1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | #ifdef __cplusplus |
33 | extern "C" { |
41 | extern "C" { |
34 | #endif |
42 | #endif |
35 | |
43 | |
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44 | /* this big block deduces configuration from config.h */ |
36 | #ifndef EV_STANDALONE |
45 | #ifndef EV_STANDALONE |
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46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
37 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_SYSCALL |
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53 | # ifndef EV_USE_CLOCK_SYSCALL |
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54 | # define EV_USE_CLOCK_SYSCALL 1 |
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55 | # ifndef EV_USE_REALTIME |
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56 | # define EV_USE_REALTIME 0 |
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57 | # endif |
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58 | # ifndef EV_USE_MONOTONIC |
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59 | # define EV_USE_MONOTONIC 1 |
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60 | # endif |
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61 | # endif |
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62 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
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63 | # define EV_USE_CLOCK_SYSCALL 0 |
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64 | # endif |
38 | |
65 | |
39 | # if HAVE_CLOCK_GETTIME |
66 | # if HAVE_CLOCK_GETTIME |
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67 | # ifndef EV_USE_MONOTONIC |
40 | # define EV_USE_MONOTONIC 1 |
68 | # define EV_USE_MONOTONIC 1 |
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69 | # endif |
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70 | # ifndef EV_USE_REALTIME |
41 | # define EV_USE_REALTIME 1 |
71 | # define EV_USE_REALTIME 0 |
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72 | # endif |
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73 | # else |
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74 | # ifndef EV_USE_MONOTONIC |
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75 | # define EV_USE_MONOTONIC 0 |
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76 | # endif |
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77 | # ifndef EV_USE_REALTIME |
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78 | # define EV_USE_REALTIME 0 |
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79 | # endif |
42 | # endif |
80 | # endif |
43 | |
81 | |
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82 | # if HAVE_NANOSLEEP |
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83 | # ifndef EV_USE_NANOSLEEP |
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84 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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85 | # endif |
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86 | # else |
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87 | # undef EV_USE_NANOSLEEP |
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88 | # define EV_USE_NANOSLEEP 0 |
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89 | # endif |
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90 | |
44 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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92 | # ifndef EV_USE_SELECT |
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93 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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94 | # endif |
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95 | # else |
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96 | # undef EV_USE_SELECT |
45 | # define EV_USE_SELECT 1 |
97 | # define EV_USE_SELECT 0 |
46 | # endif |
98 | # endif |
47 | |
99 | |
48 | # if HAVE_POLL && HAVE_POLL_H |
100 | # if HAVE_POLL && HAVE_POLL_H |
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101 | # ifndef EV_USE_POLL |
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102 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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103 | # endif |
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104 | # else |
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105 | # undef EV_USE_POLL |
49 | # define EV_USE_POLL 1 |
106 | # define EV_USE_POLL 0 |
50 | # endif |
107 | # endif |
51 | |
108 | |
52 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
109 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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110 | # ifndef EV_USE_EPOLL |
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111 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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112 | # endif |
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113 | # else |
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114 | # undef EV_USE_EPOLL |
53 | # define EV_USE_EPOLL 1 |
115 | # define EV_USE_EPOLL 0 |
54 | # endif |
116 | # endif |
55 | |
117 | |
56 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
118 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
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119 | # ifndef EV_USE_KQUEUE |
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120 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
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121 | # endif |
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122 | # else |
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123 | # undef EV_USE_KQUEUE |
57 | # define EV_USE_KQUEUE 1 |
124 | # define EV_USE_KQUEUE 0 |
58 | # endif |
125 | # endif |
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126 | |
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127 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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128 | # ifndef EV_USE_PORT |
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129 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
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130 | # endif |
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131 | # else |
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132 | # undef EV_USE_PORT |
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133 | # define EV_USE_PORT 0 |
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134 | # endif |
59 | |
135 | |
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136 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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137 | # ifndef EV_USE_INOTIFY |
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138 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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139 | # endif |
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140 | # else |
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141 | # undef EV_USE_INOTIFY |
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142 | # define EV_USE_INOTIFY 0 |
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143 | # endif |
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144 | |
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145 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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146 | # ifndef EV_USE_SIGNALFD |
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147 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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148 | # endif |
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149 | # else |
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150 | # undef EV_USE_SIGNALFD |
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151 | # define EV_USE_SIGNALFD 0 |
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152 | # endif |
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153 | |
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154 | # if HAVE_EVENTFD |
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155 | # ifndef EV_USE_EVENTFD |
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156 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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157 | # endif |
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158 | # else |
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159 | # undef EV_USE_EVENTFD |
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160 | # define EV_USE_EVENTFD 0 |
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161 | # endif |
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162 | |
60 | #endif |
163 | #endif |
61 | |
164 | |
62 | #include <math.h> |
165 | #include <math.h> |
63 | #include <stdlib.h> |
166 | #include <stdlib.h> |
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167 | #include <string.h> |
64 | #include <fcntl.h> |
168 | #include <fcntl.h> |
65 | #include <stddef.h> |
169 | #include <stddef.h> |
66 | |
170 | |
67 | #include <stdio.h> |
171 | #include <stdio.h> |
68 | |
172 | |
69 | #include <assert.h> |
173 | #include <assert.h> |
70 | #include <errno.h> |
174 | #include <errno.h> |
71 | #include <sys/types.h> |
175 | #include <sys/types.h> |
72 | #include <time.h> |
176 | #include <time.h> |
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177 | #include <limits.h> |
73 | |
178 | |
74 | #include <signal.h> |
179 | #include <signal.h> |
75 | |
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76 | #ifndef WIN32 |
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77 | # include <unistd.h> |
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78 | # include <sys/time.h> |
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79 | # include <sys/wait.h> |
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80 | #endif |
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81 | /**/ |
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82 | |
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83 | #ifndef EV_USE_MONOTONIC |
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84 | # define EV_USE_MONOTONIC 1 |
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85 | #endif |
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86 | |
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87 | #ifndef EV_USE_SELECT |
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88 | # define EV_USE_SELECT 1 |
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89 | #endif |
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90 | |
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91 | #ifndef EV_USE_POLL |
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92 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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93 | #endif |
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94 | |
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95 | #ifndef EV_USE_EPOLL |
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96 | # define EV_USE_EPOLL 0 |
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97 | #endif |
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98 | |
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99 | #ifndef EV_USE_KQUEUE |
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100 | # define EV_USE_KQUEUE 0 |
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101 | #endif |
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102 | |
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103 | #ifndef EV_USE_WIN32 |
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104 | # ifdef WIN32 |
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105 | # define EV_USE_WIN32 0 /* it does not exist, use select */ |
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106 | # undef EV_USE_SELECT |
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107 | # define EV_USE_SELECT 1 |
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108 | # else |
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109 | # define EV_USE_WIN32 0 |
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110 | # endif |
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111 | #endif |
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112 | |
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113 | #ifndef EV_USE_REALTIME |
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114 | # define EV_USE_REALTIME 1 |
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115 | #endif |
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116 | |
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117 | /**/ |
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118 | |
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119 | #ifndef CLOCK_MONOTONIC |
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120 | # undef EV_USE_MONOTONIC |
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121 | # define EV_USE_MONOTONIC 0 |
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122 | #endif |
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123 | |
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124 | #ifndef CLOCK_REALTIME |
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125 | # undef EV_USE_REALTIME |
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126 | # define EV_USE_REALTIME 0 |
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127 | #endif |
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128 | |
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129 | /**/ |
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130 | |
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131 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
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132 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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133 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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134 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
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135 | |
180 | |
136 | #ifdef EV_H |
181 | #ifdef EV_H |
137 | # include EV_H |
182 | # include EV_H |
138 | #else |
183 | #else |
139 | # include "ev.h" |
184 | # include "ev.h" |
140 | #endif |
185 | #endif |
141 | |
186 | |
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187 | #ifndef _WIN32 |
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188 | # include <sys/time.h> |
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189 | # include <sys/wait.h> |
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190 | # include <unistd.h> |
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191 | #else |
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192 | # include <io.h> |
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193 | # define WIN32_LEAN_AND_MEAN |
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194 | # include <windows.h> |
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195 | # ifndef EV_SELECT_IS_WINSOCKET |
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196 | # define EV_SELECT_IS_WINSOCKET 1 |
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197 | # endif |
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198 | # undef EV_AVOID_STDIO |
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199 | #endif |
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200 | |
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201 | /* OS X, in its infinite idiocy, actually HARDCODES |
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202 | * a limit of 1024 into their select. Where people have brains, |
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203 | * OS X engineers apparently have a vacuum. Or maybe they were |
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204 | * ordered to have a vacuum, or they do anything for money. |
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205 | * This might help. Or not. |
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206 | */ |
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207 | #define _DARWIN_UNLIMITED_SELECT 1 |
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208 | |
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209 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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210 | |
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211 | /* try to deduce the maximum number of signals on this platform */ |
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212 | #if defined (EV_NSIG) |
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213 | /* use what's provided */ |
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214 | #elif defined (NSIG) |
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215 | # define EV_NSIG (NSIG) |
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216 | #elif defined(_NSIG) |
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217 | # define EV_NSIG (_NSIG) |
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218 | #elif defined (SIGMAX) |
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219 | # define EV_NSIG (SIGMAX+1) |
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220 | #elif defined (SIG_MAX) |
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221 | # define EV_NSIG (SIG_MAX+1) |
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222 | #elif defined (_SIG_MAX) |
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223 | # define EV_NSIG (_SIG_MAX+1) |
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224 | #elif defined (MAXSIG) |
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225 | # define EV_NSIG (MAXSIG+1) |
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226 | #elif defined (MAX_SIG) |
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227 | # define EV_NSIG (MAX_SIG+1) |
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228 | #elif defined (SIGARRAYSIZE) |
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229 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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230 | #elif defined (_sys_nsig) |
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231 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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232 | #else |
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233 | # error "unable to find value for NSIG, please report" |
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234 | /* to make it compile regardless, just remove the above line, */ |
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235 | /* but consider reporting it, too! :) */ |
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236 | # define EV_NSIG 65 |
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237 | #endif |
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238 | |
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239 | #ifndef EV_USE_CLOCK_SYSCALL |
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240 | # if __linux && __GLIBC__ >= 2 |
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241 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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242 | # else |
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243 | # define EV_USE_CLOCK_SYSCALL 0 |
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244 | # endif |
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245 | #endif |
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246 | |
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247 | #ifndef EV_USE_MONOTONIC |
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248 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
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249 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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250 | # else |
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251 | # define EV_USE_MONOTONIC 0 |
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252 | # endif |
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253 | #endif |
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254 | |
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255 | #ifndef EV_USE_REALTIME |
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256 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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257 | #endif |
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258 | |
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259 | #ifndef EV_USE_NANOSLEEP |
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260 | # if _POSIX_C_SOURCE >= 199309L |
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261 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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262 | # else |
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263 | # define EV_USE_NANOSLEEP 0 |
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264 | # endif |
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265 | #endif |
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266 | |
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267 | #ifndef EV_USE_SELECT |
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268 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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269 | #endif |
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270 | |
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271 | #ifndef EV_USE_POLL |
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272 | # ifdef _WIN32 |
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273 | # define EV_USE_POLL 0 |
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274 | # else |
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275 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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276 | # endif |
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277 | #endif |
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278 | |
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279 | #ifndef EV_USE_EPOLL |
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280 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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281 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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282 | # else |
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283 | # define EV_USE_EPOLL 0 |
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284 | # endif |
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285 | #endif |
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286 | |
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287 | #ifndef EV_USE_KQUEUE |
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288 | # define EV_USE_KQUEUE 0 |
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289 | #endif |
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290 | |
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291 | #ifndef EV_USE_PORT |
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292 | # define EV_USE_PORT 0 |
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293 | #endif |
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294 | |
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295 | #ifndef EV_USE_INOTIFY |
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296 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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297 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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298 | # else |
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299 | # define EV_USE_INOTIFY 0 |
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300 | # endif |
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301 | #endif |
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302 | |
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303 | #ifndef EV_PID_HASHSIZE |
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304 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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305 | #endif |
|
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306 | |
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307 | #ifndef EV_INOTIFY_HASHSIZE |
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308 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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309 | #endif |
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310 | |
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311 | #ifndef EV_USE_EVENTFD |
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312 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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313 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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314 | # else |
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315 | # define EV_USE_EVENTFD 0 |
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316 | # endif |
|
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317 | #endif |
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318 | |
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319 | #ifndef EV_USE_SIGNALFD |
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320 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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321 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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322 | # else |
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323 | # define EV_USE_SIGNALFD 0 |
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324 | # endif |
|
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325 | #endif |
|
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326 | |
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327 | #if 0 /* debugging */ |
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328 | # define EV_VERIFY 3 |
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329 | # define EV_USE_4HEAP 1 |
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330 | # define EV_HEAP_CACHE_AT 1 |
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331 | #endif |
|
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332 | |
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333 | #ifndef EV_VERIFY |
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334 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
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335 | #endif |
|
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336 | |
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337 | #ifndef EV_USE_4HEAP |
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338 | # define EV_USE_4HEAP EV_FEATURE_DATA |
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339 | #endif |
|
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340 | |
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341 | #ifndef EV_HEAP_CACHE_AT |
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342 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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343 | #endif |
|
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344 | |
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345 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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346 | /* which makes programs even slower. might work on other unices, too. */ |
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347 | #if EV_USE_CLOCK_SYSCALL |
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348 | # include <syscall.h> |
|
|
349 | # ifdef SYS_clock_gettime |
|
|
350 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
351 | # undef EV_USE_MONOTONIC |
|
|
352 | # define EV_USE_MONOTONIC 1 |
|
|
353 | # else |
|
|
354 | # undef EV_USE_CLOCK_SYSCALL |
|
|
355 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
356 | # endif |
|
|
357 | #endif |
|
|
358 | |
|
|
359 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
|
|
360 | |
|
|
361 | #ifdef _AIX |
|
|
362 | /* AIX has a completely broken poll.h header */ |
|
|
363 | # undef EV_USE_POLL |
|
|
364 | # define EV_USE_POLL 0 |
|
|
365 | #endif |
|
|
366 | |
|
|
367 | #ifndef CLOCK_MONOTONIC |
|
|
368 | # undef EV_USE_MONOTONIC |
|
|
369 | # define EV_USE_MONOTONIC 0 |
|
|
370 | #endif |
|
|
371 | |
|
|
372 | #ifndef CLOCK_REALTIME |
|
|
373 | # undef EV_USE_REALTIME |
|
|
374 | # define EV_USE_REALTIME 0 |
|
|
375 | #endif |
|
|
376 | |
|
|
377 | #if !EV_STAT_ENABLE |
|
|
378 | # undef EV_USE_INOTIFY |
|
|
379 | # define EV_USE_INOTIFY 0 |
|
|
380 | #endif |
|
|
381 | |
|
|
382 | #if !EV_USE_NANOSLEEP |
|
|
383 | # ifndef _WIN32 |
|
|
384 | # include <sys/select.h> |
|
|
385 | # endif |
|
|
386 | #endif |
|
|
387 | |
|
|
388 | #if EV_USE_INOTIFY |
|
|
389 | # include <sys/utsname.h> |
|
|
390 | # include <sys/statfs.h> |
|
|
391 | # include <sys/inotify.h> |
|
|
392 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
393 | # ifndef IN_DONT_FOLLOW |
|
|
394 | # undef EV_USE_INOTIFY |
|
|
395 | # define EV_USE_INOTIFY 0 |
|
|
396 | # endif |
|
|
397 | #endif |
|
|
398 | |
|
|
399 | #if EV_SELECT_IS_WINSOCKET |
|
|
400 | # include <winsock.h> |
|
|
401 | #endif |
|
|
402 | |
|
|
403 | #if EV_USE_EVENTFD |
|
|
404 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
405 | # include <stdint.h> |
|
|
406 | # ifndef EFD_NONBLOCK |
|
|
407 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
408 | # endif |
|
|
409 | # ifndef EFD_CLOEXEC |
|
|
410 | # ifdef O_CLOEXEC |
|
|
411 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
412 | # else |
|
|
413 | # define EFD_CLOEXEC 02000000 |
|
|
414 | # endif |
|
|
415 | # endif |
|
|
416 | # ifdef __cplusplus |
|
|
417 | extern "C" { |
|
|
418 | # endif |
|
|
419 | int (eventfd) (unsigned int initval, int flags); |
|
|
420 | # ifdef __cplusplus |
|
|
421 | } |
|
|
422 | # endif |
|
|
423 | #endif |
|
|
424 | |
|
|
425 | #if EV_USE_SIGNALFD |
|
|
426 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
427 | # include <stdint.h> |
|
|
428 | # ifndef SFD_NONBLOCK |
|
|
429 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
430 | # endif |
|
|
431 | # ifndef SFD_CLOEXEC |
|
|
432 | # ifdef O_CLOEXEC |
|
|
433 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
434 | # else |
|
|
435 | # define SFD_CLOEXEC 02000000 |
|
|
436 | # endif |
|
|
437 | # endif |
|
|
438 | # ifdef __cplusplus |
|
|
439 | extern "C" { |
|
|
440 | # endif |
|
|
441 | int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
442 | |
|
|
443 | struct signalfd_siginfo |
|
|
444 | { |
|
|
445 | uint32_t ssi_signo; |
|
|
446 | char pad[128 - sizeof (uint32_t)]; |
|
|
447 | }; |
|
|
448 | # ifdef __cplusplus |
|
|
449 | } |
|
|
450 | # endif |
|
|
451 | #endif |
|
|
452 | |
|
|
453 | |
|
|
454 | /**/ |
|
|
455 | |
|
|
456 | #if EV_VERIFY >= 3 |
|
|
457 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
458 | #else |
|
|
459 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
460 | #endif |
|
|
461 | |
|
|
462 | /* |
|
|
463 | * This is used to avoid floating point rounding problems. |
|
|
464 | * It is added to ev_rt_now when scheduling periodics |
|
|
465 | * to ensure progress, time-wise, even when rounding |
|
|
466 | * errors are against us. |
|
|
467 | * This value is good at least till the year 4000. |
|
|
468 | * Better solutions welcome. |
|
|
469 | */ |
|
|
470 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
|
|
471 | |
|
|
472 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
|
|
473 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
474 | |
142 | #if __GNUC__ >= 3 |
475 | #if __GNUC__ >= 4 |
143 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
476 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
144 | # define inline inline |
477 | # define noinline __attribute__ ((noinline)) |
145 | #else |
478 | #else |
146 | # define expect(expr,value) (expr) |
479 | # define expect(expr,value) (expr) |
147 | # define inline static |
480 | # define noinline |
|
|
481 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
482 | # define inline |
|
|
483 | # endif |
148 | #endif |
484 | #endif |
149 | |
485 | |
150 | #define expect_false(expr) expect ((expr) != 0, 0) |
486 | #define expect_false(expr) expect ((expr) != 0, 0) |
151 | #define expect_true(expr) expect ((expr) != 0, 1) |
487 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
488 | #define inline_size static inline |
152 | |
489 | |
|
|
490 | #if EV_FEATURE_CODE |
|
|
491 | # define inline_speed static inline |
|
|
492 | #else |
|
|
493 | # define inline_speed static noinline |
|
|
494 | #endif |
|
|
495 | |
153 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
496 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
497 | |
|
|
498 | #if EV_MINPRI == EV_MAXPRI |
|
|
499 | # define ABSPRI(w) (((W)w), 0) |
|
|
500 | #else |
154 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
501 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
502 | #endif |
155 | |
503 | |
|
|
504 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
505 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
506 | |
156 | typedef struct ev_watcher *W; |
507 | typedef ev_watcher *W; |
157 | typedef struct ev_watcher_list *WL; |
508 | typedef ev_watcher_list *WL; |
158 | typedef struct ev_watcher_time *WT; |
509 | typedef ev_watcher_time *WT; |
159 | |
510 | |
|
|
511 | #define ev_active(w) ((W)(w))->active |
|
|
512 | #define ev_at(w) ((WT)(w))->at |
|
|
513 | |
|
|
514 | #if EV_USE_REALTIME |
|
|
515 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
516 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
517 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
518 | #endif |
|
|
519 | |
|
|
520 | #if EV_USE_MONOTONIC |
160 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
521 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
522 | #endif |
161 | |
523 | |
|
|
524 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
525 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
526 | #endif |
|
|
527 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
528 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
529 | #endif |
|
|
530 | #ifndef EV_WIN32_CLOSE_FD |
|
|
531 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
532 | #endif |
|
|
533 | |
|
|
534 | #ifdef _WIN32 |
162 | #include "ev_win32.c" |
535 | # include "ev_win32.c" |
|
|
536 | #endif |
163 | |
537 | |
164 | /*****************************************************************************/ |
538 | /*****************************************************************************/ |
165 | |
539 | |
|
|
540 | #if EV_AVOID_STDIO |
|
|
541 | static void noinline |
|
|
542 | ev_printerr (const char *msg) |
|
|
543 | { |
|
|
544 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
545 | } |
|
|
546 | #endif |
|
|
547 | |
166 | static void (*syserr_cb)(const char *msg); |
548 | static void (*syserr_cb)(const char *msg); |
167 | |
549 | |
|
|
550 | void |
168 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
551 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
169 | { |
552 | { |
170 | syserr_cb = cb; |
553 | syserr_cb = cb; |
171 | } |
554 | } |
172 | |
555 | |
173 | static void |
556 | static void noinline |
174 | syserr (const char *msg) |
557 | ev_syserr (const char *msg) |
175 | { |
558 | { |
176 | if (!msg) |
559 | if (!msg) |
177 | msg = "(libev) system error"; |
560 | msg = "(libev) system error"; |
178 | |
561 | |
179 | if (syserr_cb) |
562 | if (syserr_cb) |
180 | syserr_cb (msg); |
563 | syserr_cb (msg); |
181 | else |
564 | else |
182 | { |
565 | { |
|
|
566 | #if EV_AVOID_STDIO |
|
|
567 | const char *err = strerror (errno); |
|
|
568 | |
|
|
569 | ev_printerr (msg); |
|
|
570 | ev_printerr (": "); |
|
|
571 | ev_printerr (err); |
|
|
572 | ev_printerr ("\n"); |
|
|
573 | #else |
183 | perror (msg); |
574 | perror (msg); |
|
|
575 | #endif |
184 | abort (); |
576 | abort (); |
185 | } |
577 | } |
186 | } |
578 | } |
187 | |
579 | |
|
|
580 | static void * |
|
|
581 | ev_realloc_emul (void *ptr, long size) |
|
|
582 | { |
|
|
583 | #if __GLIBC__ |
|
|
584 | return realloc (ptr, size); |
|
|
585 | #else |
|
|
586 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
587 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
588 | * the single unix specification, so work around them here. |
|
|
589 | */ |
|
|
590 | |
|
|
591 | if (size) |
|
|
592 | return realloc (ptr, size); |
|
|
593 | |
|
|
594 | free (ptr); |
|
|
595 | return 0; |
|
|
596 | #endif |
|
|
597 | } |
|
|
598 | |
188 | static void *(*alloc)(void *ptr, long size); |
599 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
189 | |
600 | |
|
|
601 | void |
190 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
602 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
191 | { |
603 | { |
192 | alloc = cb; |
604 | alloc = cb; |
193 | } |
605 | } |
194 | |
606 | |
195 | static void * |
607 | inline_speed void * |
196 | ev_realloc (void *ptr, long size) |
608 | ev_realloc (void *ptr, long size) |
197 | { |
609 | { |
198 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
610 | ptr = alloc (ptr, size); |
199 | |
611 | |
200 | if (!ptr && size) |
612 | if (!ptr && size) |
201 | { |
613 | { |
|
|
614 | #if EV_AVOID_STDIO |
|
|
615 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
|
|
616 | #else |
202 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
617 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
618 | #endif |
203 | abort (); |
619 | abort (); |
204 | } |
620 | } |
205 | |
621 | |
206 | return ptr; |
622 | return ptr; |
207 | } |
623 | } |
… | |
… | |
209 | #define ev_malloc(size) ev_realloc (0, (size)) |
625 | #define ev_malloc(size) ev_realloc (0, (size)) |
210 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
626 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
211 | |
627 | |
212 | /*****************************************************************************/ |
628 | /*****************************************************************************/ |
213 | |
629 | |
|
|
630 | /* set in reify when reification needed */ |
|
|
631 | #define EV_ANFD_REIFY 1 |
|
|
632 | |
|
|
633 | /* file descriptor info structure */ |
214 | typedef struct |
634 | typedef struct |
215 | { |
635 | { |
216 | WL head; |
636 | WL head; |
217 | unsigned char events; |
637 | unsigned char events; /* the events watched for */ |
|
|
638 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
639 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
218 | unsigned char reify; |
640 | unsigned char unused; |
|
|
641 | #if EV_USE_EPOLL |
|
|
642 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
643 | #endif |
|
|
644 | #if EV_SELECT_IS_WINSOCKET |
|
|
645 | SOCKET handle; |
|
|
646 | #endif |
219 | } ANFD; |
647 | } ANFD; |
220 | |
648 | |
|
|
649 | /* stores the pending event set for a given watcher */ |
221 | typedef struct |
650 | typedef struct |
222 | { |
651 | { |
223 | W w; |
652 | W w; |
224 | int events; |
653 | int events; /* the pending event set for the given watcher */ |
225 | } ANPENDING; |
654 | } ANPENDING; |
|
|
655 | |
|
|
656 | #if EV_USE_INOTIFY |
|
|
657 | /* hash table entry per inotify-id */ |
|
|
658 | typedef struct |
|
|
659 | { |
|
|
660 | WL head; |
|
|
661 | } ANFS; |
|
|
662 | #endif |
|
|
663 | |
|
|
664 | /* Heap Entry */ |
|
|
665 | #if EV_HEAP_CACHE_AT |
|
|
666 | /* a heap element */ |
|
|
667 | typedef struct { |
|
|
668 | ev_tstamp at; |
|
|
669 | WT w; |
|
|
670 | } ANHE; |
|
|
671 | |
|
|
672 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
673 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
674 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
675 | #else |
|
|
676 | /* a heap element */ |
|
|
677 | typedef WT ANHE; |
|
|
678 | |
|
|
679 | #define ANHE_w(he) (he) |
|
|
680 | #define ANHE_at(he) (he)->at |
|
|
681 | #define ANHE_at_cache(he) |
|
|
682 | #endif |
226 | |
683 | |
227 | #if EV_MULTIPLICITY |
684 | #if EV_MULTIPLICITY |
228 | |
685 | |
229 | struct ev_loop |
686 | struct ev_loop |
230 | { |
687 | { |
231 | ev_tstamp ev_rt_now; |
688 | ev_tstamp ev_rt_now; |
|
|
689 | #define ev_rt_now ((loop)->ev_rt_now) |
232 | #define VAR(name,decl) decl; |
690 | #define VAR(name,decl) decl; |
233 | #include "ev_vars.h" |
691 | #include "ev_vars.h" |
234 | #undef VAR |
692 | #undef VAR |
235 | }; |
693 | }; |
236 | #include "ev_wrap.h" |
694 | #include "ev_wrap.h" |
237 | |
695 | |
238 | struct ev_loop default_loop_struct; |
696 | static struct ev_loop default_loop_struct; |
239 | static struct ev_loop *default_loop; |
697 | struct ev_loop *ev_default_loop_ptr; |
240 | |
698 | |
241 | #else |
699 | #else |
242 | |
700 | |
243 | ev_tstamp ev_rt_now; |
701 | ev_tstamp ev_rt_now; |
244 | #define VAR(name,decl) static decl; |
702 | #define VAR(name,decl) static decl; |
245 | #include "ev_vars.h" |
703 | #include "ev_vars.h" |
246 | #undef VAR |
704 | #undef VAR |
247 | |
705 | |
248 | static int default_loop; |
706 | static int ev_default_loop_ptr; |
249 | |
707 | |
250 | #endif |
708 | #endif |
|
|
709 | |
|
|
710 | #if EV_FEATURE_API |
|
|
711 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
712 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
713 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
714 | #else |
|
|
715 | # define EV_RELEASE_CB (void)0 |
|
|
716 | # define EV_ACQUIRE_CB (void)0 |
|
|
717 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
718 | #endif |
|
|
719 | |
|
|
720 | #define EVUNLOOP_RECURSE 0x80 |
251 | |
721 | |
252 | /*****************************************************************************/ |
722 | /*****************************************************************************/ |
253 | |
723 | |
|
|
724 | #ifndef EV_HAVE_EV_TIME |
254 | ev_tstamp |
725 | ev_tstamp |
255 | ev_time (void) |
726 | ev_time (void) |
256 | { |
727 | { |
257 | #if EV_USE_REALTIME |
728 | #if EV_USE_REALTIME |
|
|
729 | if (expect_true (have_realtime)) |
|
|
730 | { |
258 | struct timespec ts; |
731 | struct timespec ts; |
259 | clock_gettime (CLOCK_REALTIME, &ts); |
732 | clock_gettime (CLOCK_REALTIME, &ts); |
260 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
733 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
261 | #else |
734 | } |
|
|
735 | #endif |
|
|
736 | |
262 | struct timeval tv; |
737 | struct timeval tv; |
263 | gettimeofday (&tv, 0); |
738 | gettimeofday (&tv, 0); |
264 | return tv.tv_sec + tv.tv_usec * 1e-6; |
739 | return tv.tv_sec + tv.tv_usec * 1e-6; |
265 | #endif |
|
|
266 | } |
740 | } |
|
|
741 | #endif |
267 | |
742 | |
268 | inline ev_tstamp |
743 | inline_size ev_tstamp |
269 | get_clock (void) |
744 | get_clock (void) |
270 | { |
745 | { |
271 | #if EV_USE_MONOTONIC |
746 | #if EV_USE_MONOTONIC |
272 | if (expect_true (have_monotonic)) |
747 | if (expect_true (have_monotonic)) |
273 | { |
748 | { |
… | |
… | |
286 | { |
761 | { |
287 | return ev_rt_now; |
762 | return ev_rt_now; |
288 | } |
763 | } |
289 | #endif |
764 | #endif |
290 | |
765 | |
291 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
766 | void |
|
|
767 | ev_sleep (ev_tstamp delay) |
|
|
768 | { |
|
|
769 | if (delay > 0.) |
|
|
770 | { |
|
|
771 | #if EV_USE_NANOSLEEP |
|
|
772 | struct timespec ts; |
|
|
773 | |
|
|
774 | ts.tv_sec = (time_t)delay; |
|
|
775 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
776 | |
|
|
777 | nanosleep (&ts, 0); |
|
|
778 | #elif defined(_WIN32) |
|
|
779 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
780 | #else |
|
|
781 | struct timeval tv; |
|
|
782 | |
|
|
783 | tv.tv_sec = (time_t)delay; |
|
|
784 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
785 | |
|
|
786 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
787 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
788 | /* by older ones */ |
|
|
789 | select (0, 0, 0, 0, &tv); |
|
|
790 | #endif |
|
|
791 | } |
|
|
792 | } |
|
|
793 | |
|
|
794 | /*****************************************************************************/ |
|
|
795 | |
|
|
796 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
797 | |
|
|
798 | /* find a suitable new size for the given array, */ |
|
|
799 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
800 | inline_size int |
|
|
801 | array_nextsize (int elem, int cur, int cnt) |
|
|
802 | { |
|
|
803 | int ncur = cur + 1; |
|
|
804 | |
|
|
805 | do |
|
|
806 | ncur <<= 1; |
|
|
807 | while (cnt > ncur); |
|
|
808 | |
|
|
809 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
810 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
811 | { |
|
|
812 | ncur *= elem; |
|
|
813 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
814 | ncur = ncur - sizeof (void *) * 4; |
|
|
815 | ncur /= elem; |
|
|
816 | } |
|
|
817 | |
|
|
818 | return ncur; |
|
|
819 | } |
|
|
820 | |
|
|
821 | static noinline void * |
|
|
822 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
823 | { |
|
|
824 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
825 | return ev_realloc (base, elem * *cur); |
|
|
826 | } |
|
|
827 | |
|
|
828 | #define array_init_zero(base,count) \ |
|
|
829 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
292 | |
830 | |
293 | #define array_needsize(type,base,cur,cnt,init) \ |
831 | #define array_needsize(type,base,cur,cnt,init) \ |
294 | if (expect_false ((cnt) > cur)) \ |
832 | if (expect_false ((cnt) > (cur))) \ |
295 | { \ |
833 | { \ |
296 | int newcnt = cur; \ |
834 | int ocur_ = (cur); \ |
297 | do \ |
835 | (base) = (type *)array_realloc \ |
298 | { \ |
836 | (sizeof (type), (base), &(cur), (cnt)); \ |
299 | newcnt = array_roundsize (type, newcnt << 1); \ |
837 | init ((base) + (ocur_), (cur) - ocur_); \ |
300 | } \ |
|
|
301 | while ((cnt) > newcnt); \ |
|
|
302 | \ |
|
|
303 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
304 | init (base + cur, newcnt - cur); \ |
|
|
305 | cur = newcnt; \ |
|
|
306 | } |
838 | } |
307 | |
839 | |
|
|
840 | #if 0 |
308 | #define array_slim(type,stem) \ |
841 | #define array_slim(type,stem) \ |
309 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
842 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
310 | { \ |
843 | { \ |
311 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
844 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
312 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
845 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
313 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
846 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
314 | } |
847 | } |
315 | |
848 | #endif |
316 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
|
|
317 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
|
|
318 | #define array_free_microshit(stem) \ |
|
|
319 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
|
|
320 | |
849 | |
321 | #define array_free(stem, idx) \ |
850 | #define array_free(stem, idx) \ |
322 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
851 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
323 | |
852 | |
324 | /*****************************************************************************/ |
853 | /*****************************************************************************/ |
325 | |
854 | |
326 | static void |
855 | /* dummy callback for pending events */ |
327 | anfds_init (ANFD *base, int count) |
856 | static void noinline |
|
|
857 | pendingcb (EV_P_ ev_prepare *w, int revents) |
328 | { |
858 | { |
329 | while (count--) |
|
|
330 | { |
|
|
331 | base->head = 0; |
|
|
332 | base->events = EV_NONE; |
|
|
333 | base->reify = 0; |
|
|
334 | |
|
|
335 | ++base; |
|
|
336 | } |
|
|
337 | } |
859 | } |
338 | |
860 | |
339 | void |
861 | void noinline |
340 | ev_feed_event (EV_P_ void *w, int revents) |
862 | ev_feed_event (EV_P_ void *w, int revents) |
341 | { |
863 | { |
342 | W w_ = (W)w; |
864 | W w_ = (W)w; |
|
|
865 | int pri = ABSPRI (w_); |
343 | |
866 | |
344 | if (w_->pending) |
867 | if (expect_false (w_->pending)) |
|
|
868 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
869 | else |
345 | { |
870 | { |
|
|
871 | w_->pending = ++pendingcnt [pri]; |
|
|
872 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
873 | pendings [pri][w_->pending - 1].w = w_; |
346 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
874 | pendings [pri][w_->pending - 1].events = revents; |
347 | return; |
|
|
348 | } |
875 | } |
349 | |
|
|
350 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
351 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
|
|
352 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
353 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
354 | } |
876 | } |
355 | |
877 | |
356 | static void |
878 | inline_speed void |
|
|
879 | feed_reverse (EV_P_ W w) |
|
|
880 | { |
|
|
881 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
882 | rfeeds [rfeedcnt++] = w; |
|
|
883 | } |
|
|
884 | |
|
|
885 | inline_size void |
|
|
886 | feed_reverse_done (EV_P_ int revents) |
|
|
887 | { |
|
|
888 | do |
|
|
889 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
890 | while (rfeedcnt); |
|
|
891 | } |
|
|
892 | |
|
|
893 | inline_speed void |
357 | queue_events (EV_P_ W *events, int eventcnt, int type) |
894 | queue_events (EV_P_ W *events, int eventcnt, int type) |
358 | { |
895 | { |
359 | int i; |
896 | int i; |
360 | |
897 | |
361 | for (i = 0; i < eventcnt; ++i) |
898 | for (i = 0; i < eventcnt; ++i) |
362 | ev_feed_event (EV_A_ events [i], type); |
899 | ev_feed_event (EV_A_ events [i], type); |
363 | } |
900 | } |
364 | |
901 | |
|
|
902 | /*****************************************************************************/ |
|
|
903 | |
365 | inline void |
904 | inline_speed void |
366 | fd_event (EV_P_ int fd, int revents) |
905 | fd_event_nocheck (EV_P_ int fd, int revents) |
367 | { |
906 | { |
368 | ANFD *anfd = anfds + fd; |
907 | ANFD *anfd = anfds + fd; |
369 | struct ev_io *w; |
908 | ev_io *w; |
370 | |
909 | |
371 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
910 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
372 | { |
911 | { |
373 | int ev = w->events & revents; |
912 | int ev = w->events & revents; |
374 | |
913 | |
375 | if (ev) |
914 | if (ev) |
376 | ev_feed_event (EV_A_ (W)w, ev); |
915 | ev_feed_event (EV_A_ (W)w, ev); |
377 | } |
916 | } |
378 | } |
917 | } |
379 | |
918 | |
|
|
919 | /* do not submit kernel events for fds that have reify set */ |
|
|
920 | /* because that means they changed while we were polling for new events */ |
|
|
921 | inline_speed void |
|
|
922 | fd_event (EV_P_ int fd, int revents) |
|
|
923 | { |
|
|
924 | ANFD *anfd = anfds + fd; |
|
|
925 | |
|
|
926 | if (expect_true (!anfd->reify)) |
|
|
927 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
928 | } |
|
|
929 | |
380 | void |
930 | void |
381 | ev_feed_fd_event (EV_P_ int fd, int revents) |
931 | ev_feed_fd_event (EV_P_ int fd, int revents) |
382 | { |
932 | { |
|
|
933 | if (fd >= 0 && fd < anfdmax) |
383 | fd_event (EV_A_ fd, revents); |
934 | fd_event_nocheck (EV_A_ fd, revents); |
384 | } |
935 | } |
385 | |
936 | |
386 | /*****************************************************************************/ |
937 | /* make sure the external fd watch events are in-sync */ |
387 | |
938 | /* with the kernel/libev internal state */ |
388 | static void |
939 | inline_size void |
389 | fd_reify (EV_P) |
940 | fd_reify (EV_P) |
390 | { |
941 | { |
391 | int i; |
942 | int i; |
392 | |
943 | |
393 | for (i = 0; i < fdchangecnt; ++i) |
944 | for (i = 0; i < fdchangecnt; ++i) |
394 | { |
945 | { |
395 | int fd = fdchanges [i]; |
946 | int fd = fdchanges [i]; |
396 | ANFD *anfd = anfds + fd; |
947 | ANFD *anfd = anfds + fd; |
397 | struct ev_io *w; |
948 | ev_io *w; |
398 | |
949 | |
399 | int events = 0; |
950 | unsigned char events = 0; |
400 | |
951 | |
401 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
952 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
402 | events |= w->events; |
953 | events |= (unsigned char)w->events; |
403 | |
954 | |
|
|
955 | #if EV_SELECT_IS_WINSOCKET |
|
|
956 | if (events) |
|
|
957 | { |
|
|
958 | unsigned long arg; |
|
|
959 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
960 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
961 | } |
|
|
962 | #endif |
|
|
963 | |
|
|
964 | { |
|
|
965 | unsigned char o_events = anfd->events; |
|
|
966 | unsigned char o_reify = anfd->reify; |
|
|
967 | |
404 | anfd->reify = 0; |
968 | anfd->reify = 0; |
405 | |
|
|
406 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
407 | anfd->events = events; |
969 | anfd->events = events; |
|
|
970 | |
|
|
971 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
972 | backend_modify (EV_A_ fd, o_events, events); |
|
|
973 | } |
408 | } |
974 | } |
409 | |
975 | |
410 | fdchangecnt = 0; |
976 | fdchangecnt = 0; |
411 | } |
977 | } |
412 | |
978 | |
413 | static void |
979 | /* something about the given fd changed */ |
|
|
980 | inline_size void |
414 | fd_change (EV_P_ int fd) |
981 | fd_change (EV_P_ int fd, int flags) |
415 | { |
982 | { |
416 | if (anfds [fd].reify) |
983 | unsigned char reify = anfds [fd].reify; |
417 | return; |
|
|
418 | |
|
|
419 | anfds [fd].reify = 1; |
984 | anfds [fd].reify |= flags; |
420 | |
985 | |
|
|
986 | if (expect_true (!reify)) |
|
|
987 | { |
421 | ++fdchangecnt; |
988 | ++fdchangecnt; |
422 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
989 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
423 | fdchanges [fdchangecnt - 1] = fd; |
990 | fdchanges [fdchangecnt - 1] = fd; |
|
|
991 | } |
424 | } |
992 | } |
425 | |
993 | |
426 | static void |
994 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
995 | inline_speed void |
427 | fd_kill (EV_P_ int fd) |
996 | fd_kill (EV_P_ int fd) |
428 | { |
997 | { |
429 | struct ev_io *w; |
998 | ev_io *w; |
430 | |
999 | |
431 | while ((w = (struct ev_io *)anfds [fd].head)) |
1000 | while ((w = (ev_io *)anfds [fd].head)) |
432 | { |
1001 | { |
433 | ev_io_stop (EV_A_ w); |
1002 | ev_io_stop (EV_A_ w); |
434 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1003 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
435 | } |
1004 | } |
436 | } |
1005 | } |
437 | |
1006 | |
438 | static int |
1007 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1008 | inline_size int |
439 | fd_valid (int fd) |
1009 | fd_valid (int fd) |
440 | { |
1010 | { |
441 | #ifdef WIN32 |
1011 | #ifdef _WIN32 |
442 | return !!win32_get_osfhandle (fd); |
1012 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
443 | #else |
1013 | #else |
444 | return fcntl (fd, F_GETFD) != -1; |
1014 | return fcntl (fd, F_GETFD) != -1; |
445 | #endif |
1015 | #endif |
446 | } |
1016 | } |
447 | |
1017 | |
448 | /* called on EBADF to verify fds */ |
1018 | /* called on EBADF to verify fds */ |
449 | static void |
1019 | static void noinline |
450 | fd_ebadf (EV_P) |
1020 | fd_ebadf (EV_P) |
451 | { |
1021 | { |
452 | int fd; |
1022 | int fd; |
453 | |
1023 | |
454 | for (fd = 0; fd < anfdmax; ++fd) |
1024 | for (fd = 0; fd < anfdmax; ++fd) |
455 | if (anfds [fd].events) |
1025 | if (anfds [fd].events) |
456 | if (!fd_valid (fd) == -1 && errno == EBADF) |
1026 | if (!fd_valid (fd) && errno == EBADF) |
457 | fd_kill (EV_A_ fd); |
1027 | fd_kill (EV_A_ fd); |
458 | } |
1028 | } |
459 | |
1029 | |
460 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1030 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
461 | static void |
1031 | static void noinline |
462 | fd_enomem (EV_P) |
1032 | fd_enomem (EV_P) |
463 | { |
1033 | { |
464 | int fd; |
1034 | int fd; |
465 | |
1035 | |
466 | for (fd = anfdmax; fd--; ) |
1036 | for (fd = anfdmax; fd--; ) |
467 | if (anfds [fd].events) |
1037 | if (anfds [fd].events) |
468 | { |
1038 | { |
469 | fd_kill (EV_A_ fd); |
1039 | fd_kill (EV_A_ fd); |
470 | return; |
1040 | break; |
471 | } |
1041 | } |
472 | } |
1042 | } |
473 | |
1043 | |
474 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
1044 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
475 | static void |
1045 | static void noinline |
476 | fd_rearm_all (EV_P) |
1046 | fd_rearm_all (EV_P) |
477 | { |
1047 | { |
478 | int fd; |
1048 | int fd; |
479 | |
1049 | |
480 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
481 | for (fd = 0; fd < anfdmax; ++fd) |
1050 | for (fd = 0; fd < anfdmax; ++fd) |
482 | if (anfds [fd].events) |
1051 | if (anfds [fd].events) |
483 | { |
1052 | { |
484 | anfds [fd].events = 0; |
1053 | anfds [fd].events = 0; |
485 | fd_change (EV_A_ fd); |
1054 | anfds [fd].emask = 0; |
|
|
1055 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
486 | } |
1056 | } |
487 | } |
1057 | } |
488 | |
1058 | |
|
|
1059 | /* used to prepare libev internal fd's */ |
|
|
1060 | /* this is not fork-safe */ |
|
|
1061 | inline_speed void |
|
|
1062 | fd_intern (int fd) |
|
|
1063 | { |
|
|
1064 | #ifdef _WIN32 |
|
|
1065 | unsigned long arg = 1; |
|
|
1066 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1067 | #else |
|
|
1068 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1069 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1070 | #endif |
|
|
1071 | } |
|
|
1072 | |
489 | /*****************************************************************************/ |
1073 | /*****************************************************************************/ |
490 | |
1074 | |
|
|
1075 | /* |
|
|
1076 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
1077 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1078 | * the branching factor of the d-tree. |
|
|
1079 | */ |
|
|
1080 | |
|
|
1081 | /* |
|
|
1082 | * at the moment we allow libev the luxury of two heaps, |
|
|
1083 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
1084 | * which is more cache-efficient. |
|
|
1085 | * the difference is about 5% with 50000+ watchers. |
|
|
1086 | */ |
|
|
1087 | #if EV_USE_4HEAP |
|
|
1088 | |
|
|
1089 | #define DHEAP 4 |
|
|
1090 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1091 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1092 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
1093 | |
|
|
1094 | /* away from the root */ |
|
|
1095 | inline_speed void |
|
|
1096 | downheap (ANHE *heap, int N, int k) |
|
|
1097 | { |
|
|
1098 | ANHE he = heap [k]; |
|
|
1099 | ANHE *E = heap + N + HEAP0; |
|
|
1100 | |
|
|
1101 | for (;;) |
|
|
1102 | { |
|
|
1103 | ev_tstamp minat; |
|
|
1104 | ANHE *minpos; |
|
|
1105 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
1106 | |
|
|
1107 | /* find minimum child */ |
|
|
1108 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
1109 | { |
|
|
1110 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1111 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1112 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1113 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1114 | } |
|
|
1115 | else if (pos < E) |
|
|
1116 | { |
|
|
1117 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1118 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1119 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1120 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1121 | } |
|
|
1122 | else |
|
|
1123 | break; |
|
|
1124 | |
|
|
1125 | if (ANHE_at (he) <= minat) |
|
|
1126 | break; |
|
|
1127 | |
|
|
1128 | heap [k] = *minpos; |
|
|
1129 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1130 | |
|
|
1131 | k = minpos - heap; |
|
|
1132 | } |
|
|
1133 | |
|
|
1134 | heap [k] = he; |
|
|
1135 | ev_active (ANHE_w (he)) = k; |
|
|
1136 | } |
|
|
1137 | |
|
|
1138 | #else /* 4HEAP */ |
|
|
1139 | |
|
|
1140 | #define HEAP0 1 |
|
|
1141 | #define HPARENT(k) ((k) >> 1) |
|
|
1142 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1143 | |
|
|
1144 | /* away from the root */ |
|
|
1145 | inline_speed void |
|
|
1146 | downheap (ANHE *heap, int N, int k) |
|
|
1147 | { |
|
|
1148 | ANHE he = heap [k]; |
|
|
1149 | |
|
|
1150 | for (;;) |
|
|
1151 | { |
|
|
1152 | int c = k << 1; |
|
|
1153 | |
|
|
1154 | if (c >= N + HEAP0) |
|
|
1155 | break; |
|
|
1156 | |
|
|
1157 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1158 | ? 1 : 0; |
|
|
1159 | |
|
|
1160 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1161 | break; |
|
|
1162 | |
|
|
1163 | heap [k] = heap [c]; |
|
|
1164 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1165 | |
|
|
1166 | k = c; |
|
|
1167 | } |
|
|
1168 | |
|
|
1169 | heap [k] = he; |
|
|
1170 | ev_active (ANHE_w (he)) = k; |
|
|
1171 | } |
|
|
1172 | #endif |
|
|
1173 | |
|
|
1174 | /* towards the root */ |
|
|
1175 | inline_speed void |
|
|
1176 | upheap (ANHE *heap, int k) |
|
|
1177 | { |
|
|
1178 | ANHE he = heap [k]; |
|
|
1179 | |
|
|
1180 | for (;;) |
|
|
1181 | { |
|
|
1182 | int p = HPARENT (k); |
|
|
1183 | |
|
|
1184 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1185 | break; |
|
|
1186 | |
|
|
1187 | heap [k] = heap [p]; |
|
|
1188 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1189 | k = p; |
|
|
1190 | } |
|
|
1191 | |
|
|
1192 | heap [k] = he; |
|
|
1193 | ev_active (ANHE_w (he)) = k; |
|
|
1194 | } |
|
|
1195 | |
|
|
1196 | /* move an element suitably so it is in a correct place */ |
|
|
1197 | inline_size void |
|
|
1198 | adjustheap (ANHE *heap, int N, int k) |
|
|
1199 | { |
|
|
1200 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
1201 | upheap (heap, k); |
|
|
1202 | else |
|
|
1203 | downheap (heap, N, k); |
|
|
1204 | } |
|
|
1205 | |
|
|
1206 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1207 | inline_size void |
|
|
1208 | reheap (ANHE *heap, int N) |
|
|
1209 | { |
|
|
1210 | int i; |
|
|
1211 | |
|
|
1212 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1213 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1214 | for (i = 0; i < N; ++i) |
|
|
1215 | upheap (heap, i + HEAP0); |
|
|
1216 | } |
|
|
1217 | |
|
|
1218 | /*****************************************************************************/ |
|
|
1219 | |
|
|
1220 | /* associate signal watchers to a signal signal */ |
|
|
1221 | typedef struct |
|
|
1222 | { |
|
|
1223 | EV_ATOMIC_T pending; |
|
|
1224 | #if EV_MULTIPLICITY |
|
|
1225 | EV_P; |
|
|
1226 | #endif |
|
|
1227 | WL head; |
|
|
1228 | } ANSIG; |
|
|
1229 | |
|
|
1230 | static ANSIG signals [EV_NSIG - 1]; |
|
|
1231 | |
|
|
1232 | /*****************************************************************************/ |
|
|
1233 | |
|
|
1234 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1235 | |
|
|
1236 | static void noinline |
|
|
1237 | evpipe_init (EV_P) |
|
|
1238 | { |
|
|
1239 | if (!ev_is_active (&pipe_w)) |
|
|
1240 | { |
|
|
1241 | # if EV_USE_EVENTFD |
|
|
1242 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1243 | if (evfd < 0 && errno == EINVAL) |
|
|
1244 | evfd = eventfd (0, 0); |
|
|
1245 | |
|
|
1246 | if (evfd >= 0) |
|
|
1247 | { |
|
|
1248 | evpipe [0] = -1; |
|
|
1249 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1250 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1251 | } |
|
|
1252 | else |
|
|
1253 | # endif |
|
|
1254 | { |
|
|
1255 | while (pipe (evpipe)) |
|
|
1256 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1257 | |
|
|
1258 | fd_intern (evpipe [0]); |
|
|
1259 | fd_intern (evpipe [1]); |
|
|
1260 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | ev_io_start (EV_A_ &pipe_w); |
|
|
1264 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1265 | } |
|
|
1266 | } |
|
|
1267 | |
|
|
1268 | inline_size void |
|
|
1269 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1270 | { |
|
|
1271 | if (!*flag) |
|
|
1272 | { |
|
|
1273 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1274 | char dummy; |
|
|
1275 | |
|
|
1276 | *flag = 1; |
|
|
1277 | |
|
|
1278 | #if EV_USE_EVENTFD |
|
|
1279 | if (evfd >= 0) |
|
|
1280 | { |
|
|
1281 | uint64_t counter = 1; |
|
|
1282 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1283 | } |
|
|
1284 | else |
|
|
1285 | #endif |
|
|
1286 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1287 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1288 | /* so when you think this write should be a send instead, please find out */ |
|
|
1289 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1290 | /* tell me. thank you. */ |
|
|
1291 | write (evpipe [1], &dummy, 1); |
|
|
1292 | |
|
|
1293 | errno = old_errno; |
|
|
1294 | } |
|
|
1295 | } |
|
|
1296 | |
|
|
1297 | /* called whenever the libev signal pipe */ |
|
|
1298 | /* got some events (signal, async) */ |
491 | static void |
1299 | static void |
492 | upheap (WT *heap, int k) |
1300 | pipecb (EV_P_ ev_io *iow, int revents) |
493 | { |
1301 | { |
494 | WT w = heap [k]; |
1302 | int i; |
495 | |
1303 | |
496 | while (k && heap [k >> 1]->at > w->at) |
1304 | #if EV_USE_EVENTFD |
497 | { |
1305 | if (evfd >= 0) |
498 | heap [k] = heap [k >> 1]; |
|
|
499 | ((W)heap [k])->active = k + 1; |
|
|
500 | k >>= 1; |
|
|
501 | } |
1306 | { |
|
|
1307 | uint64_t counter; |
|
|
1308 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1309 | } |
|
|
1310 | else |
|
|
1311 | #endif |
|
|
1312 | { |
|
|
1313 | char dummy; |
|
|
1314 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
|
|
1315 | read (evpipe [0], &dummy, 1); |
|
|
1316 | } |
502 | |
1317 | |
503 | heap [k] = w; |
1318 | if (sig_pending) |
504 | ((W)heap [k])->active = k + 1; |
1319 | { |
|
|
1320 | sig_pending = 0; |
505 | |
1321 | |
|
|
1322 | for (i = EV_NSIG - 1; i--; ) |
|
|
1323 | if (expect_false (signals [i].pending)) |
|
|
1324 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | #if EV_ASYNC_ENABLE |
|
|
1328 | if (async_pending) |
|
|
1329 | { |
|
|
1330 | async_pending = 0; |
|
|
1331 | |
|
|
1332 | for (i = asynccnt; i--; ) |
|
|
1333 | if (asyncs [i]->sent) |
|
|
1334 | { |
|
|
1335 | asyncs [i]->sent = 0; |
|
|
1336 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1337 | } |
|
|
1338 | } |
|
|
1339 | #endif |
506 | } |
1340 | } |
|
|
1341 | |
|
|
1342 | /*****************************************************************************/ |
507 | |
1343 | |
508 | static void |
1344 | static void |
509 | downheap (WT *heap, int N, int k) |
|
|
510 | { |
|
|
511 | WT w = heap [k]; |
|
|
512 | |
|
|
513 | while (k < (N >> 1)) |
|
|
514 | { |
|
|
515 | int j = k << 1; |
|
|
516 | |
|
|
517 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
518 | ++j; |
|
|
519 | |
|
|
520 | if (w->at <= heap [j]->at) |
|
|
521 | break; |
|
|
522 | |
|
|
523 | heap [k] = heap [j]; |
|
|
524 | ((W)heap [k])->active = k + 1; |
|
|
525 | k = j; |
|
|
526 | } |
|
|
527 | |
|
|
528 | heap [k] = w; |
|
|
529 | ((W)heap [k])->active = k + 1; |
|
|
530 | } |
|
|
531 | |
|
|
532 | inline void |
|
|
533 | adjustheap (WT *heap, int N, int k, ev_tstamp at) |
|
|
534 | { |
|
|
535 | ev_tstamp old_at = heap [k]->at; |
|
|
536 | heap [k]->at = at; |
|
|
537 | |
|
|
538 | if (old_at < at) |
|
|
539 | downheap (heap, N, k); |
|
|
540 | else |
|
|
541 | upheap (heap, k); |
|
|
542 | } |
|
|
543 | |
|
|
544 | /*****************************************************************************/ |
|
|
545 | |
|
|
546 | typedef struct |
|
|
547 | { |
|
|
548 | WL head; |
|
|
549 | sig_atomic_t volatile gotsig; |
|
|
550 | } ANSIG; |
|
|
551 | |
|
|
552 | static ANSIG *signals; |
|
|
553 | static int signalmax; |
|
|
554 | |
|
|
555 | static int sigpipe [2]; |
|
|
556 | static sig_atomic_t volatile gotsig; |
|
|
557 | static struct ev_io sigev; |
|
|
558 | |
|
|
559 | static void |
|
|
560 | signals_init (ANSIG *base, int count) |
|
|
561 | { |
|
|
562 | while (count--) |
|
|
563 | { |
|
|
564 | base->head = 0; |
|
|
565 | base->gotsig = 0; |
|
|
566 | |
|
|
567 | ++base; |
|
|
568 | } |
|
|
569 | } |
|
|
570 | |
|
|
571 | static void |
|
|
572 | sighandler (int signum) |
1345 | ev_sighandler (int signum) |
573 | { |
1346 | { |
574 | #if WIN32 |
1347 | #if EV_MULTIPLICITY |
575 | signal (signum, sighandler); |
1348 | EV_P = signals [signum - 1].loop; |
576 | #endif |
1349 | #endif |
577 | |
1350 | |
578 | signals [signum - 1].gotsig = 1; |
|
|
579 | |
|
|
580 | if (!gotsig) |
|
|
581 | { |
|
|
582 | int old_errno = errno; |
|
|
583 | gotsig = 1; |
|
|
584 | #ifdef WIN32 |
1351 | #ifdef _WIN32 |
585 | send (sigpipe [1], &signum, 1, MSG_DONTWAIT); |
1352 | signal (signum, ev_sighandler); |
586 | #else |
|
|
587 | write (sigpipe [1], &signum, 1); |
|
|
588 | #endif |
1353 | #endif |
589 | errno = old_errno; |
|
|
590 | } |
|
|
591 | } |
|
|
592 | |
1354 | |
593 | void |
1355 | signals [signum - 1].pending = 1; |
|
|
1356 | evpipe_write (EV_A_ &sig_pending); |
|
|
1357 | } |
|
|
1358 | |
|
|
1359 | void noinline |
594 | ev_feed_signal_event (EV_P_ int signum) |
1360 | ev_feed_signal_event (EV_P_ int signum) |
595 | { |
1361 | { |
596 | WL w; |
1362 | WL w; |
597 | |
1363 | |
|
|
1364 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1365 | return; |
|
|
1366 | |
|
|
1367 | --signum; |
|
|
1368 | |
598 | #if EV_MULTIPLICITY |
1369 | #if EV_MULTIPLICITY |
599 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
1370 | /* it is permissible to try to feed a signal to the wrong loop */ |
600 | #endif |
1371 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
601 | |
1372 | |
602 | --signum; |
1373 | if (expect_false (signals [signum].loop != EV_A)) |
603 | |
|
|
604 | if (signum < 0 || signum >= signalmax) |
|
|
605 | return; |
1374 | return; |
|
|
1375 | #endif |
606 | |
1376 | |
607 | signals [signum].gotsig = 0; |
1377 | signals [signum].pending = 0; |
608 | |
1378 | |
609 | for (w = signals [signum].head; w; w = w->next) |
1379 | for (w = signals [signum].head; w; w = w->next) |
610 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1380 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
611 | } |
1381 | } |
612 | |
1382 | |
|
|
1383 | #if EV_USE_SIGNALFD |
613 | static void |
1384 | static void |
614 | sigcb (EV_P_ struct ev_io *iow, int revents) |
1385 | sigfdcb (EV_P_ ev_io *iow, int revents) |
615 | { |
1386 | { |
616 | int signum; |
1387 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
617 | |
1388 | |
618 | #ifdef WIN32 |
1389 | for (;;) |
619 | recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); |
1390 | { |
620 | #else |
1391 | ssize_t res = read (sigfd, si, sizeof (si)); |
621 | read (sigpipe [0], &revents, 1); |
|
|
622 | #endif |
|
|
623 | gotsig = 0; |
|
|
624 | |
1392 | |
625 | for (signum = signalmax; signum--; ) |
1393 | /* not ISO-C, as res might be -1, but works with SuS */ |
626 | if (signals [signum].gotsig) |
1394 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
627 | ev_feed_signal_event (EV_A_ signum + 1); |
1395 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
628 | } |
|
|
629 | |
1396 | |
630 | static void |
1397 | if (res < (ssize_t)sizeof (si)) |
631 | siginit (EV_P) |
1398 | break; |
632 | { |
1399 | } |
633 | #ifndef WIN32 |
|
|
634 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
635 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
636 | |
|
|
637 | /* rather than sort out wether we really need nb, set it */ |
|
|
638 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
639 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
640 | #endif |
|
|
641 | |
|
|
642 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
643 | ev_io_start (EV_A_ &sigev); |
|
|
644 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
645 | } |
1400 | } |
|
|
1401 | #endif |
|
|
1402 | |
|
|
1403 | #endif |
646 | |
1404 | |
647 | /*****************************************************************************/ |
1405 | /*****************************************************************************/ |
648 | |
1406 | |
649 | static struct ev_child *childs [PID_HASHSIZE]; |
1407 | #if EV_CHILD_ENABLE |
|
|
1408 | static WL childs [EV_PID_HASHSIZE]; |
650 | |
1409 | |
651 | #ifndef WIN32 |
|
|
652 | |
|
|
653 | static struct ev_signal childev; |
1410 | static ev_signal childev; |
|
|
1411 | |
|
|
1412 | #ifndef WIFCONTINUED |
|
|
1413 | # define WIFCONTINUED(status) 0 |
|
|
1414 | #endif |
|
|
1415 | |
|
|
1416 | /* handle a single child status event */ |
|
|
1417 | inline_speed void |
|
|
1418 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1419 | { |
|
|
1420 | ev_child *w; |
|
|
1421 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1422 | |
|
|
1423 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1424 | { |
|
|
1425 | if ((w->pid == pid || !w->pid) |
|
|
1426 | && (!traced || (w->flags & 1))) |
|
|
1427 | { |
|
|
1428 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1429 | w->rpid = pid; |
|
|
1430 | w->rstatus = status; |
|
|
1431 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1432 | } |
|
|
1433 | } |
|
|
1434 | } |
654 | |
1435 | |
655 | #ifndef WCONTINUED |
1436 | #ifndef WCONTINUED |
656 | # define WCONTINUED 0 |
1437 | # define WCONTINUED 0 |
657 | #endif |
1438 | #endif |
658 | |
1439 | |
|
|
1440 | /* called on sigchld etc., calls waitpid */ |
659 | static void |
1441 | static void |
660 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
661 | { |
|
|
662 | struct ev_child *w; |
|
|
663 | |
|
|
664 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
665 | if (w->pid == pid || !w->pid) |
|
|
666 | { |
|
|
667 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
668 | w->rpid = pid; |
|
|
669 | w->rstatus = status; |
|
|
670 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
671 | } |
|
|
672 | } |
|
|
673 | |
|
|
674 | static void |
|
|
675 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1442 | childcb (EV_P_ ev_signal *sw, int revents) |
676 | { |
1443 | { |
677 | int pid, status; |
1444 | int pid, status; |
678 | |
1445 | |
|
|
1446 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
679 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1447 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
680 | { |
1448 | if (!WCONTINUED |
|
|
1449 | || errno != EINVAL |
|
|
1450 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1451 | return; |
|
|
1452 | |
681 | /* make sure we are called again until all childs have been reaped */ |
1453 | /* make sure we are called again until all children have been reaped */ |
|
|
1454 | /* we need to do it this way so that the callback gets called before we continue */ |
682 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1455 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
683 | |
1456 | |
684 | child_reap (EV_A_ sw, pid, pid, status); |
1457 | child_reap (EV_A_ pid, pid, status); |
|
|
1458 | if ((EV_PID_HASHSIZE) > 1) |
685 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1459 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
686 | } |
|
|
687 | } |
1460 | } |
688 | |
1461 | |
689 | #endif |
1462 | #endif |
690 | |
1463 | |
691 | /*****************************************************************************/ |
1464 | /*****************************************************************************/ |
692 | |
1465 | |
|
|
1466 | #if EV_USE_PORT |
|
|
1467 | # include "ev_port.c" |
|
|
1468 | #endif |
693 | #if EV_USE_KQUEUE |
1469 | #if EV_USE_KQUEUE |
694 | # include "ev_kqueue.c" |
1470 | # include "ev_kqueue.c" |
695 | #endif |
1471 | #endif |
696 | #if EV_USE_EPOLL |
1472 | #if EV_USE_EPOLL |
697 | # include "ev_epoll.c" |
1473 | # include "ev_epoll.c" |
… | |
… | |
714 | { |
1490 | { |
715 | return EV_VERSION_MINOR; |
1491 | return EV_VERSION_MINOR; |
716 | } |
1492 | } |
717 | |
1493 | |
718 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1494 | /* return true if we are running with elevated privileges and should ignore env variables */ |
719 | static int |
1495 | int inline_size |
720 | enable_secure (void) |
1496 | enable_secure (void) |
721 | { |
1497 | { |
722 | #ifdef WIN32 |
1498 | #ifdef _WIN32 |
723 | return 0; |
1499 | return 0; |
724 | #else |
1500 | #else |
725 | return getuid () != geteuid () |
1501 | return getuid () != geteuid () |
726 | || getgid () != getegid (); |
1502 | || getgid () != getegid (); |
727 | #endif |
1503 | #endif |
728 | } |
1504 | } |
729 | |
1505 | |
730 | int |
1506 | unsigned int |
|
|
1507 | ev_supported_backends (void) |
|
|
1508 | { |
|
|
1509 | unsigned int flags = 0; |
|
|
1510 | |
|
|
1511 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1512 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1513 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1514 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1515 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1516 | |
|
|
1517 | return flags; |
|
|
1518 | } |
|
|
1519 | |
|
|
1520 | unsigned int |
|
|
1521 | ev_recommended_backends (void) |
|
|
1522 | { |
|
|
1523 | unsigned int flags = ev_supported_backends (); |
|
|
1524 | |
|
|
1525 | #ifndef __NetBSD__ |
|
|
1526 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1527 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1528 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1529 | #endif |
|
|
1530 | #ifdef __APPLE__ |
|
|
1531 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1532 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1533 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1534 | #endif |
|
|
1535 | #ifdef __FreeBSD__ |
|
|
1536 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
1537 | #endif |
|
|
1538 | |
|
|
1539 | return flags; |
|
|
1540 | } |
|
|
1541 | |
|
|
1542 | unsigned int |
|
|
1543 | ev_embeddable_backends (void) |
|
|
1544 | { |
|
|
1545 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1546 | |
|
|
1547 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1548 | /* please fix it and tell me how to detect the fix */ |
|
|
1549 | flags &= ~EVBACKEND_EPOLL; |
|
|
1550 | |
|
|
1551 | return flags; |
|
|
1552 | } |
|
|
1553 | |
|
|
1554 | unsigned int |
|
|
1555 | ev_backend (EV_P) |
|
|
1556 | { |
|
|
1557 | return backend; |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | #if EV_FEATURE_API |
|
|
1561 | unsigned int |
|
|
1562 | ev_iteration (EV_P) |
|
|
1563 | { |
|
|
1564 | return loop_count; |
|
|
1565 | } |
|
|
1566 | |
|
|
1567 | unsigned int |
731 | ev_method (EV_P) |
1568 | ev_depth (EV_P) |
732 | { |
1569 | { |
733 | return method; |
1570 | return loop_depth; |
734 | } |
1571 | } |
735 | |
1572 | |
736 | static void |
1573 | void |
737 | loop_init (EV_P_ int methods) |
1574 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
738 | { |
1575 | { |
739 | if (!method) |
1576 | io_blocktime = interval; |
|
|
1577 | } |
|
|
1578 | |
|
|
1579 | void |
|
|
1580 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1581 | { |
|
|
1582 | timeout_blocktime = interval; |
|
|
1583 | } |
|
|
1584 | |
|
|
1585 | void |
|
|
1586 | ev_set_userdata (EV_P_ void *data) |
|
|
1587 | { |
|
|
1588 | userdata = data; |
|
|
1589 | } |
|
|
1590 | |
|
|
1591 | void * |
|
|
1592 | ev_userdata (EV_P) |
|
|
1593 | { |
|
|
1594 | return userdata; |
|
|
1595 | } |
|
|
1596 | |
|
|
1597 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1598 | { |
|
|
1599 | invoke_cb = invoke_pending_cb; |
|
|
1600 | } |
|
|
1601 | |
|
|
1602 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1603 | { |
|
|
1604 | release_cb = release; |
|
|
1605 | acquire_cb = acquire; |
|
|
1606 | } |
|
|
1607 | #endif |
|
|
1608 | |
|
|
1609 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1610 | static void noinline |
|
|
1611 | loop_init (EV_P_ unsigned int flags) |
|
|
1612 | { |
|
|
1613 | if (!backend) |
740 | { |
1614 | { |
|
|
1615 | #if EV_USE_REALTIME |
|
|
1616 | if (!have_realtime) |
|
|
1617 | { |
|
|
1618 | struct timespec ts; |
|
|
1619 | |
|
|
1620 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1621 | have_realtime = 1; |
|
|
1622 | } |
|
|
1623 | #endif |
|
|
1624 | |
741 | #if EV_USE_MONOTONIC |
1625 | #if EV_USE_MONOTONIC |
|
|
1626 | if (!have_monotonic) |
|
|
1627 | { |
|
|
1628 | struct timespec ts; |
|
|
1629 | |
|
|
1630 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1631 | have_monotonic = 1; |
|
|
1632 | } |
|
|
1633 | #endif |
|
|
1634 | |
|
|
1635 | /* pid check not overridable via env */ |
|
|
1636 | #ifndef _WIN32 |
|
|
1637 | if (flags & EVFLAG_FORKCHECK) |
|
|
1638 | curpid = getpid (); |
|
|
1639 | #endif |
|
|
1640 | |
|
|
1641 | if (!(flags & EVFLAG_NOENV) |
|
|
1642 | && !enable_secure () |
|
|
1643 | && getenv ("LIBEV_FLAGS")) |
|
|
1644 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1645 | |
|
|
1646 | ev_rt_now = ev_time (); |
|
|
1647 | mn_now = get_clock (); |
|
|
1648 | now_floor = mn_now; |
|
|
1649 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1650 | #if EV_FEATURE_API |
|
|
1651 | invoke_cb = ev_invoke_pending; |
|
|
1652 | #endif |
|
|
1653 | |
|
|
1654 | io_blocktime = 0.; |
|
|
1655 | timeout_blocktime = 0.; |
|
|
1656 | backend = 0; |
|
|
1657 | backend_fd = -1; |
|
|
1658 | sig_pending = 0; |
|
|
1659 | #if EV_ASYNC_ENABLE |
|
|
1660 | async_pending = 0; |
|
|
1661 | #endif |
|
|
1662 | #if EV_USE_INOTIFY |
|
|
1663 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
1664 | #endif |
|
|
1665 | #if EV_USE_SIGNALFD |
|
|
1666 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
1667 | #endif |
|
|
1668 | |
|
|
1669 | if (!(flags & 0x0000ffffU)) |
|
|
1670 | flags |= ev_recommended_backends (); |
|
|
1671 | |
|
|
1672 | #if EV_USE_PORT |
|
|
1673 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1674 | #endif |
|
|
1675 | #if EV_USE_KQUEUE |
|
|
1676 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1677 | #endif |
|
|
1678 | #if EV_USE_EPOLL |
|
|
1679 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1680 | #endif |
|
|
1681 | #if EV_USE_POLL |
|
|
1682 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1683 | #endif |
|
|
1684 | #if EV_USE_SELECT |
|
|
1685 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1686 | #endif |
|
|
1687 | |
|
|
1688 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1689 | |
|
|
1690 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1691 | ev_init (&pipe_w, pipecb); |
|
|
1692 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1693 | #endif |
|
|
1694 | } |
|
|
1695 | } |
|
|
1696 | |
|
|
1697 | /* free up a loop structure */ |
|
|
1698 | static void noinline |
|
|
1699 | loop_destroy (EV_P) |
|
|
1700 | { |
|
|
1701 | int i; |
|
|
1702 | |
|
|
1703 | if (ev_is_active (&pipe_w)) |
|
|
1704 | { |
|
|
1705 | /*ev_ref (EV_A);*/ |
|
|
1706 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
1707 | |
|
|
1708 | #if EV_USE_EVENTFD |
|
|
1709 | if (evfd >= 0) |
|
|
1710 | close (evfd); |
|
|
1711 | #endif |
|
|
1712 | |
|
|
1713 | if (evpipe [0] >= 0) |
|
|
1714 | { |
|
|
1715 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1716 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1717 | } |
|
|
1718 | } |
|
|
1719 | |
|
|
1720 | #if EV_USE_SIGNALFD |
|
|
1721 | if (ev_is_active (&sigfd_w)) |
|
|
1722 | close (sigfd); |
|
|
1723 | #endif |
|
|
1724 | |
|
|
1725 | #if EV_USE_INOTIFY |
|
|
1726 | if (fs_fd >= 0) |
|
|
1727 | close (fs_fd); |
|
|
1728 | #endif |
|
|
1729 | |
|
|
1730 | if (backend_fd >= 0) |
|
|
1731 | close (backend_fd); |
|
|
1732 | |
|
|
1733 | #if EV_USE_PORT |
|
|
1734 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1735 | #endif |
|
|
1736 | #if EV_USE_KQUEUE |
|
|
1737 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1738 | #endif |
|
|
1739 | #if EV_USE_EPOLL |
|
|
1740 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1741 | #endif |
|
|
1742 | #if EV_USE_POLL |
|
|
1743 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1744 | #endif |
|
|
1745 | #if EV_USE_SELECT |
|
|
1746 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1747 | #endif |
|
|
1748 | |
|
|
1749 | for (i = NUMPRI; i--; ) |
|
|
1750 | { |
|
|
1751 | array_free (pending, [i]); |
|
|
1752 | #if EV_IDLE_ENABLE |
|
|
1753 | array_free (idle, [i]); |
|
|
1754 | #endif |
|
|
1755 | } |
|
|
1756 | |
|
|
1757 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
1758 | |
|
|
1759 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1760 | array_free (rfeed, EMPTY); |
|
|
1761 | array_free (fdchange, EMPTY); |
|
|
1762 | array_free (timer, EMPTY); |
|
|
1763 | #if EV_PERIODIC_ENABLE |
|
|
1764 | array_free (periodic, EMPTY); |
|
|
1765 | #endif |
|
|
1766 | #if EV_FORK_ENABLE |
|
|
1767 | array_free (fork, EMPTY); |
|
|
1768 | #endif |
|
|
1769 | array_free (prepare, EMPTY); |
|
|
1770 | array_free (check, EMPTY); |
|
|
1771 | #if EV_ASYNC_ENABLE |
|
|
1772 | array_free (async, EMPTY); |
|
|
1773 | #endif |
|
|
1774 | |
|
|
1775 | backend = 0; |
|
|
1776 | } |
|
|
1777 | |
|
|
1778 | #if EV_USE_INOTIFY |
|
|
1779 | inline_size void infy_fork (EV_P); |
|
|
1780 | #endif |
|
|
1781 | |
|
|
1782 | inline_size void |
|
|
1783 | loop_fork (EV_P) |
|
|
1784 | { |
|
|
1785 | #if EV_USE_PORT |
|
|
1786 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1787 | #endif |
|
|
1788 | #if EV_USE_KQUEUE |
|
|
1789 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1790 | #endif |
|
|
1791 | #if EV_USE_EPOLL |
|
|
1792 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1793 | #endif |
|
|
1794 | #if EV_USE_INOTIFY |
|
|
1795 | infy_fork (EV_A); |
|
|
1796 | #endif |
|
|
1797 | |
|
|
1798 | if (ev_is_active (&pipe_w)) |
|
|
1799 | { |
|
|
1800 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1801 | /* while we modify the fd vars */ |
|
|
1802 | sig_pending = 1; |
|
|
1803 | #if EV_ASYNC_ENABLE |
|
|
1804 | async_pending = 1; |
|
|
1805 | #endif |
|
|
1806 | |
|
|
1807 | ev_ref (EV_A); |
|
|
1808 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1809 | |
|
|
1810 | #if EV_USE_EVENTFD |
|
|
1811 | if (evfd >= 0) |
|
|
1812 | close (evfd); |
|
|
1813 | #endif |
|
|
1814 | |
|
|
1815 | if (evpipe [0] >= 0) |
|
|
1816 | { |
|
|
1817 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1818 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1819 | } |
|
|
1820 | |
|
|
1821 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1822 | evpipe_init (EV_A); |
|
|
1823 | /* now iterate over everything, in case we missed something */ |
|
|
1824 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
1825 | #endif |
|
|
1826 | } |
|
|
1827 | |
|
|
1828 | postfork = 0; |
|
|
1829 | } |
|
|
1830 | |
|
|
1831 | #if EV_MULTIPLICITY |
|
|
1832 | |
|
|
1833 | struct ev_loop * |
|
|
1834 | ev_loop_new (unsigned int flags) |
|
|
1835 | { |
|
|
1836 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1837 | |
|
|
1838 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
1839 | loop_init (EV_A_ flags); |
|
|
1840 | |
|
|
1841 | if (ev_backend (EV_A)) |
|
|
1842 | return EV_A; |
|
|
1843 | |
|
|
1844 | return 0; |
|
|
1845 | } |
|
|
1846 | |
|
|
1847 | void |
|
|
1848 | ev_loop_destroy (EV_P) |
|
|
1849 | { |
|
|
1850 | loop_destroy (EV_A); |
|
|
1851 | ev_free (loop); |
|
|
1852 | } |
|
|
1853 | |
|
|
1854 | void |
|
|
1855 | ev_loop_fork (EV_P) |
|
|
1856 | { |
|
|
1857 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1858 | } |
|
|
1859 | #endif /* multiplicity */ |
|
|
1860 | |
|
|
1861 | #if EV_VERIFY |
|
|
1862 | static void noinline |
|
|
1863 | verify_watcher (EV_P_ W w) |
|
|
1864 | { |
|
|
1865 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1866 | |
|
|
1867 | if (w->pending) |
|
|
1868 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1869 | } |
|
|
1870 | |
|
|
1871 | static void noinline |
|
|
1872 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1873 | { |
|
|
1874 | int i; |
|
|
1875 | |
|
|
1876 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1877 | { |
|
|
1878 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1879 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1880 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1881 | |
|
|
1882 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1883 | } |
|
|
1884 | } |
|
|
1885 | |
|
|
1886 | static void noinline |
|
|
1887 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1888 | { |
|
|
1889 | while (cnt--) |
|
|
1890 | { |
|
|
1891 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1892 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1893 | } |
|
|
1894 | } |
|
|
1895 | #endif |
|
|
1896 | |
|
|
1897 | #if EV_FEATURE_API |
|
|
1898 | void |
|
|
1899 | ev_verify (EV_P) |
|
|
1900 | { |
|
|
1901 | #if EV_VERIFY |
|
|
1902 | int i; |
|
|
1903 | WL w; |
|
|
1904 | |
|
|
1905 | assert (activecnt >= -1); |
|
|
1906 | |
|
|
1907 | assert (fdchangemax >= fdchangecnt); |
|
|
1908 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1909 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1910 | |
|
|
1911 | assert (anfdmax >= 0); |
|
|
1912 | for (i = 0; i < anfdmax; ++i) |
|
|
1913 | for (w = anfds [i].head; w; w = w->next) |
742 | { |
1914 | { |
743 | struct timespec ts; |
1915 | verify_watcher (EV_A_ (W)w); |
744 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1916 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
745 | have_monotonic = 1; |
1917 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
746 | } |
1918 | } |
747 | #endif |
|
|
748 | |
1919 | |
749 | ev_rt_now = ev_time (); |
1920 | assert (timermax >= timercnt); |
750 | mn_now = get_clock (); |
1921 | verify_heap (EV_A_ timers, timercnt); |
751 | now_floor = mn_now; |
|
|
752 | rtmn_diff = ev_rt_now - mn_now; |
|
|
753 | |
1922 | |
754 | if (methods == EVMETHOD_AUTO) |
1923 | #if EV_PERIODIC_ENABLE |
755 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
1924 | assert (periodicmax >= periodiccnt); |
756 | methods = atoi (getenv ("LIBEV_METHODS")); |
1925 | verify_heap (EV_A_ periodics, periodiccnt); |
757 | else |
|
|
758 | methods = EVMETHOD_ANY; |
|
|
759 | |
|
|
760 | method = 0; |
|
|
761 | #if EV_USE_WIN32 |
|
|
762 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
763 | #endif |
|
|
764 | #if EV_USE_KQUEUE |
|
|
765 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
766 | #endif |
|
|
767 | #if EV_USE_EPOLL |
|
|
768 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
769 | #endif |
|
|
770 | #if EV_USE_POLL |
|
|
771 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
772 | #endif |
|
|
773 | #if EV_USE_SELECT |
|
|
774 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
775 | #endif |
|
|
776 | |
|
|
777 | ev_init (&sigev, sigcb); |
|
|
778 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
779 | } |
|
|
780 | } |
|
|
781 | |
|
|
782 | void |
|
|
783 | loop_destroy (EV_P) |
|
|
784 | { |
|
|
785 | int i; |
|
|
786 | |
|
|
787 | #if EV_USE_WIN32 |
|
|
788 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
789 | #endif |
|
|
790 | #if EV_USE_KQUEUE |
|
|
791 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
792 | #endif |
|
|
793 | #if EV_USE_EPOLL |
|
|
794 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
795 | #endif |
|
|
796 | #if EV_USE_POLL |
|
|
797 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
798 | #endif |
|
|
799 | #if EV_USE_SELECT |
|
|
800 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
801 | #endif |
1926 | #endif |
802 | |
1927 | |
803 | for (i = NUMPRI; i--; ) |
1928 | for (i = NUMPRI; i--; ) |
804 | array_free (pending, [i]); |
1929 | { |
|
|
1930 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1931 | #if EV_IDLE_ENABLE |
|
|
1932 | assert (idleall >= 0); |
|
|
1933 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1934 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1935 | #endif |
|
|
1936 | } |
805 | |
1937 | |
806 | /* have to use the microsoft-never-gets-it-right macro */ |
1938 | #if EV_FORK_ENABLE |
807 | array_free_microshit (fdchange); |
1939 | assert (forkmax >= forkcnt); |
808 | array_free_microshit (timer); |
1940 | array_verify (EV_A_ (W *)forks, forkcnt); |
809 | array_free_microshit (periodic); |
1941 | #endif |
810 | array_free_microshit (idle); |
|
|
811 | array_free_microshit (prepare); |
|
|
812 | array_free_microshit (check); |
|
|
813 | |
1942 | |
814 | method = 0; |
1943 | #if EV_ASYNC_ENABLE |
815 | } |
1944 | assert (asyncmax >= asynccnt); |
|
|
1945 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1946 | #endif |
816 | |
1947 | |
817 | static void |
1948 | #if EV_PREPARE_ENABLE |
818 | loop_fork (EV_P) |
1949 | assert (preparemax >= preparecnt); |
819 | { |
1950 | array_verify (EV_A_ (W *)prepares, preparecnt); |
820 | #if EV_USE_EPOLL |
1951 | #endif |
821 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
1952 | |
|
|
1953 | #if EV_CHECK_ENABLE |
|
|
1954 | assert (checkmax >= checkcnt); |
|
|
1955 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1956 | #endif |
|
|
1957 | |
|
|
1958 | # if 0 |
|
|
1959 | #if EV_CHILD_ENABLE |
|
|
1960 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1961 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
1962 | #endif |
822 | #endif |
1963 | # endif |
823 | #if EV_USE_KQUEUE |
|
|
824 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
825 | #endif |
1964 | #endif |
826 | |
|
|
827 | if (ev_is_active (&sigev)) |
|
|
828 | { |
|
|
829 | /* default loop */ |
|
|
830 | |
|
|
831 | ev_ref (EV_A); |
|
|
832 | ev_io_stop (EV_A_ &sigev); |
|
|
833 | close (sigpipe [0]); |
|
|
834 | close (sigpipe [1]); |
|
|
835 | |
|
|
836 | while (pipe (sigpipe)) |
|
|
837 | syserr ("(libev) error creating pipe"); |
|
|
838 | |
|
|
839 | siginit (EV_A); |
|
|
840 | } |
|
|
841 | |
|
|
842 | postfork = 0; |
|
|
843 | } |
1965 | } |
|
|
1966 | #endif |
844 | |
1967 | |
845 | #if EV_MULTIPLICITY |
1968 | #if EV_MULTIPLICITY |
846 | struct ev_loop * |
1969 | struct ev_loop * |
847 | ev_loop_new (int methods) |
1970 | ev_default_loop_init (unsigned int flags) |
848 | { |
|
|
849 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
850 | |
|
|
851 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
852 | |
|
|
853 | loop_init (EV_A_ methods); |
|
|
854 | |
|
|
855 | if (ev_method (EV_A)) |
|
|
856 | return loop; |
|
|
857 | |
|
|
858 | return 0; |
|
|
859 | } |
|
|
860 | |
|
|
861 | void |
|
|
862 | ev_loop_destroy (EV_P) |
|
|
863 | { |
|
|
864 | loop_destroy (EV_A); |
|
|
865 | ev_free (loop); |
|
|
866 | } |
|
|
867 | |
|
|
868 | void |
|
|
869 | ev_loop_fork (EV_P) |
|
|
870 | { |
|
|
871 | postfork = 1; |
|
|
872 | } |
|
|
873 | |
|
|
874 | #endif |
|
|
875 | |
|
|
876 | #if EV_MULTIPLICITY |
|
|
877 | struct ev_loop * |
|
|
878 | #else |
1971 | #else |
879 | int |
1972 | int |
|
|
1973 | ev_default_loop (unsigned int flags) |
880 | #endif |
1974 | #endif |
881 | ev_default_loop (int methods) |
|
|
882 | { |
1975 | { |
883 | if (sigpipe [0] == sigpipe [1]) |
|
|
884 | if (pipe (sigpipe)) |
|
|
885 | return 0; |
|
|
886 | |
|
|
887 | if (!default_loop) |
1976 | if (!ev_default_loop_ptr) |
888 | { |
1977 | { |
889 | #if EV_MULTIPLICITY |
1978 | #if EV_MULTIPLICITY |
890 | struct ev_loop *loop = default_loop = &default_loop_struct; |
1979 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
891 | #else |
1980 | #else |
892 | default_loop = 1; |
1981 | ev_default_loop_ptr = 1; |
893 | #endif |
1982 | #endif |
894 | |
1983 | |
895 | loop_init (EV_A_ methods); |
1984 | loop_init (EV_A_ flags); |
896 | |
1985 | |
897 | if (ev_method (EV_A)) |
1986 | if (ev_backend (EV_A)) |
898 | { |
1987 | { |
899 | siginit (EV_A); |
1988 | #if EV_CHILD_ENABLE |
900 | |
|
|
901 | #ifndef WIN32 |
|
|
902 | ev_signal_init (&childev, childcb, SIGCHLD); |
1989 | ev_signal_init (&childev, childcb, SIGCHLD); |
903 | ev_set_priority (&childev, EV_MAXPRI); |
1990 | ev_set_priority (&childev, EV_MAXPRI); |
904 | ev_signal_start (EV_A_ &childev); |
1991 | ev_signal_start (EV_A_ &childev); |
905 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1992 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
906 | #endif |
1993 | #endif |
907 | } |
1994 | } |
908 | else |
1995 | else |
909 | default_loop = 0; |
1996 | ev_default_loop_ptr = 0; |
910 | } |
1997 | } |
911 | |
1998 | |
912 | return default_loop; |
1999 | return ev_default_loop_ptr; |
913 | } |
2000 | } |
914 | |
2001 | |
915 | void |
2002 | void |
916 | ev_default_destroy (void) |
2003 | ev_default_destroy (void) |
917 | { |
2004 | { |
918 | #if EV_MULTIPLICITY |
2005 | #if EV_MULTIPLICITY |
919 | struct ev_loop *loop = default_loop; |
2006 | EV_P = ev_default_loop_ptr; |
920 | #endif |
2007 | #endif |
921 | |
2008 | |
922 | #ifndef WIN32 |
2009 | ev_default_loop_ptr = 0; |
|
|
2010 | |
|
|
2011 | #if EV_CHILD_ENABLE |
923 | ev_ref (EV_A); /* child watcher */ |
2012 | ev_ref (EV_A); /* child watcher */ |
924 | ev_signal_stop (EV_A_ &childev); |
2013 | ev_signal_stop (EV_A_ &childev); |
925 | #endif |
2014 | #endif |
926 | |
2015 | |
927 | ev_ref (EV_A); /* signal watcher */ |
|
|
928 | ev_io_stop (EV_A_ &sigev); |
|
|
929 | |
|
|
930 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
931 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
932 | |
|
|
933 | loop_destroy (EV_A); |
2016 | loop_destroy (EV_A); |
934 | } |
2017 | } |
935 | |
2018 | |
936 | void |
2019 | void |
937 | ev_default_fork (void) |
2020 | ev_default_fork (void) |
938 | { |
2021 | { |
939 | #if EV_MULTIPLICITY |
2022 | #if EV_MULTIPLICITY |
940 | struct ev_loop *loop = default_loop; |
2023 | EV_P = ev_default_loop_ptr; |
941 | #endif |
2024 | #endif |
942 | |
2025 | |
943 | if (method) |
2026 | postfork = 1; /* must be in line with ev_loop_fork */ |
944 | postfork = 1; |
|
|
945 | } |
2027 | } |
946 | |
2028 | |
947 | /*****************************************************************************/ |
2029 | /*****************************************************************************/ |
948 | |
2030 | |
949 | static int |
2031 | void |
950 | any_pending (EV_P) |
2032 | ev_invoke (EV_P_ void *w, int revents) |
|
|
2033 | { |
|
|
2034 | EV_CB_INVOKE ((W)w, revents); |
|
|
2035 | } |
|
|
2036 | |
|
|
2037 | unsigned int |
|
|
2038 | ev_pending_count (EV_P) |
951 | { |
2039 | { |
952 | int pri; |
2040 | int pri; |
|
|
2041 | unsigned int count = 0; |
953 | |
2042 | |
954 | for (pri = NUMPRI; pri--; ) |
2043 | for (pri = NUMPRI; pri--; ) |
955 | if (pendingcnt [pri]) |
2044 | count += pendingcnt [pri]; |
956 | return 1; |
|
|
957 | |
2045 | |
958 | return 0; |
2046 | return count; |
959 | } |
2047 | } |
960 | |
2048 | |
961 | static void |
2049 | void noinline |
962 | call_pending (EV_P) |
2050 | ev_invoke_pending (EV_P) |
963 | { |
2051 | { |
964 | int pri; |
2052 | int pri; |
965 | |
2053 | |
966 | for (pri = NUMPRI; pri--; ) |
2054 | for (pri = NUMPRI; pri--; ) |
967 | while (pendingcnt [pri]) |
2055 | while (pendingcnt [pri]) |
968 | { |
2056 | { |
969 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2057 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
970 | |
2058 | |
971 | if (p->w) |
2059 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
972 | { |
2060 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2061 | |
973 | p->w->pending = 0; |
2062 | p->w->pending = 0; |
974 | EV_CB_INVOKE (p->w, p->events); |
2063 | EV_CB_INVOKE (p->w, p->events); |
975 | } |
2064 | EV_FREQUENT_CHECK; |
976 | } |
2065 | } |
977 | } |
2066 | } |
978 | |
2067 | |
979 | static void |
2068 | #if EV_IDLE_ENABLE |
|
|
2069 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
2070 | /* only when higher priorities are idle" logic */ |
|
|
2071 | inline_size void |
|
|
2072 | idle_reify (EV_P) |
|
|
2073 | { |
|
|
2074 | if (expect_false (idleall)) |
|
|
2075 | { |
|
|
2076 | int pri; |
|
|
2077 | |
|
|
2078 | for (pri = NUMPRI; pri--; ) |
|
|
2079 | { |
|
|
2080 | if (pendingcnt [pri]) |
|
|
2081 | break; |
|
|
2082 | |
|
|
2083 | if (idlecnt [pri]) |
|
|
2084 | { |
|
|
2085 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
2086 | break; |
|
|
2087 | } |
|
|
2088 | } |
|
|
2089 | } |
|
|
2090 | } |
|
|
2091 | #endif |
|
|
2092 | |
|
|
2093 | /* make timers pending */ |
|
|
2094 | inline_size void |
980 | timers_reify (EV_P) |
2095 | timers_reify (EV_P) |
981 | { |
2096 | { |
|
|
2097 | EV_FREQUENT_CHECK; |
|
|
2098 | |
982 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
2099 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
983 | { |
2100 | { |
984 | struct ev_timer *w = timers [0]; |
2101 | do |
985 | |
|
|
986 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
987 | |
|
|
988 | /* first reschedule or stop timer */ |
|
|
989 | if (w->repeat) |
|
|
990 | { |
2102 | { |
|
|
2103 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2104 | |
|
|
2105 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2106 | |
|
|
2107 | /* first reschedule or stop timer */ |
|
|
2108 | if (w->repeat) |
|
|
2109 | { |
|
|
2110 | ev_at (w) += w->repeat; |
|
|
2111 | if (ev_at (w) < mn_now) |
|
|
2112 | ev_at (w) = mn_now; |
|
|
2113 | |
991 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2114 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
992 | |
2115 | |
993 | ((WT)w)->at += w->repeat; |
2116 | ANHE_at_cache (timers [HEAP0]); |
994 | if (((WT)w)->at < mn_now) |
|
|
995 | ((WT)w)->at = mn_now; |
|
|
996 | |
|
|
997 | downheap ((WT *)timers, timercnt, 0); |
2117 | downheap (timers, timercnt, HEAP0); |
|
|
2118 | } |
|
|
2119 | else |
|
|
2120 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2121 | |
|
|
2122 | EV_FREQUENT_CHECK; |
|
|
2123 | feed_reverse (EV_A_ (W)w); |
998 | } |
2124 | } |
999 | else |
2125 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
1000 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1001 | |
2126 | |
1002 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
2127 | feed_reverse_done (EV_A_ EV_TIMER); |
1003 | } |
2128 | } |
1004 | } |
2129 | } |
1005 | |
2130 | |
1006 | static void |
2131 | #if EV_PERIODIC_ENABLE |
|
|
2132 | /* make periodics pending */ |
|
|
2133 | inline_size void |
1007 | periodics_reify (EV_P) |
2134 | periodics_reify (EV_P) |
1008 | { |
2135 | { |
|
|
2136 | EV_FREQUENT_CHECK; |
|
|
2137 | |
1009 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
2138 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1010 | { |
2139 | { |
1011 | struct ev_periodic *w = periodics [0]; |
2140 | int feed_count = 0; |
1012 | |
2141 | |
|
|
2142 | do |
|
|
2143 | { |
|
|
2144 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2145 | |
1013 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
2146 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1014 | |
2147 | |
1015 | /* first reschedule or stop timer */ |
2148 | /* first reschedule or stop timer */ |
|
|
2149 | if (w->reschedule_cb) |
|
|
2150 | { |
|
|
2151 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2152 | |
|
|
2153 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2154 | |
|
|
2155 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2156 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2157 | } |
|
|
2158 | else if (w->interval) |
|
|
2159 | { |
|
|
2160 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2161 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2162 | /* this might happen because of floating point inexactness */ |
|
|
2163 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2164 | { |
|
|
2165 | ev_at (w) += w->interval; |
|
|
2166 | |
|
|
2167 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2168 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2169 | /* has effectively asked to get triggered more often than possible */ |
|
|
2170 | if (ev_at (w) < ev_rt_now) |
|
|
2171 | ev_at (w) = ev_rt_now; |
|
|
2172 | } |
|
|
2173 | |
|
|
2174 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2175 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2176 | } |
|
|
2177 | else |
|
|
2178 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2179 | |
|
|
2180 | EV_FREQUENT_CHECK; |
|
|
2181 | feed_reverse (EV_A_ (W)w); |
|
|
2182 | } |
|
|
2183 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2184 | |
|
|
2185 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2186 | } |
|
|
2187 | } |
|
|
2188 | |
|
|
2189 | /* simply recalculate all periodics */ |
|
|
2190 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
2191 | static void noinline |
|
|
2192 | periodics_reschedule (EV_P) |
|
|
2193 | { |
|
|
2194 | int i; |
|
|
2195 | |
|
|
2196 | /* adjust periodics after time jump */ |
|
|
2197 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2198 | { |
|
|
2199 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2200 | |
1016 | if (w->reschedule_cb) |
2201 | if (w->reschedule_cb) |
|
|
2202 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2203 | else if (w->interval) |
|
|
2204 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2205 | |
|
|
2206 | ANHE_at_cache (periodics [i]); |
|
|
2207 | } |
|
|
2208 | |
|
|
2209 | reheap (periodics, periodiccnt); |
|
|
2210 | } |
|
|
2211 | #endif |
|
|
2212 | |
|
|
2213 | /* adjust all timers by a given offset */ |
|
|
2214 | static void noinline |
|
|
2215 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2216 | { |
|
|
2217 | int i; |
|
|
2218 | |
|
|
2219 | for (i = 0; i < timercnt; ++i) |
|
|
2220 | { |
|
|
2221 | ANHE *he = timers + i + HEAP0; |
|
|
2222 | ANHE_w (*he)->at += adjust; |
|
|
2223 | ANHE_at_cache (*he); |
|
|
2224 | } |
|
|
2225 | } |
|
|
2226 | |
|
|
2227 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2228 | /* also detect if there was a timejump, and act accordingly */ |
|
|
2229 | inline_speed void |
|
|
2230 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2231 | { |
|
|
2232 | #if EV_USE_MONOTONIC |
|
|
2233 | if (expect_true (have_monotonic)) |
|
|
2234 | { |
|
|
2235 | int i; |
|
|
2236 | ev_tstamp odiff = rtmn_diff; |
|
|
2237 | |
|
|
2238 | mn_now = get_clock (); |
|
|
2239 | |
|
|
2240 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2241 | /* interpolate in the meantime */ |
|
|
2242 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1017 | { |
2243 | { |
1018 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
2244 | ev_rt_now = rtmn_diff + mn_now; |
1019 | |
2245 | return; |
1020 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1021 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1022 | } |
2246 | } |
1023 | else if (w->interval) |
|
|
1024 | { |
|
|
1025 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1026 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1027 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1028 | } |
|
|
1029 | else |
|
|
1030 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1031 | |
2247 | |
1032 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1033 | } |
|
|
1034 | } |
|
|
1035 | |
|
|
1036 | static void |
|
|
1037 | periodics_reschedule (EV_P) |
|
|
1038 | { |
|
|
1039 | int i; |
|
|
1040 | |
|
|
1041 | /* adjust periodics after time jump */ |
|
|
1042 | for (i = 0; i < periodiccnt; ++i) |
|
|
1043 | { |
|
|
1044 | struct ev_periodic *w = periodics [i]; |
|
|
1045 | |
|
|
1046 | if (w->reschedule_cb) |
|
|
1047 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1048 | else if (w->interval) |
|
|
1049 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1050 | } |
|
|
1051 | |
|
|
1052 | /* now rebuild the heap */ |
|
|
1053 | for (i = periodiccnt >> 1; i--; ) |
|
|
1054 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1055 | } |
|
|
1056 | |
|
|
1057 | inline int |
|
|
1058 | time_update_monotonic (EV_P) |
|
|
1059 | { |
|
|
1060 | mn_now = get_clock (); |
|
|
1061 | |
|
|
1062 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1063 | { |
|
|
1064 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1065 | return 0; |
|
|
1066 | } |
|
|
1067 | else |
|
|
1068 | { |
|
|
1069 | now_floor = mn_now; |
2248 | now_floor = mn_now; |
1070 | ev_rt_now = ev_time (); |
2249 | ev_rt_now = ev_time (); |
1071 | return 1; |
|
|
1072 | } |
|
|
1073 | } |
|
|
1074 | |
2250 | |
1075 | static void |
2251 | /* loop a few times, before making important decisions. |
1076 | time_update (EV_P) |
2252 | * on the choice of "4": one iteration isn't enough, |
1077 | { |
2253 | * in case we get preempted during the calls to |
1078 | int i; |
2254 | * ev_time and get_clock. a second call is almost guaranteed |
1079 | |
2255 | * to succeed in that case, though. and looping a few more times |
1080 | #if EV_USE_MONOTONIC |
2256 | * doesn't hurt either as we only do this on time-jumps or |
1081 | if (expect_true (have_monotonic)) |
2257 | * in the unlikely event of having been preempted here. |
1082 | { |
2258 | */ |
1083 | if (time_update_monotonic (EV_A)) |
2259 | for (i = 4; --i; ) |
1084 | { |
2260 | { |
1085 | ev_tstamp odiff = rtmn_diff; |
|
|
1086 | |
|
|
1087 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1088 | { |
|
|
1089 | rtmn_diff = ev_rt_now - mn_now; |
2261 | rtmn_diff = ev_rt_now - mn_now; |
1090 | |
2262 | |
1091 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
2263 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1092 | return; /* all is well */ |
2264 | return; /* all is well */ |
1093 | |
2265 | |
1094 | ev_rt_now = ev_time (); |
2266 | ev_rt_now = ev_time (); |
1095 | mn_now = get_clock (); |
2267 | mn_now = get_clock (); |
1096 | now_floor = mn_now; |
2268 | now_floor = mn_now; |
1097 | } |
2269 | } |
1098 | |
2270 | |
|
|
2271 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2272 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2273 | # if EV_PERIODIC_ENABLE |
|
|
2274 | periodics_reschedule (EV_A); |
|
|
2275 | # endif |
|
|
2276 | } |
|
|
2277 | else |
|
|
2278 | #endif |
|
|
2279 | { |
|
|
2280 | ev_rt_now = ev_time (); |
|
|
2281 | |
|
|
2282 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
2283 | { |
|
|
2284 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
2285 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
2286 | #if EV_PERIODIC_ENABLE |
1099 | periodics_reschedule (EV_A); |
2287 | periodics_reschedule (EV_A); |
1100 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
2288 | #endif |
1101 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1102 | } |
2289 | } |
1103 | } |
|
|
1104 | else |
|
|
1105 | #endif |
|
|
1106 | { |
|
|
1107 | ev_rt_now = ev_time (); |
|
|
1108 | |
|
|
1109 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1110 | { |
|
|
1111 | periodics_reschedule (EV_A); |
|
|
1112 | |
|
|
1113 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1114 | for (i = 0; i < timercnt; ++i) |
|
|
1115 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1116 | } |
|
|
1117 | |
2290 | |
1118 | mn_now = ev_rt_now; |
2291 | mn_now = ev_rt_now; |
1119 | } |
2292 | } |
1120 | } |
2293 | } |
1121 | |
2294 | |
1122 | void |
2295 | void |
1123 | ev_ref (EV_P) |
|
|
1124 | { |
|
|
1125 | ++activecnt; |
|
|
1126 | } |
|
|
1127 | |
|
|
1128 | void |
|
|
1129 | ev_unref (EV_P) |
|
|
1130 | { |
|
|
1131 | --activecnt; |
|
|
1132 | } |
|
|
1133 | |
|
|
1134 | static int loop_done; |
|
|
1135 | |
|
|
1136 | void |
|
|
1137 | ev_loop (EV_P_ int flags) |
2296 | ev_loop (EV_P_ int flags) |
1138 | { |
2297 | { |
1139 | double block; |
2298 | #if EV_FEATURE_API |
1140 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
2299 | ++loop_depth; |
|
|
2300 | #endif |
|
|
2301 | |
|
|
2302 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
|
|
2303 | |
|
|
2304 | loop_done = EVUNLOOP_CANCEL; |
|
|
2305 | |
|
|
2306 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
1141 | |
2307 | |
1142 | do |
2308 | do |
1143 | { |
2309 | { |
|
|
2310 | #if EV_VERIFY >= 2 |
|
|
2311 | ev_verify (EV_A); |
|
|
2312 | #endif |
|
|
2313 | |
|
|
2314 | #ifndef _WIN32 |
|
|
2315 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2316 | if (expect_false (getpid () != curpid)) |
|
|
2317 | { |
|
|
2318 | curpid = getpid (); |
|
|
2319 | postfork = 1; |
|
|
2320 | } |
|
|
2321 | #endif |
|
|
2322 | |
|
|
2323 | #if EV_FORK_ENABLE |
|
|
2324 | /* we might have forked, so queue fork handlers */ |
|
|
2325 | if (expect_false (postfork)) |
|
|
2326 | if (forkcnt) |
|
|
2327 | { |
|
|
2328 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2329 | EV_INVOKE_PENDING; |
|
|
2330 | } |
|
|
2331 | #endif |
|
|
2332 | |
|
|
2333 | #if EV_PREPARE_ENABLE |
1144 | /* queue check watchers (and execute them) */ |
2334 | /* queue prepare watchers (and execute them) */ |
1145 | if (expect_false (preparecnt)) |
2335 | if (expect_false (preparecnt)) |
1146 | { |
2336 | { |
1147 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2337 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1148 | call_pending (EV_A); |
2338 | EV_INVOKE_PENDING; |
1149 | } |
2339 | } |
|
|
2340 | #endif |
|
|
2341 | |
|
|
2342 | if (expect_false (loop_done)) |
|
|
2343 | break; |
1150 | |
2344 | |
1151 | /* we might have forked, so reify kernel state if necessary */ |
2345 | /* we might have forked, so reify kernel state if necessary */ |
1152 | if (expect_false (postfork)) |
2346 | if (expect_false (postfork)) |
1153 | loop_fork (EV_A); |
2347 | loop_fork (EV_A); |
1154 | |
2348 | |
1155 | /* update fd-related kernel structures */ |
2349 | /* update fd-related kernel structures */ |
1156 | fd_reify (EV_A); |
2350 | fd_reify (EV_A); |
1157 | |
2351 | |
1158 | /* calculate blocking time */ |
2352 | /* calculate blocking time */ |
|
|
2353 | { |
|
|
2354 | ev_tstamp waittime = 0.; |
|
|
2355 | ev_tstamp sleeptime = 0.; |
1159 | |
2356 | |
1160 | /* we only need this for !monotonic clock or timers, but as we basically |
2357 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1161 | always have timers, we just calculate it always */ |
|
|
1162 | #if EV_USE_MONOTONIC |
|
|
1163 | if (expect_true (have_monotonic)) |
|
|
1164 | time_update_monotonic (EV_A); |
|
|
1165 | else |
|
|
1166 | #endif |
|
|
1167 | { |
2358 | { |
1168 | ev_rt_now = ev_time (); |
2359 | /* remember old timestamp for io_blocktime calculation */ |
1169 | mn_now = ev_rt_now; |
2360 | ev_tstamp prev_mn_now = mn_now; |
1170 | } |
|
|
1171 | |
2361 | |
1172 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
2362 | /* update time to cancel out callback processing overhead */ |
1173 | block = 0.; |
2363 | time_update (EV_A_ 1e100); |
1174 | else |
2364 | |
1175 | { |
|
|
1176 | block = MAX_BLOCKTIME; |
2365 | waittime = MAX_BLOCKTIME; |
1177 | |
2366 | |
1178 | if (timercnt) |
2367 | if (timercnt) |
1179 | { |
2368 | { |
1180 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
2369 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1181 | if (block > to) block = to; |
2370 | if (waittime > to) waittime = to; |
1182 | } |
2371 | } |
1183 | |
2372 | |
|
|
2373 | #if EV_PERIODIC_ENABLE |
1184 | if (periodiccnt) |
2374 | if (periodiccnt) |
1185 | { |
2375 | { |
1186 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
2376 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1187 | if (block > to) block = to; |
2377 | if (waittime > to) waittime = to; |
1188 | } |
2378 | } |
|
|
2379 | #endif |
1189 | |
2380 | |
1190 | if (block < 0.) block = 0.; |
2381 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2382 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2383 | waittime = timeout_blocktime; |
|
|
2384 | |
|
|
2385 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2386 | if (expect_false (io_blocktime)) |
|
|
2387 | { |
|
|
2388 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2389 | |
|
|
2390 | if (sleeptime > waittime - backend_fudge) |
|
|
2391 | sleeptime = waittime - backend_fudge; |
|
|
2392 | |
|
|
2393 | if (expect_true (sleeptime > 0.)) |
|
|
2394 | { |
|
|
2395 | ev_sleep (sleeptime); |
|
|
2396 | waittime -= sleeptime; |
|
|
2397 | } |
|
|
2398 | } |
1191 | } |
2399 | } |
1192 | |
2400 | |
1193 | method_poll (EV_A_ block); |
2401 | #if EV_FEATURE_API |
|
|
2402 | ++loop_count; |
|
|
2403 | #endif |
|
|
2404 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
|
|
2405 | backend_poll (EV_A_ waittime); |
|
|
2406 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
1194 | |
2407 | |
1195 | /* update ev_rt_now, do magic */ |
2408 | /* update ev_rt_now, do magic */ |
1196 | time_update (EV_A); |
2409 | time_update (EV_A_ waittime + sleeptime); |
|
|
2410 | } |
1197 | |
2411 | |
1198 | /* queue pending timers and reschedule them */ |
2412 | /* queue pending timers and reschedule them */ |
1199 | timers_reify (EV_A); /* relative timers called last */ |
2413 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2414 | #if EV_PERIODIC_ENABLE |
1200 | periodics_reify (EV_A); /* absolute timers called first */ |
2415 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2416 | #endif |
1201 | |
2417 | |
|
|
2418 | #if EV_IDLE_ENABLE |
1202 | /* queue idle watchers unless io or timers are pending */ |
2419 | /* queue idle watchers unless other events are pending */ |
1203 | if (idlecnt && !any_pending (EV_A)) |
2420 | idle_reify (EV_A); |
1204 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
2421 | #endif |
1205 | |
2422 | |
|
|
2423 | #if EV_CHECK_ENABLE |
1206 | /* queue check watchers, to be executed first */ |
2424 | /* queue check watchers, to be executed first */ |
1207 | if (checkcnt) |
2425 | if (expect_false (checkcnt)) |
1208 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2426 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
2427 | #endif |
1209 | |
2428 | |
1210 | call_pending (EV_A); |
2429 | EV_INVOKE_PENDING; |
1211 | } |
2430 | } |
1212 | while (activecnt && !loop_done); |
2431 | while (expect_true ( |
|
|
2432 | activecnt |
|
|
2433 | && !loop_done |
|
|
2434 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2435 | )); |
1213 | |
2436 | |
1214 | if (loop_done != 2) |
2437 | if (loop_done == EVUNLOOP_ONE) |
1215 | loop_done = 0; |
2438 | loop_done = EVUNLOOP_CANCEL; |
|
|
2439 | |
|
|
2440 | #if EV_FEATURE_API |
|
|
2441 | --loop_depth; |
|
|
2442 | #endif |
1216 | } |
2443 | } |
1217 | |
2444 | |
1218 | void |
2445 | void |
1219 | ev_unloop (EV_P_ int how) |
2446 | ev_unloop (EV_P_ int how) |
1220 | { |
2447 | { |
1221 | loop_done = how; |
2448 | loop_done = how; |
1222 | } |
2449 | } |
1223 | |
2450 | |
|
|
2451 | void |
|
|
2452 | ev_ref (EV_P) |
|
|
2453 | { |
|
|
2454 | ++activecnt; |
|
|
2455 | } |
|
|
2456 | |
|
|
2457 | void |
|
|
2458 | ev_unref (EV_P) |
|
|
2459 | { |
|
|
2460 | --activecnt; |
|
|
2461 | } |
|
|
2462 | |
|
|
2463 | void |
|
|
2464 | ev_now_update (EV_P) |
|
|
2465 | { |
|
|
2466 | time_update (EV_A_ 1e100); |
|
|
2467 | } |
|
|
2468 | |
|
|
2469 | void |
|
|
2470 | ev_suspend (EV_P) |
|
|
2471 | { |
|
|
2472 | ev_now_update (EV_A); |
|
|
2473 | } |
|
|
2474 | |
|
|
2475 | void |
|
|
2476 | ev_resume (EV_P) |
|
|
2477 | { |
|
|
2478 | ev_tstamp mn_prev = mn_now; |
|
|
2479 | |
|
|
2480 | ev_now_update (EV_A); |
|
|
2481 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2482 | #if EV_PERIODIC_ENABLE |
|
|
2483 | /* TODO: really do this? */ |
|
|
2484 | periodics_reschedule (EV_A); |
|
|
2485 | #endif |
|
|
2486 | } |
|
|
2487 | |
1224 | /*****************************************************************************/ |
2488 | /*****************************************************************************/ |
|
|
2489 | /* singly-linked list management, used when the expected list length is short */ |
1225 | |
2490 | |
1226 | inline void |
2491 | inline_size void |
1227 | wlist_add (WL *head, WL elem) |
2492 | wlist_add (WL *head, WL elem) |
1228 | { |
2493 | { |
1229 | elem->next = *head; |
2494 | elem->next = *head; |
1230 | *head = elem; |
2495 | *head = elem; |
1231 | } |
2496 | } |
1232 | |
2497 | |
1233 | inline void |
2498 | inline_size void |
1234 | wlist_del (WL *head, WL elem) |
2499 | wlist_del (WL *head, WL elem) |
1235 | { |
2500 | { |
1236 | while (*head) |
2501 | while (*head) |
1237 | { |
2502 | { |
1238 | if (*head == elem) |
2503 | if (expect_true (*head == elem)) |
1239 | { |
2504 | { |
1240 | *head = elem->next; |
2505 | *head = elem->next; |
1241 | return; |
2506 | break; |
1242 | } |
2507 | } |
1243 | |
2508 | |
1244 | head = &(*head)->next; |
2509 | head = &(*head)->next; |
1245 | } |
2510 | } |
1246 | } |
2511 | } |
1247 | |
2512 | |
|
|
2513 | /* internal, faster, version of ev_clear_pending */ |
1248 | inline void |
2514 | inline_speed void |
1249 | ev_clear_pending (EV_P_ W w) |
2515 | clear_pending (EV_P_ W w) |
1250 | { |
2516 | { |
1251 | if (w->pending) |
2517 | if (w->pending) |
1252 | { |
2518 | { |
1253 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
2519 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1254 | w->pending = 0; |
2520 | w->pending = 0; |
1255 | } |
2521 | } |
1256 | } |
2522 | } |
1257 | |
2523 | |
|
|
2524 | int |
|
|
2525 | ev_clear_pending (EV_P_ void *w) |
|
|
2526 | { |
|
|
2527 | W w_ = (W)w; |
|
|
2528 | int pending = w_->pending; |
|
|
2529 | |
|
|
2530 | if (expect_true (pending)) |
|
|
2531 | { |
|
|
2532 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2533 | p->w = (W)&pending_w; |
|
|
2534 | w_->pending = 0; |
|
|
2535 | return p->events; |
|
|
2536 | } |
|
|
2537 | else |
|
|
2538 | return 0; |
|
|
2539 | } |
|
|
2540 | |
1258 | inline void |
2541 | inline_size void |
|
|
2542 | pri_adjust (EV_P_ W w) |
|
|
2543 | { |
|
|
2544 | int pri = ev_priority (w); |
|
|
2545 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2546 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2547 | ev_set_priority (w, pri); |
|
|
2548 | } |
|
|
2549 | |
|
|
2550 | inline_speed void |
1259 | ev_start (EV_P_ W w, int active) |
2551 | ev_start (EV_P_ W w, int active) |
1260 | { |
2552 | { |
1261 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
2553 | pri_adjust (EV_A_ w); |
1262 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1263 | |
|
|
1264 | w->active = active; |
2554 | w->active = active; |
1265 | ev_ref (EV_A); |
2555 | ev_ref (EV_A); |
1266 | } |
2556 | } |
1267 | |
2557 | |
1268 | inline void |
2558 | inline_size void |
1269 | ev_stop (EV_P_ W w) |
2559 | ev_stop (EV_P_ W w) |
1270 | { |
2560 | { |
1271 | ev_unref (EV_A); |
2561 | ev_unref (EV_A); |
1272 | w->active = 0; |
2562 | w->active = 0; |
1273 | } |
2563 | } |
1274 | |
2564 | |
1275 | /*****************************************************************************/ |
2565 | /*****************************************************************************/ |
1276 | |
2566 | |
1277 | void |
2567 | void noinline |
1278 | ev_io_start (EV_P_ struct ev_io *w) |
2568 | ev_io_start (EV_P_ ev_io *w) |
1279 | { |
2569 | { |
1280 | int fd = w->fd; |
2570 | int fd = w->fd; |
1281 | |
2571 | |
|
|
2572 | if (expect_false (ev_is_active (w))) |
|
|
2573 | return; |
|
|
2574 | |
|
|
2575 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2576 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2577 | |
|
|
2578 | EV_FREQUENT_CHECK; |
|
|
2579 | |
|
|
2580 | ev_start (EV_A_ (W)w, 1); |
|
|
2581 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
|
|
2582 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
2583 | |
|
|
2584 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
2585 | w->events &= ~EV__IOFDSET; |
|
|
2586 | |
|
|
2587 | EV_FREQUENT_CHECK; |
|
|
2588 | } |
|
|
2589 | |
|
|
2590 | void noinline |
|
|
2591 | ev_io_stop (EV_P_ ev_io *w) |
|
|
2592 | { |
|
|
2593 | clear_pending (EV_A_ (W)w); |
|
|
2594 | if (expect_false (!ev_is_active (w))) |
|
|
2595 | return; |
|
|
2596 | |
|
|
2597 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2598 | |
|
|
2599 | EV_FREQUENT_CHECK; |
|
|
2600 | |
|
|
2601 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
2602 | ev_stop (EV_A_ (W)w); |
|
|
2603 | |
|
|
2604 | fd_change (EV_A_ w->fd, 1); |
|
|
2605 | |
|
|
2606 | EV_FREQUENT_CHECK; |
|
|
2607 | } |
|
|
2608 | |
|
|
2609 | void noinline |
|
|
2610 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
2611 | { |
|
|
2612 | if (expect_false (ev_is_active (w))) |
|
|
2613 | return; |
|
|
2614 | |
|
|
2615 | ev_at (w) += mn_now; |
|
|
2616 | |
|
|
2617 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
2618 | |
|
|
2619 | EV_FREQUENT_CHECK; |
|
|
2620 | |
|
|
2621 | ++timercnt; |
|
|
2622 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2623 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2624 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2625 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2626 | upheap (timers, ev_active (w)); |
|
|
2627 | |
|
|
2628 | EV_FREQUENT_CHECK; |
|
|
2629 | |
|
|
2630 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2631 | } |
|
|
2632 | |
|
|
2633 | void noinline |
|
|
2634 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
2635 | { |
|
|
2636 | clear_pending (EV_A_ (W)w); |
|
|
2637 | if (expect_false (!ev_is_active (w))) |
|
|
2638 | return; |
|
|
2639 | |
|
|
2640 | EV_FREQUENT_CHECK; |
|
|
2641 | |
|
|
2642 | { |
|
|
2643 | int active = ev_active (w); |
|
|
2644 | |
|
|
2645 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2646 | |
|
|
2647 | --timercnt; |
|
|
2648 | |
|
|
2649 | if (expect_true (active < timercnt + HEAP0)) |
|
|
2650 | { |
|
|
2651 | timers [active] = timers [timercnt + HEAP0]; |
|
|
2652 | adjustheap (timers, timercnt, active); |
|
|
2653 | } |
|
|
2654 | } |
|
|
2655 | |
|
|
2656 | ev_at (w) -= mn_now; |
|
|
2657 | |
|
|
2658 | ev_stop (EV_A_ (W)w); |
|
|
2659 | |
|
|
2660 | EV_FREQUENT_CHECK; |
|
|
2661 | } |
|
|
2662 | |
|
|
2663 | void noinline |
|
|
2664 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
2665 | { |
|
|
2666 | EV_FREQUENT_CHECK; |
|
|
2667 | |
1282 | if (ev_is_active (w)) |
2668 | if (ev_is_active (w)) |
1283 | return; |
|
|
1284 | |
|
|
1285 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1286 | |
|
|
1287 | ev_start (EV_A_ (W)w, 1); |
|
|
1288 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
1289 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
1290 | |
|
|
1291 | fd_change (EV_A_ fd); |
|
|
1292 | } |
|
|
1293 | |
|
|
1294 | void |
|
|
1295 | ev_io_stop (EV_P_ struct ev_io *w) |
|
|
1296 | { |
|
|
1297 | ev_clear_pending (EV_A_ (W)w); |
|
|
1298 | if (!ev_is_active (w)) |
|
|
1299 | return; |
|
|
1300 | |
|
|
1301 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1302 | |
|
|
1303 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
1304 | ev_stop (EV_A_ (W)w); |
|
|
1305 | |
|
|
1306 | fd_change (EV_A_ w->fd); |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | void |
|
|
1310 | ev_timer_start (EV_P_ struct ev_timer *w) |
|
|
1311 | { |
|
|
1312 | if (ev_is_active (w)) |
|
|
1313 | return; |
|
|
1314 | |
|
|
1315 | ((WT)w)->at += mn_now; |
|
|
1316 | |
|
|
1317 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1318 | |
|
|
1319 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1320 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
|
|
1321 | timers [timercnt - 1] = w; |
|
|
1322 | upheap ((WT *)timers, timercnt - 1); |
|
|
1323 | |
|
|
1324 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | void |
|
|
1328 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1329 | { |
|
|
1330 | ev_clear_pending (EV_A_ (W)w); |
|
|
1331 | if (!ev_is_active (w)) |
|
|
1332 | return; |
|
|
1333 | |
|
|
1334 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1335 | |
|
|
1336 | if (((W)w)->active < timercnt--) |
|
|
1337 | { |
|
|
1338 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1339 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1340 | } |
|
|
1341 | |
|
|
1342 | ((WT)w)->at -= mn_now; |
|
|
1343 | |
|
|
1344 | ev_stop (EV_A_ (W)w); |
|
|
1345 | } |
|
|
1346 | |
|
|
1347 | void |
|
|
1348 | ev_timer_again (EV_P_ struct ev_timer *w) |
|
|
1349 | { |
|
|
1350 | if (ev_is_active (w)) |
|
|
1351 | { |
2669 | { |
1352 | if (w->repeat) |
2670 | if (w->repeat) |
1353 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); |
2671 | { |
|
|
2672 | ev_at (w) = mn_now + w->repeat; |
|
|
2673 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2674 | adjustheap (timers, timercnt, ev_active (w)); |
|
|
2675 | } |
1354 | else |
2676 | else |
1355 | ev_timer_stop (EV_A_ w); |
2677 | ev_timer_stop (EV_A_ w); |
1356 | } |
2678 | } |
1357 | else if (w->repeat) |
2679 | else if (w->repeat) |
|
|
2680 | { |
|
|
2681 | ev_at (w) = w->repeat; |
1358 | ev_timer_start (EV_A_ w); |
2682 | ev_timer_start (EV_A_ w); |
1359 | } |
2683 | } |
1360 | |
2684 | |
1361 | void |
2685 | EV_FREQUENT_CHECK; |
|
|
2686 | } |
|
|
2687 | |
|
|
2688 | ev_tstamp |
|
|
2689 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2690 | { |
|
|
2691 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2692 | } |
|
|
2693 | |
|
|
2694 | #if EV_PERIODIC_ENABLE |
|
|
2695 | void noinline |
1362 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2696 | ev_periodic_start (EV_P_ ev_periodic *w) |
1363 | { |
2697 | { |
1364 | if (ev_is_active (w)) |
2698 | if (expect_false (ev_is_active (w))) |
1365 | return; |
2699 | return; |
1366 | |
2700 | |
1367 | if (w->reschedule_cb) |
2701 | if (w->reschedule_cb) |
1368 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2702 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1369 | else if (w->interval) |
2703 | else if (w->interval) |
1370 | { |
2704 | { |
1371 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2705 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1372 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2706 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1373 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2707 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1374 | } |
2708 | } |
|
|
2709 | else |
|
|
2710 | ev_at (w) = w->offset; |
1375 | |
2711 | |
|
|
2712 | EV_FREQUENT_CHECK; |
|
|
2713 | |
|
|
2714 | ++periodiccnt; |
1376 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2715 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1377 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
2716 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1378 | periodics [periodiccnt - 1] = w; |
2717 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1379 | upheap ((WT *)periodics, periodiccnt - 1); |
2718 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2719 | upheap (periodics, ev_active (w)); |
1380 | |
2720 | |
|
|
2721 | EV_FREQUENT_CHECK; |
|
|
2722 | |
1381 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2723 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1382 | } |
2724 | } |
1383 | |
2725 | |
1384 | void |
2726 | void noinline |
1385 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2727 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1386 | { |
2728 | { |
1387 | ev_clear_pending (EV_A_ (W)w); |
2729 | clear_pending (EV_A_ (W)w); |
1388 | if (!ev_is_active (w)) |
2730 | if (expect_false (!ev_is_active (w))) |
1389 | return; |
2731 | return; |
1390 | |
2732 | |
|
|
2733 | EV_FREQUENT_CHECK; |
|
|
2734 | |
|
|
2735 | { |
|
|
2736 | int active = ev_active (w); |
|
|
2737 | |
1391 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2738 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1392 | |
2739 | |
1393 | if (((W)w)->active < periodiccnt--) |
2740 | --periodiccnt; |
|
|
2741 | |
|
|
2742 | if (expect_true (active < periodiccnt + HEAP0)) |
1394 | { |
2743 | { |
1395 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2744 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1396 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2745 | adjustheap (periodics, periodiccnt, active); |
1397 | } |
2746 | } |
|
|
2747 | } |
1398 | |
2748 | |
1399 | ev_stop (EV_A_ (W)w); |
2749 | ev_stop (EV_A_ (W)w); |
1400 | } |
|
|
1401 | |
2750 | |
1402 | void |
2751 | EV_FREQUENT_CHECK; |
|
|
2752 | } |
|
|
2753 | |
|
|
2754 | void noinline |
1403 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
2755 | ev_periodic_again (EV_P_ ev_periodic *w) |
1404 | { |
2756 | { |
1405 | /* TODO: use adjustheap and recalculation */ |
2757 | /* TODO: use adjustheap and recalculation */ |
1406 | ev_periodic_stop (EV_A_ w); |
2758 | ev_periodic_stop (EV_A_ w); |
1407 | ev_periodic_start (EV_A_ w); |
2759 | ev_periodic_start (EV_A_ w); |
1408 | } |
2760 | } |
1409 | |
2761 | #endif |
1410 | void |
|
|
1411 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1412 | { |
|
|
1413 | if (ev_is_active (w)) |
|
|
1414 | return; |
|
|
1415 | |
|
|
1416 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1417 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1418 | idles [idlecnt - 1] = w; |
|
|
1419 | } |
|
|
1420 | |
|
|
1421 | void |
|
|
1422 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1423 | { |
|
|
1424 | ev_clear_pending (EV_A_ (W)w); |
|
|
1425 | if (ev_is_active (w)) |
|
|
1426 | return; |
|
|
1427 | |
|
|
1428 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1429 | ev_stop (EV_A_ (W)w); |
|
|
1430 | } |
|
|
1431 | |
|
|
1432 | void |
|
|
1433 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1434 | { |
|
|
1435 | if (ev_is_active (w)) |
|
|
1436 | return; |
|
|
1437 | |
|
|
1438 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1439 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1440 | prepares [preparecnt - 1] = w; |
|
|
1441 | } |
|
|
1442 | |
|
|
1443 | void |
|
|
1444 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1445 | { |
|
|
1446 | ev_clear_pending (EV_A_ (W)w); |
|
|
1447 | if (ev_is_active (w)) |
|
|
1448 | return; |
|
|
1449 | |
|
|
1450 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1451 | ev_stop (EV_A_ (W)w); |
|
|
1452 | } |
|
|
1453 | |
|
|
1454 | void |
|
|
1455 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1456 | { |
|
|
1457 | if (ev_is_active (w)) |
|
|
1458 | return; |
|
|
1459 | |
|
|
1460 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1461 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1462 | checks [checkcnt - 1] = w; |
|
|
1463 | } |
|
|
1464 | |
|
|
1465 | void |
|
|
1466 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1467 | { |
|
|
1468 | ev_clear_pending (EV_A_ (W)w); |
|
|
1469 | if (ev_is_active (w)) |
|
|
1470 | return; |
|
|
1471 | |
|
|
1472 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1473 | ev_stop (EV_A_ (W)w); |
|
|
1474 | } |
|
|
1475 | |
2762 | |
1476 | #ifndef SA_RESTART |
2763 | #ifndef SA_RESTART |
1477 | # define SA_RESTART 0 |
2764 | # define SA_RESTART 0 |
1478 | #endif |
2765 | #endif |
1479 | |
2766 | |
1480 | void |
2767 | #if EV_SIGNAL_ENABLE |
|
|
2768 | |
|
|
2769 | void noinline |
1481 | ev_signal_start (EV_P_ struct ev_signal *w) |
2770 | ev_signal_start (EV_P_ ev_signal *w) |
1482 | { |
2771 | { |
|
|
2772 | if (expect_false (ev_is_active (w))) |
|
|
2773 | return; |
|
|
2774 | |
|
|
2775 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
2776 | |
1483 | #if EV_MULTIPLICITY |
2777 | #if EV_MULTIPLICITY |
1484 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
2778 | assert (("libev: a signal must not be attached to two different loops", |
|
|
2779 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
2780 | |
|
|
2781 | signals [w->signum - 1].loop = EV_A; |
|
|
2782 | #endif |
|
|
2783 | |
|
|
2784 | EV_FREQUENT_CHECK; |
|
|
2785 | |
|
|
2786 | #if EV_USE_SIGNALFD |
|
|
2787 | if (sigfd == -2) |
|
|
2788 | { |
|
|
2789 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
2790 | if (sigfd < 0 && errno == EINVAL) |
|
|
2791 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
2792 | |
|
|
2793 | if (sigfd >= 0) |
|
|
2794 | { |
|
|
2795 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
2796 | |
|
|
2797 | sigemptyset (&sigfd_set); |
|
|
2798 | |
|
|
2799 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2800 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2801 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2802 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2803 | } |
|
|
2804 | } |
|
|
2805 | |
|
|
2806 | if (sigfd >= 0) |
|
|
2807 | { |
|
|
2808 | /* TODO: check .head */ |
|
|
2809 | sigaddset (&sigfd_set, w->signum); |
|
|
2810 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2811 | |
|
|
2812 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2813 | } |
|
|
2814 | #endif |
|
|
2815 | |
|
|
2816 | ev_start (EV_A_ (W)w, 1); |
|
|
2817 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2818 | |
|
|
2819 | if (!((WL)w)->next) |
|
|
2820 | # if EV_USE_SIGNALFD |
|
|
2821 | if (sigfd < 0) /*TODO*/ |
1485 | #endif |
2822 | # endif |
1486 | if (ev_is_active (w)) |
2823 | { |
|
|
2824 | # ifdef _WIN32 |
|
|
2825 | evpipe_init (EV_A); |
|
|
2826 | |
|
|
2827 | signal (w->signum, ev_sighandler); |
|
|
2828 | # else |
|
|
2829 | struct sigaction sa; |
|
|
2830 | |
|
|
2831 | evpipe_init (EV_A); |
|
|
2832 | |
|
|
2833 | sa.sa_handler = ev_sighandler; |
|
|
2834 | sigfillset (&sa.sa_mask); |
|
|
2835 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2836 | sigaction (w->signum, &sa, 0); |
|
|
2837 | |
|
|
2838 | sigemptyset (&sa.sa_mask); |
|
|
2839 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2840 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2841 | #endif |
|
|
2842 | } |
|
|
2843 | |
|
|
2844 | EV_FREQUENT_CHECK; |
|
|
2845 | } |
|
|
2846 | |
|
|
2847 | void noinline |
|
|
2848 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
2849 | { |
|
|
2850 | clear_pending (EV_A_ (W)w); |
|
|
2851 | if (expect_false (!ev_is_active (w))) |
1487 | return; |
2852 | return; |
1488 | |
2853 | |
1489 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2854 | EV_FREQUENT_CHECK; |
|
|
2855 | |
|
|
2856 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
2857 | ev_stop (EV_A_ (W)w); |
|
|
2858 | |
|
|
2859 | if (!signals [w->signum - 1].head) |
|
|
2860 | { |
|
|
2861 | #if EV_MULTIPLICITY |
|
|
2862 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2863 | #endif |
|
|
2864 | #if EV_USE_SIGNALFD |
|
|
2865 | if (sigfd >= 0) |
|
|
2866 | { |
|
|
2867 | sigset_t ss; |
|
|
2868 | |
|
|
2869 | sigemptyset (&ss); |
|
|
2870 | sigaddset (&ss, w->signum); |
|
|
2871 | sigdelset (&sigfd_set, w->signum); |
|
|
2872 | |
|
|
2873 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2874 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
2875 | } |
|
|
2876 | else |
|
|
2877 | #endif |
|
|
2878 | signal (w->signum, SIG_DFL); |
|
|
2879 | } |
|
|
2880 | |
|
|
2881 | EV_FREQUENT_CHECK; |
|
|
2882 | } |
|
|
2883 | |
|
|
2884 | #endif |
|
|
2885 | |
|
|
2886 | #if EV_CHILD_ENABLE |
|
|
2887 | |
|
|
2888 | void |
|
|
2889 | ev_child_start (EV_P_ ev_child *w) |
|
|
2890 | { |
|
|
2891 | #if EV_MULTIPLICITY |
|
|
2892 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2893 | #endif |
|
|
2894 | if (expect_false (ev_is_active (w))) |
|
|
2895 | return; |
|
|
2896 | |
|
|
2897 | EV_FREQUENT_CHECK; |
1490 | |
2898 | |
1491 | ev_start (EV_A_ (W)w, 1); |
2899 | ev_start (EV_A_ (W)w, 1); |
1492 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
2900 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1493 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1494 | |
2901 | |
1495 | if (!((WL)w)->next) |
2902 | EV_FREQUENT_CHECK; |
|
|
2903 | } |
|
|
2904 | |
|
|
2905 | void |
|
|
2906 | ev_child_stop (EV_P_ ev_child *w) |
|
|
2907 | { |
|
|
2908 | clear_pending (EV_A_ (W)w); |
|
|
2909 | if (expect_false (!ev_is_active (w))) |
|
|
2910 | return; |
|
|
2911 | |
|
|
2912 | EV_FREQUENT_CHECK; |
|
|
2913 | |
|
|
2914 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
2915 | ev_stop (EV_A_ (W)w); |
|
|
2916 | |
|
|
2917 | EV_FREQUENT_CHECK; |
|
|
2918 | } |
|
|
2919 | |
|
|
2920 | #endif |
|
|
2921 | |
|
|
2922 | #if EV_STAT_ENABLE |
|
|
2923 | |
|
|
2924 | # ifdef _WIN32 |
|
|
2925 | # undef lstat |
|
|
2926 | # define lstat(a,b) _stati64 (a,b) |
|
|
2927 | # endif |
|
|
2928 | |
|
|
2929 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2930 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2931 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2932 | |
|
|
2933 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2934 | |
|
|
2935 | #if EV_USE_INOTIFY |
|
|
2936 | |
|
|
2937 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
2938 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
2939 | |
|
|
2940 | static void noinline |
|
|
2941 | infy_add (EV_P_ ev_stat *w) |
|
|
2942 | { |
|
|
2943 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
2944 | |
|
|
2945 | if (w->wd >= 0) |
|
|
2946 | { |
|
|
2947 | struct statfs sfs; |
|
|
2948 | |
|
|
2949 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2950 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2951 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2952 | |
|
|
2953 | if (!fs_2625) |
|
|
2954 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2955 | else if (!statfs (w->path, &sfs) |
|
|
2956 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2957 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2958 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2959 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2960 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2961 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2962 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2963 | else |
|
|
2964 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
1496 | { |
2965 | } |
1497 | #if WIN32 |
2966 | else |
1498 | signal (w->signum, sighandler); |
2967 | { |
|
|
2968 | /* can't use inotify, continue to stat */ |
|
|
2969 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2970 | |
|
|
2971 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
2972 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2973 | /* but an efficiency issue only */ |
|
|
2974 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2975 | { |
|
|
2976 | char path [4096]; |
|
|
2977 | strcpy (path, w->path); |
|
|
2978 | |
|
|
2979 | do |
|
|
2980 | { |
|
|
2981 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2982 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2983 | |
|
|
2984 | char *pend = strrchr (path, '/'); |
|
|
2985 | |
|
|
2986 | if (!pend || pend == path) |
|
|
2987 | break; |
|
|
2988 | |
|
|
2989 | *pend = 0; |
|
|
2990 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2991 | } |
|
|
2992 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2993 | } |
|
|
2994 | } |
|
|
2995 | |
|
|
2996 | if (w->wd >= 0) |
|
|
2997 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
2998 | |
|
|
2999 | /* now re-arm timer, if required */ |
|
|
3000 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3001 | ev_timer_again (EV_A_ &w->timer); |
|
|
3002 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3003 | } |
|
|
3004 | |
|
|
3005 | static void noinline |
|
|
3006 | infy_del (EV_P_ ev_stat *w) |
|
|
3007 | { |
|
|
3008 | int slot; |
|
|
3009 | int wd = w->wd; |
|
|
3010 | |
|
|
3011 | if (wd < 0) |
|
|
3012 | return; |
|
|
3013 | |
|
|
3014 | w->wd = -2; |
|
|
3015 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
3016 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
3017 | |
|
|
3018 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
3019 | inotify_rm_watch (fs_fd, wd); |
|
|
3020 | } |
|
|
3021 | |
|
|
3022 | static void noinline |
|
|
3023 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
3024 | { |
|
|
3025 | if (slot < 0) |
|
|
3026 | /* overflow, need to check for all hash slots */ |
|
|
3027 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3028 | infy_wd (EV_A_ slot, wd, ev); |
|
|
3029 | else |
|
|
3030 | { |
|
|
3031 | WL w_; |
|
|
3032 | |
|
|
3033 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
3034 | { |
|
|
3035 | ev_stat *w = (ev_stat *)w_; |
|
|
3036 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
3037 | |
|
|
3038 | if (w->wd == wd || wd == -1) |
|
|
3039 | { |
|
|
3040 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
3041 | { |
|
|
3042 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3043 | w->wd = -1; |
|
|
3044 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3045 | } |
|
|
3046 | |
|
|
3047 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
3048 | } |
|
|
3049 | } |
|
|
3050 | } |
|
|
3051 | } |
|
|
3052 | |
|
|
3053 | static void |
|
|
3054 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
3055 | { |
|
|
3056 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
3057 | int ofs; |
|
|
3058 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
3059 | |
|
|
3060 | for (ofs = 0; ofs < len; ) |
|
|
3061 | { |
|
|
3062 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
3063 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3064 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
3065 | } |
|
|
3066 | } |
|
|
3067 | |
|
|
3068 | inline_size unsigned int |
|
|
3069 | ev_linux_version (void) |
|
|
3070 | { |
|
|
3071 | struct utsname buf; |
|
|
3072 | unsigned int v; |
|
|
3073 | int i; |
|
|
3074 | char *p = buf.release; |
|
|
3075 | |
|
|
3076 | if (uname (&buf)) |
|
|
3077 | return 0; |
|
|
3078 | |
|
|
3079 | for (i = 3+1; --i; ) |
|
|
3080 | { |
|
|
3081 | unsigned int c = 0; |
|
|
3082 | |
|
|
3083 | for (;;) |
|
|
3084 | { |
|
|
3085 | if (*p >= '0' && *p <= '9') |
|
|
3086 | c = c * 10 + *p++ - '0'; |
|
|
3087 | else |
|
|
3088 | { |
|
|
3089 | p += *p == '.'; |
|
|
3090 | break; |
|
|
3091 | } |
|
|
3092 | } |
|
|
3093 | |
|
|
3094 | v = (v << 8) | c; |
|
|
3095 | } |
|
|
3096 | |
|
|
3097 | return v; |
|
|
3098 | } |
|
|
3099 | |
|
|
3100 | inline_size void |
|
|
3101 | ev_check_2625 (EV_P) |
|
|
3102 | { |
|
|
3103 | /* kernels < 2.6.25 are borked |
|
|
3104 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
3105 | */ |
|
|
3106 | if (ev_linux_version () < 0x020619) |
|
|
3107 | return; |
|
|
3108 | |
|
|
3109 | fs_2625 = 1; |
|
|
3110 | } |
|
|
3111 | |
|
|
3112 | inline_size int |
|
|
3113 | infy_newfd (void) |
|
|
3114 | { |
|
|
3115 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3116 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3117 | if (fd >= 0) |
|
|
3118 | return fd; |
|
|
3119 | #endif |
|
|
3120 | return inotify_init (); |
|
|
3121 | } |
|
|
3122 | |
|
|
3123 | inline_size void |
|
|
3124 | infy_init (EV_P) |
|
|
3125 | { |
|
|
3126 | if (fs_fd != -2) |
|
|
3127 | return; |
|
|
3128 | |
|
|
3129 | fs_fd = -1; |
|
|
3130 | |
|
|
3131 | ev_check_2625 (EV_A); |
|
|
3132 | |
|
|
3133 | fs_fd = infy_newfd (); |
|
|
3134 | |
|
|
3135 | if (fs_fd >= 0) |
|
|
3136 | { |
|
|
3137 | fd_intern (fs_fd); |
|
|
3138 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
3139 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
3140 | ev_io_start (EV_A_ &fs_w); |
|
|
3141 | ev_unref (EV_A); |
|
|
3142 | } |
|
|
3143 | } |
|
|
3144 | |
|
|
3145 | inline_size void |
|
|
3146 | infy_fork (EV_P) |
|
|
3147 | { |
|
|
3148 | int slot; |
|
|
3149 | |
|
|
3150 | if (fs_fd < 0) |
|
|
3151 | return; |
|
|
3152 | |
|
|
3153 | ev_ref (EV_A); |
|
|
3154 | ev_io_stop (EV_A_ &fs_w); |
|
|
3155 | close (fs_fd); |
|
|
3156 | fs_fd = infy_newfd (); |
|
|
3157 | |
|
|
3158 | if (fs_fd >= 0) |
|
|
3159 | { |
|
|
3160 | fd_intern (fs_fd); |
|
|
3161 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3162 | ev_io_start (EV_A_ &fs_w); |
|
|
3163 | ev_unref (EV_A); |
|
|
3164 | } |
|
|
3165 | |
|
|
3166 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3167 | { |
|
|
3168 | WL w_ = fs_hash [slot].head; |
|
|
3169 | fs_hash [slot].head = 0; |
|
|
3170 | |
|
|
3171 | while (w_) |
|
|
3172 | { |
|
|
3173 | ev_stat *w = (ev_stat *)w_; |
|
|
3174 | w_ = w_->next; /* lets us add this watcher */ |
|
|
3175 | |
|
|
3176 | w->wd = -1; |
|
|
3177 | |
|
|
3178 | if (fs_fd >= 0) |
|
|
3179 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3180 | else |
|
|
3181 | { |
|
|
3182 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3183 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3184 | ev_timer_again (EV_A_ &w->timer); |
|
|
3185 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3186 | } |
|
|
3187 | } |
|
|
3188 | } |
|
|
3189 | } |
|
|
3190 | |
|
|
3191 | #endif |
|
|
3192 | |
|
|
3193 | #ifdef _WIN32 |
|
|
3194 | # define EV_LSTAT(p,b) _stati64 (p, b) |
1499 | #else |
3195 | #else |
1500 | struct sigaction sa; |
3196 | # define EV_LSTAT(p,b) lstat (p, b) |
1501 | sa.sa_handler = sighandler; |
|
|
1502 | sigfillset (&sa.sa_mask); |
|
|
1503 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1504 | sigaction (w->signum, &sa, 0); |
|
|
1505 | #endif |
3197 | #endif |
1506 | } |
|
|
1507 | } |
|
|
1508 | |
3198 | |
1509 | void |
3199 | void |
1510 | ev_signal_stop (EV_P_ struct ev_signal *w) |
3200 | ev_stat_stat (EV_P_ ev_stat *w) |
1511 | { |
3201 | { |
1512 | ev_clear_pending (EV_A_ (W)w); |
3202 | if (lstat (w->path, &w->attr) < 0) |
1513 | if (!ev_is_active (w)) |
3203 | w->attr.st_nlink = 0; |
|
|
3204 | else if (!w->attr.st_nlink) |
|
|
3205 | w->attr.st_nlink = 1; |
|
|
3206 | } |
|
|
3207 | |
|
|
3208 | static void noinline |
|
|
3209 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3210 | { |
|
|
3211 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3212 | |
|
|
3213 | ev_statdata prev = w->attr; |
|
|
3214 | ev_stat_stat (EV_A_ w); |
|
|
3215 | |
|
|
3216 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3217 | if ( |
|
|
3218 | prev.st_dev != w->attr.st_dev |
|
|
3219 | || prev.st_ino != w->attr.st_ino |
|
|
3220 | || prev.st_mode != w->attr.st_mode |
|
|
3221 | || prev.st_nlink != w->attr.st_nlink |
|
|
3222 | || prev.st_uid != w->attr.st_uid |
|
|
3223 | || prev.st_gid != w->attr.st_gid |
|
|
3224 | || prev.st_rdev != w->attr.st_rdev |
|
|
3225 | || prev.st_size != w->attr.st_size |
|
|
3226 | || prev.st_atime != w->attr.st_atime |
|
|
3227 | || prev.st_mtime != w->attr.st_mtime |
|
|
3228 | || prev.st_ctime != w->attr.st_ctime |
|
|
3229 | ) { |
|
|
3230 | /* we only update w->prev on actual differences */ |
|
|
3231 | /* in case we test more often than invoke the callback, */ |
|
|
3232 | /* to ensure that prev is always different to attr */ |
|
|
3233 | w->prev = prev; |
|
|
3234 | |
|
|
3235 | #if EV_USE_INOTIFY |
|
|
3236 | if (fs_fd >= 0) |
|
|
3237 | { |
|
|
3238 | infy_del (EV_A_ w); |
|
|
3239 | infy_add (EV_A_ w); |
|
|
3240 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3241 | } |
|
|
3242 | #endif |
|
|
3243 | |
|
|
3244 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3245 | } |
|
|
3246 | } |
|
|
3247 | |
|
|
3248 | void |
|
|
3249 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
3250 | { |
|
|
3251 | if (expect_false (ev_is_active (w))) |
1514 | return; |
3252 | return; |
1515 | |
3253 | |
1516 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
3254 | ev_stat_stat (EV_A_ w); |
|
|
3255 | |
|
|
3256 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3257 | w->interval = MIN_STAT_INTERVAL; |
|
|
3258 | |
|
|
3259 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3260 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3261 | |
|
|
3262 | #if EV_USE_INOTIFY |
|
|
3263 | infy_init (EV_A); |
|
|
3264 | |
|
|
3265 | if (fs_fd >= 0) |
|
|
3266 | infy_add (EV_A_ w); |
|
|
3267 | else |
|
|
3268 | #endif |
|
|
3269 | { |
|
|
3270 | ev_timer_again (EV_A_ &w->timer); |
|
|
3271 | ev_unref (EV_A); |
|
|
3272 | } |
|
|
3273 | |
|
|
3274 | ev_start (EV_A_ (W)w, 1); |
|
|
3275 | |
|
|
3276 | EV_FREQUENT_CHECK; |
|
|
3277 | } |
|
|
3278 | |
|
|
3279 | void |
|
|
3280 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
3281 | { |
|
|
3282 | clear_pending (EV_A_ (W)w); |
|
|
3283 | if (expect_false (!ev_is_active (w))) |
|
|
3284 | return; |
|
|
3285 | |
|
|
3286 | EV_FREQUENT_CHECK; |
|
|
3287 | |
|
|
3288 | #if EV_USE_INOTIFY |
|
|
3289 | infy_del (EV_A_ w); |
|
|
3290 | #endif |
|
|
3291 | |
|
|
3292 | if (ev_is_active (&w->timer)) |
|
|
3293 | { |
|
|
3294 | ev_ref (EV_A); |
|
|
3295 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3296 | } |
|
|
3297 | |
1517 | ev_stop (EV_A_ (W)w); |
3298 | ev_stop (EV_A_ (W)w); |
1518 | |
3299 | |
1519 | if (!signals [w->signum - 1].head) |
3300 | EV_FREQUENT_CHECK; |
1520 | signal (w->signum, SIG_DFL); |
|
|
1521 | } |
3301 | } |
|
|
3302 | #endif |
1522 | |
3303 | |
|
|
3304 | #if EV_IDLE_ENABLE |
1523 | void |
3305 | void |
1524 | ev_child_start (EV_P_ struct ev_child *w) |
3306 | ev_idle_start (EV_P_ ev_idle *w) |
1525 | { |
3307 | { |
1526 | #if EV_MULTIPLICITY |
|
|
1527 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1528 | #endif |
|
|
1529 | if (ev_is_active (w)) |
3308 | if (expect_false (ev_is_active (w))) |
1530 | return; |
3309 | return; |
1531 | |
3310 | |
|
|
3311 | pri_adjust (EV_A_ (W)w); |
|
|
3312 | |
|
|
3313 | EV_FREQUENT_CHECK; |
|
|
3314 | |
|
|
3315 | { |
|
|
3316 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3317 | |
|
|
3318 | ++idleall; |
|
|
3319 | ev_start (EV_A_ (W)w, active); |
|
|
3320 | |
|
|
3321 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
3322 | idles [ABSPRI (w)][active - 1] = w; |
|
|
3323 | } |
|
|
3324 | |
|
|
3325 | EV_FREQUENT_CHECK; |
|
|
3326 | } |
|
|
3327 | |
|
|
3328 | void |
|
|
3329 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3330 | { |
|
|
3331 | clear_pending (EV_A_ (W)w); |
|
|
3332 | if (expect_false (!ev_is_active (w))) |
|
|
3333 | return; |
|
|
3334 | |
|
|
3335 | EV_FREQUENT_CHECK; |
|
|
3336 | |
|
|
3337 | { |
|
|
3338 | int active = ev_active (w); |
|
|
3339 | |
|
|
3340 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3341 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3342 | |
|
|
3343 | ev_stop (EV_A_ (W)w); |
|
|
3344 | --idleall; |
|
|
3345 | } |
|
|
3346 | |
|
|
3347 | EV_FREQUENT_CHECK; |
|
|
3348 | } |
|
|
3349 | #endif |
|
|
3350 | |
|
|
3351 | #if EV_PREPARE_ENABLE |
|
|
3352 | void |
|
|
3353 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3354 | { |
|
|
3355 | if (expect_false (ev_is_active (w))) |
|
|
3356 | return; |
|
|
3357 | |
|
|
3358 | EV_FREQUENT_CHECK; |
|
|
3359 | |
|
|
3360 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
3361 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
3362 | prepares [preparecnt - 1] = w; |
|
|
3363 | |
|
|
3364 | EV_FREQUENT_CHECK; |
|
|
3365 | } |
|
|
3366 | |
|
|
3367 | void |
|
|
3368 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
3369 | { |
|
|
3370 | clear_pending (EV_A_ (W)w); |
|
|
3371 | if (expect_false (!ev_is_active (w))) |
|
|
3372 | return; |
|
|
3373 | |
|
|
3374 | EV_FREQUENT_CHECK; |
|
|
3375 | |
|
|
3376 | { |
|
|
3377 | int active = ev_active (w); |
|
|
3378 | |
|
|
3379 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3380 | ev_active (prepares [active - 1]) = active; |
|
|
3381 | } |
|
|
3382 | |
|
|
3383 | ev_stop (EV_A_ (W)w); |
|
|
3384 | |
|
|
3385 | EV_FREQUENT_CHECK; |
|
|
3386 | } |
|
|
3387 | #endif |
|
|
3388 | |
|
|
3389 | #if EV_CHECK_ENABLE |
|
|
3390 | void |
|
|
3391 | ev_check_start (EV_P_ ev_check *w) |
|
|
3392 | { |
|
|
3393 | if (expect_false (ev_is_active (w))) |
|
|
3394 | return; |
|
|
3395 | |
|
|
3396 | EV_FREQUENT_CHECK; |
|
|
3397 | |
|
|
3398 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
3399 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
3400 | checks [checkcnt - 1] = w; |
|
|
3401 | |
|
|
3402 | EV_FREQUENT_CHECK; |
|
|
3403 | } |
|
|
3404 | |
|
|
3405 | void |
|
|
3406 | ev_check_stop (EV_P_ ev_check *w) |
|
|
3407 | { |
|
|
3408 | clear_pending (EV_A_ (W)w); |
|
|
3409 | if (expect_false (!ev_is_active (w))) |
|
|
3410 | return; |
|
|
3411 | |
|
|
3412 | EV_FREQUENT_CHECK; |
|
|
3413 | |
|
|
3414 | { |
|
|
3415 | int active = ev_active (w); |
|
|
3416 | |
|
|
3417 | checks [active - 1] = checks [--checkcnt]; |
|
|
3418 | ev_active (checks [active - 1]) = active; |
|
|
3419 | } |
|
|
3420 | |
|
|
3421 | ev_stop (EV_A_ (W)w); |
|
|
3422 | |
|
|
3423 | EV_FREQUENT_CHECK; |
|
|
3424 | } |
|
|
3425 | #endif |
|
|
3426 | |
|
|
3427 | #if EV_EMBED_ENABLE |
|
|
3428 | void noinline |
|
|
3429 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
3430 | { |
|
|
3431 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3432 | } |
|
|
3433 | |
|
|
3434 | static void |
|
|
3435 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3436 | { |
|
|
3437 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3438 | |
|
|
3439 | if (ev_cb (w)) |
|
|
3440 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3441 | else |
|
|
3442 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3443 | } |
|
|
3444 | |
|
|
3445 | static void |
|
|
3446 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3447 | { |
|
|
3448 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3449 | |
|
|
3450 | { |
|
|
3451 | EV_P = w->other; |
|
|
3452 | |
|
|
3453 | while (fdchangecnt) |
|
|
3454 | { |
|
|
3455 | fd_reify (EV_A); |
|
|
3456 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3457 | } |
|
|
3458 | } |
|
|
3459 | } |
|
|
3460 | |
|
|
3461 | static void |
|
|
3462 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3463 | { |
|
|
3464 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3465 | |
|
|
3466 | ev_embed_stop (EV_A_ w); |
|
|
3467 | |
|
|
3468 | { |
|
|
3469 | EV_P = w->other; |
|
|
3470 | |
|
|
3471 | ev_loop_fork (EV_A); |
|
|
3472 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3473 | } |
|
|
3474 | |
|
|
3475 | ev_embed_start (EV_A_ w); |
|
|
3476 | } |
|
|
3477 | |
|
|
3478 | #if 0 |
|
|
3479 | static void |
|
|
3480 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3481 | { |
|
|
3482 | ev_idle_stop (EV_A_ idle); |
|
|
3483 | } |
|
|
3484 | #endif |
|
|
3485 | |
|
|
3486 | void |
|
|
3487 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3488 | { |
|
|
3489 | if (expect_false (ev_is_active (w))) |
|
|
3490 | return; |
|
|
3491 | |
|
|
3492 | { |
|
|
3493 | EV_P = w->other; |
|
|
3494 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3495 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3496 | } |
|
|
3497 | |
|
|
3498 | EV_FREQUENT_CHECK; |
|
|
3499 | |
|
|
3500 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3501 | ev_io_start (EV_A_ &w->io); |
|
|
3502 | |
|
|
3503 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3504 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3505 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3506 | |
|
|
3507 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3508 | ev_fork_start (EV_A_ &w->fork); |
|
|
3509 | |
|
|
3510 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3511 | |
1532 | ev_start (EV_A_ (W)w, 1); |
3512 | ev_start (EV_A_ (W)w, 1); |
1533 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1534 | } |
|
|
1535 | |
3513 | |
|
|
3514 | EV_FREQUENT_CHECK; |
|
|
3515 | } |
|
|
3516 | |
1536 | void |
3517 | void |
1537 | ev_child_stop (EV_P_ struct ev_child *w) |
3518 | ev_embed_stop (EV_P_ ev_embed *w) |
1538 | { |
3519 | { |
1539 | ev_clear_pending (EV_A_ (W)w); |
3520 | clear_pending (EV_A_ (W)w); |
1540 | if (ev_is_active (w)) |
3521 | if (expect_false (!ev_is_active (w))) |
1541 | return; |
3522 | return; |
1542 | |
3523 | |
1543 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3524 | EV_FREQUENT_CHECK; |
|
|
3525 | |
|
|
3526 | ev_io_stop (EV_A_ &w->io); |
|
|
3527 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3528 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3529 | |
1544 | ev_stop (EV_A_ (W)w); |
3530 | ev_stop (EV_A_ (W)w); |
|
|
3531 | |
|
|
3532 | EV_FREQUENT_CHECK; |
1545 | } |
3533 | } |
|
|
3534 | #endif |
|
|
3535 | |
|
|
3536 | #if EV_FORK_ENABLE |
|
|
3537 | void |
|
|
3538 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3539 | { |
|
|
3540 | if (expect_false (ev_is_active (w))) |
|
|
3541 | return; |
|
|
3542 | |
|
|
3543 | EV_FREQUENT_CHECK; |
|
|
3544 | |
|
|
3545 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3546 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3547 | forks [forkcnt - 1] = w; |
|
|
3548 | |
|
|
3549 | EV_FREQUENT_CHECK; |
|
|
3550 | } |
|
|
3551 | |
|
|
3552 | void |
|
|
3553 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3554 | { |
|
|
3555 | clear_pending (EV_A_ (W)w); |
|
|
3556 | if (expect_false (!ev_is_active (w))) |
|
|
3557 | return; |
|
|
3558 | |
|
|
3559 | EV_FREQUENT_CHECK; |
|
|
3560 | |
|
|
3561 | { |
|
|
3562 | int active = ev_active (w); |
|
|
3563 | |
|
|
3564 | forks [active - 1] = forks [--forkcnt]; |
|
|
3565 | ev_active (forks [active - 1]) = active; |
|
|
3566 | } |
|
|
3567 | |
|
|
3568 | ev_stop (EV_A_ (W)w); |
|
|
3569 | |
|
|
3570 | EV_FREQUENT_CHECK; |
|
|
3571 | } |
|
|
3572 | #endif |
|
|
3573 | |
|
|
3574 | #if EV_ASYNC_ENABLE |
|
|
3575 | void |
|
|
3576 | ev_async_start (EV_P_ ev_async *w) |
|
|
3577 | { |
|
|
3578 | if (expect_false (ev_is_active (w))) |
|
|
3579 | return; |
|
|
3580 | |
|
|
3581 | evpipe_init (EV_A); |
|
|
3582 | |
|
|
3583 | EV_FREQUENT_CHECK; |
|
|
3584 | |
|
|
3585 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3586 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3587 | asyncs [asynccnt - 1] = w; |
|
|
3588 | |
|
|
3589 | EV_FREQUENT_CHECK; |
|
|
3590 | } |
|
|
3591 | |
|
|
3592 | void |
|
|
3593 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3594 | { |
|
|
3595 | clear_pending (EV_A_ (W)w); |
|
|
3596 | if (expect_false (!ev_is_active (w))) |
|
|
3597 | return; |
|
|
3598 | |
|
|
3599 | EV_FREQUENT_CHECK; |
|
|
3600 | |
|
|
3601 | { |
|
|
3602 | int active = ev_active (w); |
|
|
3603 | |
|
|
3604 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3605 | ev_active (asyncs [active - 1]) = active; |
|
|
3606 | } |
|
|
3607 | |
|
|
3608 | ev_stop (EV_A_ (W)w); |
|
|
3609 | |
|
|
3610 | EV_FREQUENT_CHECK; |
|
|
3611 | } |
|
|
3612 | |
|
|
3613 | void |
|
|
3614 | ev_async_send (EV_P_ ev_async *w) |
|
|
3615 | { |
|
|
3616 | w->sent = 1; |
|
|
3617 | evpipe_write (EV_A_ &async_pending); |
|
|
3618 | } |
|
|
3619 | #endif |
1546 | |
3620 | |
1547 | /*****************************************************************************/ |
3621 | /*****************************************************************************/ |
1548 | |
3622 | |
1549 | struct ev_once |
3623 | struct ev_once |
1550 | { |
3624 | { |
1551 | struct ev_io io; |
3625 | ev_io io; |
1552 | struct ev_timer to; |
3626 | ev_timer to; |
1553 | void (*cb)(int revents, void *arg); |
3627 | void (*cb)(int revents, void *arg); |
1554 | void *arg; |
3628 | void *arg; |
1555 | }; |
3629 | }; |
1556 | |
3630 | |
1557 | static void |
3631 | static void |
1558 | once_cb (EV_P_ struct ev_once *once, int revents) |
3632 | once_cb (EV_P_ struct ev_once *once, int revents) |
1559 | { |
3633 | { |
1560 | void (*cb)(int revents, void *arg) = once->cb; |
3634 | void (*cb)(int revents, void *arg) = once->cb; |
1561 | void *arg = once->arg; |
3635 | void *arg = once->arg; |
1562 | |
3636 | |
1563 | ev_io_stop (EV_A_ &once->io); |
3637 | ev_io_stop (EV_A_ &once->io); |
1564 | ev_timer_stop (EV_A_ &once->to); |
3638 | ev_timer_stop (EV_A_ &once->to); |
1565 | ev_free (once); |
3639 | ev_free (once); |
1566 | |
3640 | |
1567 | cb (revents, arg); |
3641 | cb (revents, arg); |
1568 | } |
3642 | } |
1569 | |
3643 | |
1570 | static void |
3644 | static void |
1571 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
3645 | once_cb_io (EV_P_ ev_io *w, int revents) |
1572 | { |
3646 | { |
1573 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3647 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3648 | |
|
|
3649 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1574 | } |
3650 | } |
1575 | |
3651 | |
1576 | static void |
3652 | static void |
1577 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
3653 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1578 | { |
3654 | { |
1579 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3655 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
3656 | |
|
|
3657 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1580 | } |
3658 | } |
1581 | |
3659 | |
1582 | void |
3660 | void |
1583 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3661 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1584 | { |
3662 | { |
1585 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3663 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1586 | |
3664 | |
1587 | if (!once) |
3665 | if (expect_false (!once)) |
|
|
3666 | { |
1588 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3667 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
1589 | else |
3668 | return; |
1590 | { |
3669 | } |
|
|
3670 | |
1591 | once->cb = cb; |
3671 | once->cb = cb; |
1592 | once->arg = arg; |
3672 | once->arg = arg; |
1593 | |
3673 | |
1594 | ev_init (&once->io, once_cb_io); |
3674 | ev_init (&once->io, once_cb_io); |
1595 | if (fd >= 0) |
3675 | if (fd >= 0) |
|
|
3676 | { |
|
|
3677 | ev_io_set (&once->io, fd, events); |
|
|
3678 | ev_io_start (EV_A_ &once->io); |
|
|
3679 | } |
|
|
3680 | |
|
|
3681 | ev_init (&once->to, once_cb_to); |
|
|
3682 | if (timeout >= 0.) |
|
|
3683 | { |
|
|
3684 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3685 | ev_timer_start (EV_A_ &once->to); |
|
|
3686 | } |
|
|
3687 | } |
|
|
3688 | |
|
|
3689 | /*****************************************************************************/ |
|
|
3690 | |
|
|
3691 | #if EV_WALK_ENABLE |
|
|
3692 | void |
|
|
3693 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3694 | { |
|
|
3695 | int i, j; |
|
|
3696 | ev_watcher_list *wl, *wn; |
|
|
3697 | |
|
|
3698 | if (types & (EV_IO | EV_EMBED)) |
|
|
3699 | for (i = 0; i < anfdmax; ++i) |
|
|
3700 | for (wl = anfds [i].head; wl; ) |
1596 | { |
3701 | { |
1597 | ev_io_set (&once->io, fd, events); |
3702 | wn = wl->next; |
1598 | ev_io_start (EV_A_ &once->io); |
3703 | |
|
|
3704 | #if EV_EMBED_ENABLE |
|
|
3705 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3706 | { |
|
|
3707 | if (types & EV_EMBED) |
|
|
3708 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3709 | } |
|
|
3710 | else |
|
|
3711 | #endif |
|
|
3712 | #if EV_USE_INOTIFY |
|
|
3713 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3714 | ; |
|
|
3715 | else |
|
|
3716 | #endif |
|
|
3717 | if ((ev_io *)wl != &pipe_w) |
|
|
3718 | if (types & EV_IO) |
|
|
3719 | cb (EV_A_ EV_IO, wl); |
|
|
3720 | |
|
|
3721 | wl = wn; |
1599 | } |
3722 | } |
1600 | |
3723 | |
1601 | ev_init (&once->to, once_cb_to); |
3724 | if (types & (EV_TIMER | EV_STAT)) |
1602 | if (timeout >= 0.) |
3725 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3726 | #if EV_STAT_ENABLE |
|
|
3727 | /*TODO: timer is not always active*/ |
|
|
3728 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1603 | { |
3729 | { |
1604 | ev_timer_set (&once->to, timeout, 0.); |
3730 | if (types & EV_STAT) |
1605 | ev_timer_start (EV_A_ &once->to); |
3731 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1606 | } |
3732 | } |
1607 | } |
3733 | else |
|
|
3734 | #endif |
|
|
3735 | if (types & EV_TIMER) |
|
|
3736 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
|
|
3737 | |
|
|
3738 | #if EV_PERIODIC_ENABLE |
|
|
3739 | if (types & EV_PERIODIC) |
|
|
3740 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3741 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3742 | #endif |
|
|
3743 | |
|
|
3744 | #if EV_IDLE_ENABLE |
|
|
3745 | if (types & EV_IDLE) |
|
|
3746 | for (j = NUMPRI; i--; ) |
|
|
3747 | for (i = idlecnt [j]; i--; ) |
|
|
3748 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3749 | #endif |
|
|
3750 | |
|
|
3751 | #if EV_FORK_ENABLE |
|
|
3752 | if (types & EV_FORK) |
|
|
3753 | for (i = forkcnt; i--; ) |
|
|
3754 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3755 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3756 | #endif |
|
|
3757 | |
|
|
3758 | #if EV_ASYNC_ENABLE |
|
|
3759 | if (types & EV_ASYNC) |
|
|
3760 | for (i = asynccnt; i--; ) |
|
|
3761 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
3762 | #endif |
|
|
3763 | |
|
|
3764 | #if EV_PREPARE_ENABLE |
|
|
3765 | if (types & EV_PREPARE) |
|
|
3766 | for (i = preparecnt; i--; ) |
|
|
3767 | # if EV_EMBED_ENABLE |
|
|
3768 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
3769 | # endif |
|
|
3770 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
3771 | #endif |
|
|
3772 | |
|
|
3773 | #if EV_CHECK_ENABLE |
|
|
3774 | if (types & EV_CHECK) |
|
|
3775 | for (i = checkcnt; i--; ) |
|
|
3776 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
3777 | #endif |
|
|
3778 | |
|
|
3779 | #if EV_SIGNAL_ENABLE |
|
|
3780 | if (types & EV_SIGNAL) |
|
|
3781 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
3782 | for (wl = signals [i].head; wl; ) |
|
|
3783 | { |
|
|
3784 | wn = wl->next; |
|
|
3785 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
3786 | wl = wn; |
|
|
3787 | } |
|
|
3788 | #endif |
|
|
3789 | |
|
|
3790 | #if EV_CHILD_ENABLE |
|
|
3791 | if (types & EV_CHILD) |
|
|
3792 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
3793 | for (wl = childs [i]; wl; ) |
|
|
3794 | { |
|
|
3795 | wn = wl->next; |
|
|
3796 | cb (EV_A_ EV_CHILD, wl); |
|
|
3797 | wl = wn; |
|
|
3798 | } |
|
|
3799 | #endif |
|
|
3800 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
3801 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
1608 | } |
3802 | } |
|
|
3803 | #endif |
|
|
3804 | |
|
|
3805 | #if EV_MULTIPLICITY |
|
|
3806 | #include "ev_wrap.h" |
|
|
3807 | #endif |
1609 | |
3808 | |
1610 | #ifdef __cplusplus |
3809 | #ifdef __cplusplus |
1611 | } |
3810 | } |
1612 | #endif |
3811 | #endif |
1613 | |
3812 | |