1 | #include <math.h> |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
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4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without modifica- |
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8 | * tion, are permitted provided that the following conditions are met: |
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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. |
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27 | * |
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28 | * Alternatively, the contents of this file may be used under the terms of |
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29 | * the GNU General Public License ("GPL") version 2 or any later version, |
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30 | * in which case the provisions of the GPL are applicable instead of |
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31 | * the above. If you wish to allow the use of your version of this file |
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32 | * only under the terms of the GPL and not to allow others to use your |
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33 | * version of this file under the BSD license, indicate your decision |
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34 | * by deleting the provisions above and replace them with the notice |
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35 | * and other provisions required by the GPL. If you do not delete the |
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36 | * provisions above, a recipient may use your version of this file under |
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37 | * either the BSD or the GPL. |
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38 | */ |
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39 | |
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40 | /* this big block deduces configuration from config.h */ |
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41 | #ifndef EV_STANDALONE |
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42 | # ifdef EV_CONFIG_H |
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43 | # include EV_CONFIG_H |
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44 | # else |
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45 | # include "config.h" |
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46 | # endif |
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47 | |
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48 | # if HAVE_FLOOR |
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49 | # ifndef EV_USE_FLOOR |
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50 | # define EV_USE_FLOOR 1 |
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51 | # endif |
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52 | # endif |
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53 | |
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54 | # if HAVE_CLOCK_SYSCALL |
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55 | # ifndef EV_USE_CLOCK_SYSCALL |
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56 | # define EV_USE_CLOCK_SYSCALL 1 |
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57 | # ifndef EV_USE_REALTIME |
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58 | # define EV_USE_REALTIME 0 |
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59 | # endif |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 1 |
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62 | # endif |
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63 | # endif |
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64 | # elif !defined EV_USE_CLOCK_SYSCALL |
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65 | # define EV_USE_CLOCK_SYSCALL 0 |
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66 | # endif |
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67 | |
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68 | # if HAVE_CLOCK_GETTIME |
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69 | # ifndef EV_USE_MONOTONIC |
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70 | # define EV_USE_MONOTONIC 1 |
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71 | # endif |
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72 | # ifndef EV_USE_REALTIME |
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73 | # define EV_USE_REALTIME 0 |
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74 | # endif |
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75 | # else |
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76 | # ifndef EV_USE_MONOTONIC |
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77 | # define EV_USE_MONOTONIC 0 |
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78 | # endif |
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79 | # ifndef EV_USE_REALTIME |
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80 | # define EV_USE_REALTIME 0 |
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81 | # endif |
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82 | # endif |
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83 | |
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84 | # if HAVE_NANOSLEEP |
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85 | # ifndef EV_USE_NANOSLEEP |
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86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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87 | # endif |
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88 | # else |
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89 | # undef EV_USE_NANOSLEEP |
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90 | # define EV_USE_NANOSLEEP 0 |
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91 | # endif |
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92 | |
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93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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94 | # ifndef EV_USE_SELECT |
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95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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96 | # endif |
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97 | # else |
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98 | # undef EV_USE_SELECT |
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99 | # define EV_USE_SELECT 0 |
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100 | # endif |
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101 | |
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102 | # if HAVE_POLL && HAVE_POLL_H |
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103 | # ifndef EV_USE_POLL |
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104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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105 | # endif |
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106 | # else |
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107 | # undef EV_USE_POLL |
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108 | # define EV_USE_POLL 0 |
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109 | # endif |
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110 | |
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111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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112 | # ifndef EV_USE_EPOLL |
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113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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114 | # endif |
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115 | # else |
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116 | # undef EV_USE_EPOLL |
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117 | # define EV_USE_EPOLL 0 |
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118 | # endif |
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119 | |
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120 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
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121 | # ifndef EV_USE_KQUEUE |
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122 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
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123 | # endif |
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124 | # else |
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125 | # undef EV_USE_KQUEUE |
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126 | # define EV_USE_KQUEUE 0 |
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127 | # endif |
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128 | |
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129 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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130 | # ifndef EV_USE_PORT |
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131 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
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132 | # endif |
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133 | # else |
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134 | # undef EV_USE_PORT |
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135 | # define EV_USE_PORT 0 |
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136 | # endif |
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137 | |
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138 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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139 | # ifndef EV_USE_INOTIFY |
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140 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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141 | # endif |
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142 | # else |
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143 | # undef EV_USE_INOTIFY |
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144 | # define EV_USE_INOTIFY 0 |
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145 | # endif |
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146 | |
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147 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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148 | # ifndef EV_USE_SIGNALFD |
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149 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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150 | # endif |
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151 | # else |
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152 | # undef EV_USE_SIGNALFD |
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153 | # define EV_USE_SIGNALFD 0 |
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154 | # endif |
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155 | |
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156 | # if HAVE_EVENTFD |
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157 | # ifndef EV_USE_EVENTFD |
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158 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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159 | # endif |
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160 | # else |
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161 | # undef EV_USE_EVENTFD |
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162 | # define EV_USE_EVENTFD 0 |
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163 | # endif |
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164 | |
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165 | #endif |
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166 | |
2 | #include <stdlib.h> |
167 | #include <stdlib.h> |
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168 | #include <string.h> |
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169 | #include <fcntl.h> |
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170 | #include <stddef.h> |
3 | |
171 | |
4 | #include <stdio.h> |
172 | #include <stdio.h> |
5 | |
173 | |
6 | #include <assert.h> |
174 | #include <assert.h> |
7 | #include <errno.h> |
175 | #include <errno.h> |
8 | #include <sys/time.h> |
176 | #include <sys/types.h> |
9 | #include <time.h> |
177 | #include <time.h> |
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178 | #include <limits.h> |
10 | |
179 | |
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180 | #include <signal.h> |
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181 | |
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182 | #ifdef EV_H |
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183 | # include EV_H |
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184 | #else |
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185 | # include "ev.h" |
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186 | #endif |
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187 | |
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188 | #if EV_NO_THREADS |
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189 | # undef EV_NO_SMP |
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190 | # define EV_NO_SMP 1 |
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191 | # undef ECB_NO_THREADS |
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192 | # define ECB_NO_THREADS 1 |
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193 | #endif |
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194 | #if EV_NO_SMP |
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195 | # undef EV_NO_SMP |
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196 | # define ECB_NO_SMP 1 |
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197 | #endif |
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198 | |
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199 | #ifndef _WIN32 |
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200 | # include <sys/time.h> |
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201 | # include <sys/wait.h> |
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202 | # include <unistd.h> |
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203 | #else |
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204 | # include <io.h> |
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205 | # define WIN32_LEAN_AND_MEAN |
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206 | # include <winsock2.h> |
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207 | # include <windows.h> |
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208 | # ifndef EV_SELECT_IS_WINSOCKET |
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209 | # define EV_SELECT_IS_WINSOCKET 1 |
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210 | # endif |
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211 | # undef EV_AVOID_STDIO |
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212 | #endif |
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213 | |
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214 | /* OS X, in its infinite idiocy, actually HARDCODES |
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215 | * a limit of 1024 into their select. Where people have brains, |
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216 | * OS X engineers apparently have a vacuum. Or maybe they were |
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217 | * ordered to have a vacuum, or they do anything for money. |
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218 | * This might help. Or not. |
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219 | */ |
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220 | #define _DARWIN_UNLIMITED_SELECT 1 |
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221 | |
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222 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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223 | |
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224 | /* try to deduce the maximum number of signals on this platform */ |
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225 | #if defined EV_NSIG |
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226 | /* use what's provided */ |
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227 | #elif defined NSIG |
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228 | # define EV_NSIG (NSIG) |
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229 | #elif defined _NSIG |
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230 | # define EV_NSIG (_NSIG) |
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231 | #elif defined SIGMAX |
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232 | # define EV_NSIG (SIGMAX+1) |
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233 | #elif defined SIG_MAX |
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234 | # define EV_NSIG (SIG_MAX+1) |
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235 | #elif defined _SIG_MAX |
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236 | # define EV_NSIG (_SIG_MAX+1) |
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237 | #elif defined MAXSIG |
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238 | # define EV_NSIG (MAXSIG+1) |
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239 | #elif defined MAX_SIG |
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240 | # define EV_NSIG (MAX_SIG+1) |
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241 | #elif defined SIGARRAYSIZE |
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242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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243 | #elif defined _sys_nsig |
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244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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245 | #else |
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246 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
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247 | #endif |
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248 | |
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249 | #ifndef EV_USE_FLOOR |
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250 | # define EV_USE_FLOOR 0 |
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251 | #endif |
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252 | |
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253 | #ifndef EV_USE_CLOCK_SYSCALL |
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254 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
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255 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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256 | # else |
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257 | # define EV_USE_CLOCK_SYSCALL 0 |
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258 | # endif |
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259 | #endif |
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260 | |
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261 | #if !(_POSIX_TIMERS > 0) |
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262 | # ifndef EV_USE_MONOTONIC |
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263 | # define EV_USE_MONOTONIC 0 |
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264 | # endif |
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265 | # ifndef EV_USE_REALTIME |
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266 | # define EV_USE_REALTIME 0 |
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267 | # endif |
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268 | #endif |
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269 | |
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270 | #ifndef EV_USE_MONOTONIC |
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271 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
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272 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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273 | # else |
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274 | # define EV_USE_MONOTONIC 0 |
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275 | # endif |
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276 | #endif |
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277 | |
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278 | #ifndef EV_USE_REALTIME |
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279 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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280 | #endif |
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281 | |
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282 | #ifndef EV_USE_NANOSLEEP |
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283 | # if _POSIX_C_SOURCE >= 199309L |
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284 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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285 | # else |
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286 | # define EV_USE_NANOSLEEP 0 |
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287 | # endif |
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288 | #endif |
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289 | |
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290 | #ifndef EV_USE_SELECT |
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291 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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292 | #endif |
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293 | |
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294 | #ifndef EV_USE_POLL |
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295 | # ifdef _WIN32 |
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296 | # define EV_USE_POLL 0 |
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297 | # else |
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298 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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299 | # endif |
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300 | #endif |
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301 | |
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302 | #ifndef EV_USE_EPOLL |
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303 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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304 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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305 | # else |
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306 | # define EV_USE_EPOLL 0 |
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307 | # endif |
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308 | #endif |
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309 | |
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310 | #ifndef EV_USE_KQUEUE |
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311 | # define EV_USE_KQUEUE 0 |
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312 | #endif |
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313 | |
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314 | #ifndef EV_USE_PORT |
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315 | # define EV_USE_PORT 0 |
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316 | #endif |
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317 | |
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318 | #ifndef EV_USE_INOTIFY |
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319 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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320 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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321 | # else |
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322 | # define EV_USE_INOTIFY 0 |
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323 | # endif |
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324 | #endif |
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325 | |
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326 | #ifndef EV_PID_HASHSIZE |
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327 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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328 | #endif |
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329 | |
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330 | #ifndef EV_INOTIFY_HASHSIZE |
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331 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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332 | #endif |
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333 | |
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334 | #ifndef EV_USE_EVENTFD |
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335 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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336 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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337 | # else |
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338 | # define EV_USE_EVENTFD 0 |
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339 | # endif |
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340 | #endif |
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341 | |
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342 | #ifndef EV_USE_SIGNALFD |
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343 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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344 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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345 | # else |
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346 | # define EV_USE_SIGNALFD 0 |
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347 | # endif |
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348 | #endif |
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349 | |
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350 | #if 0 /* debugging */ |
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351 | # define EV_VERIFY 3 |
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352 | # define EV_USE_4HEAP 1 |
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353 | # define EV_HEAP_CACHE_AT 1 |
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354 | #endif |
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355 | |
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356 | #ifndef EV_VERIFY |
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357 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
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358 | #endif |
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359 | |
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360 | #ifndef EV_USE_4HEAP |
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361 | # define EV_USE_4HEAP EV_FEATURE_DATA |
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362 | #endif |
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363 | |
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364 | #ifndef EV_HEAP_CACHE_AT |
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365 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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366 | #endif |
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367 | |
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368 | #ifdef __ANDROID__ |
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369 | /* supposedly, android doesn't typedef fd_mask */ |
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370 | # undef EV_USE_SELECT |
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371 | # define EV_USE_SELECT 0 |
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372 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
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373 | # undef EV_USE_CLOCK_SYSCALL |
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374 | # define EV_USE_CLOCK_SYSCALL 0 |
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375 | #endif |
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376 | |
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377 | /* aix's poll.h seems to cause lots of trouble */ |
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378 | #ifdef _AIX |
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379 | /* AIX has a completely broken poll.h header */ |
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380 | # undef EV_USE_POLL |
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381 | # define EV_USE_POLL 0 |
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382 | #endif |
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383 | |
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384 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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385 | /* which makes programs even slower. might work on other unices, too. */ |
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386 | #if EV_USE_CLOCK_SYSCALL |
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387 | # include <sys/syscall.h> |
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388 | # ifdef SYS_clock_gettime |
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389 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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390 | # undef EV_USE_MONOTONIC |
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391 | # define EV_USE_MONOTONIC 1 |
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392 | # else |
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393 | # undef EV_USE_CLOCK_SYSCALL |
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394 | # define EV_USE_CLOCK_SYSCALL 0 |
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395 | # endif |
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396 | #endif |
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397 | |
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398 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
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399 | |
11 | #ifdef CLOCK_MONOTONIC |
400 | #ifndef CLOCK_MONOTONIC |
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401 | # undef EV_USE_MONOTONIC |
12 | # define HAVE_MONOTONIC 1 |
402 | # define EV_USE_MONOTONIC 0 |
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403 | #endif |
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404 | |
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405 | #ifndef CLOCK_REALTIME |
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406 | # undef EV_USE_REALTIME |
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407 | # define EV_USE_REALTIME 0 |
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408 | #endif |
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409 | |
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410 | #if !EV_STAT_ENABLE |
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411 | # undef EV_USE_INOTIFY |
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412 | # define EV_USE_INOTIFY 0 |
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413 | #endif |
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414 | |
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415 | #if !EV_USE_NANOSLEEP |
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416 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
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417 | # if !defined _WIN32 && !defined __hpux |
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418 | # include <sys/select.h> |
13 | #endif |
419 | # endif |
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420 | #endif |
14 | |
421 | |
15 | #define HAVE_EPOLL 1 |
422 | #if EV_USE_INOTIFY |
16 | #define HAVE_REALTIME 1 |
423 | # include <sys/statfs.h> |
17 | #define HAVE_SELECT 1 |
424 | # include <sys/inotify.h> |
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425 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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426 | # ifndef IN_DONT_FOLLOW |
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427 | # undef EV_USE_INOTIFY |
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428 | # define EV_USE_INOTIFY 0 |
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429 | # endif |
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430 | #endif |
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431 | |
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432 | #if EV_USE_EVENTFD |
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433 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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434 | # include <stdint.h> |
|
|
435 | # ifndef EFD_NONBLOCK |
|
|
436 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
437 | # endif |
|
|
438 | # ifndef EFD_CLOEXEC |
|
|
439 | # ifdef O_CLOEXEC |
|
|
440 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
441 | # else |
|
|
442 | # define EFD_CLOEXEC 02000000 |
|
|
443 | # endif |
|
|
444 | # endif |
|
|
445 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
446 | #endif |
|
|
447 | |
|
|
448 | #if EV_USE_SIGNALFD |
|
|
449 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
450 | # include <stdint.h> |
|
|
451 | # ifndef SFD_NONBLOCK |
|
|
452 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
453 | # endif |
|
|
454 | # ifndef SFD_CLOEXEC |
|
|
455 | # ifdef O_CLOEXEC |
|
|
456 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
457 | # else |
|
|
458 | # define SFD_CLOEXEC 02000000 |
|
|
459 | # endif |
|
|
460 | # endif |
|
|
461 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
462 | |
|
|
463 | struct signalfd_siginfo |
|
|
464 | { |
|
|
465 | uint32_t ssi_signo; |
|
|
466 | char pad[128 - sizeof (uint32_t)]; |
|
|
467 | }; |
|
|
468 | #endif |
|
|
469 | |
|
|
470 | /**/ |
|
|
471 | |
|
|
472 | #if EV_VERIFY >= 3 |
|
|
473 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
474 | #else |
|
|
475 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
476 | #endif |
|
|
477 | |
|
|
478 | /* |
|
|
479 | * This is used to work around floating point rounding problems. |
|
|
480 | * This value is good at least till the year 4000. |
|
|
481 | */ |
|
|
482 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
483 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
18 | |
484 | |
19 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
485 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
20 | #define MAX_BLOCKTIME 60. |
486 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
21 | |
487 | |
|
|
488 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
489 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
490 | |
|
|
491 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
492 | /* ECB.H BEGIN */ |
|
|
493 | /* |
|
|
494 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
495 | * |
|
|
496 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
497 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
498 | * All rights reserved. |
|
|
499 | * |
|
|
500 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
501 | * tion, are permitted provided that the following conditions are met: |
|
|
502 | * |
|
|
503 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
504 | * this list of conditions and the following disclaimer. |
|
|
505 | * |
|
|
506 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
507 | * notice, this list of conditions and the following disclaimer in the |
|
|
508 | * documentation and/or other materials provided with the distribution. |
|
|
509 | * |
|
|
510 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
511 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
512 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
513 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
514 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
515 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
516 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
517 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
518 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
519 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
520 | * |
|
|
521 | * Alternatively, the contents of this file may be used under the terms of |
|
|
522 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
523 | * in which case the provisions of the GPL are applicable instead of |
|
|
524 | * the above. If you wish to allow the use of your version of this file |
|
|
525 | * only under the terms of the GPL and not to allow others to use your |
|
|
526 | * version of this file under the BSD license, indicate your decision |
|
|
527 | * by deleting the provisions above and replace them with the notice |
|
|
528 | * and other provisions required by the GPL. If you do not delete the |
|
|
529 | * provisions above, a recipient may use your version of this file under |
|
|
530 | * either the BSD or the GPL. |
|
|
531 | */ |
|
|
532 | |
|
|
533 | #ifndef ECB_H |
|
|
534 | #define ECB_H |
|
|
535 | |
|
|
536 | /* 16 bits major, 16 bits minor */ |
|
|
537 | #define ECB_VERSION 0x00010005 |
|
|
538 | |
|
|
539 | #ifdef _WIN32 |
|
|
540 | typedef signed char int8_t; |
|
|
541 | typedef unsigned char uint8_t; |
|
|
542 | typedef signed short int16_t; |
|
|
543 | typedef unsigned short uint16_t; |
|
|
544 | typedef signed int int32_t; |
|
|
545 | typedef unsigned int uint32_t; |
|
|
546 | #if __GNUC__ |
|
|
547 | typedef signed long long int64_t; |
|
|
548 | typedef unsigned long long uint64_t; |
|
|
549 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
550 | typedef signed __int64 int64_t; |
|
|
551 | typedef unsigned __int64 uint64_t; |
|
|
552 | #endif |
|
|
553 | #ifdef _WIN64 |
|
|
554 | #define ECB_PTRSIZE 8 |
|
|
555 | typedef uint64_t uintptr_t; |
|
|
556 | typedef int64_t intptr_t; |
|
|
557 | #else |
|
|
558 | #define ECB_PTRSIZE 4 |
|
|
559 | typedef uint32_t uintptr_t; |
|
|
560 | typedef int32_t intptr_t; |
|
|
561 | #endif |
|
|
562 | #else |
|
|
563 | #include <inttypes.h> |
|
|
564 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
|
|
565 | #define ECB_PTRSIZE 8 |
|
|
566 | #else |
|
|
567 | #define ECB_PTRSIZE 4 |
|
|
568 | #endif |
|
|
569 | #endif |
|
|
570 | |
|
|
571 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
|
|
572 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
|
|
573 | |
|
|
574 | /* work around x32 idiocy by defining proper macros */ |
|
|
575 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
576 | #if _ILP32 |
|
|
577 | #define ECB_AMD64_X32 1 |
|
|
578 | #else |
|
|
579 | #define ECB_AMD64 1 |
|
|
580 | #endif |
|
|
581 | #endif |
|
|
582 | |
|
|
583 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
584 | * what their idiot authors think are the "more important" extensions, |
|
|
585 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
586 | * or so. |
|
|
587 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
588 | * an issue with that they should have done it right in the first place. |
|
|
589 | */ |
|
|
590 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
591 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
592 | #else |
|
|
593 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
594 | #endif |
|
|
595 | |
|
|
596 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
|
|
597 | |
|
|
598 | #if __clang__ && defined __has_builtin |
|
|
599 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
|
|
600 | #else |
|
|
601 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
602 | #endif |
|
|
603 | |
|
|
604 | #if __clang__ && defined __has_extension |
|
|
605 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
606 | #else |
|
|
607 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
608 | #endif |
|
|
609 | |
|
|
610 | #define ECB_CPP (__cplusplus+0) |
|
|
611 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
612 | |
|
|
613 | #if ECB_CPP |
|
|
614 | #define ECB_C 0 |
|
|
615 | #define ECB_STDC_VERSION 0 |
|
|
616 | #else |
|
|
617 | #define ECB_C 1 |
|
|
618 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
619 | #endif |
|
|
620 | |
|
|
621 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
622 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
623 | |
|
|
624 | #if ECB_CPP |
|
|
625 | #define ECB_EXTERN_C extern "C" |
|
|
626 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
627 | #define ECB_EXTERN_C_END } |
|
|
628 | #else |
|
|
629 | #define ECB_EXTERN_C extern |
|
|
630 | #define ECB_EXTERN_C_BEG |
|
|
631 | #define ECB_EXTERN_C_END |
|
|
632 | #endif |
|
|
633 | |
|
|
634 | /*****************************************************************************/ |
|
|
635 | |
|
|
636 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
637 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
638 | |
|
|
639 | #if ECB_NO_THREADS |
|
|
640 | #define ECB_NO_SMP 1 |
|
|
641 | #endif |
|
|
642 | |
|
|
643 | #if ECB_NO_SMP |
|
|
644 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
645 | #endif |
|
|
646 | |
|
|
647 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
|
|
648 | #if __xlC__ && ECB_CPP |
|
|
649 | #include <builtins.h> |
|
|
650 | #endif |
|
|
651 | |
|
|
652 | #if 1400 <= _MSC_VER |
|
|
653 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
|
|
654 | #endif |
|
|
655 | |
|
|
656 | #ifndef ECB_MEMORY_FENCE |
|
|
657 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
658 | #if __i386 || __i386__ |
|
|
659 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
660 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
661 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
662 | #elif ECB_GCC_AMD64 |
|
|
663 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
664 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
665 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
666 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
667 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
668 | #elif defined __ARM_ARCH_2__ \ |
|
|
669 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
|
|
670 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
|
|
671 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
|
|
672 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
|
|
673 | || defined __ARM_ARCH_5TEJ__ |
|
|
674 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
|
|
675 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
676 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
|
|
677 | || defined __ARM_ARCH_6T2__ |
|
|
678 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
679 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
680 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
|
|
681 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
682 | #elif __aarch64__ |
|
|
683 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
684 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
|
|
685 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
686 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
687 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
688 | #elif defined __s390__ || defined __s390x__ |
|
|
689 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
690 | #elif defined __mips__ |
|
|
691 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
692 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
693 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
694 | #elif defined __alpha__ |
|
|
695 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
696 | #elif defined __hppa__ |
|
|
697 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
698 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
699 | #elif defined __ia64__ |
|
|
700 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
701 | #elif defined __m68k__ |
|
|
702 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
703 | #elif defined __m88k__ |
|
|
704 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
705 | #elif defined __sh__ |
|
|
706 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
707 | #endif |
|
|
708 | #endif |
|
|
709 | #endif |
|
|
710 | |
|
|
711 | #ifndef ECB_MEMORY_FENCE |
|
|
712 | #if ECB_GCC_VERSION(4,7) |
|
|
713 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
714 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
715 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
716 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
717 | |
|
|
718 | #elif ECB_CLANG_EXTENSION(c_atomic) |
|
|
719 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
720 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
721 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
722 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
723 | |
|
|
724 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
725 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
726 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
727 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
728 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
729 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
730 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
731 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
732 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
733 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
734 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
735 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
736 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
737 | #elif defined _WIN32 |
|
|
738 | #include <WinNT.h> |
|
|
739 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
740 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
741 | #include <mbarrier.h> |
|
|
742 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
743 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
744 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
745 | #elif __xlC__ |
|
|
746 | #define ECB_MEMORY_FENCE __sync () |
|
|
747 | #endif |
|
|
748 | #endif |
|
|
749 | |
|
|
750 | #ifndef ECB_MEMORY_FENCE |
|
|
751 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
752 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
753 | /* not just C11 atomics and atomic accesses */ |
|
|
754 | #include <stdatomic.h> |
|
|
755 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
756 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
757 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
758 | /* for most usages, or gcc and clang have a bug */ |
|
|
759 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
760 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
761 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
762 | /* for all __atomic_thread_fence's except seq_cst */ |
|
|
763 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
764 | #endif |
|
|
765 | #endif |
|
|
766 | |
|
|
767 | #ifndef ECB_MEMORY_FENCE |
|
|
768 | #if !ECB_AVOID_PTHREADS |
|
|
769 | /* |
|
|
770 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
771 | * or failure to find pthread.h, then you should implement |
|
|
772 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
773 | * OR provide pthread.h and link against the posix thread library |
|
|
774 | * of your system. |
|
|
775 | */ |
|
|
776 | #include <pthread.h> |
|
|
777 | #define ECB_NEEDS_PTHREADS 1 |
|
|
778 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
779 | |
|
|
780 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
781 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
782 | #endif |
|
|
783 | #endif |
|
|
784 | |
|
|
785 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
786 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
787 | #endif |
|
|
788 | |
|
|
789 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
790 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
791 | #endif |
|
|
792 | |
|
|
793 | /*****************************************************************************/ |
|
|
794 | |
|
|
795 | #if ECB_CPP |
|
|
796 | #define ecb_inline static inline |
|
|
797 | #elif ECB_GCC_VERSION(2,5) |
|
|
798 | #define ecb_inline static __inline__ |
|
|
799 | #elif ECB_C99 |
|
|
800 | #define ecb_inline static inline |
|
|
801 | #else |
|
|
802 | #define ecb_inline static |
|
|
803 | #endif |
|
|
804 | |
|
|
805 | #if ECB_GCC_VERSION(3,3) |
|
|
806 | #define ecb_restrict __restrict__ |
|
|
807 | #elif ECB_C99 |
|
|
808 | #define ecb_restrict restrict |
|
|
809 | #else |
|
|
810 | #define ecb_restrict |
|
|
811 | #endif |
|
|
812 | |
|
|
813 | typedef int ecb_bool; |
|
|
814 | |
|
|
815 | #define ECB_CONCAT_(a, b) a ## b |
|
|
816 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
817 | #define ECB_STRINGIFY_(a) # a |
|
|
818 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
819 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
|
|
820 | |
|
|
821 | #define ecb_function_ ecb_inline |
|
|
822 | |
|
|
823 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
|
|
824 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
|
|
825 | #else |
|
|
826 | #define ecb_attribute(attrlist) |
|
|
827 | #endif |
|
|
828 | |
|
|
829 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
|
|
830 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
831 | #else |
|
|
832 | /* possible C11 impl for integral types |
|
|
833 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
834 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
835 | |
|
|
836 | #define ecb_is_constant(expr) 0 |
|
|
837 | #endif |
|
|
838 | |
|
|
839 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
|
|
840 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
841 | #else |
|
|
842 | #define ecb_expect(expr,value) (expr) |
|
|
843 | #endif |
|
|
844 | |
|
|
845 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
|
|
846 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
847 | #else |
|
|
848 | #define ecb_prefetch(addr,rw,locality) |
|
|
849 | #endif |
|
|
850 | |
|
|
851 | /* no emulation for ecb_decltype */ |
|
|
852 | #if ECB_CPP11 |
|
|
853 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
854 | template<class T> struct ecb_decltype_t { typedef T type; }; |
|
|
855 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
|
|
856 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
|
|
857 | #define ecb_decltype(x) __typeof__ (x) |
|
|
858 | #endif |
|
|
859 | |
|
|
860 | #if _MSC_VER >= 1300 |
|
|
861 | #define ecb_deprecated __declspec (deprecated) |
|
|
862 | #else |
|
|
863 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
864 | #endif |
|
|
865 | |
|
|
866 | #if _MSC_VER >= 1500 |
|
|
867 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
868 | #elif ECB_GCC_VERSION(4,5) |
|
|
869 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
870 | #else |
|
|
871 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
872 | #endif |
|
|
873 | |
|
|
874 | #if _MSC_VER >= 1400 |
|
|
875 | #define ecb_noinline __declspec (noinline) |
|
|
876 | #else |
|
|
877 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
881 | #define ecb_const ecb_attribute ((__const__)) |
|
|
882 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
883 | |
|
|
884 | #if ECB_C11 || __IBMC_NORETURN |
|
|
885 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
|
|
886 | #define ecb_noreturn _Noreturn |
|
|
887 | #elif ECB_CPP11 |
|
|
888 | #define ecb_noreturn [[noreturn]] |
|
|
889 | #elif _MSC_VER >= 1200 |
|
|
890 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
|
|
891 | #define ecb_noreturn __declspec (noreturn) |
|
|
892 | #else |
|
|
893 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
894 | #endif |
|
|
895 | |
|
|
896 | #if ECB_GCC_VERSION(4,3) |
|
|
897 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
898 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
899 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
900 | #else |
|
|
901 | #define ecb_artificial |
|
|
902 | #define ecb_hot |
|
|
903 | #define ecb_cold |
|
|
904 | #endif |
|
|
905 | |
|
|
906 | /* put around conditional expressions if you are very sure that the */ |
|
|
907 | /* expression is mostly true or mostly false. note that these return */ |
|
|
908 | /* booleans, not the expression. */ |
|
|
909 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
|
|
910 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
911 | /* for compatibility to the rest of the world */ |
|
|
912 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
913 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
914 | |
|
|
915 | /* count trailing zero bits and count # of one bits */ |
|
|
916 | #if ECB_GCC_VERSION(3,4) \ |
|
|
917 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
918 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
919 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
|
|
920 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
921 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
922 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
923 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
924 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
925 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
926 | /* no popcountll */ |
|
|
927 | #else |
|
|
928 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
|
|
929 | ecb_function_ ecb_const int |
|
|
930 | ecb_ctz32 (uint32_t x) |
|
|
931 | { |
|
|
932 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
933 | unsigned long r; |
|
|
934 | _BitScanForward (&r, x); |
|
|
935 | return (int)r; |
|
|
936 | #else |
|
|
937 | int r = 0; |
|
|
938 | |
|
|
939 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
940 | |
|
|
941 | #if ECB_branchless_on_i386 |
|
|
942 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
943 | r += !!(x & 0xcccccccc) << 1; |
|
|
944 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
945 | r += !!(x & 0xff00ff00) << 3; |
|
|
946 | r += !!(x & 0xffff0000) << 4; |
|
|
947 | #else |
|
|
948 | if (x & 0xaaaaaaaa) r += 1; |
|
|
949 | if (x & 0xcccccccc) r += 2; |
|
|
950 | if (x & 0xf0f0f0f0) r += 4; |
|
|
951 | if (x & 0xff00ff00) r += 8; |
|
|
952 | if (x & 0xffff0000) r += 16; |
|
|
953 | #endif |
|
|
954 | |
|
|
955 | return r; |
|
|
956 | #endif |
|
|
957 | } |
|
|
958 | |
|
|
959 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
|
|
960 | ecb_function_ ecb_const int |
|
|
961 | ecb_ctz64 (uint64_t x) |
|
|
962 | { |
|
|
963 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
964 | unsigned long r; |
|
|
965 | _BitScanForward64 (&r, x); |
|
|
966 | return (int)r; |
|
|
967 | #else |
|
|
968 | int shift = x & 0xffffffff ? 0 : 32; |
|
|
969 | return ecb_ctz32 (x >> shift) + shift; |
|
|
970 | #endif |
|
|
971 | } |
|
|
972 | |
|
|
973 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
|
|
974 | ecb_function_ ecb_const int |
|
|
975 | ecb_popcount32 (uint32_t x) |
|
|
976 | { |
|
|
977 | x -= (x >> 1) & 0x55555555; |
|
|
978 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
979 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
980 | x *= 0x01010101; |
|
|
981 | |
|
|
982 | return x >> 24; |
|
|
983 | } |
|
|
984 | |
|
|
985 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
|
|
986 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
|
|
987 | { |
|
|
988 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
989 | unsigned long r; |
|
|
990 | _BitScanReverse (&r, x); |
|
|
991 | return (int)r; |
|
|
992 | #else |
|
|
993 | int r = 0; |
|
|
994 | |
|
|
995 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
996 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
997 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
998 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
999 | if (x >> 1) { r += 1; } |
|
|
1000 | |
|
|
1001 | return r; |
|
|
1002 | #endif |
|
|
1003 | } |
|
|
1004 | |
|
|
1005 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
|
|
1006 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
|
|
1007 | { |
|
|
1008 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1009 | unsigned long r; |
|
|
1010 | _BitScanReverse64 (&r, x); |
|
|
1011 | return (int)r; |
|
|
1012 | #else |
|
|
1013 | int r = 0; |
|
|
1014 | |
|
|
1015 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
1016 | |
|
|
1017 | return r + ecb_ld32 (x); |
|
|
1018 | #endif |
|
|
1019 | } |
|
|
1020 | #endif |
|
|
1021 | |
|
|
1022 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
|
|
1023 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
1024 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
|
|
1025 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
1026 | |
|
|
1027 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
|
|
1028 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
|
|
1029 | { |
|
|
1030 | return ( (x * 0x0802U & 0x22110U) |
|
|
1031 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
|
|
1035 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
|
|
1036 | { |
|
|
1037 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
1038 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
1039 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
1040 | x = ( x >> 8 ) | ( x << 8); |
|
|
1041 | |
|
|
1042 | return x; |
|
|
1043 | } |
|
|
1044 | |
|
|
1045 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
|
|
1046 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
|
|
1047 | { |
|
|
1048 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
1049 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
1050 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
1051 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
1052 | x = ( x >> 16 ) | ( x << 16); |
|
|
1053 | |
|
|
1054 | return x; |
|
|
1055 | } |
|
|
1056 | |
|
|
1057 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
1058 | /* so for this version we are lazy */ |
|
|
1059 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
|
|
1060 | ecb_function_ ecb_const int |
|
|
1061 | ecb_popcount64 (uint64_t x) |
|
|
1062 | { |
|
|
1063 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
|
|
1067 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
|
|
1068 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
|
|
1069 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
|
|
1070 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
|
|
1071 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
|
|
1072 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
|
|
1073 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
|
|
1074 | |
|
|
1075 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
1076 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
1077 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
1078 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
1079 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
1080 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
1081 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
1082 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
1083 | |
|
|
1084 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
|
|
1085 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
|
|
1086 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
|
|
1087 | #else |
|
|
1088 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1089 | #endif |
|
|
1090 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
1091 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
1092 | #elif _MSC_VER |
|
|
1093 | #include <stdlib.h> |
|
|
1094 | #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) |
|
|
1095 | #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) |
|
|
1096 | #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) |
|
|
1097 | #else |
|
|
1098 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
|
|
1099 | ecb_function_ ecb_const uint16_t |
|
|
1100 | ecb_bswap16 (uint16_t x) |
|
|
1101 | { |
|
|
1102 | return ecb_rotl16 (x, 8); |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
|
|
1106 | ecb_function_ ecb_const uint32_t |
|
|
1107 | ecb_bswap32 (uint32_t x) |
|
|
1108 | { |
|
|
1109 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
|
|
1113 | ecb_function_ ecb_const uint64_t |
|
|
1114 | ecb_bswap64 (uint64_t x) |
|
|
1115 | { |
|
|
1116 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
1117 | } |
|
|
1118 | #endif |
|
|
1119 | |
|
|
1120 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
|
|
1121 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1122 | #else |
|
|
1123 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1124 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
|
|
1125 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
|
|
1126 | #endif |
|
|
1127 | |
|
|
1128 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1129 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1130 | |
|
|
1131 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
|
|
1132 | ecb_inline ecb_const uint32_t |
|
|
1133 | ecb_byteorder_helper (void) |
|
|
1134 | { |
|
|
1135 | /* the union code still generates code under pressure in gcc, */ |
|
|
1136 | /* but less than using pointers, and always seems to */ |
|
|
1137 | /* successfully return a constant. */ |
|
|
1138 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1139 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1140 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1141 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
1142 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
1143 | #define ECB_LITTLE_ENDIAN 1 |
|
|
1144 | return 0x44332211; |
|
|
1145 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
1146 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
1147 | #define ECB_BIG_ENDIAN 1 |
|
|
1148 | return 0x11223344; |
|
|
1149 | #else |
|
|
1150 | union |
|
|
1151 | { |
|
|
1152 | uint8_t c[4]; |
|
|
1153 | uint32_t u; |
|
|
1154 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
|
|
1155 | return u.u; |
|
|
1156 | #endif |
|
|
1157 | } |
|
|
1158 | |
|
|
1159 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
|
|
1160 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
|
|
1161 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
|
|
1162 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
1163 | |
|
|
1164 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1165 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1166 | #else |
|
|
1167 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1168 | #endif |
|
|
1169 | |
|
|
1170 | #if ECB_CPP |
|
|
1171 | template<typename T> |
|
|
1172 | static inline T ecb_div_rd (T val, T div) |
|
|
1173 | { |
|
|
1174 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1175 | } |
|
|
1176 | template<typename T> |
|
|
1177 | static inline T ecb_div_ru (T val, T div) |
|
|
1178 | { |
|
|
1179 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1180 | } |
|
|
1181 | #else |
|
|
1182 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1183 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1184 | #endif |
|
|
1185 | |
|
|
1186 | #if ecb_cplusplus_does_not_suck |
|
|
1187 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1188 | template<typename T, int N> |
|
|
1189 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1190 | { |
|
|
1191 | return N; |
|
|
1192 | } |
|
|
1193 | #else |
|
|
1194 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1195 | #endif |
|
|
1196 | |
|
|
1197 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
1198 | ecb_function_ ecb_const uint32_t |
|
|
1199 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
1200 | { |
|
|
1201 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
1202 | int e = (x >> 10) & 0x001f; |
|
|
1203 | unsigned int m = x & 0x03ff; |
|
|
1204 | |
|
|
1205 | if (ecb_expect_false (e == 31)) |
|
|
1206 | /* infinity or NaN */ |
|
|
1207 | e = 255 - (127 - 15); |
|
|
1208 | else if (ecb_expect_false (!e)) |
|
|
1209 | { |
|
|
1210 | if (ecb_expect_true (!m)) |
|
|
1211 | /* zero, handled by code below by forcing e to 0 */ |
|
|
1212 | e = 0 - (127 - 15); |
|
|
1213 | else |
|
|
1214 | { |
|
|
1215 | /* subnormal, renormalise */ |
|
|
1216 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
1217 | |
|
|
1218 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
1219 | e -= s - 1; |
|
|
1220 | } |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
1224 | e += 127 - 15; |
|
|
1225 | |
|
|
1226 | return s | (e << 23) | (m << (23 - 10)); |
|
|
1227 | } |
|
|
1228 | |
|
|
1229 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
1230 | ecb_function_ ecb_const uint16_t |
|
|
1231 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
1232 | { |
|
|
1233 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
1234 | unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
1235 | unsigned int m = x & 0x007fffff; |
|
|
1236 | |
|
|
1237 | x &= 0x7fffffff; |
|
|
1238 | |
|
|
1239 | /* if it's within range of binary16 normals, use fast path */ |
|
|
1240 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
1241 | { |
|
|
1242 | /* mantissa round-to-even */ |
|
|
1243 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
1244 | |
|
|
1245 | /* handle overflow */ |
|
|
1246 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
1247 | { |
|
|
1248 | m >>= 1; |
|
|
1249 | e += 1; |
|
|
1250 | } |
|
|
1251 | |
|
|
1252 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
1253 | } |
|
|
1254 | |
|
|
1255 | /* handle large numbers and infinity */ |
|
|
1256 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
1257 | return s | 0x7c00; |
|
|
1258 | |
|
|
1259 | /* handle zero, subnormals and small numbers */ |
|
|
1260 | if (ecb_expect_true (x < 0x38800000)) |
|
|
1261 | { |
|
|
1262 | /* zero */ |
|
|
1263 | if (ecb_expect_true (!x)) |
|
|
1264 | return s; |
|
|
1265 | |
|
|
1266 | /* handle subnormals */ |
|
|
1267 | |
|
|
1268 | /* too small, will be zero */ |
|
|
1269 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
1270 | return s; |
|
|
1271 | |
|
|
1272 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
1273 | |
|
|
1274 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
1275 | { |
|
|
1276 | unsigned int bits = 14 - e; |
|
|
1277 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
1278 | unsigned int even = (m >> bits) & 1; |
|
|
1279 | |
|
|
1280 | /* if this overflows, we will end up with a normalised number */ |
|
|
1281 | m = (m + half + even) >> bits; |
|
|
1282 | } |
|
|
1283 | |
|
|
1284 | return s | m; |
|
|
1285 | } |
|
|
1286 | |
|
|
1287 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
1288 | m >>= 13; |
|
|
1289 | |
|
|
1290 | return s | 0x7c00 | m | !m; |
|
|
1291 | } |
|
|
1292 | |
|
|
1293 | /*******************************************************************************/ |
|
|
1294 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1295 | |
|
|
1296 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1297 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1298 | #if 0 \ |
|
|
1299 | || __i386 || __i386__ \ |
|
|
1300 | || ECB_GCC_AMD64 \ |
|
|
1301 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1302 | || defined __s390__ || defined __s390x__ \ |
|
|
1303 | || defined __mips__ \ |
|
|
1304 | || defined __alpha__ \ |
|
|
1305 | || defined __hppa__ \ |
|
|
1306 | || defined __ia64__ \ |
|
|
1307 | || defined __m68k__ \ |
|
|
1308 | || defined __m88k__ \ |
|
|
1309 | || defined __sh__ \ |
|
|
1310 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1311 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1312 | || defined __aarch64__ |
|
|
1313 | #define ECB_STDFP 1 |
|
|
1314 | #include <string.h> /* for memcpy */ |
|
|
1315 | #else |
|
|
1316 | #define ECB_STDFP 0 |
|
|
1317 | #endif |
|
|
1318 | |
|
|
1319 | #ifndef ECB_NO_LIBM |
|
|
1320 | |
|
|
1321 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1322 | |
|
|
1323 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1324 | #ifdef INFINITY |
|
|
1325 | #define ECB_INFINITY INFINITY |
|
|
1326 | #else |
|
|
1327 | #define ECB_INFINITY HUGE_VAL |
|
|
1328 | #endif |
|
|
1329 | |
|
|
1330 | #ifdef NAN |
|
|
1331 | #define ECB_NAN NAN |
|
|
1332 | #else |
|
|
1333 | #define ECB_NAN ECB_INFINITY |
|
|
1334 | #endif |
|
|
1335 | |
|
|
1336 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1337 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1338 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1339 | #else |
|
|
1340 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1341 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1342 | #endif |
|
|
1343 | |
|
|
1344 | /* convert a float to ieee single/binary32 */ |
|
|
1345 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1346 | ecb_function_ ecb_const uint32_t |
|
|
1347 | ecb_float_to_binary32 (float x) |
|
|
1348 | { |
|
|
1349 | uint32_t r; |
|
|
1350 | |
|
|
1351 | #if ECB_STDFP |
|
|
1352 | memcpy (&r, &x, 4); |
|
|
1353 | #else |
|
|
1354 | /* slow emulation, works for anything but -0 */ |
|
|
1355 | uint32_t m; |
|
|
1356 | int e; |
|
|
1357 | |
|
|
1358 | if (x == 0e0f ) return 0x00000000U; |
|
|
1359 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1360 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1361 | if (x != x ) return 0x7fbfffffU; |
|
|
1362 | |
|
|
1363 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1364 | |
|
|
1365 | r = m & 0x80000000U; |
|
|
1366 | |
|
|
1367 | if (r) |
|
|
1368 | m = -m; |
|
|
1369 | |
|
|
1370 | if (e <= -126) |
|
|
1371 | { |
|
|
1372 | m &= 0xffffffU; |
|
|
1373 | m >>= (-125 - e); |
|
|
1374 | e = -126; |
|
|
1375 | } |
|
|
1376 | |
|
|
1377 | r |= (e + 126) << 23; |
|
|
1378 | r |= m & 0x7fffffU; |
|
|
1379 | #endif |
|
|
1380 | |
|
|
1381 | return r; |
|
|
1382 | } |
|
|
1383 | |
|
|
1384 | /* converts an ieee single/binary32 to a float */ |
|
|
1385 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1386 | ecb_function_ ecb_const float |
|
|
1387 | ecb_binary32_to_float (uint32_t x) |
|
|
1388 | { |
|
|
1389 | float r; |
|
|
1390 | |
|
|
1391 | #if ECB_STDFP |
|
|
1392 | memcpy (&r, &x, 4); |
|
|
1393 | #else |
|
|
1394 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1395 | int neg = x >> 31; |
|
|
1396 | int e = (x >> 23) & 0xffU; |
|
|
1397 | |
|
|
1398 | x &= 0x7fffffU; |
|
|
1399 | |
|
|
1400 | if (e) |
|
|
1401 | x |= 0x800000U; |
|
|
1402 | else |
|
|
1403 | e = 1; |
|
|
1404 | |
|
|
1405 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1406 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1407 | |
|
|
1408 | r = neg ? -r : r; |
|
|
1409 | #endif |
|
|
1410 | |
|
|
1411 | return r; |
|
|
1412 | } |
|
|
1413 | |
|
|
1414 | /* convert a double to ieee double/binary64 */ |
|
|
1415 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1416 | ecb_function_ ecb_const uint64_t |
|
|
1417 | ecb_double_to_binary64 (double x) |
|
|
1418 | { |
|
|
1419 | uint64_t r; |
|
|
1420 | |
|
|
1421 | #if ECB_STDFP |
|
|
1422 | memcpy (&r, &x, 8); |
|
|
1423 | #else |
|
|
1424 | /* slow emulation, works for anything but -0 */ |
|
|
1425 | uint64_t m; |
|
|
1426 | int e; |
|
|
1427 | |
|
|
1428 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1429 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1430 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1431 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1432 | |
|
|
1433 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1434 | |
|
|
1435 | r = m & 0x8000000000000000;; |
|
|
1436 | |
|
|
1437 | if (r) |
|
|
1438 | m = -m; |
|
|
1439 | |
|
|
1440 | if (e <= -1022) |
|
|
1441 | { |
|
|
1442 | m &= 0x1fffffffffffffU; |
|
|
1443 | m >>= (-1021 - e); |
|
|
1444 | e = -1022; |
|
|
1445 | } |
|
|
1446 | |
|
|
1447 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1448 | r |= m & 0xfffffffffffffU; |
|
|
1449 | #endif |
|
|
1450 | |
|
|
1451 | return r; |
|
|
1452 | } |
|
|
1453 | |
|
|
1454 | /* converts an ieee double/binary64 to a double */ |
|
|
1455 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1456 | ecb_function_ ecb_const double |
|
|
1457 | ecb_binary64_to_double (uint64_t x) |
|
|
1458 | { |
|
|
1459 | double r; |
|
|
1460 | |
|
|
1461 | #if ECB_STDFP |
|
|
1462 | memcpy (&r, &x, 8); |
|
|
1463 | #else |
|
|
1464 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1465 | int neg = x >> 63; |
|
|
1466 | int e = (x >> 52) & 0x7ffU; |
|
|
1467 | |
|
|
1468 | x &= 0xfffffffffffffU; |
|
|
1469 | |
|
|
1470 | if (e) |
|
|
1471 | x |= 0x10000000000000U; |
|
|
1472 | else |
|
|
1473 | e = 1; |
|
|
1474 | |
|
|
1475 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1476 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1477 | |
|
|
1478 | r = neg ? -r : r; |
|
|
1479 | #endif |
|
|
1480 | |
|
|
1481 | return r; |
|
|
1482 | } |
|
|
1483 | |
|
|
1484 | /* convert a float to ieee half/binary16 */ |
|
|
1485 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1486 | ecb_function_ ecb_const uint16_t |
|
|
1487 | ecb_float_to_binary16 (float x) |
|
|
1488 | { |
|
|
1489 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1490 | } |
|
|
1491 | |
|
|
1492 | /* convert an ieee half/binary16 to float */ |
|
|
1493 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1494 | ecb_function_ ecb_const float |
|
|
1495 | ecb_binary16_to_float (uint16_t x) |
|
|
1496 | { |
|
|
1497 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1498 | } |
|
|
1499 | |
|
|
1500 | #endif |
|
|
1501 | |
|
|
1502 | #endif |
|
|
1503 | |
|
|
1504 | /* ECB.H END */ |
|
|
1505 | |
|
|
1506 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1507 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1508 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1509 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
1510 | * libev, in which cases the memory fences become nops. |
|
|
1511 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1512 | * which will then provide the memory fences. |
|
|
1513 | */ |
|
|
1514 | # error "memory fences not defined for your architecture, please report" |
|
|
1515 | #endif |
|
|
1516 | |
|
|
1517 | #ifndef ECB_MEMORY_FENCE |
|
|
1518 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1519 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1520 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1521 | #endif |
|
|
1522 | |
|
|
1523 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1524 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1525 | #define noinline ecb_noinline |
|
|
1526 | |
|
|
1527 | #define inline_size ecb_inline |
|
|
1528 | |
|
|
1529 | #if EV_FEATURE_CODE |
|
|
1530 | # define inline_speed ecb_inline |
|
|
1531 | #else |
|
|
1532 | # define inline_speed noinline static |
|
|
1533 | #endif |
|
|
1534 | |
|
|
1535 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1536 | |
|
|
1537 | #if EV_MINPRI == EV_MAXPRI |
|
|
1538 | # define ABSPRI(w) (((W)w), 0) |
|
|
1539 | #else |
|
|
1540 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1541 | #endif |
|
|
1542 | |
|
|
1543 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
1544 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
1545 | |
|
|
1546 | typedef ev_watcher *W; |
|
|
1547 | typedef ev_watcher_list *WL; |
|
|
1548 | typedef ev_watcher_time *WT; |
|
|
1549 | |
|
|
1550 | #define ev_active(w) ((W)(w))->active |
|
|
1551 | #define ev_at(w) ((WT)(w))->at |
|
|
1552 | |
|
|
1553 | #if EV_USE_REALTIME |
|
|
1554 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1555 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1556 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1557 | #endif |
|
|
1558 | |
|
|
1559 | #if EV_USE_MONOTONIC |
|
|
1560 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1561 | #endif |
|
|
1562 | |
|
|
1563 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1564 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1565 | #endif |
|
|
1566 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1567 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1568 | #endif |
|
|
1569 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1570 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1571 | #endif |
|
|
1572 | |
|
|
1573 | #ifdef _WIN32 |
22 | #include "ev.h" |
1574 | # include "ev_win32.c" |
|
|
1575 | #endif |
23 | |
1576 | |
24 | struct ev_watcher { |
1577 | /*****************************************************************************/ |
25 | EV_WATCHER (ev_watcher); |
|
|
26 | }; |
|
|
27 | |
1578 | |
28 | struct ev_watcher_list { |
1579 | /* define a suitable floor function (only used by periodics atm) */ |
29 | EV_WATCHER_LIST (ev_watcher_list); |
|
|
30 | }; |
|
|
31 | |
1580 | |
32 | static ev_tstamp now, diff; /* monotonic clock */ |
1581 | #if EV_USE_FLOOR |
|
|
1582 | # include <math.h> |
|
|
1583 | # define ev_floor(v) floor (v) |
|
|
1584 | #else |
|
|
1585 | |
|
|
1586 | #include <float.h> |
|
|
1587 | |
|
|
1588 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1589 | noinline |
|
|
1590 | static ev_tstamp |
|
|
1591 | ev_floor (ev_tstamp v) |
|
|
1592 | { |
|
|
1593 | /* the choice of shift factor is not terribly important */ |
|
|
1594 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1595 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1596 | #else |
|
|
1597 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1598 | #endif |
|
|
1599 | |
|
|
1600 | /* argument too large for an unsigned long? */ |
|
|
1601 | if (expect_false (v >= shift)) |
|
|
1602 | { |
|
|
1603 | ev_tstamp f; |
|
|
1604 | |
|
|
1605 | if (v == v - 1.) |
|
|
1606 | return v; /* very large number */ |
|
|
1607 | |
|
|
1608 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1609 | return f + ev_floor (v - f); |
|
|
1610 | } |
|
|
1611 | |
|
|
1612 | /* special treatment for negative args? */ |
|
|
1613 | if (expect_false (v < 0.)) |
|
|
1614 | { |
|
|
1615 | ev_tstamp f = -ev_floor (-v); |
|
|
1616 | |
|
|
1617 | return f - (f == v ? 0 : 1); |
|
|
1618 | } |
|
|
1619 | |
|
|
1620 | /* fits into an unsigned long */ |
|
|
1621 | return (unsigned long)v; |
|
|
1622 | } |
|
|
1623 | |
|
|
1624 | #endif |
|
|
1625 | |
|
|
1626 | /*****************************************************************************/ |
|
|
1627 | |
|
|
1628 | #ifdef __linux |
|
|
1629 | # include <sys/utsname.h> |
|
|
1630 | #endif |
|
|
1631 | |
|
|
1632 | noinline ecb_cold |
|
|
1633 | static unsigned int |
|
|
1634 | ev_linux_version (void) |
|
|
1635 | { |
|
|
1636 | #ifdef __linux |
|
|
1637 | unsigned int v = 0; |
|
|
1638 | struct utsname buf; |
|
|
1639 | int i; |
|
|
1640 | char *p = buf.release; |
|
|
1641 | |
|
|
1642 | if (uname (&buf)) |
|
|
1643 | return 0; |
|
|
1644 | |
|
|
1645 | for (i = 3+1; --i; ) |
|
|
1646 | { |
|
|
1647 | unsigned int c = 0; |
|
|
1648 | |
|
|
1649 | for (;;) |
|
|
1650 | { |
|
|
1651 | if (*p >= '0' && *p <= '9') |
|
|
1652 | c = c * 10 + *p++ - '0'; |
|
|
1653 | else |
|
|
1654 | { |
|
|
1655 | p += *p == '.'; |
|
|
1656 | break; |
|
|
1657 | } |
|
|
1658 | } |
|
|
1659 | |
|
|
1660 | v = (v << 8) | c; |
|
|
1661 | } |
|
|
1662 | |
|
|
1663 | return v; |
|
|
1664 | #else |
|
|
1665 | return 0; |
|
|
1666 | #endif |
|
|
1667 | } |
|
|
1668 | |
|
|
1669 | /*****************************************************************************/ |
|
|
1670 | |
|
|
1671 | #if EV_AVOID_STDIO |
|
|
1672 | noinline ecb_cold |
|
|
1673 | static void |
|
|
1674 | ev_printerr (const char *msg) |
|
|
1675 | { |
|
|
1676 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1677 | } |
|
|
1678 | #endif |
|
|
1679 | |
|
|
1680 | static void (*syserr_cb)(const char *msg) EV_THROW; |
|
|
1681 | |
|
|
1682 | ecb_cold |
|
|
1683 | void |
|
|
1684 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW |
|
|
1685 | { |
|
|
1686 | syserr_cb = cb; |
|
|
1687 | } |
|
|
1688 | |
|
|
1689 | noinline ecb_cold |
|
|
1690 | static void |
|
|
1691 | ev_syserr (const char *msg) |
|
|
1692 | { |
|
|
1693 | if (!msg) |
|
|
1694 | msg = "(libev) system error"; |
|
|
1695 | |
|
|
1696 | if (syserr_cb) |
|
|
1697 | syserr_cb (msg); |
|
|
1698 | else |
|
|
1699 | { |
|
|
1700 | #if EV_AVOID_STDIO |
|
|
1701 | ev_printerr (msg); |
|
|
1702 | ev_printerr (": "); |
|
|
1703 | ev_printerr (strerror (errno)); |
|
|
1704 | ev_printerr ("\n"); |
|
|
1705 | #else |
|
|
1706 | perror (msg); |
|
|
1707 | #endif |
|
|
1708 | abort (); |
|
|
1709 | } |
|
|
1710 | } |
|
|
1711 | |
|
|
1712 | static void * |
|
|
1713 | ev_realloc_emul (void *ptr, long size) EV_THROW |
|
|
1714 | { |
|
|
1715 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1716 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1717 | * the single unix specification, so work around them here. |
|
|
1718 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1719 | * despite documenting it otherwise. |
|
|
1720 | */ |
|
|
1721 | |
|
|
1722 | if (size) |
|
|
1723 | return realloc (ptr, size); |
|
|
1724 | |
|
|
1725 | free (ptr); |
|
|
1726 | return 0; |
|
|
1727 | } |
|
|
1728 | |
|
|
1729 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
|
|
1730 | |
|
|
1731 | ecb_cold |
|
|
1732 | void |
|
|
1733 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW |
|
|
1734 | { |
|
|
1735 | alloc = cb; |
|
|
1736 | } |
|
|
1737 | |
|
|
1738 | inline_speed void * |
|
|
1739 | ev_realloc (void *ptr, long size) |
|
|
1740 | { |
|
|
1741 | ptr = alloc (ptr, size); |
|
|
1742 | |
|
|
1743 | if (!ptr && size) |
|
|
1744 | { |
|
|
1745 | #if EV_AVOID_STDIO |
|
|
1746 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1747 | #else |
|
|
1748 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1749 | #endif |
|
|
1750 | abort (); |
|
|
1751 | } |
|
|
1752 | |
|
|
1753 | return ptr; |
|
|
1754 | } |
|
|
1755 | |
|
|
1756 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
1757 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
1758 | |
|
|
1759 | /*****************************************************************************/ |
|
|
1760 | |
|
|
1761 | /* set in reify when reification needed */ |
|
|
1762 | #define EV_ANFD_REIFY 1 |
|
|
1763 | |
|
|
1764 | /* file descriptor info structure */ |
|
|
1765 | typedef struct |
|
|
1766 | { |
|
|
1767 | WL head; |
|
|
1768 | unsigned char events; /* the events watched for */ |
|
|
1769 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1770 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
1771 | unsigned char unused; |
|
|
1772 | #if EV_USE_EPOLL |
|
|
1773 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1774 | #endif |
|
|
1775 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1776 | SOCKET handle; |
|
|
1777 | #endif |
|
|
1778 | #if EV_USE_IOCP |
|
|
1779 | OVERLAPPED or, ow; |
|
|
1780 | #endif |
|
|
1781 | } ANFD; |
|
|
1782 | |
|
|
1783 | /* stores the pending event set for a given watcher */ |
|
|
1784 | typedef struct |
|
|
1785 | { |
|
|
1786 | W w; |
|
|
1787 | int events; /* the pending event set for the given watcher */ |
|
|
1788 | } ANPENDING; |
|
|
1789 | |
|
|
1790 | #if EV_USE_INOTIFY |
|
|
1791 | /* hash table entry per inotify-id */ |
|
|
1792 | typedef struct |
|
|
1793 | { |
|
|
1794 | WL head; |
|
|
1795 | } ANFS; |
|
|
1796 | #endif |
|
|
1797 | |
|
|
1798 | /* Heap Entry */ |
|
|
1799 | #if EV_HEAP_CACHE_AT |
|
|
1800 | /* a heap element */ |
|
|
1801 | typedef struct { |
|
|
1802 | ev_tstamp at; |
|
|
1803 | WT w; |
|
|
1804 | } ANHE; |
|
|
1805 | |
|
|
1806 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1807 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1808 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1809 | #else |
|
|
1810 | /* a heap element */ |
|
|
1811 | typedef WT ANHE; |
|
|
1812 | |
|
|
1813 | #define ANHE_w(he) (he) |
|
|
1814 | #define ANHE_at(he) (he)->at |
|
|
1815 | #define ANHE_at_cache(he) |
|
|
1816 | #endif |
|
|
1817 | |
|
|
1818 | #if EV_MULTIPLICITY |
|
|
1819 | |
|
|
1820 | struct ev_loop |
|
|
1821 | { |
33 | ev_tstamp ev_now; |
1822 | ev_tstamp ev_rt_now; |
34 | int ev_method; |
1823 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
1824 | #define VAR(name,decl) decl; |
|
|
1825 | #include "ev_vars.h" |
|
|
1826 | #undef VAR |
|
|
1827 | }; |
|
|
1828 | #include "ev_wrap.h" |
35 | |
1829 | |
36 | static int have_monotonic; /* runtime */ |
1830 | static struct ev_loop default_loop_struct; |
|
|
1831 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
37 | |
1832 | |
38 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
1833 | #else |
39 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
40 | static void (*method_poll)(ev_tstamp timeout); |
|
|
41 | |
1834 | |
|
|
1835 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
|
|
1836 | #define VAR(name,decl) static decl; |
|
|
1837 | #include "ev_vars.h" |
|
|
1838 | #undef VAR |
|
|
1839 | |
|
|
1840 | static int ev_default_loop_ptr; |
|
|
1841 | |
|
|
1842 | #endif |
|
|
1843 | |
|
|
1844 | #if EV_FEATURE_API |
|
|
1845 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
1846 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
1847 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
1848 | #else |
|
|
1849 | # define EV_RELEASE_CB (void)0 |
|
|
1850 | # define EV_ACQUIRE_CB (void)0 |
|
|
1851 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
1852 | #endif |
|
|
1853 | |
|
|
1854 | #define EVBREAK_RECURSE 0x80 |
|
|
1855 | |
|
|
1856 | /*****************************************************************************/ |
|
|
1857 | |
|
|
1858 | #ifndef EV_HAVE_EV_TIME |
42 | ev_tstamp |
1859 | ev_tstamp |
43 | ev_time (void) |
1860 | ev_time (void) EV_THROW |
44 | { |
1861 | { |
45 | #if HAVE_REALTIME |
1862 | #if EV_USE_REALTIME |
|
|
1863 | if (expect_true (have_realtime)) |
|
|
1864 | { |
46 | struct timespec ts; |
1865 | struct timespec ts; |
47 | clock_gettime (CLOCK_REALTIME, &ts); |
1866 | clock_gettime (CLOCK_REALTIME, &ts); |
48 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1867 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
49 | #else |
1868 | } |
|
|
1869 | #endif |
|
|
1870 | |
50 | struct timeval tv; |
1871 | struct timeval tv; |
51 | gettimeofday (&tv, 0); |
1872 | gettimeofday (&tv, 0); |
52 | return tv.tv_sec + tv.tv_usec * 1e-6; |
1873 | return tv.tv_sec + tv.tv_usec * 1e-6; |
53 | #endif |
|
|
54 | } |
1874 | } |
|
|
1875 | #endif |
55 | |
1876 | |
56 | static ev_tstamp |
1877 | inline_size ev_tstamp |
57 | get_clock (void) |
1878 | get_clock (void) |
58 | { |
1879 | { |
59 | #if HAVE_MONOTONIC |
1880 | #if EV_USE_MONOTONIC |
60 | if (have_monotonic) |
1881 | if (expect_true (have_monotonic)) |
61 | { |
1882 | { |
62 | struct timespec ts; |
1883 | struct timespec ts; |
63 | clock_gettime (CLOCK_MONOTONIC, &ts); |
1884 | clock_gettime (CLOCK_MONOTONIC, &ts); |
64 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1885 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
65 | } |
1886 | } |
66 | #endif |
1887 | #endif |
67 | |
1888 | |
68 | return ev_time (); |
1889 | return ev_time (); |
69 | } |
1890 | } |
70 | |
1891 | |
|
|
1892 | #if EV_MULTIPLICITY |
|
|
1893 | ev_tstamp |
|
|
1894 | ev_now (EV_P) EV_THROW |
|
|
1895 | { |
|
|
1896 | return ev_rt_now; |
|
|
1897 | } |
|
|
1898 | #endif |
|
|
1899 | |
|
|
1900 | void |
|
|
1901 | ev_sleep (ev_tstamp delay) EV_THROW |
|
|
1902 | { |
|
|
1903 | if (delay > 0.) |
|
|
1904 | { |
|
|
1905 | #if EV_USE_NANOSLEEP |
|
|
1906 | struct timespec ts; |
|
|
1907 | |
|
|
1908 | EV_TS_SET (ts, delay); |
|
|
1909 | nanosleep (&ts, 0); |
|
|
1910 | #elif defined _WIN32 |
|
|
1911 | /* maybe this should round up, as ms is very low resolution */ |
|
|
1912 | /* compared to select (µs) or nanosleep (ns) */ |
|
|
1913 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
1914 | #else |
|
|
1915 | struct timeval tv; |
|
|
1916 | |
|
|
1917 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
1918 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
1919 | /* by older ones */ |
|
|
1920 | EV_TV_SET (tv, delay); |
|
|
1921 | select (0, 0, 0, 0, &tv); |
|
|
1922 | #endif |
|
|
1923 | } |
|
|
1924 | } |
|
|
1925 | |
|
|
1926 | /*****************************************************************************/ |
|
|
1927 | |
|
|
1928 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
1929 | |
|
|
1930 | /* find a suitable new size for the given array, */ |
|
|
1931 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
1932 | inline_size int |
|
|
1933 | array_nextsize (int elem, int cur, int cnt) |
|
|
1934 | { |
|
|
1935 | int ncur = cur + 1; |
|
|
1936 | |
|
|
1937 | do |
|
|
1938 | ncur <<= 1; |
|
|
1939 | while (cnt > ncur); |
|
|
1940 | |
|
|
1941 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
|
|
1942 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
1943 | { |
|
|
1944 | ncur *= elem; |
|
|
1945 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
1946 | ncur = ncur - sizeof (void *) * 4; |
|
|
1947 | ncur /= elem; |
|
|
1948 | } |
|
|
1949 | |
|
|
1950 | return ncur; |
|
|
1951 | } |
|
|
1952 | |
|
|
1953 | noinline ecb_cold |
|
|
1954 | static void * |
|
|
1955 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
1956 | { |
|
|
1957 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
1958 | return ev_realloc (base, elem * *cur); |
|
|
1959 | } |
|
|
1960 | |
|
|
1961 | #define array_init_zero(base,count) \ |
|
|
1962 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
1963 | |
71 | #define array_needsize(base,cur,cnt,init) \ |
1964 | #define array_needsize(type,base,cur,cnt,init) \ |
72 | if ((cnt) > cur) \ |
1965 | if (expect_false ((cnt) > (cur))) \ |
73 | { \ |
1966 | { \ |
74 | int newcnt = cur ? cur << 1 : 16; \ |
1967 | ecb_unused int ocur_ = (cur); \ |
75 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
1968 | (base) = (type *)array_realloc \ |
76 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
1969 | (sizeof (type), (base), &(cur), (cnt)); \ |
77 | init (base + cur, newcnt - cur); \ |
1970 | init ((base) + (ocur_), (cur) - ocur_); \ |
78 | cur = newcnt; \ |
|
|
79 | } |
1971 | } |
80 | |
1972 | |
81 | typedef struct |
1973 | #if 0 |
82 | { |
1974 | #define array_slim(type,stem) \ |
83 | struct ev_io *head; |
1975 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
84 | unsigned char wev, rev; /* want, received event set */ |
1976 | { \ |
85 | } ANFD; |
1977 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
1978 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
1979 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
1980 | } |
|
|
1981 | #endif |
86 | |
1982 | |
87 | static ANFD *anfds; |
1983 | #define array_free(stem, idx) \ |
88 | static int anfdmax; |
1984 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
89 | |
1985 | |
90 | static int *fdchanges; |
1986 | /*****************************************************************************/ |
91 | static int fdchangemax, fdchangecnt; |
|
|
92 | |
1987 | |
|
|
1988 | /* dummy callback for pending events */ |
|
|
1989 | noinline |
93 | static void |
1990 | static void |
94 | anfds_init (ANFD *base, int count) |
1991 | pendingcb (EV_P_ ev_prepare *w, int revents) |
95 | { |
1992 | { |
96 | while (count--) |
|
|
97 | { |
|
|
98 | base->head = 0; |
|
|
99 | base->wev = base->rev = EV_NONE; |
|
|
100 | ++base; |
|
|
101 | } |
|
|
102 | } |
1993 | } |
103 | |
1994 | |
104 | typedef struct |
1995 | noinline |
|
|
1996 | void |
|
|
1997 | ev_feed_event (EV_P_ void *w, int revents) EV_THROW |
105 | { |
1998 | { |
106 | struct ev_watcher *w; |
1999 | W w_ = (W)w; |
107 | int events; |
2000 | int pri = ABSPRI (w_); |
108 | } ANPENDING; |
|
|
109 | |
2001 | |
110 | static ANPENDING *pendings; |
2002 | if (expect_false (w_->pending)) |
111 | static int pendingmax, pendingcnt; |
|
|
112 | |
|
|
113 | static void |
|
|
114 | event (struct ev_watcher *w, int events) |
|
|
115 | { |
|
|
116 | w->pending = ++pendingcnt; |
|
|
117 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
118 | pendings [pendingcnt - 1].w = w; |
|
|
119 | pendings [pendingcnt - 1].events = events; |
2003 | pendings [pri][w_->pending - 1].events |= revents; |
120 | } |
2004 | else |
|
|
2005 | { |
|
|
2006 | w_->pending = ++pendingcnt [pri]; |
|
|
2007 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
2008 | pendings [pri][w_->pending - 1].w = w_; |
|
|
2009 | pendings [pri][w_->pending - 1].events = revents; |
|
|
2010 | } |
121 | |
2011 | |
122 | static void |
2012 | pendingpri = NUMPRI - 1; |
|
|
2013 | } |
|
|
2014 | |
|
|
2015 | inline_speed void |
|
|
2016 | feed_reverse (EV_P_ W w) |
|
|
2017 | { |
|
|
2018 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
2019 | rfeeds [rfeedcnt++] = w; |
|
|
2020 | } |
|
|
2021 | |
|
|
2022 | inline_size void |
|
|
2023 | feed_reverse_done (EV_P_ int revents) |
|
|
2024 | { |
|
|
2025 | do |
|
|
2026 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
2027 | while (rfeedcnt); |
|
|
2028 | } |
|
|
2029 | |
|
|
2030 | inline_speed void |
|
|
2031 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
2032 | { |
|
|
2033 | int i; |
|
|
2034 | |
|
|
2035 | for (i = 0; i < eventcnt; ++i) |
|
|
2036 | ev_feed_event (EV_A_ events [i], type); |
|
|
2037 | } |
|
|
2038 | |
|
|
2039 | /*****************************************************************************/ |
|
|
2040 | |
|
|
2041 | inline_speed void |
123 | fd_event (int fd, int events) |
2042 | fd_event_nocheck (EV_P_ int fd, int revents) |
124 | { |
2043 | { |
125 | ANFD *anfd = anfds + fd; |
2044 | ANFD *anfd = anfds + fd; |
126 | struct ev_io *w; |
2045 | ev_io *w; |
127 | |
2046 | |
128 | for (w = anfd->head; w; w = w->next) |
2047 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
129 | { |
2048 | { |
130 | int ev = w->events & events; |
2049 | int ev = w->events & revents; |
131 | |
2050 | |
132 | if (ev) |
2051 | if (ev) |
133 | event ((struct ev_watcher *)w, ev); |
2052 | ev_feed_event (EV_A_ (W)w, ev); |
134 | } |
|
|
135 | } |
|
|
136 | |
|
|
137 | static struct ev_timer **atimers; |
|
|
138 | static int atimermax, atimercnt; |
|
|
139 | |
|
|
140 | static struct ev_timer **rtimers; |
|
|
141 | static int rtimermax, rtimercnt; |
|
|
142 | |
|
|
143 | static void |
|
|
144 | upheap (struct ev_timer **timers, int k) |
|
|
145 | { |
|
|
146 | struct ev_timer *w = timers [k]; |
|
|
147 | |
|
|
148 | while (k && timers [k >> 1]->at > w->at) |
|
|
149 | { |
2053 | } |
150 | timers [k] = timers [k >> 1]; |
|
|
151 | timers [k]->active = k + 1; |
|
|
152 | k >>= 1; |
|
|
153 | } |
|
|
154 | |
|
|
155 | timers [k] = w; |
|
|
156 | timers [k]->active = k + 1; |
|
|
157 | |
|
|
158 | } |
2054 | } |
159 | |
2055 | |
160 | static void |
2056 | /* do not submit kernel events for fds that have reify set */ |
161 | downheap (struct ev_timer **timers, int N, int k) |
2057 | /* because that means they changed while we were polling for new events */ |
|
|
2058 | inline_speed void |
|
|
2059 | fd_event (EV_P_ int fd, int revents) |
162 | { |
2060 | { |
163 | struct ev_timer *w = timers [k]; |
2061 | ANFD *anfd = anfds + fd; |
164 | |
2062 | |
165 | while (k < (N >> 1)) |
2063 | if (expect_true (!anfd->reify)) |
166 | { |
2064 | fd_event_nocheck (EV_A_ fd, revents); |
167 | int j = k << 1; |
|
|
168 | |
|
|
169 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
170 | ++j; |
|
|
171 | |
|
|
172 | if (w->at <= timers [j]->at) |
|
|
173 | break; |
|
|
174 | |
|
|
175 | timers [k] = timers [j]; |
|
|
176 | timers [k]->active = k + 1; |
|
|
177 | k = j; |
|
|
178 | } |
|
|
179 | |
|
|
180 | timers [k] = w; |
|
|
181 | timers [k]->active = k + 1; |
|
|
182 | } |
2065 | } |
183 | |
2066 | |
184 | static struct ev_signal **signals; |
2067 | void |
185 | static int signalmax; |
2068 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW |
186 | |
|
|
187 | static void |
|
|
188 | signals_init (struct ev_signal **base, int count) |
|
|
189 | { |
2069 | { |
190 | while (count--) |
2070 | if (fd >= 0 && fd < anfdmax) |
191 | *base++ = 0; |
2071 | fd_event_nocheck (EV_A_ fd, revents); |
192 | } |
2072 | } |
193 | |
2073 | |
194 | #if HAVE_EPOLL |
2074 | /* make sure the external fd watch events are in-sync */ |
195 | # include "ev_epoll.c" |
2075 | /* with the kernel/libev internal state */ |
196 | #endif |
2076 | inline_size void |
197 | #if HAVE_SELECT |
2077 | fd_reify (EV_P) |
198 | # include "ev_select.c" |
|
|
199 | #endif |
|
|
200 | |
|
|
201 | int ev_init (int flags) |
|
|
202 | { |
|
|
203 | #if HAVE_MONOTONIC |
|
|
204 | { |
|
|
205 | struct timespec ts; |
|
|
206 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
207 | have_monotonic = 1; |
|
|
208 | } |
|
|
209 | #endif |
|
|
210 | |
|
|
211 | ev_now = ev_time (); |
|
|
212 | now = get_clock (); |
|
|
213 | diff = ev_now - now; |
|
|
214 | |
|
|
215 | #if HAVE_EPOLL |
|
|
216 | if (epoll_init (flags)) |
|
|
217 | return ev_method; |
|
|
218 | #endif |
|
|
219 | #if HAVE_SELECT |
|
|
220 | if (select_init (flags)) |
|
|
221 | return ev_method; |
|
|
222 | #endif |
|
|
223 | |
|
|
224 | ev_method = EVMETHOD_NONE; |
|
|
225 | return ev_method; |
|
|
226 | } |
|
|
227 | |
|
|
228 | void ev_prefork (void) |
|
|
229 | { |
|
|
230 | } |
|
|
231 | |
|
|
232 | void ev_postfork_parent (void) |
|
|
233 | { |
|
|
234 | } |
|
|
235 | |
|
|
236 | void ev_postfork_child (void) |
|
|
237 | { |
|
|
238 | #if HAVE_EPOLL |
|
|
239 | if (ev_method == EVMETHOD_EPOLL) |
|
|
240 | epoll_postfork_child (); |
|
|
241 | #endif |
|
|
242 | } |
|
|
243 | |
|
|
244 | static void |
|
|
245 | fd_reify (void) |
|
|
246 | { |
2078 | { |
247 | int i; |
2079 | int i; |
248 | |
2080 | |
|
|
2081 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
249 | for (i = 0; i < fdchangecnt; ++i) |
2082 | for (i = 0; i < fdchangecnt; ++i) |
250 | { |
2083 | { |
251 | int fd = fdchanges [i]; |
2084 | int fd = fdchanges [i]; |
252 | ANFD *anfd = anfds + fd; |
2085 | ANFD *anfd = anfds + fd; |
253 | struct ev_io *w; |
|
|
254 | |
2086 | |
255 | int wev = 0; |
2087 | if (anfd->reify & EV__IOFDSET && anfd->head) |
256 | |
|
|
257 | for (w = anfd->head; w; w = w->next) |
|
|
258 | wev |= w->events; |
|
|
259 | |
|
|
260 | if (anfd->wev != wev) |
|
|
261 | { |
2088 | { |
262 | method_modify (fd, anfd->wev, wev); |
2089 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
2090 | |
|
|
2091 | if (handle != anfd->handle) |
|
|
2092 | { |
|
|
2093 | unsigned long arg; |
|
|
2094 | |
|
|
2095 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
2096 | |
|
|
2097 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
2098 | backend_modify (EV_A_ fd, anfd->events, 0); |
263 | anfd->wev = wev; |
2099 | anfd->events = 0; |
|
|
2100 | anfd->handle = handle; |
|
|
2101 | } |
264 | } |
2102 | } |
265 | } |
2103 | } |
|
|
2104 | #endif |
|
|
2105 | |
|
|
2106 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2107 | { |
|
|
2108 | int fd = fdchanges [i]; |
|
|
2109 | ANFD *anfd = anfds + fd; |
|
|
2110 | ev_io *w; |
|
|
2111 | |
|
|
2112 | unsigned char o_events = anfd->events; |
|
|
2113 | unsigned char o_reify = anfd->reify; |
|
|
2114 | |
|
|
2115 | anfd->reify = 0; |
|
|
2116 | |
|
|
2117 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
2118 | { |
|
|
2119 | anfd->events = 0; |
|
|
2120 | |
|
|
2121 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
2122 | anfd->events |= (unsigned char)w->events; |
|
|
2123 | |
|
|
2124 | if (o_events != anfd->events) |
|
|
2125 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
2126 | } |
|
|
2127 | |
|
|
2128 | if (o_reify & EV__IOFDSET) |
|
|
2129 | backend_modify (EV_A_ fd, o_events, anfd->events); |
|
|
2130 | } |
266 | |
2131 | |
267 | fdchangecnt = 0; |
2132 | fdchangecnt = 0; |
268 | } |
2133 | } |
269 | |
2134 | |
|
|
2135 | /* something about the given fd changed */ |
|
|
2136 | inline_size |
|
|
2137 | void |
|
|
2138 | fd_change (EV_P_ int fd, int flags) |
|
|
2139 | { |
|
|
2140 | unsigned char reify = anfds [fd].reify; |
|
|
2141 | anfds [fd].reify |= flags; |
|
|
2142 | |
|
|
2143 | if (expect_true (!reify)) |
|
|
2144 | { |
|
|
2145 | ++fdchangecnt; |
|
|
2146 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
2147 | fdchanges [fdchangecnt - 1] = fd; |
|
|
2148 | } |
|
|
2149 | } |
|
|
2150 | |
|
|
2151 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
2152 | inline_speed ecb_cold void |
|
|
2153 | fd_kill (EV_P_ int fd) |
|
|
2154 | { |
|
|
2155 | ev_io *w; |
|
|
2156 | |
|
|
2157 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
2158 | { |
|
|
2159 | ev_io_stop (EV_A_ w); |
|
|
2160 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
2161 | } |
|
|
2162 | } |
|
|
2163 | |
|
|
2164 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
2165 | inline_size ecb_cold int |
|
|
2166 | fd_valid (int fd) |
|
|
2167 | { |
|
|
2168 | #ifdef _WIN32 |
|
|
2169 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
|
|
2170 | #else |
|
|
2171 | return fcntl (fd, F_GETFD) != -1; |
|
|
2172 | #endif |
|
|
2173 | } |
|
|
2174 | |
|
|
2175 | /* called on EBADF to verify fds */ |
|
|
2176 | noinline ecb_cold |
270 | static void |
2177 | static void |
271 | call_pending () |
2178 | fd_ebadf (EV_P) |
|
|
2179 | { |
|
|
2180 | int fd; |
|
|
2181 | |
|
|
2182 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
2183 | if (anfds [fd].events) |
|
|
2184 | if (!fd_valid (fd) && errno == EBADF) |
|
|
2185 | fd_kill (EV_A_ fd); |
|
|
2186 | } |
|
|
2187 | |
|
|
2188 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
2189 | noinline ecb_cold |
|
|
2190 | static void |
|
|
2191 | fd_enomem (EV_P) |
|
|
2192 | { |
|
|
2193 | int fd; |
|
|
2194 | |
|
|
2195 | for (fd = anfdmax; fd--; ) |
|
|
2196 | if (anfds [fd].events) |
|
|
2197 | { |
|
|
2198 | fd_kill (EV_A_ fd); |
|
|
2199 | break; |
|
|
2200 | } |
|
|
2201 | } |
|
|
2202 | |
|
|
2203 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
2204 | noinline |
|
|
2205 | static void |
|
|
2206 | fd_rearm_all (EV_P) |
|
|
2207 | { |
|
|
2208 | int fd; |
|
|
2209 | |
|
|
2210 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
2211 | if (anfds [fd].events) |
|
|
2212 | { |
|
|
2213 | anfds [fd].events = 0; |
|
|
2214 | anfds [fd].emask = 0; |
|
|
2215 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
|
|
2216 | } |
|
|
2217 | } |
|
|
2218 | |
|
|
2219 | /* used to prepare libev internal fd's */ |
|
|
2220 | /* this is not fork-safe */ |
|
|
2221 | inline_speed void |
|
|
2222 | fd_intern (int fd) |
|
|
2223 | { |
|
|
2224 | #ifdef _WIN32 |
|
|
2225 | unsigned long arg = 1; |
|
|
2226 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
2227 | #else |
|
|
2228 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
2229 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
2230 | #endif |
|
|
2231 | } |
|
|
2232 | |
|
|
2233 | /*****************************************************************************/ |
|
|
2234 | |
|
|
2235 | /* |
|
|
2236 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
2237 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
2238 | * the branching factor of the d-tree. |
|
|
2239 | */ |
|
|
2240 | |
|
|
2241 | /* |
|
|
2242 | * at the moment we allow libev the luxury of two heaps, |
|
|
2243 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
2244 | * which is more cache-efficient. |
|
|
2245 | * the difference is about 5% with 50000+ watchers. |
|
|
2246 | */ |
|
|
2247 | #if EV_USE_4HEAP |
|
|
2248 | |
|
|
2249 | #define DHEAP 4 |
|
|
2250 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
2251 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
2252 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
2253 | |
|
|
2254 | /* away from the root */ |
|
|
2255 | inline_speed void |
|
|
2256 | downheap (ANHE *heap, int N, int k) |
|
|
2257 | { |
|
|
2258 | ANHE he = heap [k]; |
|
|
2259 | ANHE *E = heap + N + HEAP0; |
|
|
2260 | |
|
|
2261 | for (;;) |
|
|
2262 | { |
|
|
2263 | ev_tstamp minat; |
|
|
2264 | ANHE *minpos; |
|
|
2265 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
2266 | |
|
|
2267 | /* find minimum child */ |
|
|
2268 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
2269 | { |
|
|
2270 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2271 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2272 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2273 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2274 | } |
|
|
2275 | else if (pos < E) |
|
|
2276 | { |
|
|
2277 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2278 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2279 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2280 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2281 | } |
|
|
2282 | else |
|
|
2283 | break; |
|
|
2284 | |
|
|
2285 | if (ANHE_at (he) <= minat) |
|
|
2286 | break; |
|
|
2287 | |
|
|
2288 | heap [k] = *minpos; |
|
|
2289 | ev_active (ANHE_w (*minpos)) = k; |
|
|
2290 | |
|
|
2291 | k = minpos - heap; |
|
|
2292 | } |
|
|
2293 | |
|
|
2294 | heap [k] = he; |
|
|
2295 | ev_active (ANHE_w (he)) = k; |
|
|
2296 | } |
|
|
2297 | |
|
|
2298 | #else /* 4HEAP */ |
|
|
2299 | |
|
|
2300 | #define HEAP0 1 |
|
|
2301 | #define HPARENT(k) ((k) >> 1) |
|
|
2302 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
2303 | |
|
|
2304 | /* away from the root */ |
|
|
2305 | inline_speed void |
|
|
2306 | downheap (ANHE *heap, int N, int k) |
|
|
2307 | { |
|
|
2308 | ANHE he = heap [k]; |
|
|
2309 | |
|
|
2310 | for (;;) |
|
|
2311 | { |
|
|
2312 | int c = k << 1; |
|
|
2313 | |
|
|
2314 | if (c >= N + HEAP0) |
|
|
2315 | break; |
|
|
2316 | |
|
|
2317 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
2318 | ? 1 : 0; |
|
|
2319 | |
|
|
2320 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
2321 | break; |
|
|
2322 | |
|
|
2323 | heap [k] = heap [c]; |
|
|
2324 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2325 | |
|
|
2326 | k = c; |
|
|
2327 | } |
|
|
2328 | |
|
|
2329 | heap [k] = he; |
|
|
2330 | ev_active (ANHE_w (he)) = k; |
|
|
2331 | } |
|
|
2332 | #endif |
|
|
2333 | |
|
|
2334 | /* towards the root */ |
|
|
2335 | inline_speed void |
|
|
2336 | upheap (ANHE *heap, int k) |
|
|
2337 | { |
|
|
2338 | ANHE he = heap [k]; |
|
|
2339 | |
|
|
2340 | for (;;) |
|
|
2341 | { |
|
|
2342 | int p = HPARENT (k); |
|
|
2343 | |
|
|
2344 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
2345 | break; |
|
|
2346 | |
|
|
2347 | heap [k] = heap [p]; |
|
|
2348 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2349 | k = p; |
|
|
2350 | } |
|
|
2351 | |
|
|
2352 | heap [k] = he; |
|
|
2353 | ev_active (ANHE_w (he)) = k; |
|
|
2354 | } |
|
|
2355 | |
|
|
2356 | /* move an element suitably so it is in a correct place */ |
|
|
2357 | inline_size void |
|
|
2358 | adjustheap (ANHE *heap, int N, int k) |
|
|
2359 | { |
|
|
2360 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
2361 | upheap (heap, k); |
|
|
2362 | else |
|
|
2363 | downheap (heap, N, k); |
|
|
2364 | } |
|
|
2365 | |
|
|
2366 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
2367 | inline_size void |
|
|
2368 | reheap (ANHE *heap, int N) |
272 | { |
2369 | { |
273 | int i; |
2370 | int i; |
274 | |
2371 | |
|
|
2372 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
2373 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
275 | for (i = 0; i < pendingcnt; ++i) |
2374 | for (i = 0; i < N; ++i) |
276 | { |
2375 | upheap (heap, i + HEAP0); |
277 | ANPENDING *p = pendings + i; |
2376 | } |
278 | |
2377 | |
279 | if (p->w) |
2378 | /*****************************************************************************/ |
|
|
2379 | |
|
|
2380 | /* associate signal watchers to a signal signal */ |
|
|
2381 | typedef struct |
|
|
2382 | { |
|
|
2383 | EV_ATOMIC_T pending; |
|
|
2384 | #if EV_MULTIPLICITY |
|
|
2385 | EV_P; |
|
|
2386 | #endif |
|
|
2387 | WL head; |
|
|
2388 | } ANSIG; |
|
|
2389 | |
|
|
2390 | static ANSIG signals [EV_NSIG - 1]; |
|
|
2391 | |
|
|
2392 | /*****************************************************************************/ |
|
|
2393 | |
|
|
2394 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2395 | |
|
|
2396 | noinline ecb_cold |
|
|
2397 | static void |
|
|
2398 | evpipe_init (EV_P) |
|
|
2399 | { |
|
|
2400 | if (!ev_is_active (&pipe_w)) |
|
|
2401 | { |
|
|
2402 | int fds [2]; |
|
|
2403 | |
|
|
2404 | # if EV_USE_EVENTFD |
|
|
2405 | fds [0] = -1; |
|
|
2406 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2407 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2408 | fds [1] = eventfd (0, 0); |
|
|
2409 | |
|
|
2410 | if (fds [1] < 0) |
|
|
2411 | # endif |
280 | { |
2412 | { |
|
|
2413 | while (pipe (fds)) |
|
|
2414 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
2415 | |
|
|
2416 | fd_intern (fds [0]); |
|
|
2417 | } |
|
|
2418 | |
|
|
2419 | evpipe [0] = fds [0]; |
|
|
2420 | |
|
|
2421 | if (evpipe [1] < 0) |
|
|
2422 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2423 | else |
|
|
2424 | { |
|
|
2425 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2426 | /* so that evpipe_write can always rely on its value. */ |
|
|
2427 | /* this branch does not do anything sensible on windows, */ |
|
|
2428 | /* so must not be executed on windows */ |
|
|
2429 | |
|
|
2430 | dup2 (fds [1], evpipe [1]); |
|
|
2431 | close (fds [1]); |
|
|
2432 | } |
|
|
2433 | |
|
|
2434 | fd_intern (evpipe [1]); |
|
|
2435 | |
|
|
2436 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2437 | ev_io_start (EV_A_ &pipe_w); |
|
|
2438 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2439 | } |
|
|
2440 | } |
|
|
2441 | |
|
|
2442 | inline_speed void |
|
|
2443 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
2444 | { |
|
|
2445 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2446 | |
|
|
2447 | if (expect_true (*flag)) |
|
|
2448 | return; |
|
|
2449 | |
|
|
2450 | *flag = 1; |
|
|
2451 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2452 | |
|
|
2453 | pipe_write_skipped = 1; |
|
|
2454 | |
|
|
2455 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2456 | |
|
|
2457 | if (pipe_write_wanted) |
|
|
2458 | { |
|
|
2459 | int old_errno; |
|
|
2460 | |
|
|
2461 | pipe_write_skipped = 0; |
|
|
2462 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2463 | |
|
|
2464 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2465 | |
|
|
2466 | #if EV_USE_EVENTFD |
|
|
2467 | if (evpipe [0] < 0) |
|
|
2468 | { |
|
|
2469 | uint64_t counter = 1; |
|
|
2470 | write (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2471 | } |
|
|
2472 | else |
|
|
2473 | #endif |
|
|
2474 | { |
|
|
2475 | #ifdef _WIN32 |
|
|
2476 | WSABUF buf; |
|
|
2477 | DWORD sent; |
|
|
2478 | buf.buf = &buf; |
|
|
2479 | buf.len = 1; |
|
|
2480 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2481 | #else |
|
|
2482 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2483 | #endif |
|
|
2484 | } |
|
|
2485 | |
|
|
2486 | errno = old_errno; |
|
|
2487 | } |
|
|
2488 | } |
|
|
2489 | |
|
|
2490 | /* called whenever the libev signal pipe */ |
|
|
2491 | /* got some events (signal, async) */ |
|
|
2492 | static void |
|
|
2493 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
2494 | { |
|
|
2495 | int i; |
|
|
2496 | |
|
|
2497 | if (revents & EV_READ) |
|
|
2498 | { |
|
|
2499 | #if EV_USE_EVENTFD |
|
|
2500 | if (evpipe [0] < 0) |
|
|
2501 | { |
|
|
2502 | uint64_t counter; |
|
|
2503 | read (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2504 | } |
|
|
2505 | else |
|
|
2506 | #endif |
|
|
2507 | { |
|
|
2508 | char dummy[4]; |
|
|
2509 | #ifdef _WIN32 |
|
|
2510 | WSABUF buf; |
|
|
2511 | DWORD recvd; |
|
|
2512 | DWORD flags = 0; |
|
|
2513 | buf.buf = dummy; |
|
|
2514 | buf.len = sizeof (dummy); |
|
|
2515 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2516 | #else |
|
|
2517 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2518 | #endif |
|
|
2519 | } |
|
|
2520 | } |
|
|
2521 | |
|
|
2522 | pipe_write_skipped = 0; |
|
|
2523 | |
|
|
2524 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2525 | |
|
|
2526 | #if EV_SIGNAL_ENABLE |
|
|
2527 | if (sig_pending) |
|
|
2528 | { |
|
|
2529 | sig_pending = 0; |
|
|
2530 | |
|
|
2531 | ECB_MEMORY_FENCE; |
|
|
2532 | |
|
|
2533 | for (i = EV_NSIG - 1; i--; ) |
|
|
2534 | if (expect_false (signals [i].pending)) |
|
|
2535 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
2536 | } |
|
|
2537 | #endif |
|
|
2538 | |
|
|
2539 | #if EV_ASYNC_ENABLE |
|
|
2540 | if (async_pending) |
|
|
2541 | { |
|
|
2542 | async_pending = 0; |
|
|
2543 | |
|
|
2544 | ECB_MEMORY_FENCE; |
|
|
2545 | |
|
|
2546 | for (i = asynccnt; i--; ) |
|
|
2547 | if (asyncs [i]->sent) |
|
|
2548 | { |
|
|
2549 | asyncs [i]->sent = 0; |
|
|
2550 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2551 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
2552 | } |
|
|
2553 | } |
|
|
2554 | #endif |
|
|
2555 | } |
|
|
2556 | |
|
|
2557 | /*****************************************************************************/ |
|
|
2558 | |
|
|
2559 | void |
|
|
2560 | ev_feed_signal (int signum) EV_THROW |
|
|
2561 | { |
|
|
2562 | #if EV_MULTIPLICITY |
|
|
2563 | EV_P; |
|
|
2564 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2565 | EV_A = signals [signum - 1].loop; |
|
|
2566 | |
|
|
2567 | if (!EV_A) |
|
|
2568 | return; |
|
|
2569 | #endif |
|
|
2570 | |
|
|
2571 | signals [signum - 1].pending = 1; |
|
|
2572 | evpipe_write (EV_A_ &sig_pending); |
|
|
2573 | } |
|
|
2574 | |
|
|
2575 | static void |
|
|
2576 | ev_sighandler (int signum) |
|
|
2577 | { |
|
|
2578 | #ifdef _WIN32 |
|
|
2579 | signal (signum, ev_sighandler); |
|
|
2580 | #endif |
|
|
2581 | |
|
|
2582 | ev_feed_signal (signum); |
|
|
2583 | } |
|
|
2584 | |
|
|
2585 | noinline |
|
|
2586 | void |
|
|
2587 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
|
|
2588 | { |
|
|
2589 | WL w; |
|
|
2590 | |
|
|
2591 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2592 | return; |
|
|
2593 | |
|
|
2594 | --signum; |
|
|
2595 | |
|
|
2596 | #if EV_MULTIPLICITY |
|
|
2597 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
2598 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
2599 | |
|
|
2600 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
2601 | return; |
|
|
2602 | #endif |
|
|
2603 | |
|
|
2604 | signals [signum].pending = 0; |
|
|
2605 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2606 | |
|
|
2607 | for (w = signals [signum].head; w; w = w->next) |
|
|
2608 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
2609 | } |
|
|
2610 | |
|
|
2611 | #if EV_USE_SIGNALFD |
|
|
2612 | static void |
|
|
2613 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
2614 | { |
|
|
2615 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
2616 | |
|
|
2617 | for (;;) |
|
|
2618 | { |
|
|
2619 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
2620 | |
|
|
2621 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
2622 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
2623 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
2624 | |
|
|
2625 | if (res < (ssize_t)sizeof (si)) |
|
|
2626 | break; |
|
|
2627 | } |
|
|
2628 | } |
|
|
2629 | #endif |
|
|
2630 | |
|
|
2631 | #endif |
|
|
2632 | |
|
|
2633 | /*****************************************************************************/ |
|
|
2634 | |
|
|
2635 | #if EV_CHILD_ENABLE |
|
|
2636 | static WL childs [EV_PID_HASHSIZE]; |
|
|
2637 | |
|
|
2638 | static ev_signal childev; |
|
|
2639 | |
|
|
2640 | #ifndef WIFCONTINUED |
|
|
2641 | # define WIFCONTINUED(status) 0 |
|
|
2642 | #endif |
|
|
2643 | |
|
|
2644 | /* handle a single child status event */ |
|
|
2645 | inline_speed void |
|
|
2646 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
2647 | { |
|
|
2648 | ev_child *w; |
|
|
2649 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
2650 | |
|
|
2651 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2652 | { |
|
|
2653 | if ((w->pid == pid || !w->pid) |
|
|
2654 | && (!traced || (w->flags & 1))) |
|
|
2655 | { |
|
|
2656 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
2657 | w->rpid = pid; |
|
|
2658 | w->rstatus = status; |
|
|
2659 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
2660 | } |
|
|
2661 | } |
|
|
2662 | } |
|
|
2663 | |
|
|
2664 | #ifndef WCONTINUED |
|
|
2665 | # define WCONTINUED 0 |
|
|
2666 | #endif |
|
|
2667 | |
|
|
2668 | /* called on sigchld etc., calls waitpid */ |
|
|
2669 | static void |
|
|
2670 | childcb (EV_P_ ev_signal *sw, int revents) |
|
|
2671 | { |
|
|
2672 | int pid, status; |
|
|
2673 | |
|
|
2674 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
|
|
2675 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
2676 | if (!WCONTINUED |
|
|
2677 | || errno != EINVAL |
|
|
2678 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
2679 | return; |
|
|
2680 | |
|
|
2681 | /* make sure we are called again until all children have been reaped */ |
|
|
2682 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
2683 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
2684 | |
|
|
2685 | child_reap (EV_A_ pid, pid, status); |
|
|
2686 | if ((EV_PID_HASHSIZE) > 1) |
|
|
2687 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
2688 | } |
|
|
2689 | |
|
|
2690 | #endif |
|
|
2691 | |
|
|
2692 | /*****************************************************************************/ |
|
|
2693 | |
|
|
2694 | #if EV_USE_IOCP |
|
|
2695 | # include "ev_iocp.c" |
|
|
2696 | #endif |
|
|
2697 | #if EV_USE_PORT |
|
|
2698 | # include "ev_port.c" |
|
|
2699 | #endif |
|
|
2700 | #if EV_USE_KQUEUE |
|
|
2701 | # include "ev_kqueue.c" |
|
|
2702 | #endif |
|
|
2703 | #if EV_USE_EPOLL |
|
|
2704 | # include "ev_epoll.c" |
|
|
2705 | #endif |
|
|
2706 | #if EV_USE_POLL |
|
|
2707 | # include "ev_poll.c" |
|
|
2708 | #endif |
|
|
2709 | #if EV_USE_SELECT |
|
|
2710 | # include "ev_select.c" |
|
|
2711 | #endif |
|
|
2712 | |
|
|
2713 | ecb_cold int |
|
|
2714 | ev_version_major (void) EV_THROW |
|
|
2715 | { |
|
|
2716 | return EV_VERSION_MAJOR; |
|
|
2717 | } |
|
|
2718 | |
|
|
2719 | ecb_cold int |
|
|
2720 | ev_version_minor (void) EV_THROW |
|
|
2721 | { |
|
|
2722 | return EV_VERSION_MINOR; |
|
|
2723 | } |
|
|
2724 | |
|
|
2725 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
2726 | inline_size ecb_cold int |
|
|
2727 | enable_secure (void) |
|
|
2728 | { |
|
|
2729 | #ifdef _WIN32 |
|
|
2730 | return 0; |
|
|
2731 | #else |
|
|
2732 | return getuid () != geteuid () |
|
|
2733 | || getgid () != getegid (); |
|
|
2734 | #endif |
|
|
2735 | } |
|
|
2736 | |
|
|
2737 | ecb_cold |
|
|
2738 | unsigned int |
|
|
2739 | ev_supported_backends (void) EV_THROW |
|
|
2740 | { |
|
|
2741 | unsigned int flags = 0; |
|
|
2742 | |
|
|
2743 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
2744 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
2745 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2746 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
2747 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
2748 | |
|
|
2749 | return flags; |
|
|
2750 | } |
|
|
2751 | |
|
|
2752 | ecb_cold |
|
|
2753 | unsigned int |
|
|
2754 | ev_recommended_backends (void) EV_THROW |
|
|
2755 | { |
|
|
2756 | unsigned int flags = ev_supported_backends (); |
|
|
2757 | |
|
|
2758 | #ifndef __NetBSD__ |
|
|
2759 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
2760 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
2761 | flags &= ~EVBACKEND_KQUEUE; |
|
|
2762 | #endif |
|
|
2763 | #ifdef __APPLE__ |
|
|
2764 | /* only select works correctly on that "unix-certified" platform */ |
|
|
2765 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
2766 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
2767 | #endif |
|
|
2768 | #ifdef __FreeBSD__ |
|
|
2769 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2770 | #endif |
|
|
2771 | |
|
|
2772 | return flags; |
|
|
2773 | } |
|
|
2774 | |
|
|
2775 | ecb_cold |
|
|
2776 | unsigned int |
|
|
2777 | ev_embeddable_backends (void) EV_THROW |
|
|
2778 | { |
|
|
2779 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
2780 | |
|
|
2781 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
2782 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
2783 | flags &= ~EVBACKEND_EPOLL; |
|
|
2784 | |
|
|
2785 | return flags; |
|
|
2786 | } |
|
|
2787 | |
|
|
2788 | unsigned int |
|
|
2789 | ev_backend (EV_P) EV_THROW |
|
|
2790 | { |
|
|
2791 | return backend; |
|
|
2792 | } |
|
|
2793 | |
|
|
2794 | #if EV_FEATURE_API |
|
|
2795 | unsigned int |
|
|
2796 | ev_iteration (EV_P) EV_THROW |
|
|
2797 | { |
|
|
2798 | return loop_count; |
|
|
2799 | } |
|
|
2800 | |
|
|
2801 | unsigned int |
|
|
2802 | ev_depth (EV_P) EV_THROW |
|
|
2803 | { |
|
|
2804 | return loop_depth; |
|
|
2805 | } |
|
|
2806 | |
|
|
2807 | void |
|
|
2808 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2809 | { |
|
|
2810 | io_blocktime = interval; |
|
|
2811 | } |
|
|
2812 | |
|
|
2813 | void |
|
|
2814 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2815 | { |
|
|
2816 | timeout_blocktime = interval; |
|
|
2817 | } |
|
|
2818 | |
|
|
2819 | void |
|
|
2820 | ev_set_userdata (EV_P_ void *data) EV_THROW |
|
|
2821 | { |
|
|
2822 | userdata = data; |
|
|
2823 | } |
|
|
2824 | |
|
|
2825 | void * |
|
|
2826 | ev_userdata (EV_P) EV_THROW |
|
|
2827 | { |
|
|
2828 | return userdata; |
|
|
2829 | } |
|
|
2830 | |
|
|
2831 | void |
|
|
2832 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
|
|
2833 | { |
|
|
2834 | invoke_cb = invoke_pending_cb; |
|
|
2835 | } |
|
|
2836 | |
|
|
2837 | void |
|
|
2838 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW |
|
|
2839 | { |
|
|
2840 | release_cb = release; |
|
|
2841 | acquire_cb = acquire; |
|
|
2842 | } |
|
|
2843 | #endif |
|
|
2844 | |
|
|
2845 | /* initialise a loop structure, must be zero-initialised */ |
|
|
2846 | noinline ecb_cold |
|
|
2847 | static void |
|
|
2848 | loop_init (EV_P_ unsigned int flags) EV_THROW |
|
|
2849 | { |
|
|
2850 | if (!backend) |
|
|
2851 | { |
|
|
2852 | origflags = flags; |
|
|
2853 | |
|
|
2854 | #if EV_USE_REALTIME |
|
|
2855 | if (!have_realtime) |
|
|
2856 | { |
|
|
2857 | struct timespec ts; |
|
|
2858 | |
|
|
2859 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
2860 | have_realtime = 1; |
|
|
2861 | } |
|
|
2862 | #endif |
|
|
2863 | |
|
|
2864 | #if EV_USE_MONOTONIC |
|
|
2865 | if (!have_monotonic) |
|
|
2866 | { |
|
|
2867 | struct timespec ts; |
|
|
2868 | |
|
|
2869 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
2870 | have_monotonic = 1; |
|
|
2871 | } |
|
|
2872 | #endif |
|
|
2873 | |
|
|
2874 | /* pid check not overridable via env */ |
|
|
2875 | #ifndef _WIN32 |
|
|
2876 | if (flags & EVFLAG_FORKCHECK) |
|
|
2877 | curpid = getpid (); |
|
|
2878 | #endif |
|
|
2879 | |
|
|
2880 | if (!(flags & EVFLAG_NOENV) |
|
|
2881 | && !enable_secure () |
|
|
2882 | && getenv ("LIBEV_FLAGS")) |
|
|
2883 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
2884 | |
|
|
2885 | ev_rt_now = ev_time (); |
|
|
2886 | mn_now = get_clock (); |
|
|
2887 | now_floor = mn_now; |
|
|
2888 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2889 | #if EV_FEATURE_API |
|
|
2890 | invoke_cb = ev_invoke_pending; |
|
|
2891 | #endif |
|
|
2892 | |
|
|
2893 | io_blocktime = 0.; |
|
|
2894 | timeout_blocktime = 0.; |
|
|
2895 | backend = 0; |
|
|
2896 | backend_fd = -1; |
|
|
2897 | sig_pending = 0; |
|
|
2898 | #if EV_ASYNC_ENABLE |
|
|
2899 | async_pending = 0; |
|
|
2900 | #endif |
|
|
2901 | pipe_write_skipped = 0; |
|
|
2902 | pipe_write_wanted = 0; |
|
|
2903 | evpipe [0] = -1; |
|
|
2904 | evpipe [1] = -1; |
|
|
2905 | #if EV_USE_INOTIFY |
|
|
2906 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2907 | #endif |
|
|
2908 | #if EV_USE_SIGNALFD |
|
|
2909 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2910 | #endif |
|
|
2911 | |
|
|
2912 | if (!(flags & EVBACKEND_MASK)) |
|
|
2913 | flags |= ev_recommended_backends (); |
|
|
2914 | |
|
|
2915 | #if EV_USE_IOCP |
|
|
2916 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2917 | #endif |
|
|
2918 | #if EV_USE_PORT |
|
|
2919 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
2920 | #endif |
|
|
2921 | #if EV_USE_KQUEUE |
|
|
2922 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
2923 | #endif |
|
|
2924 | #if EV_USE_EPOLL |
|
|
2925 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
2926 | #endif |
|
|
2927 | #if EV_USE_POLL |
|
|
2928 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
2929 | #endif |
|
|
2930 | #if EV_USE_SELECT |
|
|
2931 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
2932 | #endif |
|
|
2933 | |
|
|
2934 | ev_prepare_init (&pending_w, pendingcb); |
|
|
2935 | |
|
|
2936 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2937 | ev_init (&pipe_w, pipecb); |
|
|
2938 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2939 | #endif |
|
|
2940 | } |
|
|
2941 | } |
|
|
2942 | |
|
|
2943 | /* free up a loop structure */ |
|
|
2944 | ecb_cold |
|
|
2945 | void |
|
|
2946 | ev_loop_destroy (EV_P) |
|
|
2947 | { |
|
|
2948 | int i; |
|
|
2949 | |
|
|
2950 | #if EV_MULTIPLICITY |
|
|
2951 | /* mimic free (0) */ |
|
|
2952 | if (!EV_A) |
|
|
2953 | return; |
|
|
2954 | #endif |
|
|
2955 | |
|
|
2956 | #if EV_CLEANUP_ENABLE |
|
|
2957 | /* queue cleanup watchers (and execute them) */ |
|
|
2958 | if (expect_false (cleanupcnt)) |
|
|
2959 | { |
|
|
2960 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
2961 | EV_INVOKE_PENDING; |
|
|
2962 | } |
|
|
2963 | #endif |
|
|
2964 | |
|
|
2965 | #if EV_CHILD_ENABLE |
|
|
2966 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
2967 | { |
|
|
2968 | ev_ref (EV_A); /* child watcher */ |
|
|
2969 | ev_signal_stop (EV_A_ &childev); |
|
|
2970 | } |
|
|
2971 | #endif |
|
|
2972 | |
|
|
2973 | if (ev_is_active (&pipe_w)) |
|
|
2974 | { |
|
|
2975 | /*ev_ref (EV_A);*/ |
|
|
2976 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
2977 | |
|
|
2978 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2979 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2980 | } |
|
|
2981 | |
|
|
2982 | #if EV_USE_SIGNALFD |
|
|
2983 | if (ev_is_active (&sigfd_w)) |
|
|
2984 | close (sigfd); |
|
|
2985 | #endif |
|
|
2986 | |
|
|
2987 | #if EV_USE_INOTIFY |
|
|
2988 | if (fs_fd >= 0) |
|
|
2989 | close (fs_fd); |
|
|
2990 | #endif |
|
|
2991 | |
|
|
2992 | if (backend_fd >= 0) |
|
|
2993 | close (backend_fd); |
|
|
2994 | |
|
|
2995 | #if EV_USE_IOCP |
|
|
2996 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
2997 | #endif |
|
|
2998 | #if EV_USE_PORT |
|
|
2999 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
3000 | #endif |
|
|
3001 | #if EV_USE_KQUEUE |
|
|
3002 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
3003 | #endif |
|
|
3004 | #if EV_USE_EPOLL |
|
|
3005 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
3006 | #endif |
|
|
3007 | #if EV_USE_POLL |
|
|
3008 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
3009 | #endif |
|
|
3010 | #if EV_USE_SELECT |
|
|
3011 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
3012 | #endif |
|
|
3013 | |
|
|
3014 | for (i = NUMPRI; i--; ) |
|
|
3015 | { |
|
|
3016 | array_free (pending, [i]); |
|
|
3017 | #if EV_IDLE_ENABLE |
|
|
3018 | array_free (idle, [i]); |
|
|
3019 | #endif |
|
|
3020 | } |
|
|
3021 | |
|
|
3022 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
3023 | |
|
|
3024 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
3025 | array_free (rfeed, EMPTY); |
|
|
3026 | array_free (fdchange, EMPTY); |
|
|
3027 | array_free (timer, EMPTY); |
|
|
3028 | #if EV_PERIODIC_ENABLE |
|
|
3029 | array_free (periodic, EMPTY); |
|
|
3030 | #endif |
|
|
3031 | #if EV_FORK_ENABLE |
|
|
3032 | array_free (fork, EMPTY); |
|
|
3033 | #endif |
|
|
3034 | #if EV_CLEANUP_ENABLE |
|
|
3035 | array_free (cleanup, EMPTY); |
|
|
3036 | #endif |
|
|
3037 | array_free (prepare, EMPTY); |
|
|
3038 | array_free (check, EMPTY); |
|
|
3039 | #if EV_ASYNC_ENABLE |
|
|
3040 | array_free (async, EMPTY); |
|
|
3041 | #endif |
|
|
3042 | |
|
|
3043 | backend = 0; |
|
|
3044 | |
|
|
3045 | #if EV_MULTIPLICITY |
|
|
3046 | if (ev_is_default_loop (EV_A)) |
|
|
3047 | #endif |
|
|
3048 | ev_default_loop_ptr = 0; |
|
|
3049 | #if EV_MULTIPLICITY |
|
|
3050 | else |
|
|
3051 | ev_free (EV_A); |
|
|
3052 | #endif |
|
|
3053 | } |
|
|
3054 | |
|
|
3055 | #if EV_USE_INOTIFY |
|
|
3056 | inline_size void infy_fork (EV_P); |
|
|
3057 | #endif |
|
|
3058 | |
|
|
3059 | inline_size void |
|
|
3060 | loop_fork (EV_P) |
|
|
3061 | { |
|
|
3062 | #if EV_USE_PORT |
|
|
3063 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
3064 | #endif |
|
|
3065 | #if EV_USE_KQUEUE |
|
|
3066 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
3067 | #endif |
|
|
3068 | #if EV_USE_EPOLL |
|
|
3069 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
3070 | #endif |
|
|
3071 | #if EV_USE_INOTIFY |
|
|
3072 | infy_fork (EV_A); |
|
|
3073 | #endif |
|
|
3074 | |
|
|
3075 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
3076 | if (ev_is_active (&pipe_w) && postfork != 2) |
|
|
3077 | { |
|
|
3078 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
3079 | |
|
|
3080 | ev_ref (EV_A); |
|
|
3081 | ev_io_stop (EV_A_ &pipe_w); |
|
|
3082 | |
|
|
3083 | if (evpipe [0] >= 0) |
|
|
3084 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
3085 | |
|
|
3086 | evpipe_init (EV_A); |
|
|
3087 | /* iterate over everything, in case we missed something before */ |
|
|
3088 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3089 | } |
|
|
3090 | #endif |
|
|
3091 | |
|
|
3092 | postfork = 0; |
|
|
3093 | } |
|
|
3094 | |
|
|
3095 | #if EV_MULTIPLICITY |
|
|
3096 | |
|
|
3097 | ecb_cold |
|
|
3098 | struct ev_loop * |
|
|
3099 | ev_loop_new (unsigned int flags) EV_THROW |
|
|
3100 | { |
|
|
3101 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
3102 | |
|
|
3103 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
3104 | loop_init (EV_A_ flags); |
|
|
3105 | |
|
|
3106 | if (ev_backend (EV_A)) |
|
|
3107 | return EV_A; |
|
|
3108 | |
|
|
3109 | ev_free (EV_A); |
|
|
3110 | return 0; |
|
|
3111 | } |
|
|
3112 | |
|
|
3113 | #endif /* multiplicity */ |
|
|
3114 | |
|
|
3115 | #if EV_VERIFY |
|
|
3116 | noinline ecb_cold |
|
|
3117 | static void |
|
|
3118 | verify_watcher (EV_P_ W w) |
|
|
3119 | { |
|
|
3120 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
3121 | |
|
|
3122 | if (w->pending) |
|
|
3123 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
3124 | } |
|
|
3125 | |
|
|
3126 | noinline ecb_cold |
|
|
3127 | static void |
|
|
3128 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
3129 | { |
|
|
3130 | int i; |
|
|
3131 | |
|
|
3132 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
3133 | { |
|
|
3134 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
3135 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
3136 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
3137 | |
|
|
3138 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
3139 | } |
|
|
3140 | } |
|
|
3141 | |
|
|
3142 | noinline ecb_cold |
|
|
3143 | static void |
|
|
3144 | array_verify (EV_P_ W *ws, int cnt) |
|
|
3145 | { |
|
|
3146 | while (cnt--) |
|
|
3147 | { |
|
|
3148 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
3149 | verify_watcher (EV_A_ ws [cnt]); |
|
|
3150 | } |
|
|
3151 | } |
|
|
3152 | #endif |
|
|
3153 | |
|
|
3154 | #if EV_FEATURE_API |
|
|
3155 | void ecb_cold |
|
|
3156 | ev_verify (EV_P) EV_THROW |
|
|
3157 | { |
|
|
3158 | #if EV_VERIFY |
|
|
3159 | int i; |
|
|
3160 | WL w, w2; |
|
|
3161 | |
|
|
3162 | assert (activecnt >= -1); |
|
|
3163 | |
|
|
3164 | assert (fdchangemax >= fdchangecnt); |
|
|
3165 | for (i = 0; i < fdchangecnt; ++i) |
|
|
3166 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
3167 | |
|
|
3168 | assert (anfdmax >= 0); |
|
|
3169 | for (i = 0; i < anfdmax; ++i) |
|
|
3170 | { |
|
|
3171 | int j = 0; |
|
|
3172 | |
|
|
3173 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
3174 | { |
|
|
3175 | verify_watcher (EV_A_ (W)w); |
|
|
3176 | |
|
|
3177 | if (j++ & 1) |
|
|
3178 | { |
|
|
3179 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
3180 | w2 = w2->next; |
|
|
3181 | } |
|
|
3182 | |
|
|
3183 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
3184 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
3185 | } |
|
|
3186 | } |
|
|
3187 | |
|
|
3188 | assert (timermax >= timercnt); |
|
|
3189 | verify_heap (EV_A_ timers, timercnt); |
|
|
3190 | |
|
|
3191 | #if EV_PERIODIC_ENABLE |
|
|
3192 | assert (periodicmax >= periodiccnt); |
|
|
3193 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
3194 | #endif |
|
|
3195 | |
|
|
3196 | for (i = NUMPRI; i--; ) |
|
|
3197 | { |
|
|
3198 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
3199 | #if EV_IDLE_ENABLE |
|
|
3200 | assert (idleall >= 0); |
|
|
3201 | assert (idlemax [i] >= idlecnt [i]); |
|
|
3202 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
3203 | #endif |
|
|
3204 | } |
|
|
3205 | |
|
|
3206 | #if EV_FORK_ENABLE |
|
|
3207 | assert (forkmax >= forkcnt); |
|
|
3208 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
3209 | #endif |
|
|
3210 | |
|
|
3211 | #if EV_CLEANUP_ENABLE |
|
|
3212 | assert (cleanupmax >= cleanupcnt); |
|
|
3213 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
3214 | #endif |
|
|
3215 | |
|
|
3216 | #if EV_ASYNC_ENABLE |
|
|
3217 | assert (asyncmax >= asynccnt); |
|
|
3218 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
3219 | #endif |
|
|
3220 | |
|
|
3221 | #if EV_PREPARE_ENABLE |
|
|
3222 | assert (preparemax >= preparecnt); |
|
|
3223 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
3224 | #endif |
|
|
3225 | |
|
|
3226 | #if EV_CHECK_ENABLE |
|
|
3227 | assert (checkmax >= checkcnt); |
|
|
3228 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
3229 | #endif |
|
|
3230 | |
|
|
3231 | # if 0 |
|
|
3232 | #if EV_CHILD_ENABLE |
|
|
3233 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
3234 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
3235 | #endif |
|
|
3236 | # endif |
|
|
3237 | #endif |
|
|
3238 | } |
|
|
3239 | #endif |
|
|
3240 | |
|
|
3241 | #if EV_MULTIPLICITY |
|
|
3242 | ecb_cold |
|
|
3243 | struct ev_loop * |
|
|
3244 | #else |
|
|
3245 | int |
|
|
3246 | #endif |
|
|
3247 | ev_default_loop (unsigned int flags) EV_THROW |
|
|
3248 | { |
|
|
3249 | if (!ev_default_loop_ptr) |
|
|
3250 | { |
|
|
3251 | #if EV_MULTIPLICITY |
|
|
3252 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
|
|
3253 | #else |
|
|
3254 | ev_default_loop_ptr = 1; |
|
|
3255 | #endif |
|
|
3256 | |
|
|
3257 | loop_init (EV_A_ flags); |
|
|
3258 | |
|
|
3259 | if (ev_backend (EV_A)) |
|
|
3260 | { |
|
|
3261 | #if EV_CHILD_ENABLE |
|
|
3262 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
3263 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
3264 | ev_signal_start (EV_A_ &childev); |
|
|
3265 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
3266 | #endif |
|
|
3267 | } |
|
|
3268 | else |
|
|
3269 | ev_default_loop_ptr = 0; |
|
|
3270 | } |
|
|
3271 | |
|
|
3272 | return ev_default_loop_ptr; |
|
|
3273 | } |
|
|
3274 | |
|
|
3275 | void |
|
|
3276 | ev_loop_fork (EV_P) EV_THROW |
|
|
3277 | { |
|
|
3278 | postfork = 1; |
|
|
3279 | } |
|
|
3280 | |
|
|
3281 | /*****************************************************************************/ |
|
|
3282 | |
|
|
3283 | void |
|
|
3284 | ev_invoke (EV_P_ void *w, int revents) |
|
|
3285 | { |
|
|
3286 | EV_CB_INVOKE ((W)w, revents); |
|
|
3287 | } |
|
|
3288 | |
|
|
3289 | unsigned int |
|
|
3290 | ev_pending_count (EV_P) EV_THROW |
|
|
3291 | { |
|
|
3292 | int pri; |
|
|
3293 | unsigned int count = 0; |
|
|
3294 | |
|
|
3295 | for (pri = NUMPRI; pri--; ) |
|
|
3296 | count += pendingcnt [pri]; |
|
|
3297 | |
|
|
3298 | return count; |
|
|
3299 | } |
|
|
3300 | |
|
|
3301 | noinline |
|
|
3302 | void |
|
|
3303 | ev_invoke_pending (EV_P) |
|
|
3304 | { |
|
|
3305 | pendingpri = NUMPRI; |
|
|
3306 | |
|
|
3307 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
3308 | { |
|
|
3309 | --pendingpri; |
|
|
3310 | |
|
|
3311 | while (pendingcnt [pendingpri]) |
|
|
3312 | { |
|
|
3313 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
|
|
3314 | |
281 | p->w->pending = 0; |
3315 | p->w->pending = 0; |
282 | p->w->cb (p->w, p->events); |
3316 | EV_CB_INVOKE (p->w, p->events); |
|
|
3317 | EV_FREQUENT_CHECK; |
283 | } |
3318 | } |
284 | } |
3319 | } |
285 | |
|
|
286 | pendingcnt = 0; |
|
|
287 | } |
3320 | } |
288 | |
3321 | |
|
|
3322 | #if EV_IDLE_ENABLE |
|
|
3323 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
3324 | /* only when higher priorities are idle" logic */ |
|
|
3325 | inline_size void |
|
|
3326 | idle_reify (EV_P) |
|
|
3327 | { |
|
|
3328 | if (expect_false (idleall)) |
|
|
3329 | { |
|
|
3330 | int pri; |
|
|
3331 | |
|
|
3332 | for (pri = NUMPRI; pri--; ) |
|
|
3333 | { |
|
|
3334 | if (pendingcnt [pri]) |
|
|
3335 | break; |
|
|
3336 | |
|
|
3337 | if (idlecnt [pri]) |
|
|
3338 | { |
|
|
3339 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
3340 | break; |
|
|
3341 | } |
|
|
3342 | } |
|
|
3343 | } |
|
|
3344 | } |
|
|
3345 | #endif |
|
|
3346 | |
|
|
3347 | /* make timers pending */ |
|
|
3348 | inline_size void |
|
|
3349 | timers_reify (EV_P) |
|
|
3350 | { |
|
|
3351 | EV_FREQUENT_CHECK; |
|
|
3352 | |
|
|
3353 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
3354 | { |
|
|
3355 | do |
|
|
3356 | { |
|
|
3357 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
3358 | |
|
|
3359 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
3360 | |
|
|
3361 | /* first reschedule or stop timer */ |
|
|
3362 | if (w->repeat) |
|
|
3363 | { |
|
|
3364 | ev_at (w) += w->repeat; |
|
|
3365 | if (ev_at (w) < mn_now) |
|
|
3366 | ev_at (w) = mn_now; |
|
|
3367 | |
|
|
3368 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
3369 | |
|
|
3370 | ANHE_at_cache (timers [HEAP0]); |
|
|
3371 | downheap (timers, timercnt, HEAP0); |
|
|
3372 | } |
|
|
3373 | else |
|
|
3374 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3375 | |
|
|
3376 | EV_FREQUENT_CHECK; |
|
|
3377 | feed_reverse (EV_A_ (W)w); |
|
|
3378 | } |
|
|
3379 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
3380 | |
|
|
3381 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
3382 | } |
|
|
3383 | } |
|
|
3384 | |
|
|
3385 | #if EV_PERIODIC_ENABLE |
|
|
3386 | |
|
|
3387 | noinline |
289 | static void |
3388 | static void |
290 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
3389 | periodic_recalc (EV_P_ ev_periodic *w) |
291 | { |
3390 | { |
292 | while (timercnt && timers [0]->at <= now) |
3391 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3392 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3393 | |
|
|
3394 | /* the above almost always errs on the low side */ |
|
|
3395 | while (at <= ev_rt_now) |
|
|
3396 | { |
|
|
3397 | ev_tstamp nat = at + w->interval; |
|
|
3398 | |
|
|
3399 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3400 | if (expect_false (nat == at)) |
|
|
3401 | { |
|
|
3402 | at = ev_rt_now; |
|
|
3403 | break; |
|
|
3404 | } |
|
|
3405 | |
|
|
3406 | at = nat; |
293 | { |
3407 | } |
294 | struct ev_timer *w = timers [0]; |
|
|
295 | |
3408 | |
|
|
3409 | ev_at (w) = at; |
|
|
3410 | } |
|
|
3411 | |
|
|
3412 | /* make periodics pending */ |
|
|
3413 | inline_size void |
|
|
3414 | periodics_reify (EV_P) |
|
|
3415 | { |
|
|
3416 | EV_FREQUENT_CHECK; |
|
|
3417 | |
|
|
3418 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
3419 | { |
|
|
3420 | do |
|
|
3421 | { |
|
|
3422 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
3423 | |
|
|
3424 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
3425 | |
296 | /* first reschedule or stop timer */ |
3426 | /* first reschedule or stop timer */ |
|
|
3427 | if (w->reschedule_cb) |
|
|
3428 | { |
|
|
3429 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3430 | |
|
|
3431 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
3432 | |
|
|
3433 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3434 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3435 | } |
|
|
3436 | else if (w->interval) |
|
|
3437 | { |
|
|
3438 | periodic_recalc (EV_A_ w); |
|
|
3439 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3440 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3441 | } |
|
|
3442 | else |
|
|
3443 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3444 | |
|
|
3445 | EV_FREQUENT_CHECK; |
|
|
3446 | feed_reverse (EV_A_ (W)w); |
|
|
3447 | } |
|
|
3448 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
3449 | |
|
|
3450 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
3451 | } |
|
|
3452 | } |
|
|
3453 | |
|
|
3454 | /* simply recalculate all periodics */ |
|
|
3455 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
3456 | noinline ecb_cold |
|
|
3457 | static void |
|
|
3458 | periodics_reschedule (EV_P) |
|
|
3459 | { |
|
|
3460 | int i; |
|
|
3461 | |
|
|
3462 | /* adjust periodics after time jump */ |
|
|
3463 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
3464 | { |
|
|
3465 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
3466 | |
|
|
3467 | if (w->reschedule_cb) |
|
|
3468 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3469 | else if (w->interval) |
|
|
3470 | periodic_recalc (EV_A_ w); |
|
|
3471 | |
|
|
3472 | ANHE_at_cache (periodics [i]); |
|
|
3473 | } |
|
|
3474 | |
|
|
3475 | reheap (periodics, periodiccnt); |
|
|
3476 | } |
|
|
3477 | #endif |
|
|
3478 | |
|
|
3479 | /* adjust all timers by a given offset */ |
|
|
3480 | noinline ecb_cold |
|
|
3481 | static void |
|
|
3482 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
3483 | { |
|
|
3484 | int i; |
|
|
3485 | |
|
|
3486 | for (i = 0; i < timercnt; ++i) |
|
|
3487 | { |
|
|
3488 | ANHE *he = timers + i + HEAP0; |
|
|
3489 | ANHE_w (*he)->at += adjust; |
|
|
3490 | ANHE_at_cache (*he); |
|
|
3491 | } |
|
|
3492 | } |
|
|
3493 | |
|
|
3494 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
3495 | /* also detect if there was a timejump, and act accordingly */ |
|
|
3496 | inline_speed void |
|
|
3497 | time_update (EV_P_ ev_tstamp max_block) |
|
|
3498 | { |
|
|
3499 | #if EV_USE_MONOTONIC |
|
|
3500 | if (expect_true (have_monotonic)) |
|
|
3501 | { |
|
|
3502 | int i; |
|
|
3503 | ev_tstamp odiff = rtmn_diff; |
|
|
3504 | |
|
|
3505 | mn_now = get_clock (); |
|
|
3506 | |
|
|
3507 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
3508 | /* interpolate in the meantime */ |
|
|
3509 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
3510 | { |
|
|
3511 | ev_rt_now = rtmn_diff + mn_now; |
|
|
3512 | return; |
|
|
3513 | } |
|
|
3514 | |
|
|
3515 | now_floor = mn_now; |
|
|
3516 | ev_rt_now = ev_time (); |
|
|
3517 | |
|
|
3518 | /* loop a few times, before making important decisions. |
|
|
3519 | * on the choice of "4": one iteration isn't enough, |
|
|
3520 | * in case we get preempted during the calls to |
|
|
3521 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
3522 | * to succeed in that case, though. and looping a few more times |
|
|
3523 | * doesn't hurt either as we only do this on time-jumps or |
|
|
3524 | * in the unlikely event of having been preempted here. |
|
|
3525 | */ |
|
|
3526 | for (i = 4; --i; ) |
|
|
3527 | { |
|
|
3528 | ev_tstamp diff; |
|
|
3529 | rtmn_diff = ev_rt_now - mn_now; |
|
|
3530 | |
|
|
3531 | diff = odiff - rtmn_diff; |
|
|
3532 | |
|
|
3533 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
|
|
3534 | return; /* all is well */ |
|
|
3535 | |
|
|
3536 | ev_rt_now = ev_time (); |
|
|
3537 | mn_now = get_clock (); |
|
|
3538 | now_floor = mn_now; |
|
|
3539 | } |
|
|
3540 | |
|
|
3541 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
3542 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
3543 | # if EV_PERIODIC_ENABLE |
|
|
3544 | periodics_reschedule (EV_A); |
|
|
3545 | # endif |
|
|
3546 | } |
|
|
3547 | else |
|
|
3548 | #endif |
|
|
3549 | { |
|
|
3550 | ev_rt_now = ev_time (); |
|
|
3551 | |
|
|
3552 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
3553 | { |
|
|
3554 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
3555 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
3556 | #if EV_PERIODIC_ENABLE |
|
|
3557 | periodics_reschedule (EV_A); |
|
|
3558 | #endif |
|
|
3559 | } |
|
|
3560 | |
|
|
3561 | mn_now = ev_rt_now; |
|
|
3562 | } |
|
|
3563 | } |
|
|
3564 | |
|
|
3565 | int |
|
|
3566 | ev_run (EV_P_ int flags) |
|
|
3567 | { |
|
|
3568 | #if EV_FEATURE_API |
|
|
3569 | ++loop_depth; |
|
|
3570 | #endif |
|
|
3571 | |
|
|
3572 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
3573 | |
|
|
3574 | loop_done = EVBREAK_CANCEL; |
|
|
3575 | |
|
|
3576 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
3577 | |
|
|
3578 | do |
|
|
3579 | { |
|
|
3580 | #if EV_VERIFY >= 2 |
|
|
3581 | ev_verify (EV_A); |
|
|
3582 | #endif |
|
|
3583 | |
|
|
3584 | #ifndef _WIN32 |
|
|
3585 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
3586 | if (expect_false (getpid () != curpid)) |
|
|
3587 | { |
|
|
3588 | curpid = getpid (); |
|
|
3589 | postfork = 1; |
|
|
3590 | } |
|
|
3591 | #endif |
|
|
3592 | |
|
|
3593 | #if EV_FORK_ENABLE |
|
|
3594 | /* we might have forked, so queue fork handlers */ |
|
|
3595 | if (expect_false (postfork)) |
|
|
3596 | if (forkcnt) |
|
|
3597 | { |
|
|
3598 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
3599 | EV_INVOKE_PENDING; |
|
|
3600 | } |
|
|
3601 | #endif |
|
|
3602 | |
|
|
3603 | #if EV_PREPARE_ENABLE |
|
|
3604 | /* queue prepare watchers (and execute them) */ |
|
|
3605 | if (expect_false (preparecnt)) |
|
|
3606 | { |
|
|
3607 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
3608 | EV_INVOKE_PENDING; |
|
|
3609 | } |
|
|
3610 | #endif |
|
|
3611 | |
|
|
3612 | if (expect_false (loop_done)) |
|
|
3613 | break; |
|
|
3614 | |
|
|
3615 | /* we might have forked, so reify kernel state if necessary */ |
|
|
3616 | if (expect_false (postfork)) |
|
|
3617 | loop_fork (EV_A); |
|
|
3618 | |
|
|
3619 | /* update fd-related kernel structures */ |
|
|
3620 | fd_reify (EV_A); |
|
|
3621 | |
|
|
3622 | /* calculate blocking time */ |
|
|
3623 | { |
|
|
3624 | ev_tstamp waittime = 0.; |
|
|
3625 | ev_tstamp sleeptime = 0.; |
|
|
3626 | |
|
|
3627 | /* remember old timestamp for io_blocktime calculation */ |
|
|
3628 | ev_tstamp prev_mn_now = mn_now; |
|
|
3629 | |
|
|
3630 | /* update time to cancel out callback processing overhead */ |
|
|
3631 | time_update (EV_A_ 1e100); |
|
|
3632 | |
|
|
3633 | /* from now on, we want a pipe-wake-up */ |
|
|
3634 | pipe_write_wanted = 1; |
|
|
3635 | |
|
|
3636 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3637 | |
|
|
3638 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
|
|
3639 | { |
|
|
3640 | waittime = MAX_BLOCKTIME; |
|
|
3641 | |
|
|
3642 | if (timercnt) |
|
|
3643 | { |
|
|
3644 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
|
|
3645 | if (waittime > to) waittime = to; |
|
|
3646 | } |
|
|
3647 | |
|
|
3648 | #if EV_PERIODIC_ENABLE |
|
|
3649 | if (periodiccnt) |
|
|
3650 | { |
|
|
3651 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
|
|
3652 | if (waittime > to) waittime = to; |
|
|
3653 | } |
|
|
3654 | #endif |
|
|
3655 | |
|
|
3656 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
3657 | if (expect_false (waittime < timeout_blocktime)) |
|
|
3658 | waittime = timeout_blocktime; |
|
|
3659 | |
|
|
3660 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3661 | /* to pass a minimum nonzero value to the backend */ |
|
|
3662 | if (expect_false (waittime < backend_mintime)) |
|
|
3663 | waittime = backend_mintime; |
|
|
3664 | |
|
|
3665 | /* extra check because io_blocktime is commonly 0 */ |
|
|
3666 | if (expect_false (io_blocktime)) |
|
|
3667 | { |
|
|
3668 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
3669 | |
|
|
3670 | if (sleeptime > waittime - backend_mintime) |
|
|
3671 | sleeptime = waittime - backend_mintime; |
|
|
3672 | |
|
|
3673 | if (expect_true (sleeptime > 0.)) |
|
|
3674 | { |
|
|
3675 | ev_sleep (sleeptime); |
|
|
3676 | waittime -= sleeptime; |
|
|
3677 | } |
|
|
3678 | } |
|
|
3679 | } |
|
|
3680 | |
|
|
3681 | #if EV_FEATURE_API |
|
|
3682 | ++loop_count; |
|
|
3683 | #endif |
|
|
3684 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
3685 | backend_poll (EV_A_ waittime); |
|
|
3686 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
3687 | |
|
|
3688 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3689 | |
|
|
3690 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3691 | if (pipe_write_skipped) |
|
|
3692 | { |
|
|
3693 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3694 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3695 | } |
|
|
3696 | |
|
|
3697 | |
|
|
3698 | /* update ev_rt_now, do magic */ |
|
|
3699 | time_update (EV_A_ waittime + sleeptime); |
|
|
3700 | } |
|
|
3701 | |
|
|
3702 | /* queue pending timers and reschedule them */ |
|
|
3703 | timers_reify (EV_A); /* relative timers called last */ |
|
|
3704 | #if EV_PERIODIC_ENABLE |
|
|
3705 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
3706 | #endif |
|
|
3707 | |
|
|
3708 | #if EV_IDLE_ENABLE |
|
|
3709 | /* queue idle watchers unless other events are pending */ |
|
|
3710 | idle_reify (EV_A); |
|
|
3711 | #endif |
|
|
3712 | |
|
|
3713 | #if EV_CHECK_ENABLE |
|
|
3714 | /* queue check watchers, to be executed first */ |
|
|
3715 | if (expect_false (checkcnt)) |
|
|
3716 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3717 | #endif |
|
|
3718 | |
|
|
3719 | EV_INVOKE_PENDING; |
|
|
3720 | } |
|
|
3721 | while (expect_true ( |
|
|
3722 | activecnt |
|
|
3723 | && !loop_done |
|
|
3724 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
3725 | )); |
|
|
3726 | |
|
|
3727 | if (loop_done == EVBREAK_ONE) |
|
|
3728 | loop_done = EVBREAK_CANCEL; |
|
|
3729 | |
|
|
3730 | #if EV_FEATURE_API |
|
|
3731 | --loop_depth; |
|
|
3732 | #endif |
|
|
3733 | |
|
|
3734 | return activecnt; |
|
|
3735 | } |
|
|
3736 | |
|
|
3737 | void |
|
|
3738 | ev_break (EV_P_ int how) EV_THROW |
|
|
3739 | { |
|
|
3740 | loop_done = how; |
|
|
3741 | } |
|
|
3742 | |
|
|
3743 | void |
|
|
3744 | ev_ref (EV_P) EV_THROW |
|
|
3745 | { |
|
|
3746 | ++activecnt; |
|
|
3747 | } |
|
|
3748 | |
|
|
3749 | void |
|
|
3750 | ev_unref (EV_P) EV_THROW |
|
|
3751 | { |
|
|
3752 | --activecnt; |
|
|
3753 | } |
|
|
3754 | |
|
|
3755 | void |
|
|
3756 | ev_now_update (EV_P) EV_THROW |
|
|
3757 | { |
|
|
3758 | time_update (EV_A_ 1e100); |
|
|
3759 | } |
|
|
3760 | |
|
|
3761 | void |
|
|
3762 | ev_suspend (EV_P) EV_THROW |
|
|
3763 | { |
|
|
3764 | ev_now_update (EV_A); |
|
|
3765 | } |
|
|
3766 | |
|
|
3767 | void |
|
|
3768 | ev_resume (EV_P) EV_THROW |
|
|
3769 | { |
|
|
3770 | ev_tstamp mn_prev = mn_now; |
|
|
3771 | |
|
|
3772 | ev_now_update (EV_A); |
|
|
3773 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
3774 | #if EV_PERIODIC_ENABLE |
|
|
3775 | /* TODO: really do this? */ |
|
|
3776 | periodics_reschedule (EV_A); |
|
|
3777 | #endif |
|
|
3778 | } |
|
|
3779 | |
|
|
3780 | /*****************************************************************************/ |
|
|
3781 | /* singly-linked list management, used when the expected list length is short */ |
|
|
3782 | |
|
|
3783 | inline_size void |
|
|
3784 | wlist_add (WL *head, WL elem) |
|
|
3785 | { |
|
|
3786 | elem->next = *head; |
|
|
3787 | *head = elem; |
|
|
3788 | } |
|
|
3789 | |
|
|
3790 | inline_size void |
|
|
3791 | wlist_del (WL *head, WL elem) |
|
|
3792 | { |
|
|
3793 | while (*head) |
|
|
3794 | { |
|
|
3795 | if (expect_true (*head == elem)) |
|
|
3796 | { |
|
|
3797 | *head = elem->next; |
|
|
3798 | break; |
|
|
3799 | } |
|
|
3800 | |
|
|
3801 | head = &(*head)->next; |
|
|
3802 | } |
|
|
3803 | } |
|
|
3804 | |
|
|
3805 | /* internal, faster, version of ev_clear_pending */ |
|
|
3806 | inline_speed void |
|
|
3807 | clear_pending (EV_P_ W w) |
|
|
3808 | { |
|
|
3809 | if (w->pending) |
|
|
3810 | { |
|
|
3811 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
|
|
3812 | w->pending = 0; |
|
|
3813 | } |
|
|
3814 | } |
|
|
3815 | |
|
|
3816 | int |
|
|
3817 | ev_clear_pending (EV_P_ void *w) EV_THROW |
|
|
3818 | { |
|
|
3819 | W w_ = (W)w; |
|
|
3820 | int pending = w_->pending; |
|
|
3821 | |
|
|
3822 | if (expect_true (pending)) |
|
|
3823 | { |
|
|
3824 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
3825 | p->w = (W)&pending_w; |
|
|
3826 | w_->pending = 0; |
|
|
3827 | return p->events; |
|
|
3828 | } |
|
|
3829 | else |
|
|
3830 | return 0; |
|
|
3831 | } |
|
|
3832 | |
|
|
3833 | inline_size void |
|
|
3834 | pri_adjust (EV_P_ W w) |
|
|
3835 | { |
|
|
3836 | int pri = ev_priority (w); |
|
|
3837 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
3838 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
3839 | ev_set_priority (w, pri); |
|
|
3840 | } |
|
|
3841 | |
|
|
3842 | inline_speed void |
|
|
3843 | ev_start (EV_P_ W w, int active) |
|
|
3844 | { |
|
|
3845 | pri_adjust (EV_A_ w); |
|
|
3846 | w->active = active; |
|
|
3847 | ev_ref (EV_A); |
|
|
3848 | } |
|
|
3849 | |
|
|
3850 | inline_size void |
|
|
3851 | ev_stop (EV_P_ W w) |
|
|
3852 | { |
|
|
3853 | ev_unref (EV_A); |
|
|
3854 | w->active = 0; |
|
|
3855 | } |
|
|
3856 | |
|
|
3857 | /*****************************************************************************/ |
|
|
3858 | |
|
|
3859 | noinline |
|
|
3860 | void |
|
|
3861 | ev_io_start (EV_P_ ev_io *w) EV_THROW |
|
|
3862 | { |
|
|
3863 | int fd = w->fd; |
|
|
3864 | |
|
|
3865 | if (expect_false (ev_is_active (w))) |
|
|
3866 | return; |
|
|
3867 | |
|
|
3868 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
3869 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
3870 | |
|
|
3871 | EV_FREQUENT_CHECK; |
|
|
3872 | |
|
|
3873 | ev_start (EV_A_ (W)w, 1); |
|
|
3874 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
|
|
3875 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
3876 | |
|
|
3877 | /* common bug, apparently */ |
|
|
3878 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
|
|
3879 | |
|
|
3880 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
3881 | w->events &= ~EV__IOFDSET; |
|
|
3882 | |
|
|
3883 | EV_FREQUENT_CHECK; |
|
|
3884 | } |
|
|
3885 | |
|
|
3886 | noinline |
|
|
3887 | void |
|
|
3888 | ev_io_stop (EV_P_ ev_io *w) EV_THROW |
|
|
3889 | { |
|
|
3890 | clear_pending (EV_A_ (W)w); |
|
|
3891 | if (expect_false (!ev_is_active (w))) |
|
|
3892 | return; |
|
|
3893 | |
|
|
3894 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
3895 | |
|
|
3896 | EV_FREQUENT_CHECK; |
|
|
3897 | |
|
|
3898 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
3899 | ev_stop (EV_A_ (W)w); |
|
|
3900 | |
|
|
3901 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
|
|
3902 | |
|
|
3903 | EV_FREQUENT_CHECK; |
|
|
3904 | } |
|
|
3905 | |
|
|
3906 | noinline |
|
|
3907 | void |
|
|
3908 | ev_timer_start (EV_P_ ev_timer *w) EV_THROW |
|
|
3909 | { |
|
|
3910 | if (expect_false (ev_is_active (w))) |
|
|
3911 | return; |
|
|
3912 | |
|
|
3913 | ev_at (w) += mn_now; |
|
|
3914 | |
|
|
3915 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
3916 | |
|
|
3917 | EV_FREQUENT_CHECK; |
|
|
3918 | |
|
|
3919 | ++timercnt; |
|
|
3920 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
3921 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
3922 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
3923 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
3924 | upheap (timers, ev_active (w)); |
|
|
3925 | |
|
|
3926 | EV_FREQUENT_CHECK; |
|
|
3927 | |
|
|
3928 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
3929 | } |
|
|
3930 | |
|
|
3931 | noinline |
|
|
3932 | void |
|
|
3933 | ev_timer_stop (EV_P_ ev_timer *w) EV_THROW |
|
|
3934 | { |
|
|
3935 | clear_pending (EV_A_ (W)w); |
|
|
3936 | if (expect_false (!ev_is_active (w))) |
|
|
3937 | return; |
|
|
3938 | |
|
|
3939 | EV_FREQUENT_CHECK; |
|
|
3940 | |
|
|
3941 | { |
|
|
3942 | int active = ev_active (w); |
|
|
3943 | |
|
|
3944 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
3945 | |
|
|
3946 | --timercnt; |
|
|
3947 | |
|
|
3948 | if (expect_true (active < timercnt + HEAP0)) |
|
|
3949 | { |
|
|
3950 | timers [active] = timers [timercnt + HEAP0]; |
|
|
3951 | adjustheap (timers, timercnt, active); |
|
|
3952 | } |
|
|
3953 | } |
|
|
3954 | |
|
|
3955 | ev_at (w) -= mn_now; |
|
|
3956 | |
|
|
3957 | ev_stop (EV_A_ (W)w); |
|
|
3958 | |
|
|
3959 | EV_FREQUENT_CHECK; |
|
|
3960 | } |
|
|
3961 | |
|
|
3962 | noinline |
|
|
3963 | void |
|
|
3964 | ev_timer_again (EV_P_ ev_timer *w) EV_THROW |
|
|
3965 | { |
|
|
3966 | EV_FREQUENT_CHECK; |
|
|
3967 | |
|
|
3968 | clear_pending (EV_A_ (W)w); |
|
|
3969 | |
|
|
3970 | if (ev_is_active (w)) |
|
|
3971 | { |
297 | if (w->repeat) |
3972 | if (w->repeat) |
298 | { |
3973 | { |
299 | if (w->is_abs) |
|
|
300 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
301 | else |
|
|
302 | w->at = now + w->repeat; |
3974 | ev_at (w) = mn_now + w->repeat; |
303 | |
3975 | ANHE_at_cache (timers [ev_active (w)]); |
304 | assert (w->at > now); |
|
|
305 | |
|
|
306 | downheap (timers, timercnt, 0); |
3976 | adjustheap (timers, timercnt, ev_active (w)); |
307 | } |
3977 | } |
308 | else |
3978 | else |
|
|
3979 | ev_timer_stop (EV_A_ w); |
|
|
3980 | } |
|
|
3981 | else if (w->repeat) |
|
|
3982 | { |
|
|
3983 | ev_at (w) = w->repeat; |
|
|
3984 | ev_timer_start (EV_A_ w); |
|
|
3985 | } |
|
|
3986 | |
|
|
3987 | EV_FREQUENT_CHECK; |
|
|
3988 | } |
|
|
3989 | |
|
|
3990 | ev_tstamp |
|
|
3991 | ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW |
|
|
3992 | { |
|
|
3993 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
3994 | } |
|
|
3995 | |
|
|
3996 | #if EV_PERIODIC_ENABLE |
|
|
3997 | noinline |
|
|
3998 | void |
|
|
3999 | ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW |
|
|
4000 | { |
|
|
4001 | if (expect_false (ev_is_active (w))) |
|
|
4002 | return; |
|
|
4003 | |
|
|
4004 | if (w->reschedule_cb) |
|
|
4005 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
4006 | else if (w->interval) |
|
|
4007 | { |
|
|
4008 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
4009 | periodic_recalc (EV_A_ w); |
|
|
4010 | } |
|
|
4011 | else |
|
|
4012 | ev_at (w) = w->offset; |
|
|
4013 | |
|
|
4014 | EV_FREQUENT_CHECK; |
|
|
4015 | |
|
|
4016 | ++periodiccnt; |
|
|
4017 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
|
|
4018 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
|
|
4019 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
4020 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
4021 | upheap (periodics, ev_active (w)); |
|
|
4022 | |
|
|
4023 | EV_FREQUENT_CHECK; |
|
|
4024 | |
|
|
4025 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
4026 | } |
|
|
4027 | |
|
|
4028 | noinline |
|
|
4029 | void |
|
|
4030 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW |
|
|
4031 | { |
|
|
4032 | clear_pending (EV_A_ (W)w); |
|
|
4033 | if (expect_false (!ev_is_active (w))) |
|
|
4034 | return; |
|
|
4035 | |
|
|
4036 | EV_FREQUENT_CHECK; |
|
|
4037 | |
|
|
4038 | { |
|
|
4039 | int active = ev_active (w); |
|
|
4040 | |
|
|
4041 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
4042 | |
|
|
4043 | --periodiccnt; |
|
|
4044 | |
|
|
4045 | if (expect_true (active < periodiccnt + HEAP0)) |
|
|
4046 | { |
|
|
4047 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
4048 | adjustheap (periodics, periodiccnt, active); |
|
|
4049 | } |
|
|
4050 | } |
|
|
4051 | |
|
|
4052 | ev_stop (EV_A_ (W)w); |
|
|
4053 | |
|
|
4054 | EV_FREQUENT_CHECK; |
|
|
4055 | } |
|
|
4056 | |
|
|
4057 | noinline |
|
|
4058 | void |
|
|
4059 | ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW |
|
|
4060 | { |
|
|
4061 | /* TODO: use adjustheap and recalculation */ |
|
|
4062 | ev_periodic_stop (EV_A_ w); |
|
|
4063 | ev_periodic_start (EV_A_ w); |
|
|
4064 | } |
|
|
4065 | #endif |
|
|
4066 | |
|
|
4067 | #ifndef SA_RESTART |
|
|
4068 | # define SA_RESTART 0 |
|
|
4069 | #endif |
|
|
4070 | |
|
|
4071 | #if EV_SIGNAL_ENABLE |
|
|
4072 | |
|
|
4073 | noinline |
|
|
4074 | void |
|
|
4075 | ev_signal_start (EV_P_ ev_signal *w) EV_THROW |
|
|
4076 | { |
|
|
4077 | if (expect_false (ev_is_active (w))) |
|
|
4078 | return; |
|
|
4079 | |
|
|
4080 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
4081 | |
|
|
4082 | #if EV_MULTIPLICITY |
|
|
4083 | assert (("libev: a signal must not be attached to two different loops", |
|
|
4084 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
4085 | |
|
|
4086 | signals [w->signum - 1].loop = EV_A; |
|
|
4087 | ECB_MEMORY_FENCE_RELEASE; |
|
|
4088 | #endif |
|
|
4089 | |
|
|
4090 | EV_FREQUENT_CHECK; |
|
|
4091 | |
|
|
4092 | #if EV_USE_SIGNALFD |
|
|
4093 | if (sigfd == -2) |
|
|
4094 | { |
|
|
4095 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
4096 | if (sigfd < 0 && errno == EINVAL) |
|
|
4097 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
4098 | |
|
|
4099 | if (sigfd >= 0) |
309 | { |
4100 | { |
310 | evtimer_stop (w); /* nonrepeating: stop timer */ |
4101 | fd_intern (sigfd); /* doing it twice will not hurt */ |
311 | --timercnt; /* maybe pass by reference instead? */ |
4102 | |
|
|
4103 | sigemptyset (&sigfd_set); |
|
|
4104 | |
|
|
4105 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
4106 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
4107 | ev_io_start (EV_A_ &sigfd_w); |
|
|
4108 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
312 | } |
4109 | } |
|
|
4110 | } |
313 | |
4111 | |
314 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
4112 | if (sigfd >= 0) |
|
|
4113 | { |
|
|
4114 | /* TODO: check .head */ |
|
|
4115 | sigaddset (&sigfd_set, w->signum); |
|
|
4116 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
4117 | |
|
|
4118 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4119 | } |
|
|
4120 | #endif |
|
|
4121 | |
|
|
4122 | ev_start (EV_A_ (W)w, 1); |
|
|
4123 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
4124 | |
|
|
4125 | if (!((WL)w)->next) |
|
|
4126 | # if EV_USE_SIGNALFD |
|
|
4127 | if (sigfd < 0) /*TODO*/ |
|
|
4128 | # endif |
|
|
4129 | { |
|
|
4130 | # ifdef _WIN32 |
|
|
4131 | evpipe_init (EV_A); |
|
|
4132 | |
|
|
4133 | signal (w->signum, ev_sighandler); |
|
|
4134 | # else |
|
|
4135 | struct sigaction sa; |
|
|
4136 | |
|
|
4137 | evpipe_init (EV_A); |
|
|
4138 | |
|
|
4139 | sa.sa_handler = ev_sighandler; |
|
|
4140 | sigfillset (&sa.sa_mask); |
|
|
4141 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
4142 | sigaction (w->signum, &sa, 0); |
|
|
4143 | |
|
|
4144 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
4145 | { |
|
|
4146 | sigemptyset (&sa.sa_mask); |
|
|
4147 | sigaddset (&sa.sa_mask, w->signum); |
|
|
4148 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
4149 | } |
|
|
4150 | #endif |
315 | } |
4151 | } |
316 | } |
|
|
317 | |
4152 | |
|
|
4153 | EV_FREQUENT_CHECK; |
|
|
4154 | } |
|
|
4155 | |
|
|
4156 | noinline |
|
|
4157 | void |
|
|
4158 | ev_signal_stop (EV_P_ ev_signal *w) EV_THROW |
|
|
4159 | { |
|
|
4160 | clear_pending (EV_A_ (W)w); |
|
|
4161 | if (expect_false (!ev_is_active (w))) |
|
|
4162 | return; |
|
|
4163 | |
|
|
4164 | EV_FREQUENT_CHECK; |
|
|
4165 | |
|
|
4166 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
4167 | ev_stop (EV_A_ (W)w); |
|
|
4168 | |
|
|
4169 | if (!signals [w->signum - 1].head) |
|
|
4170 | { |
|
|
4171 | #if EV_MULTIPLICITY |
|
|
4172 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
4173 | #endif |
|
|
4174 | #if EV_USE_SIGNALFD |
|
|
4175 | if (sigfd >= 0) |
|
|
4176 | { |
|
|
4177 | sigset_t ss; |
|
|
4178 | |
|
|
4179 | sigemptyset (&ss); |
|
|
4180 | sigaddset (&ss, w->signum); |
|
|
4181 | sigdelset (&sigfd_set, w->signum); |
|
|
4182 | |
|
|
4183 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4184 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
4185 | } |
|
|
4186 | else |
|
|
4187 | #endif |
|
|
4188 | signal (w->signum, SIG_DFL); |
|
|
4189 | } |
|
|
4190 | |
|
|
4191 | EV_FREQUENT_CHECK; |
|
|
4192 | } |
|
|
4193 | |
|
|
4194 | #endif |
|
|
4195 | |
|
|
4196 | #if EV_CHILD_ENABLE |
|
|
4197 | |
|
|
4198 | void |
|
|
4199 | ev_child_start (EV_P_ ev_child *w) EV_THROW |
|
|
4200 | { |
|
|
4201 | #if EV_MULTIPLICITY |
|
|
4202 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
4203 | #endif |
|
|
4204 | if (expect_false (ev_is_active (w))) |
|
|
4205 | return; |
|
|
4206 | |
|
|
4207 | EV_FREQUENT_CHECK; |
|
|
4208 | |
|
|
4209 | ev_start (EV_A_ (W)w, 1); |
|
|
4210 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
4211 | |
|
|
4212 | EV_FREQUENT_CHECK; |
|
|
4213 | } |
|
|
4214 | |
|
|
4215 | void |
|
|
4216 | ev_child_stop (EV_P_ ev_child *w) EV_THROW |
|
|
4217 | { |
|
|
4218 | clear_pending (EV_A_ (W)w); |
|
|
4219 | if (expect_false (!ev_is_active (w))) |
|
|
4220 | return; |
|
|
4221 | |
|
|
4222 | EV_FREQUENT_CHECK; |
|
|
4223 | |
|
|
4224 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
4225 | ev_stop (EV_A_ (W)w); |
|
|
4226 | |
|
|
4227 | EV_FREQUENT_CHECK; |
|
|
4228 | } |
|
|
4229 | |
|
|
4230 | #endif |
|
|
4231 | |
|
|
4232 | #if EV_STAT_ENABLE |
|
|
4233 | |
|
|
4234 | # ifdef _WIN32 |
|
|
4235 | # undef lstat |
|
|
4236 | # define lstat(a,b) _stati64 (a,b) |
|
|
4237 | # endif |
|
|
4238 | |
|
|
4239 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
4240 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
4241 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
4242 | |
|
|
4243 | noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
4244 | |
|
|
4245 | #if EV_USE_INOTIFY |
|
|
4246 | |
|
|
4247 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
4248 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
4249 | |
|
|
4250 | noinline |
318 | static void |
4251 | static void |
319 | time_update () |
4252 | infy_add (EV_P_ ev_stat *w) |
320 | { |
4253 | { |
321 | int i; |
4254 | w->wd = inotify_add_watch (fs_fd, w->path, |
322 | ev_now = ev_time (); |
4255 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4256 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4257 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
323 | |
4258 | |
324 | if (have_monotonic) |
4259 | if (w->wd >= 0) |
|
|
4260 | { |
|
|
4261 | struct statfs sfs; |
|
|
4262 | |
|
|
4263 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
4264 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
4265 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
4266 | |
|
|
4267 | if (!fs_2625) |
|
|
4268 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4269 | else if (!statfs (w->path, &sfs) |
|
|
4270 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4271 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4272 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
4273 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4274 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4275 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4276 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
4277 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4278 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
4279 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
4280 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
4281 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
4282 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
4283 | else |
|
|
4284 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
325 | { |
4285 | } |
326 | ev_tstamp odiff = diff; |
4286 | else |
|
|
4287 | { |
|
|
4288 | /* can't use inotify, continue to stat */ |
|
|
4289 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
327 | |
4290 | |
328 | /* detecting time jumps is much more difficult */ |
4291 | /* if path is not there, monitor some parent directory for speedup hints */ |
329 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
4292 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
4293 | /* but an efficiency issue only */ |
|
|
4294 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
330 | { |
4295 | { |
331 | now = get_clock (); |
4296 | char path [4096]; |
332 | diff = ev_now - now; |
4297 | strcpy (path, w->path); |
333 | |
4298 | |
334 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
4299 | do |
335 | return; /* all is well */ |
4300 | { |
|
|
4301 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
4302 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
336 | |
4303 | |
337 | ev_now = ev_time (); |
4304 | char *pend = strrchr (path, '/'); |
|
|
4305 | |
|
|
4306 | if (!pend || pend == path) |
|
|
4307 | break; |
|
|
4308 | |
|
|
4309 | *pend = 0; |
|
|
4310 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
4311 | } |
|
|
4312 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
338 | } |
4313 | } |
|
|
4314 | } |
339 | |
4315 | |
340 | /* time jump detected, reschedule atimers */ |
4316 | if (w->wd >= 0) |
341 | for (i = 0; i < atimercnt; ++i) |
4317 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4318 | |
|
|
4319 | /* now re-arm timer, if required */ |
|
|
4320 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4321 | ev_timer_again (EV_A_ &w->timer); |
|
|
4322 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4323 | } |
|
|
4324 | |
|
|
4325 | noinline |
|
|
4326 | static void |
|
|
4327 | infy_del (EV_P_ ev_stat *w) |
|
|
4328 | { |
|
|
4329 | int slot; |
|
|
4330 | int wd = w->wd; |
|
|
4331 | |
|
|
4332 | if (wd < 0) |
|
|
4333 | return; |
|
|
4334 | |
|
|
4335 | w->wd = -2; |
|
|
4336 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
4337 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
4338 | |
|
|
4339 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
4340 | inotify_rm_watch (fs_fd, wd); |
|
|
4341 | } |
|
|
4342 | |
|
|
4343 | noinline |
|
|
4344 | static void |
|
|
4345 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
4346 | { |
|
|
4347 | if (slot < 0) |
|
|
4348 | /* overflow, need to check for all hash slots */ |
|
|
4349 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4350 | infy_wd (EV_A_ slot, wd, ev); |
|
|
4351 | else |
|
|
4352 | { |
|
|
4353 | WL w_; |
|
|
4354 | |
|
|
4355 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
342 | { |
4356 | { |
343 | struct ev_timer *w = atimers [i]; |
4357 | ev_stat *w = (ev_stat *)w_; |
344 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
4358 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
4359 | |
|
|
4360 | if (w->wd == wd || wd == -1) |
|
|
4361 | { |
|
|
4362 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
4363 | { |
|
|
4364 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4365 | w->wd = -1; |
|
|
4366 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4367 | } |
|
|
4368 | |
|
|
4369 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
4370 | } |
345 | } |
4371 | } |
346 | } |
4372 | } |
|
|
4373 | } |
|
|
4374 | |
|
|
4375 | static void |
|
|
4376 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
4377 | { |
|
|
4378 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
4379 | int ofs; |
|
|
4380 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
4381 | |
|
|
4382 | for (ofs = 0; ofs < len; ) |
|
|
4383 | { |
|
|
4384 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
4385 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4386 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
4387 | } |
|
|
4388 | } |
|
|
4389 | |
|
|
4390 | inline_size ecb_cold |
|
|
4391 | void |
|
|
4392 | ev_check_2625 (EV_P) |
|
|
4393 | { |
|
|
4394 | /* kernels < 2.6.25 are borked |
|
|
4395 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
4396 | */ |
|
|
4397 | if (ev_linux_version () < 0x020619) |
|
|
4398 | return; |
|
|
4399 | |
|
|
4400 | fs_2625 = 1; |
|
|
4401 | } |
|
|
4402 | |
|
|
4403 | inline_size int |
|
|
4404 | infy_newfd (void) |
|
|
4405 | { |
|
|
4406 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4407 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4408 | if (fd >= 0) |
|
|
4409 | return fd; |
|
|
4410 | #endif |
|
|
4411 | return inotify_init (); |
|
|
4412 | } |
|
|
4413 | |
|
|
4414 | inline_size void |
|
|
4415 | infy_init (EV_P) |
|
|
4416 | { |
|
|
4417 | if (fs_fd != -2) |
|
|
4418 | return; |
|
|
4419 | |
|
|
4420 | fs_fd = -1; |
|
|
4421 | |
|
|
4422 | ev_check_2625 (EV_A); |
|
|
4423 | |
|
|
4424 | fs_fd = infy_newfd (); |
|
|
4425 | |
|
|
4426 | if (fs_fd >= 0) |
|
|
4427 | { |
|
|
4428 | fd_intern (fs_fd); |
|
|
4429 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
4430 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
4431 | ev_io_start (EV_A_ &fs_w); |
|
|
4432 | ev_unref (EV_A); |
|
|
4433 | } |
|
|
4434 | } |
|
|
4435 | |
|
|
4436 | inline_size void |
|
|
4437 | infy_fork (EV_P) |
|
|
4438 | { |
|
|
4439 | int slot; |
|
|
4440 | |
|
|
4441 | if (fs_fd < 0) |
|
|
4442 | return; |
|
|
4443 | |
|
|
4444 | ev_ref (EV_A); |
|
|
4445 | ev_io_stop (EV_A_ &fs_w); |
|
|
4446 | close (fs_fd); |
|
|
4447 | fs_fd = infy_newfd (); |
|
|
4448 | |
|
|
4449 | if (fs_fd >= 0) |
|
|
4450 | { |
|
|
4451 | fd_intern (fs_fd); |
|
|
4452 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4453 | ev_io_start (EV_A_ &fs_w); |
|
|
4454 | ev_unref (EV_A); |
|
|
4455 | } |
|
|
4456 | |
|
|
4457 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4458 | { |
|
|
4459 | WL w_ = fs_hash [slot].head; |
|
|
4460 | fs_hash [slot].head = 0; |
|
|
4461 | |
|
|
4462 | while (w_) |
|
|
4463 | { |
|
|
4464 | ev_stat *w = (ev_stat *)w_; |
|
|
4465 | w_ = w_->next; /* lets us add this watcher */ |
|
|
4466 | |
|
|
4467 | w->wd = -1; |
|
|
4468 | |
|
|
4469 | if (fs_fd >= 0) |
|
|
4470 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4471 | else |
|
|
4472 | { |
|
|
4473 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4474 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4475 | ev_timer_again (EV_A_ &w->timer); |
|
|
4476 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4477 | } |
|
|
4478 | } |
|
|
4479 | } |
|
|
4480 | } |
|
|
4481 | |
|
|
4482 | #endif |
|
|
4483 | |
|
|
4484 | #ifdef _WIN32 |
|
|
4485 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
4486 | #else |
|
|
4487 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
4488 | #endif |
|
|
4489 | |
|
|
4490 | void |
|
|
4491 | ev_stat_stat (EV_P_ ev_stat *w) EV_THROW |
|
|
4492 | { |
|
|
4493 | if (lstat (w->path, &w->attr) < 0) |
|
|
4494 | w->attr.st_nlink = 0; |
|
|
4495 | else if (!w->attr.st_nlink) |
|
|
4496 | w->attr.st_nlink = 1; |
|
|
4497 | } |
|
|
4498 | |
|
|
4499 | noinline |
|
|
4500 | static void |
|
|
4501 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
4502 | { |
|
|
4503 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
4504 | |
|
|
4505 | ev_statdata prev = w->attr; |
|
|
4506 | ev_stat_stat (EV_A_ w); |
|
|
4507 | |
|
|
4508 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
4509 | if ( |
|
|
4510 | prev.st_dev != w->attr.st_dev |
|
|
4511 | || prev.st_ino != w->attr.st_ino |
|
|
4512 | || prev.st_mode != w->attr.st_mode |
|
|
4513 | || prev.st_nlink != w->attr.st_nlink |
|
|
4514 | || prev.st_uid != w->attr.st_uid |
|
|
4515 | || prev.st_gid != w->attr.st_gid |
|
|
4516 | || prev.st_rdev != w->attr.st_rdev |
|
|
4517 | || prev.st_size != w->attr.st_size |
|
|
4518 | || prev.st_atime != w->attr.st_atime |
|
|
4519 | || prev.st_mtime != w->attr.st_mtime |
|
|
4520 | || prev.st_ctime != w->attr.st_ctime |
|
|
4521 | ) { |
|
|
4522 | /* we only update w->prev on actual differences */ |
|
|
4523 | /* in case we test more often than invoke the callback, */ |
|
|
4524 | /* to ensure that prev is always different to attr */ |
|
|
4525 | w->prev = prev; |
|
|
4526 | |
|
|
4527 | #if EV_USE_INOTIFY |
|
|
4528 | if (fs_fd >= 0) |
|
|
4529 | { |
|
|
4530 | infy_del (EV_A_ w); |
|
|
4531 | infy_add (EV_A_ w); |
|
|
4532 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
4533 | } |
|
|
4534 | #endif |
|
|
4535 | |
|
|
4536 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
4537 | } |
|
|
4538 | } |
|
|
4539 | |
|
|
4540 | void |
|
|
4541 | ev_stat_start (EV_P_ ev_stat *w) EV_THROW |
|
|
4542 | { |
|
|
4543 | if (expect_false (ev_is_active (w))) |
|
|
4544 | return; |
|
|
4545 | |
|
|
4546 | ev_stat_stat (EV_A_ w); |
|
|
4547 | |
|
|
4548 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
4549 | w->interval = MIN_STAT_INTERVAL; |
|
|
4550 | |
|
|
4551 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
4552 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
4553 | |
|
|
4554 | #if EV_USE_INOTIFY |
|
|
4555 | infy_init (EV_A); |
|
|
4556 | |
|
|
4557 | if (fs_fd >= 0) |
|
|
4558 | infy_add (EV_A_ w); |
347 | else |
4559 | else |
|
|
4560 | #endif |
|
|
4561 | { |
|
|
4562 | ev_timer_again (EV_A_ &w->timer); |
|
|
4563 | ev_unref (EV_A); |
|
|
4564 | } |
|
|
4565 | |
|
|
4566 | ev_start (EV_A_ (W)w, 1); |
|
|
4567 | |
|
|
4568 | EV_FREQUENT_CHECK; |
|
|
4569 | } |
|
|
4570 | |
|
|
4571 | void |
|
|
4572 | ev_stat_stop (EV_P_ ev_stat *w) EV_THROW |
|
|
4573 | { |
|
|
4574 | clear_pending (EV_A_ (W)w); |
|
|
4575 | if (expect_false (!ev_is_active (w))) |
|
|
4576 | return; |
|
|
4577 | |
|
|
4578 | EV_FREQUENT_CHECK; |
|
|
4579 | |
|
|
4580 | #if EV_USE_INOTIFY |
|
|
4581 | infy_del (EV_A_ w); |
|
|
4582 | #endif |
|
|
4583 | |
|
|
4584 | if (ev_is_active (&w->timer)) |
|
|
4585 | { |
|
|
4586 | ev_ref (EV_A); |
|
|
4587 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4588 | } |
|
|
4589 | |
|
|
4590 | ev_stop (EV_A_ (W)w); |
|
|
4591 | |
|
|
4592 | EV_FREQUENT_CHECK; |
|
|
4593 | } |
|
|
4594 | #endif |
|
|
4595 | |
|
|
4596 | #if EV_IDLE_ENABLE |
|
|
4597 | void |
|
|
4598 | ev_idle_start (EV_P_ ev_idle *w) EV_THROW |
|
|
4599 | { |
|
|
4600 | if (expect_false (ev_is_active (w))) |
|
|
4601 | return; |
|
|
4602 | |
|
|
4603 | pri_adjust (EV_A_ (W)w); |
|
|
4604 | |
|
|
4605 | EV_FREQUENT_CHECK; |
|
|
4606 | |
|
|
4607 | { |
|
|
4608 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
4609 | |
|
|
4610 | ++idleall; |
|
|
4611 | ev_start (EV_A_ (W)w, active); |
|
|
4612 | |
|
|
4613 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
4614 | idles [ABSPRI (w)][active - 1] = w; |
|
|
4615 | } |
|
|
4616 | |
|
|
4617 | EV_FREQUENT_CHECK; |
|
|
4618 | } |
|
|
4619 | |
|
|
4620 | void |
|
|
4621 | ev_idle_stop (EV_P_ ev_idle *w) EV_THROW |
|
|
4622 | { |
|
|
4623 | clear_pending (EV_A_ (W)w); |
|
|
4624 | if (expect_false (!ev_is_active (w))) |
|
|
4625 | return; |
|
|
4626 | |
|
|
4627 | EV_FREQUENT_CHECK; |
|
|
4628 | |
|
|
4629 | { |
|
|
4630 | int active = ev_active (w); |
|
|
4631 | |
|
|
4632 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
4633 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
4634 | |
|
|
4635 | ev_stop (EV_A_ (W)w); |
|
|
4636 | --idleall; |
|
|
4637 | } |
|
|
4638 | |
|
|
4639 | EV_FREQUENT_CHECK; |
|
|
4640 | } |
|
|
4641 | #endif |
|
|
4642 | |
|
|
4643 | #if EV_PREPARE_ENABLE |
|
|
4644 | void |
|
|
4645 | ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW |
|
|
4646 | { |
|
|
4647 | if (expect_false (ev_is_active (w))) |
|
|
4648 | return; |
|
|
4649 | |
|
|
4650 | EV_FREQUENT_CHECK; |
|
|
4651 | |
|
|
4652 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
4653 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
4654 | prepares [preparecnt - 1] = w; |
|
|
4655 | |
|
|
4656 | EV_FREQUENT_CHECK; |
|
|
4657 | } |
|
|
4658 | |
|
|
4659 | void |
|
|
4660 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW |
|
|
4661 | { |
|
|
4662 | clear_pending (EV_A_ (W)w); |
|
|
4663 | if (expect_false (!ev_is_active (w))) |
|
|
4664 | return; |
|
|
4665 | |
|
|
4666 | EV_FREQUENT_CHECK; |
|
|
4667 | |
|
|
4668 | { |
|
|
4669 | int active = ev_active (w); |
|
|
4670 | |
|
|
4671 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
4672 | ev_active (prepares [active - 1]) = active; |
|
|
4673 | } |
|
|
4674 | |
|
|
4675 | ev_stop (EV_A_ (W)w); |
|
|
4676 | |
|
|
4677 | EV_FREQUENT_CHECK; |
|
|
4678 | } |
|
|
4679 | #endif |
|
|
4680 | |
|
|
4681 | #if EV_CHECK_ENABLE |
|
|
4682 | void |
|
|
4683 | ev_check_start (EV_P_ ev_check *w) EV_THROW |
|
|
4684 | { |
|
|
4685 | if (expect_false (ev_is_active (w))) |
|
|
4686 | return; |
|
|
4687 | |
|
|
4688 | EV_FREQUENT_CHECK; |
|
|
4689 | |
|
|
4690 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
4691 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
4692 | checks [checkcnt - 1] = w; |
|
|
4693 | |
|
|
4694 | EV_FREQUENT_CHECK; |
|
|
4695 | } |
|
|
4696 | |
|
|
4697 | void |
|
|
4698 | ev_check_stop (EV_P_ ev_check *w) EV_THROW |
|
|
4699 | { |
|
|
4700 | clear_pending (EV_A_ (W)w); |
|
|
4701 | if (expect_false (!ev_is_active (w))) |
|
|
4702 | return; |
|
|
4703 | |
|
|
4704 | EV_FREQUENT_CHECK; |
|
|
4705 | |
|
|
4706 | { |
|
|
4707 | int active = ev_active (w); |
|
|
4708 | |
|
|
4709 | checks [active - 1] = checks [--checkcnt]; |
|
|
4710 | ev_active (checks [active - 1]) = active; |
|
|
4711 | } |
|
|
4712 | |
|
|
4713 | ev_stop (EV_A_ (W)w); |
|
|
4714 | |
|
|
4715 | EV_FREQUENT_CHECK; |
|
|
4716 | } |
|
|
4717 | #endif |
|
|
4718 | |
|
|
4719 | #if EV_EMBED_ENABLE |
|
|
4720 | noinline |
|
|
4721 | void |
|
|
4722 | ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW |
|
|
4723 | { |
|
|
4724 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4725 | } |
|
|
4726 | |
|
|
4727 | static void |
|
|
4728 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
4729 | { |
|
|
4730 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
4731 | |
|
|
4732 | if (ev_cb (w)) |
|
|
4733 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
4734 | else |
|
|
4735 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4736 | } |
|
|
4737 | |
|
|
4738 | static void |
|
|
4739 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
4740 | { |
|
|
4741 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
4742 | |
|
|
4743 | { |
|
|
4744 | EV_P = w->other; |
|
|
4745 | |
|
|
4746 | while (fdchangecnt) |
348 | { |
4747 | { |
349 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
350 | /* time jump detected, adjust rtimers */ |
|
|
351 | for (i = 0; i < rtimercnt; ++i) |
|
|
352 | rtimers [i]->at += ev_now - now; |
|
|
353 | |
|
|
354 | now = ev_now; |
|
|
355 | } |
|
|
356 | } |
|
|
357 | |
|
|
358 | int ev_loop_done; |
|
|
359 | |
|
|
360 | void ev_loop (int flags) |
|
|
361 | { |
|
|
362 | double block; |
|
|
363 | ev_loop_done = flags & EVLOOP_ONESHOT; |
|
|
364 | |
|
|
365 | do |
|
|
366 | { |
|
|
367 | /* update fd-related kernel structures */ |
|
|
368 | fd_reify (); |
4748 | fd_reify (EV_A); |
|
|
4749 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4750 | } |
|
|
4751 | } |
|
|
4752 | } |
369 | |
4753 | |
370 | /* calculate blocking time */ |
4754 | static void |
371 | if (flags & EVLOOP_NONBLOCK) |
4755 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
372 | block = 0.; |
4756 | { |
|
|
4757 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
4758 | |
|
|
4759 | ev_embed_stop (EV_A_ w); |
|
|
4760 | |
|
|
4761 | { |
|
|
4762 | EV_P = w->other; |
|
|
4763 | |
|
|
4764 | ev_loop_fork (EV_A); |
|
|
4765 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4766 | } |
|
|
4767 | |
|
|
4768 | ev_embed_start (EV_A_ w); |
|
|
4769 | } |
|
|
4770 | |
|
|
4771 | #if 0 |
|
|
4772 | static void |
|
|
4773 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
4774 | { |
|
|
4775 | ev_idle_stop (EV_A_ idle); |
|
|
4776 | } |
|
|
4777 | #endif |
|
|
4778 | |
|
|
4779 | void |
|
|
4780 | ev_embed_start (EV_P_ ev_embed *w) EV_THROW |
|
|
4781 | { |
|
|
4782 | if (expect_false (ev_is_active (w))) |
|
|
4783 | return; |
|
|
4784 | |
|
|
4785 | { |
|
|
4786 | EV_P = w->other; |
|
|
4787 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
4788 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
4789 | } |
|
|
4790 | |
|
|
4791 | EV_FREQUENT_CHECK; |
|
|
4792 | |
|
|
4793 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
4794 | ev_io_start (EV_A_ &w->io); |
|
|
4795 | |
|
|
4796 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
4797 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
4798 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
4799 | |
|
|
4800 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
4801 | ev_fork_start (EV_A_ &w->fork); |
|
|
4802 | |
|
|
4803 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
4804 | |
|
|
4805 | ev_start (EV_A_ (W)w, 1); |
|
|
4806 | |
|
|
4807 | EV_FREQUENT_CHECK; |
|
|
4808 | } |
|
|
4809 | |
|
|
4810 | void |
|
|
4811 | ev_embed_stop (EV_P_ ev_embed *w) EV_THROW |
|
|
4812 | { |
|
|
4813 | clear_pending (EV_A_ (W)w); |
|
|
4814 | if (expect_false (!ev_is_active (w))) |
|
|
4815 | return; |
|
|
4816 | |
|
|
4817 | EV_FREQUENT_CHECK; |
|
|
4818 | |
|
|
4819 | ev_io_stop (EV_A_ &w->io); |
|
|
4820 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
4821 | ev_fork_stop (EV_A_ &w->fork); |
|
|
4822 | |
|
|
4823 | ev_stop (EV_A_ (W)w); |
|
|
4824 | |
|
|
4825 | EV_FREQUENT_CHECK; |
|
|
4826 | } |
|
|
4827 | #endif |
|
|
4828 | |
|
|
4829 | #if EV_FORK_ENABLE |
|
|
4830 | void |
|
|
4831 | ev_fork_start (EV_P_ ev_fork *w) EV_THROW |
|
|
4832 | { |
|
|
4833 | if (expect_false (ev_is_active (w))) |
|
|
4834 | return; |
|
|
4835 | |
|
|
4836 | EV_FREQUENT_CHECK; |
|
|
4837 | |
|
|
4838 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
4839 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
4840 | forks [forkcnt - 1] = w; |
|
|
4841 | |
|
|
4842 | EV_FREQUENT_CHECK; |
|
|
4843 | } |
|
|
4844 | |
|
|
4845 | void |
|
|
4846 | ev_fork_stop (EV_P_ ev_fork *w) EV_THROW |
|
|
4847 | { |
|
|
4848 | clear_pending (EV_A_ (W)w); |
|
|
4849 | if (expect_false (!ev_is_active (w))) |
|
|
4850 | return; |
|
|
4851 | |
|
|
4852 | EV_FREQUENT_CHECK; |
|
|
4853 | |
|
|
4854 | { |
|
|
4855 | int active = ev_active (w); |
|
|
4856 | |
|
|
4857 | forks [active - 1] = forks [--forkcnt]; |
|
|
4858 | ev_active (forks [active - 1]) = active; |
|
|
4859 | } |
|
|
4860 | |
|
|
4861 | ev_stop (EV_A_ (W)w); |
|
|
4862 | |
|
|
4863 | EV_FREQUENT_CHECK; |
|
|
4864 | } |
|
|
4865 | #endif |
|
|
4866 | |
|
|
4867 | #if EV_CLEANUP_ENABLE |
|
|
4868 | void |
|
|
4869 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4870 | { |
|
|
4871 | if (expect_false (ev_is_active (w))) |
|
|
4872 | return; |
|
|
4873 | |
|
|
4874 | EV_FREQUENT_CHECK; |
|
|
4875 | |
|
|
4876 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
4877 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
4878 | cleanups [cleanupcnt - 1] = w; |
|
|
4879 | |
|
|
4880 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4881 | ev_unref (EV_A); |
|
|
4882 | EV_FREQUENT_CHECK; |
|
|
4883 | } |
|
|
4884 | |
|
|
4885 | void |
|
|
4886 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4887 | { |
|
|
4888 | clear_pending (EV_A_ (W)w); |
|
|
4889 | if (expect_false (!ev_is_active (w))) |
|
|
4890 | return; |
|
|
4891 | |
|
|
4892 | EV_FREQUENT_CHECK; |
|
|
4893 | ev_ref (EV_A); |
|
|
4894 | |
|
|
4895 | { |
|
|
4896 | int active = ev_active (w); |
|
|
4897 | |
|
|
4898 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4899 | ev_active (cleanups [active - 1]) = active; |
|
|
4900 | } |
|
|
4901 | |
|
|
4902 | ev_stop (EV_A_ (W)w); |
|
|
4903 | |
|
|
4904 | EV_FREQUENT_CHECK; |
|
|
4905 | } |
|
|
4906 | #endif |
|
|
4907 | |
|
|
4908 | #if EV_ASYNC_ENABLE |
|
|
4909 | void |
|
|
4910 | ev_async_start (EV_P_ ev_async *w) EV_THROW |
|
|
4911 | { |
|
|
4912 | if (expect_false (ev_is_active (w))) |
|
|
4913 | return; |
|
|
4914 | |
|
|
4915 | w->sent = 0; |
|
|
4916 | |
|
|
4917 | evpipe_init (EV_A); |
|
|
4918 | |
|
|
4919 | EV_FREQUENT_CHECK; |
|
|
4920 | |
|
|
4921 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4922 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
4923 | asyncs [asynccnt - 1] = w; |
|
|
4924 | |
|
|
4925 | EV_FREQUENT_CHECK; |
|
|
4926 | } |
|
|
4927 | |
|
|
4928 | void |
|
|
4929 | ev_async_stop (EV_P_ ev_async *w) EV_THROW |
|
|
4930 | { |
|
|
4931 | clear_pending (EV_A_ (W)w); |
|
|
4932 | if (expect_false (!ev_is_active (w))) |
|
|
4933 | return; |
|
|
4934 | |
|
|
4935 | EV_FREQUENT_CHECK; |
|
|
4936 | |
|
|
4937 | { |
|
|
4938 | int active = ev_active (w); |
|
|
4939 | |
|
|
4940 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
4941 | ev_active (asyncs [active - 1]) = active; |
|
|
4942 | } |
|
|
4943 | |
|
|
4944 | ev_stop (EV_A_ (W)w); |
|
|
4945 | |
|
|
4946 | EV_FREQUENT_CHECK; |
|
|
4947 | } |
|
|
4948 | |
|
|
4949 | void |
|
|
4950 | ev_async_send (EV_P_ ev_async *w) EV_THROW |
|
|
4951 | { |
|
|
4952 | w->sent = 1; |
|
|
4953 | evpipe_write (EV_A_ &async_pending); |
|
|
4954 | } |
|
|
4955 | #endif |
|
|
4956 | |
|
|
4957 | /*****************************************************************************/ |
|
|
4958 | |
|
|
4959 | struct ev_once |
|
|
4960 | { |
|
|
4961 | ev_io io; |
|
|
4962 | ev_timer to; |
|
|
4963 | void (*cb)(int revents, void *arg); |
|
|
4964 | void *arg; |
|
|
4965 | }; |
|
|
4966 | |
|
|
4967 | static void |
|
|
4968 | once_cb (EV_P_ struct ev_once *once, int revents) |
|
|
4969 | { |
|
|
4970 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
4971 | void *arg = once->arg; |
|
|
4972 | |
|
|
4973 | ev_io_stop (EV_A_ &once->io); |
|
|
4974 | ev_timer_stop (EV_A_ &once->to); |
|
|
4975 | ev_free (once); |
|
|
4976 | |
|
|
4977 | cb (revents, arg); |
|
|
4978 | } |
|
|
4979 | |
|
|
4980 | static void |
|
|
4981 | once_cb_io (EV_P_ ev_io *w, int revents) |
|
|
4982 | { |
|
|
4983 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
4984 | |
|
|
4985 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
|
|
4986 | } |
|
|
4987 | |
|
|
4988 | static void |
|
|
4989 | once_cb_to (EV_P_ ev_timer *w, int revents) |
|
|
4990 | { |
|
|
4991 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
4992 | |
|
|
4993 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
4994 | } |
|
|
4995 | |
|
|
4996 | void |
|
|
4997 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW |
|
|
4998 | { |
|
|
4999 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
|
|
5000 | |
|
|
5001 | if (expect_false (!once)) |
|
|
5002 | { |
|
|
5003 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
|
|
5004 | return; |
|
|
5005 | } |
|
|
5006 | |
|
|
5007 | once->cb = cb; |
|
|
5008 | once->arg = arg; |
|
|
5009 | |
|
|
5010 | ev_init (&once->io, once_cb_io); |
|
|
5011 | if (fd >= 0) |
|
|
5012 | { |
|
|
5013 | ev_io_set (&once->io, fd, events); |
|
|
5014 | ev_io_start (EV_A_ &once->io); |
|
|
5015 | } |
|
|
5016 | |
|
|
5017 | ev_init (&once->to, once_cb_to); |
|
|
5018 | if (timeout >= 0.) |
|
|
5019 | { |
|
|
5020 | ev_timer_set (&once->to, timeout, 0.); |
|
|
5021 | ev_timer_start (EV_A_ &once->to); |
|
|
5022 | } |
|
|
5023 | } |
|
|
5024 | |
|
|
5025 | /*****************************************************************************/ |
|
|
5026 | |
|
|
5027 | #if EV_WALK_ENABLE |
|
|
5028 | ecb_cold |
|
|
5029 | void |
|
|
5030 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW |
|
|
5031 | { |
|
|
5032 | int i, j; |
|
|
5033 | ev_watcher_list *wl, *wn; |
|
|
5034 | |
|
|
5035 | if (types & (EV_IO | EV_EMBED)) |
|
|
5036 | for (i = 0; i < anfdmax; ++i) |
|
|
5037 | for (wl = anfds [i].head; wl; ) |
|
|
5038 | { |
|
|
5039 | wn = wl->next; |
|
|
5040 | |
|
|
5041 | #if EV_EMBED_ENABLE |
|
|
5042 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
5043 | { |
|
|
5044 | if (types & EV_EMBED) |
|
|
5045 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
5046 | } |
|
|
5047 | else |
|
|
5048 | #endif |
|
|
5049 | #if EV_USE_INOTIFY |
|
|
5050 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
5051 | ; |
|
|
5052 | else |
|
|
5053 | #endif |
|
|
5054 | if ((ev_io *)wl != &pipe_w) |
|
|
5055 | if (types & EV_IO) |
|
|
5056 | cb (EV_A_ EV_IO, wl); |
|
|
5057 | |
|
|
5058 | wl = wn; |
|
|
5059 | } |
|
|
5060 | |
|
|
5061 | if (types & (EV_TIMER | EV_STAT)) |
|
|
5062 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
5063 | #if EV_STAT_ENABLE |
|
|
5064 | /*TODO: timer is not always active*/ |
|
|
5065 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
|
|
5066 | { |
|
|
5067 | if (types & EV_STAT) |
|
|
5068 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
|
|
5069 | } |
373 | else |
5070 | else |
|
|
5071 | #endif |
|
|
5072 | if (types & EV_TIMER) |
|
|
5073 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
|
|
5074 | |
|
|
5075 | #if EV_PERIODIC_ENABLE |
|
|
5076 | if (types & EV_PERIODIC) |
|
|
5077 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
5078 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
5079 | #endif |
|
|
5080 | |
|
|
5081 | #if EV_IDLE_ENABLE |
|
|
5082 | if (types & EV_IDLE) |
|
|
5083 | for (j = NUMPRI; j--; ) |
|
|
5084 | for (i = idlecnt [j]; i--; ) |
|
|
5085 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
5086 | #endif |
|
|
5087 | |
|
|
5088 | #if EV_FORK_ENABLE |
|
|
5089 | if (types & EV_FORK) |
|
|
5090 | for (i = forkcnt; i--; ) |
|
|
5091 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
5092 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
5093 | #endif |
|
|
5094 | |
|
|
5095 | #if EV_ASYNC_ENABLE |
|
|
5096 | if (types & EV_ASYNC) |
|
|
5097 | for (i = asynccnt; i--; ) |
|
|
5098 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
5099 | #endif |
|
|
5100 | |
|
|
5101 | #if EV_PREPARE_ENABLE |
|
|
5102 | if (types & EV_PREPARE) |
|
|
5103 | for (i = preparecnt; i--; ) |
|
|
5104 | # if EV_EMBED_ENABLE |
|
|
5105 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
5106 | # endif |
|
|
5107 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
5108 | #endif |
|
|
5109 | |
|
|
5110 | #if EV_CHECK_ENABLE |
|
|
5111 | if (types & EV_CHECK) |
|
|
5112 | for (i = checkcnt; i--; ) |
|
|
5113 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
5114 | #endif |
|
|
5115 | |
|
|
5116 | #if EV_SIGNAL_ENABLE |
|
|
5117 | if (types & EV_SIGNAL) |
|
|
5118 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
5119 | for (wl = signals [i].head; wl; ) |
374 | { |
5120 | { |
375 | block = MAX_BLOCKTIME; |
5121 | wn = wl->next; |
376 | |
5122 | cb (EV_A_ EV_SIGNAL, wl); |
377 | if (rtimercnt) |
5123 | wl = wn; |
378 | { |
|
|
379 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
|
|
380 | if (block > to) block = to; |
|
|
381 | } |
|
|
382 | |
|
|
383 | if (atimercnt) |
|
|
384 | { |
|
|
385 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
|
|
386 | if (block > to) block = to; |
|
|
387 | } |
|
|
388 | |
|
|
389 | if (block < 0.) block = 0.; |
|
|
390 | } |
5124 | } |
|
|
5125 | #endif |
391 | |
5126 | |
392 | method_poll (block); |
5127 | #if EV_CHILD_ENABLE |
393 | |
5128 | if (types & EV_CHILD) |
394 | /* update ev_now, do magic */ |
5129 | for (i = (EV_PID_HASHSIZE); i--; ) |
395 | time_update (); |
5130 | for (wl = childs [i]; wl; ) |
396 | |
|
|
397 | /* put pending timers into pendign queue and reschedule them */ |
|
|
398 | /* absolute timers first */ |
|
|
399 | timers_reify (atimers, atimercnt, ev_now); |
|
|
400 | /* relative timers second */ |
|
|
401 | timers_reify (rtimers, rtimercnt, now); |
|
|
402 | |
|
|
403 | call_pending (); |
|
|
404 | } |
|
|
405 | while (!ev_loop_done); |
|
|
406 | } |
|
|
407 | |
|
|
408 | static void |
|
|
409 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
|
|
410 | { |
|
|
411 | elem->next = *head; |
|
|
412 | *head = elem; |
|
|
413 | } |
|
|
414 | |
|
|
415 | static void |
|
|
416 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
|
|
417 | { |
|
|
418 | while (*head) |
|
|
419 | { |
|
|
420 | if (*head == elem) |
|
|
421 | { |
5131 | { |
422 | *head = elem->next; |
5132 | wn = wl->next; |
423 | return; |
5133 | cb (EV_A_ EV_CHILD, wl); |
|
|
5134 | wl = wn; |
424 | } |
5135 | } |
425 | |
|
|
426 | head = &(*head)->next; |
|
|
427 | } |
|
|
428 | } |
|
|
429 | |
|
|
430 | static void |
|
|
431 | ev_start (struct ev_watcher *w, int active) |
|
|
432 | { |
|
|
433 | w->pending = 0; |
|
|
434 | w->active = active; |
|
|
435 | } |
|
|
436 | |
|
|
437 | static void |
|
|
438 | ev_stop (struct ev_watcher *w) |
|
|
439 | { |
|
|
440 | if (w->pending) |
|
|
441 | pendings [w->pending - 1].w = 0; |
|
|
442 | |
|
|
443 | w->active = 0; |
|
|
444 | /* nop */ |
|
|
445 | } |
|
|
446 | |
|
|
447 | void |
|
|
448 | evio_start (struct ev_io *w) |
|
|
449 | { |
|
|
450 | if (ev_is_active (w)) |
|
|
451 | return; |
|
|
452 | |
|
|
453 | int fd = w->fd; |
|
|
454 | |
|
|
455 | ev_start ((struct ev_watcher *)w, 1); |
|
|
456 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
457 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
|
|
458 | |
|
|
459 | ++fdchangecnt; |
|
|
460 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
461 | fdchanges [fdchangecnt - 1] = fd; |
|
|
462 | } |
|
|
463 | |
|
|
464 | void |
|
|
465 | evio_stop (struct ev_io *w) |
|
|
466 | { |
|
|
467 | if (!ev_is_active (w)) |
|
|
468 | return; |
|
|
469 | |
|
|
470 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
|
|
471 | ev_stop ((struct ev_watcher *)w); |
|
|
472 | |
|
|
473 | ++fdchangecnt; |
|
|
474 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
475 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
476 | } |
|
|
477 | |
|
|
478 | void |
|
|
479 | evtimer_start (struct ev_timer *w) |
|
|
480 | { |
|
|
481 | if (ev_is_active (w)) |
|
|
482 | return; |
|
|
483 | |
|
|
484 | if (w->is_abs) |
|
|
485 | { |
|
|
486 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
|
|
487 | if (w->repeat) |
|
|
488 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
|
|
489 | |
|
|
490 | ev_start ((struct ev_watcher *)w, ++atimercnt); |
|
|
491 | array_needsize (atimers, atimermax, atimercnt, ); |
|
|
492 | atimers [atimercnt - 1] = w; |
|
|
493 | upheap (atimers, atimercnt - 1); |
|
|
494 | } |
|
|
495 | else |
|
|
496 | { |
|
|
497 | w->at += now; |
|
|
498 | |
|
|
499 | ev_start ((struct ev_watcher *)w, ++rtimercnt); |
|
|
500 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
501 | rtimers [rtimercnt - 1] = w; |
|
|
502 | upheap (rtimers, rtimercnt - 1); |
|
|
503 | } |
|
|
504 | |
|
|
505 | } |
|
|
506 | |
|
|
507 | void |
|
|
508 | evtimer_stop (struct ev_timer *w) |
|
|
509 | { |
|
|
510 | if (!ev_is_active (w)) |
|
|
511 | return; |
|
|
512 | |
|
|
513 | if (w->is_abs) |
|
|
514 | { |
|
|
515 | if (w->active < atimercnt--) |
|
|
516 | { |
|
|
517 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
518 | downheap (atimers, atimercnt, w->active - 1); |
|
|
519 | } |
|
|
520 | } |
|
|
521 | else |
|
|
522 | { |
|
|
523 | if (w->active < rtimercnt--) |
|
|
524 | { |
|
|
525 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
526 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
527 | } |
|
|
528 | } |
|
|
529 | |
|
|
530 | ev_stop ((struct ev_watcher *)w); |
|
|
531 | } |
|
|
532 | |
|
|
533 | void |
|
|
534 | evsignal_start (struct ev_signal *w) |
|
|
535 | { |
|
|
536 | if (ev_is_active (w)) |
|
|
537 | return; |
|
|
538 | |
|
|
539 | ev_start ((struct ev_watcher *)w, 1); |
|
|
540 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
541 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
|
|
542 | } |
|
|
543 | |
|
|
544 | void |
|
|
545 | evsignal_stop (struct ev_signal *w) |
|
|
546 | { |
|
|
547 | if (!ev_is_active (w)) |
|
|
548 | return; |
|
|
549 | |
|
|
550 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
|
|
551 | ev_stop ((struct ev_watcher *)w); |
|
|
552 | } |
|
|
553 | |
|
|
554 | /*****************************************************************************/ |
|
|
555 | #if 1 |
|
|
556 | |
|
|
557 | static void |
|
|
558 | sin_cb (struct ev_io *w, int revents) |
|
|
559 | { |
|
|
560 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
561 | } |
|
|
562 | |
|
|
563 | static void |
|
|
564 | ocb (struct ev_timer *w, int revents) |
|
|
565 | { |
|
|
566 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
567 | evtimer_stop (w); |
|
|
568 | evtimer_start (w); |
|
|
569 | } |
|
|
570 | |
|
|
571 | int main (void) |
|
|
572 | { |
|
|
573 | struct ev_io sin; |
|
|
574 | |
|
|
575 | ev_init (0); |
|
|
576 | |
|
|
577 | evw_init (&sin, sin_cb, 55); |
|
|
578 | evio_set (&sin, 0, EV_READ); |
|
|
579 | evio_start (&sin); |
|
|
580 | |
|
|
581 | struct ev_timer t[10000]; |
|
|
582 | |
|
|
583 | #if 1 |
|
|
584 | int i; |
|
|
585 | for (i = 0; i < 10000; ++i) |
|
|
586 | { |
|
|
587 | struct ev_timer *w = t + i; |
|
|
588 | evw_init (w, ocb, i); |
|
|
589 | evtimer_set_abs (w, drand48 (), 0.99775533); |
|
|
590 | evtimer_start (w); |
|
|
591 | if (drand48 () < 0.5) |
|
|
592 | evtimer_stop (w); |
|
|
593 | } |
|
|
594 | #endif |
5136 | #endif |
595 | |
5137 | /* EV_STAT 0x00001000 /* stat data changed */ |
596 | struct ev_timer t1; |
5138 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
597 | evw_init (&t1, ocb, 0); |
|
|
598 | evtimer_set_abs (&t1, 5, 10); |
|
|
599 | evtimer_start (&t1); |
|
|
600 | |
|
|
601 | ev_loop (0); |
|
|
602 | |
|
|
603 | return 0; |
|
|
604 | } |
5139 | } |
605 | |
|
|
606 | #endif |
5140 | #endif |
607 | |
5141 | |
|
|
5142 | #if EV_MULTIPLICITY |
|
|
5143 | #include "ev_wrap.h" |
|
|
5144 | #endif |
608 | |
5145 | |
609 | |
|
|
610 | |
|
|