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 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 |
37 | # ifdef EV_CONFIG_H |
46 | # ifdef EV_CONFIG_H |
38 | # include EV_CONFIG_H |
47 | # include EV_CONFIG_H |
39 | # else |
48 | # else |
40 | # include "config.h" |
49 | # include "config.h" |
41 | # endif |
50 | # endif |
42 | |
51 | |
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52 | # if HAVE_CLOCK_SYSCALL |
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53 | # ifndef EV_USE_CLOCK_SYSCALL |
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54 | # define EV_USE_CLOCK_SYSCALL 1 |
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55 | # ifndef EV_USE_REALTIME |
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56 | # define EV_USE_REALTIME 0 |
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57 | # endif |
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58 | # ifndef EV_USE_MONOTONIC |
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59 | # define EV_USE_MONOTONIC 1 |
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60 | # endif |
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61 | # endif |
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62 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
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63 | # define EV_USE_CLOCK_SYSCALL 0 |
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64 | # endif |
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65 | |
43 | # if HAVE_CLOCK_GETTIME |
66 | # if HAVE_CLOCK_GETTIME |
44 | # ifndef EV_USE_MONOTONIC |
67 | # ifndef EV_USE_MONOTONIC |
45 | # define EV_USE_MONOTONIC 1 |
68 | # define EV_USE_MONOTONIC 1 |
46 | # endif |
69 | # endif |
47 | # ifndef EV_USE_REALTIME |
70 | # ifndef EV_USE_REALTIME |
48 | # define EV_USE_REALTIME 1 |
71 | # define EV_USE_REALTIME 0 |
49 | # endif |
72 | # endif |
50 | # else |
73 | # else |
51 | # ifndef EV_USE_MONOTONIC |
74 | # ifndef EV_USE_MONOTONIC |
52 | # define EV_USE_MONOTONIC 0 |
75 | # define EV_USE_MONOTONIC 0 |
53 | # endif |
76 | # endif |
54 | # ifndef EV_USE_REALTIME |
77 | # ifndef EV_USE_REALTIME |
55 | # define EV_USE_REALTIME 0 |
78 | # define EV_USE_REALTIME 0 |
56 | # endif |
79 | # endif |
57 | # endif |
80 | # endif |
58 | |
81 | |
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82 | # ifndef EV_USE_NANOSLEEP |
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83 | # if HAVE_NANOSLEEP |
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84 | # define EV_USE_NANOSLEEP 1 |
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85 | # else |
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86 | # define EV_USE_NANOSLEEP 0 |
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87 | # endif |
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88 | # endif |
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89 | |
59 | # ifndef EV_USE_SELECT |
90 | # ifndef EV_USE_SELECT |
60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
61 | # define EV_USE_SELECT 1 |
92 | # define EV_USE_SELECT 1 |
62 | # else |
93 | # else |
63 | # define EV_USE_SELECT 0 |
94 | # define EV_USE_SELECT 0 |
… | |
… | |
94 | # else |
125 | # else |
95 | # define EV_USE_PORT 0 |
126 | # define EV_USE_PORT 0 |
96 | # endif |
127 | # endif |
97 | # endif |
128 | # endif |
98 | |
129 | |
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130 | # ifndef EV_USE_INOTIFY |
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131 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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132 | # define EV_USE_INOTIFY 1 |
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133 | # else |
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134 | # define EV_USE_INOTIFY 0 |
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135 | # endif |
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136 | # endif |
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137 | |
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138 | # ifndef EV_USE_SIGNALFD |
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139 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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140 | # define EV_USE_SIGNALFD 1 |
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141 | # else |
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142 | # define EV_USE_SIGNALFD 0 |
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143 | # endif |
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144 | # endif |
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145 | |
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146 | # ifndef EV_USE_EVENTFD |
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147 | # if HAVE_EVENTFD |
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148 | # define EV_USE_EVENTFD 1 |
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149 | # else |
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150 | # define EV_USE_EVENTFD 0 |
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151 | # endif |
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152 | # endif |
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153 | |
99 | #endif |
154 | #endif |
100 | |
155 | |
101 | #include <math.h> |
156 | #include <math.h> |
102 | #include <stdlib.h> |
157 | #include <stdlib.h> |
103 | #include <fcntl.h> |
158 | #include <fcntl.h> |
… | |
… | |
110 | #include <sys/types.h> |
165 | #include <sys/types.h> |
111 | #include <time.h> |
166 | #include <time.h> |
112 | |
167 | |
113 | #include <signal.h> |
168 | #include <signal.h> |
114 | |
169 | |
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170 | #ifdef EV_H |
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171 | # include EV_H |
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172 | #else |
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173 | # include "ev.h" |
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174 | #endif |
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175 | |
115 | #ifndef _WIN32 |
176 | #ifndef _WIN32 |
116 | # include <unistd.h> |
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117 | # include <sys/time.h> |
177 | # include <sys/time.h> |
118 | # include <sys/wait.h> |
178 | # include <sys/wait.h> |
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179 | # include <unistd.h> |
119 | #else |
180 | #else |
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181 | # include <io.h> |
120 | # define WIN32_LEAN_AND_MEAN |
182 | # define WIN32_LEAN_AND_MEAN |
121 | # include <windows.h> |
183 | # include <windows.h> |
122 | # ifndef EV_SELECT_IS_WINSOCKET |
184 | # ifndef EV_SELECT_IS_WINSOCKET |
123 | # define EV_SELECT_IS_WINSOCKET 1 |
185 | # define EV_SELECT_IS_WINSOCKET 1 |
124 | # endif |
186 | # endif |
125 | #endif |
187 | #endif |
126 | |
188 | |
127 | /**/ |
189 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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190 | |
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191 | /* try to deduce the maximum number of signals on this platform */ |
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192 | #if defined (EV_NSIG) |
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193 | /* use what's provided */ |
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194 | #elif defined (NSIG) |
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195 | # define EV_NSIG (NSIG) |
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196 | #elif defined(_NSIG) |
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197 | # define EV_NSIG (_NSIG) |
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198 | #elif defined (SIGMAX) |
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199 | # define EV_NSIG (SIGMAX+1) |
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200 | #elif defined (SIG_MAX) |
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201 | # define EV_NSIG (SIG_MAX+1) |
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202 | #elif defined (_SIG_MAX) |
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203 | # define EV_NSIG (_SIG_MAX+1) |
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204 | #elif defined (MAXSIG) |
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205 | # define EV_NSIG (MAXSIG+1) |
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206 | #elif defined (MAX_SIG) |
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207 | # define EV_NSIG (MAX_SIG+1) |
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208 | #elif defined (SIGARRAYSIZE) |
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209 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
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210 | #elif defined (_sys_nsig) |
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211 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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212 | #else |
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213 | # error "unable to find value for NSIG, please report" |
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214 | /* to make it compile regardless, just remove the above line */ |
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215 | # define EV_NSIG 65 |
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216 | #endif |
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217 | |
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218 | #ifndef EV_USE_CLOCK_SYSCALL |
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219 | # if __linux && __GLIBC__ >= 2 |
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220 | # define EV_USE_CLOCK_SYSCALL 1 |
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221 | # else |
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222 | # define EV_USE_CLOCK_SYSCALL 0 |
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223 | # endif |
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224 | #endif |
128 | |
225 | |
129 | #ifndef EV_USE_MONOTONIC |
226 | #ifndef EV_USE_MONOTONIC |
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227 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
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228 | # define EV_USE_MONOTONIC 1 |
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229 | # else |
130 | # define EV_USE_MONOTONIC 0 |
230 | # define EV_USE_MONOTONIC 0 |
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231 | # endif |
131 | #endif |
232 | #endif |
132 | |
233 | |
133 | #ifndef EV_USE_REALTIME |
234 | #ifndef EV_USE_REALTIME |
134 | # define EV_USE_REALTIME 0 |
235 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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236 | #endif |
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237 | |
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238 | #ifndef EV_USE_NANOSLEEP |
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239 | # if _POSIX_C_SOURCE >= 199309L |
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240 | # define EV_USE_NANOSLEEP 1 |
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241 | # else |
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242 | # define EV_USE_NANOSLEEP 0 |
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243 | # endif |
135 | #endif |
244 | #endif |
136 | |
245 | |
137 | #ifndef EV_USE_SELECT |
246 | #ifndef EV_USE_SELECT |
138 | # define EV_USE_SELECT 1 |
247 | # define EV_USE_SELECT 1 |
139 | #endif |
248 | #endif |
… | |
… | |
145 | # define EV_USE_POLL 1 |
254 | # define EV_USE_POLL 1 |
146 | # endif |
255 | # endif |
147 | #endif |
256 | #endif |
148 | |
257 | |
149 | #ifndef EV_USE_EPOLL |
258 | #ifndef EV_USE_EPOLL |
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259 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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260 | # define EV_USE_EPOLL 1 |
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261 | # else |
150 | # define EV_USE_EPOLL 0 |
262 | # define EV_USE_EPOLL 0 |
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263 | # endif |
151 | #endif |
264 | #endif |
152 | |
265 | |
153 | #ifndef EV_USE_KQUEUE |
266 | #ifndef EV_USE_KQUEUE |
154 | # define EV_USE_KQUEUE 0 |
267 | # define EV_USE_KQUEUE 0 |
155 | #endif |
268 | #endif |
156 | |
269 | |
157 | #ifndef EV_USE_PORT |
270 | #ifndef EV_USE_PORT |
158 | # define EV_USE_PORT 0 |
271 | # define EV_USE_PORT 0 |
159 | #endif |
272 | #endif |
160 | |
273 | |
161 | /**/ |
274 | #ifndef EV_USE_INOTIFY |
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275 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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276 | # define EV_USE_INOTIFY 1 |
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277 | # else |
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278 | # define EV_USE_INOTIFY 0 |
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279 | # endif |
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280 | #endif |
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281 | |
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282 | #ifndef EV_PID_HASHSIZE |
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283 | # if EV_MINIMAL |
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284 | # define EV_PID_HASHSIZE 1 |
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285 | # else |
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286 | # define EV_PID_HASHSIZE 16 |
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287 | # endif |
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288 | #endif |
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289 | |
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290 | #ifndef EV_INOTIFY_HASHSIZE |
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291 | # if EV_MINIMAL |
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292 | # define EV_INOTIFY_HASHSIZE 1 |
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293 | # else |
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294 | # define EV_INOTIFY_HASHSIZE 16 |
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295 | # endif |
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296 | #endif |
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297 | |
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298 | #ifndef EV_USE_EVENTFD |
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299 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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300 | # define EV_USE_EVENTFD 1 |
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301 | # else |
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302 | # define EV_USE_EVENTFD 0 |
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303 | # endif |
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304 | #endif |
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305 | |
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306 | #ifndef EV_USE_SIGNALFD |
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307 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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308 | # define EV_USE_SIGNALFD 1 |
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309 | # else |
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310 | # define EV_USE_SIGNALFD 0 |
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311 | # endif |
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312 | #endif |
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313 | |
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314 | #if 0 /* debugging */ |
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315 | # define EV_VERIFY 3 |
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316 | # define EV_USE_4HEAP 1 |
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317 | # define EV_HEAP_CACHE_AT 1 |
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318 | #endif |
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319 | |
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320 | #ifndef EV_VERIFY |
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321 | # define EV_VERIFY !EV_MINIMAL |
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322 | #endif |
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323 | |
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324 | #ifndef EV_USE_4HEAP |
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325 | # define EV_USE_4HEAP !EV_MINIMAL |
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326 | #endif |
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327 | |
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328 | #ifndef EV_HEAP_CACHE_AT |
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329 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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330 | #endif |
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331 | |
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332 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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333 | /* which makes programs even slower. might work on other unices, too. */ |
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334 | #if EV_USE_CLOCK_SYSCALL |
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335 | # include <syscall.h> |
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336 | # ifdef SYS_clock_gettime |
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337 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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338 | # undef EV_USE_MONOTONIC |
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339 | # define EV_USE_MONOTONIC 1 |
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340 | # else |
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341 | # undef EV_USE_CLOCK_SYSCALL |
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342 | # define EV_USE_CLOCK_SYSCALL 0 |
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343 | # endif |
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344 | #endif |
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345 | |
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346 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
162 | |
347 | |
163 | #ifndef CLOCK_MONOTONIC |
348 | #ifndef CLOCK_MONOTONIC |
164 | # undef EV_USE_MONOTONIC |
349 | # undef EV_USE_MONOTONIC |
165 | # define EV_USE_MONOTONIC 0 |
350 | # define EV_USE_MONOTONIC 0 |
166 | #endif |
351 | #endif |
… | |
… | |
168 | #ifndef CLOCK_REALTIME |
353 | #ifndef CLOCK_REALTIME |
169 | # undef EV_USE_REALTIME |
354 | # undef EV_USE_REALTIME |
170 | # define EV_USE_REALTIME 0 |
355 | # define EV_USE_REALTIME 0 |
171 | #endif |
356 | #endif |
172 | |
357 | |
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358 | #if !EV_STAT_ENABLE |
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359 | # undef EV_USE_INOTIFY |
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360 | # define EV_USE_INOTIFY 0 |
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361 | #endif |
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362 | |
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363 | #if !EV_USE_NANOSLEEP |
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364 | # ifndef _WIN32 |
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365 | # include <sys/select.h> |
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366 | # endif |
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367 | #endif |
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368 | |
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369 | #if EV_USE_INOTIFY |
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370 | # include <sys/utsname.h> |
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371 | # include <sys/statfs.h> |
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372 | # include <sys/inotify.h> |
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373 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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374 | # ifndef IN_DONT_FOLLOW |
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375 | # undef EV_USE_INOTIFY |
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376 | # define EV_USE_INOTIFY 0 |
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377 | # endif |
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378 | #endif |
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379 | |
173 | #if EV_SELECT_IS_WINSOCKET |
380 | #if EV_SELECT_IS_WINSOCKET |
174 | # include <winsock.h> |
381 | # include <winsock.h> |
175 | #endif |
382 | #endif |
176 | |
383 | |
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384 | #if EV_USE_EVENTFD |
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385 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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386 | # include <stdint.h> |
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387 | # ifndef EFD_NONBLOCK |
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388 | # define EFD_NONBLOCK O_NONBLOCK |
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389 | # endif |
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390 | # ifndef EFD_CLOEXEC |
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391 | # ifdef O_CLOEXEC |
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392 | # define EFD_CLOEXEC O_CLOEXEC |
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393 | # else |
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394 | # define EFD_CLOEXEC 02000000 |
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395 | # endif |
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396 | # endif |
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397 | # ifdef __cplusplus |
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398 | extern "C" { |
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399 | # endif |
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400 | int eventfd (unsigned int initval, int flags); |
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401 | # ifdef __cplusplus |
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402 | } |
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403 | # endif |
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404 | #endif |
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405 | |
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406 | #if EV_USE_SIGNALFD |
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407 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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408 | # include <stdint.h> |
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409 | # ifndef SFD_NONBLOCK |
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410 | # define SFD_NONBLOCK O_NONBLOCK |
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411 | # endif |
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412 | # ifndef SFD_CLOEXEC |
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413 | # ifdef O_CLOEXEC |
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414 | # define SFD_CLOEXEC O_CLOEXEC |
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415 | # else |
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416 | # define SFD_CLOEXEC 02000000 |
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417 | # endif |
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418 | # endif |
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419 | # ifdef __cplusplus |
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420 | extern "C" { |
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421 | # endif |
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422 | int signalfd (int fd, const sigset_t *mask, int flags); |
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423 | |
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424 | struct signalfd_siginfo |
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425 | { |
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426 | uint32_t ssi_signo; |
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427 | char pad[128 - sizeof (uint32_t)]; |
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428 | }; |
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429 | # ifdef __cplusplus |
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430 | } |
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431 | # endif |
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432 | #endif |
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433 | |
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434 | |
177 | /**/ |
435 | /**/ |
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436 | |
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437 | #if EV_VERIFY >= 3 |
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438 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
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439 | #else |
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440 | # define EV_FREQUENT_CHECK do { } while (0) |
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441 | #endif |
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442 | |
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443 | /* |
|
|
444 | * This is used to avoid floating point rounding problems. |
|
|
445 | * It is added to ev_rt_now when scheduling periodics |
|
|
446 | * to ensure progress, time-wise, even when rounding |
|
|
447 | * errors are against us. |
|
|
448 | * This value is good at least till the year 4000. |
|
|
449 | * Better solutions welcome. |
|
|
450 | */ |
|
|
451 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
178 | |
452 | |
179 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
453 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
180 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
454 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
181 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
182 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
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|
183 | |
455 | |
184 | #ifdef EV_H |
|
|
185 | # include EV_H |
|
|
186 | #else |
|
|
187 | # include "ev.h" |
|
|
188 | #endif |
|
|
189 | |
|
|
190 | #if __GNUC__ >= 3 |
456 | #if __GNUC__ >= 4 |
191 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
457 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
192 | # define inline static inline |
458 | # define noinline __attribute__ ((noinline)) |
193 | #else |
459 | #else |
194 | # define expect(expr,value) (expr) |
460 | # define expect(expr,value) (expr) |
195 | # define inline static |
461 | # define noinline |
|
|
462 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
463 | # define inline |
|
|
464 | # endif |
196 | #endif |
465 | #endif |
197 | |
466 | |
198 | #define expect_false(expr) expect ((expr) != 0, 0) |
467 | #define expect_false(expr) expect ((expr) != 0, 0) |
199 | #define expect_true(expr) expect ((expr) != 0, 1) |
468 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
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469 | #define inline_size static inline |
200 | |
470 | |
|
|
471 | #if EV_MINIMAL |
|
|
472 | # define inline_speed static noinline |
|
|
473 | #else |
|
|
474 | # define inline_speed static inline |
|
|
475 | #endif |
|
|
476 | |
201 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
477 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
478 | |
|
|
479 | #if EV_MINPRI == EV_MAXPRI |
|
|
480 | # define ABSPRI(w) (((W)w), 0) |
|
|
481 | #else |
202 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
482 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
483 | #endif |
203 | |
484 | |
204 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
485 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
205 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
486 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
206 | |
487 | |
207 | typedef ev_watcher *W; |
488 | typedef ev_watcher *W; |
208 | typedef ev_watcher_list *WL; |
489 | typedef ev_watcher_list *WL; |
209 | typedef ev_watcher_time *WT; |
490 | typedef ev_watcher_time *WT; |
210 | |
491 | |
|
|
492 | #define ev_active(w) ((W)(w))->active |
|
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493 | #define ev_at(w) ((WT)(w))->at |
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494 | |
|
|
495 | #if EV_USE_REALTIME |
|
|
496 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
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497 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
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498 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
499 | #endif |
|
|
500 | |
|
|
501 | #if EV_USE_MONOTONIC |
211 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
502 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
503 | #endif |
|
|
504 | |
|
|
505 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
506 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
507 | #endif |
|
|
508 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
509 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) |
|
|
510 | #endif |
|
|
511 | #ifndef EV_WIN32_CLOSE_FD |
|
|
512 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
513 | #endif |
212 | |
514 | |
213 | #ifdef _WIN32 |
515 | #ifdef _WIN32 |
214 | # include "ev_win32.c" |
516 | # include "ev_win32.c" |
215 | #endif |
517 | #endif |
216 | |
518 | |
217 | /*****************************************************************************/ |
519 | /*****************************************************************************/ |
218 | |
520 | |
219 | static void (*syserr_cb)(const char *msg); |
521 | static void (*syserr_cb)(const char *msg); |
220 | |
522 | |
|
|
523 | void |
221 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
524 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
222 | { |
525 | { |
223 | syserr_cb = cb; |
526 | syserr_cb = cb; |
224 | } |
527 | } |
225 | |
528 | |
226 | static void |
529 | static void noinline |
227 | syserr (const char *msg) |
530 | ev_syserr (const char *msg) |
228 | { |
531 | { |
229 | if (!msg) |
532 | if (!msg) |
230 | msg = "(libev) system error"; |
533 | msg = "(libev) system error"; |
231 | |
534 | |
232 | if (syserr_cb) |
535 | if (syserr_cb) |
… | |
… | |
236 | perror (msg); |
539 | perror (msg); |
237 | abort (); |
540 | abort (); |
238 | } |
541 | } |
239 | } |
542 | } |
240 | |
543 | |
|
|
544 | static void * |
|
|
545 | ev_realloc_emul (void *ptr, long size) |
|
|
546 | { |
|
|
547 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
548 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
549 | * the single unix specification, so work around them here. |
|
|
550 | */ |
|
|
551 | |
|
|
552 | if (size) |
|
|
553 | return realloc (ptr, size); |
|
|
554 | |
|
|
555 | free (ptr); |
|
|
556 | return 0; |
|
|
557 | } |
|
|
558 | |
241 | static void *(*alloc)(void *ptr, long size); |
559 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
242 | |
560 | |
|
|
561 | void |
243 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
562 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
244 | { |
563 | { |
245 | alloc = cb; |
564 | alloc = cb; |
246 | } |
565 | } |
247 | |
566 | |
248 | static void * |
567 | inline_speed void * |
249 | ev_realloc (void *ptr, long size) |
568 | ev_realloc (void *ptr, long size) |
250 | { |
569 | { |
251 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
570 | ptr = alloc (ptr, size); |
252 | |
571 | |
253 | if (!ptr && size) |
572 | if (!ptr && size) |
254 | { |
573 | { |
255 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
574 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
256 | abort (); |
575 | abort (); |
… | |
… | |
262 | #define ev_malloc(size) ev_realloc (0, (size)) |
581 | #define ev_malloc(size) ev_realloc (0, (size)) |
263 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
582 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
264 | |
583 | |
265 | /*****************************************************************************/ |
584 | /*****************************************************************************/ |
266 | |
585 | |
|
|
586 | /* set in reify when reification needed */ |
|
|
587 | #define EV_ANFD_REIFY 1 |
|
|
588 | |
|
|
589 | /* file descriptor info structure */ |
267 | typedef struct |
590 | typedef struct |
268 | { |
591 | { |
269 | WL head; |
592 | WL head; |
270 | unsigned char events; |
593 | unsigned char events; /* the events watched for */ |
|
|
594 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
595 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
271 | unsigned char reify; |
596 | unsigned char unused; |
|
|
597 | #if EV_USE_EPOLL |
|
|
598 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
599 | #endif |
272 | #if EV_SELECT_IS_WINSOCKET |
600 | #if EV_SELECT_IS_WINSOCKET |
273 | SOCKET handle; |
601 | SOCKET handle; |
274 | #endif |
602 | #endif |
275 | } ANFD; |
603 | } ANFD; |
276 | |
604 | |
|
|
605 | /* stores the pending event set for a given watcher */ |
277 | typedef struct |
606 | typedef struct |
278 | { |
607 | { |
279 | W w; |
608 | W w; |
280 | int events; |
609 | int events; /* the pending event set for the given watcher */ |
281 | } ANPENDING; |
610 | } ANPENDING; |
|
|
611 | |
|
|
612 | #if EV_USE_INOTIFY |
|
|
613 | /* hash table entry per inotify-id */ |
|
|
614 | typedef struct |
|
|
615 | { |
|
|
616 | WL head; |
|
|
617 | } ANFS; |
|
|
618 | #endif |
|
|
619 | |
|
|
620 | /* Heap Entry */ |
|
|
621 | #if EV_HEAP_CACHE_AT |
|
|
622 | /* a heap element */ |
|
|
623 | typedef struct { |
|
|
624 | ev_tstamp at; |
|
|
625 | WT w; |
|
|
626 | } ANHE; |
|
|
627 | |
|
|
628 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
629 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
630 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
631 | #else |
|
|
632 | /* a heap element */ |
|
|
633 | typedef WT ANHE; |
|
|
634 | |
|
|
635 | #define ANHE_w(he) (he) |
|
|
636 | #define ANHE_at(he) (he)->at |
|
|
637 | #define ANHE_at_cache(he) |
|
|
638 | #endif |
282 | |
639 | |
283 | #if EV_MULTIPLICITY |
640 | #if EV_MULTIPLICITY |
284 | |
641 | |
285 | struct ev_loop |
642 | struct ev_loop |
286 | { |
643 | { |
… | |
… | |
304 | |
661 | |
305 | static int ev_default_loop_ptr; |
662 | static int ev_default_loop_ptr; |
306 | |
663 | |
307 | #endif |
664 | #endif |
308 | |
665 | |
|
|
666 | #if EV_MINIMAL < 2 |
|
|
667 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
668 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
669 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
670 | #else |
|
|
671 | # define EV_RELEASE_CB (void)0 |
|
|
672 | # define EV_ACQUIRE_CB (void)0 |
|
|
673 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
674 | #endif |
|
|
675 | |
|
|
676 | #define EVUNLOOP_RECURSE 0x80 |
|
|
677 | |
309 | /*****************************************************************************/ |
678 | /*****************************************************************************/ |
310 | |
679 | |
|
|
680 | #ifndef EV_HAVE_EV_TIME |
311 | ev_tstamp |
681 | ev_tstamp |
312 | ev_time (void) |
682 | ev_time (void) |
313 | { |
683 | { |
314 | #if EV_USE_REALTIME |
684 | #if EV_USE_REALTIME |
|
|
685 | if (expect_true (have_realtime)) |
|
|
686 | { |
315 | struct timespec ts; |
687 | struct timespec ts; |
316 | clock_gettime (CLOCK_REALTIME, &ts); |
688 | clock_gettime (CLOCK_REALTIME, &ts); |
317 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
689 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
318 | #else |
690 | } |
|
|
691 | #endif |
|
|
692 | |
319 | struct timeval tv; |
693 | struct timeval tv; |
320 | gettimeofday (&tv, 0); |
694 | gettimeofday (&tv, 0); |
321 | return tv.tv_sec + tv.tv_usec * 1e-6; |
695 | return tv.tv_sec + tv.tv_usec * 1e-6; |
322 | #endif |
|
|
323 | } |
696 | } |
|
|
697 | #endif |
324 | |
698 | |
325 | inline ev_tstamp |
699 | inline_size ev_tstamp |
326 | get_clock (void) |
700 | get_clock (void) |
327 | { |
701 | { |
328 | #if EV_USE_MONOTONIC |
702 | #if EV_USE_MONOTONIC |
329 | if (expect_true (have_monotonic)) |
703 | if (expect_true (have_monotonic)) |
330 | { |
704 | { |
… | |
… | |
343 | { |
717 | { |
344 | return ev_rt_now; |
718 | return ev_rt_now; |
345 | } |
719 | } |
346 | #endif |
720 | #endif |
347 | |
721 | |
348 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
722 | void |
|
|
723 | ev_sleep (ev_tstamp delay) |
|
|
724 | { |
|
|
725 | if (delay > 0.) |
|
|
726 | { |
|
|
727 | #if EV_USE_NANOSLEEP |
|
|
728 | struct timespec ts; |
|
|
729 | |
|
|
730 | ts.tv_sec = (time_t)delay; |
|
|
731 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
732 | |
|
|
733 | nanosleep (&ts, 0); |
|
|
734 | #elif defined(_WIN32) |
|
|
735 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
736 | #else |
|
|
737 | struct timeval tv; |
|
|
738 | |
|
|
739 | tv.tv_sec = (time_t)delay; |
|
|
740 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
741 | |
|
|
742 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
743 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
744 | /* by older ones */ |
|
|
745 | select (0, 0, 0, 0, &tv); |
|
|
746 | #endif |
|
|
747 | } |
|
|
748 | } |
|
|
749 | |
|
|
750 | /*****************************************************************************/ |
|
|
751 | |
|
|
752 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
753 | |
|
|
754 | /* find a suitable new size for the given array, */ |
|
|
755 | /* hopefully by rounding to a ncie-to-malloc size */ |
|
|
756 | inline_size int |
|
|
757 | array_nextsize (int elem, int cur, int cnt) |
|
|
758 | { |
|
|
759 | int ncur = cur + 1; |
|
|
760 | |
|
|
761 | do |
|
|
762 | ncur <<= 1; |
|
|
763 | while (cnt > ncur); |
|
|
764 | |
|
|
765 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
766 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
767 | { |
|
|
768 | ncur *= elem; |
|
|
769 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
770 | ncur = ncur - sizeof (void *) * 4; |
|
|
771 | ncur /= elem; |
|
|
772 | } |
|
|
773 | |
|
|
774 | return ncur; |
|
|
775 | } |
|
|
776 | |
|
|
777 | static noinline void * |
|
|
778 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
779 | { |
|
|
780 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
781 | return ev_realloc (base, elem * *cur); |
|
|
782 | } |
|
|
783 | |
|
|
784 | #define array_init_zero(base,count) \ |
|
|
785 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
349 | |
786 | |
350 | #define array_needsize(type,base,cur,cnt,init) \ |
787 | #define array_needsize(type,base,cur,cnt,init) \ |
351 | if (expect_false ((cnt) > cur)) \ |
788 | if (expect_false ((cnt) > (cur))) \ |
352 | { \ |
789 | { \ |
353 | int newcnt = cur; \ |
790 | int ocur_ = (cur); \ |
354 | do \ |
791 | (base) = (type *)array_realloc \ |
355 | { \ |
792 | (sizeof (type), (base), &(cur), (cnt)); \ |
356 | newcnt = array_roundsize (type, newcnt << 1); \ |
793 | init ((base) + (ocur_), (cur) - ocur_); \ |
357 | } \ |
|
|
358 | while ((cnt) > newcnt); \ |
|
|
359 | \ |
|
|
360 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
361 | init (base + cur, newcnt - cur); \ |
|
|
362 | cur = newcnt; \ |
|
|
363 | } |
794 | } |
364 | |
795 | |
|
|
796 | #if 0 |
365 | #define array_slim(type,stem) \ |
797 | #define array_slim(type,stem) \ |
366 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
798 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
367 | { \ |
799 | { \ |
368 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
800 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
369 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
801 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
370 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
802 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
371 | } |
803 | } |
|
|
804 | #endif |
372 | |
805 | |
373 | #define array_free(stem, idx) \ |
806 | #define array_free(stem, idx) \ |
374 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
807 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
375 | |
808 | |
376 | /*****************************************************************************/ |
809 | /*****************************************************************************/ |
377 | |
810 | |
378 | static void |
811 | /* dummy callback for pending events */ |
379 | anfds_init (ANFD *base, int count) |
812 | static void noinline |
|
|
813 | pendingcb (EV_P_ ev_prepare *w, int revents) |
380 | { |
814 | { |
381 | while (count--) |
|
|
382 | { |
|
|
383 | base->head = 0; |
|
|
384 | base->events = EV_NONE; |
|
|
385 | base->reify = 0; |
|
|
386 | |
|
|
387 | ++base; |
|
|
388 | } |
|
|
389 | } |
815 | } |
390 | |
816 | |
391 | void |
817 | void noinline |
392 | ev_feed_event (EV_P_ void *w, int revents) |
818 | ev_feed_event (EV_P_ void *w, int revents) |
393 | { |
819 | { |
394 | W w_ = (W)w; |
820 | W w_ = (W)w; |
|
|
821 | int pri = ABSPRI (w_); |
395 | |
822 | |
396 | if (expect_false (w_->pending)) |
823 | if (expect_false (w_->pending)) |
|
|
824 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
825 | else |
397 | { |
826 | { |
|
|
827 | w_->pending = ++pendingcnt [pri]; |
|
|
828 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
829 | pendings [pri][w_->pending - 1].w = w_; |
398 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
830 | pendings [pri][w_->pending - 1].events = revents; |
399 | return; |
|
|
400 | } |
831 | } |
401 | |
|
|
402 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
403 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
|
|
404 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
405 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
406 | } |
832 | } |
407 | |
833 | |
408 | static void |
834 | inline_speed void |
|
|
835 | feed_reverse (EV_P_ W w) |
|
|
836 | { |
|
|
837 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
838 | rfeeds [rfeedcnt++] = w; |
|
|
839 | } |
|
|
840 | |
|
|
841 | inline_size void |
|
|
842 | feed_reverse_done (EV_P_ int revents) |
|
|
843 | { |
|
|
844 | do |
|
|
845 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
846 | while (rfeedcnt); |
|
|
847 | } |
|
|
848 | |
|
|
849 | inline_speed void |
409 | queue_events (EV_P_ W *events, int eventcnt, int type) |
850 | queue_events (EV_P_ W *events, int eventcnt, int type) |
410 | { |
851 | { |
411 | int i; |
852 | int i; |
412 | |
853 | |
413 | for (i = 0; i < eventcnt; ++i) |
854 | for (i = 0; i < eventcnt; ++i) |
414 | ev_feed_event (EV_A_ events [i], type); |
855 | ev_feed_event (EV_A_ events [i], type); |
415 | } |
856 | } |
416 | |
857 | |
|
|
858 | /*****************************************************************************/ |
|
|
859 | |
417 | inline void |
860 | inline_speed void |
418 | fd_event (EV_P_ int fd, int revents) |
861 | fd_event_nc (EV_P_ int fd, int revents) |
419 | { |
862 | { |
420 | ANFD *anfd = anfds + fd; |
863 | ANFD *anfd = anfds + fd; |
421 | ev_io *w; |
864 | ev_io *w; |
422 | |
865 | |
423 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
866 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
427 | if (ev) |
870 | if (ev) |
428 | ev_feed_event (EV_A_ (W)w, ev); |
871 | ev_feed_event (EV_A_ (W)w, ev); |
429 | } |
872 | } |
430 | } |
873 | } |
431 | |
874 | |
|
|
875 | /* do not submit kernel events for fds that have reify set */ |
|
|
876 | /* because that means they changed while we were polling for new events */ |
|
|
877 | inline_speed void |
|
|
878 | fd_event (EV_P_ int fd, int revents) |
|
|
879 | { |
|
|
880 | ANFD *anfd = anfds + fd; |
|
|
881 | |
|
|
882 | if (expect_true (!anfd->reify)) |
|
|
883 | fd_event_nc (EV_A_ fd, revents); |
|
|
884 | } |
|
|
885 | |
432 | void |
886 | void |
433 | ev_feed_fd_event (EV_P_ int fd, int revents) |
887 | ev_feed_fd_event (EV_P_ int fd, int revents) |
434 | { |
888 | { |
|
|
889 | if (fd >= 0 && fd < anfdmax) |
435 | fd_event (EV_A_ fd, revents); |
890 | fd_event_nc (EV_A_ fd, revents); |
436 | } |
891 | } |
437 | |
892 | |
438 | /*****************************************************************************/ |
893 | /* make sure the external fd watch events are in-sync */ |
439 | |
894 | /* with the kernel/libev internal state */ |
440 | inline void |
895 | inline_size void |
441 | fd_reify (EV_P) |
896 | fd_reify (EV_P) |
442 | { |
897 | { |
443 | int i; |
898 | int i; |
444 | |
899 | |
445 | for (i = 0; i < fdchangecnt; ++i) |
900 | for (i = 0; i < fdchangecnt; ++i) |
446 | { |
901 | { |
447 | int fd = fdchanges [i]; |
902 | int fd = fdchanges [i]; |
448 | ANFD *anfd = anfds + fd; |
903 | ANFD *anfd = anfds + fd; |
449 | ev_io *w; |
904 | ev_io *w; |
450 | |
905 | |
451 | int events = 0; |
906 | unsigned char events = 0; |
452 | |
907 | |
453 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
908 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
454 | events |= w->events; |
909 | events |= (unsigned char)w->events; |
455 | |
910 | |
456 | #if EV_SELECT_IS_WINSOCKET |
911 | #if EV_SELECT_IS_WINSOCKET |
457 | if (events) |
912 | if (events) |
458 | { |
913 | { |
459 | unsigned long argp; |
914 | unsigned long arg; |
460 | anfd->handle = _get_osfhandle (fd); |
915 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
461 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
916 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
462 | } |
917 | } |
463 | #endif |
918 | #endif |
464 | |
919 | |
|
|
920 | { |
|
|
921 | unsigned char o_events = anfd->events; |
|
|
922 | unsigned char o_reify = anfd->reify; |
|
|
923 | |
465 | anfd->reify = 0; |
924 | anfd->reify = 0; |
466 | |
|
|
467 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
468 | anfd->events = events; |
925 | anfd->events = events; |
|
|
926 | |
|
|
927 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
928 | backend_modify (EV_A_ fd, o_events, events); |
|
|
929 | } |
469 | } |
930 | } |
470 | |
931 | |
471 | fdchangecnt = 0; |
932 | fdchangecnt = 0; |
472 | } |
933 | } |
473 | |
934 | |
474 | static void |
935 | /* something about the given fd changed */ |
|
|
936 | inline_size void |
475 | fd_change (EV_P_ int fd) |
937 | fd_change (EV_P_ int fd, int flags) |
476 | { |
938 | { |
477 | if (expect_false (anfds [fd].reify)) |
939 | unsigned char reify = anfds [fd].reify; |
478 | return; |
|
|
479 | |
|
|
480 | anfds [fd].reify = 1; |
940 | anfds [fd].reify |= flags; |
481 | |
941 | |
|
|
942 | if (expect_true (!reify)) |
|
|
943 | { |
482 | ++fdchangecnt; |
944 | ++fdchangecnt; |
483 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
945 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
484 | fdchanges [fdchangecnt - 1] = fd; |
946 | fdchanges [fdchangecnt - 1] = fd; |
|
|
947 | } |
485 | } |
948 | } |
486 | |
949 | |
487 | static void |
950 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
951 | inline_speed void |
488 | fd_kill (EV_P_ int fd) |
952 | fd_kill (EV_P_ int fd) |
489 | { |
953 | { |
490 | ev_io *w; |
954 | ev_io *w; |
491 | |
955 | |
492 | while ((w = (ev_io *)anfds [fd].head)) |
956 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
494 | ev_io_stop (EV_A_ w); |
958 | ev_io_stop (EV_A_ w); |
495 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
959 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
496 | } |
960 | } |
497 | } |
961 | } |
498 | |
962 | |
|
|
963 | /* check whether the given fd is atcually valid, for error recovery */ |
499 | inline int |
964 | inline_size int |
500 | fd_valid (int fd) |
965 | fd_valid (int fd) |
501 | { |
966 | { |
502 | #ifdef _WIN32 |
967 | #ifdef _WIN32 |
503 | return _get_osfhandle (fd) != -1; |
968 | return _get_osfhandle (fd) != -1; |
504 | #else |
969 | #else |
505 | return fcntl (fd, F_GETFD) != -1; |
970 | return fcntl (fd, F_GETFD) != -1; |
506 | #endif |
971 | #endif |
507 | } |
972 | } |
508 | |
973 | |
509 | /* called on EBADF to verify fds */ |
974 | /* called on EBADF to verify fds */ |
510 | static void |
975 | static void noinline |
511 | fd_ebadf (EV_P) |
976 | fd_ebadf (EV_P) |
512 | { |
977 | { |
513 | int fd; |
978 | int fd; |
514 | |
979 | |
515 | for (fd = 0; fd < anfdmax; ++fd) |
980 | for (fd = 0; fd < anfdmax; ++fd) |
516 | if (anfds [fd].events) |
981 | if (anfds [fd].events) |
517 | if (!fd_valid (fd) == -1 && errno == EBADF) |
982 | if (!fd_valid (fd) && errno == EBADF) |
518 | fd_kill (EV_A_ fd); |
983 | fd_kill (EV_A_ fd); |
519 | } |
984 | } |
520 | |
985 | |
521 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
986 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
522 | static void |
987 | static void noinline |
523 | fd_enomem (EV_P) |
988 | fd_enomem (EV_P) |
524 | { |
989 | { |
525 | int fd; |
990 | int fd; |
526 | |
991 | |
527 | for (fd = anfdmax; fd--; ) |
992 | for (fd = anfdmax; fd--; ) |
528 | if (anfds [fd].events) |
993 | if (anfds [fd].events) |
529 | { |
994 | { |
530 | fd_kill (EV_A_ fd); |
995 | fd_kill (EV_A_ fd); |
531 | return; |
996 | break; |
532 | } |
997 | } |
533 | } |
998 | } |
534 | |
999 | |
535 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
1000 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
536 | static void |
1001 | static void noinline |
537 | fd_rearm_all (EV_P) |
1002 | fd_rearm_all (EV_P) |
538 | { |
1003 | { |
539 | int fd; |
1004 | int fd; |
540 | |
1005 | |
541 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
542 | for (fd = 0; fd < anfdmax; ++fd) |
1006 | for (fd = 0; fd < anfdmax; ++fd) |
543 | if (anfds [fd].events) |
1007 | if (anfds [fd].events) |
544 | { |
1008 | { |
545 | anfds [fd].events = 0; |
1009 | anfds [fd].events = 0; |
546 | fd_change (EV_A_ fd); |
1010 | anfds [fd].emask = 0; |
|
|
1011 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
547 | } |
1012 | } |
548 | } |
1013 | } |
549 | |
1014 | |
550 | /*****************************************************************************/ |
1015 | /*****************************************************************************/ |
551 | |
1016 | |
552 | static void |
1017 | /* |
553 | upheap (WT *heap, int k) |
1018 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
554 | { |
1019 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
555 | WT w = heap [k]; |
1020 | * the branching factor of the d-tree. |
|
|
1021 | */ |
556 | |
1022 | |
557 | while (k && heap [k >> 1]->at > w->at) |
1023 | /* |
558 | { |
1024 | * at the moment we allow libev the luxury of two heaps, |
559 | heap [k] = heap [k >> 1]; |
1025 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
560 | ((W)heap [k])->active = k + 1; |
1026 | * which is more cache-efficient. |
561 | k >>= 1; |
1027 | * the difference is about 5% with 50000+ watchers. |
562 | } |
1028 | */ |
|
|
1029 | #if EV_USE_4HEAP |
563 | |
1030 | |
564 | heap [k] = w; |
1031 | #define DHEAP 4 |
565 | ((W)heap [k])->active = k + 1; |
1032 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1033 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1034 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
566 | |
1035 | |
567 | } |
1036 | /* away from the root */ |
568 | |
1037 | inline_speed void |
569 | static void |
|
|
570 | downheap (WT *heap, int N, int k) |
1038 | downheap (ANHE *heap, int N, int k) |
571 | { |
1039 | { |
572 | WT w = heap [k]; |
1040 | ANHE he = heap [k]; |
|
|
1041 | ANHE *E = heap + N + HEAP0; |
573 | |
1042 | |
574 | while (k < (N >> 1)) |
1043 | for (;;) |
575 | { |
1044 | { |
576 | int j = k << 1; |
1045 | ev_tstamp minat; |
|
|
1046 | ANHE *minpos; |
|
|
1047 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
577 | |
1048 | |
578 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
1049 | /* find minimum child */ |
|
|
1050 | if (expect_true (pos + DHEAP - 1 < E)) |
579 | ++j; |
1051 | { |
580 | |
1052 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
581 | if (w->at <= heap [j]->at) |
1053 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1054 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1055 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1056 | } |
|
|
1057 | else if (pos < E) |
|
|
1058 | { |
|
|
1059 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1060 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1061 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1062 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1063 | } |
|
|
1064 | else |
582 | break; |
1065 | break; |
583 | |
1066 | |
|
|
1067 | if (ANHE_at (he) <= minat) |
|
|
1068 | break; |
|
|
1069 | |
|
|
1070 | heap [k] = *minpos; |
|
|
1071 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1072 | |
|
|
1073 | k = minpos - heap; |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | heap [k] = he; |
|
|
1077 | ev_active (ANHE_w (he)) = k; |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | #else /* 4HEAP */ |
|
|
1081 | |
|
|
1082 | #define HEAP0 1 |
|
|
1083 | #define HPARENT(k) ((k) >> 1) |
|
|
1084 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1085 | |
|
|
1086 | /* away from the root */ |
|
|
1087 | inline_speed void |
|
|
1088 | downheap (ANHE *heap, int N, int k) |
|
|
1089 | { |
|
|
1090 | ANHE he = heap [k]; |
|
|
1091 | |
|
|
1092 | for (;;) |
|
|
1093 | { |
|
|
1094 | int c = k << 1; |
|
|
1095 | |
|
|
1096 | if (c >= N + HEAP0) |
|
|
1097 | break; |
|
|
1098 | |
|
|
1099 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1100 | ? 1 : 0; |
|
|
1101 | |
|
|
1102 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1103 | break; |
|
|
1104 | |
584 | heap [k] = heap [j]; |
1105 | heap [k] = heap [c]; |
585 | ((W)heap [k])->active = k + 1; |
1106 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1107 | |
586 | k = j; |
1108 | k = c; |
587 | } |
1109 | } |
588 | |
1110 | |
589 | heap [k] = w; |
1111 | heap [k] = he; |
590 | ((W)heap [k])->active = k + 1; |
1112 | ev_active (ANHE_w (he)) = k; |
591 | } |
1113 | } |
|
|
1114 | #endif |
592 | |
1115 | |
|
|
1116 | /* towards the root */ |
|
|
1117 | inline_speed void |
|
|
1118 | upheap (ANHE *heap, int k) |
|
|
1119 | { |
|
|
1120 | ANHE he = heap [k]; |
|
|
1121 | |
|
|
1122 | for (;;) |
|
|
1123 | { |
|
|
1124 | int p = HPARENT (k); |
|
|
1125 | |
|
|
1126 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1127 | break; |
|
|
1128 | |
|
|
1129 | heap [k] = heap [p]; |
|
|
1130 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1131 | k = p; |
|
|
1132 | } |
|
|
1133 | |
|
|
1134 | heap [k] = he; |
|
|
1135 | ev_active (ANHE_w (he)) = k; |
|
|
1136 | } |
|
|
1137 | |
|
|
1138 | /* move an element suitably so it is in a correct place */ |
593 | inline void |
1139 | inline_size void |
594 | adjustheap (WT *heap, int N, int k) |
1140 | adjustheap (ANHE *heap, int N, int k) |
595 | { |
1141 | { |
|
|
1142 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
596 | upheap (heap, k); |
1143 | upheap (heap, k); |
|
|
1144 | else |
597 | downheap (heap, N, k); |
1145 | downheap (heap, N, k); |
|
|
1146 | } |
|
|
1147 | |
|
|
1148 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1149 | inline_size void |
|
|
1150 | reheap (ANHE *heap, int N) |
|
|
1151 | { |
|
|
1152 | int i; |
|
|
1153 | |
|
|
1154 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1155 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1156 | for (i = 0; i < N; ++i) |
|
|
1157 | upheap (heap, i + HEAP0); |
598 | } |
1158 | } |
599 | |
1159 | |
600 | /*****************************************************************************/ |
1160 | /*****************************************************************************/ |
601 | |
1161 | |
|
|
1162 | /* associate signal watchers to a signal signal */ |
602 | typedef struct |
1163 | typedef struct |
603 | { |
1164 | { |
|
|
1165 | EV_ATOMIC_T pending; |
|
|
1166 | #if EV_MULTIPLICITY |
|
|
1167 | EV_P; |
|
|
1168 | #endif |
604 | WL head; |
1169 | WL head; |
605 | sig_atomic_t volatile gotsig; |
|
|
606 | } ANSIG; |
1170 | } ANSIG; |
607 | |
1171 | |
608 | static ANSIG *signals; |
1172 | static ANSIG signals [EV_NSIG - 1]; |
609 | static int signalmax; |
|
|
610 | |
1173 | |
611 | static int sigpipe [2]; |
1174 | /*****************************************************************************/ |
612 | static sig_atomic_t volatile gotsig; |
|
|
613 | static ev_io sigev; |
|
|
614 | |
1175 | |
615 | static void |
1176 | /* used to prepare libev internal fd's */ |
616 | signals_init (ANSIG *base, int count) |
1177 | /* this is not fork-safe */ |
617 | { |
1178 | inline_speed void |
618 | while (count--) |
|
|
619 | { |
|
|
620 | base->head = 0; |
|
|
621 | base->gotsig = 0; |
|
|
622 | |
|
|
623 | ++base; |
|
|
624 | } |
|
|
625 | } |
|
|
626 | |
|
|
627 | static void |
|
|
628 | sighandler (int signum) |
|
|
629 | { |
|
|
630 | #if _WIN32 |
|
|
631 | signal (signum, sighandler); |
|
|
632 | #endif |
|
|
633 | |
|
|
634 | signals [signum - 1].gotsig = 1; |
|
|
635 | |
|
|
636 | if (!gotsig) |
|
|
637 | { |
|
|
638 | int old_errno = errno; |
|
|
639 | gotsig = 1; |
|
|
640 | write (sigpipe [1], &signum, 1); |
|
|
641 | errno = old_errno; |
|
|
642 | } |
|
|
643 | } |
|
|
644 | |
|
|
645 | void |
|
|
646 | ev_feed_signal_event (EV_P_ int signum) |
|
|
647 | { |
|
|
648 | WL w; |
|
|
649 | |
|
|
650 | #if EV_MULTIPLICITY |
|
|
651 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
652 | #endif |
|
|
653 | |
|
|
654 | --signum; |
|
|
655 | |
|
|
656 | if (signum < 0 || signum >= signalmax) |
|
|
657 | return; |
|
|
658 | |
|
|
659 | signals [signum].gotsig = 0; |
|
|
660 | |
|
|
661 | for (w = signals [signum].head; w; w = w->next) |
|
|
662 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
663 | } |
|
|
664 | |
|
|
665 | static void |
|
|
666 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
667 | { |
|
|
668 | int signum; |
|
|
669 | |
|
|
670 | read (sigpipe [0], &revents, 1); |
|
|
671 | gotsig = 0; |
|
|
672 | |
|
|
673 | for (signum = signalmax; signum--; ) |
|
|
674 | if (signals [signum].gotsig) |
|
|
675 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
676 | } |
|
|
677 | |
|
|
678 | static void |
|
|
679 | fd_intern (int fd) |
1179 | fd_intern (int fd) |
680 | { |
1180 | { |
681 | #ifdef _WIN32 |
1181 | #ifdef _WIN32 |
682 | int arg = 1; |
1182 | unsigned long arg = 1; |
683 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1183 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
684 | #else |
1184 | #else |
685 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1185 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
686 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1186 | fcntl (fd, F_SETFL, O_NONBLOCK); |
687 | #endif |
1187 | #endif |
688 | } |
1188 | } |
689 | |
1189 | |
|
|
1190 | static void noinline |
|
|
1191 | evpipe_init (EV_P) |
|
|
1192 | { |
|
|
1193 | if (!ev_is_active (&pipe_w)) |
|
|
1194 | { |
|
|
1195 | #if EV_USE_EVENTFD |
|
|
1196 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1197 | if (evfd < 0 && errno == EINVAL) |
|
|
1198 | evfd = eventfd (0, 0); |
|
|
1199 | |
|
|
1200 | if (evfd >= 0) |
|
|
1201 | { |
|
|
1202 | evpipe [0] = -1; |
|
|
1203 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1204 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1205 | } |
|
|
1206 | else |
|
|
1207 | #endif |
|
|
1208 | { |
|
|
1209 | while (pipe (evpipe)) |
|
|
1210 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1211 | |
|
|
1212 | fd_intern (evpipe [0]); |
|
|
1213 | fd_intern (evpipe [1]); |
|
|
1214 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1215 | } |
|
|
1216 | |
|
|
1217 | ev_io_start (EV_A_ &pipe_w); |
|
|
1218 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1219 | } |
|
|
1220 | } |
|
|
1221 | |
|
|
1222 | inline_size void |
|
|
1223 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1224 | { |
|
|
1225 | if (!*flag) |
|
|
1226 | { |
|
|
1227 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1228 | |
|
|
1229 | *flag = 1; |
|
|
1230 | |
|
|
1231 | #if EV_USE_EVENTFD |
|
|
1232 | if (evfd >= 0) |
|
|
1233 | { |
|
|
1234 | uint64_t counter = 1; |
|
|
1235 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1236 | } |
|
|
1237 | else |
|
|
1238 | #endif |
|
|
1239 | write (evpipe [1], &old_errno, 1); |
|
|
1240 | |
|
|
1241 | errno = old_errno; |
|
|
1242 | } |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | /* called whenever the libev signal pipe */ |
|
|
1246 | /* got some events (signal, async) */ |
690 | static void |
1247 | static void |
691 | siginit (EV_P) |
1248 | pipecb (EV_P_ ev_io *iow, int revents) |
692 | { |
1249 | { |
693 | fd_intern (sigpipe [0]); |
1250 | int i; |
694 | fd_intern (sigpipe [1]); |
|
|
695 | |
1251 | |
696 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
1252 | #if EV_USE_EVENTFD |
697 | ev_io_start (EV_A_ &sigev); |
1253 | if (evfd >= 0) |
698 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1254 | { |
|
|
1255 | uint64_t counter; |
|
|
1256 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1257 | } |
|
|
1258 | else |
|
|
1259 | #endif |
|
|
1260 | { |
|
|
1261 | char dummy; |
|
|
1262 | read (evpipe [0], &dummy, 1); |
|
|
1263 | } |
|
|
1264 | |
|
|
1265 | if (sig_pending) |
|
|
1266 | { |
|
|
1267 | sig_pending = 0; |
|
|
1268 | |
|
|
1269 | for (i = EV_NSIG - 1; i--; ) |
|
|
1270 | if (expect_false (signals [i].pending)) |
|
|
1271 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1272 | } |
|
|
1273 | |
|
|
1274 | #if EV_ASYNC_ENABLE |
|
|
1275 | if (async_pending) |
|
|
1276 | { |
|
|
1277 | async_pending = 0; |
|
|
1278 | |
|
|
1279 | for (i = asynccnt; i--; ) |
|
|
1280 | if (asyncs [i]->sent) |
|
|
1281 | { |
|
|
1282 | asyncs [i]->sent = 0; |
|
|
1283 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1284 | } |
|
|
1285 | } |
|
|
1286 | #endif |
699 | } |
1287 | } |
700 | |
1288 | |
701 | /*****************************************************************************/ |
1289 | /*****************************************************************************/ |
702 | |
1290 | |
|
|
1291 | static void |
|
|
1292 | ev_sighandler (int signum) |
|
|
1293 | { |
|
|
1294 | #if EV_MULTIPLICITY |
|
|
1295 | EV_P = signals [signum - 1].loop; |
|
|
1296 | #endif |
|
|
1297 | |
|
|
1298 | #if _WIN32 |
|
|
1299 | signal (signum, ev_sighandler); |
|
|
1300 | #endif |
|
|
1301 | |
|
|
1302 | signals [signum - 1].pending = 1; |
|
|
1303 | evpipe_write (EV_A_ &sig_pending); |
|
|
1304 | } |
|
|
1305 | |
|
|
1306 | void noinline |
|
|
1307 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1308 | { |
|
|
1309 | WL w; |
|
|
1310 | |
|
|
1311 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1312 | return; |
|
|
1313 | |
|
|
1314 | --signum; |
|
|
1315 | |
|
|
1316 | #if EV_MULTIPLICITY |
|
|
1317 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
1318 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
1319 | |
|
|
1320 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
1321 | return; |
|
|
1322 | #endif |
|
|
1323 | |
|
|
1324 | signals [signum].pending = 0; |
|
|
1325 | |
|
|
1326 | for (w = signals [signum].head; w; w = w->next) |
|
|
1327 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | #if EV_USE_SIGNALFD |
|
|
1331 | static void |
|
|
1332 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
1333 | { |
|
|
1334 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
1335 | |
|
|
1336 | for (;;) |
|
|
1337 | { |
|
|
1338 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
1339 | |
|
|
1340 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
1341 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1342 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
1343 | |
|
|
1344 | if (res < (ssize_t)sizeof (si)) |
|
|
1345 | break; |
|
|
1346 | } |
|
|
1347 | } |
|
|
1348 | #endif |
|
|
1349 | |
|
|
1350 | /*****************************************************************************/ |
|
|
1351 | |
703 | static ev_child *childs [PID_HASHSIZE]; |
1352 | static WL childs [EV_PID_HASHSIZE]; |
704 | |
1353 | |
705 | #ifndef _WIN32 |
1354 | #ifndef _WIN32 |
706 | |
1355 | |
707 | static ev_signal childev; |
1356 | static ev_signal childev; |
|
|
1357 | |
|
|
1358 | #ifndef WIFCONTINUED |
|
|
1359 | # define WIFCONTINUED(status) 0 |
|
|
1360 | #endif |
|
|
1361 | |
|
|
1362 | /* handle a single child status event */ |
|
|
1363 | inline_speed void |
|
|
1364 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1365 | { |
|
|
1366 | ev_child *w; |
|
|
1367 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1368 | |
|
|
1369 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1370 | { |
|
|
1371 | if ((w->pid == pid || !w->pid) |
|
|
1372 | && (!traced || (w->flags & 1))) |
|
|
1373 | { |
|
|
1374 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1375 | w->rpid = pid; |
|
|
1376 | w->rstatus = status; |
|
|
1377 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1378 | } |
|
|
1379 | } |
|
|
1380 | } |
708 | |
1381 | |
709 | #ifndef WCONTINUED |
1382 | #ifndef WCONTINUED |
710 | # define WCONTINUED 0 |
1383 | # define WCONTINUED 0 |
711 | #endif |
1384 | #endif |
712 | |
1385 | |
713 | static void |
1386 | /* called on sigchld etc., calls waitpid */ |
714 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
715 | { |
|
|
716 | ev_child *w; |
|
|
717 | |
|
|
718 | for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
719 | if (w->pid == pid || !w->pid) |
|
|
720 | { |
|
|
721 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
722 | w->rpid = pid; |
|
|
723 | w->rstatus = status; |
|
|
724 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
725 | } |
|
|
726 | } |
|
|
727 | |
|
|
728 | static void |
1387 | static void |
729 | childcb (EV_P_ ev_signal *sw, int revents) |
1388 | childcb (EV_P_ ev_signal *sw, int revents) |
730 | { |
1389 | { |
731 | int pid, status; |
1390 | int pid, status; |
732 | |
1391 | |
|
|
1392 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
733 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1393 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
734 | { |
1394 | if (!WCONTINUED |
|
|
1395 | || errno != EINVAL |
|
|
1396 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1397 | return; |
|
|
1398 | |
735 | /* make sure we are called again until all childs have been reaped */ |
1399 | /* make sure we are called again until all children have been reaped */ |
736 | /* we need to do it this way so that the callback gets called before we continue */ |
1400 | /* we need to do it this way so that the callback gets called before we continue */ |
737 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1401 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
738 | |
1402 | |
739 | child_reap (EV_A_ sw, pid, pid, status); |
1403 | child_reap (EV_A_ pid, pid, status); |
|
|
1404 | if (EV_PID_HASHSIZE > 1) |
740 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1405 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
741 | } |
|
|
742 | } |
1406 | } |
743 | |
1407 | |
744 | #endif |
1408 | #endif |
745 | |
1409 | |
746 | /*****************************************************************************/ |
1410 | /*****************************************************************************/ |
… | |
… | |
772 | { |
1436 | { |
773 | return EV_VERSION_MINOR; |
1437 | return EV_VERSION_MINOR; |
774 | } |
1438 | } |
775 | |
1439 | |
776 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1440 | /* return true if we are running with elevated privileges and should ignore env variables */ |
777 | static int |
1441 | int inline_size |
778 | enable_secure (void) |
1442 | enable_secure (void) |
779 | { |
1443 | { |
780 | #ifdef _WIN32 |
1444 | #ifdef _WIN32 |
781 | return 0; |
1445 | return 0; |
782 | #else |
1446 | #else |
… | |
… | |
808 | /* kqueue is borked on everything but netbsd apparently */ |
1472 | /* kqueue is borked on everything but netbsd apparently */ |
809 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
1473 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
810 | flags &= ~EVBACKEND_KQUEUE; |
1474 | flags &= ~EVBACKEND_KQUEUE; |
811 | #endif |
1475 | #endif |
812 | #ifdef __APPLE__ |
1476 | #ifdef __APPLE__ |
813 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
1477 | /* only select works correctly on that "unix-certified" platform */ |
814 | flags &= ~EVBACKEND_POLL; |
1478 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1479 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
815 | #endif |
1480 | #endif |
816 | |
1481 | |
817 | return flags; |
1482 | return flags; |
818 | } |
1483 | } |
819 | |
1484 | |
820 | unsigned int |
1485 | unsigned int |
821 | ev_embeddable_backends (void) |
1486 | ev_embeddable_backends (void) |
822 | { |
1487 | { |
823 | return EVBACKEND_EPOLL |
1488 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
824 | | EVBACKEND_KQUEUE |
1489 | |
825 | | EVBACKEND_PORT; |
1490 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1491 | /* please fix it and tell me how to detect the fix */ |
|
|
1492 | flags &= ~EVBACKEND_EPOLL; |
|
|
1493 | |
|
|
1494 | return flags; |
826 | } |
1495 | } |
827 | |
1496 | |
828 | unsigned int |
1497 | unsigned int |
829 | ev_backend (EV_P) |
1498 | ev_backend (EV_P) |
830 | { |
1499 | { |
831 | return backend; |
1500 | return backend; |
832 | } |
1501 | } |
833 | |
1502 | |
834 | static void |
1503 | #if EV_MINIMAL < 2 |
|
|
1504 | unsigned int |
|
|
1505 | ev_loop_count (EV_P) |
|
|
1506 | { |
|
|
1507 | return loop_count; |
|
|
1508 | } |
|
|
1509 | |
|
|
1510 | unsigned int |
|
|
1511 | ev_loop_depth (EV_P) |
|
|
1512 | { |
|
|
1513 | return loop_depth; |
|
|
1514 | } |
|
|
1515 | |
|
|
1516 | void |
|
|
1517 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1518 | { |
|
|
1519 | io_blocktime = interval; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | void |
|
|
1523 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1524 | { |
|
|
1525 | timeout_blocktime = interval; |
|
|
1526 | } |
|
|
1527 | |
|
|
1528 | void |
|
|
1529 | ev_set_userdata (EV_P_ void *data) |
|
|
1530 | { |
|
|
1531 | userdata = data; |
|
|
1532 | } |
|
|
1533 | |
|
|
1534 | void * |
|
|
1535 | ev_userdata (EV_P) |
|
|
1536 | { |
|
|
1537 | return userdata; |
|
|
1538 | } |
|
|
1539 | |
|
|
1540 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1541 | { |
|
|
1542 | invoke_cb = invoke_pending_cb; |
|
|
1543 | } |
|
|
1544 | |
|
|
1545 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1546 | { |
|
|
1547 | release_cb = release; |
|
|
1548 | acquire_cb = acquire; |
|
|
1549 | } |
|
|
1550 | #endif |
|
|
1551 | |
|
|
1552 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1553 | static void noinline |
835 | loop_init (EV_P_ unsigned int flags) |
1554 | loop_init (EV_P_ unsigned int flags) |
836 | { |
1555 | { |
837 | if (!backend) |
1556 | if (!backend) |
838 | { |
1557 | { |
|
|
1558 | #if EV_USE_REALTIME |
|
|
1559 | if (!have_realtime) |
|
|
1560 | { |
|
|
1561 | struct timespec ts; |
|
|
1562 | |
|
|
1563 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1564 | have_realtime = 1; |
|
|
1565 | } |
|
|
1566 | #endif |
|
|
1567 | |
839 | #if EV_USE_MONOTONIC |
1568 | #if EV_USE_MONOTONIC |
|
|
1569 | if (!have_monotonic) |
840 | { |
1570 | { |
841 | struct timespec ts; |
1571 | struct timespec ts; |
|
|
1572 | |
842 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1573 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
843 | have_monotonic = 1; |
1574 | have_monotonic = 1; |
844 | } |
1575 | } |
845 | #endif |
1576 | #endif |
846 | |
1577 | |
847 | ev_rt_now = ev_time (); |
1578 | /* pid check not overridable via env */ |
848 | mn_now = get_clock (); |
1579 | #ifndef _WIN32 |
849 | now_floor = mn_now; |
1580 | if (flags & EVFLAG_FORKCHECK) |
850 | rtmn_diff = ev_rt_now - mn_now; |
1581 | curpid = getpid (); |
|
|
1582 | #endif |
851 | |
1583 | |
852 | if (!(flags & EVFLAG_NOENV) |
1584 | if (!(flags & EVFLAG_NOENV) |
853 | && !enable_secure () |
1585 | && !enable_secure () |
854 | && getenv ("LIBEV_FLAGS")) |
1586 | && getenv ("LIBEV_FLAGS")) |
855 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1587 | flags = atoi (getenv ("LIBEV_FLAGS")); |
856 | |
1588 | |
|
|
1589 | ev_rt_now = ev_time (); |
|
|
1590 | mn_now = get_clock (); |
|
|
1591 | now_floor = mn_now; |
|
|
1592 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1593 | #if EV_MINIMAL < 2 |
|
|
1594 | invoke_cb = ev_invoke_pending; |
|
|
1595 | #endif |
|
|
1596 | |
|
|
1597 | io_blocktime = 0.; |
|
|
1598 | timeout_blocktime = 0.; |
|
|
1599 | backend = 0; |
|
|
1600 | backend_fd = -1; |
|
|
1601 | sig_pending = 0; |
|
|
1602 | #if EV_ASYNC_ENABLE |
|
|
1603 | async_pending = 0; |
|
|
1604 | #endif |
|
|
1605 | #if EV_USE_INOTIFY |
|
|
1606 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
1607 | #endif |
|
|
1608 | #if EV_USE_SIGNALFD |
|
|
1609 | sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; |
|
|
1610 | #endif |
|
|
1611 | |
857 | if (!(flags & 0x0000ffffUL)) |
1612 | if (!(flags & 0x0000ffffU)) |
858 | flags |= ev_recommended_backends (); |
1613 | flags |= ev_recommended_backends (); |
859 | |
1614 | |
860 | backend = 0; |
|
|
861 | #if EV_USE_PORT |
1615 | #if EV_USE_PORT |
862 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1616 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
863 | #endif |
1617 | #endif |
864 | #if EV_USE_KQUEUE |
1618 | #if EV_USE_KQUEUE |
865 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1619 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
872 | #endif |
1626 | #endif |
873 | #if EV_USE_SELECT |
1627 | #if EV_USE_SELECT |
874 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1628 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
875 | #endif |
1629 | #endif |
876 | |
1630 | |
|
|
1631 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1632 | |
877 | ev_init (&sigev, sigcb); |
1633 | ev_init (&pipe_w, pipecb); |
878 | ev_set_priority (&sigev, EV_MAXPRI); |
1634 | ev_set_priority (&pipe_w, EV_MAXPRI); |
879 | } |
1635 | } |
880 | } |
1636 | } |
881 | |
1637 | |
882 | static void |
1638 | /* free up a loop structure */ |
|
|
1639 | static void noinline |
883 | loop_destroy (EV_P) |
1640 | loop_destroy (EV_P) |
884 | { |
1641 | { |
885 | int i; |
1642 | int i; |
|
|
1643 | |
|
|
1644 | if (ev_is_active (&pipe_w)) |
|
|
1645 | { |
|
|
1646 | /*ev_ref (EV_A);*/ |
|
|
1647 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
1648 | |
|
|
1649 | #if EV_USE_EVENTFD |
|
|
1650 | if (evfd >= 0) |
|
|
1651 | close (evfd); |
|
|
1652 | #endif |
|
|
1653 | |
|
|
1654 | if (evpipe [0] >= 0) |
|
|
1655 | { |
|
|
1656 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1657 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1658 | } |
|
|
1659 | } |
|
|
1660 | |
|
|
1661 | #if EV_USE_SIGNALFD |
|
|
1662 | if (ev_is_active (&sigfd_w)) |
|
|
1663 | close (sigfd); |
|
|
1664 | #endif |
|
|
1665 | |
|
|
1666 | #if EV_USE_INOTIFY |
|
|
1667 | if (fs_fd >= 0) |
|
|
1668 | close (fs_fd); |
|
|
1669 | #endif |
|
|
1670 | |
|
|
1671 | if (backend_fd >= 0) |
|
|
1672 | close (backend_fd); |
886 | |
1673 | |
887 | #if EV_USE_PORT |
1674 | #if EV_USE_PORT |
888 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1675 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
889 | #endif |
1676 | #endif |
890 | #if EV_USE_KQUEUE |
1677 | #if EV_USE_KQUEUE |
… | |
… | |
899 | #if EV_USE_SELECT |
1686 | #if EV_USE_SELECT |
900 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
1687 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
901 | #endif |
1688 | #endif |
902 | |
1689 | |
903 | for (i = NUMPRI; i--; ) |
1690 | for (i = NUMPRI; i--; ) |
|
|
1691 | { |
904 | array_free (pending, [i]); |
1692 | array_free (pending, [i]); |
|
|
1693 | #if EV_IDLE_ENABLE |
|
|
1694 | array_free (idle, [i]); |
|
|
1695 | #endif |
|
|
1696 | } |
|
|
1697 | |
|
|
1698 | ev_free (anfds); anfds = 0; anfdmax = 0; |
905 | |
1699 | |
906 | /* have to use the microsoft-never-gets-it-right macro */ |
1700 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1701 | array_free (rfeed, EMPTY); |
907 | array_free (fdchange, EMPTY0); |
1702 | array_free (fdchange, EMPTY); |
908 | array_free (timer, EMPTY0); |
1703 | array_free (timer, EMPTY); |
909 | #if EV_PERIODICS |
1704 | #if EV_PERIODIC_ENABLE |
910 | array_free (periodic, EMPTY0); |
1705 | array_free (periodic, EMPTY); |
911 | #endif |
1706 | #endif |
|
|
1707 | #if EV_FORK_ENABLE |
912 | array_free (idle, EMPTY0); |
1708 | array_free (fork, EMPTY); |
|
|
1709 | #endif |
913 | array_free (prepare, EMPTY0); |
1710 | array_free (prepare, EMPTY); |
914 | array_free (check, EMPTY0); |
1711 | array_free (check, EMPTY); |
|
|
1712 | #if EV_ASYNC_ENABLE |
|
|
1713 | array_free (async, EMPTY); |
|
|
1714 | #endif |
915 | |
1715 | |
916 | backend = 0; |
1716 | backend = 0; |
917 | } |
1717 | } |
918 | |
1718 | |
919 | static void |
1719 | #if EV_USE_INOTIFY |
|
|
1720 | inline_size void infy_fork (EV_P); |
|
|
1721 | #endif |
|
|
1722 | |
|
|
1723 | inline_size void |
920 | loop_fork (EV_P) |
1724 | loop_fork (EV_P) |
921 | { |
1725 | { |
922 | #if EV_USE_PORT |
1726 | #if EV_USE_PORT |
923 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1727 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
924 | #endif |
1728 | #endif |
… | |
… | |
926 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
1730 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
927 | #endif |
1731 | #endif |
928 | #if EV_USE_EPOLL |
1732 | #if EV_USE_EPOLL |
929 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
1733 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
930 | #endif |
1734 | #endif |
|
|
1735 | #if EV_USE_INOTIFY |
|
|
1736 | infy_fork (EV_A); |
|
|
1737 | #endif |
931 | |
1738 | |
932 | if (ev_is_active (&sigev)) |
1739 | if (ev_is_active (&pipe_w)) |
933 | { |
1740 | { |
934 | /* default loop */ |
1741 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1742 | /* while we modify the fd vars */ |
|
|
1743 | sig_pending = 1; |
|
|
1744 | #if EV_ASYNC_ENABLE |
|
|
1745 | async_pending = 1; |
|
|
1746 | #endif |
935 | |
1747 | |
936 | ev_ref (EV_A); |
1748 | ev_ref (EV_A); |
937 | ev_io_stop (EV_A_ &sigev); |
1749 | ev_io_stop (EV_A_ &pipe_w); |
938 | close (sigpipe [0]); |
|
|
939 | close (sigpipe [1]); |
|
|
940 | |
1750 | |
941 | while (pipe (sigpipe)) |
1751 | #if EV_USE_EVENTFD |
942 | syserr ("(libev) error creating pipe"); |
1752 | if (evfd >= 0) |
|
|
1753 | close (evfd); |
|
|
1754 | #endif |
943 | |
1755 | |
|
|
1756 | if (evpipe [0] >= 0) |
|
|
1757 | { |
|
|
1758 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1759 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1760 | } |
|
|
1761 | |
944 | siginit (EV_A); |
1762 | evpipe_init (EV_A); |
|
|
1763 | /* now iterate over everything, in case we missed something */ |
|
|
1764 | pipecb (EV_A_ &pipe_w, EV_READ); |
945 | } |
1765 | } |
946 | |
1766 | |
947 | postfork = 0; |
1767 | postfork = 0; |
948 | } |
1768 | } |
949 | |
1769 | |
950 | #if EV_MULTIPLICITY |
1770 | #if EV_MULTIPLICITY |
|
|
1771 | |
951 | struct ev_loop * |
1772 | struct ev_loop * |
952 | ev_loop_new (unsigned int flags) |
1773 | ev_loop_new (unsigned int flags) |
953 | { |
1774 | { |
954 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1775 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
955 | |
1776 | |
956 | memset (loop, 0, sizeof (struct ev_loop)); |
1777 | memset (EV_A, 0, sizeof (struct ev_loop)); |
957 | |
|
|
958 | loop_init (EV_A_ flags); |
1778 | loop_init (EV_A_ flags); |
959 | |
1779 | |
960 | if (ev_backend (EV_A)) |
1780 | if (ev_backend (EV_A)) |
961 | return loop; |
1781 | return EV_A; |
962 | |
1782 | |
963 | return 0; |
1783 | return 0; |
964 | } |
1784 | } |
965 | |
1785 | |
966 | void |
1786 | void |
… | |
… | |
971 | } |
1791 | } |
972 | |
1792 | |
973 | void |
1793 | void |
974 | ev_loop_fork (EV_P) |
1794 | ev_loop_fork (EV_P) |
975 | { |
1795 | { |
976 | postfork = 1; |
1796 | postfork = 1; /* must be in line with ev_default_fork */ |
977 | } |
1797 | } |
|
|
1798 | #endif /* multiplicity */ |
978 | |
1799 | |
|
|
1800 | #if EV_VERIFY |
|
|
1801 | static void noinline |
|
|
1802 | verify_watcher (EV_P_ W w) |
|
|
1803 | { |
|
|
1804 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1805 | |
|
|
1806 | if (w->pending) |
|
|
1807 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1808 | } |
|
|
1809 | |
|
|
1810 | static void noinline |
|
|
1811 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1812 | { |
|
|
1813 | int i; |
|
|
1814 | |
|
|
1815 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1816 | { |
|
|
1817 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1818 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1819 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1820 | |
|
|
1821 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1822 | } |
|
|
1823 | } |
|
|
1824 | |
|
|
1825 | static void noinline |
|
|
1826 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1827 | { |
|
|
1828 | while (cnt--) |
|
|
1829 | { |
|
|
1830 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1831 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1832 | } |
|
|
1833 | } |
|
|
1834 | #endif |
|
|
1835 | |
|
|
1836 | #if EV_MINIMAL < 2 |
|
|
1837 | void |
|
|
1838 | ev_loop_verify (EV_P) |
|
|
1839 | { |
|
|
1840 | #if EV_VERIFY |
|
|
1841 | int i; |
|
|
1842 | WL w; |
|
|
1843 | |
|
|
1844 | assert (activecnt >= -1); |
|
|
1845 | |
|
|
1846 | assert (fdchangemax >= fdchangecnt); |
|
|
1847 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1848 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1849 | |
|
|
1850 | assert (anfdmax >= 0); |
|
|
1851 | for (i = 0; i < anfdmax; ++i) |
|
|
1852 | for (w = anfds [i].head; w; w = w->next) |
|
|
1853 | { |
|
|
1854 | verify_watcher (EV_A_ (W)w); |
|
|
1855 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
1856 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
1857 | } |
|
|
1858 | |
|
|
1859 | assert (timermax >= timercnt); |
|
|
1860 | verify_heap (EV_A_ timers, timercnt); |
|
|
1861 | |
|
|
1862 | #if EV_PERIODIC_ENABLE |
|
|
1863 | assert (periodicmax >= periodiccnt); |
|
|
1864 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1865 | #endif |
|
|
1866 | |
|
|
1867 | for (i = NUMPRI; i--; ) |
|
|
1868 | { |
|
|
1869 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1870 | #if EV_IDLE_ENABLE |
|
|
1871 | assert (idleall >= 0); |
|
|
1872 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1873 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1874 | #endif |
|
|
1875 | } |
|
|
1876 | |
|
|
1877 | #if EV_FORK_ENABLE |
|
|
1878 | assert (forkmax >= forkcnt); |
|
|
1879 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1880 | #endif |
|
|
1881 | |
|
|
1882 | #if EV_ASYNC_ENABLE |
|
|
1883 | assert (asyncmax >= asynccnt); |
|
|
1884 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1885 | #endif |
|
|
1886 | |
|
|
1887 | assert (preparemax >= preparecnt); |
|
|
1888 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1889 | |
|
|
1890 | assert (checkmax >= checkcnt); |
|
|
1891 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1892 | |
|
|
1893 | # if 0 |
|
|
1894 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1895 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
1896 | # endif |
|
|
1897 | #endif |
|
|
1898 | } |
979 | #endif |
1899 | #endif |
980 | |
1900 | |
981 | #if EV_MULTIPLICITY |
1901 | #if EV_MULTIPLICITY |
982 | struct ev_loop * |
1902 | struct ev_loop * |
983 | ev_default_loop_init (unsigned int flags) |
1903 | ev_default_loop_init (unsigned int flags) |
984 | #else |
1904 | #else |
985 | int |
1905 | int |
986 | ev_default_loop (unsigned int flags) |
1906 | ev_default_loop (unsigned int flags) |
987 | #endif |
1907 | #endif |
988 | { |
1908 | { |
989 | if (sigpipe [0] == sigpipe [1]) |
|
|
990 | if (pipe (sigpipe)) |
|
|
991 | return 0; |
|
|
992 | |
|
|
993 | if (!ev_default_loop_ptr) |
1909 | if (!ev_default_loop_ptr) |
994 | { |
1910 | { |
995 | #if EV_MULTIPLICITY |
1911 | #if EV_MULTIPLICITY |
996 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1912 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
997 | #else |
1913 | #else |
998 | ev_default_loop_ptr = 1; |
1914 | ev_default_loop_ptr = 1; |
999 | #endif |
1915 | #endif |
1000 | |
1916 | |
1001 | loop_init (EV_A_ flags); |
1917 | loop_init (EV_A_ flags); |
1002 | |
1918 | |
1003 | if (ev_backend (EV_A)) |
1919 | if (ev_backend (EV_A)) |
1004 | { |
1920 | { |
1005 | siginit (EV_A); |
|
|
1006 | |
|
|
1007 | #ifndef _WIN32 |
1921 | #ifndef _WIN32 |
1008 | ev_signal_init (&childev, childcb, SIGCHLD); |
1922 | ev_signal_init (&childev, childcb, SIGCHLD); |
1009 | ev_set_priority (&childev, EV_MAXPRI); |
1923 | ev_set_priority (&childev, EV_MAXPRI); |
1010 | ev_signal_start (EV_A_ &childev); |
1924 | ev_signal_start (EV_A_ &childev); |
1011 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1925 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1020 | |
1934 | |
1021 | void |
1935 | void |
1022 | ev_default_destroy (void) |
1936 | ev_default_destroy (void) |
1023 | { |
1937 | { |
1024 | #if EV_MULTIPLICITY |
1938 | #if EV_MULTIPLICITY |
1025 | struct ev_loop *loop = ev_default_loop_ptr; |
1939 | EV_P = ev_default_loop_ptr; |
1026 | #endif |
1940 | #endif |
|
|
1941 | |
|
|
1942 | ev_default_loop_ptr = 0; |
1027 | |
1943 | |
1028 | #ifndef _WIN32 |
1944 | #ifndef _WIN32 |
1029 | ev_ref (EV_A); /* child watcher */ |
1945 | ev_ref (EV_A); /* child watcher */ |
1030 | ev_signal_stop (EV_A_ &childev); |
1946 | ev_signal_stop (EV_A_ &childev); |
1031 | #endif |
1947 | #endif |
1032 | |
1948 | |
1033 | ev_ref (EV_A); /* signal watcher */ |
|
|
1034 | ev_io_stop (EV_A_ &sigev); |
|
|
1035 | |
|
|
1036 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1037 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1038 | |
|
|
1039 | loop_destroy (EV_A); |
1949 | loop_destroy (EV_A); |
1040 | } |
1950 | } |
1041 | |
1951 | |
1042 | void |
1952 | void |
1043 | ev_default_fork (void) |
1953 | ev_default_fork (void) |
1044 | { |
1954 | { |
1045 | #if EV_MULTIPLICITY |
1955 | #if EV_MULTIPLICITY |
1046 | struct ev_loop *loop = ev_default_loop_ptr; |
1956 | EV_P = ev_default_loop_ptr; |
1047 | #endif |
1957 | #endif |
1048 | |
1958 | |
1049 | if (backend) |
1959 | postfork = 1; /* must be in line with ev_loop_fork */ |
1050 | postfork = 1; |
|
|
1051 | } |
1960 | } |
1052 | |
1961 | |
1053 | /*****************************************************************************/ |
1962 | /*****************************************************************************/ |
1054 | |
1963 | |
1055 | static int |
1964 | void |
1056 | any_pending (EV_P) |
1965 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1966 | { |
|
|
1967 | EV_CB_INVOKE ((W)w, revents); |
|
|
1968 | } |
|
|
1969 | |
|
|
1970 | unsigned int |
|
|
1971 | ev_pending_count (EV_P) |
1057 | { |
1972 | { |
1058 | int pri; |
1973 | int pri; |
|
|
1974 | unsigned int count = 0; |
1059 | |
1975 | |
1060 | for (pri = NUMPRI; pri--; ) |
1976 | for (pri = NUMPRI; pri--; ) |
1061 | if (pendingcnt [pri]) |
1977 | count += pendingcnt [pri]; |
1062 | return 1; |
|
|
1063 | |
1978 | |
1064 | return 0; |
1979 | return count; |
1065 | } |
1980 | } |
1066 | |
1981 | |
1067 | inline void |
1982 | void noinline |
1068 | call_pending (EV_P) |
1983 | ev_invoke_pending (EV_P) |
1069 | { |
1984 | { |
1070 | int pri; |
1985 | int pri; |
1071 | |
1986 | |
1072 | for (pri = NUMPRI; pri--; ) |
1987 | for (pri = NUMPRI; pri--; ) |
1073 | while (pendingcnt [pri]) |
1988 | while (pendingcnt [pri]) |
1074 | { |
1989 | { |
1075 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1990 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1076 | |
1991 | |
1077 | if (expect_true (p->w)) |
|
|
1078 | { |
|
|
1079 | assert (("non-pending watcher on pending list", p->w->pending)); |
1992 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
1993 | /* ^ this is no longer true, as pending_w could be here */ |
1080 | |
1994 | |
1081 | p->w->pending = 0; |
1995 | p->w->pending = 0; |
1082 | EV_CB_INVOKE (p->w, p->events); |
1996 | EV_CB_INVOKE (p->w, p->events); |
1083 | } |
1997 | EV_FREQUENT_CHECK; |
1084 | } |
1998 | } |
1085 | } |
1999 | } |
1086 | |
2000 | |
|
|
2001 | #if EV_IDLE_ENABLE |
|
|
2002 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
2003 | /* only when higher priorities are idle" logic */ |
1087 | inline void |
2004 | inline_size void |
|
|
2005 | idle_reify (EV_P) |
|
|
2006 | { |
|
|
2007 | if (expect_false (idleall)) |
|
|
2008 | { |
|
|
2009 | int pri; |
|
|
2010 | |
|
|
2011 | for (pri = NUMPRI; pri--; ) |
|
|
2012 | { |
|
|
2013 | if (pendingcnt [pri]) |
|
|
2014 | break; |
|
|
2015 | |
|
|
2016 | if (idlecnt [pri]) |
|
|
2017 | { |
|
|
2018 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
2019 | break; |
|
|
2020 | } |
|
|
2021 | } |
|
|
2022 | } |
|
|
2023 | } |
|
|
2024 | #endif |
|
|
2025 | |
|
|
2026 | /* make timers pending */ |
|
|
2027 | inline_size void |
1088 | timers_reify (EV_P) |
2028 | timers_reify (EV_P) |
1089 | { |
2029 | { |
|
|
2030 | EV_FREQUENT_CHECK; |
|
|
2031 | |
1090 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
2032 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
1091 | { |
2033 | { |
1092 | ev_timer *w = timers [0]; |
2034 | do |
1093 | |
|
|
1094 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
1095 | |
|
|
1096 | /* first reschedule or stop timer */ |
|
|
1097 | if (w->repeat) |
|
|
1098 | { |
2035 | { |
|
|
2036 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2037 | |
|
|
2038 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2039 | |
|
|
2040 | /* first reschedule or stop timer */ |
|
|
2041 | if (w->repeat) |
|
|
2042 | { |
|
|
2043 | ev_at (w) += w->repeat; |
|
|
2044 | if (ev_at (w) < mn_now) |
|
|
2045 | ev_at (w) = mn_now; |
|
|
2046 | |
1099 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2047 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1100 | |
2048 | |
1101 | ((WT)w)->at += w->repeat; |
2049 | ANHE_at_cache (timers [HEAP0]); |
1102 | if (((WT)w)->at < mn_now) |
|
|
1103 | ((WT)w)->at = mn_now; |
|
|
1104 | |
|
|
1105 | downheap ((WT *)timers, timercnt, 0); |
2050 | downheap (timers, timercnt, HEAP0); |
|
|
2051 | } |
|
|
2052 | else |
|
|
2053 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2054 | |
|
|
2055 | EV_FREQUENT_CHECK; |
|
|
2056 | feed_reverse (EV_A_ (W)w); |
1106 | } |
2057 | } |
1107 | else |
2058 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
1108 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1109 | |
2059 | |
1110 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
2060 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
1111 | } |
2061 | } |
1112 | } |
2062 | } |
1113 | |
2063 | |
1114 | #if EV_PERIODICS |
2064 | #if EV_PERIODIC_ENABLE |
|
|
2065 | /* make periodics pending */ |
1115 | inline void |
2066 | inline_size void |
1116 | periodics_reify (EV_P) |
2067 | periodics_reify (EV_P) |
1117 | { |
2068 | { |
|
|
2069 | EV_FREQUENT_CHECK; |
|
|
2070 | |
1118 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
2071 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1119 | { |
2072 | { |
1120 | ev_periodic *w = periodics [0]; |
2073 | int feed_count = 0; |
1121 | |
2074 | |
|
|
2075 | do |
|
|
2076 | { |
|
|
2077 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2078 | |
1122 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
2079 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1123 | |
2080 | |
1124 | /* first reschedule or stop timer */ |
2081 | /* first reschedule or stop timer */ |
|
|
2082 | if (w->reschedule_cb) |
|
|
2083 | { |
|
|
2084 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2085 | |
|
|
2086 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2087 | |
|
|
2088 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2089 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2090 | } |
|
|
2091 | else if (w->interval) |
|
|
2092 | { |
|
|
2093 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2094 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2095 | /* this might happen because of floating point inexactness */ |
|
|
2096 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2097 | { |
|
|
2098 | ev_at (w) += w->interval; |
|
|
2099 | |
|
|
2100 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2101 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2102 | /* has effectively asked to get triggered more often than possible */ |
|
|
2103 | if (ev_at (w) < ev_rt_now) |
|
|
2104 | ev_at (w) = ev_rt_now; |
|
|
2105 | } |
|
|
2106 | |
|
|
2107 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2108 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2109 | } |
|
|
2110 | else |
|
|
2111 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2112 | |
|
|
2113 | EV_FREQUENT_CHECK; |
|
|
2114 | feed_reverse (EV_A_ (W)w); |
|
|
2115 | } |
|
|
2116 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2117 | |
|
|
2118 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2119 | } |
|
|
2120 | } |
|
|
2121 | |
|
|
2122 | /* simply recalculate all periodics */ |
|
|
2123 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
|
|
2124 | static void noinline |
|
|
2125 | periodics_reschedule (EV_P) |
|
|
2126 | { |
|
|
2127 | int i; |
|
|
2128 | |
|
|
2129 | /* adjust periodics after time jump */ |
|
|
2130 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2131 | { |
|
|
2132 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2133 | |
1125 | if (w->reschedule_cb) |
2134 | if (w->reschedule_cb) |
|
|
2135 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2136 | else if (w->interval) |
|
|
2137 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2138 | |
|
|
2139 | ANHE_at_cache (periodics [i]); |
|
|
2140 | } |
|
|
2141 | |
|
|
2142 | reheap (periodics, periodiccnt); |
|
|
2143 | } |
|
|
2144 | #endif |
|
|
2145 | |
|
|
2146 | /* adjust all timers by a given offset */ |
|
|
2147 | static void noinline |
|
|
2148 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2149 | { |
|
|
2150 | int i; |
|
|
2151 | |
|
|
2152 | for (i = 0; i < timercnt; ++i) |
|
|
2153 | { |
|
|
2154 | ANHE *he = timers + i + HEAP0; |
|
|
2155 | ANHE_w (*he)->at += adjust; |
|
|
2156 | ANHE_at_cache (*he); |
|
|
2157 | } |
|
|
2158 | } |
|
|
2159 | |
|
|
2160 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2161 | /* also detetc if there was a timejump, and act accordingly */ |
|
|
2162 | inline_speed void |
|
|
2163 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2164 | { |
|
|
2165 | #if EV_USE_MONOTONIC |
|
|
2166 | if (expect_true (have_monotonic)) |
|
|
2167 | { |
|
|
2168 | int i; |
|
|
2169 | ev_tstamp odiff = rtmn_diff; |
|
|
2170 | |
|
|
2171 | mn_now = get_clock (); |
|
|
2172 | |
|
|
2173 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2174 | /* interpolate in the meantime */ |
|
|
2175 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1126 | { |
2176 | { |
1127 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
2177 | ev_rt_now = rtmn_diff + mn_now; |
1128 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
2178 | return; |
1129 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1130 | } |
2179 | } |
1131 | else if (w->interval) |
|
|
1132 | { |
|
|
1133 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1134 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1135 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1136 | } |
|
|
1137 | else |
|
|
1138 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1139 | |
2180 | |
1140 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1141 | } |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | static void |
|
|
1145 | periodics_reschedule (EV_P) |
|
|
1146 | { |
|
|
1147 | int i; |
|
|
1148 | |
|
|
1149 | /* adjust periodics after time jump */ |
|
|
1150 | for (i = 0; i < periodiccnt; ++i) |
|
|
1151 | { |
|
|
1152 | ev_periodic *w = periodics [i]; |
|
|
1153 | |
|
|
1154 | if (w->reschedule_cb) |
|
|
1155 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1156 | else if (w->interval) |
|
|
1157 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1158 | } |
|
|
1159 | |
|
|
1160 | /* now rebuild the heap */ |
|
|
1161 | for (i = periodiccnt >> 1; i--; ) |
|
|
1162 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1163 | } |
|
|
1164 | #endif |
|
|
1165 | |
|
|
1166 | inline int |
|
|
1167 | time_update_monotonic (EV_P) |
|
|
1168 | { |
|
|
1169 | mn_now = get_clock (); |
|
|
1170 | |
|
|
1171 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1172 | { |
|
|
1173 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1174 | return 0; |
|
|
1175 | } |
|
|
1176 | else |
|
|
1177 | { |
|
|
1178 | now_floor = mn_now; |
2181 | now_floor = mn_now; |
1179 | ev_rt_now = ev_time (); |
2182 | ev_rt_now = ev_time (); |
1180 | return 1; |
|
|
1181 | } |
|
|
1182 | } |
|
|
1183 | |
2183 | |
1184 | inline void |
2184 | /* loop a few times, before making important decisions. |
1185 | time_update (EV_P) |
2185 | * on the choice of "4": one iteration isn't enough, |
1186 | { |
2186 | * in case we get preempted during the calls to |
1187 | int i; |
2187 | * ev_time and get_clock. a second call is almost guaranteed |
1188 | |
2188 | * to succeed in that case, though. and looping a few more times |
1189 | #if EV_USE_MONOTONIC |
2189 | * doesn't hurt either as we only do this on time-jumps or |
1190 | if (expect_true (have_monotonic)) |
2190 | * in the unlikely event of having been preempted here. |
1191 | { |
2191 | */ |
1192 | if (time_update_monotonic (EV_A)) |
2192 | for (i = 4; --i; ) |
1193 | { |
2193 | { |
1194 | ev_tstamp odiff = rtmn_diff; |
|
|
1195 | |
|
|
1196 | /* loop a few times, before making important decisions. |
|
|
1197 | * on the choice of "4": one iteration isn't enough, |
|
|
1198 | * in case we get preempted during the calls to |
|
|
1199 | * ev_time and get_clock. a second call is almost guarenteed |
|
|
1200 | * to succeed in that case, though. and looping a few more times |
|
|
1201 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1202 | * in the unlikely event of getting preempted here. |
|
|
1203 | */ |
|
|
1204 | for (i = 4; --i; ) |
|
|
1205 | { |
|
|
1206 | rtmn_diff = ev_rt_now - mn_now; |
2194 | rtmn_diff = ev_rt_now - mn_now; |
1207 | |
2195 | |
1208 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
2196 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1209 | return; /* all is well */ |
2197 | return; /* all is well */ |
1210 | |
2198 | |
1211 | ev_rt_now = ev_time (); |
2199 | ev_rt_now = ev_time (); |
1212 | mn_now = get_clock (); |
2200 | mn_now = get_clock (); |
1213 | now_floor = mn_now; |
2201 | now_floor = mn_now; |
1214 | } |
2202 | } |
1215 | |
2203 | |
|
|
2204 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2205 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1216 | # if EV_PERIODICS |
2206 | # if EV_PERIODIC_ENABLE |
|
|
2207 | periodics_reschedule (EV_A); |
|
|
2208 | # endif |
|
|
2209 | } |
|
|
2210 | else |
|
|
2211 | #endif |
|
|
2212 | { |
|
|
2213 | ev_rt_now = ev_time (); |
|
|
2214 | |
|
|
2215 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
2216 | { |
|
|
2217 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
2218 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
2219 | #if EV_PERIODIC_ENABLE |
1217 | periodics_reschedule (EV_A); |
2220 | periodics_reschedule (EV_A); |
1218 | # endif |
2221 | #endif |
1219 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1220 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1221 | } |
2222 | } |
1222 | } |
|
|
1223 | else |
|
|
1224 | #endif |
|
|
1225 | { |
|
|
1226 | ev_rt_now = ev_time (); |
|
|
1227 | |
|
|
1228 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1229 | { |
|
|
1230 | #if EV_PERIODICS |
|
|
1231 | periodics_reschedule (EV_A); |
|
|
1232 | #endif |
|
|
1233 | |
|
|
1234 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1235 | for (i = 0; i < timercnt; ++i) |
|
|
1236 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1237 | } |
|
|
1238 | |
2223 | |
1239 | mn_now = ev_rt_now; |
2224 | mn_now = ev_rt_now; |
1240 | } |
2225 | } |
1241 | } |
2226 | } |
1242 | |
2227 | |
1243 | void |
2228 | void |
1244 | ev_ref (EV_P) |
|
|
1245 | { |
|
|
1246 | ++activecnt; |
|
|
1247 | } |
|
|
1248 | |
|
|
1249 | void |
|
|
1250 | ev_unref (EV_P) |
|
|
1251 | { |
|
|
1252 | --activecnt; |
|
|
1253 | } |
|
|
1254 | |
|
|
1255 | static int loop_done; |
|
|
1256 | |
|
|
1257 | void |
|
|
1258 | ev_loop (EV_P_ int flags) |
2229 | ev_loop (EV_P_ int flags) |
1259 | { |
2230 | { |
1260 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
2231 | #if EV_MINIMAL < 2 |
1261 | ? EVUNLOOP_ONE |
2232 | ++loop_depth; |
1262 | : EVUNLOOP_CANCEL; |
2233 | #endif |
1263 | |
2234 | |
1264 | while (activecnt) |
2235 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
|
|
2236 | |
|
|
2237 | loop_done = EVUNLOOP_CANCEL; |
|
|
2238 | |
|
|
2239 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
2240 | |
|
|
2241 | do |
1265 | { |
2242 | { |
|
|
2243 | #if EV_VERIFY >= 2 |
|
|
2244 | ev_loop_verify (EV_A); |
|
|
2245 | #endif |
|
|
2246 | |
|
|
2247 | #ifndef _WIN32 |
|
|
2248 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2249 | if (expect_false (getpid () != curpid)) |
|
|
2250 | { |
|
|
2251 | curpid = getpid (); |
|
|
2252 | postfork = 1; |
|
|
2253 | } |
|
|
2254 | #endif |
|
|
2255 | |
|
|
2256 | #if EV_FORK_ENABLE |
|
|
2257 | /* we might have forked, so queue fork handlers */ |
|
|
2258 | if (expect_false (postfork)) |
|
|
2259 | if (forkcnt) |
|
|
2260 | { |
|
|
2261 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2262 | EV_INVOKE_PENDING; |
|
|
2263 | } |
|
|
2264 | #endif |
|
|
2265 | |
1266 | /* queue check watchers (and execute them) */ |
2266 | /* queue prepare watchers (and execute them) */ |
1267 | if (expect_false (preparecnt)) |
2267 | if (expect_false (preparecnt)) |
1268 | { |
2268 | { |
1269 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2269 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1270 | call_pending (EV_A); |
2270 | EV_INVOKE_PENDING; |
1271 | } |
2271 | } |
|
|
2272 | |
|
|
2273 | if (expect_false (loop_done)) |
|
|
2274 | break; |
1272 | |
2275 | |
1273 | /* we might have forked, so reify kernel state if necessary */ |
2276 | /* we might have forked, so reify kernel state if necessary */ |
1274 | if (expect_false (postfork)) |
2277 | if (expect_false (postfork)) |
1275 | loop_fork (EV_A); |
2278 | loop_fork (EV_A); |
1276 | |
2279 | |
1277 | /* update fd-related kernel structures */ |
2280 | /* update fd-related kernel structures */ |
1278 | fd_reify (EV_A); |
2281 | fd_reify (EV_A); |
1279 | |
2282 | |
1280 | /* calculate blocking time */ |
2283 | /* calculate blocking time */ |
1281 | { |
2284 | { |
1282 | double block; |
2285 | ev_tstamp waittime = 0.; |
|
|
2286 | ev_tstamp sleeptime = 0.; |
1283 | |
2287 | |
1284 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
2288 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1285 | block = 0.; /* do not block at all */ |
|
|
1286 | else |
|
|
1287 | { |
2289 | { |
|
|
2290 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2291 | ev_tstamp prev_mn_now = mn_now; |
|
|
2292 | |
1288 | /* update time to cancel out callback processing overhead */ |
2293 | /* update time to cancel out callback processing overhead */ |
1289 | #if EV_USE_MONOTONIC |
|
|
1290 | if (expect_true (have_monotonic)) |
|
|
1291 | time_update_monotonic (EV_A); |
2294 | time_update (EV_A_ 1e100); |
1292 | else |
|
|
1293 | #endif |
|
|
1294 | { |
|
|
1295 | ev_rt_now = ev_time (); |
|
|
1296 | mn_now = ev_rt_now; |
|
|
1297 | } |
|
|
1298 | |
2295 | |
1299 | block = MAX_BLOCKTIME; |
2296 | waittime = MAX_BLOCKTIME; |
1300 | |
2297 | |
1301 | if (timercnt) |
2298 | if (timercnt) |
1302 | { |
2299 | { |
1303 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
2300 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1304 | if (block > to) block = to; |
2301 | if (waittime > to) waittime = to; |
1305 | } |
2302 | } |
1306 | |
2303 | |
1307 | #if EV_PERIODICS |
2304 | #if EV_PERIODIC_ENABLE |
1308 | if (periodiccnt) |
2305 | if (periodiccnt) |
1309 | { |
2306 | { |
1310 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
2307 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1311 | if (block > to) block = to; |
2308 | if (waittime > to) waittime = to; |
1312 | } |
2309 | } |
1313 | #endif |
2310 | #endif |
1314 | |
2311 | |
|
|
2312 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2313 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2314 | waittime = timeout_blocktime; |
|
|
2315 | |
|
|
2316 | /* extra check because io_blocktime is commonly 0 */ |
1315 | if (expect_false (block < 0.)) block = 0.; |
2317 | if (expect_false (io_blocktime)) |
|
|
2318 | { |
|
|
2319 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2320 | |
|
|
2321 | if (sleeptime > waittime - backend_fudge) |
|
|
2322 | sleeptime = waittime - backend_fudge; |
|
|
2323 | |
|
|
2324 | if (expect_true (sleeptime > 0.)) |
|
|
2325 | { |
|
|
2326 | ev_sleep (sleeptime); |
|
|
2327 | waittime -= sleeptime; |
|
|
2328 | } |
|
|
2329 | } |
1316 | } |
2330 | } |
1317 | |
2331 | |
|
|
2332 | #if EV_MINIMAL < 2 |
|
|
2333 | ++loop_count; |
|
|
2334 | #endif |
|
|
2335 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
1318 | backend_poll (EV_A_ block); |
2336 | backend_poll (EV_A_ waittime); |
|
|
2337 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
|
|
2338 | |
|
|
2339 | /* update ev_rt_now, do magic */ |
|
|
2340 | time_update (EV_A_ waittime + sleeptime); |
1319 | } |
2341 | } |
1320 | |
|
|
1321 | /* update ev_rt_now, do magic */ |
|
|
1322 | time_update (EV_A); |
|
|
1323 | |
2342 | |
1324 | /* queue pending timers and reschedule them */ |
2343 | /* queue pending timers and reschedule them */ |
1325 | timers_reify (EV_A); /* relative timers called last */ |
2344 | timers_reify (EV_A); /* relative timers called last */ |
1326 | #if EV_PERIODICS |
2345 | #if EV_PERIODIC_ENABLE |
1327 | periodics_reify (EV_A); /* absolute timers called first */ |
2346 | periodics_reify (EV_A); /* absolute timers called first */ |
1328 | #endif |
2347 | #endif |
1329 | |
2348 | |
|
|
2349 | #if EV_IDLE_ENABLE |
1330 | /* queue idle watchers unless other events are pending */ |
2350 | /* queue idle watchers unless other events are pending */ |
1331 | if (idlecnt && !any_pending (EV_A)) |
2351 | idle_reify (EV_A); |
1332 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
2352 | #endif |
1333 | |
2353 | |
1334 | /* queue check watchers, to be executed first */ |
2354 | /* queue check watchers, to be executed first */ |
1335 | if (expect_false (checkcnt)) |
2355 | if (expect_false (checkcnt)) |
1336 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2356 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1337 | |
2357 | |
1338 | call_pending (EV_A); |
2358 | EV_INVOKE_PENDING; |
1339 | |
|
|
1340 | if (expect_false (loop_done)) |
|
|
1341 | break; |
|
|
1342 | } |
2359 | } |
|
|
2360 | while (expect_true ( |
|
|
2361 | activecnt |
|
|
2362 | && !loop_done |
|
|
2363 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2364 | )); |
1343 | |
2365 | |
1344 | if (loop_done == EVUNLOOP_ONE) |
2366 | if (loop_done == EVUNLOOP_ONE) |
1345 | loop_done = EVUNLOOP_CANCEL; |
2367 | loop_done = EVUNLOOP_CANCEL; |
|
|
2368 | |
|
|
2369 | #if EV_MINIMAL < 2 |
|
|
2370 | --loop_depth; |
|
|
2371 | #endif |
1346 | } |
2372 | } |
1347 | |
2373 | |
1348 | void |
2374 | void |
1349 | ev_unloop (EV_P_ int how) |
2375 | ev_unloop (EV_P_ int how) |
1350 | { |
2376 | { |
1351 | loop_done = how; |
2377 | loop_done = how; |
1352 | } |
2378 | } |
1353 | |
2379 | |
|
|
2380 | void |
|
|
2381 | ev_ref (EV_P) |
|
|
2382 | { |
|
|
2383 | ++activecnt; |
|
|
2384 | } |
|
|
2385 | |
|
|
2386 | void |
|
|
2387 | ev_unref (EV_P) |
|
|
2388 | { |
|
|
2389 | --activecnt; |
|
|
2390 | } |
|
|
2391 | |
|
|
2392 | void |
|
|
2393 | ev_now_update (EV_P) |
|
|
2394 | { |
|
|
2395 | time_update (EV_A_ 1e100); |
|
|
2396 | } |
|
|
2397 | |
|
|
2398 | void |
|
|
2399 | ev_suspend (EV_P) |
|
|
2400 | { |
|
|
2401 | ev_now_update (EV_A); |
|
|
2402 | } |
|
|
2403 | |
|
|
2404 | void |
|
|
2405 | ev_resume (EV_P) |
|
|
2406 | { |
|
|
2407 | ev_tstamp mn_prev = mn_now; |
|
|
2408 | |
|
|
2409 | ev_now_update (EV_A); |
|
|
2410 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2411 | #if EV_PERIODIC_ENABLE |
|
|
2412 | /* TODO: really do this? */ |
|
|
2413 | periodics_reschedule (EV_A); |
|
|
2414 | #endif |
|
|
2415 | } |
|
|
2416 | |
1354 | /*****************************************************************************/ |
2417 | /*****************************************************************************/ |
|
|
2418 | /* singly-linked list management, used when the expected list length is short */ |
1355 | |
2419 | |
1356 | inline void |
2420 | inline_size void |
1357 | wlist_add (WL *head, WL elem) |
2421 | wlist_add (WL *head, WL elem) |
1358 | { |
2422 | { |
1359 | elem->next = *head; |
2423 | elem->next = *head; |
1360 | *head = elem; |
2424 | *head = elem; |
1361 | } |
2425 | } |
1362 | |
2426 | |
1363 | inline void |
2427 | inline_size void |
1364 | wlist_del (WL *head, WL elem) |
2428 | wlist_del (WL *head, WL elem) |
1365 | { |
2429 | { |
1366 | while (*head) |
2430 | while (*head) |
1367 | { |
2431 | { |
1368 | if (*head == elem) |
2432 | if (expect_true (*head == elem)) |
1369 | { |
2433 | { |
1370 | *head = elem->next; |
2434 | *head = elem->next; |
1371 | return; |
2435 | break; |
1372 | } |
2436 | } |
1373 | |
2437 | |
1374 | head = &(*head)->next; |
2438 | head = &(*head)->next; |
1375 | } |
2439 | } |
1376 | } |
2440 | } |
1377 | |
2441 | |
|
|
2442 | /* internal, faster, version of ev_clear_pending */ |
1378 | inline void |
2443 | inline_speed void |
1379 | ev_clear_pending (EV_P_ W w) |
2444 | clear_pending (EV_P_ W w) |
1380 | { |
2445 | { |
1381 | if (w->pending) |
2446 | if (w->pending) |
1382 | { |
2447 | { |
1383 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
2448 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1384 | w->pending = 0; |
2449 | w->pending = 0; |
1385 | } |
2450 | } |
1386 | } |
2451 | } |
1387 | |
2452 | |
|
|
2453 | int |
|
|
2454 | ev_clear_pending (EV_P_ void *w) |
|
|
2455 | { |
|
|
2456 | W w_ = (W)w; |
|
|
2457 | int pending = w_->pending; |
|
|
2458 | |
|
|
2459 | if (expect_true (pending)) |
|
|
2460 | { |
|
|
2461 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2462 | p->w = (W)&pending_w; |
|
|
2463 | w_->pending = 0; |
|
|
2464 | return p->events; |
|
|
2465 | } |
|
|
2466 | else |
|
|
2467 | return 0; |
|
|
2468 | } |
|
|
2469 | |
1388 | inline void |
2470 | inline_size void |
|
|
2471 | pri_adjust (EV_P_ W w) |
|
|
2472 | { |
|
|
2473 | int pri = ev_priority (w); |
|
|
2474 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2475 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2476 | ev_set_priority (w, pri); |
|
|
2477 | } |
|
|
2478 | |
|
|
2479 | inline_speed void |
1389 | ev_start (EV_P_ W w, int active) |
2480 | ev_start (EV_P_ W w, int active) |
1390 | { |
2481 | { |
1391 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
2482 | pri_adjust (EV_A_ w); |
1392 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1393 | |
|
|
1394 | w->active = active; |
2483 | w->active = active; |
1395 | ev_ref (EV_A); |
2484 | ev_ref (EV_A); |
1396 | } |
2485 | } |
1397 | |
2486 | |
1398 | inline void |
2487 | inline_size void |
1399 | ev_stop (EV_P_ W w) |
2488 | ev_stop (EV_P_ W w) |
1400 | { |
2489 | { |
1401 | ev_unref (EV_A); |
2490 | ev_unref (EV_A); |
1402 | w->active = 0; |
2491 | w->active = 0; |
1403 | } |
2492 | } |
1404 | |
2493 | |
1405 | /*****************************************************************************/ |
2494 | /*****************************************************************************/ |
1406 | |
2495 | |
1407 | void |
2496 | void noinline |
1408 | ev_io_start (EV_P_ ev_io *w) |
2497 | ev_io_start (EV_P_ ev_io *w) |
1409 | { |
2498 | { |
1410 | int fd = w->fd; |
2499 | int fd = w->fd; |
1411 | |
2500 | |
1412 | if (expect_false (ev_is_active (w))) |
2501 | if (expect_false (ev_is_active (w))) |
1413 | return; |
2502 | return; |
1414 | |
2503 | |
1415 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2504 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2505 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2506 | |
|
|
2507 | EV_FREQUENT_CHECK; |
1416 | |
2508 | |
1417 | ev_start (EV_A_ (W)w, 1); |
2509 | ev_start (EV_A_ (W)w, 1); |
1418 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
2510 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1419 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2511 | wlist_add (&anfds[fd].head, (WL)w); |
1420 | |
2512 | |
1421 | fd_change (EV_A_ fd); |
2513 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
1422 | } |
2514 | w->events &= ~EV__IOFDSET; |
1423 | |
2515 | |
1424 | void |
2516 | EV_FREQUENT_CHECK; |
|
|
2517 | } |
|
|
2518 | |
|
|
2519 | void noinline |
1425 | ev_io_stop (EV_P_ ev_io *w) |
2520 | ev_io_stop (EV_P_ ev_io *w) |
1426 | { |
2521 | { |
1427 | ev_clear_pending (EV_A_ (W)w); |
2522 | clear_pending (EV_A_ (W)w); |
1428 | if (expect_false (!ev_is_active (w))) |
2523 | if (expect_false (!ev_is_active (w))) |
1429 | return; |
2524 | return; |
1430 | |
2525 | |
1431 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2526 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1432 | |
2527 | |
|
|
2528 | EV_FREQUENT_CHECK; |
|
|
2529 | |
1433 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2530 | wlist_del (&anfds[w->fd].head, (WL)w); |
1434 | ev_stop (EV_A_ (W)w); |
2531 | ev_stop (EV_A_ (W)w); |
1435 | |
2532 | |
1436 | fd_change (EV_A_ w->fd); |
2533 | fd_change (EV_A_ w->fd, 1); |
1437 | } |
|
|
1438 | |
2534 | |
1439 | void |
2535 | EV_FREQUENT_CHECK; |
|
|
2536 | } |
|
|
2537 | |
|
|
2538 | void noinline |
1440 | ev_timer_start (EV_P_ ev_timer *w) |
2539 | ev_timer_start (EV_P_ ev_timer *w) |
1441 | { |
2540 | { |
1442 | if (expect_false (ev_is_active (w))) |
2541 | if (expect_false (ev_is_active (w))) |
1443 | return; |
2542 | return; |
1444 | |
2543 | |
1445 | ((WT)w)->at += mn_now; |
2544 | ev_at (w) += mn_now; |
1446 | |
2545 | |
1447 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2546 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1448 | |
2547 | |
|
|
2548 | EV_FREQUENT_CHECK; |
|
|
2549 | |
|
|
2550 | ++timercnt; |
1449 | ev_start (EV_A_ (W)w, ++timercnt); |
2551 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1450 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
2552 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1451 | timers [timercnt - 1] = w; |
2553 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1452 | upheap ((WT *)timers, timercnt - 1); |
2554 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2555 | upheap (timers, ev_active (w)); |
1453 | |
2556 | |
|
|
2557 | EV_FREQUENT_CHECK; |
|
|
2558 | |
1454 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2559 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1455 | } |
2560 | } |
1456 | |
2561 | |
1457 | void |
2562 | void noinline |
1458 | ev_timer_stop (EV_P_ ev_timer *w) |
2563 | ev_timer_stop (EV_P_ ev_timer *w) |
1459 | { |
2564 | { |
1460 | ev_clear_pending (EV_A_ (W)w); |
2565 | clear_pending (EV_A_ (W)w); |
1461 | if (expect_false (!ev_is_active (w))) |
2566 | if (expect_false (!ev_is_active (w))) |
1462 | return; |
2567 | return; |
1463 | |
2568 | |
|
|
2569 | EV_FREQUENT_CHECK; |
|
|
2570 | |
|
|
2571 | { |
|
|
2572 | int active = ev_active (w); |
|
|
2573 | |
1464 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2574 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
1465 | |
2575 | |
|
|
2576 | --timercnt; |
|
|
2577 | |
1466 | if (expect_true (((W)w)->active < timercnt--)) |
2578 | if (expect_true (active < timercnt + HEAP0)) |
1467 | { |
2579 | { |
1468 | timers [((W)w)->active - 1] = timers [timercnt]; |
2580 | timers [active] = timers [timercnt + HEAP0]; |
1469 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2581 | adjustheap (timers, timercnt, active); |
1470 | } |
2582 | } |
|
|
2583 | } |
1471 | |
2584 | |
1472 | ((WT)w)->at -= mn_now; |
2585 | EV_FREQUENT_CHECK; |
|
|
2586 | |
|
|
2587 | ev_at (w) -= mn_now; |
1473 | |
2588 | |
1474 | ev_stop (EV_A_ (W)w); |
2589 | ev_stop (EV_A_ (W)w); |
1475 | } |
2590 | } |
1476 | |
2591 | |
1477 | void |
2592 | void noinline |
1478 | ev_timer_again (EV_P_ ev_timer *w) |
2593 | ev_timer_again (EV_P_ ev_timer *w) |
1479 | { |
2594 | { |
|
|
2595 | EV_FREQUENT_CHECK; |
|
|
2596 | |
1480 | if (ev_is_active (w)) |
2597 | if (ev_is_active (w)) |
1481 | { |
2598 | { |
1482 | if (w->repeat) |
2599 | if (w->repeat) |
1483 | { |
2600 | { |
1484 | ((WT)w)->at = mn_now + w->repeat; |
2601 | ev_at (w) = mn_now + w->repeat; |
|
|
2602 | ANHE_at_cache (timers [ev_active (w)]); |
1485 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2603 | adjustheap (timers, timercnt, ev_active (w)); |
1486 | } |
2604 | } |
1487 | else |
2605 | else |
1488 | ev_timer_stop (EV_A_ w); |
2606 | ev_timer_stop (EV_A_ w); |
1489 | } |
2607 | } |
1490 | else if (w->repeat) |
2608 | else if (w->repeat) |
1491 | { |
2609 | { |
1492 | w->at = w->repeat; |
2610 | ev_at (w) = w->repeat; |
1493 | ev_timer_start (EV_A_ w); |
2611 | ev_timer_start (EV_A_ w); |
1494 | } |
2612 | } |
1495 | } |
|
|
1496 | |
2613 | |
|
|
2614 | EV_FREQUENT_CHECK; |
|
|
2615 | } |
|
|
2616 | |
|
|
2617 | ev_tstamp |
|
|
2618 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2619 | { |
|
|
2620 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2621 | } |
|
|
2622 | |
1497 | #if EV_PERIODICS |
2623 | #if EV_PERIODIC_ENABLE |
1498 | void |
2624 | void noinline |
1499 | ev_periodic_start (EV_P_ ev_periodic *w) |
2625 | ev_periodic_start (EV_P_ ev_periodic *w) |
1500 | { |
2626 | { |
1501 | if (expect_false (ev_is_active (w))) |
2627 | if (expect_false (ev_is_active (w))) |
1502 | return; |
2628 | return; |
1503 | |
2629 | |
1504 | if (w->reschedule_cb) |
2630 | if (w->reschedule_cb) |
1505 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2631 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1506 | else if (w->interval) |
2632 | else if (w->interval) |
1507 | { |
2633 | { |
1508 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2634 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1509 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2635 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1510 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2636 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1511 | } |
2637 | } |
|
|
2638 | else |
|
|
2639 | ev_at (w) = w->offset; |
1512 | |
2640 | |
|
|
2641 | EV_FREQUENT_CHECK; |
|
|
2642 | |
|
|
2643 | ++periodiccnt; |
1513 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2644 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1514 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
2645 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1515 | periodics [periodiccnt - 1] = w; |
2646 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1516 | upheap ((WT *)periodics, periodiccnt - 1); |
2647 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2648 | upheap (periodics, ev_active (w)); |
1517 | |
2649 | |
|
|
2650 | EV_FREQUENT_CHECK; |
|
|
2651 | |
1518 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2652 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1519 | } |
2653 | } |
1520 | |
2654 | |
1521 | void |
2655 | void noinline |
1522 | ev_periodic_stop (EV_P_ ev_periodic *w) |
2656 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1523 | { |
2657 | { |
1524 | ev_clear_pending (EV_A_ (W)w); |
2658 | clear_pending (EV_A_ (W)w); |
1525 | if (expect_false (!ev_is_active (w))) |
2659 | if (expect_false (!ev_is_active (w))) |
1526 | return; |
2660 | return; |
1527 | |
2661 | |
|
|
2662 | EV_FREQUENT_CHECK; |
|
|
2663 | |
|
|
2664 | { |
|
|
2665 | int active = ev_active (w); |
|
|
2666 | |
1528 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2667 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1529 | |
2668 | |
|
|
2669 | --periodiccnt; |
|
|
2670 | |
1530 | if (expect_true (((W)w)->active < periodiccnt--)) |
2671 | if (expect_true (active < periodiccnt + HEAP0)) |
1531 | { |
2672 | { |
1532 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2673 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1533 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2674 | adjustheap (periodics, periodiccnt, active); |
1534 | } |
2675 | } |
|
|
2676 | } |
|
|
2677 | |
|
|
2678 | EV_FREQUENT_CHECK; |
1535 | |
2679 | |
1536 | ev_stop (EV_A_ (W)w); |
2680 | ev_stop (EV_A_ (W)w); |
1537 | } |
2681 | } |
1538 | |
2682 | |
1539 | void |
2683 | void noinline |
1540 | ev_periodic_again (EV_P_ ev_periodic *w) |
2684 | ev_periodic_again (EV_P_ ev_periodic *w) |
1541 | { |
2685 | { |
1542 | /* TODO: use adjustheap and recalculation */ |
2686 | /* TODO: use adjustheap and recalculation */ |
1543 | ev_periodic_stop (EV_A_ w); |
2687 | ev_periodic_stop (EV_A_ w); |
1544 | ev_periodic_start (EV_A_ w); |
2688 | ev_periodic_start (EV_A_ w); |
1545 | } |
2689 | } |
1546 | #endif |
2690 | #endif |
1547 | |
2691 | |
1548 | void |
2692 | #ifndef SA_RESTART |
|
|
2693 | # define SA_RESTART 0 |
|
|
2694 | #endif |
|
|
2695 | |
|
|
2696 | void noinline |
1549 | ev_idle_start (EV_P_ ev_idle *w) |
2697 | ev_signal_start (EV_P_ ev_signal *w) |
1550 | { |
2698 | { |
1551 | if (expect_false (ev_is_active (w))) |
2699 | if (expect_false (ev_is_active (w))) |
1552 | return; |
2700 | return; |
1553 | |
2701 | |
|
|
2702 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
2703 | |
|
|
2704 | #if EV_MULTIPLICITY |
|
|
2705 | assert (("libev: a signal must not be attached to two different loops", |
|
|
2706 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
2707 | |
|
|
2708 | signals [w->signum - 1].loop = EV_A; |
|
|
2709 | #endif |
|
|
2710 | |
|
|
2711 | EV_FREQUENT_CHECK; |
|
|
2712 | |
|
|
2713 | #if EV_USE_SIGNALFD |
|
|
2714 | if (sigfd == -2) |
|
|
2715 | { |
|
|
2716 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
2717 | if (sigfd < 0 && errno == EINVAL) |
|
|
2718 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
2719 | |
|
|
2720 | if (sigfd >= 0) |
|
|
2721 | { |
|
|
2722 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
2723 | |
|
|
2724 | sigemptyset (&sigfd_set); |
|
|
2725 | |
|
|
2726 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2727 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2728 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2729 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2730 | } |
|
|
2731 | } |
|
|
2732 | |
|
|
2733 | if (sigfd >= 0) |
|
|
2734 | { |
|
|
2735 | /* TODO: check .head */ |
|
|
2736 | sigaddset (&sigfd_set, w->signum); |
|
|
2737 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2738 | |
|
|
2739 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2740 | } |
|
|
2741 | #endif |
|
|
2742 | |
1554 | ev_start (EV_A_ (W)w, ++idlecnt); |
2743 | ev_start (EV_A_ (W)w, 1); |
1555 | array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
2744 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1556 | idles [idlecnt - 1] = w; |
|
|
1557 | } |
|
|
1558 | |
2745 | |
1559 | void |
2746 | if (!((WL)w)->next) |
|
|
2747 | # if EV_USE_SIGNALFD |
|
|
2748 | if (sigfd < 0) /*TODO*/ |
|
|
2749 | # endif |
|
|
2750 | { |
|
|
2751 | # if _WIN32 |
|
|
2752 | evpipe_init (EV_A); |
|
|
2753 | |
|
|
2754 | signal (w->signum, ev_sighandler); |
|
|
2755 | # else |
|
|
2756 | struct sigaction sa; |
|
|
2757 | |
|
|
2758 | evpipe_init (EV_A); |
|
|
2759 | |
|
|
2760 | sa.sa_handler = ev_sighandler; |
|
|
2761 | sigfillset (&sa.sa_mask); |
|
|
2762 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2763 | sigaction (w->signum, &sa, 0); |
|
|
2764 | |
|
|
2765 | sigemptyset (&sa.sa_mask); |
|
|
2766 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2767 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2768 | #endif |
|
|
2769 | } |
|
|
2770 | |
|
|
2771 | EV_FREQUENT_CHECK; |
|
|
2772 | } |
|
|
2773 | |
|
|
2774 | void noinline |
1560 | ev_idle_stop (EV_P_ ev_idle *w) |
2775 | ev_signal_stop (EV_P_ ev_signal *w) |
1561 | { |
2776 | { |
1562 | ev_clear_pending (EV_A_ (W)w); |
2777 | clear_pending (EV_A_ (W)w); |
1563 | if (expect_false (!ev_is_active (w))) |
2778 | if (expect_false (!ev_is_active (w))) |
1564 | return; |
2779 | return; |
1565 | |
2780 | |
1566 | { |
2781 | EV_FREQUENT_CHECK; |
1567 | int active = ((W)w)->active; |
|
|
1568 | idles [active - 1] = idles [--idlecnt]; |
|
|
1569 | ((W)idles [active - 1])->active = active; |
|
|
1570 | } |
|
|
1571 | |
2782 | |
|
|
2783 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1572 | ev_stop (EV_A_ (W)w); |
2784 | ev_stop (EV_A_ (W)w); |
1573 | } |
|
|
1574 | |
2785 | |
|
|
2786 | if (!signals [w->signum - 1].head) |
|
|
2787 | { |
|
|
2788 | #if EV_MULTIPLICITY |
|
|
2789 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2790 | #endif |
|
|
2791 | #if EV_USE_SIGNALFD |
|
|
2792 | if (sigfd >= 0) |
|
|
2793 | { |
|
|
2794 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
|
|
2795 | sigdelset (&sigfd_set, w->signum); |
|
|
2796 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2797 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
|
|
2798 | /*TODO: maybe unblock signal? */ |
|
|
2799 | } |
|
|
2800 | else |
|
|
2801 | #endif |
|
|
2802 | signal (w->signum, SIG_DFL); |
|
|
2803 | } |
|
|
2804 | |
|
|
2805 | EV_FREQUENT_CHECK; |
|
|
2806 | } |
|
|
2807 | |
1575 | void |
2808 | void |
1576 | ev_prepare_start (EV_P_ ev_prepare *w) |
2809 | ev_child_start (EV_P_ ev_child *w) |
1577 | { |
2810 | { |
|
|
2811 | #if EV_MULTIPLICITY |
|
|
2812 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2813 | #endif |
1578 | if (expect_false (ev_is_active (w))) |
2814 | if (expect_false (ev_is_active (w))) |
1579 | return; |
2815 | return; |
|
|
2816 | |
|
|
2817 | EV_FREQUENT_CHECK; |
|
|
2818 | |
|
|
2819 | ev_start (EV_A_ (W)w, 1); |
|
|
2820 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2821 | |
|
|
2822 | EV_FREQUENT_CHECK; |
|
|
2823 | } |
|
|
2824 | |
|
|
2825 | void |
|
|
2826 | ev_child_stop (EV_P_ ev_child *w) |
|
|
2827 | { |
|
|
2828 | clear_pending (EV_A_ (W)w); |
|
|
2829 | if (expect_false (!ev_is_active (w))) |
|
|
2830 | return; |
|
|
2831 | |
|
|
2832 | EV_FREQUENT_CHECK; |
|
|
2833 | |
|
|
2834 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2835 | ev_stop (EV_A_ (W)w); |
|
|
2836 | |
|
|
2837 | EV_FREQUENT_CHECK; |
|
|
2838 | } |
|
|
2839 | |
|
|
2840 | #if EV_STAT_ENABLE |
|
|
2841 | |
|
|
2842 | # ifdef _WIN32 |
|
|
2843 | # undef lstat |
|
|
2844 | # define lstat(a,b) _stati64 (a,b) |
|
|
2845 | # endif |
|
|
2846 | |
|
|
2847 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2848 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2849 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2850 | |
|
|
2851 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2852 | |
|
|
2853 | #if EV_USE_INOTIFY |
|
|
2854 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2855 | |
|
|
2856 | static void noinline |
|
|
2857 | infy_add (EV_P_ ev_stat *w) |
|
|
2858 | { |
|
|
2859 | 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); |
|
|
2860 | |
|
|
2861 | if (w->wd >= 0) |
|
|
2862 | { |
|
|
2863 | struct statfs sfs; |
|
|
2864 | |
|
|
2865 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2866 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2867 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2868 | |
|
|
2869 | if (!fs_2625) |
|
|
2870 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2871 | else if (!statfs (w->path, &sfs) |
|
|
2872 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2873 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2874 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2875 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2876 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2877 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2878 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2879 | else |
|
|
2880 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
|
|
2881 | } |
|
|
2882 | else |
|
|
2883 | { |
|
|
2884 | /* can't use inotify, continue to stat */ |
|
|
2885 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2886 | |
|
|
2887 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
2888 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2889 | /* but an efficiency issue only */ |
|
|
2890 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2891 | { |
|
|
2892 | char path [4096]; |
|
|
2893 | strcpy (path, w->path); |
|
|
2894 | |
|
|
2895 | do |
|
|
2896 | { |
|
|
2897 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2898 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2899 | |
|
|
2900 | char *pend = strrchr (path, '/'); |
|
|
2901 | |
|
|
2902 | if (!pend || pend == path) |
|
|
2903 | break; |
|
|
2904 | |
|
|
2905 | *pend = 0; |
|
|
2906 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2907 | } |
|
|
2908 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2909 | } |
|
|
2910 | } |
|
|
2911 | |
|
|
2912 | if (w->wd >= 0) |
|
|
2913 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2914 | |
|
|
2915 | /* now re-arm timer, if required */ |
|
|
2916 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
2917 | ev_timer_again (EV_A_ &w->timer); |
|
|
2918 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
2919 | } |
|
|
2920 | |
|
|
2921 | static void noinline |
|
|
2922 | infy_del (EV_P_ ev_stat *w) |
|
|
2923 | { |
|
|
2924 | int slot; |
|
|
2925 | int wd = w->wd; |
|
|
2926 | |
|
|
2927 | if (wd < 0) |
|
|
2928 | return; |
|
|
2929 | |
|
|
2930 | w->wd = -2; |
|
|
2931 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2932 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2933 | |
|
|
2934 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2935 | inotify_rm_watch (fs_fd, wd); |
|
|
2936 | } |
|
|
2937 | |
|
|
2938 | static void noinline |
|
|
2939 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2940 | { |
|
|
2941 | if (slot < 0) |
|
|
2942 | /* overflow, need to check for all hash slots */ |
|
|
2943 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2944 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2945 | else |
|
|
2946 | { |
|
|
2947 | WL w_; |
|
|
2948 | |
|
|
2949 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2950 | { |
|
|
2951 | ev_stat *w = (ev_stat *)w_; |
|
|
2952 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2953 | |
|
|
2954 | if (w->wd == wd || wd == -1) |
|
|
2955 | { |
|
|
2956 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2957 | { |
|
|
2958 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2959 | w->wd = -1; |
|
|
2960 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2961 | } |
|
|
2962 | |
|
|
2963 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2964 | } |
|
|
2965 | } |
|
|
2966 | } |
|
|
2967 | } |
|
|
2968 | |
|
|
2969 | static void |
|
|
2970 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2971 | { |
|
|
2972 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2973 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2974 | int ofs; |
|
|
2975 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2976 | |
|
|
2977 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2978 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2979 | } |
|
|
2980 | |
|
|
2981 | inline_size void |
|
|
2982 | check_2625 (EV_P) |
|
|
2983 | { |
|
|
2984 | /* kernels < 2.6.25 are borked |
|
|
2985 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2986 | */ |
|
|
2987 | struct utsname buf; |
|
|
2988 | int major, minor, micro; |
|
|
2989 | |
|
|
2990 | if (uname (&buf)) |
|
|
2991 | return; |
|
|
2992 | |
|
|
2993 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2994 | return; |
|
|
2995 | |
|
|
2996 | if (major < 2 |
|
|
2997 | || (major == 2 && minor < 6) |
|
|
2998 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2999 | return; |
|
|
3000 | |
|
|
3001 | fs_2625 = 1; |
|
|
3002 | } |
|
|
3003 | |
|
|
3004 | inline_size int |
|
|
3005 | infy_newfd (void) |
|
|
3006 | { |
|
|
3007 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3008 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3009 | if (fd >= 0) |
|
|
3010 | return fd; |
|
|
3011 | #endif |
|
|
3012 | return inotify_init (); |
|
|
3013 | } |
|
|
3014 | |
|
|
3015 | inline_size void |
|
|
3016 | infy_init (EV_P) |
|
|
3017 | { |
|
|
3018 | if (fs_fd != -2) |
|
|
3019 | return; |
|
|
3020 | |
|
|
3021 | fs_fd = -1; |
|
|
3022 | |
|
|
3023 | check_2625 (EV_A); |
|
|
3024 | |
|
|
3025 | fs_fd = infy_newfd (); |
|
|
3026 | |
|
|
3027 | if (fs_fd >= 0) |
|
|
3028 | { |
|
|
3029 | fd_intern (fs_fd); |
|
|
3030 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
3031 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
3032 | ev_io_start (EV_A_ &fs_w); |
|
|
3033 | ev_unref (EV_A); |
|
|
3034 | } |
|
|
3035 | } |
|
|
3036 | |
|
|
3037 | inline_size void |
|
|
3038 | infy_fork (EV_P) |
|
|
3039 | { |
|
|
3040 | int slot; |
|
|
3041 | |
|
|
3042 | if (fs_fd < 0) |
|
|
3043 | return; |
|
|
3044 | |
|
|
3045 | ev_ref (EV_A); |
|
|
3046 | ev_io_stop (EV_A_ &fs_w); |
|
|
3047 | close (fs_fd); |
|
|
3048 | fs_fd = infy_newfd (); |
|
|
3049 | |
|
|
3050 | if (fs_fd >= 0) |
|
|
3051 | { |
|
|
3052 | fd_intern (fs_fd); |
|
|
3053 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3054 | ev_io_start (EV_A_ &fs_w); |
|
|
3055 | ev_unref (EV_A); |
|
|
3056 | } |
|
|
3057 | |
|
|
3058 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
3059 | { |
|
|
3060 | WL w_ = fs_hash [slot].head; |
|
|
3061 | fs_hash [slot].head = 0; |
|
|
3062 | |
|
|
3063 | while (w_) |
|
|
3064 | { |
|
|
3065 | ev_stat *w = (ev_stat *)w_; |
|
|
3066 | w_ = w_->next; /* lets us add this watcher */ |
|
|
3067 | |
|
|
3068 | w->wd = -1; |
|
|
3069 | |
|
|
3070 | if (fs_fd >= 0) |
|
|
3071 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3072 | else |
|
|
3073 | { |
|
|
3074 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3075 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3076 | ev_timer_again (EV_A_ &w->timer); |
|
|
3077 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3078 | } |
|
|
3079 | } |
|
|
3080 | } |
|
|
3081 | } |
|
|
3082 | |
|
|
3083 | #endif |
|
|
3084 | |
|
|
3085 | #ifdef _WIN32 |
|
|
3086 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
3087 | #else |
|
|
3088 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
3089 | #endif |
|
|
3090 | |
|
|
3091 | void |
|
|
3092 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
3093 | { |
|
|
3094 | if (lstat (w->path, &w->attr) < 0) |
|
|
3095 | w->attr.st_nlink = 0; |
|
|
3096 | else if (!w->attr.st_nlink) |
|
|
3097 | w->attr.st_nlink = 1; |
|
|
3098 | } |
|
|
3099 | |
|
|
3100 | static void noinline |
|
|
3101 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3102 | { |
|
|
3103 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3104 | |
|
|
3105 | /* we copy this here each the time so that */ |
|
|
3106 | /* prev has the old value when the callback gets invoked */ |
|
|
3107 | w->prev = w->attr; |
|
|
3108 | ev_stat_stat (EV_A_ w); |
|
|
3109 | |
|
|
3110 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3111 | if ( |
|
|
3112 | w->prev.st_dev != w->attr.st_dev |
|
|
3113 | || w->prev.st_ino != w->attr.st_ino |
|
|
3114 | || w->prev.st_mode != w->attr.st_mode |
|
|
3115 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
3116 | || w->prev.st_uid != w->attr.st_uid |
|
|
3117 | || w->prev.st_gid != w->attr.st_gid |
|
|
3118 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
3119 | || w->prev.st_size != w->attr.st_size |
|
|
3120 | || w->prev.st_atime != w->attr.st_atime |
|
|
3121 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
3122 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
3123 | ) { |
|
|
3124 | #if EV_USE_INOTIFY |
|
|
3125 | if (fs_fd >= 0) |
|
|
3126 | { |
|
|
3127 | infy_del (EV_A_ w); |
|
|
3128 | infy_add (EV_A_ w); |
|
|
3129 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3130 | } |
|
|
3131 | #endif |
|
|
3132 | |
|
|
3133 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3134 | } |
|
|
3135 | } |
|
|
3136 | |
|
|
3137 | void |
|
|
3138 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
3139 | { |
|
|
3140 | if (expect_false (ev_is_active (w))) |
|
|
3141 | return; |
|
|
3142 | |
|
|
3143 | ev_stat_stat (EV_A_ w); |
|
|
3144 | |
|
|
3145 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3146 | w->interval = MIN_STAT_INTERVAL; |
|
|
3147 | |
|
|
3148 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3149 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3150 | |
|
|
3151 | #if EV_USE_INOTIFY |
|
|
3152 | infy_init (EV_A); |
|
|
3153 | |
|
|
3154 | if (fs_fd >= 0) |
|
|
3155 | infy_add (EV_A_ w); |
|
|
3156 | else |
|
|
3157 | #endif |
|
|
3158 | { |
|
|
3159 | ev_timer_again (EV_A_ &w->timer); |
|
|
3160 | ev_unref (EV_A); |
|
|
3161 | } |
|
|
3162 | |
|
|
3163 | ev_start (EV_A_ (W)w, 1); |
|
|
3164 | |
|
|
3165 | EV_FREQUENT_CHECK; |
|
|
3166 | } |
|
|
3167 | |
|
|
3168 | void |
|
|
3169 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
3170 | { |
|
|
3171 | clear_pending (EV_A_ (W)w); |
|
|
3172 | if (expect_false (!ev_is_active (w))) |
|
|
3173 | return; |
|
|
3174 | |
|
|
3175 | EV_FREQUENT_CHECK; |
|
|
3176 | |
|
|
3177 | #if EV_USE_INOTIFY |
|
|
3178 | infy_del (EV_A_ w); |
|
|
3179 | #endif |
|
|
3180 | |
|
|
3181 | if (ev_is_active (&w->timer)) |
|
|
3182 | { |
|
|
3183 | ev_ref (EV_A); |
|
|
3184 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3185 | } |
|
|
3186 | |
|
|
3187 | ev_stop (EV_A_ (W)w); |
|
|
3188 | |
|
|
3189 | EV_FREQUENT_CHECK; |
|
|
3190 | } |
|
|
3191 | #endif |
|
|
3192 | |
|
|
3193 | #if EV_IDLE_ENABLE |
|
|
3194 | void |
|
|
3195 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
3196 | { |
|
|
3197 | if (expect_false (ev_is_active (w))) |
|
|
3198 | return; |
|
|
3199 | |
|
|
3200 | pri_adjust (EV_A_ (W)w); |
|
|
3201 | |
|
|
3202 | EV_FREQUENT_CHECK; |
|
|
3203 | |
|
|
3204 | { |
|
|
3205 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3206 | |
|
|
3207 | ++idleall; |
|
|
3208 | ev_start (EV_A_ (W)w, active); |
|
|
3209 | |
|
|
3210 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
3211 | idles [ABSPRI (w)][active - 1] = w; |
|
|
3212 | } |
|
|
3213 | |
|
|
3214 | EV_FREQUENT_CHECK; |
|
|
3215 | } |
|
|
3216 | |
|
|
3217 | void |
|
|
3218 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3219 | { |
|
|
3220 | clear_pending (EV_A_ (W)w); |
|
|
3221 | if (expect_false (!ev_is_active (w))) |
|
|
3222 | return; |
|
|
3223 | |
|
|
3224 | EV_FREQUENT_CHECK; |
|
|
3225 | |
|
|
3226 | { |
|
|
3227 | int active = ev_active (w); |
|
|
3228 | |
|
|
3229 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3230 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3231 | |
|
|
3232 | ev_stop (EV_A_ (W)w); |
|
|
3233 | --idleall; |
|
|
3234 | } |
|
|
3235 | |
|
|
3236 | EV_FREQUENT_CHECK; |
|
|
3237 | } |
|
|
3238 | #endif |
|
|
3239 | |
|
|
3240 | void |
|
|
3241 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3242 | { |
|
|
3243 | if (expect_false (ev_is_active (w))) |
|
|
3244 | return; |
|
|
3245 | |
|
|
3246 | EV_FREQUENT_CHECK; |
1580 | |
3247 | |
1581 | ev_start (EV_A_ (W)w, ++preparecnt); |
3248 | ev_start (EV_A_ (W)w, ++preparecnt); |
1582 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
3249 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
1583 | prepares [preparecnt - 1] = w; |
3250 | prepares [preparecnt - 1] = w; |
|
|
3251 | |
|
|
3252 | EV_FREQUENT_CHECK; |
1584 | } |
3253 | } |
1585 | |
3254 | |
1586 | void |
3255 | void |
1587 | ev_prepare_stop (EV_P_ ev_prepare *w) |
3256 | ev_prepare_stop (EV_P_ ev_prepare *w) |
1588 | { |
3257 | { |
1589 | ev_clear_pending (EV_A_ (W)w); |
3258 | clear_pending (EV_A_ (W)w); |
1590 | if (expect_false (!ev_is_active (w))) |
3259 | if (expect_false (!ev_is_active (w))) |
1591 | return; |
3260 | return; |
1592 | |
3261 | |
|
|
3262 | EV_FREQUENT_CHECK; |
|
|
3263 | |
1593 | { |
3264 | { |
1594 | int active = ((W)w)->active; |
3265 | int active = ev_active (w); |
|
|
3266 | |
1595 | prepares [active - 1] = prepares [--preparecnt]; |
3267 | prepares [active - 1] = prepares [--preparecnt]; |
1596 | ((W)prepares [active - 1])->active = active; |
3268 | ev_active (prepares [active - 1]) = active; |
1597 | } |
3269 | } |
1598 | |
3270 | |
1599 | ev_stop (EV_A_ (W)w); |
3271 | ev_stop (EV_A_ (W)w); |
|
|
3272 | |
|
|
3273 | EV_FREQUENT_CHECK; |
1600 | } |
3274 | } |
1601 | |
3275 | |
1602 | void |
3276 | void |
1603 | ev_check_start (EV_P_ ev_check *w) |
3277 | ev_check_start (EV_P_ ev_check *w) |
1604 | { |
3278 | { |
1605 | if (expect_false (ev_is_active (w))) |
3279 | if (expect_false (ev_is_active (w))) |
1606 | return; |
3280 | return; |
|
|
3281 | |
|
|
3282 | EV_FREQUENT_CHECK; |
1607 | |
3283 | |
1608 | ev_start (EV_A_ (W)w, ++checkcnt); |
3284 | ev_start (EV_A_ (W)w, ++checkcnt); |
1609 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
3285 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
1610 | checks [checkcnt - 1] = w; |
3286 | checks [checkcnt - 1] = w; |
|
|
3287 | |
|
|
3288 | EV_FREQUENT_CHECK; |
1611 | } |
3289 | } |
1612 | |
3290 | |
1613 | void |
3291 | void |
1614 | ev_check_stop (EV_P_ ev_check *w) |
3292 | ev_check_stop (EV_P_ ev_check *w) |
1615 | { |
3293 | { |
1616 | ev_clear_pending (EV_A_ (W)w); |
3294 | clear_pending (EV_A_ (W)w); |
1617 | if (expect_false (!ev_is_active (w))) |
3295 | if (expect_false (!ev_is_active (w))) |
1618 | return; |
3296 | return; |
1619 | |
3297 | |
|
|
3298 | EV_FREQUENT_CHECK; |
|
|
3299 | |
1620 | { |
3300 | { |
1621 | int active = ((W)w)->active; |
3301 | int active = ev_active (w); |
|
|
3302 | |
1622 | checks [active - 1] = checks [--checkcnt]; |
3303 | checks [active - 1] = checks [--checkcnt]; |
1623 | ((W)checks [active - 1])->active = active; |
3304 | ev_active (checks [active - 1]) = active; |
1624 | } |
3305 | } |
1625 | |
3306 | |
1626 | ev_stop (EV_A_ (W)w); |
3307 | ev_stop (EV_A_ (W)w); |
1627 | } |
|
|
1628 | |
3308 | |
1629 | #ifndef SA_RESTART |
3309 | EV_FREQUENT_CHECK; |
1630 | # define SA_RESTART 0 |
|
|
1631 | #endif |
|
|
1632 | |
|
|
1633 | void |
|
|
1634 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
1635 | { |
|
|
1636 | #if EV_MULTIPLICITY |
|
|
1637 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1638 | #endif |
|
|
1639 | if (expect_false (ev_is_active (w))) |
|
|
1640 | return; |
|
|
1641 | |
|
|
1642 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1643 | |
|
|
1644 | ev_start (EV_A_ (W)w, 1); |
|
|
1645 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1646 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1647 | |
|
|
1648 | if (!((WL)w)->next) |
|
|
1649 | { |
|
|
1650 | #if _WIN32 |
|
|
1651 | signal (w->signum, sighandler); |
|
|
1652 | #else |
|
|
1653 | struct sigaction sa; |
|
|
1654 | sa.sa_handler = sighandler; |
|
|
1655 | sigfillset (&sa.sa_mask); |
|
|
1656 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1657 | sigaction (w->signum, &sa, 0); |
|
|
1658 | #endif |
|
|
1659 | } |
|
|
1660 | } |
3310 | } |
1661 | |
3311 | |
1662 | void |
3312 | #if EV_EMBED_ENABLE |
1663 | ev_signal_stop (EV_P_ ev_signal *w) |
3313 | void noinline |
1664 | { |
|
|
1665 | ev_clear_pending (EV_A_ (W)w); |
|
|
1666 | if (expect_false (!ev_is_active (w))) |
|
|
1667 | return; |
|
|
1668 | |
|
|
1669 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1670 | ev_stop (EV_A_ (W)w); |
|
|
1671 | |
|
|
1672 | if (!signals [w->signum - 1].head) |
|
|
1673 | signal (w->signum, SIG_DFL); |
|
|
1674 | } |
|
|
1675 | |
|
|
1676 | void |
|
|
1677 | ev_child_start (EV_P_ ev_child *w) |
|
|
1678 | { |
|
|
1679 | #if EV_MULTIPLICITY |
|
|
1680 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1681 | #endif |
|
|
1682 | if (expect_false (ev_is_active (w))) |
|
|
1683 | return; |
|
|
1684 | |
|
|
1685 | ev_start (EV_A_ (W)w, 1); |
|
|
1686 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1687 | } |
|
|
1688 | |
|
|
1689 | void |
|
|
1690 | ev_child_stop (EV_P_ ev_child *w) |
|
|
1691 | { |
|
|
1692 | ev_clear_pending (EV_A_ (W)w); |
|
|
1693 | if (expect_false (!ev_is_active (w))) |
|
|
1694 | return; |
|
|
1695 | |
|
|
1696 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1697 | ev_stop (EV_A_ (W)w); |
|
|
1698 | } |
|
|
1699 | |
|
|
1700 | #if EV_MULTIPLICITY |
|
|
1701 | void |
|
|
1702 | ev_embed_sweep (EV_P_ ev_embed *w) |
3314 | ev_embed_sweep (EV_P_ ev_embed *w) |
1703 | { |
3315 | { |
1704 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
3316 | ev_loop (w->other, EVLOOP_NONBLOCK); |
1705 | } |
3317 | } |
1706 | |
3318 | |
1707 | static void |
3319 | static void |
1708 | embed_cb (EV_P_ ev_io *io, int revents) |
3320 | embed_io_cb (EV_P_ ev_io *io, int revents) |
1709 | { |
3321 | { |
1710 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3322 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
1711 | |
3323 | |
1712 | if (ev_cb (w)) |
3324 | if (ev_cb (w)) |
1713 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3325 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
1714 | else |
3326 | else |
1715 | ev_embed_sweep (loop, w); |
3327 | ev_loop (w->other, EVLOOP_NONBLOCK); |
1716 | } |
3328 | } |
|
|
3329 | |
|
|
3330 | static void |
|
|
3331 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3332 | { |
|
|
3333 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3334 | |
|
|
3335 | { |
|
|
3336 | EV_P = w->other; |
|
|
3337 | |
|
|
3338 | while (fdchangecnt) |
|
|
3339 | { |
|
|
3340 | fd_reify (EV_A); |
|
|
3341 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3342 | } |
|
|
3343 | } |
|
|
3344 | } |
|
|
3345 | |
|
|
3346 | static void |
|
|
3347 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3348 | { |
|
|
3349 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3350 | |
|
|
3351 | ev_embed_stop (EV_A_ w); |
|
|
3352 | |
|
|
3353 | { |
|
|
3354 | EV_P = w->other; |
|
|
3355 | |
|
|
3356 | ev_loop_fork (EV_A); |
|
|
3357 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3358 | } |
|
|
3359 | |
|
|
3360 | ev_embed_start (EV_A_ w); |
|
|
3361 | } |
|
|
3362 | |
|
|
3363 | #if 0 |
|
|
3364 | static void |
|
|
3365 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3366 | { |
|
|
3367 | ev_idle_stop (EV_A_ idle); |
|
|
3368 | } |
|
|
3369 | #endif |
1717 | |
3370 | |
1718 | void |
3371 | void |
1719 | ev_embed_start (EV_P_ ev_embed *w) |
3372 | ev_embed_start (EV_P_ ev_embed *w) |
1720 | { |
3373 | { |
1721 | if (expect_false (ev_is_active (w))) |
3374 | if (expect_false (ev_is_active (w))) |
1722 | return; |
3375 | return; |
1723 | |
3376 | |
1724 | { |
3377 | { |
1725 | struct ev_loop *loop = w->loop; |
3378 | EV_P = w->other; |
1726 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
3379 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
1727 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
3380 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
1728 | } |
3381 | } |
|
|
3382 | |
|
|
3383 | EV_FREQUENT_CHECK; |
1729 | |
3384 | |
1730 | ev_set_priority (&w->io, ev_priority (w)); |
3385 | ev_set_priority (&w->io, ev_priority (w)); |
1731 | ev_io_start (EV_A_ &w->io); |
3386 | ev_io_start (EV_A_ &w->io); |
|
|
3387 | |
|
|
3388 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3389 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3390 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3391 | |
|
|
3392 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3393 | ev_fork_start (EV_A_ &w->fork); |
|
|
3394 | |
|
|
3395 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3396 | |
1732 | ev_start (EV_A_ (W)w, 1); |
3397 | ev_start (EV_A_ (W)w, 1); |
|
|
3398 | |
|
|
3399 | EV_FREQUENT_CHECK; |
1733 | } |
3400 | } |
1734 | |
3401 | |
1735 | void |
3402 | void |
1736 | ev_embed_stop (EV_P_ ev_embed *w) |
3403 | ev_embed_stop (EV_P_ ev_embed *w) |
1737 | { |
3404 | { |
1738 | ev_clear_pending (EV_A_ (W)w); |
3405 | clear_pending (EV_A_ (W)w); |
1739 | if (expect_false (!ev_is_active (w))) |
3406 | if (expect_false (!ev_is_active (w))) |
1740 | return; |
3407 | return; |
1741 | |
3408 | |
|
|
3409 | EV_FREQUENT_CHECK; |
|
|
3410 | |
1742 | ev_io_stop (EV_A_ &w->io); |
3411 | ev_io_stop (EV_A_ &w->io); |
|
|
3412 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3413 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3414 | |
|
|
3415 | EV_FREQUENT_CHECK; |
|
|
3416 | } |
|
|
3417 | #endif |
|
|
3418 | |
|
|
3419 | #if EV_FORK_ENABLE |
|
|
3420 | void |
|
|
3421 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3422 | { |
|
|
3423 | if (expect_false (ev_is_active (w))) |
|
|
3424 | return; |
|
|
3425 | |
|
|
3426 | EV_FREQUENT_CHECK; |
|
|
3427 | |
|
|
3428 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3429 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3430 | forks [forkcnt - 1] = w; |
|
|
3431 | |
|
|
3432 | EV_FREQUENT_CHECK; |
|
|
3433 | } |
|
|
3434 | |
|
|
3435 | void |
|
|
3436 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3437 | { |
|
|
3438 | clear_pending (EV_A_ (W)w); |
|
|
3439 | if (expect_false (!ev_is_active (w))) |
|
|
3440 | return; |
|
|
3441 | |
|
|
3442 | EV_FREQUENT_CHECK; |
|
|
3443 | |
|
|
3444 | { |
|
|
3445 | int active = ev_active (w); |
|
|
3446 | |
|
|
3447 | forks [active - 1] = forks [--forkcnt]; |
|
|
3448 | ev_active (forks [active - 1]) = active; |
|
|
3449 | } |
|
|
3450 | |
1743 | ev_stop (EV_A_ (W)w); |
3451 | ev_stop (EV_A_ (W)w); |
|
|
3452 | |
|
|
3453 | EV_FREQUENT_CHECK; |
|
|
3454 | } |
|
|
3455 | #endif |
|
|
3456 | |
|
|
3457 | #if EV_ASYNC_ENABLE |
|
|
3458 | void |
|
|
3459 | ev_async_start (EV_P_ ev_async *w) |
|
|
3460 | { |
|
|
3461 | if (expect_false (ev_is_active (w))) |
|
|
3462 | return; |
|
|
3463 | |
|
|
3464 | evpipe_init (EV_A); |
|
|
3465 | |
|
|
3466 | EV_FREQUENT_CHECK; |
|
|
3467 | |
|
|
3468 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3469 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3470 | asyncs [asynccnt - 1] = w; |
|
|
3471 | |
|
|
3472 | EV_FREQUENT_CHECK; |
|
|
3473 | } |
|
|
3474 | |
|
|
3475 | void |
|
|
3476 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3477 | { |
|
|
3478 | clear_pending (EV_A_ (W)w); |
|
|
3479 | if (expect_false (!ev_is_active (w))) |
|
|
3480 | return; |
|
|
3481 | |
|
|
3482 | EV_FREQUENT_CHECK; |
|
|
3483 | |
|
|
3484 | { |
|
|
3485 | int active = ev_active (w); |
|
|
3486 | |
|
|
3487 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3488 | ev_active (asyncs [active - 1]) = active; |
|
|
3489 | } |
|
|
3490 | |
|
|
3491 | ev_stop (EV_A_ (W)w); |
|
|
3492 | |
|
|
3493 | EV_FREQUENT_CHECK; |
|
|
3494 | } |
|
|
3495 | |
|
|
3496 | void |
|
|
3497 | ev_async_send (EV_P_ ev_async *w) |
|
|
3498 | { |
|
|
3499 | w->sent = 1; |
|
|
3500 | evpipe_write (EV_A_ &async_pending); |
1744 | } |
3501 | } |
1745 | #endif |
3502 | #endif |
1746 | |
3503 | |
1747 | /*****************************************************************************/ |
3504 | /*****************************************************************************/ |
1748 | |
3505 | |
… | |
… | |
1758 | once_cb (EV_P_ struct ev_once *once, int revents) |
3515 | once_cb (EV_P_ struct ev_once *once, int revents) |
1759 | { |
3516 | { |
1760 | void (*cb)(int revents, void *arg) = once->cb; |
3517 | void (*cb)(int revents, void *arg) = once->cb; |
1761 | void *arg = once->arg; |
3518 | void *arg = once->arg; |
1762 | |
3519 | |
1763 | ev_io_stop (EV_A_ &once->io); |
3520 | ev_io_stop (EV_A_ &once->io); |
1764 | ev_timer_stop (EV_A_ &once->to); |
3521 | ev_timer_stop (EV_A_ &once->to); |
1765 | ev_free (once); |
3522 | ev_free (once); |
1766 | |
3523 | |
1767 | cb (revents, arg); |
3524 | cb (revents, arg); |
1768 | } |
3525 | } |
1769 | |
3526 | |
1770 | static void |
3527 | static void |
1771 | once_cb_io (EV_P_ ev_io *w, int revents) |
3528 | once_cb_io (EV_P_ ev_io *w, int revents) |
1772 | { |
3529 | { |
1773 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3530 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3531 | |
|
|
3532 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1774 | } |
3533 | } |
1775 | |
3534 | |
1776 | static void |
3535 | static void |
1777 | once_cb_to (EV_P_ ev_timer *w, int revents) |
3536 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1778 | { |
3537 | { |
1779 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3538 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
3539 | |
|
|
3540 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1780 | } |
3541 | } |
1781 | |
3542 | |
1782 | void |
3543 | void |
1783 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3544 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1784 | { |
3545 | { |
… | |
… | |
1806 | ev_timer_set (&once->to, timeout, 0.); |
3567 | ev_timer_set (&once->to, timeout, 0.); |
1807 | ev_timer_start (EV_A_ &once->to); |
3568 | ev_timer_start (EV_A_ &once->to); |
1808 | } |
3569 | } |
1809 | } |
3570 | } |
1810 | |
3571 | |
|
|
3572 | /*****************************************************************************/ |
|
|
3573 | |
|
|
3574 | #if EV_WALK_ENABLE |
|
|
3575 | void |
|
|
3576 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3577 | { |
|
|
3578 | int i, j; |
|
|
3579 | ev_watcher_list *wl, *wn; |
|
|
3580 | |
|
|
3581 | if (types & (EV_IO | EV_EMBED)) |
|
|
3582 | for (i = 0; i < anfdmax; ++i) |
|
|
3583 | for (wl = anfds [i].head; wl; ) |
|
|
3584 | { |
|
|
3585 | wn = wl->next; |
|
|
3586 | |
|
|
3587 | #if EV_EMBED_ENABLE |
|
|
3588 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3589 | { |
|
|
3590 | if (types & EV_EMBED) |
|
|
3591 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3592 | } |
|
|
3593 | else |
|
|
3594 | #endif |
|
|
3595 | #if EV_USE_INOTIFY |
|
|
3596 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3597 | ; |
|
|
3598 | else |
|
|
3599 | #endif |
|
|
3600 | if ((ev_io *)wl != &pipe_w) |
|
|
3601 | if (types & EV_IO) |
|
|
3602 | cb (EV_A_ EV_IO, wl); |
|
|
3603 | |
|
|
3604 | wl = wn; |
|
|
3605 | } |
|
|
3606 | |
|
|
3607 | if (types & (EV_TIMER | EV_STAT)) |
|
|
3608 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3609 | #if EV_STAT_ENABLE |
|
|
3610 | /*TODO: timer is not always active*/ |
|
|
3611 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
|
|
3612 | { |
|
|
3613 | if (types & EV_STAT) |
|
|
3614 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
|
|
3615 | } |
|
|
3616 | else |
|
|
3617 | #endif |
|
|
3618 | if (types & EV_TIMER) |
|
|
3619 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
|
|
3620 | |
|
|
3621 | #if EV_PERIODIC_ENABLE |
|
|
3622 | if (types & EV_PERIODIC) |
|
|
3623 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3624 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3625 | #endif |
|
|
3626 | |
|
|
3627 | #if EV_IDLE_ENABLE |
|
|
3628 | if (types & EV_IDLE) |
|
|
3629 | for (j = NUMPRI; i--; ) |
|
|
3630 | for (i = idlecnt [j]; i--; ) |
|
|
3631 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3632 | #endif |
|
|
3633 | |
|
|
3634 | #if EV_FORK_ENABLE |
|
|
3635 | if (types & EV_FORK) |
|
|
3636 | for (i = forkcnt; i--; ) |
|
|
3637 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3638 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3639 | #endif |
|
|
3640 | |
|
|
3641 | #if EV_ASYNC_ENABLE |
|
|
3642 | if (types & EV_ASYNC) |
|
|
3643 | for (i = asynccnt; i--; ) |
|
|
3644 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
3645 | #endif |
|
|
3646 | |
|
|
3647 | if (types & EV_PREPARE) |
|
|
3648 | for (i = preparecnt; i--; ) |
|
|
3649 | #if EV_EMBED_ENABLE |
|
|
3650 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
3651 | #endif |
|
|
3652 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
3653 | |
|
|
3654 | if (types & EV_CHECK) |
|
|
3655 | for (i = checkcnt; i--; ) |
|
|
3656 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
3657 | |
|
|
3658 | if (types & EV_SIGNAL) |
|
|
3659 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
3660 | for (wl = signals [i].head; wl; ) |
|
|
3661 | { |
|
|
3662 | wn = wl->next; |
|
|
3663 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
3664 | wl = wn; |
|
|
3665 | } |
|
|
3666 | |
|
|
3667 | if (types & EV_CHILD) |
|
|
3668 | for (i = EV_PID_HASHSIZE; i--; ) |
|
|
3669 | for (wl = childs [i]; wl; ) |
|
|
3670 | { |
|
|
3671 | wn = wl->next; |
|
|
3672 | cb (EV_A_ EV_CHILD, wl); |
|
|
3673 | wl = wn; |
|
|
3674 | } |
|
|
3675 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
3676 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
3677 | } |
|
|
3678 | #endif |
|
|
3679 | |
|
|
3680 | #if EV_MULTIPLICITY |
|
|
3681 | #include "ev_wrap.h" |
|
|
3682 | #endif |
|
|
3683 | |
1811 | #ifdef __cplusplus |
3684 | #ifdef __cplusplus |
1812 | } |
3685 | } |
1813 | #endif |
3686 | #endif |
1814 | |
3687 | |