 | void |
2525 | EV_FREQUENT_CHECK; |
|
|
2526 | } |
|
|
2527 | |
|
|
2528 | void noinline |
883 | ev_signal_stop (struct ev_signal *w) |
2529 | ev_signal_stop (EV_P_ ev_signal *w) |
884 | { |
2530 | { |
885 | ev_clear ((W)w); |
2531 | clear_pending (EV_A_ (W)w); |
886 | if (!ev_is_active (w)) |
2532 | if (expect_false (!ev_is_active (w))) |
887 | return; |
2533 | return; |
888 | |
2534 | |
|
|
2535 | EV_FREQUENT_CHECK; |
|
|
2536 | |
889 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2537 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
890 | ev_stop ((W)w); |
2538 | ev_stop (EV_A_ (W)w); |
891 | |
2539 | |
892 | if (!signals [w->signum - 1].head) |
2540 | if (!signals [w->signum - 1].head) |
893 | signal (w->signum, SIG_DFL); |
2541 | signal (w->signum, SIG_DFL); |
894 | } |
|
|
895 | |
2542 | |
|
|
2543 | EV_FREQUENT_CHECK; |
|
|
2544 | } |
|
|
2545 | |
896 | void |
2546 | void |
897 | ev_idle_start (struct ev_idle *w) |
2547 | ev_child_start (EV_P_ ev_child *w) |
898 | { |
2548 | { |
|
|
2549 | #if EV_MULTIPLICITY |
|
|
2550 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2551 | #endif |
899 | if (ev_is_active (w)) |
2552 | if (expect_false (ev_is_active (w))) |
900 | return; |
2553 | return; |
901 | |
2554 | |
902 | ev_start ((W)w, ++idlecnt); |
2555 | EV_FREQUENT_CHECK; |
903 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
904 | idles [idlecnt - 1] = w; |
|
|
905 | } |
|
|
906 | |
2556 | |
|
|
2557 | ev_start (EV_A_ (W)w, 1); |
|
|
2558 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2559 | |
|
|
2560 | EV_FREQUENT_CHECK; |
|
|
2561 | } |
|
|
2562 | |
907 | void |
2563 | void |
908 | ev_idle_stop (struct ev_idle *w) |
2564 | ev_child_stop (EV_P_ ev_child *w) |
909 | { |
2565 | { |
910 | ev_clear ((W)w); |
2566 | clear_pending (EV_A_ (W)w); |
911 | if (ev_is_active (w)) |
2567 | if (expect_false (!ev_is_active (w))) |
912 | return; |
2568 | return; |
913 | |
2569 | |
914 | idles [w->active - 1] = idles [--idlecnt]; |
2570 | EV_FREQUENT_CHECK; |
|
|
2571 | |
|
|
2572 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
915 | ev_stop ((W)w); |
2573 | ev_stop (EV_A_ (W)w); |
916 | } |
|
|
917 | |
2574 | |
918 | void |
2575 | EV_FREQUENT_CHECK; |
919 | ev_prepare_start (struct ev_prepare *w) |
2576 | } |
|
|
2577 | |
|
|
2578 | #if EV_STAT_ENABLE |
|
|
2579 | |
|
|
2580 | # ifdef _WIN32 |
|
|
2581 | # undef lstat |
|
|
2582 | # define lstat(a,b) _stati64 (a,b) |
|
|
2583 | # endif |
|
|
2584 | |
|
|
2585 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2586 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2587 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2588 | |
|
|
2589 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2590 | |
|
|
2591 | #if EV_USE_INOTIFY |
|
|
2592 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2593 | |
|
|
2594 | static void noinline |
|
|
2595 | infy_add (EV_P_ ev_stat *w) |
920 | { |
2596 | { |
921 | if (ev_is_active (w)) |
2597 | 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); |
|
|
2598 | |
|
|
2599 | if (w->wd < 0) |
|
|
2600 | { |
|
|
2601 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2602 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2603 | |
|
|
2604 | /* monitor some parent directory for speedup hints */ |
|
|
2605 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2606 | /* but an efficiency issue only */ |
|
|
2607 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2608 | { |
|
|
2609 | char path [4096]; |
|
|
2610 | strcpy (path, w->path); |
|
|
2611 | |
|
|
2612 | do |
|
|
2613 | { |
|
|
2614 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2615 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2616 | |
|
|
2617 | char *pend = strrchr (path, '/'); |
|
|
2618 | |
|
|
2619 | if (!pend || pend == path) |
|
|
2620 | break; |
|
|
2621 | |
|
|
2622 | *pend = 0; |
|
|
2623 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2624 | } |
|
|
2625 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2626 | } |
|
|
2627 | } |
|
|
2628 | |
|
|
2629 | if (w->wd >= 0) |
|
|
2630 | { |
|
|
2631 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2632 | |
|
|
2633 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2634 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2635 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2636 | struct statfs sfs; |
|
|
2637 | |
|
|
2638 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2639 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2640 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2641 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2642 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2643 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2644 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2645 | return; |
|
|
2646 | |
|
|
2647 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2648 | ev_timer_again (EV_A_ &w->timer); |
|
|
2649 | } |
|
|
2650 | } |
|
|
2651 | |
|
|
2652 | static void noinline |
|
|
2653 | infy_del (EV_P_ ev_stat *w) |
|
|
2654 | { |
|
|
2655 | int slot; |
|
|
2656 | int wd = w->wd; |
|
|
2657 | |
|
|
2658 | if (wd < 0) |
922 | return; |
2659 | return; |
923 | |
2660 | |
|
|
2661 | w->wd = -2; |
|
|
2662 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2663 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2664 | |
|
|
2665 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2666 | inotify_rm_watch (fs_fd, wd); |
|
|
2667 | } |
|
|
2668 | |
|
|
2669 | static void noinline |
|
|
2670 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2671 | { |
|
|
2672 | if (slot < 0) |
|
|
2673 | /* overflow, need to check for all hash slots */ |
|
|
2674 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2675 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2676 | else |
|
|
2677 | { |
|
|
2678 | WL w_; |
|
|
2679 | |
|
|
2680 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2681 | { |
|
|
2682 | ev_stat *w = (ev_stat *)w_; |
|
|
2683 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2684 | |
|
|
2685 | if (w->wd == wd || wd == -1) |
|
|
2686 | { |
|
|
2687 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2688 | { |
|
|
2689 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2690 | w->wd = -1; |
|
|
2691 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2692 | } |
|
|
2693 | |
|
|
2694 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2695 | } |
|
|
2696 | } |
|
|
2697 | } |
|
|
2698 | } |
|
|
2699 | |
|
|
2700 | static void |
|
|
2701 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2702 | { |
|
|
2703 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2704 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2705 | int ofs; |
|
|
2706 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2707 | |
|
|
2708 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2709 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2710 | } |
|
|
2711 | |
|
|
2712 | inline_size void |
|
|
2713 | check_2625 (EV_P) |
|
|
2714 | { |
|
|
2715 | /* kernels < 2.6.25 are borked |
|
|
2716 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2717 | */ |
|
|
2718 | struct utsname buf; |
|
|
2719 | int major, minor, micro; |
|
|
2720 | |
|
|
2721 | if (uname (&buf)) |
|
|
2722 | return; |
|
|
2723 | |
|
|
2724 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2725 | return; |
|
|
2726 | |
|
|
2727 | if (major < 2 |
|
|
2728 | || (major == 2 && minor < 6) |
|
|
2729 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2730 | return; |
|
|
2731 | |
|
|
2732 | fs_2625 = 1; |
|
|
2733 | } |
|
|
2734 | |
|
|
2735 | inline_size void |
|
|
2736 | infy_init (EV_P) |
|
|
2737 | { |
|
|
2738 | if (fs_fd != -2) |
|
|
2739 | return; |
|
|
2740 | |
|
|
2741 | fs_fd = -1; |
|
|
2742 | |
|
|
2743 | check_2625 (EV_A); |
|
|
2744 | |
|
|
2745 | fs_fd = inotify_init (); |
|
|
2746 | |
|
|
2747 | if (fs_fd >= 0) |
|
|
2748 | { |
|
|
2749 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2750 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2751 | ev_io_start (EV_A_ &fs_w); |
|
|
2752 | } |
|
|
2753 | } |
|
|
2754 | |
|
|
2755 | inline_size void |
|
|
2756 | infy_fork (EV_P) |
|
|
2757 | { |
|
|
2758 | int slot; |
|
|
2759 | |
|
|
2760 | if (fs_fd < 0) |
|
|
2761 | return; |
|
|
2762 | |
|
|
2763 | close (fs_fd); |
|
|
2764 | fs_fd = inotify_init (); |
|
|
2765 | |
|
|
2766 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2767 | { |
|
|
2768 | WL w_ = fs_hash [slot].head; |
|
|
2769 | fs_hash [slot].head = 0; |
|
|
2770 | |
|
|
2771 | while (w_) |
|
|
2772 | { |
|
|
2773 | ev_stat *w = (ev_stat *)w_; |
|
|
2774 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2775 | |
|
|
2776 | w->wd = -1; |
|
|
2777 | |
|
|
2778 | if (fs_fd >= 0) |
|
|
2779 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2780 | else |
|
|
2781 | ev_timer_again (EV_A_ &w->timer); |
|
|
2782 | } |
|
|
2783 | } |
|
|
2784 | } |
|
|
2785 | |
|
|
2786 | #endif |
|
|
2787 | |
|
|
2788 | #ifdef _WIN32 |
|
|
2789 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
2790 | #else |
|
|
2791 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
2792 | #endif |
|
|
2793 | |
|
|
2794 | void |
|
|
2795 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2796 | { |
|
|
2797 | if (lstat (w->path, &w->attr) < 0) |
|
|
2798 | w->attr.st_nlink = 0; |
|
|
2799 | else if (!w->attr.st_nlink) |
|
|
2800 | w->attr.st_nlink = 1; |
|
|
2801 | } |
|
|
2802 | |
|
|
2803 | static void noinline |
|
|
2804 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2805 | { |
|
|
2806 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2807 | |
|
|
2808 | /* we copy this here each the time so that */ |
|
|
2809 | /* prev has the old value when the callback gets invoked */ |
|
|
2810 | w->prev = w->attr; |
|
|
2811 | ev_stat_stat (EV_A_ w); |
|
|
2812 | |
|
|
2813 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2814 | if ( |
|
|
2815 | w->prev.st_dev != w->attr.st_dev |
|
|
2816 | || w->prev.st_ino != w->attr.st_ino |
|
|
2817 | || w->prev.st_mode != w->attr.st_mode |
|
|
2818 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2819 | || w->prev.st_uid != w->attr.st_uid |
|
|
2820 | || w->prev.st_gid != w->attr.st_gid |
|
|
2821 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2822 | || w->prev.st_size != w->attr.st_size |
|
|
2823 | || w->prev.st_atime != w->attr.st_atime |
|
|
2824 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2825 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2826 | ) { |
|
|
2827 | #if EV_USE_INOTIFY |
|
|
2828 | if (fs_fd >= 0) |
|
|
2829 | { |
|
|
2830 | infy_del (EV_A_ w); |
|
|
2831 | infy_add (EV_A_ w); |
|
|
2832 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2833 | } |
|
|
2834 | #endif |
|
|
2835 | |
|
|
2836 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2837 | } |
|
|
2838 | } |
|
|
2839 | |
|
|
2840 | void |
|
|
2841 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2842 | { |
|
|
2843 | if (expect_false (ev_is_active (w))) |
|
|
2844 | return; |
|
|
2845 | |
|
|
2846 | ev_stat_stat (EV_A_ w); |
|
|
2847 | |
|
|
2848 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
2849 | w->interval = MIN_STAT_INTERVAL; |
|
|
2850 | |
|
|
2851 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
2852 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2853 | |
|
|
2854 | #if EV_USE_INOTIFY |
|
|
2855 | infy_init (EV_A); |
|
|
2856 | |
|
|
2857 | if (fs_fd >= 0) |
|
|
2858 | infy_add (EV_A_ w); |
|
|
2859 | else |
|
|
2860 | #endif |
|
|
2861 | ev_timer_again (EV_A_ &w->timer); |
|
|
2862 | |
|
|
2863 | ev_start (EV_A_ (W)w, 1); |
|
|
2864 | |
|
|
2865 | EV_FREQUENT_CHECK; |
|
|
2866 | } |
|
|
2867 | |
|
|
2868 | void |
|
|
2869 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2870 | { |
|
|
2871 | clear_pending (EV_A_ (W)w); |
|
|
2872 | if (expect_false (!ev_is_active (w))) |
|
|
2873 | return; |
|
|
2874 | |
|
|
2875 | EV_FREQUENT_CHECK; |
|
|
2876 | |
|
|
2877 | #if EV_USE_INOTIFY |
|
|
2878 | infy_del (EV_A_ w); |
|
|
2879 | #endif |
|
|
2880 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2881 | |
|
|
2882 | ev_stop (EV_A_ (W)w); |
|
|
2883 | |
|
|
2884 | EV_FREQUENT_CHECK; |
|
|
2885 | } |
|
|
2886 | #endif |
|
|
2887 | |
|
|
2888 | #if EV_IDLE_ENABLE |
|
|
2889 | void |
|
|
2890 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2891 | { |
|
|
2892 | if (expect_false (ev_is_active (w))) |
|
|
2893 | return; |
|
|
2894 | |
|
|
2895 | pri_adjust (EV_A_ (W)w); |
|
|
2896 | |
|
|
2897 | EV_FREQUENT_CHECK; |
|
|
2898 | |
|
|
2899 | { |
|
|
2900 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2901 | |
|
|
2902 | ++idleall; |
|
|
2903 | ev_start (EV_A_ (W)w, active); |
|
|
2904 | |
|
|
2905 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2906 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2907 | } |
|
|
2908 | |
|
|
2909 | EV_FREQUENT_CHECK; |
|
|
2910 | } |
|
|
2911 | |
|
|
2912 | void |
|
|
2913 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2914 | { |
|
|
2915 | clear_pending (EV_A_ (W)w); |
|
|
2916 | if (expect_false (!ev_is_active (w))) |
|
|
2917 | return; |
|
|
2918 | |
|
|
2919 | EV_FREQUENT_CHECK; |
|
|
2920 | |
|
|
2921 | { |
|
|
2922 | int active = ev_active (w); |
|
|
2923 | |
|
|
2924 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2925 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2926 | |
|
|
2927 | ev_stop (EV_A_ (W)w); |
|
|
2928 | --idleall; |
|
|
2929 | } |
|
|
2930 | |
|
|
2931 | EV_FREQUENT_CHECK; |
|
|
2932 | } |
|
|
2933 | #endif |
|
|
2934 | |
|
|
2935 | void |
|
|
2936 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2937 | { |
|
|
2938 | if (expect_false (ev_is_active (w))) |
|
|
2939 | return; |
|
|
2940 | |
|
|
2941 | EV_FREQUENT_CHECK; |
|
|
2942 | |
924 | ev_start ((W)w, ++preparecnt); |
2943 | ev_start (EV_A_ (W)w, ++preparecnt); |
925 | array_needsize (prepares, preparemax, preparecnt, ); |
2944 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
926 | prepares [preparecnt - 1] = w; |
2945 | prepares [preparecnt - 1] = w; |
927 | } |
|
|
928 | |
2946 | |
|
|
2947 | EV_FREQUENT_CHECK; |
|
|
2948 | } |
|
|
2949 | |
929 | void |
2950 | void |
930 | ev_prepare_stop (struct ev_prepare *w) |
2951 | ev_prepare_stop (EV_P_ ev_prepare *w) |
931 | { |
2952 | { |
932 | ev_clear ((W)w); |
2953 | clear_pending (EV_A_ (W)w); |
933 | if (ev_is_active (w)) |
2954 | if (expect_false (!ev_is_active (w))) |
934 | return; |
2955 | return; |
935 | |
2956 | |
|
|
2957 | EV_FREQUENT_CHECK; |
|
|
2958 | |
|
|
2959 | { |
|
|
2960 | int active = ev_active (w); |
|
|
2961 | |
936 | prepares [w->active - 1] = prepares [--preparecnt]; |
2962 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2963 | ev_active (prepares [active - 1]) = active; |
|
|
2964 | } |
|
|
2965 | |
937 | ev_stop ((W)w); |
2966 | ev_stop (EV_A_ (W)w); |
938 | } |
|
|
939 | |
2967 | |
|
|
2968 | EV_FREQUENT_CHECK; |
|
|
2969 | } |
|
|
2970 | |
940 | void |
2971 | void |
941 | ev_check_start (struct ev_check *w) |
2972 | ev_check_start (EV_P_ ev_check *w) |
942 | { |
2973 | { |
943 | if (ev_is_active (w)) |
2974 | if (expect_false (ev_is_active (w))) |
944 | return; |
2975 | return; |
945 | |
2976 | |
|
|
2977 | EV_FREQUENT_CHECK; |
|
|
2978 | |
946 | ev_start ((W)w, ++checkcnt); |
2979 | ev_start (EV_A_ (W)w, ++checkcnt); |
947 | array_needsize (checks, checkmax, checkcnt, ); |
2980 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
948 | checks [checkcnt - 1] = w; |
2981 | checks [checkcnt - 1] = w; |
949 | } |
|
|
950 | |
2982 | |
|
|
2983 | EV_FREQUENT_CHECK; |
|
|
2984 | } |
|
|
2985 | |
951 | void |
2986 | void |
952 | ev_check_stop (struct ev_check *w) |
2987 | ev_check_stop (EV_P_ ev_check *w) |
953 | { |
2988 | { |
954 | ev_clear ((W)w); |
2989 | clear_pending (EV_A_ (W)w); |
955 | if (ev_is_active (w)) |
2990 | if (expect_false (!ev_is_active (w))) |
956 | return; |
2991 | return; |
957 | |
2992 | |
|
|
2993 | EV_FREQUENT_CHECK; |
|
|
2994 | |
|
|
2995 | { |
|
|
2996 | int active = ev_active (w); |
|
|
2997 | |
958 | checks [w->active - 1] = checks [--checkcnt]; |
2998 | checks [active - 1] = checks [--checkcnt]; |
|
|
2999 | ev_active (checks [active - 1]) = active; |
|
|
3000 | } |
|
|
3001 | |
959 | ev_stop ((W)w); |
3002 | ev_stop (EV_A_ (W)w); |
960 | } |
|
|
961 | |
3003 | |
962 | void |
3004 | EV_FREQUENT_CHECK; |
963 | ev_child_start (struct ev_child *w) |
3005 | } |
|
|
3006 | |
|
|
3007 | #if EV_EMBED_ENABLE |
|
|
3008 | void noinline |
|
|
3009 | ev_embed_sweep (EV_P_ ev_embed *w) |
964 | { |
3010 | { |
|
|
3011 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3012 | } |
|
|
3013 | |
|
|
3014 | static void |
|
|
3015 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3016 | { |
|
|
3017 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3018 | |
965 | if (ev_is_active (w)) |
3019 | if (ev_cb (w)) |
|
|
3020 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3021 | else |
|
|
3022 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3023 | } |
|
|
3024 | |
|
|
3025 | static void |
|
|
3026 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3027 | { |
|
|
3028 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3029 | |
|
|
3030 | { |
|
|
3031 | struct ev_loop *loop = w->other; |
|
|
3032 | |
|
|
3033 | while (fdchangecnt) |
|
|
3034 | { |
|
|
3035 | fd_reify (EV_A); |
|
|
3036 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3037 | } |
|
|
3038 | } |
|
|
3039 | } |
|
|
3040 | |
|
|
3041 | static void |
|
|
3042 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3043 | { |
|
|
3044 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3045 | |
|
|
3046 | ev_embed_stop (EV_A_ w); |
|
|
3047 | |
|
|
3048 | { |
|
|
3049 | struct ev_loop *loop = w->other; |
|
|
3050 | |
|
|
3051 | ev_loop_fork (EV_A); |
|
|
3052 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3053 | } |
|
|
3054 | |
|
|
3055 | ev_embed_start (EV_A_ w); |
|
|
3056 | } |
|
|
3057 | |
|
|
3058 | #if 0 |
|
|
3059 | static void |
|
|
3060 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3061 | { |
|
|
3062 | ev_idle_stop (EV_A_ idle); |
|
|
3063 | } |
|
|
3064 | #endif |
|
|
3065 | |
|
|
3066 | void |
|
|
3067 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3068 | { |
|
|
3069 | if (expect_false (ev_is_active (w))) |
966 | return; |
3070 | return; |
967 | |
3071 | |
|
|
3072 | { |
|
|
3073 | struct ev_loop *loop = w->other; |
|
|
3074 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3075 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3076 | } |
|
|
3077 | |
|
|
3078 | EV_FREQUENT_CHECK; |
|
|
3079 | |
|
|
3080 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3081 | ev_io_start (EV_A_ &w->io); |
|
|
3082 | |
|
|
3083 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3084 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3085 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3086 | |
|
|
3087 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3088 | ev_fork_start (EV_A_ &w->fork); |
|
|
3089 | |
|
|
3090 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3091 | |
968 | ev_start ((W)w, 1); |
3092 | ev_start (EV_A_ (W)w, 1); |
969 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
970 | } |
|
|
971 | |
3093 | |
|
|
3094 | EV_FREQUENT_CHECK; |
|
|
3095 | } |
|
|
3096 | |
972 | void |
3097 | void |
973 | ev_child_stop (struct ev_child *w) |
3098 | ev_embed_stop (EV_P_ ev_embed *w) |
974 | { |
3099 | { |
975 | ev_clear ((W)w); |
3100 | clear_pending (EV_A_ (W)w); |
976 | if (ev_is_active (w)) |
3101 | if (expect_false (!ev_is_active (w))) |
977 | return; |
3102 | return; |
978 | |
3103 | |
979 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3104 | EV_FREQUENT_CHECK; |
|
|
3105 | |
|
|
3106 | ev_io_stop (EV_A_ &w->io); |
|
|
3107 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3108 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3109 | |
|
|
3110 | EV_FREQUENT_CHECK; |
|
|
3111 | } |
|
|
3112 | #endif |
|
|
3113 | |
|
|
3114 | #if EV_FORK_ENABLE |
|
|
3115 | void |
|
|
3116 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3117 | { |
|
|
3118 | if (expect_false (ev_is_active (w))) |
|
|
3119 | return; |
|
|
3120 | |
|
|
3121 | EV_FREQUENT_CHECK; |
|
|
3122 | |
|
|
3123 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3124 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3125 | forks [forkcnt - 1] = w; |
|
|
3126 | |
|
|
3127 | EV_FREQUENT_CHECK; |
|
|
3128 | } |
|
|
3129 | |
|
|
3130 | void |
|
|
3131 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3132 | { |
|
|
3133 | clear_pending (EV_A_ (W)w); |
|
|
3134 | if (expect_false (!ev_is_active (w))) |
|
|
3135 | return; |
|
|
3136 | |
|
|
3137 | EV_FREQUENT_CHECK; |
|
|
3138 | |
|
|
3139 | { |
|
|
3140 | int active = ev_active (w); |
|
|
3141 | |
|
|
3142 | forks [active - 1] = forks [--forkcnt]; |
|
|
3143 | ev_active (forks [active - 1]) = active; |
|
|
3144 | } |
|
|
3145 | |
980 | ev_stop ((W)w); |
3146 | ev_stop (EV_A_ (W)w); |
|
|
3147 | |
|
|
3148 | EV_FREQUENT_CHECK; |
981 | } |
3149 | } |
|
|
3150 | #endif |
|
|
3151 | |
|
|
3152 | #if EV_ASYNC_ENABLE |
|
|
3153 | void |
|
|
3154 | ev_async_start (EV_P_ ev_async *w) |
|
|
3155 | { |
|
|
3156 | if (expect_false (ev_is_active (w))) |
|
|
3157 | return; |
|
|
3158 | |
|
|
3159 | evpipe_init (EV_A); |
|
|
3160 | |
|
|
3161 | EV_FREQUENT_CHECK; |
|
|
3162 | |
|
|
3163 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3164 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3165 | asyncs [asynccnt - 1] = w; |
|
|
3166 | |
|
|
3167 | EV_FREQUENT_CHECK; |
|
|
3168 | } |
|
|
3169 | |
|
|
3170 | void |
|
|
3171 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3172 | { |
|
|
3173 | clear_pending (EV_A_ (W)w); |
|
|
3174 | if (expect_false (!ev_is_active (w))) |
|
|
3175 | return; |
|
|
3176 | |
|
|
3177 | EV_FREQUENT_CHECK; |
|
|
3178 | |
|
|
3179 | { |
|
|
3180 | int active = ev_active (w); |
|
|
3181 | |
|
|
3182 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3183 | ev_active (asyncs [active - 1]) = active; |
|
|
3184 | } |
|
|
3185 | |
|
|
3186 | ev_stop (EV_A_ (W)w); |
|
|
3187 | |
|
|
3188 | EV_FREQUENT_CHECK; |
|
|
3189 | } |
|
|
3190 | |
|
|
3191 | void |
|
|
3192 | ev_async_send (EV_P_ ev_async *w) |
|
|
3193 | { |
|
|
3194 | w->sent = 1; |
|
|
3195 | evpipe_write (EV_A_ &gotasync); |
|
|
3196 | } |
|
|
3197 | #endif |
982 | |
3198 | |
983 | /*****************************************************************************/ |
3199 | /*****************************************************************************/ |
984 | |
3200 | |
985 | struct ev_once |
3201 | struct ev_once |
986 | { |
3202 | { |
987 | struct ev_io io; |
3203 | ev_io io; |
988 | struct ev_timer to; |
3204 | ev_timer to; |
989 | void (*cb)(int revents, void *arg); |
3205 | void (*cb)(int revents, void *arg); |
990 | void *arg; |
3206 | void *arg; |
991 | }; |
3207 | }; |
992 | |
3208 | |
993 | static void |
3209 | static void |
994 | once_cb (struct ev_once *once, int revents) |
3210 | once_cb (EV_P_ struct ev_once *once, int revents) |
995 | { |
3211 | { |
996 | void (*cb)(int revents, void *arg) = once->cb; |
3212 | void (*cb)(int revents, void *arg) = once->cb; |
997 | void *arg = once->arg; |
3213 | void *arg = once->arg; |
998 | |
3214 | |
999 | ev_io_stop (&once->io); |
3215 | ev_io_stop (EV_A_ &once->io); |
1000 | ev_timer_stop (&once->to); |
3216 | ev_timer_stop (EV_A_ &once->to); |
1001 | free (once); |
3217 | ev_free (once); |
1002 | |
3218 | |
1003 | cb (revents, arg); |
3219 | cb (revents, arg); |
1004 | } |
3220 | } |
1005 | |
3221 | |
1006 | static void |
3222 | static void |
1007 | once_cb_io (struct ev_io *w, int revents) |
3223 | once_cb_io (EV_P_ ev_io *w, int revents) |
1008 | { |
3224 | { |
1009 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3225 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3226 | |
|
|
3227 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1010 | } |
3228 | } |
1011 | |
3229 | |
1012 | static void |
3230 | static void |
1013 | once_cb_to (struct ev_timer *w, int revents) |
3231 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1014 | { |
3232 | { |
1015 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3233 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
1016 | } |
|
|
1017 | |
3234 | |
|
|
3235 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
3236 | } |
|
|
3237 | |
1018 | void |
3238 | void |
1019 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3239 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1020 | { |
3240 | { |
1021 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
3241 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1022 | |
3242 | |
1023 | if (!once) |
3243 | if (expect_false (!once)) |
|
|
3244 | { |
1024 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3245 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1025 | else |
3246 | return; |
1026 | { |
3247 | } |
|
|
3248 | |
1027 | once->cb = cb; |
3249 | once->cb = cb; |
1028 | once->arg = arg; |
3250 | once->arg = arg; |
1029 | |
3251 | |
1030 | ev_watcher_init (&once->io, once_cb_io); |
3252 | ev_init (&once->io, once_cb_io); |
1031 | if (fd >= 0) |
3253 | if (fd >= 0) |
|
|
3254 | { |
|
|
3255 | ev_io_set (&once->io, fd, events); |
|
|
3256 | ev_io_start (EV_A_ &once->io); |
|
|
3257 | } |
|
|
3258 | |
|
|
3259 | ev_init (&once->to, once_cb_to); |
|
|
3260 | if (timeout >= 0.) |
|
|
3261 | { |
|
|
3262 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3263 | ev_timer_start (EV_A_ &once->to); |
|
|
3264 | } |
|
|
3265 | } |
|
|
3266 | |
|
|
3267 | /*****************************************************************************/ |
|
|
3268 | |
|
|
3269 | #if EV_WALK_ENABLE |
|
|
3270 | void |
|
|
3271 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3272 | { |
|
|
3273 | int i, j; |
|
|
3274 | ev_watcher_list *wl, *wn; |
|
|
3275 | |
|
|
3276 | if (types & (EV_IO | EV_EMBED)) |
|
|
3277 | for (i = 0; i < anfdmax; ++i) |
|
|
3278 | for (wl = anfds [i].head; wl; ) |
1032 | { |
3279 | { |
1033 | ev_io_set (&once->io, fd, events); |
3280 | wn = wl->next; |
1034 | ev_io_start (&once->io); |
3281 | |
|
|
3282 | #if EV_EMBED_ENABLE |
|
|
3283 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3284 | { |
|
|
3285 | if (types & EV_EMBED) |
|
|
3286 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3287 | } |
|
|
3288 | else |
|
|
3289 | #endif |
|
|
3290 | #if EV_USE_INOTIFY |
|
|
3291 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3292 | ; |
|
|
3293 | else |
|
|
3294 | #endif |
|
|
3295 | if ((ev_io *)wl != &pipe_w) |
|
|
3296 | if (types & EV_IO) |
|
|
3297 | cb (EV_A_ EV_IO, wl); |
|
|
3298 | |
|
|
3299 | wl = wn; |
1035 | } |
3300 | } |
1036 | |
3301 | |
1037 | ev_watcher_init (&once->to, once_cb_to); |
3302 | if (types & (EV_TIMER | EV_STAT)) |
1038 | if (timeout >= 0.) |
3303 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3304 | #if EV_STAT_ENABLE |
|
|
3305 | /*TODO: timer is not always active*/ |
|
|
3306 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1039 | { |
3307 | { |
1040 | ev_timer_set (&once->to, timeout, 0.); |
3308 | if (types & EV_STAT) |
1041 | ev_timer_start (&once->to); |
3309 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1042 | } |
3310 | } |
1043 | } |
3311 | else |
1044 | } |
3312 | #endif |
|
|
3313 | if (types & EV_TIMER) |
|
|
3314 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1045 | |
3315 | |
1046 | /*****************************************************************************/ |
3316 | #if EV_PERIODIC_ENABLE |
|
|
3317 | if (types & EV_PERIODIC) |
|
|
3318 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3319 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3320 | #endif |
1047 | |
3321 | |
1048 | #if 0 |
3322 | #if EV_IDLE_ENABLE |
|
|
3323 | if (types & EV_IDLE) |
|
|
3324 | for (j = NUMPRI; i--; ) |
|
|
3325 | for (i = idlecnt [j]; i--; ) |
|
|
3326 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3327 | #endif |
1049 | |
3328 | |
1050 | struct ev_io wio; |
3329 | #if EV_FORK_ENABLE |
|
|
3330 | if (types & EV_FORK) |
|
|
3331 | for (i = forkcnt; i--; ) |
|
|
3332 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3333 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3334 | #endif |
1051 | |
3335 | |
1052 | static void |
3336 | #if EV_ASYNC_ENABLE |
1053 | sin_cb (struct ev_io *w, int revents) |
3337 | if (types & EV_ASYNC) |
1054 | { |
3338 | for (i = asynccnt; i--; ) |
1055 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
3339 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1056 | } |
3340 | #endif |
1057 | |
3341 | |
1058 | static void |
3342 | if (types & EV_PREPARE) |
1059 | ocb (struct ev_timer *w, int revents) |
3343 | for (i = preparecnt; i--; ) |
1060 | { |
3344 | #if EV_EMBED_ENABLE |
1061 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
3345 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1062 | ev_timer_stop (w); |
3346 | #endif |
1063 | ev_timer_start (w); |
3347 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1064 | } |
|
|
1065 | |
3348 | |
1066 | static void |
3349 | if (types & EV_CHECK) |
1067 | scb (struct ev_signal *w, int revents) |
3350 | for (i = checkcnt; i--; ) |
1068 | { |
3351 | cb (EV_A_ EV_CHECK, checks [i]); |
1069 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1070 | ev_io_stop (&wio); |
|
|
1071 | ev_io_start (&wio); |
|
|
1072 | } |
|
|
1073 | |
3352 | |
1074 | static void |
3353 | if (types & EV_SIGNAL) |
1075 | gcb (struct ev_signal *w, int revents) |
|
|
1076 | { |
|
|
1077 | fprintf (stderr, "generic %x\n", revents); |
|
|
1078 | |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | int main (void) |
|
|
1082 | { |
|
|
1083 | ev_init (0); |
|
|
1084 | |
|
|
1085 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1086 | ev_io_start (&wio); |
|
|
1087 | |
|
|
1088 | struct ev_timer t[10000]; |
|
|
1089 | |
|
|
1090 | #if 0 |
|
|
1091 | int i; |
|
|
1092 | for (i = 0; i < 10000; ++i) |
3354 | for (i = 0; i < signalmax; ++i) |
1093 | { |
3355 | for (wl = signals [i].head; wl; ) |
1094 | struct ev_timer *w = t + i; |
3356 | { |
1095 | ev_watcher_init (w, ocb, i); |
3357 | wn = wl->next; |
1096 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
3358 | cb (EV_A_ EV_SIGNAL, wl); |
1097 | ev_timer_start (w); |
3359 | wl = wn; |
1098 | if (drand48 () < 0.5) |
3360 | } |
1099 | ev_timer_stop (w); |
|
|
1100 | } |
|
|
1101 | #endif |
|
|
1102 | |
3361 | |
1103 | struct ev_timer t1; |
3362 | if (types & EV_CHILD) |
1104 | ev_timer_init (&t1, ocb, 5, 10); |
3363 | for (i = EV_PID_HASHSIZE; i--; ) |
1105 | ev_timer_start (&t1); |
3364 | for (wl = childs [i]; wl; ) |
1106 | |
3365 | { |
1107 | struct ev_signal sig; |
3366 | wn = wl->next; |
1108 | ev_signal_init (&sig, scb, SIGQUIT); |
3367 | cb (EV_A_ EV_CHILD, wl); |
1109 | ev_signal_start (&sig); |
3368 | wl = wn; |
1110 | |
3369 | } |
1111 | struct ev_check cw; |
3370 | /* EV_STAT 0x00001000 /* stat data changed */ |
1112 | ev_check_init (&cw, gcb); |
3371 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
1113 | ev_check_start (&cw); |
|
|
1114 | |
|
|
1115 | struct ev_idle iw; |
|
|
1116 | ev_idle_init (&iw, gcb); |
|
|
1117 | ev_idle_start (&iw); |
|
|
1118 | |
|
|
1119 | ev_loop (0); |
|
|
1120 | |
|
|
1121 | return 0; |
|
|
1122 | } |
3372 | } |
1123 | |
|
|
1124 | #endif |
3373 | #endif |
1125 | |
3374 | |
|
|
3375 | #if EV_MULTIPLICITY |
|
|
3376 | #include "ev_wrap.h" |
|
|
3377 | #endif |
1126 | |
3378 | |
|
|
3379 | #ifdef __cplusplus |
|
|
3380 | } |
|
|
3381 | #endif |
1127 | |
3382 | |
1128 | |
|
|