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 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 |
38 | |
51 | |
39 | # if HAVE_CLOCK_GETTIME |
52 | # if HAVE_CLOCK_GETTIME |
40 | # ifndef EV_USE_MONOTONIC |
53 | # ifndef EV_USE_MONOTONIC |
41 | # define EV_USE_MONOTONIC 1 |
54 | # define EV_USE_MONOTONIC 1 |
42 | # endif |
55 | # endif |
… | |
… | |
47 | # ifndef EV_USE_MONOTONIC |
60 | # ifndef EV_USE_MONOTONIC |
48 | # define EV_USE_MONOTONIC 0 |
61 | # define EV_USE_MONOTONIC 0 |
49 | # endif |
62 | # endif |
50 | # ifndef EV_USE_REALTIME |
63 | # ifndef EV_USE_REALTIME |
51 | # define EV_USE_REALTIME 0 |
64 | # define EV_USE_REALTIME 0 |
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65 | # endif |
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66 | # endif |
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67 | |
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68 | # ifndef EV_USE_NANOSLEEP |
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69 | # if HAVE_NANOSLEEP |
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70 | # define EV_USE_NANOSLEEP 1 |
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71 | # else |
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72 | # define EV_USE_NANOSLEEP 0 |
52 | # endif |
73 | # endif |
53 | # endif |
74 | # endif |
54 | |
75 | |
55 | # ifndef EV_USE_SELECT |
76 | # ifndef EV_USE_SELECT |
56 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
77 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
… | |
… | |
90 | # else |
111 | # else |
91 | # define EV_USE_PORT 0 |
112 | # define EV_USE_PORT 0 |
92 | # endif |
113 | # endif |
93 | # endif |
114 | # endif |
94 | |
115 | |
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116 | # ifndef EV_USE_INOTIFY |
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117 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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118 | # define EV_USE_INOTIFY 1 |
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119 | # else |
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120 | # define EV_USE_INOTIFY 0 |
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121 | # endif |
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122 | # endif |
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123 | |
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124 | # ifndef EV_USE_EVENTFD |
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125 | # if HAVE_EVENTFD |
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126 | # define EV_USE_EVENTFD 1 |
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127 | # else |
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128 | # define EV_USE_EVENTFD 0 |
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129 | # endif |
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130 | # endif |
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131 | |
95 | #endif |
132 | #endif |
96 | |
133 | |
97 | #include <math.h> |
134 | #include <math.h> |
98 | #include <stdlib.h> |
135 | #include <stdlib.h> |
99 | #include <fcntl.h> |
136 | #include <fcntl.h> |
… | |
… | |
106 | #include <sys/types.h> |
143 | #include <sys/types.h> |
107 | #include <time.h> |
144 | #include <time.h> |
108 | |
145 | |
109 | #include <signal.h> |
146 | #include <signal.h> |
110 | |
147 | |
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148 | #ifdef EV_H |
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149 | # include EV_H |
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150 | #else |
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151 | # include "ev.h" |
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152 | #endif |
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153 | |
111 | #ifndef _WIN32 |
154 | #ifndef _WIN32 |
112 | # include <unistd.h> |
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113 | # include <sys/time.h> |
155 | # include <sys/time.h> |
114 | # include <sys/wait.h> |
156 | # include <sys/wait.h> |
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157 | # include <unistd.h> |
115 | #else |
158 | #else |
116 | # define WIN32_LEAN_AND_MEAN |
159 | # define WIN32_LEAN_AND_MEAN |
117 | # include <windows.h> |
160 | # include <windows.h> |
118 | # ifndef EV_SELECT_IS_WINSOCKET |
161 | # ifndef EV_SELECT_IS_WINSOCKET |
119 | # define EV_SELECT_IS_WINSOCKET 1 |
162 | # define EV_SELECT_IS_WINSOCKET 1 |
120 | # endif |
163 | # endif |
121 | #endif |
164 | #endif |
122 | |
165 | |
123 | /**/ |
166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
124 | |
167 | |
125 | #ifndef EV_USE_MONOTONIC |
168 | #ifndef EV_USE_MONOTONIC |
126 | # define EV_USE_MONOTONIC 0 |
169 | # define EV_USE_MONOTONIC 0 |
127 | #endif |
170 | #endif |
128 | |
171 | |
129 | #ifndef EV_USE_REALTIME |
172 | #ifndef EV_USE_REALTIME |
130 | # define EV_USE_REALTIME 0 |
173 | # define EV_USE_REALTIME 0 |
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174 | #endif |
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175 | |
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176 | #ifndef EV_USE_NANOSLEEP |
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177 | # define EV_USE_NANOSLEEP 0 |
131 | #endif |
178 | #endif |
132 | |
179 | |
133 | #ifndef EV_USE_SELECT |
180 | #ifndef EV_USE_SELECT |
134 | # define EV_USE_SELECT 1 |
181 | # define EV_USE_SELECT 1 |
135 | #endif |
182 | #endif |
… | |
… | |
141 | # define EV_USE_POLL 1 |
188 | # define EV_USE_POLL 1 |
142 | # endif |
189 | # endif |
143 | #endif |
190 | #endif |
144 | |
191 | |
145 | #ifndef EV_USE_EPOLL |
192 | #ifndef EV_USE_EPOLL |
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193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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194 | # define EV_USE_EPOLL 1 |
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195 | # else |
146 | # define EV_USE_EPOLL 0 |
196 | # define EV_USE_EPOLL 0 |
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197 | # endif |
147 | #endif |
198 | #endif |
148 | |
199 | |
149 | #ifndef EV_USE_KQUEUE |
200 | #ifndef EV_USE_KQUEUE |
150 | # define EV_USE_KQUEUE 0 |
201 | # define EV_USE_KQUEUE 0 |
151 | #endif |
202 | #endif |
152 | |
203 | |
153 | #ifndef EV_USE_PORT |
204 | #ifndef EV_USE_PORT |
154 | # define EV_USE_PORT 0 |
205 | # define EV_USE_PORT 0 |
155 | #endif |
206 | #endif |
156 | |
207 | |
157 | /**/ |
208 | #ifndef EV_USE_INOTIFY |
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209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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210 | # define EV_USE_INOTIFY 1 |
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211 | # else |
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212 | # define EV_USE_INOTIFY 0 |
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213 | # endif |
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214 | #endif |
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215 | |
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216 | #ifndef EV_PID_HASHSIZE |
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217 | # if EV_MINIMAL |
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218 | # define EV_PID_HASHSIZE 1 |
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219 | # else |
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220 | # define EV_PID_HASHSIZE 16 |
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221 | # endif |
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222 | #endif |
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223 | |
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224 | #ifndef EV_INOTIFY_HASHSIZE |
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225 | # if EV_MINIMAL |
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226 | # define EV_INOTIFY_HASHSIZE 1 |
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227 | # else |
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228 | # define EV_INOTIFY_HASHSIZE 16 |
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229 | # endif |
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230 | #endif |
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231 | |
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232 | #ifndef EV_USE_EVENTFD |
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233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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234 | # define EV_USE_EVENTFD 1 |
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235 | # else |
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236 | # define EV_USE_EVENTFD 0 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
158 | |
241 | |
159 | #ifndef CLOCK_MONOTONIC |
242 | #ifndef CLOCK_MONOTONIC |
160 | # undef EV_USE_MONOTONIC |
243 | # undef EV_USE_MONOTONIC |
161 | # define EV_USE_MONOTONIC 0 |
244 | # define EV_USE_MONOTONIC 0 |
162 | #endif |
245 | #endif |
… | |
… | |
164 | #ifndef CLOCK_REALTIME |
247 | #ifndef CLOCK_REALTIME |
165 | # undef EV_USE_REALTIME |
248 | # undef EV_USE_REALTIME |
166 | # define EV_USE_REALTIME 0 |
249 | # define EV_USE_REALTIME 0 |
167 | #endif |
250 | #endif |
168 | |
251 | |
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252 | #if !EV_STAT_ENABLE |
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253 | # undef EV_USE_INOTIFY |
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254 | # define EV_USE_INOTIFY 0 |
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255 | #endif |
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256 | |
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257 | #if !EV_USE_NANOSLEEP |
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258 | # ifndef _WIN32 |
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259 | # include <sys/select.h> |
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260 | # endif |
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261 | #endif |
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262 | |
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263 | #if EV_USE_INOTIFY |
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264 | # include <sys/inotify.h> |
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265 | #endif |
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266 | |
169 | #if EV_SELECT_IS_WINSOCKET |
267 | #if EV_SELECT_IS_WINSOCKET |
170 | # include <winsock.h> |
268 | # include <winsock.h> |
171 | #endif |
269 | #endif |
172 | |
270 | |
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271 | #if EV_USE_EVENTFD |
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272 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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273 | # include <stdint.h> |
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274 | # ifdef __cplusplus |
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275 | extern "C" { |
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276 | # endif |
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277 | int eventfd (unsigned int initval, int flags); |
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278 | # ifdef __cplusplus |
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279 | } |
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280 | # endif |
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281 | #endif |
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282 | |
173 | /**/ |
283 | /**/ |
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284 | |
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285 | /* |
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286 | * This is used to avoid floating point rounding problems. |
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287 | * It is added to ev_rt_now when scheduling periodics |
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288 | * to ensure progress, time-wise, even when rounding |
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289 | * errors are against us. |
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290 | * This value is good at least till the year 4000. |
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291 | * Better solutions welcome. |
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292 | */ |
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293 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
174 | |
294 | |
175 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
295 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
176 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
296 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
177 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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178 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
297 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
179 | |
298 | |
180 | #ifdef EV_H |
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181 | # include EV_H |
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182 | #else |
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183 | # include "ev.h" |
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184 | #endif |
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185 | |
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186 | #if __GNUC__ >= 3 |
299 | #if __GNUC__ >= 4 |
187 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
300 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
188 | # define inline static inline |
301 | # define noinline __attribute__ ((noinline)) |
189 | #else |
302 | #else |
190 | # define expect(expr,value) (expr) |
303 | # define expect(expr,value) (expr) |
191 | # define inline static |
304 | # define noinline |
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305 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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306 | # define inline |
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307 | # endif |
192 | #endif |
308 | #endif |
193 | |
309 | |
194 | #define expect_false(expr) expect ((expr) != 0, 0) |
310 | #define expect_false(expr) expect ((expr) != 0, 0) |
195 | #define expect_true(expr) expect ((expr) != 0, 1) |
311 | #define expect_true(expr) expect ((expr) != 0, 1) |
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312 | #define inline_size static inline |
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313 | |
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314 | #if EV_MINIMAL |
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315 | # define inline_speed static noinline |
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316 | #else |
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317 | # define inline_speed static inline |
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318 | #endif |
196 | |
319 | |
197 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
320 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
198 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
321 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
199 | |
322 | |
200 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
323 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
201 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
324 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
202 | |
325 | |
203 | typedef struct ev_watcher *W; |
326 | typedef ev_watcher *W; |
204 | typedef struct ev_watcher_list *WL; |
327 | typedef ev_watcher_list *WL; |
205 | typedef struct ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
206 | |
329 | |
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330 | #define ev_active(w) ((W)(w))->active |
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331 | #define ev_at(w) ((WT)(w))->at |
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332 | |
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333 | #if EV_USE_MONOTONIC |
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334 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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335 | /* giving it a reasonably high chance of working on typical architetcures */ |
207 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
336 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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337 | #endif |
208 | |
338 | |
209 | #ifdef _WIN32 |
339 | #ifdef _WIN32 |
210 | # include "ev_win32.c" |
340 | # include "ev_win32.c" |
211 | #endif |
341 | #endif |
212 | |
342 | |
213 | /*****************************************************************************/ |
343 | /*****************************************************************************/ |
214 | |
344 | |
215 | static void (*syserr_cb)(const char *msg); |
345 | static void (*syserr_cb)(const char *msg); |
216 | |
346 | |
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347 | void |
217 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
348 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
218 | { |
349 | { |
219 | syserr_cb = cb; |
350 | syserr_cb = cb; |
220 | } |
351 | } |
221 | |
352 | |
222 | static void |
353 | static void noinline |
223 | syserr (const char *msg) |
354 | syserr (const char *msg) |
224 | { |
355 | { |
225 | if (!msg) |
356 | if (!msg) |
226 | msg = "(libev) system error"; |
357 | msg = "(libev) system error"; |
227 | |
358 | |
… | |
… | |
232 | perror (msg); |
363 | perror (msg); |
233 | abort (); |
364 | abort (); |
234 | } |
365 | } |
235 | } |
366 | } |
236 | |
367 | |
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368 | static void * |
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369 | ev_realloc_emul (void *ptr, long size) |
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370 | { |
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371 | /* some systems, notably openbsd and darwin, fail to properly |
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372 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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373 | * the single unix specification, so work around them here. |
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374 | */ |
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375 | |
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376 | if (size) |
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377 | return realloc (ptr, size); |
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378 | |
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379 | free (ptr); |
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380 | return 0; |
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381 | } |
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382 | |
237 | static void *(*alloc)(void *ptr, long size); |
383 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
238 | |
384 | |
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385 | void |
239 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
386 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
240 | { |
387 | { |
241 | alloc = cb; |
388 | alloc = cb; |
242 | } |
389 | } |
243 | |
390 | |
244 | static void * |
391 | inline_speed void * |
245 | ev_realloc (void *ptr, long size) |
392 | ev_realloc (void *ptr, long size) |
246 | { |
393 | { |
247 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
394 | ptr = alloc (ptr, size); |
248 | |
395 | |
249 | if (!ptr && size) |
396 | if (!ptr && size) |
250 | { |
397 | { |
251 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
398 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
252 | abort (); |
399 | abort (); |
… | |
… | |
273 | typedef struct |
420 | typedef struct |
274 | { |
421 | { |
275 | W w; |
422 | W w; |
276 | int events; |
423 | int events; |
277 | } ANPENDING; |
424 | } ANPENDING; |
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425 | |
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426 | #if EV_USE_INOTIFY |
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427 | typedef struct |
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428 | { |
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429 | WL head; |
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430 | } ANFS; |
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431 | #endif |
278 | |
432 | |
279 | #if EV_MULTIPLICITY |
433 | #if EV_MULTIPLICITY |
280 | |
434 | |
281 | struct ev_loop |
435 | struct ev_loop |
282 | { |
436 | { |
… | |
… | |
316 | gettimeofday (&tv, 0); |
470 | gettimeofday (&tv, 0); |
317 | return tv.tv_sec + tv.tv_usec * 1e-6; |
471 | return tv.tv_sec + tv.tv_usec * 1e-6; |
318 | #endif |
472 | #endif |
319 | } |
473 | } |
320 | |
474 | |
321 | inline ev_tstamp |
475 | ev_tstamp inline_size |
322 | get_clock (void) |
476 | get_clock (void) |
323 | { |
477 | { |
324 | #if EV_USE_MONOTONIC |
478 | #if EV_USE_MONOTONIC |
325 | if (expect_true (have_monotonic)) |
479 | if (expect_true (have_monotonic)) |
326 | { |
480 | { |
… | |
… | |
339 | { |
493 | { |
340 | return ev_rt_now; |
494 | return ev_rt_now; |
341 | } |
495 | } |
342 | #endif |
496 | #endif |
343 | |
497 | |
344 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
498 | void |
|
|
499 | ev_sleep (ev_tstamp delay) |
|
|
500 | { |
|
|
501 | if (delay > 0.) |
|
|
502 | { |
|
|
503 | #if EV_USE_NANOSLEEP |
|
|
504 | struct timespec ts; |
|
|
505 | |
|
|
506 | ts.tv_sec = (time_t)delay; |
|
|
507 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
508 | |
|
|
509 | nanosleep (&ts, 0); |
|
|
510 | #elif defined(_WIN32) |
|
|
511 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
512 | #else |
|
|
513 | struct timeval tv; |
|
|
514 | |
|
|
515 | tv.tv_sec = (time_t)delay; |
|
|
516 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
517 | |
|
|
518 | select (0, 0, 0, 0, &tv); |
|
|
519 | #endif |
|
|
520 | } |
|
|
521 | } |
|
|
522 | |
|
|
523 | /*****************************************************************************/ |
|
|
524 | |
|
|
525 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
526 | |
|
|
527 | int inline_size |
|
|
528 | array_nextsize (int elem, int cur, int cnt) |
|
|
529 | { |
|
|
530 | int ncur = cur + 1; |
|
|
531 | |
|
|
532 | do |
|
|
533 | ncur <<= 1; |
|
|
534 | while (cnt > ncur); |
|
|
535 | |
|
|
536 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
537 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
538 | { |
|
|
539 | ncur *= elem; |
|
|
540 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
541 | ncur = ncur - sizeof (void *) * 4; |
|
|
542 | ncur /= elem; |
|
|
543 | } |
|
|
544 | |
|
|
545 | return ncur; |
|
|
546 | } |
|
|
547 | |
|
|
548 | static noinline void * |
|
|
549 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
550 | { |
|
|
551 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
552 | return ev_realloc (base, elem * *cur); |
|
|
553 | } |
345 | |
554 | |
346 | #define array_needsize(type,base,cur,cnt,init) \ |
555 | #define array_needsize(type,base,cur,cnt,init) \ |
347 | if (expect_false ((cnt) > cur)) \ |
556 | if (expect_false ((cnt) > (cur))) \ |
348 | { \ |
557 | { \ |
349 | int newcnt = cur; \ |
558 | int ocur_ = (cur); \ |
350 | do \ |
559 | (base) = (type *)array_realloc \ |
351 | { \ |
560 | (sizeof (type), (base), &(cur), (cnt)); \ |
352 | newcnt = array_roundsize (type, newcnt << 1); \ |
561 | init ((base) + (ocur_), (cur) - ocur_); \ |
353 | } \ |
|
|
354 | while ((cnt) > newcnt); \ |
|
|
355 | \ |
|
|
356 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
357 | init (base + cur, newcnt - cur); \ |
|
|
358 | cur = newcnt; \ |
|
|
359 | } |
562 | } |
360 | |
563 | |
|
|
564 | #if 0 |
361 | #define array_slim(type,stem) \ |
565 | #define array_slim(type,stem) \ |
362 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
566 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
363 | { \ |
567 | { \ |
364 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
568 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
365 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
569 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
366 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
570 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
367 | } |
571 | } |
|
|
572 | #endif |
368 | |
573 | |
369 | #define array_free(stem, idx) \ |
574 | #define array_free(stem, idx) \ |
370 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
575 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
371 | |
576 | |
372 | /*****************************************************************************/ |
577 | /*****************************************************************************/ |
373 | |
578 | |
374 | static void |
579 | void noinline |
|
|
580 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
581 | { |
|
|
582 | W w_ = (W)w; |
|
|
583 | int pri = ABSPRI (w_); |
|
|
584 | |
|
|
585 | if (expect_false (w_->pending)) |
|
|
586 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
587 | else |
|
|
588 | { |
|
|
589 | w_->pending = ++pendingcnt [pri]; |
|
|
590 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
591 | pendings [pri][w_->pending - 1].w = w_; |
|
|
592 | pendings [pri][w_->pending - 1].events = revents; |
|
|
593 | } |
|
|
594 | } |
|
|
595 | |
|
|
596 | void inline_speed |
|
|
597 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
598 | { |
|
|
599 | int i; |
|
|
600 | |
|
|
601 | for (i = 0; i < eventcnt; ++i) |
|
|
602 | ev_feed_event (EV_A_ events [i], type); |
|
|
603 | } |
|
|
604 | |
|
|
605 | /*****************************************************************************/ |
|
|
606 | |
|
|
607 | void inline_size |
375 | anfds_init (ANFD *base, int count) |
608 | anfds_init (ANFD *base, int count) |
376 | { |
609 | { |
377 | while (count--) |
610 | while (count--) |
378 | { |
611 | { |
379 | base->head = 0; |
612 | base->head = 0; |
… | |
… | |
382 | |
615 | |
383 | ++base; |
616 | ++base; |
384 | } |
617 | } |
385 | } |
618 | } |
386 | |
619 | |
387 | void |
620 | void inline_speed |
388 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
389 | { |
|
|
390 | W w_ = (W)w; |
|
|
391 | |
|
|
392 | if (expect_false (w_->pending)) |
|
|
393 | { |
|
|
394 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
|
|
395 | return; |
|
|
396 | } |
|
|
397 | |
|
|
398 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
399 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
|
|
400 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
401 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
402 | } |
|
|
403 | |
|
|
404 | static void |
|
|
405 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
406 | { |
|
|
407 | int i; |
|
|
408 | |
|
|
409 | for (i = 0; i < eventcnt; ++i) |
|
|
410 | ev_feed_event (EV_A_ events [i], type); |
|
|
411 | } |
|
|
412 | |
|
|
413 | inline void |
|
|
414 | fd_event (EV_P_ int fd, int revents) |
621 | fd_event (EV_P_ int fd, int revents) |
415 | { |
622 | { |
416 | ANFD *anfd = anfds + fd; |
623 | ANFD *anfd = anfds + fd; |
417 | struct ev_io *w; |
624 | ev_io *w; |
418 | |
625 | |
419 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
626 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
420 | { |
627 | { |
421 | int ev = w->events & revents; |
628 | int ev = w->events & revents; |
422 | |
629 | |
423 | if (ev) |
630 | if (ev) |
424 | ev_feed_event (EV_A_ (W)w, ev); |
631 | ev_feed_event (EV_A_ (W)w, ev); |
… | |
… | |
426 | } |
633 | } |
427 | |
634 | |
428 | void |
635 | void |
429 | ev_feed_fd_event (EV_P_ int fd, int revents) |
636 | ev_feed_fd_event (EV_P_ int fd, int revents) |
430 | { |
637 | { |
|
|
638 | if (fd >= 0 && fd < anfdmax) |
431 | fd_event (EV_A_ fd, revents); |
639 | fd_event (EV_A_ fd, revents); |
432 | } |
640 | } |
433 | |
641 | |
434 | /*****************************************************************************/ |
642 | void inline_size |
435 | |
|
|
436 | inline void |
|
|
437 | fd_reify (EV_P) |
643 | fd_reify (EV_P) |
438 | { |
644 | { |
439 | int i; |
645 | int i; |
440 | |
646 | |
441 | for (i = 0; i < fdchangecnt; ++i) |
647 | for (i = 0; i < fdchangecnt; ++i) |
442 | { |
648 | { |
443 | int fd = fdchanges [i]; |
649 | int fd = fdchanges [i]; |
444 | ANFD *anfd = anfds + fd; |
650 | ANFD *anfd = anfds + fd; |
445 | struct ev_io *w; |
651 | ev_io *w; |
446 | |
652 | |
447 | int events = 0; |
653 | unsigned char events = 0; |
448 | |
654 | |
449 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
655 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
450 | events |= w->events; |
656 | events |= (unsigned char)w->events; |
451 | |
657 | |
452 | #if EV_SELECT_IS_WINSOCKET |
658 | #if EV_SELECT_IS_WINSOCKET |
453 | if (events) |
659 | if (events) |
454 | { |
660 | { |
455 | unsigned long argp; |
661 | unsigned long argp; |
|
|
662 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
663 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
664 | #else |
456 | anfd->handle = _get_osfhandle (fd); |
665 | anfd->handle = _get_osfhandle (fd); |
|
|
666 | #endif |
457 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
667 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
458 | } |
668 | } |
459 | #endif |
669 | #endif |
460 | |
670 | |
|
|
671 | { |
|
|
672 | unsigned char o_events = anfd->events; |
|
|
673 | unsigned char o_reify = anfd->reify; |
|
|
674 | |
461 | anfd->reify = 0; |
675 | anfd->reify = 0; |
462 | |
|
|
463 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
464 | anfd->events = events; |
676 | anfd->events = events; |
|
|
677 | |
|
|
678 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
679 | backend_modify (EV_A_ fd, o_events, events); |
|
|
680 | } |
465 | } |
681 | } |
466 | |
682 | |
467 | fdchangecnt = 0; |
683 | fdchangecnt = 0; |
468 | } |
684 | } |
469 | |
685 | |
470 | static void |
686 | void inline_size |
471 | fd_change (EV_P_ int fd) |
687 | fd_change (EV_P_ int fd, int flags) |
472 | { |
688 | { |
473 | if (expect_false (anfds [fd].reify)) |
689 | unsigned char reify = anfds [fd].reify; |
474 | return; |
|
|
475 | |
|
|
476 | anfds [fd].reify = 1; |
690 | anfds [fd].reify |= flags; |
477 | |
691 | |
|
|
692 | if (expect_true (!reify)) |
|
|
693 | { |
478 | ++fdchangecnt; |
694 | ++fdchangecnt; |
479 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
695 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
480 | fdchanges [fdchangecnt - 1] = fd; |
696 | fdchanges [fdchangecnt - 1] = fd; |
|
|
697 | } |
481 | } |
698 | } |
482 | |
699 | |
483 | static void |
700 | void inline_speed |
484 | fd_kill (EV_P_ int fd) |
701 | fd_kill (EV_P_ int fd) |
485 | { |
702 | { |
486 | struct ev_io *w; |
703 | ev_io *w; |
487 | |
704 | |
488 | while ((w = (struct ev_io *)anfds [fd].head)) |
705 | while ((w = (ev_io *)anfds [fd].head)) |
489 | { |
706 | { |
490 | ev_io_stop (EV_A_ w); |
707 | ev_io_stop (EV_A_ w); |
491 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
708 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
492 | } |
709 | } |
493 | } |
710 | } |
494 | |
711 | |
495 | inline int |
712 | int inline_size |
496 | fd_valid (int fd) |
713 | fd_valid (int fd) |
497 | { |
714 | { |
498 | #ifdef _WIN32 |
715 | #ifdef _WIN32 |
499 | return _get_osfhandle (fd) != -1; |
716 | return _get_osfhandle (fd) != -1; |
500 | #else |
717 | #else |
501 | return fcntl (fd, F_GETFD) != -1; |
718 | return fcntl (fd, F_GETFD) != -1; |
502 | #endif |
719 | #endif |
503 | } |
720 | } |
504 | |
721 | |
505 | /* called on EBADF to verify fds */ |
722 | /* called on EBADF to verify fds */ |
506 | static void |
723 | static void noinline |
507 | fd_ebadf (EV_P) |
724 | fd_ebadf (EV_P) |
508 | { |
725 | { |
509 | int fd; |
726 | int fd; |
510 | |
727 | |
511 | for (fd = 0; fd < anfdmax; ++fd) |
728 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
513 | if (!fd_valid (fd) == -1 && errno == EBADF) |
730 | if (!fd_valid (fd) == -1 && errno == EBADF) |
514 | fd_kill (EV_A_ fd); |
731 | fd_kill (EV_A_ fd); |
515 | } |
732 | } |
516 | |
733 | |
517 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
734 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
518 | static void |
735 | static void noinline |
519 | fd_enomem (EV_P) |
736 | fd_enomem (EV_P) |
520 | { |
737 | { |
521 | int fd; |
738 | int fd; |
522 | |
739 | |
523 | for (fd = anfdmax; fd--; ) |
740 | for (fd = anfdmax; fd--; ) |
… | |
… | |
527 | return; |
744 | return; |
528 | } |
745 | } |
529 | } |
746 | } |
530 | |
747 | |
531 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
748 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
532 | static void |
749 | static void noinline |
533 | fd_rearm_all (EV_P) |
750 | fd_rearm_all (EV_P) |
534 | { |
751 | { |
535 | int fd; |
752 | int fd; |
536 | |
753 | |
537 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
538 | for (fd = 0; fd < anfdmax; ++fd) |
754 | for (fd = 0; fd < anfdmax; ++fd) |
539 | if (anfds [fd].events) |
755 | if (anfds [fd].events) |
540 | { |
756 | { |
541 | anfds [fd].events = 0; |
757 | anfds [fd].events = 0; |
542 | fd_change (EV_A_ fd); |
758 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
543 | } |
759 | } |
544 | } |
760 | } |
545 | |
761 | |
546 | /*****************************************************************************/ |
762 | /*****************************************************************************/ |
547 | |
763 | |
548 | static void |
764 | /* |
|
|
765 | * at the moment we allow libev the luxury of two heaps, |
|
|
766 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
767 | * which is more cache-efficient. |
|
|
768 | * the difference is about 5% with 50000+ watchers. |
|
|
769 | */ |
|
|
770 | #define USE_4HEAP !EV_MINIMAL |
|
|
771 | #if USE_4HEAP |
|
|
772 | |
|
|
773 | #define HEAP0 3 /* index of first element in heap */ |
|
|
774 | |
|
|
775 | /* towards the root */ |
|
|
776 | void inline_speed |
549 | upheap (WT *heap, int k) |
777 | upheap (WT *heap, int k) |
550 | { |
778 | { |
551 | WT w = heap [k]; |
779 | WT w = heap [k]; |
552 | |
780 | |
553 | while (k && heap [k >> 1]->at > w->at) |
781 | for (;;) |
554 | { |
782 | { |
|
|
783 | int p = ((k - HEAP0 - 1) / 4) + HEAP0; |
|
|
784 | |
|
|
785 | if (p >= HEAP0 || heap [p]->at <= w->at) |
|
|
786 | break; |
|
|
787 | |
555 | heap [k] = heap [k >> 1]; |
788 | heap [k] = heap [p]; |
556 | ((W)heap [k])->active = k + 1; |
789 | ev_active (heap [k]) = k; |
557 | k >>= 1; |
790 | k = p; |
558 | } |
791 | } |
559 | |
792 | |
560 | heap [k] = w; |
793 | heap [k] = w; |
561 | ((W)heap [k])->active = k + 1; |
794 | ev_active (heap [k]) = k; |
562 | |
|
|
563 | } |
795 | } |
564 | |
796 | |
565 | static void |
797 | /* away from the root */ |
|
|
798 | void inline_speed |
566 | downheap (WT *heap, int N, int k) |
799 | downheap (WT *heap, int N, int k) |
567 | { |
800 | { |
568 | WT w = heap [k]; |
801 | WT w = heap [k]; |
|
|
802 | WT *E = heap + N + HEAP0; |
569 | |
803 | |
570 | while (k < (N >> 1)) |
804 | for (;;) |
571 | { |
805 | { |
572 | int j = k << 1; |
806 | ev_tstamp minat; |
|
|
807 | WT *minpos; |
|
|
808 | WT *pos = heap + 4 * (k - HEAP0) + HEAP0; |
573 | |
809 | |
574 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
810 | // find minimum child |
|
|
811 | if (expect_true (pos +3 < E)) |
575 | ++j; |
812 | { |
|
|
813 | (minpos = pos + 0), (minat = (*minpos)->at); |
|
|
814 | if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); |
|
|
815 | if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); |
|
|
816 | if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); |
|
|
817 | } |
|
|
818 | else |
|
|
819 | { |
|
|
820 | if (pos >= E) |
|
|
821 | break; |
576 | |
822 | |
|
|
823 | (minpos = pos + 0), (minat = (*minpos)->at); |
|
|
824 | if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); |
|
|
825 | if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); |
|
|
826 | if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); |
|
|
827 | } |
|
|
828 | |
577 | if (w->at <= heap [j]->at) |
829 | if (w->at <= minat) |
578 | break; |
830 | break; |
579 | |
831 | |
580 | heap [k] = heap [j]; |
832 | ev_active (*minpos) = k; |
581 | ((W)heap [k])->active = k + 1; |
833 | heap [k] = *minpos; |
582 | k = j; |
834 | |
|
|
835 | k = minpos - heap; |
583 | } |
836 | } |
584 | |
837 | |
585 | heap [k] = w; |
838 | heap [k] = w; |
|
|
839 | ev_active (heap [k]) = k; |
|
|
840 | } |
|
|
841 | |
|
|
842 | #else // 4HEAP |
|
|
843 | |
|
|
844 | #define HEAP0 1 |
|
|
845 | |
|
|
846 | /* towards the root */ |
|
|
847 | void inline_speed |
|
|
848 | upheap (WT *heap, int k) |
|
|
849 | { |
|
|
850 | WT w = heap [k]; |
|
|
851 | |
|
|
852 | for (;;) |
|
|
853 | { |
|
|
854 | int p = k >> 1; |
|
|
855 | |
|
|
856 | /* maybe we could use a dummy element at heap [0]? */ |
|
|
857 | if (!p || heap [p]->at <= w->at) |
|
|
858 | break; |
|
|
859 | |
|
|
860 | heap [k] = heap [p]; |
|
|
861 | ev_active (heap [k]) = k; |
|
|
862 | k = p; |
|
|
863 | } |
|
|
864 | |
|
|
865 | heap [k] = w; |
|
|
866 | ev_active (heap [k]) = k; |
|
|
867 | } |
|
|
868 | |
|
|
869 | /* away from the root */ |
|
|
870 | void inline_speed |
|
|
871 | downheap (WT *heap, int N, int k) |
|
|
872 | { |
|
|
873 | WT w = heap [k]; |
|
|
874 | |
|
|
875 | for (;;) |
|
|
876 | { |
|
|
877 | int c = k << 1; |
|
|
878 | |
|
|
879 | if (c > N) |
|
|
880 | break; |
|
|
881 | |
|
|
882 | c += c + 1 < N && heap [c]->at > heap [c + 1]->at |
|
|
883 | ? 1 : 0; |
|
|
884 | |
|
|
885 | if (w->at <= heap [c]->at) |
|
|
886 | break; |
|
|
887 | |
|
|
888 | heap [k] = heap [c]; |
586 | ((W)heap [k])->active = k + 1; |
889 | ((W)heap [k])->active = k; |
587 | } |
890 | |
|
|
891 | k = c; |
|
|
892 | } |
588 | |
893 | |
589 | inline void |
894 | heap [k] = w; |
|
|
895 | ev_active (heap [k]) = k; |
|
|
896 | } |
|
|
897 | #endif |
|
|
898 | |
|
|
899 | void inline_size |
590 | adjustheap (WT *heap, int N, int k) |
900 | adjustheap (WT *heap, int N, int k) |
591 | { |
901 | { |
592 | upheap (heap, k); |
902 | upheap (heap, k); |
593 | downheap (heap, N, k); |
903 | downheap (heap, N, k); |
594 | } |
904 | } |
… | |
… | |
596 | /*****************************************************************************/ |
906 | /*****************************************************************************/ |
597 | |
907 | |
598 | typedef struct |
908 | typedef struct |
599 | { |
909 | { |
600 | WL head; |
910 | WL head; |
601 | sig_atomic_t volatile gotsig; |
911 | EV_ATOMIC_T gotsig; |
602 | } ANSIG; |
912 | } ANSIG; |
603 | |
913 | |
604 | static ANSIG *signals; |
914 | static ANSIG *signals; |
605 | static int signalmax; |
915 | static int signalmax; |
606 | |
916 | |
607 | static int sigpipe [2]; |
917 | static EV_ATOMIC_T gotsig; |
608 | static sig_atomic_t volatile gotsig; |
|
|
609 | static struct ev_io sigev; |
|
|
610 | |
918 | |
611 | static void |
919 | void inline_size |
612 | signals_init (ANSIG *base, int count) |
920 | signals_init (ANSIG *base, int count) |
613 | { |
921 | { |
614 | while (count--) |
922 | while (count--) |
615 | { |
923 | { |
616 | base->head = 0; |
924 | base->head = 0; |
… | |
… | |
618 | |
926 | |
619 | ++base; |
927 | ++base; |
620 | } |
928 | } |
621 | } |
929 | } |
622 | |
930 | |
623 | static void |
931 | /*****************************************************************************/ |
624 | sighandler (int signum) |
|
|
625 | { |
|
|
626 | #if _WIN32 |
|
|
627 | signal (signum, sighandler); |
|
|
628 | #endif |
|
|
629 | |
932 | |
630 | signals [signum - 1].gotsig = 1; |
933 | void inline_speed |
631 | |
|
|
632 | if (!gotsig) |
|
|
633 | { |
|
|
634 | int old_errno = errno; |
|
|
635 | gotsig = 1; |
|
|
636 | write (sigpipe [1], &signum, 1); |
|
|
637 | errno = old_errno; |
|
|
638 | } |
|
|
639 | } |
|
|
640 | |
|
|
641 | void |
|
|
642 | ev_feed_signal_event (EV_P_ int signum) |
|
|
643 | { |
|
|
644 | WL w; |
|
|
645 | |
|
|
646 | #if EV_MULTIPLICITY |
|
|
647 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
648 | #endif |
|
|
649 | |
|
|
650 | --signum; |
|
|
651 | |
|
|
652 | if (signum < 0 || signum >= signalmax) |
|
|
653 | return; |
|
|
654 | |
|
|
655 | signals [signum].gotsig = 0; |
|
|
656 | |
|
|
657 | for (w = signals [signum].head; w; w = w->next) |
|
|
658 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
659 | } |
|
|
660 | |
|
|
661 | static void |
|
|
662 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
663 | { |
|
|
664 | int signum; |
|
|
665 | |
|
|
666 | read (sigpipe [0], &revents, 1); |
|
|
667 | gotsig = 0; |
|
|
668 | |
|
|
669 | for (signum = signalmax; signum--; ) |
|
|
670 | if (signals [signum].gotsig) |
|
|
671 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
672 | } |
|
|
673 | |
|
|
674 | static void |
|
|
675 | fd_intern (int fd) |
934 | fd_intern (int fd) |
676 | { |
935 | { |
677 | #ifdef _WIN32 |
936 | #ifdef _WIN32 |
678 | int arg = 1; |
937 | int arg = 1; |
679 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
938 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
… | |
… | |
681 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
940 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
682 | fcntl (fd, F_SETFL, O_NONBLOCK); |
941 | fcntl (fd, F_SETFL, O_NONBLOCK); |
683 | #endif |
942 | #endif |
684 | } |
943 | } |
685 | |
944 | |
|
|
945 | static void noinline |
|
|
946 | evpipe_init (EV_P) |
|
|
947 | { |
|
|
948 | if (!ev_is_active (&pipeev)) |
|
|
949 | { |
|
|
950 | #if EV_USE_EVENTFD |
|
|
951 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
952 | { |
|
|
953 | evpipe [0] = -1; |
|
|
954 | fd_intern (evfd); |
|
|
955 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
956 | } |
|
|
957 | else |
|
|
958 | #endif |
|
|
959 | { |
|
|
960 | while (pipe (evpipe)) |
|
|
961 | syserr ("(libev) error creating signal/async pipe"); |
|
|
962 | |
|
|
963 | fd_intern (evpipe [0]); |
|
|
964 | fd_intern (evpipe [1]); |
|
|
965 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
966 | } |
|
|
967 | |
|
|
968 | ev_io_start (EV_A_ &pipeev); |
|
|
969 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
970 | } |
|
|
971 | } |
|
|
972 | |
|
|
973 | void inline_size |
|
|
974 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
975 | { |
|
|
976 | if (!*flag) |
|
|
977 | { |
|
|
978 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
979 | |
|
|
980 | *flag = 1; |
|
|
981 | |
|
|
982 | #if EV_USE_EVENTFD |
|
|
983 | if (evfd >= 0) |
|
|
984 | { |
|
|
985 | uint64_t counter = 1; |
|
|
986 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
987 | } |
|
|
988 | else |
|
|
989 | #endif |
|
|
990 | write (evpipe [1], &old_errno, 1); |
|
|
991 | |
|
|
992 | errno = old_errno; |
|
|
993 | } |
|
|
994 | } |
|
|
995 | |
686 | static void |
996 | static void |
687 | siginit (EV_P) |
997 | pipecb (EV_P_ ev_io *iow, int revents) |
688 | { |
998 | { |
689 | fd_intern (sigpipe [0]); |
999 | #if EV_USE_EVENTFD |
690 | fd_intern (sigpipe [1]); |
1000 | if (evfd >= 0) |
|
|
1001 | { |
|
|
1002 | uint64_t counter; |
|
|
1003 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1004 | } |
|
|
1005 | else |
|
|
1006 | #endif |
|
|
1007 | { |
|
|
1008 | char dummy; |
|
|
1009 | read (evpipe [0], &dummy, 1); |
|
|
1010 | } |
691 | |
1011 | |
692 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
1012 | if (gotsig && ev_is_default_loop (EV_A)) |
693 | ev_io_start (EV_A_ &sigev); |
1013 | { |
694 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1014 | int signum; |
|
|
1015 | gotsig = 0; |
|
|
1016 | |
|
|
1017 | for (signum = signalmax; signum--; ) |
|
|
1018 | if (signals [signum].gotsig) |
|
|
1019 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1020 | } |
|
|
1021 | |
|
|
1022 | #if EV_ASYNC_ENABLE |
|
|
1023 | if (gotasync) |
|
|
1024 | { |
|
|
1025 | int i; |
|
|
1026 | gotasync = 0; |
|
|
1027 | |
|
|
1028 | for (i = asynccnt; i--; ) |
|
|
1029 | if (asyncs [i]->sent) |
|
|
1030 | { |
|
|
1031 | asyncs [i]->sent = 0; |
|
|
1032 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1033 | } |
|
|
1034 | } |
|
|
1035 | #endif |
695 | } |
1036 | } |
696 | |
1037 | |
697 | /*****************************************************************************/ |
1038 | /*****************************************************************************/ |
698 | |
1039 | |
699 | static struct ev_child *childs [PID_HASHSIZE]; |
1040 | static void |
|
|
1041 | ev_sighandler (int signum) |
|
|
1042 | { |
|
|
1043 | #if EV_MULTIPLICITY |
|
|
1044 | struct ev_loop *loop = &default_loop_struct; |
|
|
1045 | #endif |
|
|
1046 | |
|
|
1047 | #if _WIN32 |
|
|
1048 | signal (signum, ev_sighandler); |
|
|
1049 | #endif |
|
|
1050 | |
|
|
1051 | signals [signum - 1].gotsig = 1; |
|
|
1052 | evpipe_write (EV_A_ &gotsig); |
|
|
1053 | } |
|
|
1054 | |
|
|
1055 | void noinline |
|
|
1056 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1057 | { |
|
|
1058 | WL w; |
|
|
1059 | |
|
|
1060 | #if EV_MULTIPLICITY |
|
|
1061 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1062 | #endif |
|
|
1063 | |
|
|
1064 | --signum; |
|
|
1065 | |
|
|
1066 | if (signum < 0 || signum >= signalmax) |
|
|
1067 | return; |
|
|
1068 | |
|
|
1069 | signals [signum].gotsig = 0; |
|
|
1070 | |
|
|
1071 | for (w = signals [signum].head; w; w = w->next) |
|
|
1072 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1073 | } |
|
|
1074 | |
|
|
1075 | /*****************************************************************************/ |
|
|
1076 | |
|
|
1077 | static WL childs [EV_PID_HASHSIZE]; |
700 | |
1078 | |
701 | #ifndef _WIN32 |
1079 | #ifndef _WIN32 |
702 | |
1080 | |
703 | static struct ev_signal childev; |
1081 | static ev_signal childev; |
|
|
1082 | |
|
|
1083 | #ifndef WIFCONTINUED |
|
|
1084 | # define WIFCONTINUED(status) 0 |
|
|
1085 | #endif |
|
|
1086 | |
|
|
1087 | void inline_speed |
|
|
1088 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1089 | { |
|
|
1090 | ev_child *w; |
|
|
1091 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1092 | |
|
|
1093 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1094 | { |
|
|
1095 | if ((w->pid == pid || !w->pid) |
|
|
1096 | && (!traced || (w->flags & 1))) |
|
|
1097 | { |
|
|
1098 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1099 | w->rpid = pid; |
|
|
1100 | w->rstatus = status; |
|
|
1101 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1102 | } |
|
|
1103 | } |
|
|
1104 | } |
704 | |
1105 | |
705 | #ifndef WCONTINUED |
1106 | #ifndef WCONTINUED |
706 | # define WCONTINUED 0 |
1107 | # define WCONTINUED 0 |
707 | #endif |
1108 | #endif |
708 | |
1109 | |
709 | static void |
1110 | static void |
710 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
711 | { |
|
|
712 | struct ev_child *w; |
|
|
713 | |
|
|
714 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
715 | if (w->pid == pid || !w->pid) |
|
|
716 | { |
|
|
717 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
718 | w->rpid = pid; |
|
|
719 | w->rstatus = status; |
|
|
720 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
721 | } |
|
|
722 | } |
|
|
723 | |
|
|
724 | static void |
|
|
725 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1111 | childcb (EV_P_ ev_signal *sw, int revents) |
726 | { |
1112 | { |
727 | int pid, status; |
1113 | int pid, status; |
728 | |
1114 | |
|
|
1115 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
729 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1116 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
730 | { |
1117 | if (!WCONTINUED |
|
|
1118 | || errno != EINVAL |
|
|
1119 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1120 | return; |
|
|
1121 | |
731 | /* make sure we are called again until all childs have been reaped */ |
1122 | /* make sure we are called again until all children have been reaped */ |
|
|
1123 | /* we need to do it this way so that the callback gets called before we continue */ |
732 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1124 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
733 | |
1125 | |
734 | child_reap (EV_A_ sw, pid, pid, status); |
1126 | child_reap (EV_A_ pid, pid, status); |
|
|
1127 | if (EV_PID_HASHSIZE > 1) |
735 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1128 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
736 | } |
|
|
737 | } |
1129 | } |
738 | |
1130 | |
739 | #endif |
1131 | #endif |
740 | |
1132 | |
741 | /*****************************************************************************/ |
1133 | /*****************************************************************************/ |
… | |
… | |
767 | { |
1159 | { |
768 | return EV_VERSION_MINOR; |
1160 | return EV_VERSION_MINOR; |
769 | } |
1161 | } |
770 | |
1162 | |
771 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1163 | /* return true if we are running with elevated privileges and should ignore env variables */ |
772 | static int |
1164 | int inline_size |
773 | enable_secure (void) |
1165 | enable_secure (void) |
774 | { |
1166 | { |
775 | #ifdef _WIN32 |
1167 | #ifdef _WIN32 |
776 | return 0; |
1168 | return 0; |
777 | #else |
1169 | #else |
… | |
… | |
811 | |
1203 | |
812 | return flags; |
1204 | return flags; |
813 | } |
1205 | } |
814 | |
1206 | |
815 | unsigned int |
1207 | unsigned int |
|
|
1208 | ev_embeddable_backends (void) |
|
|
1209 | { |
|
|
1210 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1211 | |
|
|
1212 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1213 | /* please fix it and tell me how to detect the fix */ |
|
|
1214 | flags &= ~EVBACKEND_EPOLL; |
|
|
1215 | |
|
|
1216 | return flags; |
|
|
1217 | } |
|
|
1218 | |
|
|
1219 | unsigned int |
816 | ev_backend (EV_P) |
1220 | ev_backend (EV_P) |
817 | { |
1221 | { |
818 | return backend; |
1222 | return backend; |
819 | } |
1223 | } |
820 | |
1224 | |
821 | static void |
1225 | unsigned int |
|
|
1226 | ev_loop_count (EV_P) |
|
|
1227 | { |
|
|
1228 | return loop_count; |
|
|
1229 | } |
|
|
1230 | |
|
|
1231 | void |
|
|
1232 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1233 | { |
|
|
1234 | io_blocktime = interval; |
|
|
1235 | } |
|
|
1236 | |
|
|
1237 | void |
|
|
1238 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1239 | { |
|
|
1240 | timeout_blocktime = interval; |
|
|
1241 | } |
|
|
1242 | |
|
|
1243 | static void noinline |
822 | loop_init (EV_P_ unsigned int flags) |
1244 | loop_init (EV_P_ unsigned int flags) |
823 | { |
1245 | { |
824 | if (!backend) |
1246 | if (!backend) |
825 | { |
1247 | { |
826 | #if EV_USE_MONOTONIC |
1248 | #if EV_USE_MONOTONIC |
… | |
… | |
829 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1251 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
830 | have_monotonic = 1; |
1252 | have_monotonic = 1; |
831 | } |
1253 | } |
832 | #endif |
1254 | #endif |
833 | |
1255 | |
834 | ev_rt_now = ev_time (); |
1256 | ev_rt_now = ev_time (); |
835 | mn_now = get_clock (); |
1257 | mn_now = get_clock (); |
836 | now_floor = mn_now; |
1258 | now_floor = mn_now; |
837 | rtmn_diff = ev_rt_now - mn_now; |
1259 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1260 | |
|
|
1261 | io_blocktime = 0.; |
|
|
1262 | timeout_blocktime = 0.; |
|
|
1263 | backend = 0; |
|
|
1264 | backend_fd = -1; |
|
|
1265 | gotasync = 0; |
|
|
1266 | #if EV_USE_INOTIFY |
|
|
1267 | fs_fd = -2; |
|
|
1268 | #endif |
|
|
1269 | |
|
|
1270 | /* pid check not overridable via env */ |
|
|
1271 | #ifndef _WIN32 |
|
|
1272 | if (flags & EVFLAG_FORKCHECK) |
|
|
1273 | curpid = getpid (); |
|
|
1274 | #endif |
838 | |
1275 | |
839 | if (!(flags & EVFLAG_NOENV) |
1276 | if (!(flags & EVFLAG_NOENV) |
840 | && !enable_secure () |
1277 | && !enable_secure () |
841 | && getenv ("LIBEV_FLAGS")) |
1278 | && getenv ("LIBEV_FLAGS")) |
842 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1279 | flags = atoi (getenv ("LIBEV_FLAGS")); |
843 | |
1280 | |
844 | if (!(flags & 0x0000ffffUL)) |
1281 | if (!(flags & 0x0000ffffU)) |
845 | flags |= ev_recommended_backends (); |
1282 | flags |= ev_recommended_backends (); |
846 | |
1283 | |
847 | backend = 0; |
|
|
848 | #if EV_USE_PORT |
1284 | #if EV_USE_PORT |
849 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1285 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
850 | #endif |
1286 | #endif |
851 | #if EV_USE_KQUEUE |
1287 | #if EV_USE_KQUEUE |
852 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1288 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
859 | #endif |
1295 | #endif |
860 | #if EV_USE_SELECT |
1296 | #if EV_USE_SELECT |
861 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1297 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
862 | #endif |
1298 | #endif |
863 | |
1299 | |
864 | ev_init (&sigev, sigcb); |
1300 | ev_init (&pipeev, pipecb); |
865 | ev_set_priority (&sigev, EV_MAXPRI); |
1301 | ev_set_priority (&pipeev, EV_MAXPRI); |
866 | } |
1302 | } |
867 | } |
1303 | } |
868 | |
1304 | |
869 | static void |
1305 | static void noinline |
870 | loop_destroy (EV_P) |
1306 | loop_destroy (EV_P) |
871 | { |
1307 | { |
872 | int i; |
1308 | int i; |
|
|
1309 | |
|
|
1310 | if (ev_is_active (&pipeev)) |
|
|
1311 | { |
|
|
1312 | ev_ref (EV_A); /* signal watcher */ |
|
|
1313 | ev_io_stop (EV_A_ &pipeev); |
|
|
1314 | |
|
|
1315 | #if EV_USE_EVENTFD |
|
|
1316 | if (evfd >= 0) |
|
|
1317 | close (evfd); |
|
|
1318 | #endif |
|
|
1319 | |
|
|
1320 | if (evpipe [0] >= 0) |
|
|
1321 | { |
|
|
1322 | close (evpipe [0]); |
|
|
1323 | close (evpipe [1]); |
|
|
1324 | } |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | #if EV_USE_INOTIFY |
|
|
1328 | if (fs_fd >= 0) |
|
|
1329 | close (fs_fd); |
|
|
1330 | #endif |
|
|
1331 | |
|
|
1332 | if (backend_fd >= 0) |
|
|
1333 | close (backend_fd); |
873 | |
1334 | |
874 | #if EV_USE_PORT |
1335 | #if EV_USE_PORT |
875 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1336 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
876 | #endif |
1337 | #endif |
877 | #if EV_USE_KQUEUE |
1338 | #if EV_USE_KQUEUE |
… | |
… | |
886 | #if EV_USE_SELECT |
1347 | #if EV_USE_SELECT |
887 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
1348 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
888 | #endif |
1349 | #endif |
889 | |
1350 | |
890 | for (i = NUMPRI; i--; ) |
1351 | for (i = NUMPRI; i--; ) |
|
|
1352 | { |
891 | array_free (pending, [i]); |
1353 | array_free (pending, [i]); |
|
|
1354 | #if EV_IDLE_ENABLE |
|
|
1355 | array_free (idle, [i]); |
|
|
1356 | #endif |
|
|
1357 | } |
|
|
1358 | |
|
|
1359 | ev_free (anfds); anfdmax = 0; |
892 | |
1360 | |
893 | /* have to use the microsoft-never-gets-it-right macro */ |
1361 | /* have to use the microsoft-never-gets-it-right macro */ |
894 | array_free (fdchange, EMPTY0); |
1362 | array_free (fdchange, EMPTY); |
895 | array_free (timer, EMPTY0); |
1363 | array_free (timer, EMPTY); |
896 | #if EV_PERIODICS |
1364 | #if EV_PERIODIC_ENABLE |
897 | array_free (periodic, EMPTY0); |
1365 | array_free (periodic, EMPTY); |
898 | #endif |
1366 | #endif |
|
|
1367 | #if EV_FORK_ENABLE |
899 | array_free (idle, EMPTY0); |
1368 | array_free (fork, EMPTY); |
|
|
1369 | #endif |
900 | array_free (prepare, EMPTY0); |
1370 | array_free (prepare, EMPTY); |
901 | array_free (check, EMPTY0); |
1371 | array_free (check, EMPTY); |
|
|
1372 | #if EV_ASYNC_ENABLE |
|
|
1373 | array_free (async, EMPTY); |
|
|
1374 | #endif |
902 | |
1375 | |
903 | backend = 0; |
1376 | backend = 0; |
904 | } |
1377 | } |
905 | |
1378 | |
906 | static void |
1379 | #if EV_USE_INOTIFY |
|
|
1380 | void inline_size infy_fork (EV_P); |
|
|
1381 | #endif |
|
|
1382 | |
|
|
1383 | void inline_size |
907 | loop_fork (EV_P) |
1384 | loop_fork (EV_P) |
908 | { |
1385 | { |
909 | #if EV_USE_PORT |
1386 | #if EV_USE_PORT |
910 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1387 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
911 | #endif |
1388 | #endif |
… | |
… | |
913 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
1390 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
914 | #endif |
1391 | #endif |
915 | #if EV_USE_EPOLL |
1392 | #if EV_USE_EPOLL |
916 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
1393 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
917 | #endif |
1394 | #endif |
|
|
1395 | #if EV_USE_INOTIFY |
|
|
1396 | infy_fork (EV_A); |
|
|
1397 | #endif |
918 | |
1398 | |
919 | if (ev_is_active (&sigev)) |
1399 | if (ev_is_active (&pipeev)) |
920 | { |
1400 | { |
921 | /* default loop */ |
1401 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1402 | /* while we modify the fd vars */ |
|
|
1403 | gotsig = 1; |
|
|
1404 | #if EV_ASYNC_ENABLE |
|
|
1405 | gotasync = 1; |
|
|
1406 | #endif |
922 | |
1407 | |
923 | ev_ref (EV_A); |
1408 | ev_ref (EV_A); |
924 | ev_io_stop (EV_A_ &sigev); |
1409 | ev_io_stop (EV_A_ &pipeev); |
|
|
1410 | |
|
|
1411 | #if EV_USE_EVENTFD |
|
|
1412 | if (evfd >= 0) |
|
|
1413 | close (evfd); |
|
|
1414 | #endif |
|
|
1415 | |
|
|
1416 | if (evpipe [0] >= 0) |
|
|
1417 | { |
925 | close (sigpipe [0]); |
1418 | close (evpipe [0]); |
926 | close (sigpipe [1]); |
1419 | close (evpipe [1]); |
|
|
1420 | } |
927 | |
1421 | |
928 | while (pipe (sigpipe)) |
|
|
929 | syserr ("(libev) error creating pipe"); |
|
|
930 | |
|
|
931 | siginit (EV_A); |
1422 | evpipe_init (EV_A); |
|
|
1423 | /* now iterate over everything, in case we missed something */ |
|
|
1424 | pipecb (EV_A_ &pipeev, EV_READ); |
932 | } |
1425 | } |
933 | |
1426 | |
934 | postfork = 0; |
1427 | postfork = 0; |
935 | } |
1428 | } |
936 | |
1429 | |
… | |
… | |
958 | } |
1451 | } |
959 | |
1452 | |
960 | void |
1453 | void |
961 | ev_loop_fork (EV_P) |
1454 | ev_loop_fork (EV_P) |
962 | { |
1455 | { |
963 | postfork = 1; |
1456 | postfork = 1; /* must be in line with ev_default_fork */ |
964 | } |
1457 | } |
965 | |
|
|
966 | #endif |
1458 | #endif |
967 | |
1459 | |
968 | #if EV_MULTIPLICITY |
1460 | #if EV_MULTIPLICITY |
969 | struct ev_loop * |
1461 | struct ev_loop * |
970 | ev_default_loop_init (unsigned int flags) |
1462 | ev_default_loop_init (unsigned int flags) |
971 | #else |
1463 | #else |
972 | int |
1464 | int |
973 | ev_default_loop (unsigned int flags) |
1465 | ev_default_loop (unsigned int flags) |
974 | #endif |
1466 | #endif |
975 | { |
1467 | { |
976 | if (sigpipe [0] == sigpipe [1]) |
|
|
977 | if (pipe (sigpipe)) |
|
|
978 | return 0; |
|
|
979 | |
|
|
980 | if (!ev_default_loop_ptr) |
1468 | if (!ev_default_loop_ptr) |
981 | { |
1469 | { |
982 | #if EV_MULTIPLICITY |
1470 | #if EV_MULTIPLICITY |
983 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1471 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
984 | #else |
1472 | #else |
… | |
… | |
987 | |
1475 | |
988 | loop_init (EV_A_ flags); |
1476 | loop_init (EV_A_ flags); |
989 | |
1477 | |
990 | if (ev_backend (EV_A)) |
1478 | if (ev_backend (EV_A)) |
991 | { |
1479 | { |
992 | siginit (EV_A); |
|
|
993 | |
|
|
994 | #ifndef _WIN32 |
1480 | #ifndef _WIN32 |
995 | ev_signal_init (&childev, childcb, SIGCHLD); |
1481 | ev_signal_init (&childev, childcb, SIGCHLD); |
996 | ev_set_priority (&childev, EV_MAXPRI); |
1482 | ev_set_priority (&childev, EV_MAXPRI); |
997 | ev_signal_start (EV_A_ &childev); |
1483 | ev_signal_start (EV_A_ &childev); |
998 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1484 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1015 | #ifndef _WIN32 |
1501 | #ifndef _WIN32 |
1016 | ev_ref (EV_A); /* child watcher */ |
1502 | ev_ref (EV_A); /* child watcher */ |
1017 | ev_signal_stop (EV_A_ &childev); |
1503 | ev_signal_stop (EV_A_ &childev); |
1018 | #endif |
1504 | #endif |
1019 | |
1505 | |
1020 | ev_ref (EV_A); /* signal watcher */ |
|
|
1021 | ev_io_stop (EV_A_ &sigev); |
|
|
1022 | |
|
|
1023 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1024 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1025 | |
|
|
1026 | loop_destroy (EV_A); |
1506 | loop_destroy (EV_A); |
1027 | } |
1507 | } |
1028 | |
1508 | |
1029 | void |
1509 | void |
1030 | ev_default_fork (void) |
1510 | ev_default_fork (void) |
… | |
… | |
1032 | #if EV_MULTIPLICITY |
1512 | #if EV_MULTIPLICITY |
1033 | struct ev_loop *loop = ev_default_loop_ptr; |
1513 | struct ev_loop *loop = ev_default_loop_ptr; |
1034 | #endif |
1514 | #endif |
1035 | |
1515 | |
1036 | if (backend) |
1516 | if (backend) |
1037 | postfork = 1; |
1517 | postfork = 1; /* must be in line with ev_loop_fork */ |
1038 | } |
1518 | } |
1039 | |
1519 | |
1040 | /*****************************************************************************/ |
1520 | /*****************************************************************************/ |
1041 | |
1521 | |
1042 | static int |
1522 | void |
1043 | any_pending (EV_P) |
1523 | ev_invoke (EV_P_ void *w, int revents) |
1044 | { |
1524 | { |
1045 | int pri; |
1525 | EV_CB_INVOKE ((W)w, revents); |
1046 | |
|
|
1047 | for (pri = NUMPRI; pri--; ) |
|
|
1048 | if (pendingcnt [pri]) |
|
|
1049 | return 1; |
|
|
1050 | |
|
|
1051 | return 0; |
|
|
1052 | } |
1526 | } |
1053 | |
1527 | |
1054 | inline void |
1528 | void inline_speed |
1055 | call_pending (EV_P) |
1529 | call_pending (EV_P) |
1056 | { |
1530 | { |
1057 | int pri; |
1531 | int pri; |
1058 | |
1532 | |
1059 | for (pri = NUMPRI; pri--; ) |
1533 | for (pri = NUMPRI; pri--; ) |
… | |
… | |
1061 | { |
1535 | { |
1062 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1536 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1063 | |
1537 | |
1064 | if (expect_true (p->w)) |
1538 | if (expect_true (p->w)) |
1065 | { |
1539 | { |
|
|
1540 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1541 | |
1066 | p->w->pending = 0; |
1542 | p->w->pending = 0; |
1067 | EV_CB_INVOKE (p->w, p->events); |
1543 | EV_CB_INVOKE (p->w, p->events); |
1068 | } |
1544 | } |
1069 | } |
1545 | } |
1070 | } |
1546 | } |
1071 | |
1547 | |
1072 | inline void |
1548 | #if EV_IDLE_ENABLE |
|
|
1549 | void inline_size |
|
|
1550 | idle_reify (EV_P) |
|
|
1551 | { |
|
|
1552 | if (expect_false (idleall)) |
|
|
1553 | { |
|
|
1554 | int pri; |
|
|
1555 | |
|
|
1556 | for (pri = NUMPRI; pri--; ) |
|
|
1557 | { |
|
|
1558 | if (pendingcnt [pri]) |
|
|
1559 | break; |
|
|
1560 | |
|
|
1561 | if (idlecnt [pri]) |
|
|
1562 | { |
|
|
1563 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1564 | break; |
|
|
1565 | } |
|
|
1566 | } |
|
|
1567 | } |
|
|
1568 | } |
|
|
1569 | #endif |
|
|
1570 | |
|
|
1571 | void inline_size |
1073 | timers_reify (EV_P) |
1572 | timers_reify (EV_P) |
1074 | { |
1573 | { |
1075 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
1574 | while (timercnt && ev_at (timers [HEAP0]) <= mn_now) |
1076 | { |
1575 | { |
1077 | struct ev_timer *w = timers [0]; |
1576 | ev_timer *w = (ev_timer *)timers [HEAP0]; |
1078 | |
1577 | |
1079 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
1578 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
1080 | |
1579 | |
1081 | /* first reschedule or stop timer */ |
1580 | /* first reschedule or stop timer */ |
1082 | if (w->repeat) |
1581 | if (w->repeat) |
1083 | { |
1582 | { |
1084 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1583 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1085 | |
1584 | |
1086 | ((WT)w)->at += w->repeat; |
1585 | ev_at (w) += w->repeat; |
1087 | if (((WT)w)->at < mn_now) |
1586 | if (ev_at (w) < mn_now) |
1088 | ((WT)w)->at = mn_now; |
1587 | ev_at (w) = mn_now; |
1089 | |
1588 | |
1090 | downheap ((WT *)timers, timercnt, 0); |
1589 | downheap (timers, timercnt, HEAP0); |
1091 | } |
1590 | } |
1092 | else |
1591 | else |
1093 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1592 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1094 | |
1593 | |
1095 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
1594 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
1096 | } |
1595 | } |
1097 | } |
1596 | } |
1098 | |
1597 | |
1099 | #if EV_PERIODICS |
1598 | #if EV_PERIODIC_ENABLE |
1100 | inline void |
1599 | void inline_size |
1101 | periodics_reify (EV_P) |
1600 | periodics_reify (EV_P) |
1102 | { |
1601 | { |
1103 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
1602 | while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) |
1104 | { |
1603 | { |
1105 | struct ev_periodic *w = periodics [0]; |
1604 | ev_periodic *w = (ev_periodic *)periodics [HEAP0]; |
1106 | |
1605 | |
1107 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
1606 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1108 | |
1607 | |
1109 | /* first reschedule or stop timer */ |
1608 | /* first reschedule or stop timer */ |
1110 | if (w->reschedule_cb) |
1609 | if (w->reschedule_cb) |
1111 | { |
1610 | { |
1112 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
1611 | ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
1113 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
1612 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); |
1114 | downheap ((WT *)periodics, periodiccnt, 0); |
1613 | downheap (periodics, periodiccnt, 1); |
1115 | } |
1614 | } |
1116 | else if (w->interval) |
1615 | else if (w->interval) |
1117 | { |
1616 | { |
1118 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
1617 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1618 | if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; |
1119 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
1619 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now)); |
1120 | downheap ((WT *)periodics, periodiccnt, 0); |
1620 | downheap (periodics, periodiccnt, HEAP0); |
1121 | } |
1621 | } |
1122 | else |
1622 | else |
1123 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1623 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1124 | |
1624 | |
1125 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
1625 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
1126 | } |
1626 | } |
1127 | } |
1627 | } |
1128 | |
1628 | |
1129 | static void |
1629 | static void noinline |
1130 | periodics_reschedule (EV_P) |
1630 | periodics_reschedule (EV_P) |
1131 | { |
1631 | { |
1132 | int i; |
1632 | int i; |
1133 | |
1633 | |
1134 | /* adjust periodics after time jump */ |
1634 | /* adjust periodics after time jump */ |
1135 | for (i = 0; i < periodiccnt; ++i) |
1635 | for (i = 1; i <= periodiccnt; ++i) |
1136 | { |
1636 | { |
1137 | struct ev_periodic *w = periodics [i]; |
1637 | ev_periodic *w = (ev_periodic *)periodics [i]; |
1138 | |
1638 | |
1139 | if (w->reschedule_cb) |
1639 | if (w->reschedule_cb) |
1140 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
1640 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1141 | else if (w->interval) |
1641 | else if (w->interval) |
1142 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
1642 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1143 | } |
1643 | } |
1144 | |
1644 | |
1145 | /* now rebuild the heap */ |
1645 | /* now rebuild the heap */ |
1146 | for (i = periodiccnt >> 1; i--; ) |
1646 | for (i = periodiccnt >> 1; --i; ) |
1147 | downheap ((WT *)periodics, periodiccnt, i); |
1647 | downheap (periodics, periodiccnt, i + HEAP0); |
1148 | } |
1648 | } |
1149 | #endif |
1649 | #endif |
1150 | |
1650 | |
1151 | inline int |
1651 | void inline_speed |
1152 | time_update_monotonic (EV_P) |
1652 | time_update (EV_P_ ev_tstamp max_block) |
1153 | { |
1653 | { |
|
|
1654 | int i; |
|
|
1655 | |
|
|
1656 | #if EV_USE_MONOTONIC |
|
|
1657 | if (expect_true (have_monotonic)) |
|
|
1658 | { |
|
|
1659 | ev_tstamp odiff = rtmn_diff; |
|
|
1660 | |
1154 | mn_now = get_clock (); |
1661 | mn_now = get_clock (); |
1155 | |
1662 | |
|
|
1663 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1664 | /* interpolate in the meantime */ |
1156 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1665 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1157 | { |
1666 | { |
1158 | ev_rt_now = rtmn_diff + mn_now; |
1667 | ev_rt_now = rtmn_diff + mn_now; |
1159 | return 0; |
1668 | return; |
1160 | } |
1669 | } |
1161 | else |
1670 | |
1162 | { |
|
|
1163 | now_floor = mn_now; |
1671 | now_floor = mn_now; |
1164 | ev_rt_now = ev_time (); |
1672 | ev_rt_now = ev_time (); |
1165 | return 1; |
|
|
1166 | } |
|
|
1167 | } |
|
|
1168 | |
1673 | |
1169 | inline void |
1674 | /* loop a few times, before making important decisions. |
1170 | time_update (EV_P) |
1675 | * on the choice of "4": one iteration isn't enough, |
1171 | { |
1676 | * in case we get preempted during the calls to |
1172 | int i; |
1677 | * ev_time and get_clock. a second call is almost guaranteed |
1173 | |
1678 | * to succeed in that case, though. and looping a few more times |
1174 | #if EV_USE_MONOTONIC |
1679 | * doesn't hurt either as we only do this on time-jumps or |
1175 | if (expect_true (have_monotonic)) |
1680 | * in the unlikely event of having been preempted here. |
1176 | { |
1681 | */ |
1177 | if (time_update_monotonic (EV_A)) |
1682 | for (i = 4; --i; ) |
1178 | { |
1683 | { |
1179 | ev_tstamp odiff = rtmn_diff; |
|
|
1180 | |
|
|
1181 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1182 | { |
|
|
1183 | rtmn_diff = ev_rt_now - mn_now; |
1684 | rtmn_diff = ev_rt_now - mn_now; |
1184 | |
1685 | |
1185 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
1686 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1186 | return; /* all is well */ |
1687 | return; /* all is well */ |
1187 | |
1688 | |
1188 | ev_rt_now = ev_time (); |
1689 | ev_rt_now = ev_time (); |
1189 | mn_now = get_clock (); |
1690 | mn_now = get_clock (); |
1190 | now_floor = mn_now; |
1691 | now_floor = mn_now; |
1191 | } |
1692 | } |
1192 | |
1693 | |
1193 | # if EV_PERIODICS |
1694 | # if EV_PERIODIC_ENABLE |
|
|
1695 | periodics_reschedule (EV_A); |
|
|
1696 | # endif |
|
|
1697 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1698 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1699 | } |
|
|
1700 | else |
|
|
1701 | #endif |
|
|
1702 | { |
|
|
1703 | ev_rt_now = ev_time (); |
|
|
1704 | |
|
|
1705 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1706 | { |
|
|
1707 | #if EV_PERIODIC_ENABLE |
1194 | periodics_reschedule (EV_A); |
1708 | periodics_reschedule (EV_A); |
1195 | # endif |
1709 | #endif |
1196 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1710 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
1197 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1711 | for (i = 1; i <= timercnt; ++i) |
|
|
1712 | ev_at (timers [i]) += ev_rt_now - mn_now; |
1198 | } |
1713 | } |
1199 | } |
|
|
1200 | else |
|
|
1201 | #endif |
|
|
1202 | { |
|
|
1203 | ev_rt_now = ev_time (); |
|
|
1204 | |
|
|
1205 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1206 | { |
|
|
1207 | #if EV_PERIODICS |
|
|
1208 | periodics_reschedule (EV_A); |
|
|
1209 | #endif |
|
|
1210 | |
|
|
1211 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1212 | for (i = 0; i < timercnt; ++i) |
|
|
1213 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1214 | } |
|
|
1215 | |
1714 | |
1216 | mn_now = ev_rt_now; |
1715 | mn_now = ev_rt_now; |
1217 | } |
1716 | } |
1218 | } |
1717 | } |
1219 | |
1718 | |
… | |
… | |
1232 | static int loop_done; |
1731 | static int loop_done; |
1233 | |
1732 | |
1234 | void |
1733 | void |
1235 | ev_loop (EV_P_ int flags) |
1734 | ev_loop (EV_P_ int flags) |
1236 | { |
1735 | { |
1237 | double block; |
1736 | loop_done = EVUNLOOP_CANCEL; |
1238 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
1239 | |
1737 | |
1240 | while (activecnt) |
1738 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
1739 | |
|
|
1740 | do |
1241 | { |
1741 | { |
|
|
1742 | #ifndef _WIN32 |
|
|
1743 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1744 | if (expect_false (getpid () != curpid)) |
|
|
1745 | { |
|
|
1746 | curpid = getpid (); |
|
|
1747 | postfork = 1; |
|
|
1748 | } |
|
|
1749 | #endif |
|
|
1750 | |
|
|
1751 | #if EV_FORK_ENABLE |
|
|
1752 | /* we might have forked, so queue fork handlers */ |
|
|
1753 | if (expect_false (postfork)) |
|
|
1754 | if (forkcnt) |
|
|
1755 | { |
|
|
1756 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1757 | call_pending (EV_A); |
|
|
1758 | } |
|
|
1759 | #endif |
|
|
1760 | |
1242 | /* queue check watchers (and execute them) */ |
1761 | /* queue prepare watchers (and execute them) */ |
1243 | if (expect_false (preparecnt)) |
1762 | if (expect_false (preparecnt)) |
1244 | { |
1763 | { |
1245 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1764 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1246 | call_pending (EV_A); |
1765 | call_pending (EV_A); |
1247 | } |
1766 | } |
1248 | |
1767 | |
|
|
1768 | if (expect_false (!activecnt)) |
|
|
1769 | break; |
|
|
1770 | |
1249 | /* we might have forked, so reify kernel state if necessary */ |
1771 | /* we might have forked, so reify kernel state if necessary */ |
1250 | if (expect_false (postfork)) |
1772 | if (expect_false (postfork)) |
1251 | loop_fork (EV_A); |
1773 | loop_fork (EV_A); |
1252 | |
1774 | |
1253 | /* update fd-related kernel structures */ |
1775 | /* update fd-related kernel structures */ |
1254 | fd_reify (EV_A); |
1776 | fd_reify (EV_A); |
1255 | |
1777 | |
1256 | /* calculate blocking time */ |
1778 | /* calculate blocking time */ |
|
|
1779 | { |
|
|
1780 | ev_tstamp waittime = 0.; |
|
|
1781 | ev_tstamp sleeptime = 0.; |
1257 | |
1782 | |
1258 | /* we only need this for !monotonic clock or timers, but as we basically |
1783 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1259 | always have timers, we just calculate it always */ |
|
|
1260 | #if EV_USE_MONOTONIC |
|
|
1261 | if (expect_true (have_monotonic)) |
|
|
1262 | time_update_monotonic (EV_A); |
|
|
1263 | else |
|
|
1264 | #endif |
|
|
1265 | { |
1784 | { |
1266 | ev_rt_now = ev_time (); |
1785 | /* update time to cancel out callback processing overhead */ |
1267 | mn_now = ev_rt_now; |
1786 | time_update (EV_A_ 1e100); |
1268 | } |
|
|
1269 | |
1787 | |
1270 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
1271 | block = 0.; |
|
|
1272 | else |
|
|
1273 | { |
|
|
1274 | block = MAX_BLOCKTIME; |
1788 | waittime = MAX_BLOCKTIME; |
1275 | |
1789 | |
1276 | if (timercnt) |
1790 | if (timercnt) |
1277 | { |
1791 | { |
1278 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1792 | ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; |
1279 | if (block > to) block = to; |
1793 | if (waittime > to) waittime = to; |
1280 | } |
1794 | } |
1281 | |
1795 | |
1282 | #if EV_PERIODICS |
1796 | #if EV_PERIODIC_ENABLE |
1283 | if (periodiccnt) |
1797 | if (periodiccnt) |
1284 | { |
1798 | { |
1285 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1799 | ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1286 | if (block > to) block = to; |
1800 | if (waittime > to) waittime = to; |
1287 | } |
1801 | } |
1288 | #endif |
1802 | #endif |
1289 | |
1803 | |
1290 | if (expect_false (block < 0.)) block = 0.; |
1804 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1805 | waittime = timeout_blocktime; |
|
|
1806 | |
|
|
1807 | sleeptime = waittime - backend_fudge; |
|
|
1808 | |
|
|
1809 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1810 | sleeptime = io_blocktime; |
|
|
1811 | |
|
|
1812 | if (sleeptime) |
|
|
1813 | { |
|
|
1814 | ev_sleep (sleeptime); |
|
|
1815 | waittime -= sleeptime; |
|
|
1816 | } |
1291 | } |
1817 | } |
1292 | |
1818 | |
|
|
1819 | ++loop_count; |
1293 | backend_poll (EV_A_ block); |
1820 | backend_poll (EV_A_ waittime); |
1294 | |
1821 | |
1295 | /* update ev_rt_now, do magic */ |
1822 | /* update ev_rt_now, do magic */ |
1296 | time_update (EV_A); |
1823 | time_update (EV_A_ waittime + sleeptime); |
|
|
1824 | } |
1297 | |
1825 | |
1298 | /* queue pending timers and reschedule them */ |
1826 | /* queue pending timers and reschedule them */ |
1299 | timers_reify (EV_A); /* relative timers called last */ |
1827 | timers_reify (EV_A); /* relative timers called last */ |
1300 | #if EV_PERIODICS |
1828 | #if EV_PERIODIC_ENABLE |
1301 | periodics_reify (EV_A); /* absolute timers called first */ |
1829 | periodics_reify (EV_A); /* absolute timers called first */ |
1302 | #endif |
1830 | #endif |
1303 | |
1831 | |
|
|
1832 | #if EV_IDLE_ENABLE |
1304 | /* queue idle watchers unless io or timers are pending */ |
1833 | /* queue idle watchers unless other events are pending */ |
1305 | if (idlecnt && !any_pending (EV_A)) |
1834 | idle_reify (EV_A); |
1306 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
1835 | #endif |
1307 | |
1836 | |
1308 | /* queue check watchers, to be executed first */ |
1837 | /* queue check watchers, to be executed first */ |
1309 | if (expect_false (checkcnt)) |
1838 | if (expect_false (checkcnt)) |
1310 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1839 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1311 | |
1840 | |
1312 | call_pending (EV_A); |
1841 | call_pending (EV_A); |
1313 | |
|
|
1314 | if (expect_false (loop_done)) |
|
|
1315 | break; |
|
|
1316 | } |
1842 | } |
|
|
1843 | while (expect_true ( |
|
|
1844 | activecnt |
|
|
1845 | && !loop_done |
|
|
1846 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1847 | )); |
1317 | |
1848 | |
1318 | if (loop_done != 2) |
1849 | if (loop_done == EVUNLOOP_ONE) |
1319 | loop_done = 0; |
1850 | loop_done = EVUNLOOP_CANCEL; |
1320 | } |
1851 | } |
1321 | |
1852 | |
1322 | void |
1853 | void |
1323 | ev_unloop (EV_P_ int how) |
1854 | ev_unloop (EV_P_ int how) |
1324 | { |
1855 | { |
1325 | loop_done = how; |
1856 | loop_done = how; |
1326 | } |
1857 | } |
1327 | |
1858 | |
1328 | /*****************************************************************************/ |
1859 | /*****************************************************************************/ |
1329 | |
1860 | |
1330 | inline void |
1861 | void inline_size |
1331 | wlist_add (WL *head, WL elem) |
1862 | wlist_add (WL *head, WL elem) |
1332 | { |
1863 | { |
1333 | elem->next = *head; |
1864 | elem->next = *head; |
1334 | *head = elem; |
1865 | *head = elem; |
1335 | } |
1866 | } |
1336 | |
1867 | |
1337 | inline void |
1868 | void inline_size |
1338 | wlist_del (WL *head, WL elem) |
1869 | wlist_del (WL *head, WL elem) |
1339 | { |
1870 | { |
1340 | while (*head) |
1871 | while (*head) |
1341 | { |
1872 | { |
1342 | if (*head == elem) |
1873 | if (*head == elem) |
… | |
… | |
1347 | |
1878 | |
1348 | head = &(*head)->next; |
1879 | head = &(*head)->next; |
1349 | } |
1880 | } |
1350 | } |
1881 | } |
1351 | |
1882 | |
1352 | inline void |
1883 | void inline_speed |
1353 | ev_clear_pending (EV_P_ W w) |
1884 | clear_pending (EV_P_ W w) |
1354 | { |
1885 | { |
1355 | if (w->pending) |
1886 | if (w->pending) |
1356 | { |
1887 | { |
1357 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1888 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1358 | w->pending = 0; |
1889 | w->pending = 0; |
1359 | } |
1890 | } |
1360 | } |
1891 | } |
1361 | |
1892 | |
1362 | inline void |
1893 | int |
|
|
1894 | ev_clear_pending (EV_P_ void *w) |
|
|
1895 | { |
|
|
1896 | W w_ = (W)w; |
|
|
1897 | int pending = w_->pending; |
|
|
1898 | |
|
|
1899 | if (expect_true (pending)) |
|
|
1900 | { |
|
|
1901 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1902 | w_->pending = 0; |
|
|
1903 | p->w = 0; |
|
|
1904 | return p->events; |
|
|
1905 | } |
|
|
1906 | else |
|
|
1907 | return 0; |
|
|
1908 | } |
|
|
1909 | |
|
|
1910 | void inline_size |
|
|
1911 | pri_adjust (EV_P_ W w) |
|
|
1912 | { |
|
|
1913 | int pri = w->priority; |
|
|
1914 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1915 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1916 | w->priority = pri; |
|
|
1917 | } |
|
|
1918 | |
|
|
1919 | void inline_speed |
1363 | ev_start (EV_P_ W w, int active) |
1920 | ev_start (EV_P_ W w, int active) |
1364 | { |
1921 | { |
1365 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
1922 | pri_adjust (EV_A_ w); |
1366 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1367 | |
|
|
1368 | w->active = active; |
1923 | w->active = active; |
1369 | ev_ref (EV_A); |
1924 | ev_ref (EV_A); |
1370 | } |
1925 | } |
1371 | |
1926 | |
1372 | inline void |
1927 | void inline_size |
1373 | ev_stop (EV_P_ W w) |
1928 | ev_stop (EV_P_ W w) |
1374 | { |
1929 | { |
1375 | ev_unref (EV_A); |
1930 | ev_unref (EV_A); |
1376 | w->active = 0; |
1931 | w->active = 0; |
1377 | } |
1932 | } |
1378 | |
1933 | |
1379 | /*****************************************************************************/ |
1934 | /*****************************************************************************/ |
1380 | |
1935 | |
1381 | void |
1936 | void noinline |
1382 | ev_io_start (EV_P_ struct ev_io *w) |
1937 | ev_io_start (EV_P_ ev_io *w) |
1383 | { |
1938 | { |
1384 | int fd = w->fd; |
1939 | int fd = w->fd; |
1385 | |
1940 | |
1386 | if (expect_false (ev_is_active (w))) |
1941 | if (expect_false (ev_is_active (w))) |
1387 | return; |
1942 | return; |
1388 | |
1943 | |
1389 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1944 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1390 | |
1945 | |
1391 | ev_start (EV_A_ (W)w, 1); |
1946 | ev_start (EV_A_ (W)w, 1); |
1392 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1947 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1393 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1948 | wlist_add (&anfds[fd].head, (WL)w); |
1394 | |
1949 | |
1395 | fd_change (EV_A_ fd); |
1950 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1951 | w->events &= ~EV_IOFDSET; |
1396 | } |
1952 | } |
1397 | |
1953 | |
1398 | void |
1954 | void noinline |
1399 | ev_io_stop (EV_P_ struct ev_io *w) |
1955 | ev_io_stop (EV_P_ ev_io *w) |
1400 | { |
1956 | { |
1401 | ev_clear_pending (EV_A_ (W)w); |
1957 | clear_pending (EV_A_ (W)w); |
1402 | if (expect_false (!ev_is_active (w))) |
1958 | if (expect_false (!ev_is_active (w))) |
1403 | return; |
1959 | return; |
1404 | |
1960 | |
1405 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1961 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1406 | |
1962 | |
1407 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1963 | wlist_del (&anfds[w->fd].head, (WL)w); |
1408 | ev_stop (EV_A_ (W)w); |
1964 | ev_stop (EV_A_ (W)w); |
1409 | |
1965 | |
1410 | fd_change (EV_A_ w->fd); |
1966 | fd_change (EV_A_ w->fd, 1); |
1411 | } |
1967 | } |
1412 | |
1968 | |
1413 | void |
1969 | void noinline |
1414 | ev_timer_start (EV_P_ struct ev_timer *w) |
1970 | ev_timer_start (EV_P_ ev_timer *w) |
1415 | { |
1971 | { |
1416 | if (expect_false (ev_is_active (w))) |
1972 | if (expect_false (ev_is_active (w))) |
1417 | return; |
1973 | return; |
1418 | |
1974 | |
1419 | ((WT)w)->at += mn_now; |
1975 | ev_at (w) += mn_now; |
1420 | |
1976 | |
1421 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1977 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1422 | |
1978 | |
1423 | ev_start (EV_A_ (W)w, ++timercnt); |
1979 | ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
1424 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
1980 | array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); |
1425 | timers [timercnt - 1] = w; |
1981 | timers [ev_active (w)] = (WT)w; |
1426 | upheap ((WT *)timers, timercnt - 1); |
1982 | upheap (timers, ev_active (w)); |
1427 | |
1983 | |
1428 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
1984 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ |
1429 | } |
1985 | } |
1430 | |
1986 | |
1431 | void |
1987 | void noinline |
1432 | ev_timer_stop (EV_P_ struct ev_timer *w) |
1988 | ev_timer_stop (EV_P_ ev_timer *w) |
1433 | { |
1989 | { |
1434 | ev_clear_pending (EV_A_ (W)w); |
1990 | clear_pending (EV_A_ (W)w); |
1435 | if (expect_false (!ev_is_active (w))) |
1991 | if (expect_false (!ev_is_active (w))) |
1436 | return; |
1992 | return; |
1437 | |
1993 | |
|
|
1994 | { |
|
|
1995 | int active = ev_active (w); |
|
|
1996 | |
1438 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
1997 | assert (("internal timer heap corruption", timers [active] == (WT)w)); |
1439 | |
1998 | |
1440 | if (expect_true (((W)w)->active < timercnt--)) |
1999 | if (expect_true (active < timercnt + HEAP0 - 1)) |
1441 | { |
2000 | { |
1442 | timers [((W)w)->active - 1] = timers [timercnt]; |
2001 | timers [active] = timers [timercnt + HEAP0 - 1]; |
1443 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2002 | adjustheap (timers, timercnt, active); |
1444 | } |
2003 | } |
1445 | |
2004 | |
1446 | ((WT)w)->at -= mn_now; |
2005 | --timercnt; |
|
|
2006 | } |
|
|
2007 | |
|
|
2008 | ev_at (w) -= mn_now; |
1447 | |
2009 | |
1448 | ev_stop (EV_A_ (W)w); |
2010 | ev_stop (EV_A_ (W)w); |
1449 | } |
2011 | } |
1450 | |
2012 | |
1451 | void |
2013 | void noinline |
1452 | ev_timer_again (EV_P_ struct ev_timer *w) |
2014 | ev_timer_again (EV_P_ ev_timer *w) |
1453 | { |
2015 | { |
1454 | if (ev_is_active (w)) |
2016 | if (ev_is_active (w)) |
1455 | { |
2017 | { |
1456 | if (w->repeat) |
2018 | if (w->repeat) |
1457 | { |
2019 | { |
1458 | ((WT)w)->at = mn_now + w->repeat; |
2020 | ev_at (w) = mn_now + w->repeat; |
1459 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2021 | adjustheap (timers, timercnt, ev_active (w)); |
1460 | } |
2022 | } |
1461 | else |
2023 | else |
1462 | ev_timer_stop (EV_A_ w); |
2024 | ev_timer_stop (EV_A_ w); |
1463 | } |
2025 | } |
1464 | else if (w->repeat) |
2026 | else if (w->repeat) |
1465 | { |
2027 | { |
1466 | w->at = w->repeat; |
2028 | ev_at (w) = w->repeat; |
1467 | ev_timer_start (EV_A_ w); |
2029 | ev_timer_start (EV_A_ w); |
1468 | } |
2030 | } |
1469 | } |
2031 | } |
1470 | |
2032 | |
1471 | #if EV_PERIODICS |
2033 | #if EV_PERIODIC_ENABLE |
1472 | void |
2034 | void noinline |
1473 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2035 | ev_periodic_start (EV_P_ ev_periodic *w) |
1474 | { |
2036 | { |
1475 | if (expect_false (ev_is_active (w))) |
2037 | if (expect_false (ev_is_active (w))) |
1476 | return; |
2038 | return; |
1477 | |
2039 | |
1478 | if (w->reschedule_cb) |
2040 | if (w->reschedule_cb) |
1479 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2041 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1480 | else if (w->interval) |
2042 | else if (w->interval) |
1481 | { |
2043 | { |
1482 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2044 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1483 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2045 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1484 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2046 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1485 | } |
2047 | } |
|
|
2048 | else |
|
|
2049 | ev_at (w) = w->offset; |
1486 | |
2050 | |
1487 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2051 | ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
1488 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
2052 | array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); |
1489 | periodics [periodiccnt - 1] = w; |
2053 | periodics [ev_active (w)] = (WT)w; |
1490 | upheap ((WT *)periodics, periodiccnt - 1); |
2054 | upheap (periodics, ev_active (w)); |
1491 | |
2055 | |
1492 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2056 | /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ |
1493 | } |
2057 | } |
1494 | |
2058 | |
1495 | void |
2059 | void noinline |
1496 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2060 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1497 | { |
2061 | { |
1498 | ev_clear_pending (EV_A_ (W)w); |
2062 | clear_pending (EV_A_ (W)w); |
1499 | if (expect_false (!ev_is_active (w))) |
2063 | if (expect_false (!ev_is_active (w))) |
1500 | return; |
2064 | return; |
1501 | |
2065 | |
|
|
2066 | { |
|
|
2067 | int active = ev_active (w); |
|
|
2068 | |
1502 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2069 | assert (("internal periodic heap corruption", periodics [active] == (WT)w)); |
1503 | |
2070 | |
1504 | if (expect_true (((W)w)->active < periodiccnt--)) |
2071 | if (expect_true (active < periodiccnt + HEAP0 - 1)) |
1505 | { |
2072 | { |
1506 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2073 | periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
1507 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2074 | adjustheap (periodics, periodiccnt, active); |
1508 | } |
2075 | } |
|
|
2076 | |
|
|
2077 | --periodiccnt; |
|
|
2078 | } |
1509 | |
2079 | |
1510 | ev_stop (EV_A_ (W)w); |
2080 | ev_stop (EV_A_ (W)w); |
1511 | } |
2081 | } |
1512 | |
2082 | |
1513 | void |
2083 | void noinline |
1514 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
2084 | ev_periodic_again (EV_P_ ev_periodic *w) |
1515 | { |
2085 | { |
1516 | /* TODO: use adjustheap and recalculation */ |
2086 | /* TODO: use adjustheap and recalculation */ |
1517 | ev_periodic_stop (EV_A_ w); |
2087 | ev_periodic_stop (EV_A_ w); |
1518 | ev_periodic_start (EV_A_ w); |
2088 | ev_periodic_start (EV_A_ w); |
1519 | } |
2089 | } |
1520 | #endif |
2090 | #endif |
1521 | |
2091 | |
1522 | void |
2092 | #ifndef SA_RESTART |
1523 | ev_idle_start (EV_P_ struct ev_idle *w) |
2093 | # define SA_RESTART 0 |
|
|
2094 | #endif |
|
|
2095 | |
|
|
2096 | void noinline |
|
|
2097 | ev_signal_start (EV_P_ ev_signal *w) |
1524 | { |
2098 | { |
|
|
2099 | #if EV_MULTIPLICITY |
|
|
2100 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2101 | #endif |
1525 | if (expect_false (ev_is_active (w))) |
2102 | if (expect_false (ev_is_active (w))) |
1526 | return; |
2103 | return; |
1527 | |
2104 | |
1528 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1529 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1530 | idles [idlecnt - 1] = w; |
|
|
1531 | } |
|
|
1532 | |
|
|
1533 | void |
|
|
1534 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1535 | { |
|
|
1536 | ev_clear_pending (EV_A_ (W)w); |
|
|
1537 | if (expect_false (!ev_is_active (w))) |
|
|
1538 | return; |
|
|
1539 | |
|
|
1540 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1541 | ev_stop (EV_A_ (W)w); |
|
|
1542 | } |
|
|
1543 | |
|
|
1544 | void |
|
|
1545 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1546 | { |
|
|
1547 | if (expect_false (ev_is_active (w))) |
|
|
1548 | return; |
|
|
1549 | |
|
|
1550 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1551 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1552 | prepares [preparecnt - 1] = w; |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | void |
|
|
1556 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1557 | { |
|
|
1558 | ev_clear_pending (EV_A_ (W)w); |
|
|
1559 | if (expect_false (!ev_is_active (w))) |
|
|
1560 | return; |
|
|
1561 | |
|
|
1562 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1563 | ev_stop (EV_A_ (W)w); |
|
|
1564 | } |
|
|
1565 | |
|
|
1566 | void |
|
|
1567 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1568 | { |
|
|
1569 | if (expect_false (ev_is_active (w))) |
|
|
1570 | return; |
|
|
1571 | |
|
|
1572 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1573 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1574 | checks [checkcnt - 1] = w; |
|
|
1575 | } |
|
|
1576 | |
|
|
1577 | void |
|
|
1578 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1579 | { |
|
|
1580 | ev_clear_pending (EV_A_ (W)w); |
|
|
1581 | if (expect_false (!ev_is_active (w))) |
|
|
1582 | return; |
|
|
1583 | |
|
|
1584 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1585 | ev_stop (EV_A_ (W)w); |
|
|
1586 | } |
|
|
1587 | |
|
|
1588 | #ifndef SA_RESTART |
|
|
1589 | # define SA_RESTART 0 |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | void |
|
|
1593 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1594 | { |
|
|
1595 | #if EV_MULTIPLICITY |
|
|
1596 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1597 | #endif |
|
|
1598 | if (expect_false (ev_is_active (w))) |
|
|
1599 | return; |
|
|
1600 | |
|
|
1601 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2105 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1602 | |
2106 | |
|
|
2107 | evpipe_init (EV_A); |
|
|
2108 | |
|
|
2109 | { |
|
|
2110 | #ifndef _WIN32 |
|
|
2111 | sigset_t full, prev; |
|
|
2112 | sigfillset (&full); |
|
|
2113 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2114 | #endif |
|
|
2115 | |
|
|
2116 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2117 | |
|
|
2118 | #ifndef _WIN32 |
|
|
2119 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2120 | #endif |
|
|
2121 | } |
|
|
2122 | |
1603 | ev_start (EV_A_ (W)w, 1); |
2123 | ev_start (EV_A_ (W)w, 1); |
1604 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1605 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2124 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1606 | |
2125 | |
1607 | if (!((WL)w)->next) |
2126 | if (!((WL)w)->next) |
1608 | { |
2127 | { |
1609 | #if _WIN32 |
2128 | #if _WIN32 |
1610 | signal (w->signum, sighandler); |
2129 | signal (w->signum, ev_sighandler); |
1611 | #else |
2130 | #else |
1612 | struct sigaction sa; |
2131 | struct sigaction sa; |
1613 | sa.sa_handler = sighandler; |
2132 | sa.sa_handler = ev_sighandler; |
1614 | sigfillset (&sa.sa_mask); |
2133 | sigfillset (&sa.sa_mask); |
1615 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2134 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1616 | sigaction (w->signum, &sa, 0); |
2135 | sigaction (w->signum, &sa, 0); |
1617 | #endif |
2136 | #endif |
1618 | } |
2137 | } |
1619 | } |
2138 | } |
1620 | |
2139 | |
1621 | void |
2140 | void noinline |
1622 | ev_signal_stop (EV_P_ struct ev_signal *w) |
2141 | ev_signal_stop (EV_P_ ev_signal *w) |
1623 | { |
2142 | { |
1624 | ev_clear_pending (EV_A_ (W)w); |
2143 | clear_pending (EV_A_ (W)w); |
1625 | if (expect_false (!ev_is_active (w))) |
2144 | if (expect_false (!ev_is_active (w))) |
1626 | return; |
2145 | return; |
1627 | |
2146 | |
1628 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2147 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1629 | ev_stop (EV_A_ (W)w); |
2148 | ev_stop (EV_A_ (W)w); |
1630 | |
2149 | |
1631 | if (!signals [w->signum - 1].head) |
2150 | if (!signals [w->signum - 1].head) |
1632 | signal (w->signum, SIG_DFL); |
2151 | signal (w->signum, SIG_DFL); |
1633 | } |
2152 | } |
1634 | |
2153 | |
1635 | void |
2154 | void |
1636 | ev_child_start (EV_P_ struct ev_child *w) |
2155 | ev_child_start (EV_P_ ev_child *w) |
1637 | { |
2156 | { |
1638 | #if EV_MULTIPLICITY |
2157 | #if EV_MULTIPLICITY |
1639 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2158 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1640 | #endif |
2159 | #endif |
1641 | if (expect_false (ev_is_active (w))) |
2160 | if (expect_false (ev_is_active (w))) |
1642 | return; |
2161 | return; |
1643 | |
2162 | |
1644 | ev_start (EV_A_ (W)w, 1); |
2163 | ev_start (EV_A_ (W)w, 1); |
1645 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2164 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1646 | } |
2165 | } |
1647 | |
2166 | |
1648 | void |
2167 | void |
1649 | ev_child_stop (EV_P_ struct ev_child *w) |
2168 | ev_child_stop (EV_P_ ev_child *w) |
1650 | { |
2169 | { |
1651 | ev_clear_pending (EV_A_ (W)w); |
2170 | clear_pending (EV_A_ (W)w); |
1652 | if (expect_false (!ev_is_active (w))) |
2171 | if (expect_false (!ev_is_active (w))) |
1653 | return; |
2172 | return; |
1654 | |
2173 | |
1655 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2174 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1656 | ev_stop (EV_A_ (W)w); |
2175 | ev_stop (EV_A_ (W)w); |
1657 | } |
2176 | } |
1658 | |
2177 | |
|
|
2178 | #if EV_STAT_ENABLE |
|
|
2179 | |
|
|
2180 | # ifdef _WIN32 |
|
|
2181 | # undef lstat |
|
|
2182 | # define lstat(a,b) _stati64 (a,b) |
|
|
2183 | # endif |
|
|
2184 | |
|
|
2185 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2186 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2187 | |
|
|
2188 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2189 | |
|
|
2190 | #if EV_USE_INOTIFY |
|
|
2191 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2192 | |
|
|
2193 | static void noinline |
|
|
2194 | infy_add (EV_P_ ev_stat *w) |
|
|
2195 | { |
|
|
2196 | 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); |
|
|
2197 | |
|
|
2198 | if (w->wd < 0) |
|
|
2199 | { |
|
|
2200 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2201 | |
|
|
2202 | /* monitor some parent directory for speedup hints */ |
|
|
2203 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2204 | /* but an efficiency issue only */ |
|
|
2205 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2206 | { |
|
|
2207 | char path [4096]; |
|
|
2208 | strcpy (path, w->path); |
|
|
2209 | |
|
|
2210 | do |
|
|
2211 | { |
|
|
2212 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2213 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2214 | |
|
|
2215 | char *pend = strrchr (path, '/'); |
|
|
2216 | |
|
|
2217 | if (!pend) |
|
|
2218 | break; /* whoops, no '/', complain to your admin */ |
|
|
2219 | |
|
|
2220 | *pend = 0; |
|
|
2221 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2222 | } |
|
|
2223 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2224 | } |
|
|
2225 | } |
|
|
2226 | else |
|
|
2227 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2228 | |
|
|
2229 | if (w->wd >= 0) |
|
|
2230 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2231 | } |
|
|
2232 | |
|
|
2233 | static void noinline |
|
|
2234 | infy_del (EV_P_ ev_stat *w) |
|
|
2235 | { |
|
|
2236 | int slot; |
|
|
2237 | int wd = w->wd; |
|
|
2238 | |
|
|
2239 | if (wd < 0) |
|
|
2240 | return; |
|
|
2241 | |
|
|
2242 | w->wd = -2; |
|
|
2243 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2244 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2245 | |
|
|
2246 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2247 | inotify_rm_watch (fs_fd, wd); |
|
|
2248 | } |
|
|
2249 | |
|
|
2250 | static void noinline |
|
|
2251 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2252 | { |
|
|
2253 | if (slot < 0) |
|
|
2254 | /* overflow, need to check for all hahs slots */ |
|
|
2255 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2256 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2257 | else |
|
|
2258 | { |
|
|
2259 | WL w_; |
|
|
2260 | |
|
|
2261 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2262 | { |
|
|
2263 | ev_stat *w = (ev_stat *)w_; |
|
|
2264 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2265 | |
|
|
2266 | if (w->wd == wd || wd == -1) |
|
|
2267 | { |
|
|
2268 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2269 | { |
|
|
2270 | w->wd = -1; |
|
|
2271 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2272 | } |
|
|
2273 | |
|
|
2274 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2275 | } |
|
|
2276 | } |
|
|
2277 | } |
|
|
2278 | } |
|
|
2279 | |
|
|
2280 | static void |
|
|
2281 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2282 | { |
|
|
2283 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2284 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2285 | int ofs; |
|
|
2286 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2287 | |
|
|
2288 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2289 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2290 | } |
|
|
2291 | |
|
|
2292 | void inline_size |
|
|
2293 | infy_init (EV_P) |
|
|
2294 | { |
|
|
2295 | if (fs_fd != -2) |
|
|
2296 | return; |
|
|
2297 | |
|
|
2298 | fs_fd = inotify_init (); |
|
|
2299 | |
|
|
2300 | if (fs_fd >= 0) |
|
|
2301 | { |
|
|
2302 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2303 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2304 | ev_io_start (EV_A_ &fs_w); |
|
|
2305 | } |
|
|
2306 | } |
|
|
2307 | |
|
|
2308 | void inline_size |
|
|
2309 | infy_fork (EV_P) |
|
|
2310 | { |
|
|
2311 | int slot; |
|
|
2312 | |
|
|
2313 | if (fs_fd < 0) |
|
|
2314 | return; |
|
|
2315 | |
|
|
2316 | close (fs_fd); |
|
|
2317 | fs_fd = inotify_init (); |
|
|
2318 | |
|
|
2319 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2320 | { |
|
|
2321 | WL w_ = fs_hash [slot].head; |
|
|
2322 | fs_hash [slot].head = 0; |
|
|
2323 | |
|
|
2324 | while (w_) |
|
|
2325 | { |
|
|
2326 | ev_stat *w = (ev_stat *)w_; |
|
|
2327 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2328 | |
|
|
2329 | w->wd = -1; |
|
|
2330 | |
|
|
2331 | if (fs_fd >= 0) |
|
|
2332 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2333 | else |
|
|
2334 | ev_timer_start (EV_A_ &w->timer); |
|
|
2335 | } |
|
|
2336 | |
|
|
2337 | } |
|
|
2338 | } |
|
|
2339 | |
|
|
2340 | #endif |
|
|
2341 | |
|
|
2342 | void |
|
|
2343 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2344 | { |
|
|
2345 | if (lstat (w->path, &w->attr) < 0) |
|
|
2346 | w->attr.st_nlink = 0; |
|
|
2347 | else if (!w->attr.st_nlink) |
|
|
2348 | w->attr.st_nlink = 1; |
|
|
2349 | } |
|
|
2350 | |
|
|
2351 | static void noinline |
|
|
2352 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2353 | { |
|
|
2354 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2355 | |
|
|
2356 | /* we copy this here each the time so that */ |
|
|
2357 | /* prev has the old value when the callback gets invoked */ |
|
|
2358 | w->prev = w->attr; |
|
|
2359 | ev_stat_stat (EV_A_ w); |
|
|
2360 | |
|
|
2361 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2362 | if ( |
|
|
2363 | w->prev.st_dev != w->attr.st_dev |
|
|
2364 | || w->prev.st_ino != w->attr.st_ino |
|
|
2365 | || w->prev.st_mode != w->attr.st_mode |
|
|
2366 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2367 | || w->prev.st_uid != w->attr.st_uid |
|
|
2368 | || w->prev.st_gid != w->attr.st_gid |
|
|
2369 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2370 | || w->prev.st_size != w->attr.st_size |
|
|
2371 | || w->prev.st_atime != w->attr.st_atime |
|
|
2372 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2373 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2374 | ) { |
|
|
2375 | #if EV_USE_INOTIFY |
|
|
2376 | infy_del (EV_A_ w); |
|
|
2377 | infy_add (EV_A_ w); |
|
|
2378 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2379 | #endif |
|
|
2380 | |
|
|
2381 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2382 | } |
|
|
2383 | } |
|
|
2384 | |
|
|
2385 | void |
|
|
2386 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2387 | { |
|
|
2388 | if (expect_false (ev_is_active (w))) |
|
|
2389 | return; |
|
|
2390 | |
|
|
2391 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2392 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2393 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2394 | |
|
|
2395 | ev_stat_stat (EV_A_ w); |
|
|
2396 | |
|
|
2397 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2398 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2399 | |
|
|
2400 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2401 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2402 | |
|
|
2403 | #if EV_USE_INOTIFY |
|
|
2404 | infy_init (EV_A); |
|
|
2405 | |
|
|
2406 | if (fs_fd >= 0) |
|
|
2407 | infy_add (EV_A_ w); |
|
|
2408 | else |
|
|
2409 | #endif |
|
|
2410 | ev_timer_start (EV_A_ &w->timer); |
|
|
2411 | |
|
|
2412 | ev_start (EV_A_ (W)w, 1); |
|
|
2413 | } |
|
|
2414 | |
|
|
2415 | void |
|
|
2416 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2417 | { |
|
|
2418 | clear_pending (EV_A_ (W)w); |
|
|
2419 | if (expect_false (!ev_is_active (w))) |
|
|
2420 | return; |
|
|
2421 | |
|
|
2422 | #if EV_USE_INOTIFY |
|
|
2423 | infy_del (EV_A_ w); |
|
|
2424 | #endif |
|
|
2425 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2426 | |
|
|
2427 | ev_stop (EV_A_ (W)w); |
|
|
2428 | } |
|
|
2429 | #endif |
|
|
2430 | |
|
|
2431 | #if EV_IDLE_ENABLE |
|
|
2432 | void |
|
|
2433 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2434 | { |
|
|
2435 | if (expect_false (ev_is_active (w))) |
|
|
2436 | return; |
|
|
2437 | |
|
|
2438 | pri_adjust (EV_A_ (W)w); |
|
|
2439 | |
|
|
2440 | { |
|
|
2441 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2442 | |
|
|
2443 | ++idleall; |
|
|
2444 | ev_start (EV_A_ (W)w, active); |
|
|
2445 | |
|
|
2446 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2447 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2448 | } |
|
|
2449 | } |
|
|
2450 | |
|
|
2451 | void |
|
|
2452 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2453 | { |
|
|
2454 | clear_pending (EV_A_ (W)w); |
|
|
2455 | if (expect_false (!ev_is_active (w))) |
|
|
2456 | return; |
|
|
2457 | |
|
|
2458 | { |
|
|
2459 | int active = ev_active (w); |
|
|
2460 | |
|
|
2461 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2462 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2463 | |
|
|
2464 | ev_stop (EV_A_ (W)w); |
|
|
2465 | --idleall; |
|
|
2466 | } |
|
|
2467 | } |
|
|
2468 | #endif |
|
|
2469 | |
|
|
2470 | void |
|
|
2471 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2472 | { |
|
|
2473 | if (expect_false (ev_is_active (w))) |
|
|
2474 | return; |
|
|
2475 | |
|
|
2476 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
2477 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
2478 | prepares [preparecnt - 1] = w; |
|
|
2479 | } |
|
|
2480 | |
|
|
2481 | void |
|
|
2482 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
2483 | { |
|
|
2484 | clear_pending (EV_A_ (W)w); |
|
|
2485 | if (expect_false (!ev_is_active (w))) |
|
|
2486 | return; |
|
|
2487 | |
|
|
2488 | { |
|
|
2489 | int active = ev_active (w); |
|
|
2490 | |
|
|
2491 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2492 | ev_active (prepares [active - 1]) = active; |
|
|
2493 | } |
|
|
2494 | |
|
|
2495 | ev_stop (EV_A_ (W)w); |
|
|
2496 | } |
|
|
2497 | |
|
|
2498 | void |
|
|
2499 | ev_check_start (EV_P_ ev_check *w) |
|
|
2500 | { |
|
|
2501 | if (expect_false (ev_is_active (w))) |
|
|
2502 | return; |
|
|
2503 | |
|
|
2504 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
2505 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
2506 | checks [checkcnt - 1] = w; |
|
|
2507 | } |
|
|
2508 | |
|
|
2509 | void |
|
|
2510 | ev_check_stop (EV_P_ ev_check *w) |
|
|
2511 | { |
|
|
2512 | clear_pending (EV_A_ (W)w); |
|
|
2513 | if (expect_false (!ev_is_active (w))) |
|
|
2514 | return; |
|
|
2515 | |
|
|
2516 | { |
|
|
2517 | int active = ev_active (w); |
|
|
2518 | |
|
|
2519 | checks [active - 1] = checks [--checkcnt]; |
|
|
2520 | ev_active (checks [active - 1]) = active; |
|
|
2521 | } |
|
|
2522 | |
|
|
2523 | ev_stop (EV_A_ (W)w); |
|
|
2524 | } |
|
|
2525 | |
|
|
2526 | #if EV_EMBED_ENABLE |
|
|
2527 | void noinline |
|
|
2528 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2529 | { |
|
|
2530 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2531 | } |
|
|
2532 | |
|
|
2533 | static void |
|
|
2534 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2535 | { |
|
|
2536 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2537 | |
|
|
2538 | if (ev_cb (w)) |
|
|
2539 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2540 | else |
|
|
2541 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2542 | } |
|
|
2543 | |
|
|
2544 | static void |
|
|
2545 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2546 | { |
|
|
2547 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2548 | |
|
|
2549 | { |
|
|
2550 | struct ev_loop *loop = w->other; |
|
|
2551 | |
|
|
2552 | while (fdchangecnt) |
|
|
2553 | { |
|
|
2554 | fd_reify (EV_A); |
|
|
2555 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2556 | } |
|
|
2557 | } |
|
|
2558 | } |
|
|
2559 | |
|
|
2560 | #if 0 |
|
|
2561 | static void |
|
|
2562 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2563 | { |
|
|
2564 | ev_idle_stop (EV_A_ idle); |
|
|
2565 | } |
|
|
2566 | #endif |
|
|
2567 | |
|
|
2568 | void |
|
|
2569 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2570 | { |
|
|
2571 | if (expect_false (ev_is_active (w))) |
|
|
2572 | return; |
|
|
2573 | |
|
|
2574 | { |
|
|
2575 | struct ev_loop *loop = w->other; |
|
|
2576 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2577 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2578 | } |
|
|
2579 | |
|
|
2580 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2581 | ev_io_start (EV_A_ &w->io); |
|
|
2582 | |
|
|
2583 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2584 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2585 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2586 | |
|
|
2587 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2588 | |
|
|
2589 | ev_start (EV_A_ (W)w, 1); |
|
|
2590 | } |
|
|
2591 | |
|
|
2592 | void |
|
|
2593 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
2594 | { |
|
|
2595 | clear_pending (EV_A_ (W)w); |
|
|
2596 | if (expect_false (!ev_is_active (w))) |
|
|
2597 | return; |
|
|
2598 | |
|
|
2599 | ev_io_stop (EV_A_ &w->io); |
|
|
2600 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2601 | |
|
|
2602 | ev_stop (EV_A_ (W)w); |
|
|
2603 | } |
|
|
2604 | #endif |
|
|
2605 | |
|
|
2606 | #if EV_FORK_ENABLE |
|
|
2607 | void |
|
|
2608 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2609 | { |
|
|
2610 | if (expect_false (ev_is_active (w))) |
|
|
2611 | return; |
|
|
2612 | |
|
|
2613 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2614 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2615 | forks [forkcnt - 1] = w; |
|
|
2616 | } |
|
|
2617 | |
|
|
2618 | void |
|
|
2619 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2620 | { |
|
|
2621 | clear_pending (EV_A_ (W)w); |
|
|
2622 | if (expect_false (!ev_is_active (w))) |
|
|
2623 | return; |
|
|
2624 | |
|
|
2625 | { |
|
|
2626 | int active = ev_active (w); |
|
|
2627 | |
|
|
2628 | forks [active - 1] = forks [--forkcnt]; |
|
|
2629 | ev_active (forks [active - 1]) = active; |
|
|
2630 | } |
|
|
2631 | |
|
|
2632 | ev_stop (EV_A_ (W)w); |
|
|
2633 | } |
|
|
2634 | #endif |
|
|
2635 | |
|
|
2636 | #if EV_ASYNC_ENABLE |
|
|
2637 | void |
|
|
2638 | ev_async_start (EV_P_ ev_async *w) |
|
|
2639 | { |
|
|
2640 | if (expect_false (ev_is_active (w))) |
|
|
2641 | return; |
|
|
2642 | |
|
|
2643 | evpipe_init (EV_A); |
|
|
2644 | |
|
|
2645 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2646 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2647 | asyncs [asynccnt - 1] = w; |
|
|
2648 | } |
|
|
2649 | |
|
|
2650 | void |
|
|
2651 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2652 | { |
|
|
2653 | clear_pending (EV_A_ (W)w); |
|
|
2654 | if (expect_false (!ev_is_active (w))) |
|
|
2655 | return; |
|
|
2656 | |
|
|
2657 | { |
|
|
2658 | int active = ev_active (w); |
|
|
2659 | |
|
|
2660 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2661 | ev_active (asyncs [active - 1]) = active; |
|
|
2662 | } |
|
|
2663 | |
|
|
2664 | ev_stop (EV_A_ (W)w); |
|
|
2665 | } |
|
|
2666 | |
|
|
2667 | void |
|
|
2668 | ev_async_send (EV_P_ ev_async *w) |
|
|
2669 | { |
|
|
2670 | w->sent = 1; |
|
|
2671 | evpipe_write (EV_A_ &gotasync); |
|
|
2672 | } |
|
|
2673 | #endif |
|
|
2674 | |
1659 | /*****************************************************************************/ |
2675 | /*****************************************************************************/ |
1660 | |
2676 | |
1661 | struct ev_once |
2677 | struct ev_once |
1662 | { |
2678 | { |
1663 | struct ev_io io; |
2679 | ev_io io; |
1664 | struct ev_timer to; |
2680 | ev_timer to; |
1665 | void (*cb)(int revents, void *arg); |
2681 | void (*cb)(int revents, void *arg); |
1666 | void *arg; |
2682 | void *arg; |
1667 | }; |
2683 | }; |
1668 | |
2684 | |
1669 | static void |
2685 | static void |
… | |
… | |
1678 | |
2694 | |
1679 | cb (revents, arg); |
2695 | cb (revents, arg); |
1680 | } |
2696 | } |
1681 | |
2697 | |
1682 | static void |
2698 | static void |
1683 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
2699 | once_cb_io (EV_P_ ev_io *w, int revents) |
1684 | { |
2700 | { |
1685 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2701 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1686 | } |
2702 | } |
1687 | |
2703 | |
1688 | static void |
2704 | static void |
1689 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
2705 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1690 | { |
2706 | { |
1691 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2707 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1692 | } |
2708 | } |
1693 | |
2709 | |
1694 | void |
2710 | void |
… | |
… | |
1718 | ev_timer_set (&once->to, timeout, 0.); |
2734 | ev_timer_set (&once->to, timeout, 0.); |
1719 | ev_timer_start (EV_A_ &once->to); |
2735 | ev_timer_start (EV_A_ &once->to); |
1720 | } |
2736 | } |
1721 | } |
2737 | } |
1722 | |
2738 | |
|
|
2739 | #if EV_MULTIPLICITY |
|
|
2740 | #include "ev_wrap.h" |
|
|
2741 | #endif |
|
|
2742 | |
1723 | #ifdef __cplusplus |
2743 | #ifdef __cplusplus |
1724 | } |
2744 | } |
1725 | #endif |
2745 | #endif |
1726 | |
2746 | |