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 |
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46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
37 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_SYSCALL |
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53 | # ifndef EV_USE_CLOCK_SYSCALL |
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54 | # define EV_USE_CLOCK_SYSCALL 1 |
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55 | # ifndef EV_USE_REALTIME |
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56 | # define EV_USE_REALTIME 0 |
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57 | # endif |
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58 | # ifndef EV_USE_MONOTONIC |
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59 | # define EV_USE_MONOTONIC 1 |
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60 | # endif |
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61 | # endif |
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62 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
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63 | # define EV_USE_CLOCK_SYSCALL 0 |
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64 | # endif |
38 | |
65 | |
39 | # if HAVE_CLOCK_GETTIME |
66 | # if HAVE_CLOCK_GETTIME |
40 | # ifndef EV_USE_MONOTONIC |
67 | # ifndef EV_USE_MONOTONIC |
41 | # define EV_USE_MONOTONIC 1 |
68 | # define EV_USE_MONOTONIC 1 |
42 | # endif |
69 | # endif |
43 | # ifndef EV_USE_REALTIME |
70 | # ifndef EV_USE_REALTIME |
44 | # define EV_USE_REALTIME 1 |
71 | # define EV_USE_REALTIME 0 |
45 | # endif |
72 | # endif |
46 | # else |
73 | # else |
47 | # ifndef EV_USE_MONOTONIC |
74 | # ifndef EV_USE_MONOTONIC |
48 | # define EV_USE_MONOTONIC 0 |
75 | # define EV_USE_MONOTONIC 0 |
49 | # endif |
76 | # endif |
50 | # ifndef EV_USE_REALTIME |
77 | # ifndef EV_USE_REALTIME |
51 | # define EV_USE_REALTIME 0 |
78 | # define EV_USE_REALTIME 0 |
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79 | # endif |
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80 | # endif |
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81 | |
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82 | # ifndef EV_USE_NANOSLEEP |
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83 | # if HAVE_NANOSLEEP |
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84 | # define EV_USE_NANOSLEEP 1 |
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85 | # else |
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86 | # define EV_USE_NANOSLEEP 0 |
52 | # endif |
87 | # endif |
53 | # endif |
88 | # endif |
54 | |
89 | |
55 | # ifndef EV_USE_SELECT |
90 | # ifndef EV_USE_SELECT |
56 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
… | |
… | |
90 | # else |
125 | # else |
91 | # define EV_USE_PORT 0 |
126 | # define EV_USE_PORT 0 |
92 | # endif |
127 | # endif |
93 | # endif |
128 | # endif |
94 | |
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 | |
95 | #endif |
154 | #endif |
96 | |
155 | |
97 | #include <math.h> |
156 | #include <math.h> |
98 | #include <stdlib.h> |
157 | #include <stdlib.h> |
99 | #include <fcntl.h> |
158 | #include <fcntl.h> |
… | |
… | |
106 | #include <sys/types.h> |
165 | #include <sys/types.h> |
107 | #include <time.h> |
166 | #include <time.h> |
108 | |
167 | |
109 | #include <signal.h> |
168 | #include <signal.h> |
110 | |
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 | |
111 | #ifndef _WIN32 |
176 | #ifndef _WIN32 |
112 | # include <unistd.h> |
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113 | # include <sys/time.h> |
177 | # include <sys/time.h> |
114 | # include <sys/wait.h> |
178 | # include <sys/wait.h> |
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179 | # include <unistd.h> |
115 | #else |
180 | #else |
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181 | # include <io.h> |
116 | # define WIN32_LEAN_AND_MEAN |
182 | # define WIN32_LEAN_AND_MEAN |
117 | # include <windows.h> |
183 | # include <windows.h> |
118 | # ifndef EV_SELECT_IS_WINSOCKET |
184 | # ifndef EV_SELECT_IS_WINSOCKET |
119 | # define EV_SELECT_IS_WINSOCKET 1 |
185 | # define EV_SELECT_IS_WINSOCKET 1 |
120 | # endif |
186 | # endif |
121 | #endif |
187 | #endif |
122 | |
188 | |
123 | /**/ |
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 | /* one some platforms, NSIG is one too large. we do not bother */ |
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193 | #if defined (EV_NSIG) |
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194 | /* use what's provided */ |
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195 | #elif defined (NSIG) |
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196 | # define EV_NSIG (NSIG) |
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197 | #elif defined(_NSIG) |
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198 | # define EV_NSIG (_NSIG) |
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199 | #elif defined (SIGMAX) |
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200 | # define EV_NSIG (SIGMAX+1) |
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201 | #elif defined (SIG_MAX) |
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202 | # define EV_NSIG (SIG_MAX+1) |
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203 | #elif defined (_SIG_MAX) |
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204 | # define EV_NSIG (_SIG_MAX+1) |
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205 | #elif defined (MAXSIG) |
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206 | # define EV_NSIG (MAXSIG+1) |
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207 | #elif defined (MAX_SIG) |
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208 | # define EV_NSIG (MAX_SIG+1) |
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209 | #elif defined (SIGARRAYSIZE) |
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210 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
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211 | #elif defined (_sys_nsig) |
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212 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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213 | #else |
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214 | # error "unable to find value for NSIG, please report" |
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215 | /* to make it compile regardless, just remove the above line */ |
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216 | # define EV_NSIG 65 |
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217 | #endif |
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218 | |
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219 | #ifndef EV_USE_CLOCK_SYSCALL |
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220 | # if __linux && __GLIBC__ >= 2 |
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221 | # define EV_USE_CLOCK_SYSCALL 1 |
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222 | # else |
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223 | # define EV_USE_CLOCK_SYSCALL 0 |
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224 | # endif |
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225 | #endif |
124 | |
226 | |
125 | #ifndef EV_USE_MONOTONIC |
227 | #ifndef EV_USE_MONOTONIC |
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228 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
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229 | # define EV_USE_MONOTONIC 1 |
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230 | # else |
126 | # define EV_USE_MONOTONIC 0 |
231 | # define EV_USE_MONOTONIC 0 |
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232 | # endif |
127 | #endif |
233 | #endif |
128 | |
234 | |
129 | #ifndef EV_USE_REALTIME |
235 | #ifndef EV_USE_REALTIME |
130 | # define EV_USE_REALTIME 0 |
236 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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237 | #endif |
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238 | |
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239 | #ifndef EV_USE_NANOSLEEP |
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240 | # if _POSIX_C_SOURCE >= 199309L |
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241 | # define EV_USE_NANOSLEEP 1 |
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242 | # else |
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243 | # define EV_USE_NANOSLEEP 0 |
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244 | # endif |
131 | #endif |
245 | #endif |
132 | |
246 | |
133 | #ifndef EV_USE_SELECT |
247 | #ifndef EV_USE_SELECT |
134 | # define EV_USE_SELECT 1 |
248 | # define EV_USE_SELECT 1 |
135 | #endif |
249 | #endif |
… | |
… | |
141 | # define EV_USE_POLL 1 |
255 | # define EV_USE_POLL 1 |
142 | # endif |
256 | # endif |
143 | #endif |
257 | #endif |
144 | |
258 | |
145 | #ifndef EV_USE_EPOLL |
259 | #ifndef EV_USE_EPOLL |
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260 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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261 | # define EV_USE_EPOLL 1 |
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262 | # else |
146 | # define EV_USE_EPOLL 0 |
263 | # define EV_USE_EPOLL 0 |
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264 | # endif |
147 | #endif |
265 | #endif |
148 | |
266 | |
149 | #ifndef EV_USE_KQUEUE |
267 | #ifndef EV_USE_KQUEUE |
150 | # define EV_USE_KQUEUE 0 |
268 | # define EV_USE_KQUEUE 0 |
151 | #endif |
269 | #endif |
152 | |
270 | |
153 | #ifndef EV_USE_PORT |
271 | #ifndef EV_USE_PORT |
154 | # define EV_USE_PORT 0 |
272 | # define EV_USE_PORT 0 |
155 | #endif |
273 | #endif |
156 | |
274 | |
157 | /**/ |
275 | #ifndef EV_USE_INOTIFY |
158 | |
276 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
159 | /* darwin simply cannot be helped */ |
277 | # define EV_USE_INOTIFY 1 |
160 | #ifdef __APPLE__ |
278 | # else |
161 | # undef EV_USE_POLL |
279 | # define EV_USE_INOTIFY 0 |
162 | # undef EV_USE_KQUEUE |
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163 | #endif |
280 | # endif |
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281 | #endif |
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282 | |
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283 | #ifndef EV_PID_HASHSIZE |
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284 | # if EV_MINIMAL |
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285 | # define EV_PID_HASHSIZE 1 |
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286 | # else |
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287 | # define EV_PID_HASHSIZE 16 |
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288 | # endif |
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289 | #endif |
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290 | |
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291 | #ifndef EV_INOTIFY_HASHSIZE |
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292 | # if EV_MINIMAL |
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293 | # define EV_INOTIFY_HASHSIZE 1 |
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294 | # else |
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295 | # define EV_INOTIFY_HASHSIZE 16 |
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296 | # endif |
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297 | #endif |
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298 | |
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299 | #ifndef EV_USE_EVENTFD |
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300 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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301 | # define EV_USE_EVENTFD 1 |
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302 | # else |
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303 | # define EV_USE_EVENTFD 0 |
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304 | # endif |
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305 | #endif |
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306 | |
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307 | #ifndef EV_USE_SIGNALFD |
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308 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) |
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309 | # define EV_USE_SIGNALFD 1 |
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310 | # else |
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311 | # define EV_USE_SIGNALFD 0 |
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312 | # endif |
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313 | #endif |
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314 | |
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315 | #if 0 /* debugging */ |
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316 | # define EV_VERIFY 3 |
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317 | # define EV_USE_4HEAP 1 |
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318 | # define EV_HEAP_CACHE_AT 1 |
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319 | #endif |
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320 | |
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321 | #ifndef EV_VERIFY |
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322 | # define EV_VERIFY !EV_MINIMAL |
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323 | #endif |
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324 | |
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325 | #ifndef EV_USE_4HEAP |
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326 | # define EV_USE_4HEAP !EV_MINIMAL |
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327 | #endif |
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328 | |
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329 | #ifndef EV_HEAP_CACHE_AT |
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330 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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331 | #endif |
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332 | |
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333 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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334 | /* which makes programs even slower. might work on other unices, too. */ |
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335 | #if EV_USE_CLOCK_SYSCALL |
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336 | # include <syscall.h> |
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337 | # ifdef SYS_clock_gettime |
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338 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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339 | # undef EV_USE_MONOTONIC |
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340 | # define EV_USE_MONOTONIC 1 |
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341 | # else |
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342 | # undef EV_USE_CLOCK_SYSCALL |
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343 | # define EV_USE_CLOCK_SYSCALL 0 |
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344 | # endif |
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345 | #endif |
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346 | |
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347 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
164 | |
348 | |
165 | #ifndef CLOCK_MONOTONIC |
349 | #ifndef CLOCK_MONOTONIC |
166 | # undef EV_USE_MONOTONIC |
350 | # undef EV_USE_MONOTONIC |
167 | # define EV_USE_MONOTONIC 0 |
351 | # define EV_USE_MONOTONIC 0 |
168 | #endif |
352 | #endif |
… | |
… | |
170 | #ifndef CLOCK_REALTIME |
354 | #ifndef CLOCK_REALTIME |
171 | # undef EV_USE_REALTIME |
355 | # undef EV_USE_REALTIME |
172 | # define EV_USE_REALTIME 0 |
356 | # define EV_USE_REALTIME 0 |
173 | #endif |
357 | #endif |
174 | |
358 | |
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359 | #if !EV_STAT_ENABLE |
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360 | # undef EV_USE_INOTIFY |
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361 | # define EV_USE_INOTIFY 0 |
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362 | #endif |
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363 | |
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364 | #if !EV_USE_NANOSLEEP |
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365 | # ifndef _WIN32 |
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366 | # include <sys/select.h> |
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367 | # endif |
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368 | #endif |
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369 | |
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370 | #if EV_USE_INOTIFY |
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371 | # include <sys/utsname.h> |
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372 | # include <sys/statfs.h> |
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373 | # include <sys/inotify.h> |
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374 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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375 | # ifndef IN_DONT_FOLLOW |
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376 | # undef EV_USE_INOTIFY |
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377 | # define EV_USE_INOTIFY 0 |
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378 | # endif |
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379 | #endif |
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380 | |
175 | #if EV_SELECT_IS_WINSOCKET |
381 | #if EV_SELECT_IS_WINSOCKET |
176 | # include <winsock.h> |
382 | # include <winsock.h> |
177 | #endif |
383 | #endif |
178 | |
384 | |
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385 | #if EV_USE_EVENTFD |
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386 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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387 | # include <stdint.h> |
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388 | # ifndef EFD_NONBLOCK |
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389 | # define EFD_NONBLOCK O_NONBLOCK |
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390 | # endif |
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391 | # ifndef EFD_CLOEXEC |
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392 | # define EFD_CLOEXEC O_CLOEXEC |
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393 | # endif |
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394 | # ifdef __cplusplus |
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395 | extern "C" { |
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396 | # endif |
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397 | int eventfd (unsigned int initval, int flags); |
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398 | # ifdef __cplusplus |
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399 | } |
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400 | # endif |
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401 | #endif |
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402 | |
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403 | #if EV_USE_SIGNALFD |
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404 | # include <sys/signalfd.h> |
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405 | #endif |
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406 | |
179 | /**/ |
407 | /**/ |
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408 | |
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409 | #if EV_VERIFY >= 3 |
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410 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
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411 | #else |
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412 | # define EV_FREQUENT_CHECK do { } while (0) |
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413 | #endif |
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414 | |
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415 | /* |
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416 | * This is used to avoid floating point rounding problems. |
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417 | * It is added to ev_rt_now when scheduling periodics |
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418 | * to ensure progress, time-wise, even when rounding |
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419 | * errors are against us. |
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420 | * This value is good at least till the year 4000. |
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421 | * Better solutions welcome. |
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422 | */ |
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423 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
180 | |
424 | |
181 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
425 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
182 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
426 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
183 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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184 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
427 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
185 | |
428 | |
186 | #ifdef EV_H |
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187 | # include EV_H |
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188 | #else |
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189 | # include "ev.h" |
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190 | #endif |
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191 | |
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|
192 | #if __GNUC__ >= 3 |
429 | #if __GNUC__ >= 4 |
193 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
430 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
194 | # define inline static inline |
431 | # define noinline __attribute__ ((noinline)) |
195 | #else |
432 | #else |
196 | # define expect(expr,value) (expr) |
433 | # define expect(expr,value) (expr) |
197 | # define inline static |
434 | # define noinline |
|
|
435 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
436 | # define inline |
|
|
437 | # endif |
198 | #endif |
438 | #endif |
199 | |
439 | |
200 | #define expect_false(expr) expect ((expr) != 0, 0) |
440 | #define expect_false(expr) expect ((expr) != 0, 0) |
201 | #define expect_true(expr) expect ((expr) != 0, 1) |
441 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
442 | #define inline_size static inline |
202 | |
443 | |
|
|
444 | #if EV_MINIMAL |
|
|
445 | # define inline_speed static noinline |
|
|
446 | #else |
|
|
447 | # define inline_speed static inline |
|
|
448 | #endif |
|
|
449 | |
203 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
450 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
451 | |
|
|
452 | #if EV_MINPRI == EV_MAXPRI |
|
|
453 | # define ABSPRI(w) (((W)w), 0) |
|
|
454 | #else |
204 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
455 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
456 | #endif |
205 | |
457 | |
206 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
458 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
207 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
459 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
208 | |
460 | |
209 | typedef struct ev_watcher *W; |
461 | typedef ev_watcher *W; |
210 | typedef struct ev_watcher_list *WL; |
462 | typedef ev_watcher_list *WL; |
211 | typedef struct ev_watcher_time *WT; |
463 | typedef ev_watcher_time *WT; |
212 | |
464 | |
|
|
465 | #define ev_active(w) ((W)(w))->active |
|
|
466 | #define ev_at(w) ((WT)(w))->at |
|
|
467 | |
|
|
468 | #if EV_USE_REALTIME |
|
|
469 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
470 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
471 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
472 | #endif |
|
|
473 | |
|
|
474 | #if EV_USE_MONOTONIC |
213 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
475 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
476 | #endif |
214 | |
477 | |
215 | #ifdef _WIN32 |
478 | #ifdef _WIN32 |
216 | # include "ev_win32.c" |
479 | # include "ev_win32.c" |
217 | #endif |
480 | #endif |
218 | |
481 | |
219 | /*****************************************************************************/ |
482 | /*****************************************************************************/ |
220 | |
483 | |
221 | static void (*syserr_cb)(const char *msg); |
484 | static void (*syserr_cb)(const char *msg); |
222 | |
485 | |
|
|
486 | void |
223 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
487 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
224 | { |
488 | { |
225 | syserr_cb = cb; |
489 | syserr_cb = cb; |
226 | } |
490 | } |
227 | |
491 | |
228 | static void |
492 | static void noinline |
229 | syserr (const char *msg) |
493 | ev_syserr (const char *msg) |
230 | { |
494 | { |
231 | if (!msg) |
495 | if (!msg) |
232 | msg = "(libev) system error"; |
496 | msg = "(libev) system error"; |
233 | |
497 | |
234 | if (syserr_cb) |
498 | if (syserr_cb) |
… | |
… | |
238 | perror (msg); |
502 | perror (msg); |
239 | abort (); |
503 | abort (); |
240 | } |
504 | } |
241 | } |
505 | } |
242 | |
506 | |
|
|
507 | static void * |
|
|
508 | ev_realloc_emul (void *ptr, long size) |
|
|
509 | { |
|
|
510 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
511 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
512 | * the single unix specification, so work around them here. |
|
|
513 | */ |
|
|
514 | |
|
|
515 | if (size) |
|
|
516 | return realloc (ptr, size); |
|
|
517 | |
|
|
518 | free (ptr); |
|
|
519 | return 0; |
|
|
520 | } |
|
|
521 | |
243 | static void *(*alloc)(void *ptr, long size); |
522 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
244 | |
523 | |
|
|
524 | void |
245 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
525 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
246 | { |
526 | { |
247 | alloc = cb; |
527 | alloc = cb; |
248 | } |
528 | } |
249 | |
529 | |
250 | static void * |
530 | inline_speed void * |
251 | ev_realloc (void *ptr, long size) |
531 | ev_realloc (void *ptr, long size) |
252 | { |
532 | { |
253 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
533 | ptr = alloc (ptr, size); |
254 | |
534 | |
255 | if (!ptr && size) |
535 | if (!ptr && size) |
256 | { |
536 | { |
257 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
537 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
258 | abort (); |
538 | abort (); |
… | |
… | |
264 | #define ev_malloc(size) ev_realloc (0, (size)) |
544 | #define ev_malloc(size) ev_realloc (0, (size)) |
265 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
545 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
266 | |
546 | |
267 | /*****************************************************************************/ |
547 | /*****************************************************************************/ |
268 | |
548 | |
|
|
549 | /* set in reify when reification needed */ |
|
|
550 | #define EV_ANFD_REIFY 1 |
|
|
551 | |
|
|
552 | /* file descriptor info structure */ |
269 | typedef struct |
553 | typedef struct |
270 | { |
554 | { |
271 | WL head; |
555 | WL head; |
272 | unsigned char events; |
556 | unsigned char events; /* the events watched for */ |
|
|
557 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
558 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
273 | unsigned char reify; |
559 | unsigned char unused; |
|
|
560 | #if EV_USE_EPOLL |
|
|
561 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
562 | #endif |
274 | #if EV_SELECT_IS_WINSOCKET |
563 | #if EV_SELECT_IS_WINSOCKET |
275 | SOCKET handle; |
564 | SOCKET handle; |
276 | #endif |
565 | #endif |
277 | } ANFD; |
566 | } ANFD; |
278 | |
567 | |
|
|
568 | /* stores the pending event set for a given watcher */ |
279 | typedef struct |
569 | typedef struct |
280 | { |
570 | { |
281 | W w; |
571 | W w; |
282 | int events; |
572 | int events; /* the pending event set for the given watcher */ |
283 | } ANPENDING; |
573 | } ANPENDING; |
|
|
574 | |
|
|
575 | #if EV_USE_INOTIFY |
|
|
576 | /* hash table entry per inotify-id */ |
|
|
577 | typedef struct |
|
|
578 | { |
|
|
579 | WL head; |
|
|
580 | } ANFS; |
|
|
581 | #endif |
|
|
582 | |
|
|
583 | /* Heap Entry */ |
|
|
584 | #if EV_HEAP_CACHE_AT |
|
|
585 | /* a heap element */ |
|
|
586 | typedef struct { |
|
|
587 | ev_tstamp at; |
|
|
588 | WT w; |
|
|
589 | } ANHE; |
|
|
590 | |
|
|
591 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
592 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
593 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
594 | #else |
|
|
595 | /* a heap element */ |
|
|
596 | typedef WT ANHE; |
|
|
597 | |
|
|
598 | #define ANHE_w(he) (he) |
|
|
599 | #define ANHE_at(he) (he)->at |
|
|
600 | #define ANHE_at_cache(he) |
|
|
601 | #endif |
284 | |
602 | |
285 | #if EV_MULTIPLICITY |
603 | #if EV_MULTIPLICITY |
286 | |
604 | |
287 | struct ev_loop |
605 | struct ev_loop |
288 | { |
606 | { |
… | |
… | |
306 | |
624 | |
307 | static int ev_default_loop_ptr; |
625 | static int ev_default_loop_ptr; |
308 | |
626 | |
309 | #endif |
627 | #endif |
310 | |
628 | |
|
|
629 | #if EV_MINIMAL < 2 |
|
|
630 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
631 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
632 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
633 | #else |
|
|
634 | # define EV_RELEASE_CB (void)0 |
|
|
635 | # define EV_ACQUIRE_CB (void)0 |
|
|
636 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
637 | #endif |
|
|
638 | |
|
|
639 | #define EVUNLOOP_RECURSE 0x80 |
|
|
640 | |
311 | /*****************************************************************************/ |
641 | /*****************************************************************************/ |
312 | |
642 | |
|
|
643 | #ifndef EV_HAVE_EV_TIME |
313 | ev_tstamp |
644 | ev_tstamp |
314 | ev_time (void) |
645 | ev_time (void) |
315 | { |
646 | { |
316 | #if EV_USE_REALTIME |
647 | #if EV_USE_REALTIME |
|
|
648 | if (expect_true (have_realtime)) |
|
|
649 | { |
317 | struct timespec ts; |
650 | struct timespec ts; |
318 | clock_gettime (CLOCK_REALTIME, &ts); |
651 | clock_gettime (CLOCK_REALTIME, &ts); |
319 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
652 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
320 | #else |
653 | } |
|
|
654 | #endif |
|
|
655 | |
321 | struct timeval tv; |
656 | struct timeval tv; |
322 | gettimeofday (&tv, 0); |
657 | gettimeofday (&tv, 0); |
323 | return tv.tv_sec + tv.tv_usec * 1e-6; |
658 | return tv.tv_sec + tv.tv_usec * 1e-6; |
324 | #endif |
|
|
325 | } |
659 | } |
|
|
660 | #endif |
326 | |
661 | |
327 | inline ev_tstamp |
662 | inline_size ev_tstamp |
328 | get_clock (void) |
663 | get_clock (void) |
329 | { |
664 | { |
330 | #if EV_USE_MONOTONIC |
665 | #if EV_USE_MONOTONIC |
331 | if (expect_true (have_monotonic)) |
666 | if (expect_true (have_monotonic)) |
332 | { |
667 | { |
… | |
… | |
345 | { |
680 | { |
346 | return ev_rt_now; |
681 | return ev_rt_now; |
347 | } |
682 | } |
348 | #endif |
683 | #endif |
349 | |
684 | |
350 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
685 | void |
|
|
686 | ev_sleep (ev_tstamp delay) |
|
|
687 | { |
|
|
688 | if (delay > 0.) |
|
|
689 | { |
|
|
690 | #if EV_USE_NANOSLEEP |
|
|
691 | struct timespec ts; |
|
|
692 | |
|
|
693 | ts.tv_sec = (time_t)delay; |
|
|
694 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
695 | |
|
|
696 | nanosleep (&ts, 0); |
|
|
697 | #elif defined(_WIN32) |
|
|
698 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
699 | #else |
|
|
700 | struct timeval tv; |
|
|
701 | |
|
|
702 | tv.tv_sec = (time_t)delay; |
|
|
703 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
704 | |
|
|
705 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
706 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
707 | /* by older ones */ |
|
|
708 | select (0, 0, 0, 0, &tv); |
|
|
709 | #endif |
|
|
710 | } |
|
|
711 | } |
|
|
712 | |
|
|
713 | /*****************************************************************************/ |
|
|
714 | |
|
|
715 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
716 | |
|
|
717 | /* find a suitable new size for the given array, */ |
|
|
718 | /* hopefully by rounding to a ncie-to-malloc size */ |
|
|
719 | inline_size int |
|
|
720 | array_nextsize (int elem, int cur, int cnt) |
|
|
721 | { |
|
|
722 | int ncur = cur + 1; |
|
|
723 | |
|
|
724 | do |
|
|
725 | ncur <<= 1; |
|
|
726 | while (cnt > ncur); |
|
|
727 | |
|
|
728 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
729 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
730 | { |
|
|
731 | ncur *= elem; |
|
|
732 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
733 | ncur = ncur - sizeof (void *) * 4; |
|
|
734 | ncur /= elem; |
|
|
735 | } |
|
|
736 | |
|
|
737 | return ncur; |
|
|
738 | } |
|
|
739 | |
|
|
740 | static noinline void * |
|
|
741 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
742 | { |
|
|
743 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
744 | return ev_realloc (base, elem * *cur); |
|
|
745 | } |
|
|
746 | |
|
|
747 | #define array_init_zero(base,count) \ |
|
|
748 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
351 | |
749 | |
352 | #define array_needsize(type,base,cur,cnt,init) \ |
750 | #define array_needsize(type,base,cur,cnt,init) \ |
353 | if (expect_false ((cnt) > cur)) \ |
751 | if (expect_false ((cnt) > (cur))) \ |
354 | { \ |
752 | { \ |
355 | int newcnt = cur; \ |
753 | int ocur_ = (cur); \ |
356 | do \ |
754 | (base) = (type *)array_realloc \ |
357 | { \ |
755 | (sizeof (type), (base), &(cur), (cnt)); \ |
358 | newcnt = array_roundsize (type, newcnt << 1); \ |
756 | init ((base) + (ocur_), (cur) - ocur_); \ |
359 | } \ |
|
|
360 | while ((cnt) > newcnt); \ |
|
|
361 | \ |
|
|
362 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
363 | init (base + cur, newcnt - cur); \ |
|
|
364 | cur = newcnt; \ |
|
|
365 | } |
757 | } |
366 | |
758 | |
|
|
759 | #if 0 |
367 | #define array_slim(type,stem) \ |
760 | #define array_slim(type,stem) \ |
368 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
761 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
369 | { \ |
762 | { \ |
370 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
763 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
371 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
764 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
372 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
765 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
373 | } |
766 | } |
|
|
767 | #endif |
374 | |
768 | |
375 | #define array_free(stem, idx) \ |
769 | #define array_free(stem, idx) \ |
376 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
770 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
377 | |
771 | |
378 | /*****************************************************************************/ |
772 | /*****************************************************************************/ |
379 | |
773 | |
380 | static void |
774 | /* dummy callback for pending events */ |
381 | anfds_init (ANFD *base, int count) |
775 | static void noinline |
|
|
776 | pendingcb (EV_P_ ev_prepare *w, int revents) |
382 | { |
777 | { |
383 | while (count--) |
|
|
384 | { |
|
|
385 | base->head = 0; |
|
|
386 | base->events = EV_NONE; |
|
|
387 | base->reify = 0; |
|
|
388 | |
|
|
389 | ++base; |
|
|
390 | } |
|
|
391 | } |
778 | } |
392 | |
779 | |
393 | void |
780 | void noinline |
394 | ev_feed_event (EV_P_ void *w, int revents) |
781 | ev_feed_event (EV_P_ void *w, int revents) |
395 | { |
782 | { |
396 | W w_ = (W)w; |
783 | W w_ = (W)w; |
|
|
784 | int pri = ABSPRI (w_); |
397 | |
785 | |
398 | if (expect_false (w_->pending)) |
786 | if (expect_false (w_->pending)) |
|
|
787 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
788 | else |
399 | { |
789 | { |
|
|
790 | w_->pending = ++pendingcnt [pri]; |
|
|
791 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
792 | pendings [pri][w_->pending - 1].w = w_; |
400 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
793 | pendings [pri][w_->pending - 1].events = revents; |
401 | return; |
|
|
402 | } |
794 | } |
403 | |
|
|
404 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
405 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
|
|
406 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
407 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
408 | } |
795 | } |
409 | |
796 | |
410 | static void |
797 | inline_speed void |
|
|
798 | feed_reverse (EV_P_ W w) |
|
|
799 | { |
|
|
800 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
801 | rfeeds [rfeedcnt++] = w; |
|
|
802 | } |
|
|
803 | |
|
|
804 | inline_size void |
|
|
805 | feed_reverse_done (EV_P_ int revents) |
|
|
806 | { |
|
|
807 | do |
|
|
808 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
809 | while (rfeedcnt); |
|
|
810 | } |
|
|
811 | |
|
|
812 | inline_speed void |
411 | queue_events (EV_P_ W *events, int eventcnt, int type) |
813 | queue_events (EV_P_ W *events, int eventcnt, int type) |
412 | { |
814 | { |
413 | int i; |
815 | int i; |
414 | |
816 | |
415 | for (i = 0; i < eventcnt; ++i) |
817 | for (i = 0; i < eventcnt; ++i) |
416 | ev_feed_event (EV_A_ events [i], type); |
818 | ev_feed_event (EV_A_ events [i], type); |
417 | } |
819 | } |
418 | |
820 | |
|
|
821 | /*****************************************************************************/ |
|
|
822 | |
419 | inline void |
823 | inline_speed void |
420 | fd_event (EV_P_ int fd, int revents) |
824 | fd_event_nc (EV_P_ int fd, int revents) |
421 | { |
825 | { |
422 | ANFD *anfd = anfds + fd; |
826 | ANFD *anfd = anfds + fd; |
423 | struct ev_io *w; |
827 | ev_io *w; |
424 | |
828 | |
425 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
829 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
426 | { |
830 | { |
427 | int ev = w->events & revents; |
831 | int ev = w->events & revents; |
428 | |
832 | |
429 | if (ev) |
833 | if (ev) |
430 | ev_feed_event (EV_A_ (W)w, ev); |
834 | ev_feed_event (EV_A_ (W)w, ev); |
431 | } |
835 | } |
432 | } |
836 | } |
433 | |
837 | |
|
|
838 | /* do not submit kernel events for fds that have reify set */ |
|
|
839 | /* because that means they changed while we were polling for new events */ |
|
|
840 | inline_speed void |
|
|
841 | fd_event (EV_P_ int fd, int revents) |
|
|
842 | { |
|
|
843 | ANFD *anfd = anfds + fd; |
|
|
844 | |
|
|
845 | if (expect_true (!anfd->reify)) |
|
|
846 | fd_event_nc (EV_A_ fd, revents); |
|
|
847 | } |
|
|
848 | |
434 | void |
849 | void |
435 | ev_feed_fd_event (EV_P_ int fd, int revents) |
850 | ev_feed_fd_event (EV_P_ int fd, int revents) |
436 | { |
851 | { |
|
|
852 | if (fd >= 0 && fd < anfdmax) |
437 | fd_event (EV_A_ fd, revents); |
853 | fd_event_nc (EV_A_ fd, revents); |
438 | } |
854 | } |
439 | |
855 | |
440 | /*****************************************************************************/ |
856 | /* make sure the external fd watch events are in-sync */ |
441 | |
857 | /* with the kernel/libev internal state */ |
442 | inline void |
858 | inline_size void |
443 | fd_reify (EV_P) |
859 | fd_reify (EV_P) |
444 | { |
860 | { |
445 | int i; |
861 | int i; |
446 | |
862 | |
447 | for (i = 0; i < fdchangecnt; ++i) |
863 | for (i = 0; i < fdchangecnt; ++i) |
448 | { |
864 | { |
449 | int fd = fdchanges [i]; |
865 | int fd = fdchanges [i]; |
450 | ANFD *anfd = anfds + fd; |
866 | ANFD *anfd = anfds + fd; |
451 | struct ev_io *w; |
867 | ev_io *w; |
452 | |
868 | |
453 | int events = 0; |
869 | unsigned char events = 0; |
454 | |
870 | |
455 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
871 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
456 | events |= w->events; |
872 | events |= (unsigned char)w->events; |
457 | |
873 | |
458 | #if EV_SELECT_IS_WINSOCKET |
874 | #if EV_SELECT_IS_WINSOCKET |
459 | if (events) |
875 | if (events) |
460 | { |
876 | { |
461 | unsigned long argp; |
877 | unsigned long arg; |
|
|
878 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
879 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
880 | #else |
462 | anfd->handle = _get_osfhandle (fd); |
881 | anfd->handle = _get_osfhandle (fd); |
|
|
882 | #endif |
463 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
883 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
464 | } |
884 | } |
465 | #endif |
885 | #endif |
466 | |
886 | |
|
|
887 | { |
|
|
888 | unsigned char o_events = anfd->events; |
|
|
889 | unsigned char o_reify = anfd->reify; |
|
|
890 | |
467 | anfd->reify = 0; |
891 | anfd->reify = 0; |
468 | |
|
|
469 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
470 | anfd->events = events; |
892 | anfd->events = events; |
|
|
893 | |
|
|
894 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
895 | backend_modify (EV_A_ fd, o_events, events); |
|
|
896 | } |
471 | } |
897 | } |
472 | |
898 | |
473 | fdchangecnt = 0; |
899 | fdchangecnt = 0; |
474 | } |
900 | } |
475 | |
901 | |
476 | static void |
902 | /* something about the given fd changed */ |
|
|
903 | inline_size void |
477 | fd_change (EV_P_ int fd) |
904 | fd_change (EV_P_ int fd, int flags) |
478 | { |
905 | { |
479 | if (expect_false (anfds [fd].reify)) |
906 | unsigned char reify = anfds [fd].reify; |
480 | return; |
|
|
481 | |
|
|
482 | anfds [fd].reify = 1; |
907 | anfds [fd].reify |= flags; |
483 | |
908 | |
|
|
909 | if (expect_true (!reify)) |
|
|
910 | { |
484 | ++fdchangecnt; |
911 | ++fdchangecnt; |
485 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
912 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
486 | fdchanges [fdchangecnt - 1] = fd; |
913 | fdchanges [fdchangecnt - 1] = fd; |
|
|
914 | } |
487 | } |
915 | } |
488 | |
916 | |
489 | static void |
917 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
918 | inline_speed void |
490 | fd_kill (EV_P_ int fd) |
919 | fd_kill (EV_P_ int fd) |
491 | { |
920 | { |
492 | struct ev_io *w; |
921 | ev_io *w; |
493 | |
922 | |
494 | while ((w = (struct ev_io *)anfds [fd].head)) |
923 | while ((w = (ev_io *)anfds [fd].head)) |
495 | { |
924 | { |
496 | ev_io_stop (EV_A_ w); |
925 | ev_io_stop (EV_A_ w); |
497 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
926 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
498 | } |
927 | } |
499 | } |
928 | } |
500 | |
929 | |
|
|
930 | /* check whether the given fd is atcually valid, for error recovery */ |
501 | inline int |
931 | inline_size int |
502 | fd_valid (int fd) |
932 | fd_valid (int fd) |
503 | { |
933 | { |
504 | #ifdef _WIN32 |
934 | #ifdef _WIN32 |
505 | return _get_osfhandle (fd) != -1; |
935 | return _get_osfhandle (fd) != -1; |
506 | #else |
936 | #else |
507 | return fcntl (fd, F_GETFD) != -1; |
937 | return fcntl (fd, F_GETFD) != -1; |
508 | #endif |
938 | #endif |
509 | } |
939 | } |
510 | |
940 | |
511 | /* called on EBADF to verify fds */ |
941 | /* called on EBADF to verify fds */ |
512 | static void |
942 | static void noinline |
513 | fd_ebadf (EV_P) |
943 | fd_ebadf (EV_P) |
514 | { |
944 | { |
515 | int fd; |
945 | int fd; |
516 | |
946 | |
517 | for (fd = 0; fd < anfdmax; ++fd) |
947 | for (fd = 0; fd < anfdmax; ++fd) |
518 | if (anfds [fd].events) |
948 | if (anfds [fd].events) |
519 | if (!fd_valid (fd) == -1 && errno == EBADF) |
949 | if (!fd_valid (fd) && errno == EBADF) |
520 | fd_kill (EV_A_ fd); |
950 | fd_kill (EV_A_ fd); |
521 | } |
951 | } |
522 | |
952 | |
523 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
953 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
524 | static void |
954 | static void noinline |
525 | fd_enomem (EV_P) |
955 | fd_enomem (EV_P) |
526 | { |
956 | { |
527 | int fd; |
957 | int fd; |
528 | |
958 | |
529 | for (fd = anfdmax; fd--; ) |
959 | for (fd = anfdmax; fd--; ) |
… | |
… | |
532 | fd_kill (EV_A_ fd); |
962 | fd_kill (EV_A_ fd); |
533 | return; |
963 | return; |
534 | } |
964 | } |
535 | } |
965 | } |
536 | |
966 | |
537 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
967 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
538 | static void |
968 | static void noinline |
539 | fd_rearm_all (EV_P) |
969 | fd_rearm_all (EV_P) |
540 | { |
970 | { |
541 | int fd; |
971 | int fd; |
542 | |
972 | |
543 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
544 | for (fd = 0; fd < anfdmax; ++fd) |
973 | for (fd = 0; fd < anfdmax; ++fd) |
545 | if (anfds [fd].events) |
974 | if (anfds [fd].events) |
546 | { |
975 | { |
547 | anfds [fd].events = 0; |
976 | anfds [fd].events = 0; |
548 | fd_change (EV_A_ fd); |
977 | anfds [fd].emask = 0; |
|
|
978 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
549 | } |
979 | } |
550 | } |
980 | } |
551 | |
981 | |
552 | /*****************************************************************************/ |
982 | /*****************************************************************************/ |
553 | |
983 | |
554 | static void |
984 | /* |
555 | upheap (WT *heap, int k) |
985 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
556 | { |
986 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
557 | WT w = heap [k]; |
987 | * the branching factor of the d-tree. |
|
|
988 | */ |
558 | |
989 | |
559 | while (k && heap [k >> 1]->at > w->at) |
990 | /* |
560 | { |
991 | * at the moment we allow libev the luxury of two heaps, |
561 | heap [k] = heap [k >> 1]; |
992 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
562 | ((W)heap [k])->active = k + 1; |
993 | * which is more cache-efficient. |
563 | k >>= 1; |
994 | * the difference is about 5% with 50000+ watchers. |
564 | } |
995 | */ |
|
|
996 | #if EV_USE_4HEAP |
565 | |
997 | |
566 | heap [k] = w; |
998 | #define DHEAP 4 |
567 | ((W)heap [k])->active = k + 1; |
999 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1000 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1001 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
568 | |
1002 | |
569 | } |
1003 | /* away from the root */ |
570 | |
1004 | inline_speed void |
571 | static void |
|
|
572 | downheap (WT *heap, int N, int k) |
1005 | downheap (ANHE *heap, int N, int k) |
573 | { |
1006 | { |
574 | WT w = heap [k]; |
1007 | ANHE he = heap [k]; |
|
|
1008 | ANHE *E = heap + N + HEAP0; |
575 | |
1009 | |
576 | while (k < (N >> 1)) |
1010 | for (;;) |
577 | { |
1011 | { |
578 | int j = k << 1; |
1012 | ev_tstamp minat; |
|
|
1013 | ANHE *minpos; |
|
|
1014 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
579 | |
1015 | |
580 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
1016 | /* find minimum child */ |
|
|
1017 | if (expect_true (pos + DHEAP - 1 < E)) |
581 | ++j; |
1018 | { |
582 | |
1019 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
583 | if (w->at <= heap [j]->at) |
1020 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1021 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1022 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1023 | } |
|
|
1024 | else if (pos < E) |
|
|
1025 | { |
|
|
1026 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1027 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1028 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1029 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1030 | } |
|
|
1031 | else |
584 | break; |
1032 | break; |
585 | |
1033 | |
|
|
1034 | if (ANHE_at (he) <= minat) |
|
|
1035 | break; |
|
|
1036 | |
|
|
1037 | heap [k] = *minpos; |
|
|
1038 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1039 | |
|
|
1040 | k = minpos - heap; |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | heap [k] = he; |
|
|
1044 | ev_active (ANHE_w (he)) = k; |
|
|
1045 | } |
|
|
1046 | |
|
|
1047 | #else /* 4HEAP */ |
|
|
1048 | |
|
|
1049 | #define HEAP0 1 |
|
|
1050 | #define HPARENT(k) ((k) >> 1) |
|
|
1051 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1052 | |
|
|
1053 | /* away from the root */ |
|
|
1054 | inline_speed void |
|
|
1055 | downheap (ANHE *heap, int N, int k) |
|
|
1056 | { |
|
|
1057 | ANHE he = heap [k]; |
|
|
1058 | |
|
|
1059 | for (;;) |
|
|
1060 | { |
|
|
1061 | int c = k << 1; |
|
|
1062 | |
|
|
1063 | if (c > N + HEAP0 - 1) |
|
|
1064 | break; |
|
|
1065 | |
|
|
1066 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1067 | ? 1 : 0; |
|
|
1068 | |
|
|
1069 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1070 | break; |
|
|
1071 | |
586 | heap [k] = heap [j]; |
1072 | heap [k] = heap [c]; |
587 | ((W)heap [k])->active = k + 1; |
1073 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1074 | |
588 | k = j; |
1075 | k = c; |
589 | } |
1076 | } |
590 | |
1077 | |
591 | heap [k] = w; |
1078 | heap [k] = he; |
592 | ((W)heap [k])->active = k + 1; |
1079 | ev_active (ANHE_w (he)) = k; |
593 | } |
1080 | } |
|
|
1081 | #endif |
594 | |
1082 | |
|
|
1083 | /* towards the root */ |
|
|
1084 | inline_speed void |
|
|
1085 | upheap (ANHE *heap, int k) |
|
|
1086 | { |
|
|
1087 | ANHE he = heap [k]; |
|
|
1088 | |
|
|
1089 | for (;;) |
|
|
1090 | { |
|
|
1091 | int p = HPARENT (k); |
|
|
1092 | |
|
|
1093 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1094 | break; |
|
|
1095 | |
|
|
1096 | heap [k] = heap [p]; |
|
|
1097 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1098 | k = p; |
|
|
1099 | } |
|
|
1100 | |
|
|
1101 | heap [k] = he; |
|
|
1102 | ev_active (ANHE_w (he)) = k; |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | /* move an element suitably so it is in a correct place */ |
595 | inline void |
1106 | inline_size void |
596 | adjustheap (WT *heap, int N, int k) |
1107 | adjustheap (ANHE *heap, int N, int k) |
597 | { |
1108 | { |
|
|
1109 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
598 | upheap (heap, k); |
1110 | upheap (heap, k); |
|
|
1111 | else |
599 | downheap (heap, N, k); |
1112 | downheap (heap, N, k); |
|
|
1113 | } |
|
|
1114 | |
|
|
1115 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1116 | inline_size void |
|
|
1117 | reheap (ANHE *heap, int N) |
|
|
1118 | { |
|
|
1119 | int i; |
|
|
1120 | |
|
|
1121 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1122 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1123 | for (i = 0; i < N; ++i) |
|
|
1124 | upheap (heap, i + HEAP0); |
600 | } |
1125 | } |
601 | |
1126 | |
602 | /*****************************************************************************/ |
1127 | /*****************************************************************************/ |
603 | |
1128 | |
|
|
1129 | /* associate signal watchers to a signal signal */ |
604 | typedef struct |
1130 | typedef struct |
605 | { |
1131 | { |
|
|
1132 | #if EV_MULTIPLICITY |
|
|
1133 | EV_P; |
|
|
1134 | #endif |
606 | WL head; |
1135 | WL head; |
607 | sig_atomic_t volatile gotsig; |
1136 | EV_ATOMIC_T gotsig; |
608 | } ANSIG; |
1137 | } ANSIG; |
609 | |
1138 | |
610 | static ANSIG *signals; |
1139 | static ANSIG signals [EV_NSIG - 1]; |
611 | static int signalmax; |
1140 | static EV_ATOMIC_T gotsig; |
612 | |
1141 | |
613 | static int sigpipe [2]; |
1142 | /*****************************************************************************/ |
614 | static sig_atomic_t volatile gotsig; |
|
|
615 | static struct ev_io sigev; |
|
|
616 | |
1143 | |
617 | static void |
1144 | /* used to prepare libev internal fd's */ |
618 | signals_init (ANSIG *base, int count) |
1145 | /* this is not fork-safe */ |
619 | { |
1146 | inline_speed void |
620 | while (count--) |
|
|
621 | { |
|
|
622 | base->head = 0; |
|
|
623 | base->gotsig = 0; |
|
|
624 | |
|
|
625 | ++base; |
|
|
626 | } |
|
|
627 | } |
|
|
628 | |
|
|
629 | static void |
|
|
630 | sighandler (int signum) |
|
|
631 | { |
|
|
632 | #if _WIN32 |
|
|
633 | signal (signum, sighandler); |
|
|
634 | #endif |
|
|
635 | |
|
|
636 | signals [signum - 1].gotsig = 1; |
|
|
637 | |
|
|
638 | if (!gotsig) |
|
|
639 | { |
|
|
640 | int old_errno = errno; |
|
|
641 | gotsig = 1; |
|
|
642 | write (sigpipe [1], &signum, 1); |
|
|
643 | errno = old_errno; |
|
|
644 | } |
|
|
645 | } |
|
|
646 | |
|
|
647 | void |
|
|
648 | ev_feed_signal_event (EV_P_ int signum) |
|
|
649 | { |
|
|
650 | WL w; |
|
|
651 | |
|
|
652 | #if EV_MULTIPLICITY |
|
|
653 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
654 | #endif |
|
|
655 | |
|
|
656 | --signum; |
|
|
657 | |
|
|
658 | if (signum < 0 || signum >= signalmax) |
|
|
659 | return; |
|
|
660 | |
|
|
661 | signals [signum].gotsig = 0; |
|
|
662 | |
|
|
663 | for (w = signals [signum].head; w; w = w->next) |
|
|
664 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
665 | } |
|
|
666 | |
|
|
667 | static void |
|
|
668 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
669 | { |
|
|
670 | int signum; |
|
|
671 | |
|
|
672 | read (sigpipe [0], &revents, 1); |
|
|
673 | gotsig = 0; |
|
|
674 | |
|
|
675 | for (signum = signalmax; signum--; ) |
|
|
676 | if (signals [signum].gotsig) |
|
|
677 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
678 | } |
|
|
679 | |
|
|
680 | static void |
|
|
681 | fd_intern (int fd) |
1147 | fd_intern (int fd) |
682 | { |
1148 | { |
683 | #ifdef _WIN32 |
1149 | #ifdef _WIN32 |
684 | int arg = 1; |
1150 | unsigned long arg = 1; |
685 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1151 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
686 | #else |
1152 | #else |
687 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1153 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
688 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1154 | fcntl (fd, F_SETFL, O_NONBLOCK); |
689 | #endif |
1155 | #endif |
690 | } |
1156 | } |
691 | |
1157 | |
|
|
1158 | static void noinline |
|
|
1159 | evpipe_init (EV_P) |
|
|
1160 | { |
|
|
1161 | if (!ev_is_active (&pipe_w)) |
|
|
1162 | { |
|
|
1163 | #if EV_USE_EVENTFD |
|
|
1164 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1165 | if (evfd < 0 && errno == EINVAL) |
|
|
1166 | evfd = eventfd (0, 0); |
|
|
1167 | |
|
|
1168 | if (evfd >= 0) |
|
|
1169 | { |
|
|
1170 | evpipe [0] = -1; |
|
|
1171 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1172 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1173 | } |
|
|
1174 | else |
|
|
1175 | #endif |
|
|
1176 | { |
|
|
1177 | while (pipe (evpipe)) |
|
|
1178 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1179 | |
|
|
1180 | fd_intern (evpipe [0]); |
|
|
1181 | fd_intern (evpipe [1]); |
|
|
1182 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1183 | } |
|
|
1184 | |
|
|
1185 | ev_io_start (EV_A_ &pipe_w); |
|
|
1186 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1187 | } |
|
|
1188 | } |
|
|
1189 | |
|
|
1190 | inline_size void |
|
|
1191 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1192 | { |
|
|
1193 | if (!*flag) |
|
|
1194 | { |
|
|
1195 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1196 | |
|
|
1197 | *flag = 1; |
|
|
1198 | |
|
|
1199 | #if EV_USE_EVENTFD |
|
|
1200 | if (evfd >= 0) |
|
|
1201 | { |
|
|
1202 | uint64_t counter = 1; |
|
|
1203 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1204 | } |
|
|
1205 | else |
|
|
1206 | #endif |
|
|
1207 | write (evpipe [1], &old_errno, 1); |
|
|
1208 | |
|
|
1209 | errno = old_errno; |
|
|
1210 | } |
|
|
1211 | } |
|
|
1212 | |
|
|
1213 | /* called whenever the libev signal pipe */ |
|
|
1214 | /* got some events (signal, async) */ |
692 | static void |
1215 | static void |
693 | siginit (EV_P) |
1216 | pipecb (EV_P_ ev_io *iow, int revents) |
694 | { |
1217 | { |
695 | fd_intern (sigpipe [0]); |
1218 | #if EV_USE_EVENTFD |
696 | fd_intern (sigpipe [1]); |
1219 | if (evfd >= 0) |
|
|
1220 | { |
|
|
1221 | uint64_t counter; |
|
|
1222 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1223 | } |
|
|
1224 | else |
|
|
1225 | #endif |
|
|
1226 | { |
|
|
1227 | char dummy; |
|
|
1228 | read (evpipe [0], &dummy, 1); |
|
|
1229 | } |
697 | |
1230 | |
698 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
1231 | if (gotsig && ev_is_default_loop (EV_A)) |
699 | ev_io_start (EV_A_ &sigev); |
1232 | { |
700 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1233 | int signum; |
|
|
1234 | gotsig = 0; |
|
|
1235 | |
|
|
1236 | for (signum = EV_NSIG - 1; signum--; ) |
|
|
1237 | if (signals [signum].gotsig) |
|
|
1238 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1239 | } |
|
|
1240 | |
|
|
1241 | #if EV_ASYNC_ENABLE |
|
|
1242 | if (gotasync) |
|
|
1243 | { |
|
|
1244 | int i; |
|
|
1245 | gotasync = 0; |
|
|
1246 | |
|
|
1247 | for (i = asynccnt; i--; ) |
|
|
1248 | if (asyncs [i]->sent) |
|
|
1249 | { |
|
|
1250 | asyncs [i]->sent = 0; |
|
|
1251 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1252 | } |
|
|
1253 | } |
|
|
1254 | #endif |
701 | } |
1255 | } |
702 | |
1256 | |
703 | /*****************************************************************************/ |
1257 | /*****************************************************************************/ |
704 | |
1258 | |
705 | static struct ev_child *childs [PID_HASHSIZE]; |
1259 | static void |
|
|
1260 | ev_sighandler (int signum) |
|
|
1261 | { |
|
|
1262 | #if EV_MULTIPLICITY |
|
|
1263 | EV_P = signals [signum - 1].loop; |
|
|
1264 | #endif |
|
|
1265 | |
|
|
1266 | #if _WIN32 |
|
|
1267 | signal (signum, ev_sighandler); |
|
|
1268 | #endif |
|
|
1269 | |
|
|
1270 | signals [signum - 1].gotsig = 1; |
|
|
1271 | evpipe_write (EV_A_ &gotsig); |
|
|
1272 | } |
|
|
1273 | |
|
|
1274 | void noinline |
|
|
1275 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1276 | { |
|
|
1277 | WL w; |
|
|
1278 | |
|
|
1279 | #if EV_MULTIPLICITY |
|
|
1280 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1281 | #endif |
|
|
1282 | |
|
|
1283 | if (signum <= 0 || signum > EV_NSIG) |
|
|
1284 | return; |
|
|
1285 | |
|
|
1286 | --signum; |
|
|
1287 | |
|
|
1288 | signals [signum].gotsig = 0; |
|
|
1289 | |
|
|
1290 | for (w = signals [signum].head; w; w = w->next) |
|
|
1291 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1292 | } |
|
|
1293 | |
|
|
1294 | #if EV_USE_SIGNALFD |
|
|
1295 | static void |
|
|
1296 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
1297 | { |
|
|
1298 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
1299 | |
|
|
1300 | for (;;) |
|
|
1301 | { |
|
|
1302 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
1303 | |
|
|
1304 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
1305 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1306 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
1307 | |
|
|
1308 | if (res < (ssize_t)sizeof (si)) |
|
|
1309 | break; |
|
|
1310 | } |
|
|
1311 | } |
|
|
1312 | #endif |
|
|
1313 | |
|
|
1314 | /*****************************************************************************/ |
|
|
1315 | |
|
|
1316 | static WL childs [EV_PID_HASHSIZE]; |
706 | |
1317 | |
707 | #ifndef _WIN32 |
1318 | #ifndef _WIN32 |
708 | |
1319 | |
709 | static struct ev_signal childev; |
1320 | static ev_signal childev; |
|
|
1321 | |
|
|
1322 | #ifndef WIFCONTINUED |
|
|
1323 | # define WIFCONTINUED(status) 0 |
|
|
1324 | #endif |
|
|
1325 | |
|
|
1326 | /* handle a single child status event */ |
|
|
1327 | inline_speed void |
|
|
1328 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1329 | { |
|
|
1330 | ev_child *w; |
|
|
1331 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1332 | |
|
|
1333 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1334 | { |
|
|
1335 | if ((w->pid == pid || !w->pid) |
|
|
1336 | && (!traced || (w->flags & 1))) |
|
|
1337 | { |
|
|
1338 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1339 | w->rpid = pid; |
|
|
1340 | w->rstatus = status; |
|
|
1341 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1342 | } |
|
|
1343 | } |
|
|
1344 | } |
710 | |
1345 | |
711 | #ifndef WCONTINUED |
1346 | #ifndef WCONTINUED |
712 | # define WCONTINUED 0 |
1347 | # define WCONTINUED 0 |
713 | #endif |
1348 | #endif |
714 | |
1349 | |
|
|
1350 | /* called on sigchld etc., calls waitpid */ |
715 | static void |
1351 | static void |
716 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
717 | { |
|
|
718 | struct ev_child *w; |
|
|
719 | |
|
|
720 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
721 | if (w->pid == pid || !w->pid) |
|
|
722 | { |
|
|
723 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
724 | w->rpid = pid; |
|
|
725 | w->rstatus = status; |
|
|
726 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
727 | } |
|
|
728 | } |
|
|
729 | |
|
|
730 | static void |
|
|
731 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1352 | childcb (EV_P_ ev_signal *sw, int revents) |
732 | { |
1353 | { |
733 | int pid, status; |
1354 | int pid, status; |
734 | |
1355 | |
|
|
1356 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
735 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1357 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
736 | { |
1358 | if (!WCONTINUED |
|
|
1359 | || errno != EINVAL |
|
|
1360 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1361 | return; |
|
|
1362 | |
737 | /* make sure we are called again until all childs have been reaped */ |
1363 | /* make sure we are called again until all children have been reaped */ |
|
|
1364 | /* we need to do it this way so that the callback gets called before we continue */ |
738 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1365 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
739 | |
1366 | |
740 | child_reap (EV_A_ sw, pid, pid, status); |
1367 | child_reap (EV_A_ pid, pid, status); |
|
|
1368 | if (EV_PID_HASHSIZE > 1) |
741 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1369 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
742 | } |
|
|
743 | } |
1370 | } |
744 | |
1371 | |
745 | #endif |
1372 | #endif |
746 | |
1373 | |
747 | /*****************************************************************************/ |
1374 | /*****************************************************************************/ |
… | |
… | |
773 | { |
1400 | { |
774 | return EV_VERSION_MINOR; |
1401 | return EV_VERSION_MINOR; |
775 | } |
1402 | } |
776 | |
1403 | |
777 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1404 | /* return true if we are running with elevated privileges and should ignore env variables */ |
778 | static int |
1405 | int inline_size |
779 | enable_secure (void) |
1406 | enable_secure (void) |
780 | { |
1407 | { |
781 | #ifdef _WIN32 |
1408 | #ifdef _WIN32 |
782 | return 0; |
1409 | return 0; |
783 | #else |
1410 | #else |
… | |
… | |
785 | || getgid () != getegid (); |
1412 | || getgid () != getegid (); |
786 | #endif |
1413 | #endif |
787 | } |
1414 | } |
788 | |
1415 | |
789 | unsigned int |
1416 | unsigned int |
790 | ev_method (EV_P) |
1417 | ev_supported_backends (void) |
791 | { |
1418 | { |
792 | return method; |
1419 | unsigned int flags = 0; |
793 | } |
|
|
794 | |
1420 | |
795 | static void |
1421 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1422 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1423 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1424 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1425 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1426 | |
|
|
1427 | return flags; |
|
|
1428 | } |
|
|
1429 | |
|
|
1430 | unsigned int |
|
|
1431 | ev_recommended_backends (void) |
|
|
1432 | { |
|
|
1433 | unsigned int flags = ev_supported_backends (); |
|
|
1434 | |
|
|
1435 | #ifndef __NetBSD__ |
|
|
1436 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1437 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1438 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1439 | #endif |
|
|
1440 | #ifdef __APPLE__ |
|
|
1441 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1442 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1443 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1444 | #endif |
|
|
1445 | |
|
|
1446 | return flags; |
|
|
1447 | } |
|
|
1448 | |
|
|
1449 | unsigned int |
|
|
1450 | ev_embeddable_backends (void) |
|
|
1451 | { |
|
|
1452 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1453 | |
|
|
1454 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1455 | /* please fix it and tell me how to detect the fix */ |
|
|
1456 | flags &= ~EVBACKEND_EPOLL; |
|
|
1457 | |
|
|
1458 | return flags; |
|
|
1459 | } |
|
|
1460 | |
|
|
1461 | unsigned int |
|
|
1462 | ev_backend (EV_P) |
|
|
1463 | { |
|
|
1464 | return backend; |
|
|
1465 | } |
|
|
1466 | |
|
|
1467 | #if EV_MINIMAL < 2 |
|
|
1468 | unsigned int |
|
|
1469 | ev_loop_count (EV_P) |
|
|
1470 | { |
|
|
1471 | return loop_count; |
|
|
1472 | } |
|
|
1473 | |
|
|
1474 | unsigned int |
|
|
1475 | ev_loop_depth (EV_P) |
|
|
1476 | { |
|
|
1477 | return loop_depth; |
|
|
1478 | } |
|
|
1479 | |
|
|
1480 | void |
|
|
1481 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1482 | { |
|
|
1483 | io_blocktime = interval; |
|
|
1484 | } |
|
|
1485 | |
|
|
1486 | void |
|
|
1487 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1488 | { |
|
|
1489 | timeout_blocktime = interval; |
|
|
1490 | } |
|
|
1491 | |
|
|
1492 | void |
|
|
1493 | ev_set_userdata (EV_P_ void *data) |
|
|
1494 | { |
|
|
1495 | userdata = data; |
|
|
1496 | } |
|
|
1497 | |
|
|
1498 | void * |
|
|
1499 | ev_userdata (EV_P) |
|
|
1500 | { |
|
|
1501 | return userdata; |
|
|
1502 | } |
|
|
1503 | |
|
|
1504 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1505 | { |
|
|
1506 | invoke_cb = invoke_pending_cb; |
|
|
1507 | } |
|
|
1508 | |
|
|
1509 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1510 | { |
|
|
1511 | release_cb = release; |
|
|
1512 | acquire_cb = acquire; |
|
|
1513 | } |
|
|
1514 | #endif |
|
|
1515 | |
|
|
1516 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1517 | static void noinline |
796 | loop_init (EV_P_ unsigned int flags) |
1518 | loop_init (EV_P_ unsigned int flags) |
797 | { |
1519 | { |
798 | if (!method) |
1520 | if (!backend) |
799 | { |
1521 | { |
|
|
1522 | #if EV_USE_REALTIME |
|
|
1523 | if (!have_realtime) |
|
|
1524 | { |
|
|
1525 | struct timespec ts; |
|
|
1526 | |
|
|
1527 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1528 | have_realtime = 1; |
|
|
1529 | } |
|
|
1530 | #endif |
|
|
1531 | |
800 | #if EV_USE_MONOTONIC |
1532 | #if EV_USE_MONOTONIC |
|
|
1533 | if (!have_monotonic) |
801 | { |
1534 | { |
802 | struct timespec ts; |
1535 | struct timespec ts; |
|
|
1536 | |
803 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1537 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
804 | have_monotonic = 1; |
1538 | have_monotonic = 1; |
805 | } |
1539 | } |
806 | #endif |
1540 | #endif |
807 | |
1541 | |
808 | ev_rt_now = ev_time (); |
1542 | /* pid check not overridable via env */ |
809 | mn_now = get_clock (); |
1543 | #ifndef _WIN32 |
810 | now_floor = mn_now; |
1544 | if (flags & EVFLAG_FORKCHECK) |
811 | rtmn_diff = ev_rt_now - mn_now; |
1545 | curpid = getpid (); |
|
|
1546 | #endif |
812 | |
1547 | |
813 | if (!(flags & EVFLAG_NOENV) |
1548 | if (!(flags & EVFLAG_NOENV) |
814 | && !enable_secure () |
1549 | && !enable_secure () |
815 | && getenv ("LIBEV_FLAGS")) |
1550 | && getenv ("LIBEV_FLAGS")) |
816 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1551 | flags = atoi (getenv ("LIBEV_FLAGS")); |
817 | |
1552 | |
818 | if (!(flags & EVMETHOD_ALL)) |
1553 | ev_rt_now = ev_time (); |
|
|
1554 | mn_now = get_clock (); |
|
|
1555 | now_floor = mn_now; |
|
|
1556 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1557 | #if EV_MINIMAL < 2 |
|
|
1558 | invoke_cb = ev_invoke_pending; |
|
|
1559 | #endif |
|
|
1560 | |
|
|
1561 | io_blocktime = 0.; |
|
|
1562 | timeout_blocktime = 0.; |
|
|
1563 | backend = 0; |
|
|
1564 | backend_fd = -1; |
|
|
1565 | gotasync = 0; |
|
|
1566 | #if EV_USE_INOTIFY |
|
|
1567 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
1568 | #endif |
|
|
1569 | #if EV_USE_SIGNALFD |
|
|
1570 | sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; |
|
|
1571 | #endif |
|
|
1572 | |
|
|
1573 | if (!(flags & 0x0000ffffU)) |
|
|
1574 | flags |= ev_recommended_backends (); |
|
|
1575 | |
|
|
1576 | #if EV_USE_PORT |
|
|
1577 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1578 | #endif |
|
|
1579 | #if EV_USE_KQUEUE |
|
|
1580 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1581 | #endif |
|
|
1582 | #if EV_USE_EPOLL |
|
|
1583 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1584 | #endif |
|
|
1585 | #if EV_USE_POLL |
|
|
1586 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1587 | #endif |
|
|
1588 | #if EV_USE_SELECT |
|
|
1589 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1593 | |
|
|
1594 | ev_init (&pipe_w, pipecb); |
|
|
1595 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1596 | } |
|
|
1597 | } |
|
|
1598 | |
|
|
1599 | /* free up a loop structure */ |
|
|
1600 | static void noinline |
|
|
1601 | loop_destroy (EV_P) |
|
|
1602 | { |
|
|
1603 | int i; |
|
|
1604 | |
|
|
1605 | if (ev_is_active (&pipe_w)) |
|
|
1606 | { |
|
|
1607 | /*ev_ref (EV_A);*/ |
|
|
1608 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
1609 | |
|
|
1610 | #if EV_USE_EVENTFD |
|
|
1611 | if (evfd >= 0) |
|
|
1612 | close (evfd); |
|
|
1613 | #endif |
|
|
1614 | |
|
|
1615 | if (evpipe [0] >= 0) |
819 | { |
1616 | { |
820 | flags |= EVMETHOD_ALL; |
1617 | close (evpipe [0]); |
821 | #if EV_USE_KQUEUE && !defined (__NetBSD__) |
1618 | close (evpipe [1]); |
822 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
823 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
824 | flags &= ~EVMETHOD_KQUEUE; |
|
|
825 | #endif |
|
|
826 | } |
1619 | } |
|
|
1620 | } |
827 | |
1621 | |
828 | method = 0; |
1622 | #if EV_USE_SIGNALFD |
|
|
1623 | if (ev_is_active (&sigfd_w)) |
|
|
1624 | { |
|
|
1625 | /*ev_ref (EV_A);*/ |
|
|
1626 | /*ev_io_stop (EV_A_ &sigfd_w);*/ |
|
|
1627 | |
|
|
1628 | close (sigfd); |
|
|
1629 | } |
|
|
1630 | #endif |
|
|
1631 | |
|
|
1632 | #if EV_USE_INOTIFY |
|
|
1633 | if (fs_fd >= 0) |
|
|
1634 | close (fs_fd); |
|
|
1635 | #endif |
|
|
1636 | |
|
|
1637 | if (backend_fd >= 0) |
|
|
1638 | close (backend_fd); |
|
|
1639 | |
829 | #if EV_USE_PORT |
1640 | #if EV_USE_PORT |
830 | if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); |
1641 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
831 | #endif |
1642 | #endif |
832 | #if EV_USE_KQUEUE |
1643 | #if EV_USE_KQUEUE |
833 | if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); |
1644 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
834 | #endif |
1645 | #endif |
835 | #if EV_USE_EPOLL |
1646 | #if EV_USE_EPOLL |
836 | if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); |
1647 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
837 | #endif |
1648 | #endif |
838 | #if EV_USE_POLL |
1649 | #if EV_USE_POLL |
839 | if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); |
1650 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
840 | #endif |
1651 | #endif |
841 | #if EV_USE_SELECT |
1652 | #if EV_USE_SELECT |
842 | if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); |
1653 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
843 | #endif |
1654 | #endif |
844 | |
1655 | |
845 | ev_init (&sigev, sigcb); |
1656 | for (i = NUMPRI; i--; ) |
846 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
847 | } |
1657 | { |
848 | } |
1658 | array_free (pending, [i]); |
|
|
1659 | #if EV_IDLE_ENABLE |
|
|
1660 | array_free (idle, [i]); |
|
|
1661 | #endif |
|
|
1662 | } |
849 | |
1663 | |
850 | static void |
1664 | ev_free (anfds); anfds = 0; anfdmax = 0; |
851 | loop_destroy (EV_P) |
|
|
852 | { |
|
|
853 | int i; |
|
|
854 | |
1665 | |
|
|
1666 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1667 | array_free (rfeed, EMPTY); |
|
|
1668 | array_free (fdchange, EMPTY); |
|
|
1669 | array_free (timer, EMPTY); |
|
|
1670 | #if EV_PERIODIC_ENABLE |
|
|
1671 | array_free (periodic, EMPTY); |
|
|
1672 | #endif |
|
|
1673 | #if EV_FORK_ENABLE |
|
|
1674 | array_free (fork, EMPTY); |
|
|
1675 | #endif |
|
|
1676 | array_free (prepare, EMPTY); |
|
|
1677 | array_free (check, EMPTY); |
|
|
1678 | #if EV_ASYNC_ENABLE |
|
|
1679 | array_free (async, EMPTY); |
|
|
1680 | #endif |
|
|
1681 | |
|
|
1682 | backend = 0; |
|
|
1683 | } |
|
|
1684 | |
|
|
1685 | #if EV_USE_INOTIFY |
|
|
1686 | inline_size void infy_fork (EV_P); |
|
|
1687 | #endif |
|
|
1688 | |
|
|
1689 | inline_size void |
|
|
1690 | loop_fork (EV_P) |
|
|
1691 | { |
855 | #if EV_USE_PORT |
1692 | #if EV_USE_PORT |
856 | if (method == EVMETHOD_PORT ) port_destroy (EV_A); |
1693 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
857 | #endif |
1694 | #endif |
858 | #if EV_USE_KQUEUE |
1695 | #if EV_USE_KQUEUE |
859 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
1696 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
860 | #endif |
1697 | #endif |
861 | #if EV_USE_EPOLL |
1698 | #if EV_USE_EPOLL |
862 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
863 | #endif |
|
|
864 | #if EV_USE_POLL |
|
|
865 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
866 | #endif |
|
|
867 | #if EV_USE_SELECT |
|
|
868 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
869 | #endif |
|
|
870 | |
|
|
871 | for (i = NUMPRI; i--; ) |
|
|
872 | array_free (pending, [i]); |
|
|
873 | |
|
|
874 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
875 | array_free (fdchange, EMPTY0); |
|
|
876 | array_free (timer, EMPTY0); |
|
|
877 | #if EV_PERIODICS |
|
|
878 | array_free (periodic, EMPTY0); |
|
|
879 | #endif |
|
|
880 | array_free (idle, EMPTY0); |
|
|
881 | array_free (prepare, EMPTY0); |
|
|
882 | array_free (check, EMPTY0); |
|
|
883 | |
|
|
884 | method = 0; |
|
|
885 | } |
|
|
886 | |
|
|
887 | static void |
|
|
888 | loop_fork (EV_P) |
|
|
889 | { |
|
|
890 | #if EV_USE_PORT |
|
|
891 | if (method == EVMETHOD_PORT ) port_fork (EV_A); |
|
|
892 | #endif |
|
|
893 | #if EV_USE_KQUEUE |
|
|
894 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
895 | #endif |
|
|
896 | #if EV_USE_EPOLL |
|
|
897 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
1699 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
898 | #endif |
1700 | #endif |
|
|
1701 | #if EV_USE_INOTIFY |
|
|
1702 | infy_fork (EV_A); |
|
|
1703 | #endif |
899 | |
1704 | |
900 | if (ev_is_active (&sigev)) |
1705 | if (ev_is_active (&pipe_w)) |
901 | { |
1706 | { |
902 | /* default loop */ |
1707 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1708 | /* while we modify the fd vars */ |
|
|
1709 | gotsig = 1; |
|
|
1710 | #if EV_ASYNC_ENABLE |
|
|
1711 | gotasync = 1; |
|
|
1712 | #endif |
903 | |
1713 | |
904 | ev_ref (EV_A); |
1714 | ev_ref (EV_A); |
905 | ev_io_stop (EV_A_ &sigev); |
1715 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1716 | |
|
|
1717 | #if EV_USE_EVENTFD |
|
|
1718 | if (evfd >= 0) |
|
|
1719 | close (evfd); |
|
|
1720 | #endif |
|
|
1721 | |
|
|
1722 | if (evpipe [0] >= 0) |
|
|
1723 | { |
906 | close (sigpipe [0]); |
1724 | close (evpipe [0]); |
907 | close (sigpipe [1]); |
1725 | close (evpipe [1]); |
|
|
1726 | } |
908 | |
1727 | |
909 | while (pipe (sigpipe)) |
|
|
910 | syserr ("(libev) error creating pipe"); |
|
|
911 | |
|
|
912 | siginit (EV_A); |
1728 | evpipe_init (EV_A); |
|
|
1729 | /* now iterate over everything, in case we missed something */ |
|
|
1730 | pipecb (EV_A_ &pipe_w, EV_READ); |
913 | } |
1731 | } |
914 | |
1732 | |
915 | postfork = 0; |
1733 | postfork = 0; |
916 | } |
1734 | } |
917 | |
1735 | |
918 | #if EV_MULTIPLICITY |
1736 | #if EV_MULTIPLICITY |
|
|
1737 | |
919 | struct ev_loop * |
1738 | struct ev_loop * |
920 | ev_loop_new (unsigned int flags) |
1739 | ev_loop_new (unsigned int flags) |
921 | { |
1740 | { |
922 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1741 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
923 | |
1742 | |
924 | memset (loop, 0, sizeof (struct ev_loop)); |
1743 | memset (EV_A, 0, sizeof (struct ev_loop)); |
925 | |
|
|
926 | loop_init (EV_A_ flags); |
1744 | loop_init (EV_A_ flags); |
927 | |
1745 | |
928 | if (ev_method (EV_A)) |
1746 | if (ev_backend (EV_A)) |
929 | return loop; |
1747 | return EV_A; |
930 | |
1748 | |
931 | return 0; |
1749 | return 0; |
932 | } |
1750 | } |
933 | |
1751 | |
934 | void |
1752 | void |
… | |
… | |
939 | } |
1757 | } |
940 | |
1758 | |
941 | void |
1759 | void |
942 | ev_loop_fork (EV_P) |
1760 | ev_loop_fork (EV_P) |
943 | { |
1761 | { |
944 | postfork = 1; |
1762 | postfork = 1; /* must be in line with ev_default_fork */ |
945 | } |
1763 | } |
|
|
1764 | #endif /* multiplicity */ |
946 | |
1765 | |
|
|
1766 | #if EV_VERIFY |
|
|
1767 | static void noinline |
|
|
1768 | verify_watcher (EV_P_ W w) |
|
|
1769 | { |
|
|
1770 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1771 | |
|
|
1772 | if (w->pending) |
|
|
1773 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1774 | } |
|
|
1775 | |
|
|
1776 | static void noinline |
|
|
1777 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1778 | { |
|
|
1779 | int i; |
|
|
1780 | |
|
|
1781 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1782 | { |
|
|
1783 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1784 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1785 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1786 | |
|
|
1787 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1788 | } |
|
|
1789 | } |
|
|
1790 | |
|
|
1791 | static void noinline |
|
|
1792 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1793 | { |
|
|
1794 | while (cnt--) |
|
|
1795 | { |
|
|
1796 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1797 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1798 | } |
|
|
1799 | } |
|
|
1800 | #endif |
|
|
1801 | |
|
|
1802 | #if EV_MINIMAL < 2 |
|
|
1803 | void |
|
|
1804 | ev_loop_verify (EV_P) |
|
|
1805 | { |
|
|
1806 | #if EV_VERIFY |
|
|
1807 | int i; |
|
|
1808 | WL w; |
|
|
1809 | |
|
|
1810 | assert (activecnt >= -1); |
|
|
1811 | |
|
|
1812 | assert (fdchangemax >= fdchangecnt); |
|
|
1813 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1814 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1815 | |
|
|
1816 | assert (anfdmax >= 0); |
|
|
1817 | for (i = 0; i < anfdmax; ++i) |
|
|
1818 | for (w = anfds [i].head; w; w = w->next) |
|
|
1819 | { |
|
|
1820 | verify_watcher (EV_A_ (W)w); |
|
|
1821 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
1822 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
1823 | } |
|
|
1824 | |
|
|
1825 | assert (timermax >= timercnt); |
|
|
1826 | verify_heap (EV_A_ timers, timercnt); |
|
|
1827 | |
|
|
1828 | #if EV_PERIODIC_ENABLE |
|
|
1829 | assert (periodicmax >= periodiccnt); |
|
|
1830 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1831 | #endif |
|
|
1832 | |
|
|
1833 | for (i = NUMPRI; i--; ) |
|
|
1834 | { |
|
|
1835 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1836 | #if EV_IDLE_ENABLE |
|
|
1837 | assert (idleall >= 0); |
|
|
1838 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1839 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1840 | #endif |
|
|
1841 | } |
|
|
1842 | |
|
|
1843 | #if EV_FORK_ENABLE |
|
|
1844 | assert (forkmax >= forkcnt); |
|
|
1845 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1846 | #endif |
|
|
1847 | |
|
|
1848 | #if EV_ASYNC_ENABLE |
|
|
1849 | assert (asyncmax >= asynccnt); |
|
|
1850 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1851 | #endif |
|
|
1852 | |
|
|
1853 | assert (preparemax >= preparecnt); |
|
|
1854 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1855 | |
|
|
1856 | assert (checkmax >= checkcnt); |
|
|
1857 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1858 | |
|
|
1859 | # if 0 |
|
|
1860 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1861 | for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig) |
|
|
1862 | # endif |
|
|
1863 | #endif |
|
|
1864 | } |
947 | #endif |
1865 | #endif |
948 | |
1866 | |
949 | #if EV_MULTIPLICITY |
1867 | #if EV_MULTIPLICITY |
950 | struct ev_loop * |
1868 | struct ev_loop * |
951 | ev_default_loop_init (unsigned int flags) |
1869 | ev_default_loop_init (unsigned int flags) |
952 | #else |
1870 | #else |
953 | int |
1871 | int |
954 | ev_default_loop (unsigned int flags) |
1872 | ev_default_loop (unsigned int flags) |
955 | #endif |
1873 | #endif |
956 | { |
1874 | { |
957 | if (sigpipe [0] == sigpipe [1]) |
|
|
958 | if (pipe (sigpipe)) |
|
|
959 | return 0; |
|
|
960 | |
|
|
961 | if (!ev_default_loop_ptr) |
1875 | if (!ev_default_loop_ptr) |
962 | { |
1876 | { |
963 | #if EV_MULTIPLICITY |
1877 | #if EV_MULTIPLICITY |
964 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1878 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
965 | #else |
1879 | #else |
966 | ev_default_loop_ptr = 1; |
1880 | ev_default_loop_ptr = 1; |
967 | #endif |
1881 | #endif |
968 | |
1882 | |
969 | loop_init (EV_A_ flags); |
1883 | loop_init (EV_A_ flags); |
970 | |
1884 | |
971 | if (ev_method (EV_A)) |
1885 | if (ev_backend (EV_A)) |
972 | { |
1886 | { |
973 | siginit (EV_A); |
|
|
974 | |
|
|
975 | #ifndef _WIN32 |
1887 | #ifndef _WIN32 |
976 | ev_signal_init (&childev, childcb, SIGCHLD); |
1888 | ev_signal_init (&childev, childcb, SIGCHLD); |
977 | ev_set_priority (&childev, EV_MAXPRI); |
1889 | ev_set_priority (&childev, EV_MAXPRI); |
978 | ev_signal_start (EV_A_ &childev); |
1890 | ev_signal_start (EV_A_ &childev); |
979 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1891 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
988 | |
1900 | |
989 | void |
1901 | void |
990 | ev_default_destroy (void) |
1902 | ev_default_destroy (void) |
991 | { |
1903 | { |
992 | #if EV_MULTIPLICITY |
1904 | #if EV_MULTIPLICITY |
993 | struct ev_loop *loop = ev_default_loop_ptr; |
1905 | EV_P = ev_default_loop_ptr; |
994 | #endif |
1906 | #endif |
|
|
1907 | |
|
|
1908 | ev_default_loop_ptr = 0; |
995 | |
1909 | |
996 | #ifndef _WIN32 |
1910 | #ifndef _WIN32 |
997 | ev_ref (EV_A); /* child watcher */ |
1911 | ev_ref (EV_A); /* child watcher */ |
998 | ev_signal_stop (EV_A_ &childev); |
1912 | ev_signal_stop (EV_A_ &childev); |
999 | #endif |
1913 | #endif |
1000 | |
1914 | |
1001 | ev_ref (EV_A); /* signal watcher */ |
|
|
1002 | ev_io_stop (EV_A_ &sigev); |
|
|
1003 | |
|
|
1004 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1005 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1006 | |
|
|
1007 | loop_destroy (EV_A); |
1915 | loop_destroy (EV_A); |
1008 | } |
1916 | } |
1009 | |
1917 | |
1010 | void |
1918 | void |
1011 | ev_default_fork (void) |
1919 | ev_default_fork (void) |
1012 | { |
1920 | { |
1013 | #if EV_MULTIPLICITY |
1921 | #if EV_MULTIPLICITY |
1014 | struct ev_loop *loop = ev_default_loop_ptr; |
1922 | EV_P = ev_default_loop_ptr; |
1015 | #endif |
1923 | #endif |
1016 | |
1924 | |
1017 | if (method) |
1925 | postfork = 1; /* must be in line with ev_loop_fork */ |
1018 | postfork = 1; |
|
|
1019 | } |
1926 | } |
1020 | |
1927 | |
1021 | /*****************************************************************************/ |
1928 | /*****************************************************************************/ |
1022 | |
1929 | |
1023 | static int |
1930 | void |
1024 | any_pending (EV_P) |
1931 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1932 | { |
|
|
1933 | EV_CB_INVOKE ((W)w, revents); |
|
|
1934 | } |
|
|
1935 | |
|
|
1936 | unsigned int |
|
|
1937 | ev_pending_count (EV_P) |
1025 | { |
1938 | { |
1026 | int pri; |
1939 | int pri; |
|
|
1940 | unsigned int count = 0; |
1027 | |
1941 | |
1028 | for (pri = NUMPRI; pri--; ) |
1942 | for (pri = NUMPRI; pri--; ) |
1029 | if (pendingcnt [pri]) |
1943 | count += pendingcnt [pri]; |
1030 | return 1; |
|
|
1031 | |
1944 | |
1032 | return 0; |
1945 | return count; |
1033 | } |
1946 | } |
1034 | |
1947 | |
1035 | inline void |
1948 | void noinline |
1036 | call_pending (EV_P) |
1949 | ev_invoke_pending (EV_P) |
1037 | { |
1950 | { |
1038 | int pri; |
1951 | int pri; |
1039 | |
1952 | |
1040 | for (pri = NUMPRI; pri--; ) |
1953 | for (pri = NUMPRI; pri--; ) |
1041 | while (pendingcnt [pri]) |
1954 | while (pendingcnt [pri]) |
1042 | { |
1955 | { |
1043 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1956 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1044 | |
1957 | |
1045 | if (expect_true (p->w)) |
1958 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
1046 | { |
1959 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
1960 | |
1047 | p->w->pending = 0; |
1961 | p->w->pending = 0; |
1048 | EV_CB_INVOKE (p->w, p->events); |
1962 | EV_CB_INVOKE (p->w, p->events); |
1049 | } |
1963 | EV_FREQUENT_CHECK; |
1050 | } |
1964 | } |
1051 | } |
1965 | } |
1052 | |
1966 | |
|
|
1967 | #if EV_IDLE_ENABLE |
|
|
1968 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
1969 | /* only when higher priorities are idle" logic */ |
1053 | inline void |
1970 | inline_size void |
|
|
1971 | idle_reify (EV_P) |
|
|
1972 | { |
|
|
1973 | if (expect_false (idleall)) |
|
|
1974 | { |
|
|
1975 | int pri; |
|
|
1976 | |
|
|
1977 | for (pri = NUMPRI; pri--; ) |
|
|
1978 | { |
|
|
1979 | if (pendingcnt [pri]) |
|
|
1980 | break; |
|
|
1981 | |
|
|
1982 | if (idlecnt [pri]) |
|
|
1983 | { |
|
|
1984 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1985 | break; |
|
|
1986 | } |
|
|
1987 | } |
|
|
1988 | } |
|
|
1989 | } |
|
|
1990 | #endif |
|
|
1991 | |
|
|
1992 | /* make timers pending */ |
|
|
1993 | inline_size void |
1054 | timers_reify (EV_P) |
1994 | timers_reify (EV_P) |
1055 | { |
1995 | { |
|
|
1996 | EV_FREQUENT_CHECK; |
|
|
1997 | |
1056 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
1998 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
1057 | { |
1999 | { |
1058 | struct ev_timer *w = timers [0]; |
2000 | do |
1059 | |
|
|
1060 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
1061 | |
|
|
1062 | /* first reschedule or stop timer */ |
|
|
1063 | if (w->repeat) |
|
|
1064 | { |
2001 | { |
|
|
2002 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2003 | |
|
|
2004 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2005 | |
|
|
2006 | /* first reschedule or stop timer */ |
|
|
2007 | if (w->repeat) |
|
|
2008 | { |
|
|
2009 | ev_at (w) += w->repeat; |
|
|
2010 | if (ev_at (w) < mn_now) |
|
|
2011 | ev_at (w) = mn_now; |
|
|
2012 | |
1065 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2013 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1066 | |
2014 | |
1067 | ((WT)w)->at += w->repeat; |
2015 | ANHE_at_cache (timers [HEAP0]); |
1068 | if (((WT)w)->at < mn_now) |
|
|
1069 | ((WT)w)->at = mn_now; |
|
|
1070 | |
|
|
1071 | downheap ((WT *)timers, timercnt, 0); |
2016 | downheap (timers, timercnt, HEAP0); |
|
|
2017 | } |
|
|
2018 | else |
|
|
2019 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2020 | |
|
|
2021 | EV_FREQUENT_CHECK; |
|
|
2022 | feed_reverse (EV_A_ (W)w); |
1072 | } |
2023 | } |
1073 | else |
2024 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
1074 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1075 | |
2025 | |
1076 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
2026 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
1077 | } |
2027 | } |
1078 | } |
2028 | } |
1079 | |
2029 | |
1080 | #if EV_PERIODICS |
2030 | #if EV_PERIODIC_ENABLE |
|
|
2031 | /* make periodics pending */ |
1081 | inline void |
2032 | inline_size void |
1082 | periodics_reify (EV_P) |
2033 | periodics_reify (EV_P) |
1083 | { |
2034 | { |
|
|
2035 | EV_FREQUENT_CHECK; |
|
|
2036 | |
1084 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
2037 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1085 | { |
2038 | { |
1086 | struct ev_periodic *w = periodics [0]; |
2039 | int feed_count = 0; |
1087 | |
2040 | |
|
|
2041 | do |
|
|
2042 | { |
|
|
2043 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2044 | |
1088 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
2045 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1089 | |
2046 | |
1090 | /* first reschedule or stop timer */ |
2047 | /* first reschedule or stop timer */ |
|
|
2048 | if (w->reschedule_cb) |
|
|
2049 | { |
|
|
2050 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2051 | |
|
|
2052 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2053 | |
|
|
2054 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2055 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2056 | } |
|
|
2057 | else if (w->interval) |
|
|
2058 | { |
|
|
2059 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2060 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2061 | /* this might happen because of floating point inexactness */ |
|
|
2062 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2063 | { |
|
|
2064 | ev_at (w) += w->interval; |
|
|
2065 | |
|
|
2066 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2067 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2068 | /* has effectively asked to get triggered more often than possible */ |
|
|
2069 | if (ev_at (w) < ev_rt_now) |
|
|
2070 | ev_at (w) = ev_rt_now; |
|
|
2071 | } |
|
|
2072 | |
|
|
2073 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2074 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2075 | } |
|
|
2076 | else |
|
|
2077 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2078 | |
|
|
2079 | EV_FREQUENT_CHECK; |
|
|
2080 | feed_reverse (EV_A_ (W)w); |
|
|
2081 | } |
|
|
2082 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2083 | |
|
|
2084 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2085 | } |
|
|
2086 | } |
|
|
2087 | |
|
|
2088 | /* simply recalculate all periodics */ |
|
|
2089 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
|
|
2090 | static void noinline |
|
|
2091 | periodics_reschedule (EV_P) |
|
|
2092 | { |
|
|
2093 | int i; |
|
|
2094 | |
|
|
2095 | /* adjust periodics after time jump */ |
|
|
2096 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2097 | { |
|
|
2098 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2099 | |
1091 | if (w->reschedule_cb) |
2100 | if (w->reschedule_cb) |
|
|
2101 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2102 | else if (w->interval) |
|
|
2103 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2104 | |
|
|
2105 | ANHE_at_cache (periodics [i]); |
|
|
2106 | } |
|
|
2107 | |
|
|
2108 | reheap (periodics, periodiccnt); |
|
|
2109 | } |
|
|
2110 | #endif |
|
|
2111 | |
|
|
2112 | /* adjust all timers by a given offset */ |
|
|
2113 | static void noinline |
|
|
2114 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2115 | { |
|
|
2116 | int i; |
|
|
2117 | |
|
|
2118 | for (i = 0; i < timercnt; ++i) |
|
|
2119 | { |
|
|
2120 | ANHE *he = timers + i + HEAP0; |
|
|
2121 | ANHE_w (*he)->at += adjust; |
|
|
2122 | ANHE_at_cache (*he); |
|
|
2123 | } |
|
|
2124 | } |
|
|
2125 | |
|
|
2126 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2127 | /* also detetc if there was a timejump, and act accordingly */ |
|
|
2128 | inline_speed void |
|
|
2129 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2130 | { |
|
|
2131 | #if EV_USE_MONOTONIC |
|
|
2132 | if (expect_true (have_monotonic)) |
|
|
2133 | { |
|
|
2134 | int i; |
|
|
2135 | ev_tstamp odiff = rtmn_diff; |
|
|
2136 | |
|
|
2137 | mn_now = get_clock (); |
|
|
2138 | |
|
|
2139 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2140 | /* interpolate in the meantime */ |
|
|
2141 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1092 | { |
2142 | { |
1093 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
2143 | ev_rt_now = rtmn_diff + mn_now; |
1094 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
2144 | return; |
1095 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1096 | } |
2145 | } |
1097 | else if (w->interval) |
|
|
1098 | { |
|
|
1099 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1100 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1101 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1102 | } |
|
|
1103 | else |
|
|
1104 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1105 | |
2146 | |
1106 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1107 | } |
|
|
1108 | } |
|
|
1109 | |
|
|
1110 | static void |
|
|
1111 | periodics_reschedule (EV_P) |
|
|
1112 | { |
|
|
1113 | int i; |
|
|
1114 | |
|
|
1115 | /* adjust periodics after time jump */ |
|
|
1116 | for (i = 0; i < periodiccnt; ++i) |
|
|
1117 | { |
|
|
1118 | struct ev_periodic *w = periodics [i]; |
|
|
1119 | |
|
|
1120 | if (w->reschedule_cb) |
|
|
1121 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1122 | else if (w->interval) |
|
|
1123 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | /* now rebuild the heap */ |
|
|
1127 | for (i = periodiccnt >> 1; i--; ) |
|
|
1128 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1129 | } |
|
|
1130 | #endif |
|
|
1131 | |
|
|
1132 | inline int |
|
|
1133 | time_update_monotonic (EV_P) |
|
|
1134 | { |
|
|
1135 | mn_now = get_clock (); |
|
|
1136 | |
|
|
1137 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1138 | { |
|
|
1139 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1140 | return 0; |
|
|
1141 | } |
|
|
1142 | else |
|
|
1143 | { |
|
|
1144 | now_floor = mn_now; |
2147 | now_floor = mn_now; |
1145 | ev_rt_now = ev_time (); |
2148 | ev_rt_now = ev_time (); |
1146 | return 1; |
|
|
1147 | } |
|
|
1148 | } |
|
|
1149 | |
2149 | |
1150 | inline void |
2150 | /* loop a few times, before making important decisions. |
1151 | time_update (EV_P) |
2151 | * on the choice of "4": one iteration isn't enough, |
1152 | { |
2152 | * in case we get preempted during the calls to |
1153 | int i; |
2153 | * ev_time and get_clock. a second call is almost guaranteed |
1154 | |
2154 | * to succeed in that case, though. and looping a few more times |
1155 | #if EV_USE_MONOTONIC |
2155 | * doesn't hurt either as we only do this on time-jumps or |
1156 | if (expect_true (have_monotonic)) |
2156 | * in the unlikely event of having been preempted here. |
1157 | { |
2157 | */ |
1158 | if (time_update_monotonic (EV_A)) |
2158 | for (i = 4; --i; ) |
1159 | { |
2159 | { |
1160 | ev_tstamp odiff = rtmn_diff; |
|
|
1161 | |
|
|
1162 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1163 | { |
|
|
1164 | rtmn_diff = ev_rt_now - mn_now; |
2160 | rtmn_diff = ev_rt_now - mn_now; |
1165 | |
2161 | |
1166 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
2162 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1167 | return; /* all is well */ |
2163 | return; /* all is well */ |
1168 | |
2164 | |
1169 | ev_rt_now = ev_time (); |
2165 | ev_rt_now = ev_time (); |
1170 | mn_now = get_clock (); |
2166 | mn_now = get_clock (); |
1171 | now_floor = mn_now; |
2167 | now_floor = mn_now; |
1172 | } |
2168 | } |
1173 | |
2169 | |
|
|
2170 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2171 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1174 | # if EV_PERIODICS |
2172 | # if EV_PERIODIC_ENABLE |
|
|
2173 | periodics_reschedule (EV_A); |
|
|
2174 | # endif |
|
|
2175 | } |
|
|
2176 | else |
|
|
2177 | #endif |
|
|
2178 | { |
|
|
2179 | ev_rt_now = ev_time (); |
|
|
2180 | |
|
|
2181 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
2182 | { |
|
|
2183 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
2184 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
2185 | #if EV_PERIODIC_ENABLE |
1175 | periodics_reschedule (EV_A); |
2186 | periodics_reschedule (EV_A); |
1176 | # endif |
2187 | #endif |
1177 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1178 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1179 | } |
2188 | } |
1180 | } |
|
|
1181 | else |
|
|
1182 | #endif |
|
|
1183 | { |
|
|
1184 | ev_rt_now = ev_time (); |
|
|
1185 | |
|
|
1186 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1187 | { |
|
|
1188 | #if EV_PERIODICS |
|
|
1189 | periodics_reschedule (EV_A); |
|
|
1190 | #endif |
|
|
1191 | |
|
|
1192 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1193 | for (i = 0; i < timercnt; ++i) |
|
|
1194 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1195 | } |
|
|
1196 | |
2189 | |
1197 | mn_now = ev_rt_now; |
2190 | mn_now = ev_rt_now; |
1198 | } |
2191 | } |
1199 | } |
2192 | } |
1200 | |
2193 | |
1201 | void |
2194 | void |
1202 | ev_ref (EV_P) |
|
|
1203 | { |
|
|
1204 | ++activecnt; |
|
|
1205 | } |
|
|
1206 | |
|
|
1207 | void |
|
|
1208 | ev_unref (EV_P) |
|
|
1209 | { |
|
|
1210 | --activecnt; |
|
|
1211 | } |
|
|
1212 | |
|
|
1213 | static int loop_done; |
|
|
1214 | |
|
|
1215 | void |
|
|
1216 | ev_loop (EV_P_ int flags) |
2195 | ev_loop (EV_P_ int flags) |
1217 | { |
2196 | { |
1218 | double block; |
2197 | #if EV_MINIMAL < 2 |
1219 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
2198 | ++loop_depth; |
|
|
2199 | #endif |
1220 | |
2200 | |
1221 | while (activecnt) |
2201 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
|
|
2202 | |
|
|
2203 | loop_done = EVUNLOOP_CANCEL; |
|
|
2204 | |
|
|
2205 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
2206 | |
|
|
2207 | do |
1222 | { |
2208 | { |
|
|
2209 | #if EV_VERIFY >= 2 |
|
|
2210 | ev_loop_verify (EV_A); |
|
|
2211 | #endif |
|
|
2212 | |
|
|
2213 | #ifndef _WIN32 |
|
|
2214 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2215 | if (expect_false (getpid () != curpid)) |
|
|
2216 | { |
|
|
2217 | curpid = getpid (); |
|
|
2218 | postfork = 1; |
|
|
2219 | } |
|
|
2220 | #endif |
|
|
2221 | |
|
|
2222 | #if EV_FORK_ENABLE |
|
|
2223 | /* we might have forked, so queue fork handlers */ |
|
|
2224 | if (expect_false (postfork)) |
|
|
2225 | if (forkcnt) |
|
|
2226 | { |
|
|
2227 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2228 | EV_INVOKE_PENDING; |
|
|
2229 | } |
|
|
2230 | #endif |
|
|
2231 | |
1223 | /* queue check watchers (and execute them) */ |
2232 | /* queue prepare watchers (and execute them) */ |
1224 | if (expect_false (preparecnt)) |
2233 | if (expect_false (preparecnt)) |
1225 | { |
2234 | { |
1226 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2235 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1227 | call_pending (EV_A); |
2236 | EV_INVOKE_PENDING; |
1228 | } |
2237 | } |
|
|
2238 | |
|
|
2239 | if (expect_false (loop_done)) |
|
|
2240 | break; |
1229 | |
2241 | |
1230 | /* we might have forked, so reify kernel state if necessary */ |
2242 | /* we might have forked, so reify kernel state if necessary */ |
1231 | if (expect_false (postfork)) |
2243 | if (expect_false (postfork)) |
1232 | loop_fork (EV_A); |
2244 | loop_fork (EV_A); |
1233 | |
2245 | |
1234 | /* update fd-related kernel structures */ |
2246 | /* update fd-related kernel structures */ |
1235 | fd_reify (EV_A); |
2247 | fd_reify (EV_A); |
1236 | |
2248 | |
1237 | /* calculate blocking time */ |
2249 | /* calculate blocking time */ |
|
|
2250 | { |
|
|
2251 | ev_tstamp waittime = 0.; |
|
|
2252 | ev_tstamp sleeptime = 0.; |
1238 | |
2253 | |
1239 | /* we only need this for !monotonic clock or timers, but as we basically |
2254 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1240 | always have timers, we just calculate it always */ |
|
|
1241 | #if EV_USE_MONOTONIC |
|
|
1242 | if (expect_true (have_monotonic)) |
|
|
1243 | time_update_monotonic (EV_A); |
|
|
1244 | else |
|
|
1245 | #endif |
|
|
1246 | { |
2255 | { |
1247 | ev_rt_now = ev_time (); |
2256 | /* remember old timestamp for io_blocktime calculation */ |
1248 | mn_now = ev_rt_now; |
2257 | ev_tstamp prev_mn_now = mn_now; |
1249 | } |
|
|
1250 | |
2258 | |
1251 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
2259 | /* update time to cancel out callback processing overhead */ |
1252 | block = 0.; |
2260 | time_update (EV_A_ 1e100); |
1253 | else |
2261 | |
1254 | { |
|
|
1255 | block = MAX_BLOCKTIME; |
2262 | waittime = MAX_BLOCKTIME; |
1256 | |
2263 | |
1257 | if (timercnt) |
2264 | if (timercnt) |
1258 | { |
2265 | { |
1259 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
2266 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1260 | if (block > to) block = to; |
2267 | if (waittime > to) waittime = to; |
1261 | } |
2268 | } |
1262 | |
2269 | |
1263 | #if EV_PERIODICS |
2270 | #if EV_PERIODIC_ENABLE |
1264 | if (periodiccnt) |
2271 | if (periodiccnt) |
1265 | { |
2272 | { |
1266 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
2273 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1267 | if (block > to) block = to; |
2274 | if (waittime > to) waittime = to; |
1268 | } |
2275 | } |
1269 | #endif |
2276 | #endif |
1270 | |
2277 | |
1271 | if (expect_false (block < 0.)) block = 0.; |
2278 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2279 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2280 | waittime = timeout_blocktime; |
|
|
2281 | |
|
|
2282 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2283 | if (expect_false (io_blocktime)) |
|
|
2284 | { |
|
|
2285 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2286 | |
|
|
2287 | if (sleeptime > waittime - backend_fudge) |
|
|
2288 | sleeptime = waittime - backend_fudge; |
|
|
2289 | |
|
|
2290 | if (expect_true (sleeptime > 0.)) |
|
|
2291 | { |
|
|
2292 | ev_sleep (sleeptime); |
|
|
2293 | waittime -= sleeptime; |
|
|
2294 | } |
|
|
2295 | } |
1272 | } |
2296 | } |
1273 | |
2297 | |
1274 | method_poll (EV_A_ block); |
2298 | #if EV_MINIMAL < 2 |
|
|
2299 | ++loop_count; |
|
|
2300 | #endif |
|
|
2301 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
|
|
2302 | backend_poll (EV_A_ waittime); |
|
|
2303 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
1275 | |
2304 | |
1276 | /* update ev_rt_now, do magic */ |
2305 | /* update ev_rt_now, do magic */ |
1277 | time_update (EV_A); |
2306 | time_update (EV_A_ waittime + sleeptime); |
|
|
2307 | } |
1278 | |
2308 | |
1279 | /* queue pending timers and reschedule them */ |
2309 | /* queue pending timers and reschedule them */ |
1280 | timers_reify (EV_A); /* relative timers called last */ |
2310 | timers_reify (EV_A); /* relative timers called last */ |
1281 | #if EV_PERIODICS |
2311 | #if EV_PERIODIC_ENABLE |
1282 | periodics_reify (EV_A); /* absolute timers called first */ |
2312 | periodics_reify (EV_A); /* absolute timers called first */ |
1283 | #endif |
2313 | #endif |
1284 | |
2314 | |
|
|
2315 | #if EV_IDLE_ENABLE |
1285 | /* queue idle watchers unless io or timers are pending */ |
2316 | /* queue idle watchers unless other events are pending */ |
1286 | if (idlecnt && !any_pending (EV_A)) |
2317 | idle_reify (EV_A); |
1287 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
2318 | #endif |
1288 | |
2319 | |
1289 | /* queue check watchers, to be executed first */ |
2320 | /* queue check watchers, to be executed first */ |
1290 | if (expect_false (checkcnt)) |
2321 | if (expect_false (checkcnt)) |
1291 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2322 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1292 | |
2323 | |
1293 | call_pending (EV_A); |
2324 | EV_INVOKE_PENDING; |
1294 | |
|
|
1295 | if (expect_false (loop_done)) |
|
|
1296 | break; |
|
|
1297 | } |
2325 | } |
|
|
2326 | while (expect_true ( |
|
|
2327 | activecnt |
|
|
2328 | && !loop_done |
|
|
2329 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2330 | )); |
1298 | |
2331 | |
1299 | if (loop_done != 2) |
2332 | if (loop_done == EVUNLOOP_ONE) |
1300 | loop_done = 0; |
2333 | loop_done = EVUNLOOP_CANCEL; |
|
|
2334 | |
|
|
2335 | #if EV_MINIMAL < 2 |
|
|
2336 | --loop_depth; |
|
|
2337 | #endif |
1301 | } |
2338 | } |
1302 | |
2339 | |
1303 | void |
2340 | void |
1304 | ev_unloop (EV_P_ int how) |
2341 | ev_unloop (EV_P_ int how) |
1305 | { |
2342 | { |
1306 | loop_done = how; |
2343 | loop_done = how; |
1307 | } |
2344 | } |
1308 | |
2345 | |
|
|
2346 | void |
|
|
2347 | ev_ref (EV_P) |
|
|
2348 | { |
|
|
2349 | ++activecnt; |
|
|
2350 | } |
|
|
2351 | |
|
|
2352 | void |
|
|
2353 | ev_unref (EV_P) |
|
|
2354 | { |
|
|
2355 | --activecnt; |
|
|
2356 | } |
|
|
2357 | |
|
|
2358 | void |
|
|
2359 | ev_now_update (EV_P) |
|
|
2360 | { |
|
|
2361 | time_update (EV_A_ 1e100); |
|
|
2362 | } |
|
|
2363 | |
|
|
2364 | void |
|
|
2365 | ev_suspend (EV_P) |
|
|
2366 | { |
|
|
2367 | ev_now_update (EV_A); |
|
|
2368 | } |
|
|
2369 | |
|
|
2370 | void |
|
|
2371 | ev_resume (EV_P) |
|
|
2372 | { |
|
|
2373 | ev_tstamp mn_prev = mn_now; |
|
|
2374 | |
|
|
2375 | ev_now_update (EV_A); |
|
|
2376 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2377 | #if EV_PERIODIC_ENABLE |
|
|
2378 | /* TODO: really do this? */ |
|
|
2379 | periodics_reschedule (EV_A); |
|
|
2380 | #endif |
|
|
2381 | } |
|
|
2382 | |
1309 | /*****************************************************************************/ |
2383 | /*****************************************************************************/ |
|
|
2384 | /* singly-linked list management, used when the expected list length is short */ |
1310 | |
2385 | |
1311 | inline void |
2386 | inline_size void |
1312 | wlist_add (WL *head, WL elem) |
2387 | wlist_add (WL *head, WL elem) |
1313 | { |
2388 | { |
1314 | elem->next = *head; |
2389 | elem->next = *head; |
1315 | *head = elem; |
2390 | *head = elem; |
1316 | } |
2391 | } |
1317 | |
2392 | |
1318 | inline void |
2393 | inline_size void |
1319 | wlist_del (WL *head, WL elem) |
2394 | wlist_del (WL *head, WL elem) |
1320 | { |
2395 | { |
1321 | while (*head) |
2396 | while (*head) |
1322 | { |
2397 | { |
1323 | if (*head == elem) |
2398 | if (*head == elem) |
… | |
… | |
1328 | |
2403 | |
1329 | head = &(*head)->next; |
2404 | head = &(*head)->next; |
1330 | } |
2405 | } |
1331 | } |
2406 | } |
1332 | |
2407 | |
|
|
2408 | /* internal, faster, version of ev_clear_pending */ |
1333 | inline void |
2409 | inline_speed void |
1334 | ev_clear_pending (EV_P_ W w) |
2410 | clear_pending (EV_P_ W w) |
1335 | { |
2411 | { |
1336 | if (w->pending) |
2412 | if (w->pending) |
1337 | { |
2413 | { |
1338 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
2414 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1339 | w->pending = 0; |
2415 | w->pending = 0; |
1340 | } |
2416 | } |
1341 | } |
2417 | } |
1342 | |
2418 | |
|
|
2419 | int |
|
|
2420 | ev_clear_pending (EV_P_ void *w) |
|
|
2421 | { |
|
|
2422 | W w_ = (W)w; |
|
|
2423 | int pending = w_->pending; |
|
|
2424 | |
|
|
2425 | if (expect_true (pending)) |
|
|
2426 | { |
|
|
2427 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2428 | p->w = (W)&pending_w; |
|
|
2429 | w_->pending = 0; |
|
|
2430 | return p->events; |
|
|
2431 | } |
|
|
2432 | else |
|
|
2433 | return 0; |
|
|
2434 | } |
|
|
2435 | |
1343 | inline void |
2436 | inline_size void |
|
|
2437 | pri_adjust (EV_P_ W w) |
|
|
2438 | { |
|
|
2439 | int pri = ev_priority (w); |
|
|
2440 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2441 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2442 | ev_set_priority (w, pri); |
|
|
2443 | } |
|
|
2444 | |
|
|
2445 | inline_speed void |
1344 | ev_start (EV_P_ W w, int active) |
2446 | ev_start (EV_P_ W w, int active) |
1345 | { |
2447 | { |
1346 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
2448 | pri_adjust (EV_A_ w); |
1347 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1348 | |
|
|
1349 | w->active = active; |
2449 | w->active = active; |
1350 | ev_ref (EV_A); |
2450 | ev_ref (EV_A); |
1351 | } |
2451 | } |
1352 | |
2452 | |
1353 | inline void |
2453 | inline_size void |
1354 | ev_stop (EV_P_ W w) |
2454 | ev_stop (EV_P_ W w) |
1355 | { |
2455 | { |
1356 | ev_unref (EV_A); |
2456 | ev_unref (EV_A); |
1357 | w->active = 0; |
2457 | w->active = 0; |
1358 | } |
2458 | } |
1359 | |
2459 | |
1360 | /*****************************************************************************/ |
2460 | /*****************************************************************************/ |
1361 | |
2461 | |
1362 | void |
2462 | void noinline |
1363 | ev_io_start (EV_P_ struct ev_io *w) |
2463 | ev_io_start (EV_P_ ev_io *w) |
1364 | { |
2464 | { |
1365 | int fd = w->fd; |
2465 | int fd = w->fd; |
1366 | |
2466 | |
1367 | if (expect_false (ev_is_active (w))) |
2467 | if (expect_false (ev_is_active (w))) |
1368 | return; |
2468 | return; |
1369 | |
2469 | |
1370 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2470 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2471 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2472 | |
|
|
2473 | EV_FREQUENT_CHECK; |
1371 | |
2474 | |
1372 | ev_start (EV_A_ (W)w, 1); |
2475 | ev_start (EV_A_ (W)w, 1); |
1373 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
2476 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1374 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2477 | wlist_add (&anfds[fd].head, (WL)w); |
1375 | |
2478 | |
1376 | fd_change (EV_A_ fd); |
2479 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
1377 | } |
2480 | w->events &= ~EV__IOFDSET; |
1378 | |
2481 | |
1379 | void |
2482 | EV_FREQUENT_CHECK; |
|
|
2483 | } |
|
|
2484 | |
|
|
2485 | void noinline |
1380 | ev_io_stop (EV_P_ struct ev_io *w) |
2486 | ev_io_stop (EV_P_ ev_io *w) |
1381 | { |
2487 | { |
1382 | ev_clear_pending (EV_A_ (W)w); |
2488 | clear_pending (EV_A_ (W)w); |
1383 | if (expect_false (!ev_is_active (w))) |
2489 | if (expect_false (!ev_is_active (w))) |
1384 | return; |
2490 | return; |
1385 | |
2491 | |
1386 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2492 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1387 | |
2493 | |
|
|
2494 | EV_FREQUENT_CHECK; |
|
|
2495 | |
1388 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2496 | wlist_del (&anfds[w->fd].head, (WL)w); |
1389 | ev_stop (EV_A_ (W)w); |
2497 | ev_stop (EV_A_ (W)w); |
1390 | |
2498 | |
1391 | fd_change (EV_A_ w->fd); |
2499 | fd_change (EV_A_ w->fd, 1); |
1392 | } |
|
|
1393 | |
2500 | |
1394 | void |
2501 | EV_FREQUENT_CHECK; |
|
|
2502 | } |
|
|
2503 | |
|
|
2504 | void noinline |
1395 | ev_timer_start (EV_P_ struct ev_timer *w) |
2505 | ev_timer_start (EV_P_ ev_timer *w) |
1396 | { |
2506 | { |
1397 | if (expect_false (ev_is_active (w))) |
2507 | if (expect_false (ev_is_active (w))) |
1398 | return; |
2508 | return; |
1399 | |
2509 | |
1400 | ((WT)w)->at += mn_now; |
2510 | ev_at (w) += mn_now; |
1401 | |
2511 | |
1402 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2512 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1403 | |
2513 | |
|
|
2514 | EV_FREQUENT_CHECK; |
|
|
2515 | |
|
|
2516 | ++timercnt; |
1404 | ev_start (EV_A_ (W)w, ++timercnt); |
2517 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1405 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
2518 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1406 | timers [timercnt - 1] = w; |
2519 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1407 | upheap ((WT *)timers, timercnt - 1); |
2520 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2521 | upheap (timers, ev_active (w)); |
1408 | |
2522 | |
|
|
2523 | EV_FREQUENT_CHECK; |
|
|
2524 | |
1409 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2525 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1410 | } |
2526 | } |
1411 | |
2527 | |
1412 | void |
2528 | void noinline |
1413 | ev_timer_stop (EV_P_ struct ev_timer *w) |
2529 | ev_timer_stop (EV_P_ ev_timer *w) |
1414 | { |
2530 | { |
1415 | ev_clear_pending (EV_A_ (W)w); |
2531 | clear_pending (EV_A_ (W)w); |
1416 | if (expect_false (!ev_is_active (w))) |
2532 | if (expect_false (!ev_is_active (w))) |
1417 | return; |
2533 | return; |
1418 | |
2534 | |
|
|
2535 | EV_FREQUENT_CHECK; |
|
|
2536 | |
|
|
2537 | { |
|
|
2538 | int active = ev_active (w); |
|
|
2539 | |
1419 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2540 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
1420 | |
2541 | |
|
|
2542 | --timercnt; |
|
|
2543 | |
1421 | if (expect_true (((W)w)->active < timercnt--)) |
2544 | if (expect_true (active < timercnt + HEAP0)) |
1422 | { |
2545 | { |
1423 | timers [((W)w)->active - 1] = timers [timercnt]; |
2546 | timers [active] = timers [timercnt + HEAP0]; |
1424 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2547 | adjustheap (timers, timercnt, active); |
1425 | } |
2548 | } |
|
|
2549 | } |
1426 | |
2550 | |
1427 | ((WT)w)->at -= mn_now; |
2551 | EV_FREQUENT_CHECK; |
|
|
2552 | |
|
|
2553 | ev_at (w) -= mn_now; |
1428 | |
2554 | |
1429 | ev_stop (EV_A_ (W)w); |
2555 | ev_stop (EV_A_ (W)w); |
1430 | } |
2556 | } |
1431 | |
2557 | |
1432 | void |
2558 | void noinline |
1433 | ev_timer_again (EV_P_ struct ev_timer *w) |
2559 | ev_timer_again (EV_P_ ev_timer *w) |
1434 | { |
2560 | { |
|
|
2561 | EV_FREQUENT_CHECK; |
|
|
2562 | |
1435 | if (ev_is_active (w)) |
2563 | if (ev_is_active (w)) |
1436 | { |
2564 | { |
1437 | if (w->repeat) |
2565 | if (w->repeat) |
1438 | { |
2566 | { |
1439 | ((WT)w)->at = mn_now + w->repeat; |
2567 | ev_at (w) = mn_now + w->repeat; |
|
|
2568 | ANHE_at_cache (timers [ev_active (w)]); |
1440 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2569 | adjustheap (timers, timercnt, ev_active (w)); |
1441 | } |
2570 | } |
1442 | else |
2571 | else |
1443 | ev_timer_stop (EV_A_ w); |
2572 | ev_timer_stop (EV_A_ w); |
1444 | } |
2573 | } |
1445 | else if (w->repeat) |
2574 | else if (w->repeat) |
1446 | { |
2575 | { |
1447 | w->at = w->repeat; |
2576 | ev_at (w) = w->repeat; |
1448 | ev_timer_start (EV_A_ w); |
2577 | ev_timer_start (EV_A_ w); |
1449 | } |
2578 | } |
1450 | } |
|
|
1451 | |
2579 | |
|
|
2580 | EV_FREQUENT_CHECK; |
|
|
2581 | } |
|
|
2582 | |
|
|
2583 | ev_tstamp |
|
|
2584 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2585 | { |
|
|
2586 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2587 | } |
|
|
2588 | |
1452 | #if EV_PERIODICS |
2589 | #if EV_PERIODIC_ENABLE |
1453 | void |
2590 | void noinline |
1454 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2591 | ev_periodic_start (EV_P_ ev_periodic *w) |
1455 | { |
2592 | { |
1456 | if (expect_false (ev_is_active (w))) |
2593 | if (expect_false (ev_is_active (w))) |
1457 | return; |
2594 | return; |
1458 | |
2595 | |
1459 | if (w->reschedule_cb) |
2596 | if (w->reschedule_cb) |
1460 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2597 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1461 | else if (w->interval) |
2598 | else if (w->interval) |
1462 | { |
2599 | { |
1463 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2600 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1464 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2601 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1465 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2602 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1466 | } |
2603 | } |
|
|
2604 | else |
|
|
2605 | ev_at (w) = w->offset; |
1467 | |
2606 | |
|
|
2607 | EV_FREQUENT_CHECK; |
|
|
2608 | |
|
|
2609 | ++periodiccnt; |
1468 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2610 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1469 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
2611 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1470 | periodics [periodiccnt - 1] = w; |
2612 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1471 | upheap ((WT *)periodics, periodiccnt - 1); |
2613 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2614 | upheap (periodics, ev_active (w)); |
1472 | |
2615 | |
|
|
2616 | EV_FREQUENT_CHECK; |
|
|
2617 | |
1473 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2618 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1474 | } |
2619 | } |
1475 | |
2620 | |
1476 | void |
2621 | void noinline |
1477 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2622 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1478 | { |
2623 | { |
1479 | ev_clear_pending (EV_A_ (W)w); |
2624 | clear_pending (EV_A_ (W)w); |
1480 | if (expect_false (!ev_is_active (w))) |
2625 | if (expect_false (!ev_is_active (w))) |
1481 | return; |
2626 | return; |
1482 | |
2627 | |
|
|
2628 | EV_FREQUENT_CHECK; |
|
|
2629 | |
|
|
2630 | { |
|
|
2631 | int active = ev_active (w); |
|
|
2632 | |
1483 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2633 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1484 | |
2634 | |
|
|
2635 | --periodiccnt; |
|
|
2636 | |
1485 | if (expect_true (((W)w)->active < periodiccnt--)) |
2637 | if (expect_true (active < periodiccnt + HEAP0)) |
1486 | { |
2638 | { |
1487 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2639 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1488 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2640 | adjustheap (periodics, periodiccnt, active); |
1489 | } |
2641 | } |
|
|
2642 | } |
|
|
2643 | |
|
|
2644 | EV_FREQUENT_CHECK; |
1490 | |
2645 | |
1491 | ev_stop (EV_A_ (W)w); |
2646 | ev_stop (EV_A_ (W)w); |
1492 | } |
2647 | } |
1493 | |
2648 | |
1494 | void |
2649 | void noinline |
1495 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
2650 | ev_periodic_again (EV_P_ ev_periodic *w) |
1496 | { |
2651 | { |
1497 | /* TODO: use adjustheap and recalculation */ |
2652 | /* TODO: use adjustheap and recalculation */ |
1498 | ev_periodic_stop (EV_A_ w); |
2653 | ev_periodic_stop (EV_A_ w); |
1499 | ev_periodic_start (EV_A_ w); |
2654 | ev_periodic_start (EV_A_ w); |
1500 | } |
2655 | } |
1501 | #endif |
2656 | #endif |
1502 | |
2657 | |
1503 | void |
2658 | #ifndef SA_RESTART |
1504 | ev_idle_start (EV_P_ struct ev_idle *w) |
2659 | # define SA_RESTART 0 |
|
|
2660 | #endif |
|
|
2661 | |
|
|
2662 | void noinline |
|
|
2663 | ev_signal_start (EV_P_ ev_signal *w) |
1505 | { |
2664 | { |
1506 | if (expect_false (ev_is_active (w))) |
2665 | if (expect_false (ev_is_active (w))) |
1507 | return; |
2666 | return; |
1508 | |
2667 | |
|
|
2668 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
2669 | |
|
|
2670 | #if EV_MULTIPLICITY |
|
|
2671 | assert (("libev: tried to attach to a signal from two different loops", |
|
|
2672 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
2673 | |
|
|
2674 | signals [w->signum - 1].loop = EV_A; |
|
|
2675 | #endif |
|
|
2676 | |
|
|
2677 | EV_FREQUENT_CHECK; |
|
|
2678 | |
|
|
2679 | #if EV_USE_SIGNALFD |
|
|
2680 | if (sigfd == -2) |
|
|
2681 | { |
|
|
2682 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
2683 | if (sigfd < 0 && errno == EINVAL) |
|
|
2684 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
2685 | |
|
|
2686 | if (sigfd >= 0) |
|
|
2687 | { |
|
|
2688 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
2689 | |
|
|
2690 | sigemptyset (&sigfd_set); |
|
|
2691 | |
|
|
2692 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2693 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2694 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2695 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2696 | } |
|
|
2697 | } |
|
|
2698 | |
|
|
2699 | if (sigfd >= 0) |
|
|
2700 | { |
|
|
2701 | /* TODO: check .head */ |
|
|
2702 | sigaddset (&sigfd_set, w->signum); |
|
|
2703 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2704 | |
|
|
2705 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2706 | } |
|
|
2707 | #endif |
|
|
2708 | |
1509 | ev_start (EV_A_ (W)w, ++idlecnt); |
2709 | ev_start (EV_A_ (W)w, 1); |
1510 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
2710 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1511 | idles [idlecnt - 1] = w; |
|
|
1512 | } |
|
|
1513 | |
2711 | |
1514 | void |
2712 | if (!((WL)w)->next) |
1515 | ev_idle_stop (EV_P_ struct ev_idle *w) |
2713 | # if EV_USE_SIGNALFD |
|
|
2714 | if (sigfd < 0) /*TODO*/ |
|
|
2715 | # endif |
|
|
2716 | { |
|
|
2717 | # if _WIN32 |
|
|
2718 | signal (w->signum, ev_sighandler); |
|
|
2719 | # else |
|
|
2720 | struct sigaction sa; |
|
|
2721 | |
|
|
2722 | evpipe_init (EV_A); |
|
|
2723 | |
|
|
2724 | sa.sa_handler = ev_sighandler; |
|
|
2725 | sigfillset (&sa.sa_mask); |
|
|
2726 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2727 | sigaction (w->signum, &sa, 0); |
|
|
2728 | |
|
|
2729 | sigemptyset (&sa.sa_mask); |
|
|
2730 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2731 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2732 | #endif |
|
|
2733 | } |
|
|
2734 | |
|
|
2735 | EV_FREQUENT_CHECK; |
|
|
2736 | } |
|
|
2737 | |
|
|
2738 | void noinline |
|
|
2739 | ev_signal_stop (EV_P_ ev_signal *w) |
1516 | { |
2740 | { |
1517 | ev_clear_pending (EV_A_ (W)w); |
2741 | clear_pending (EV_A_ (W)w); |
1518 | if (expect_false (!ev_is_active (w))) |
2742 | if (expect_false (!ev_is_active (w))) |
1519 | return; |
2743 | return; |
1520 | |
2744 | |
1521 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
2745 | EV_FREQUENT_CHECK; |
|
|
2746 | |
|
|
2747 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1522 | ev_stop (EV_A_ (W)w); |
2748 | ev_stop (EV_A_ (W)w); |
1523 | } |
|
|
1524 | |
2749 | |
|
|
2750 | if (!signals [w->signum - 1].head) |
|
|
2751 | { |
|
|
2752 | #if EV_MULTIPLICITY |
|
|
2753 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2754 | #endif |
|
|
2755 | #if EV_USE_SIGNALFD |
|
|
2756 | if (sigfd >= 0) |
|
|
2757 | { |
|
|
2758 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
|
|
2759 | sigdelset (&sigfd_set, w->signum); |
|
|
2760 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2761 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
|
|
2762 | /*TODO: maybe unblock signal? */ |
|
|
2763 | } |
|
|
2764 | else |
|
|
2765 | #endif |
|
|
2766 | signal (w->signum, SIG_DFL); |
|
|
2767 | } |
|
|
2768 | |
|
|
2769 | EV_FREQUENT_CHECK; |
|
|
2770 | } |
|
|
2771 | |
1525 | void |
2772 | void |
1526 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
2773 | ev_child_start (EV_P_ ev_child *w) |
1527 | { |
2774 | { |
|
|
2775 | #if EV_MULTIPLICITY |
|
|
2776 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2777 | #endif |
1528 | if (expect_false (ev_is_active (w))) |
2778 | if (expect_false (ev_is_active (w))) |
1529 | return; |
2779 | return; |
1530 | |
2780 | |
|
|
2781 | EV_FREQUENT_CHECK; |
|
|
2782 | |
1531 | ev_start (EV_A_ (W)w, ++preparecnt); |
2783 | ev_start (EV_A_ (W)w, 1); |
1532 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
2784 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1533 | prepares [preparecnt - 1] = w; |
|
|
1534 | } |
|
|
1535 | |
2785 | |
|
|
2786 | EV_FREQUENT_CHECK; |
|
|
2787 | } |
|
|
2788 | |
1536 | void |
2789 | void |
1537 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
2790 | ev_child_stop (EV_P_ ev_child *w) |
1538 | { |
2791 | { |
1539 | ev_clear_pending (EV_A_ (W)w); |
2792 | clear_pending (EV_A_ (W)w); |
1540 | if (expect_false (!ev_is_active (w))) |
2793 | if (expect_false (!ev_is_active (w))) |
1541 | return; |
2794 | return; |
1542 | |
2795 | |
1543 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
2796 | EV_FREQUENT_CHECK; |
|
|
2797 | |
|
|
2798 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1544 | ev_stop (EV_A_ (W)w); |
2799 | ev_stop (EV_A_ (W)w); |
1545 | } |
|
|
1546 | |
2800 | |
|
|
2801 | EV_FREQUENT_CHECK; |
|
|
2802 | } |
|
|
2803 | |
|
|
2804 | #if EV_STAT_ENABLE |
|
|
2805 | |
|
|
2806 | # ifdef _WIN32 |
|
|
2807 | # undef lstat |
|
|
2808 | # define lstat(a,b) _stati64 (a,b) |
|
|
2809 | # endif |
|
|
2810 | |
|
|
2811 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2812 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2813 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2814 | |
|
|
2815 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2816 | |
|
|
2817 | #if EV_USE_INOTIFY |
|
|
2818 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2819 | |
|
|
2820 | static void noinline |
|
|
2821 | infy_add (EV_P_ ev_stat *w) |
|
|
2822 | { |
|
|
2823 | 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); |
|
|
2824 | |
|
|
2825 | if (w->wd < 0) |
|
|
2826 | { |
|
|
2827 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2828 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2829 | |
|
|
2830 | /* monitor some parent directory for speedup hints */ |
|
|
2831 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2832 | /* but an efficiency issue only */ |
|
|
2833 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2834 | { |
|
|
2835 | char path [4096]; |
|
|
2836 | strcpy (path, w->path); |
|
|
2837 | |
|
|
2838 | do |
|
|
2839 | { |
|
|
2840 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2841 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2842 | |
|
|
2843 | char *pend = strrchr (path, '/'); |
|
|
2844 | |
|
|
2845 | if (!pend || pend == path) |
|
|
2846 | break; |
|
|
2847 | |
|
|
2848 | *pend = 0; |
|
|
2849 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2850 | } |
|
|
2851 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2852 | } |
|
|
2853 | } |
|
|
2854 | |
|
|
2855 | if (w->wd >= 0) |
|
|
2856 | { |
|
|
2857 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2858 | |
|
|
2859 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2860 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2861 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2862 | struct statfs sfs; |
|
|
2863 | |
|
|
2864 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2865 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2866 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2867 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2868 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2869 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2870 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2871 | return; |
|
|
2872 | |
|
|
2873 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2874 | ev_timer_again (EV_A_ &w->timer); |
|
|
2875 | } |
|
|
2876 | } |
|
|
2877 | |
|
|
2878 | static void noinline |
|
|
2879 | infy_del (EV_P_ ev_stat *w) |
|
|
2880 | { |
|
|
2881 | int slot; |
|
|
2882 | int wd = w->wd; |
|
|
2883 | |
|
|
2884 | if (wd < 0) |
|
|
2885 | return; |
|
|
2886 | |
|
|
2887 | w->wd = -2; |
|
|
2888 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2889 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2890 | |
|
|
2891 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2892 | inotify_rm_watch (fs_fd, wd); |
|
|
2893 | } |
|
|
2894 | |
|
|
2895 | static void noinline |
|
|
2896 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2897 | { |
|
|
2898 | if (slot < 0) |
|
|
2899 | /* overflow, need to check for all hash slots */ |
|
|
2900 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2901 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2902 | else |
|
|
2903 | { |
|
|
2904 | WL w_; |
|
|
2905 | |
|
|
2906 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2907 | { |
|
|
2908 | ev_stat *w = (ev_stat *)w_; |
|
|
2909 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2910 | |
|
|
2911 | if (w->wd == wd || wd == -1) |
|
|
2912 | { |
|
|
2913 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2914 | { |
|
|
2915 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2916 | w->wd = -1; |
|
|
2917 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2918 | } |
|
|
2919 | |
|
|
2920 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2921 | } |
|
|
2922 | } |
|
|
2923 | } |
|
|
2924 | } |
|
|
2925 | |
|
|
2926 | static void |
|
|
2927 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2928 | { |
|
|
2929 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2930 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2931 | int ofs; |
|
|
2932 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2933 | |
|
|
2934 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2935 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2936 | } |
|
|
2937 | |
|
|
2938 | inline_size void |
|
|
2939 | check_2625 (EV_P) |
|
|
2940 | { |
|
|
2941 | /* kernels < 2.6.25 are borked |
|
|
2942 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2943 | */ |
|
|
2944 | struct utsname buf; |
|
|
2945 | int major, minor, micro; |
|
|
2946 | |
|
|
2947 | if (uname (&buf)) |
|
|
2948 | return; |
|
|
2949 | |
|
|
2950 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2951 | return; |
|
|
2952 | |
|
|
2953 | if (major < 2 |
|
|
2954 | || (major == 2 && minor < 6) |
|
|
2955 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2956 | return; |
|
|
2957 | |
|
|
2958 | fs_2625 = 1; |
|
|
2959 | } |
|
|
2960 | |
|
|
2961 | inline_size void |
|
|
2962 | infy_init (EV_P) |
|
|
2963 | { |
|
|
2964 | if (fs_fd != -2) |
|
|
2965 | return; |
|
|
2966 | |
|
|
2967 | fs_fd = -1; |
|
|
2968 | |
|
|
2969 | check_2625 (EV_A); |
|
|
2970 | |
|
|
2971 | fs_fd = inotify_init (); |
|
|
2972 | |
|
|
2973 | if (fs_fd >= 0) |
|
|
2974 | { |
|
|
2975 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2976 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2977 | ev_io_start (EV_A_ &fs_w); |
|
|
2978 | } |
|
|
2979 | } |
|
|
2980 | |
|
|
2981 | inline_size void |
|
|
2982 | infy_fork (EV_P) |
|
|
2983 | { |
|
|
2984 | int slot; |
|
|
2985 | |
|
|
2986 | if (fs_fd < 0) |
|
|
2987 | return; |
|
|
2988 | |
|
|
2989 | close (fs_fd); |
|
|
2990 | fs_fd = inotify_init (); |
|
|
2991 | |
|
|
2992 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2993 | { |
|
|
2994 | WL w_ = fs_hash [slot].head; |
|
|
2995 | fs_hash [slot].head = 0; |
|
|
2996 | |
|
|
2997 | while (w_) |
|
|
2998 | { |
|
|
2999 | ev_stat *w = (ev_stat *)w_; |
|
|
3000 | w_ = w_->next; /* lets us add this watcher */ |
|
|
3001 | |
|
|
3002 | w->wd = -1; |
|
|
3003 | |
|
|
3004 | if (fs_fd >= 0) |
|
|
3005 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3006 | else |
|
|
3007 | ev_timer_again (EV_A_ &w->timer); |
|
|
3008 | } |
|
|
3009 | } |
|
|
3010 | } |
|
|
3011 | |
|
|
3012 | #endif |
|
|
3013 | |
|
|
3014 | #ifdef _WIN32 |
|
|
3015 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
3016 | #else |
|
|
3017 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
3018 | #endif |
|
|
3019 | |
1547 | void |
3020 | void |
1548 | ev_check_start (EV_P_ struct ev_check *w) |
3021 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
3022 | { |
|
|
3023 | if (lstat (w->path, &w->attr) < 0) |
|
|
3024 | w->attr.st_nlink = 0; |
|
|
3025 | else if (!w->attr.st_nlink) |
|
|
3026 | w->attr.st_nlink = 1; |
|
|
3027 | } |
|
|
3028 | |
|
|
3029 | static void noinline |
|
|
3030 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3031 | { |
|
|
3032 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3033 | |
|
|
3034 | /* we copy this here each the time so that */ |
|
|
3035 | /* prev has the old value when the callback gets invoked */ |
|
|
3036 | w->prev = w->attr; |
|
|
3037 | ev_stat_stat (EV_A_ w); |
|
|
3038 | |
|
|
3039 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3040 | if ( |
|
|
3041 | w->prev.st_dev != w->attr.st_dev |
|
|
3042 | || w->prev.st_ino != w->attr.st_ino |
|
|
3043 | || w->prev.st_mode != w->attr.st_mode |
|
|
3044 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
3045 | || w->prev.st_uid != w->attr.st_uid |
|
|
3046 | || w->prev.st_gid != w->attr.st_gid |
|
|
3047 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
3048 | || w->prev.st_size != w->attr.st_size |
|
|
3049 | || w->prev.st_atime != w->attr.st_atime |
|
|
3050 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
3051 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
3052 | ) { |
|
|
3053 | #if EV_USE_INOTIFY |
|
|
3054 | if (fs_fd >= 0) |
|
|
3055 | { |
|
|
3056 | infy_del (EV_A_ w); |
|
|
3057 | infy_add (EV_A_ w); |
|
|
3058 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3059 | } |
|
|
3060 | #endif |
|
|
3061 | |
|
|
3062 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3063 | } |
|
|
3064 | } |
|
|
3065 | |
|
|
3066 | void |
|
|
3067 | ev_stat_start (EV_P_ ev_stat *w) |
1549 | { |
3068 | { |
1550 | if (expect_false (ev_is_active (w))) |
3069 | if (expect_false (ev_is_active (w))) |
1551 | return; |
3070 | return; |
1552 | |
3071 | |
|
|
3072 | ev_stat_stat (EV_A_ w); |
|
|
3073 | |
|
|
3074 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3075 | w->interval = MIN_STAT_INTERVAL; |
|
|
3076 | |
|
|
3077 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3078 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3079 | |
|
|
3080 | #if EV_USE_INOTIFY |
|
|
3081 | infy_init (EV_A); |
|
|
3082 | |
|
|
3083 | if (fs_fd >= 0) |
|
|
3084 | infy_add (EV_A_ w); |
|
|
3085 | else |
|
|
3086 | #endif |
|
|
3087 | ev_timer_again (EV_A_ &w->timer); |
|
|
3088 | |
1553 | ev_start (EV_A_ (W)w, ++checkcnt); |
3089 | ev_start (EV_A_ (W)w, 1); |
1554 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1555 | checks [checkcnt - 1] = w; |
|
|
1556 | } |
|
|
1557 | |
3090 | |
|
|
3091 | EV_FREQUENT_CHECK; |
|
|
3092 | } |
|
|
3093 | |
1558 | void |
3094 | void |
1559 | ev_check_stop (EV_P_ struct ev_check *w) |
3095 | ev_stat_stop (EV_P_ ev_stat *w) |
1560 | { |
3096 | { |
1561 | ev_clear_pending (EV_A_ (W)w); |
3097 | clear_pending (EV_A_ (W)w); |
1562 | if (expect_false (!ev_is_active (w))) |
3098 | if (expect_false (!ev_is_active (w))) |
1563 | return; |
3099 | return; |
1564 | |
3100 | |
1565 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
3101 | EV_FREQUENT_CHECK; |
|
|
3102 | |
|
|
3103 | #if EV_USE_INOTIFY |
|
|
3104 | infy_del (EV_A_ w); |
|
|
3105 | #endif |
|
|
3106 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3107 | |
1566 | ev_stop (EV_A_ (W)w); |
3108 | ev_stop (EV_A_ (W)w); |
1567 | } |
|
|
1568 | |
3109 | |
1569 | #ifndef SA_RESTART |
3110 | EV_FREQUENT_CHECK; |
1570 | # define SA_RESTART 0 |
3111 | } |
1571 | #endif |
3112 | #endif |
1572 | |
3113 | |
|
|
3114 | #if EV_IDLE_ENABLE |
1573 | void |
3115 | void |
1574 | ev_signal_start (EV_P_ struct ev_signal *w) |
3116 | ev_idle_start (EV_P_ ev_idle *w) |
1575 | { |
3117 | { |
1576 | #if EV_MULTIPLICITY |
|
|
1577 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1578 | #endif |
|
|
1579 | if (expect_false (ev_is_active (w))) |
3118 | if (expect_false (ev_is_active (w))) |
1580 | return; |
3119 | return; |
1581 | |
3120 | |
1582 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
3121 | pri_adjust (EV_A_ (W)w); |
1583 | |
3122 | |
|
|
3123 | EV_FREQUENT_CHECK; |
|
|
3124 | |
|
|
3125 | { |
|
|
3126 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3127 | |
|
|
3128 | ++idleall; |
1584 | ev_start (EV_A_ (W)w, 1); |
3129 | ev_start (EV_A_ (W)w, active); |
1585 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1586 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1587 | |
3130 | |
1588 | if (!((WL)w)->next) |
3131 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
1589 | { |
3132 | idles [ABSPRI (w)][active - 1] = w; |
1590 | #if _WIN32 |
|
|
1591 | signal (w->signum, sighandler); |
|
|
1592 | #else |
|
|
1593 | struct sigaction sa; |
|
|
1594 | sa.sa_handler = sighandler; |
|
|
1595 | sigfillset (&sa.sa_mask); |
|
|
1596 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1597 | sigaction (w->signum, &sa, 0); |
|
|
1598 | #endif |
|
|
1599 | } |
3133 | } |
1600 | } |
|
|
1601 | |
3134 | |
|
|
3135 | EV_FREQUENT_CHECK; |
|
|
3136 | } |
|
|
3137 | |
1602 | void |
3138 | void |
1603 | ev_signal_stop (EV_P_ struct ev_signal *w) |
3139 | ev_idle_stop (EV_P_ ev_idle *w) |
1604 | { |
3140 | { |
1605 | ev_clear_pending (EV_A_ (W)w); |
3141 | clear_pending (EV_A_ (W)w); |
1606 | if (expect_false (!ev_is_active (w))) |
3142 | if (expect_false (!ev_is_active (w))) |
1607 | return; |
3143 | return; |
1608 | |
3144 | |
1609 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
3145 | EV_FREQUENT_CHECK; |
|
|
3146 | |
|
|
3147 | { |
|
|
3148 | int active = ev_active (w); |
|
|
3149 | |
|
|
3150 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3151 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3152 | |
1610 | ev_stop (EV_A_ (W)w); |
3153 | ev_stop (EV_A_ (W)w); |
|
|
3154 | --idleall; |
|
|
3155 | } |
1611 | |
3156 | |
1612 | if (!signals [w->signum - 1].head) |
3157 | EV_FREQUENT_CHECK; |
1613 | signal (w->signum, SIG_DFL); |
|
|
1614 | } |
3158 | } |
1615 | |
|
|
1616 | void |
|
|
1617 | ev_child_start (EV_P_ struct ev_child *w) |
|
|
1618 | { |
|
|
1619 | #if EV_MULTIPLICITY |
|
|
1620 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1621 | #endif |
3159 | #endif |
|
|
3160 | |
|
|
3161 | void |
|
|
3162 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3163 | { |
1622 | if (expect_false (ev_is_active (w))) |
3164 | if (expect_false (ev_is_active (w))) |
1623 | return; |
3165 | return; |
1624 | |
3166 | |
|
|
3167 | EV_FREQUENT_CHECK; |
|
|
3168 | |
1625 | ev_start (EV_A_ (W)w, 1); |
3169 | ev_start (EV_A_ (W)w, ++preparecnt); |
1626 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3170 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
1627 | } |
3171 | prepares [preparecnt - 1] = w; |
1628 | |
3172 | |
|
|
3173 | EV_FREQUENT_CHECK; |
|
|
3174 | } |
|
|
3175 | |
1629 | void |
3176 | void |
1630 | ev_child_stop (EV_P_ struct ev_child *w) |
3177 | ev_prepare_stop (EV_P_ ev_prepare *w) |
1631 | { |
3178 | { |
1632 | ev_clear_pending (EV_A_ (W)w); |
3179 | clear_pending (EV_A_ (W)w); |
1633 | if (expect_false (!ev_is_active (w))) |
3180 | if (expect_false (!ev_is_active (w))) |
1634 | return; |
3181 | return; |
1635 | |
3182 | |
1636 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3183 | EV_FREQUENT_CHECK; |
|
|
3184 | |
|
|
3185 | { |
|
|
3186 | int active = ev_active (w); |
|
|
3187 | |
|
|
3188 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3189 | ev_active (prepares [active - 1]) = active; |
|
|
3190 | } |
|
|
3191 | |
1637 | ev_stop (EV_A_ (W)w); |
3192 | ev_stop (EV_A_ (W)w); |
|
|
3193 | |
|
|
3194 | EV_FREQUENT_CHECK; |
1638 | } |
3195 | } |
|
|
3196 | |
|
|
3197 | void |
|
|
3198 | ev_check_start (EV_P_ ev_check *w) |
|
|
3199 | { |
|
|
3200 | if (expect_false (ev_is_active (w))) |
|
|
3201 | return; |
|
|
3202 | |
|
|
3203 | EV_FREQUENT_CHECK; |
|
|
3204 | |
|
|
3205 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
3206 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
3207 | checks [checkcnt - 1] = w; |
|
|
3208 | |
|
|
3209 | EV_FREQUENT_CHECK; |
|
|
3210 | } |
|
|
3211 | |
|
|
3212 | void |
|
|
3213 | ev_check_stop (EV_P_ ev_check *w) |
|
|
3214 | { |
|
|
3215 | clear_pending (EV_A_ (W)w); |
|
|
3216 | if (expect_false (!ev_is_active (w))) |
|
|
3217 | return; |
|
|
3218 | |
|
|
3219 | EV_FREQUENT_CHECK; |
|
|
3220 | |
|
|
3221 | { |
|
|
3222 | int active = ev_active (w); |
|
|
3223 | |
|
|
3224 | checks [active - 1] = checks [--checkcnt]; |
|
|
3225 | ev_active (checks [active - 1]) = active; |
|
|
3226 | } |
|
|
3227 | |
|
|
3228 | ev_stop (EV_A_ (W)w); |
|
|
3229 | |
|
|
3230 | EV_FREQUENT_CHECK; |
|
|
3231 | } |
|
|
3232 | |
|
|
3233 | #if EV_EMBED_ENABLE |
|
|
3234 | void noinline |
|
|
3235 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
3236 | { |
|
|
3237 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3238 | } |
|
|
3239 | |
|
|
3240 | static void |
|
|
3241 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3242 | { |
|
|
3243 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3244 | |
|
|
3245 | if (ev_cb (w)) |
|
|
3246 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3247 | else |
|
|
3248 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3249 | } |
|
|
3250 | |
|
|
3251 | static void |
|
|
3252 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3253 | { |
|
|
3254 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3255 | |
|
|
3256 | { |
|
|
3257 | EV_P = w->other; |
|
|
3258 | |
|
|
3259 | while (fdchangecnt) |
|
|
3260 | { |
|
|
3261 | fd_reify (EV_A); |
|
|
3262 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3263 | } |
|
|
3264 | } |
|
|
3265 | } |
|
|
3266 | |
|
|
3267 | static void |
|
|
3268 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3269 | { |
|
|
3270 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3271 | |
|
|
3272 | ev_embed_stop (EV_A_ w); |
|
|
3273 | |
|
|
3274 | { |
|
|
3275 | EV_P = w->other; |
|
|
3276 | |
|
|
3277 | ev_loop_fork (EV_A); |
|
|
3278 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3279 | } |
|
|
3280 | |
|
|
3281 | ev_embed_start (EV_A_ w); |
|
|
3282 | } |
|
|
3283 | |
|
|
3284 | #if 0 |
|
|
3285 | static void |
|
|
3286 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3287 | { |
|
|
3288 | ev_idle_stop (EV_A_ idle); |
|
|
3289 | } |
|
|
3290 | #endif |
|
|
3291 | |
|
|
3292 | void |
|
|
3293 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3294 | { |
|
|
3295 | if (expect_false (ev_is_active (w))) |
|
|
3296 | return; |
|
|
3297 | |
|
|
3298 | { |
|
|
3299 | EV_P = w->other; |
|
|
3300 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3301 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3302 | } |
|
|
3303 | |
|
|
3304 | EV_FREQUENT_CHECK; |
|
|
3305 | |
|
|
3306 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3307 | ev_io_start (EV_A_ &w->io); |
|
|
3308 | |
|
|
3309 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3310 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3311 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3312 | |
|
|
3313 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3314 | ev_fork_start (EV_A_ &w->fork); |
|
|
3315 | |
|
|
3316 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3317 | |
|
|
3318 | ev_start (EV_A_ (W)w, 1); |
|
|
3319 | |
|
|
3320 | EV_FREQUENT_CHECK; |
|
|
3321 | } |
|
|
3322 | |
|
|
3323 | void |
|
|
3324 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
3325 | { |
|
|
3326 | clear_pending (EV_A_ (W)w); |
|
|
3327 | if (expect_false (!ev_is_active (w))) |
|
|
3328 | return; |
|
|
3329 | |
|
|
3330 | EV_FREQUENT_CHECK; |
|
|
3331 | |
|
|
3332 | ev_io_stop (EV_A_ &w->io); |
|
|
3333 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3334 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3335 | |
|
|
3336 | EV_FREQUENT_CHECK; |
|
|
3337 | } |
|
|
3338 | #endif |
|
|
3339 | |
|
|
3340 | #if EV_FORK_ENABLE |
|
|
3341 | void |
|
|
3342 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3343 | { |
|
|
3344 | if (expect_false (ev_is_active (w))) |
|
|
3345 | return; |
|
|
3346 | |
|
|
3347 | EV_FREQUENT_CHECK; |
|
|
3348 | |
|
|
3349 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3350 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3351 | forks [forkcnt - 1] = w; |
|
|
3352 | |
|
|
3353 | EV_FREQUENT_CHECK; |
|
|
3354 | } |
|
|
3355 | |
|
|
3356 | void |
|
|
3357 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3358 | { |
|
|
3359 | clear_pending (EV_A_ (W)w); |
|
|
3360 | if (expect_false (!ev_is_active (w))) |
|
|
3361 | return; |
|
|
3362 | |
|
|
3363 | EV_FREQUENT_CHECK; |
|
|
3364 | |
|
|
3365 | { |
|
|
3366 | int active = ev_active (w); |
|
|
3367 | |
|
|
3368 | forks [active - 1] = forks [--forkcnt]; |
|
|
3369 | ev_active (forks [active - 1]) = active; |
|
|
3370 | } |
|
|
3371 | |
|
|
3372 | ev_stop (EV_A_ (W)w); |
|
|
3373 | |
|
|
3374 | EV_FREQUENT_CHECK; |
|
|
3375 | } |
|
|
3376 | #endif |
|
|
3377 | |
|
|
3378 | #if EV_ASYNC_ENABLE |
|
|
3379 | void |
|
|
3380 | ev_async_start (EV_P_ ev_async *w) |
|
|
3381 | { |
|
|
3382 | if (expect_false (ev_is_active (w))) |
|
|
3383 | return; |
|
|
3384 | |
|
|
3385 | evpipe_init (EV_A); |
|
|
3386 | |
|
|
3387 | EV_FREQUENT_CHECK; |
|
|
3388 | |
|
|
3389 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3390 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3391 | asyncs [asynccnt - 1] = w; |
|
|
3392 | |
|
|
3393 | EV_FREQUENT_CHECK; |
|
|
3394 | } |
|
|
3395 | |
|
|
3396 | void |
|
|
3397 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3398 | { |
|
|
3399 | clear_pending (EV_A_ (W)w); |
|
|
3400 | if (expect_false (!ev_is_active (w))) |
|
|
3401 | return; |
|
|
3402 | |
|
|
3403 | EV_FREQUENT_CHECK; |
|
|
3404 | |
|
|
3405 | { |
|
|
3406 | int active = ev_active (w); |
|
|
3407 | |
|
|
3408 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3409 | ev_active (asyncs [active - 1]) = active; |
|
|
3410 | } |
|
|
3411 | |
|
|
3412 | ev_stop (EV_A_ (W)w); |
|
|
3413 | |
|
|
3414 | EV_FREQUENT_CHECK; |
|
|
3415 | } |
|
|
3416 | |
|
|
3417 | void |
|
|
3418 | ev_async_send (EV_P_ ev_async *w) |
|
|
3419 | { |
|
|
3420 | w->sent = 1; |
|
|
3421 | evpipe_write (EV_A_ &gotasync); |
|
|
3422 | } |
|
|
3423 | #endif |
1639 | |
3424 | |
1640 | /*****************************************************************************/ |
3425 | /*****************************************************************************/ |
1641 | |
3426 | |
1642 | struct ev_once |
3427 | struct ev_once |
1643 | { |
3428 | { |
1644 | struct ev_io io; |
3429 | ev_io io; |
1645 | struct ev_timer to; |
3430 | ev_timer to; |
1646 | void (*cb)(int revents, void *arg); |
3431 | void (*cb)(int revents, void *arg); |
1647 | void *arg; |
3432 | void *arg; |
1648 | }; |
3433 | }; |
1649 | |
3434 | |
1650 | static void |
3435 | static void |
1651 | once_cb (EV_P_ struct ev_once *once, int revents) |
3436 | once_cb (EV_P_ struct ev_once *once, int revents) |
1652 | { |
3437 | { |
1653 | void (*cb)(int revents, void *arg) = once->cb; |
3438 | void (*cb)(int revents, void *arg) = once->cb; |
1654 | void *arg = once->arg; |
3439 | void *arg = once->arg; |
1655 | |
3440 | |
1656 | ev_io_stop (EV_A_ &once->io); |
3441 | ev_io_stop (EV_A_ &once->io); |
1657 | ev_timer_stop (EV_A_ &once->to); |
3442 | ev_timer_stop (EV_A_ &once->to); |
1658 | ev_free (once); |
3443 | ev_free (once); |
1659 | |
3444 | |
1660 | cb (revents, arg); |
3445 | cb (revents, arg); |
1661 | } |
3446 | } |
1662 | |
3447 | |
1663 | static void |
3448 | static void |
1664 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
3449 | once_cb_io (EV_P_ ev_io *w, int revents) |
1665 | { |
3450 | { |
1666 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3451 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3452 | |
|
|
3453 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1667 | } |
3454 | } |
1668 | |
3455 | |
1669 | static void |
3456 | static void |
1670 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
3457 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1671 | { |
3458 | { |
1672 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3459 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
3460 | |
|
|
3461 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1673 | } |
3462 | } |
1674 | |
3463 | |
1675 | void |
3464 | void |
1676 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3465 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1677 | { |
3466 | { |
… | |
… | |
1699 | ev_timer_set (&once->to, timeout, 0.); |
3488 | ev_timer_set (&once->to, timeout, 0.); |
1700 | ev_timer_start (EV_A_ &once->to); |
3489 | ev_timer_start (EV_A_ &once->to); |
1701 | } |
3490 | } |
1702 | } |
3491 | } |
1703 | |
3492 | |
|
|
3493 | /*****************************************************************************/ |
|
|
3494 | |
|
|
3495 | #if EV_WALK_ENABLE |
|
|
3496 | void |
|
|
3497 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3498 | { |
|
|
3499 | int i, j; |
|
|
3500 | ev_watcher_list *wl, *wn; |
|
|
3501 | |
|
|
3502 | if (types & (EV_IO | EV_EMBED)) |
|
|
3503 | for (i = 0; i < anfdmax; ++i) |
|
|
3504 | for (wl = anfds [i].head; wl; ) |
|
|
3505 | { |
|
|
3506 | wn = wl->next; |
|
|
3507 | |
|
|
3508 | #if EV_EMBED_ENABLE |
|
|
3509 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3510 | { |
|
|
3511 | if (types & EV_EMBED) |
|
|
3512 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3513 | } |
|
|
3514 | else |
|
|
3515 | #endif |
|
|
3516 | #if EV_USE_INOTIFY |
|
|
3517 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3518 | ; |
|
|
3519 | else |
|
|
3520 | #endif |
|
|
3521 | if ((ev_io *)wl != &pipe_w) |
|
|
3522 | if (types & EV_IO) |
|
|
3523 | cb (EV_A_ EV_IO, wl); |
|
|
3524 | |
|
|
3525 | wl = wn; |
|
|
3526 | } |
|
|
3527 | |
|
|
3528 | if (types & (EV_TIMER | EV_STAT)) |
|
|
3529 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3530 | #if EV_STAT_ENABLE |
|
|
3531 | /*TODO: timer is not always active*/ |
|
|
3532 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
|
|
3533 | { |
|
|
3534 | if (types & EV_STAT) |
|
|
3535 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
|
|
3536 | } |
|
|
3537 | else |
|
|
3538 | #endif |
|
|
3539 | if (types & EV_TIMER) |
|
|
3540 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
|
|
3541 | |
|
|
3542 | #if EV_PERIODIC_ENABLE |
|
|
3543 | if (types & EV_PERIODIC) |
|
|
3544 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3545 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3546 | #endif |
|
|
3547 | |
|
|
3548 | #if EV_IDLE_ENABLE |
|
|
3549 | if (types & EV_IDLE) |
|
|
3550 | for (j = NUMPRI; i--; ) |
|
|
3551 | for (i = idlecnt [j]; i--; ) |
|
|
3552 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3553 | #endif |
|
|
3554 | |
|
|
3555 | #if EV_FORK_ENABLE |
|
|
3556 | if (types & EV_FORK) |
|
|
3557 | for (i = forkcnt; i--; ) |
|
|
3558 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3559 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3560 | #endif |
|
|
3561 | |
|
|
3562 | #if EV_ASYNC_ENABLE |
|
|
3563 | if (types & EV_ASYNC) |
|
|
3564 | for (i = asynccnt; i--; ) |
|
|
3565 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
3566 | #endif |
|
|
3567 | |
|
|
3568 | if (types & EV_PREPARE) |
|
|
3569 | for (i = preparecnt; i--; ) |
|
|
3570 | #if EV_EMBED_ENABLE |
|
|
3571 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
3572 | #endif |
|
|
3573 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
3574 | |
|
|
3575 | if (types & EV_CHECK) |
|
|
3576 | for (i = checkcnt; i--; ) |
|
|
3577 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
3578 | |
|
|
3579 | if (types & EV_SIGNAL) |
|
|
3580 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
3581 | for (wl = signals [i].head; wl; ) |
|
|
3582 | { |
|
|
3583 | wn = wl->next; |
|
|
3584 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
3585 | wl = wn; |
|
|
3586 | } |
|
|
3587 | |
|
|
3588 | if (types & EV_CHILD) |
|
|
3589 | for (i = EV_PID_HASHSIZE; i--; ) |
|
|
3590 | for (wl = childs [i]; wl; ) |
|
|
3591 | { |
|
|
3592 | wn = wl->next; |
|
|
3593 | cb (EV_A_ EV_CHILD, wl); |
|
|
3594 | wl = wn; |
|
|
3595 | } |
|
|
3596 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
3597 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
3598 | } |
|
|
3599 | #endif |
|
|
3600 | |
|
|
3601 | #if EV_MULTIPLICITY |
|
|
3602 | #include "ev_wrap.h" |
|
|
3603 | #endif |
|
|
3604 | |
1704 | #ifdef __cplusplus |
3605 | #ifdef __cplusplus |
1705 | } |
3606 | } |
1706 | #endif |
3607 | #endif |
1707 | |
3608 | |