1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007-2019 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 modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
43 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
44 | # else |
44 | # else |
45 | # include "config.h" |
45 | # include "config.h" |
46 | # endif |
46 | # endif |
47 | |
47 | |
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48 | # if HAVE_FLOOR |
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49 | # ifndef EV_USE_FLOOR |
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50 | # define EV_USE_FLOOR 1 |
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51 | # endif |
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52 | # endif |
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53 | |
48 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
49 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
50 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
51 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
52 | # define EV_USE_REALTIME 0 |
58 | # define EV_USE_REALTIME 0 |
53 | # endif |
59 | # endif |
54 | # ifndef EV_USE_MONOTONIC |
60 | # ifndef EV_USE_MONOTONIC |
55 | # define EV_USE_MONOTONIC 1 |
61 | # define EV_USE_MONOTONIC 1 |
56 | # endif |
62 | # endif |
57 | # endif |
63 | # endif |
58 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
64 | # elif !defined EV_USE_CLOCK_SYSCALL |
59 | # define EV_USE_CLOCK_SYSCALL 0 |
65 | # define EV_USE_CLOCK_SYSCALL 0 |
60 | # endif |
66 | # endif |
61 | |
67 | |
62 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
63 | # ifndef EV_USE_MONOTONIC |
69 | # ifndef EV_USE_MONOTONIC |
… | |
… | |
107 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
108 | # endif |
114 | # endif |
109 | # else |
115 | # else |
110 | # undef EV_USE_EPOLL |
116 | # undef EV_USE_EPOLL |
111 | # define EV_USE_EPOLL 0 |
117 | # define EV_USE_EPOLL 0 |
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118 | # endif |
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119 | |
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120 | # if HAVE_LINUX_AIO_ABI_H |
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121 | # ifndef EV_USE_LINUXAIO |
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122 | # define EV_USE_LINUXAIO EV_FEATURE_BACKENDS |
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123 | # endif |
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124 | # else |
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125 | # undef EV_USE_LINUXAIO |
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126 | # define EV_USE_LINUXAIO 0 |
112 | # endif |
127 | # endif |
113 | |
128 | |
114 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
129 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
115 | # ifndef EV_USE_KQUEUE |
130 | # ifndef EV_USE_KQUEUE |
116 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
131 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
… | |
… | |
156 | # define EV_USE_EVENTFD 0 |
171 | # define EV_USE_EVENTFD 0 |
157 | # endif |
172 | # endif |
158 | |
173 | |
159 | #endif |
174 | #endif |
160 | |
175 | |
161 | #include <math.h> |
176 | /* OS X, in its infinite idiocy, actually HARDCODES |
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177 | * a limit of 1024 into their select. Where people have brains, |
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178 | * OS X engineers apparently have a vacuum. Or maybe they were |
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179 | * ordered to have a vacuum, or they do anything for money. |
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180 | * This might help. Or not. |
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181 | * Note that this must be defined early, as other include files |
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182 | * will rely on this define as well. |
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183 | */ |
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184 | #define _DARWIN_UNLIMITED_SELECT 1 |
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185 | |
162 | #include <stdlib.h> |
186 | #include <stdlib.h> |
163 | #include <string.h> |
187 | #include <string.h> |
164 | #include <fcntl.h> |
188 | #include <fcntl.h> |
165 | #include <stddef.h> |
189 | #include <stddef.h> |
166 | |
190 | |
… | |
… | |
178 | # include EV_H |
202 | # include EV_H |
179 | #else |
203 | #else |
180 | # include "ev.h" |
204 | # include "ev.h" |
181 | #endif |
205 | #endif |
182 | |
206 | |
183 | EV_CPP(extern "C" {) |
207 | #if EV_NO_THREADS |
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208 | # undef EV_NO_SMP |
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209 | # define EV_NO_SMP 1 |
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210 | # undef ECB_NO_THREADS |
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211 | # define ECB_NO_THREADS 1 |
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212 | #endif |
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213 | #if EV_NO_SMP |
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214 | # undef EV_NO_SMP |
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215 | # define ECB_NO_SMP 1 |
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216 | #endif |
184 | |
217 | |
185 | #ifndef _WIN32 |
218 | #ifndef _WIN32 |
186 | # include <sys/time.h> |
219 | # include <sys/time.h> |
187 | # include <sys/wait.h> |
220 | # include <sys/wait.h> |
188 | # include <unistd.h> |
221 | # include <unistd.h> |
189 | #else |
222 | #else |
190 | # include <io.h> |
223 | # include <io.h> |
191 | # define WIN32_LEAN_AND_MEAN |
224 | # define WIN32_LEAN_AND_MEAN |
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225 | # include <winsock2.h> |
192 | # include <windows.h> |
226 | # include <windows.h> |
193 | # ifndef EV_SELECT_IS_WINSOCKET |
227 | # ifndef EV_SELECT_IS_WINSOCKET |
194 | # define EV_SELECT_IS_WINSOCKET 1 |
228 | # define EV_SELECT_IS_WINSOCKET 1 |
195 | # endif |
229 | # endif |
196 | # undef EV_AVOID_STDIO |
230 | # undef EV_AVOID_STDIO |
197 | #endif |
231 | #endif |
198 | |
232 | |
199 | /* OS X, in its infinite idiocy, actually HARDCODES |
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200 | * a limit of 1024 into their select. Where people have brains, |
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201 | * OS X engineers apparently have a vacuum. Or maybe they were |
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202 | * ordered to have a vacuum, or they do anything for money. |
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203 | * This might help. Or not. |
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204 | */ |
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205 | #define _DARWIN_UNLIMITED_SELECT 1 |
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206 | |
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207 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
233 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
208 | |
234 | |
209 | /* try to deduce the maximum number of signals on this platform */ |
235 | /* try to deduce the maximum number of signals on this platform */ |
210 | #if defined (EV_NSIG) |
236 | #if defined EV_NSIG |
211 | /* use what's provided */ |
237 | /* use what's provided */ |
212 | #elif defined (NSIG) |
238 | #elif defined NSIG |
213 | # define EV_NSIG (NSIG) |
239 | # define EV_NSIG (NSIG) |
214 | #elif defined(_NSIG) |
240 | #elif defined _NSIG |
215 | # define EV_NSIG (_NSIG) |
241 | # define EV_NSIG (_NSIG) |
216 | #elif defined (SIGMAX) |
242 | #elif defined SIGMAX |
217 | # define EV_NSIG (SIGMAX+1) |
243 | # define EV_NSIG (SIGMAX+1) |
218 | #elif defined (SIG_MAX) |
244 | #elif defined SIG_MAX |
219 | # define EV_NSIG (SIG_MAX+1) |
245 | # define EV_NSIG (SIG_MAX+1) |
220 | #elif defined (_SIG_MAX) |
246 | #elif defined _SIG_MAX |
221 | # define EV_NSIG (_SIG_MAX+1) |
247 | # define EV_NSIG (_SIG_MAX+1) |
222 | #elif defined (MAXSIG) |
248 | #elif defined MAXSIG |
223 | # define EV_NSIG (MAXSIG+1) |
249 | # define EV_NSIG (MAXSIG+1) |
224 | #elif defined (MAX_SIG) |
250 | #elif defined MAX_SIG |
225 | # define EV_NSIG (MAX_SIG+1) |
251 | # define EV_NSIG (MAX_SIG+1) |
226 | #elif defined (SIGARRAYSIZE) |
252 | #elif defined SIGARRAYSIZE |
227 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
253 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
228 | #elif defined (_sys_nsig) |
254 | #elif defined _sys_nsig |
229 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
255 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
230 | #else |
256 | #else |
231 | # error "unable to find value for NSIG, please report" |
257 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
232 | /* to make it compile regardless, just remove the above line, */ |
258 | #endif |
233 | /* but consider reporting it, too! :) */ |
259 | |
234 | # define EV_NSIG 65 |
260 | #ifndef EV_USE_FLOOR |
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261 | # define EV_USE_FLOOR 0 |
235 | #endif |
262 | #endif |
236 | |
263 | |
237 | #ifndef EV_USE_CLOCK_SYSCALL |
264 | #ifndef EV_USE_CLOCK_SYSCALL |
238 | # if __linux && __GLIBC__ >= 2 |
265 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
239 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
266 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
240 | # else |
267 | # else |
241 | # define EV_USE_CLOCK_SYSCALL 0 |
268 | # define EV_USE_CLOCK_SYSCALL 0 |
242 | # endif |
269 | # endif |
243 | #endif |
270 | #endif |
244 | |
271 | |
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272 | #if !(_POSIX_TIMERS > 0) |
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273 | # ifndef EV_USE_MONOTONIC |
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274 | # define EV_USE_MONOTONIC 0 |
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275 | # endif |
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276 | # ifndef EV_USE_REALTIME |
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277 | # define EV_USE_REALTIME 0 |
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278 | # endif |
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279 | #endif |
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280 | |
245 | #ifndef EV_USE_MONOTONIC |
281 | #ifndef EV_USE_MONOTONIC |
246 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
282 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
247 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
283 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
248 | # else |
284 | # else |
249 | # define EV_USE_MONOTONIC 0 |
285 | # define EV_USE_MONOTONIC 0 |
250 | # endif |
286 | # endif |
251 | #endif |
287 | #endif |
… | |
… | |
288 | |
324 | |
289 | #ifndef EV_USE_PORT |
325 | #ifndef EV_USE_PORT |
290 | # define EV_USE_PORT 0 |
326 | # define EV_USE_PORT 0 |
291 | #endif |
327 | #endif |
292 | |
328 | |
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329 | #ifndef EV_USE_LINUXAIO |
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330 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
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331 | # define EV_USE_LINUXAIO 1 |
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332 | # else |
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333 | # define EV_USE_LINUXAIO 0 |
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334 | # endif |
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335 | #endif |
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336 | |
293 | #ifndef EV_USE_INOTIFY |
337 | #ifndef EV_USE_INOTIFY |
294 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
338 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
295 | # define EV_USE_INOTIFY EV_FEATURE_OS |
339 | # define EV_USE_INOTIFY EV_FEATURE_OS |
296 | # else |
340 | # else |
297 | # define EV_USE_INOTIFY 0 |
341 | # define EV_USE_INOTIFY 0 |
… | |
… | |
338 | |
382 | |
339 | #ifndef EV_HEAP_CACHE_AT |
383 | #ifndef EV_HEAP_CACHE_AT |
340 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
384 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
341 | #endif |
385 | #endif |
342 | |
386 | |
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387 | #ifdef __ANDROID__ |
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388 | /* supposedly, android doesn't typedef fd_mask */ |
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389 | # undef EV_USE_SELECT |
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390 | # define EV_USE_SELECT 0 |
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391 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
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392 | # undef EV_USE_CLOCK_SYSCALL |
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393 | # define EV_USE_CLOCK_SYSCALL 0 |
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394 | #endif |
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395 | |
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396 | /* aix's poll.h seems to cause lots of trouble */ |
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397 | #ifdef _AIX |
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398 | /* AIX has a completely broken poll.h header */ |
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399 | # undef EV_USE_POLL |
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400 | # define EV_USE_POLL 0 |
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401 | #endif |
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402 | |
343 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
403 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
344 | /* which makes programs even slower. might work on other unices, too. */ |
404 | /* which makes programs even slower. might work on other unices, too. */ |
345 | #if EV_USE_CLOCK_SYSCALL |
405 | #if EV_USE_CLOCK_SYSCALL |
346 | # include <syscall.h> |
406 | # include <sys/syscall.h> |
347 | # ifdef SYS_clock_gettime |
407 | # ifdef SYS_clock_gettime |
348 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
408 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
349 | # undef EV_USE_MONOTONIC |
409 | # undef EV_USE_MONOTONIC |
350 | # define EV_USE_MONOTONIC 1 |
410 | # define EV_USE_MONOTONIC 1 |
351 | # else |
411 | # else |
… | |
… | |
354 | # endif |
414 | # endif |
355 | #endif |
415 | #endif |
356 | |
416 | |
357 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
417 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
358 | |
418 | |
359 | #ifdef _AIX |
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360 | /* AIX has a completely broken poll.h header */ |
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361 | # undef EV_USE_POLL |
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362 | # define EV_USE_POLL 0 |
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363 | #endif |
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364 | |
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365 | #ifndef CLOCK_MONOTONIC |
419 | #ifndef CLOCK_MONOTONIC |
366 | # undef EV_USE_MONOTONIC |
420 | # undef EV_USE_MONOTONIC |
367 | # define EV_USE_MONOTONIC 0 |
421 | # define EV_USE_MONOTONIC 0 |
368 | #endif |
422 | #endif |
369 | |
423 | |
… | |
… | |
376 | # undef EV_USE_INOTIFY |
430 | # undef EV_USE_INOTIFY |
377 | # define EV_USE_INOTIFY 0 |
431 | # define EV_USE_INOTIFY 0 |
378 | #endif |
432 | #endif |
379 | |
433 | |
380 | #if !EV_USE_NANOSLEEP |
434 | #if !EV_USE_NANOSLEEP |
381 | # ifndef _WIN32 |
435 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
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436 | # if !defined _WIN32 && !defined __hpux |
382 | # include <sys/select.h> |
437 | # include <sys/select.h> |
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438 | # endif |
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439 | #endif |
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440 | |
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441 | #if EV_USE_LINUXAIO |
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442 | # include <sys/syscall.h> |
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443 | # if !SYS_io_getevents || !EV_USE_EPOLL |
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444 | # undef EV_USE_LINUXAIO |
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445 | # define EV_USE_LINUXAIO 0 |
383 | # endif |
446 | # endif |
384 | #endif |
447 | #endif |
385 | |
448 | |
386 | #if EV_USE_INOTIFY |
449 | #if EV_USE_INOTIFY |
387 | # include <sys/statfs.h> |
450 | # include <sys/statfs.h> |
… | |
… | |
389 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
452 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
390 | # ifndef IN_DONT_FOLLOW |
453 | # ifndef IN_DONT_FOLLOW |
391 | # undef EV_USE_INOTIFY |
454 | # undef EV_USE_INOTIFY |
392 | # define EV_USE_INOTIFY 0 |
455 | # define EV_USE_INOTIFY 0 |
393 | # endif |
456 | # endif |
394 | #endif |
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395 | |
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396 | #if EV_SELECT_IS_WINSOCKET |
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397 | # include <winsock.h> |
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398 | #endif |
457 | #endif |
399 | |
458 | |
400 | #if EV_USE_EVENTFD |
459 | #if EV_USE_EVENTFD |
401 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
460 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
402 | # include <stdint.h> |
461 | # include <stdint.h> |
… | |
… | |
442 | #else |
501 | #else |
443 | # define EV_FREQUENT_CHECK do { } while (0) |
502 | # define EV_FREQUENT_CHECK do { } while (0) |
444 | #endif |
503 | #endif |
445 | |
504 | |
446 | /* |
505 | /* |
447 | * This is used to avoid floating point rounding problems. |
506 | * This is used to work around floating point rounding problems. |
448 | * It is added to ev_rt_now when scheduling periodics |
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449 | * to ensure progress, time-wise, even when rounding |
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450 | * errors are against us. |
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451 | * This value is good at least till the year 4000. |
507 | * This value is good at least till the year 4000. |
452 | * Better solutions welcome. |
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453 | */ |
508 | */ |
454 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
509 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
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510 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
455 | |
511 | |
456 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
512 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
457 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
513 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
458 | |
514 | |
459 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
515 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
460 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
516 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
461 | |
517 | |
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518 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
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519 | /* ECB.H BEGIN */ |
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520 | /* |
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521 | * libecb - http://software.schmorp.de/pkg/libecb |
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522 | * |
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523 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
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524 | * Copyright (©) 2011 Emanuele Giaquinta |
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525 | * All rights reserved. |
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526 | * |
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527 | * Redistribution and use in source and binary forms, with or without modifica- |
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528 | * tion, are permitted provided that the following conditions are met: |
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529 | * |
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530 | * 1. Redistributions of source code must retain the above copyright notice, |
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531 | * this list of conditions and the following disclaimer. |
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532 | * |
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533 | * 2. Redistributions in binary form must reproduce the above copyright |
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534 | * notice, this list of conditions and the following disclaimer in the |
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535 | * documentation and/or other materials provided with the distribution. |
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536 | * |
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537 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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538 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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539 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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540 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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541 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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542 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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543 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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544 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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545 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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546 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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547 | * |
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548 | * Alternatively, the contents of this file may be used under the terms of |
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549 | * the GNU General Public License ("GPL") version 2 or any later version, |
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|
550 | * in which case the provisions of the GPL are applicable instead of |
|
|
551 | * the above. If you wish to allow the use of your version of this file |
|
|
552 | * only under the terms of the GPL and not to allow others to use your |
|
|
553 | * version of this file under the BSD license, indicate your decision |
|
|
554 | * by deleting the provisions above and replace them with the notice |
|
|
555 | * and other provisions required by the GPL. If you do not delete the |
|
|
556 | * provisions above, a recipient may use your version of this file under |
|
|
557 | * either the BSD or the GPL. |
|
|
558 | */ |
|
|
559 | |
|
|
560 | #ifndef ECB_H |
|
|
561 | #define ECB_H |
|
|
562 | |
|
|
563 | /* 16 bits major, 16 bits minor */ |
|
|
564 | #define ECB_VERSION 0x00010005 |
|
|
565 | |
|
|
566 | #ifdef _WIN32 |
|
|
567 | typedef signed char int8_t; |
|
|
568 | typedef unsigned char uint8_t; |
|
|
569 | typedef signed short int16_t; |
|
|
570 | typedef unsigned short uint16_t; |
|
|
571 | typedef signed int int32_t; |
|
|
572 | typedef unsigned int uint32_t; |
462 | #if __GNUC__ >= 4 |
573 | #if __GNUC__ |
|
|
574 | typedef signed long long int64_t; |
|
|
575 | typedef unsigned long long uint64_t; |
|
|
576 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
577 | typedef signed __int64 int64_t; |
|
|
578 | typedef unsigned __int64 uint64_t; |
|
|
579 | #endif |
|
|
580 | #ifdef _WIN64 |
|
|
581 | #define ECB_PTRSIZE 8 |
|
|
582 | typedef uint64_t uintptr_t; |
|
|
583 | typedef int64_t intptr_t; |
|
|
584 | #else |
|
|
585 | #define ECB_PTRSIZE 4 |
|
|
586 | typedef uint32_t uintptr_t; |
|
|
587 | typedef int32_t intptr_t; |
|
|
588 | #endif |
|
|
589 | #else |
|
|
590 | #include <inttypes.h> |
|
|
591 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
|
|
592 | #define ECB_PTRSIZE 8 |
|
|
593 | #else |
|
|
594 | #define ECB_PTRSIZE 4 |
|
|
595 | #endif |
|
|
596 | #endif |
|
|
597 | |
|
|
598 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
|
|
599 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
|
|
600 | |
|
|
601 | /* work around x32 idiocy by defining proper macros */ |
|
|
602 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
603 | #if _ILP32 |
|
|
604 | #define ECB_AMD64_X32 1 |
|
|
605 | #else |
|
|
606 | #define ECB_AMD64 1 |
|
|
607 | #endif |
|
|
608 | #endif |
|
|
609 | |
|
|
610 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
611 | * what their idiot authors think are the "more important" extensions, |
|
|
612 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
613 | * or so. |
|
|
614 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
615 | * an issue with that they should have done it right in the first place. |
|
|
616 | */ |
|
|
617 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
618 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
619 | #else |
|
|
620 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
621 | #endif |
|
|
622 | |
|
|
623 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
|
|
624 | |
|
|
625 | #if __clang__ && defined __has_builtin |
|
|
626 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
|
|
627 | #else |
|
|
628 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
629 | #endif |
|
|
630 | |
|
|
631 | #if __clang__ && defined __has_extension |
|
|
632 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
633 | #else |
|
|
634 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
635 | #endif |
|
|
636 | |
|
|
637 | #define ECB_CPP (__cplusplus+0) |
|
|
638 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
639 | #define ECB_CPP14 (__cplusplus >= 201402L) |
|
|
640 | #define ECB_CPP17 (__cplusplus >= 201703L) |
|
|
641 | |
|
|
642 | #if ECB_CPP |
|
|
643 | #define ECB_C 0 |
|
|
644 | #define ECB_STDC_VERSION 0 |
|
|
645 | #else |
|
|
646 | #define ECB_C 1 |
|
|
647 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
648 | #endif |
|
|
649 | |
|
|
650 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
651 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
652 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
|
|
653 | |
|
|
654 | #if ECB_CPP |
|
|
655 | #define ECB_EXTERN_C extern "C" |
|
|
656 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
657 | #define ECB_EXTERN_C_END } |
|
|
658 | #else |
|
|
659 | #define ECB_EXTERN_C extern |
|
|
660 | #define ECB_EXTERN_C_BEG |
|
|
661 | #define ECB_EXTERN_C_END |
|
|
662 | #endif |
|
|
663 | |
|
|
664 | /*****************************************************************************/ |
|
|
665 | |
|
|
666 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
667 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
668 | |
|
|
669 | #if ECB_NO_THREADS |
|
|
670 | #define ECB_NO_SMP 1 |
|
|
671 | #endif |
|
|
672 | |
|
|
673 | #if ECB_NO_SMP |
|
|
674 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
675 | #endif |
|
|
676 | |
|
|
677 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
|
|
678 | #if __xlC__ && ECB_CPP |
|
|
679 | #include <builtins.h> |
|
|
680 | #endif |
|
|
681 | |
|
|
682 | #if 1400 <= _MSC_VER |
|
|
683 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
|
|
684 | #endif |
|
|
685 | |
|
|
686 | #ifndef ECB_MEMORY_FENCE |
|
|
687 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
688 | #if __i386 || __i386__ |
|
|
689 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
690 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
691 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
692 | #elif ECB_GCC_AMD64 |
|
|
693 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
694 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
695 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
696 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
697 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
698 | #elif defined __ARM_ARCH_2__ \ |
|
|
699 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
|
|
700 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
|
|
701 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
|
|
702 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
|
|
703 | || defined __ARM_ARCH_5TEJ__ |
|
|
704 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
|
|
705 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
706 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
|
|
707 | || defined __ARM_ARCH_6T2__ |
|
|
708 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
709 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
710 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
|
|
711 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
712 | #elif __aarch64__ |
|
|
713 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
714 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
|
|
715 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
716 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
717 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
718 | #elif defined __s390__ || defined __s390x__ |
|
|
719 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
720 | #elif defined __mips__ |
|
|
721 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
722 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
723 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
724 | #elif defined __alpha__ |
|
|
725 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
726 | #elif defined __hppa__ |
|
|
727 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
728 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
729 | #elif defined __ia64__ |
|
|
730 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
731 | #elif defined __m68k__ |
|
|
732 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
733 | #elif defined __m88k__ |
|
|
734 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
735 | #elif defined __sh__ |
|
|
736 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
737 | #endif |
|
|
738 | #endif |
|
|
739 | #endif |
|
|
740 | |
|
|
741 | #ifndef ECB_MEMORY_FENCE |
|
|
742 | #if ECB_GCC_VERSION(4,7) |
|
|
743 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
744 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
745 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
746 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
747 | |
|
|
748 | #elif ECB_CLANG_EXTENSION(c_atomic) |
|
|
749 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
750 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
751 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
752 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
753 | |
|
|
754 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
755 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
756 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
757 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
758 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
759 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
760 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
761 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
762 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
763 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
764 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
765 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
766 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
767 | #elif defined _WIN32 |
|
|
768 | #include <WinNT.h> |
|
|
769 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
770 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
771 | #include <mbarrier.h> |
|
|
772 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
773 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
774 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
775 | #elif __xlC__ |
|
|
776 | #define ECB_MEMORY_FENCE __sync () |
|
|
777 | #endif |
|
|
778 | #endif |
|
|
779 | |
|
|
780 | #ifndef ECB_MEMORY_FENCE |
|
|
781 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
782 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
783 | /* not just C11 atomics and atomic accesses */ |
|
|
784 | #include <stdatomic.h> |
|
|
785 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
786 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
787 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
788 | /* for most usages, or gcc and clang have a bug */ |
|
|
789 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
790 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
791 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
792 | /* for all __atomic_thread_fence's except seq_cst */ |
|
|
793 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
794 | #endif |
|
|
795 | #endif |
|
|
796 | |
|
|
797 | #ifndef ECB_MEMORY_FENCE |
|
|
798 | #if !ECB_AVOID_PTHREADS |
|
|
799 | /* |
|
|
800 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
801 | * or failure to find pthread.h, then you should implement |
|
|
802 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
803 | * OR provide pthread.h and link against the posix thread library |
|
|
804 | * of your system. |
|
|
805 | */ |
|
|
806 | #include <pthread.h> |
|
|
807 | #define ECB_NEEDS_PTHREADS 1 |
|
|
808 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
809 | |
|
|
810 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
811 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
812 | #endif |
|
|
813 | #endif |
|
|
814 | |
|
|
815 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
816 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
817 | #endif |
|
|
818 | |
|
|
819 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
820 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
821 | #endif |
|
|
822 | |
|
|
823 | /*****************************************************************************/ |
|
|
824 | |
|
|
825 | #if ECB_CPP |
|
|
826 | #define ecb_inline static inline |
|
|
827 | #elif ECB_GCC_VERSION(2,5) |
|
|
828 | #define ecb_inline static __inline__ |
|
|
829 | #elif ECB_C99 |
|
|
830 | #define ecb_inline static inline |
|
|
831 | #else |
|
|
832 | #define ecb_inline static |
|
|
833 | #endif |
|
|
834 | |
|
|
835 | #if ECB_GCC_VERSION(3,3) |
|
|
836 | #define ecb_restrict __restrict__ |
|
|
837 | #elif ECB_C99 |
|
|
838 | #define ecb_restrict restrict |
|
|
839 | #else |
|
|
840 | #define ecb_restrict |
|
|
841 | #endif |
|
|
842 | |
|
|
843 | typedef int ecb_bool; |
|
|
844 | |
|
|
845 | #define ECB_CONCAT_(a, b) a ## b |
|
|
846 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
847 | #define ECB_STRINGIFY_(a) # a |
|
|
848 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
849 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
|
|
850 | |
|
|
851 | #define ecb_function_ ecb_inline |
|
|
852 | |
|
|
853 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
|
|
854 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
|
|
855 | #else |
|
|
856 | #define ecb_attribute(attrlist) |
|
|
857 | #endif |
|
|
858 | |
|
|
859 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
|
|
860 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
861 | #else |
|
|
862 | /* possible C11 impl for integral types |
|
|
863 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
864 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
865 | |
|
|
866 | #define ecb_is_constant(expr) 0 |
|
|
867 | #endif |
|
|
868 | |
|
|
869 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
463 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
870 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
464 | # define noinline __attribute__ ((noinline)) |
|
|
465 | #else |
871 | #else |
466 | # define expect(expr,value) (expr) |
872 | #define ecb_expect(expr,value) (expr) |
467 | # define noinline |
|
|
468 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
469 | # define inline |
|
|
470 | # endif |
873 | #endif |
471 | #endif |
|
|
472 | |
874 | |
|
|
875 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
|
|
876 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
877 | #else |
|
|
878 | #define ecb_prefetch(addr,rw,locality) |
|
|
879 | #endif |
|
|
880 | |
|
|
881 | /* no emulation for ecb_decltype */ |
|
|
882 | #if ECB_CPP11 |
|
|
883 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
884 | template<class T> struct ecb_decltype_t { typedef T type; }; |
|
|
885 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
|
|
886 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
|
|
887 | #define ecb_decltype(x) __typeof__ (x) |
|
|
888 | #endif |
|
|
889 | |
|
|
890 | #if _MSC_VER >= 1300 |
|
|
891 | #define ecb_deprecated __declspec (deprecated) |
|
|
892 | #else |
|
|
893 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
894 | #endif |
|
|
895 | |
|
|
896 | #if _MSC_VER >= 1500 |
|
|
897 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
898 | #elif ECB_GCC_VERSION(4,5) |
|
|
899 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
900 | #else |
|
|
901 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
902 | #endif |
|
|
903 | |
|
|
904 | #if _MSC_VER >= 1400 |
|
|
905 | #define ecb_noinline __declspec (noinline) |
|
|
906 | #else |
|
|
907 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
908 | #endif |
|
|
909 | |
|
|
910 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
911 | #define ecb_const ecb_attribute ((__const__)) |
|
|
912 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
913 | |
|
|
914 | #if ECB_C11 || __IBMC_NORETURN |
|
|
915 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
|
|
916 | #define ecb_noreturn _Noreturn |
|
|
917 | #elif ECB_CPP11 |
|
|
918 | #define ecb_noreturn [[noreturn]] |
|
|
919 | #elif _MSC_VER >= 1200 |
|
|
920 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
|
|
921 | #define ecb_noreturn __declspec (noreturn) |
|
|
922 | #else |
|
|
923 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
924 | #endif |
|
|
925 | |
|
|
926 | #if ECB_GCC_VERSION(4,3) |
|
|
927 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
928 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
929 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
930 | #else |
|
|
931 | #define ecb_artificial |
|
|
932 | #define ecb_hot |
|
|
933 | #define ecb_cold |
|
|
934 | #endif |
|
|
935 | |
|
|
936 | /* put around conditional expressions if you are very sure that the */ |
|
|
937 | /* expression is mostly true or mostly false. note that these return */ |
|
|
938 | /* booleans, not the expression. */ |
473 | #define expect_false(expr) expect ((expr) != 0, 0) |
939 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
474 | #define expect_true(expr) expect ((expr) != 0, 1) |
940 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
941 | /* for compatibility to the rest of the world */ |
|
|
942 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
943 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
944 | |
|
|
945 | /* count trailing zero bits and count # of one bits */ |
|
|
946 | #if ECB_GCC_VERSION(3,4) \ |
|
|
947 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
948 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
949 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
|
|
950 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
951 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
952 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
953 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
954 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
955 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
956 | /* no popcountll */ |
|
|
957 | #else |
|
|
958 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
|
|
959 | ecb_function_ ecb_const int |
|
|
960 | ecb_ctz32 (uint32_t x) |
|
|
961 | { |
|
|
962 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
963 | unsigned long r; |
|
|
964 | _BitScanForward (&r, x); |
|
|
965 | return (int)r; |
|
|
966 | #else |
|
|
967 | int r = 0; |
|
|
968 | |
|
|
969 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
970 | |
|
|
971 | #if ECB_branchless_on_i386 |
|
|
972 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
973 | r += !!(x & 0xcccccccc) << 1; |
|
|
974 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
975 | r += !!(x & 0xff00ff00) << 3; |
|
|
976 | r += !!(x & 0xffff0000) << 4; |
|
|
977 | #else |
|
|
978 | if (x & 0xaaaaaaaa) r += 1; |
|
|
979 | if (x & 0xcccccccc) r += 2; |
|
|
980 | if (x & 0xf0f0f0f0) r += 4; |
|
|
981 | if (x & 0xff00ff00) r += 8; |
|
|
982 | if (x & 0xffff0000) r += 16; |
|
|
983 | #endif |
|
|
984 | |
|
|
985 | return r; |
|
|
986 | #endif |
|
|
987 | } |
|
|
988 | |
|
|
989 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
|
|
990 | ecb_function_ ecb_const int |
|
|
991 | ecb_ctz64 (uint64_t x) |
|
|
992 | { |
|
|
993 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
994 | unsigned long r; |
|
|
995 | _BitScanForward64 (&r, x); |
|
|
996 | return (int)r; |
|
|
997 | #else |
|
|
998 | int shift = x & 0xffffffff ? 0 : 32; |
|
|
999 | return ecb_ctz32 (x >> shift) + shift; |
|
|
1000 | #endif |
|
|
1001 | } |
|
|
1002 | |
|
|
1003 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
|
|
1004 | ecb_function_ ecb_const int |
|
|
1005 | ecb_popcount32 (uint32_t x) |
|
|
1006 | { |
|
|
1007 | x -= (x >> 1) & 0x55555555; |
|
|
1008 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
1009 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
1010 | x *= 0x01010101; |
|
|
1011 | |
|
|
1012 | return x >> 24; |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
|
|
1016 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
|
|
1017 | { |
|
|
1018 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
1019 | unsigned long r; |
|
|
1020 | _BitScanReverse (&r, x); |
|
|
1021 | return (int)r; |
|
|
1022 | #else |
|
|
1023 | int r = 0; |
|
|
1024 | |
|
|
1025 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
1026 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
1027 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
1028 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
1029 | if (x >> 1) { r += 1; } |
|
|
1030 | |
|
|
1031 | return r; |
|
|
1032 | #endif |
|
|
1033 | } |
|
|
1034 | |
|
|
1035 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
|
|
1036 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
|
|
1037 | { |
|
|
1038 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1039 | unsigned long r; |
|
|
1040 | _BitScanReverse64 (&r, x); |
|
|
1041 | return (int)r; |
|
|
1042 | #else |
|
|
1043 | int r = 0; |
|
|
1044 | |
|
|
1045 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
1046 | |
|
|
1047 | return r + ecb_ld32 (x); |
|
|
1048 | #endif |
|
|
1049 | } |
|
|
1050 | #endif |
|
|
1051 | |
|
|
1052 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
|
|
1053 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
1054 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
|
|
1055 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
1056 | |
|
|
1057 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
|
|
1058 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
|
|
1059 | { |
|
|
1060 | return ( (x * 0x0802U & 0x22110U) |
|
|
1061 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
|
|
1065 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
|
|
1066 | { |
|
|
1067 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
1068 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
1069 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
1070 | x = ( x >> 8 ) | ( x << 8); |
|
|
1071 | |
|
|
1072 | return x; |
|
|
1073 | } |
|
|
1074 | |
|
|
1075 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
|
|
1076 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
|
|
1077 | { |
|
|
1078 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
1079 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
1080 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
1081 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
1082 | x = ( x >> 16 ) | ( x << 16); |
|
|
1083 | |
|
|
1084 | return x; |
|
|
1085 | } |
|
|
1086 | |
|
|
1087 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
1088 | /* so for this version we are lazy */ |
|
|
1089 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
|
|
1090 | ecb_function_ ecb_const int |
|
|
1091 | ecb_popcount64 (uint64_t x) |
|
|
1092 | { |
|
|
1093 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
1094 | } |
|
|
1095 | |
|
|
1096 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
|
|
1097 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
|
|
1098 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
|
|
1099 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
|
|
1100 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
|
|
1101 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
|
|
1102 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
|
|
1103 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
|
|
1104 | |
|
|
1105 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
1106 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
1107 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
1108 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
1109 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
1110 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
1111 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
1112 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
1113 | |
|
|
1114 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
|
|
1115 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
|
|
1116 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
|
|
1117 | #else |
|
|
1118 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1119 | #endif |
|
|
1120 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
1121 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
1122 | #elif _MSC_VER |
|
|
1123 | #include <stdlib.h> |
|
|
1124 | #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) |
|
|
1125 | #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) |
|
|
1126 | #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) |
|
|
1127 | #else |
|
|
1128 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
|
|
1129 | ecb_function_ ecb_const uint16_t |
|
|
1130 | ecb_bswap16 (uint16_t x) |
|
|
1131 | { |
|
|
1132 | return ecb_rotl16 (x, 8); |
|
|
1133 | } |
|
|
1134 | |
|
|
1135 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
|
|
1136 | ecb_function_ ecb_const uint32_t |
|
|
1137 | ecb_bswap32 (uint32_t x) |
|
|
1138 | { |
|
|
1139 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
1140 | } |
|
|
1141 | |
|
|
1142 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
|
|
1143 | ecb_function_ ecb_const uint64_t |
|
|
1144 | ecb_bswap64 (uint64_t x) |
|
|
1145 | { |
|
|
1146 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
1147 | } |
|
|
1148 | #endif |
|
|
1149 | |
|
|
1150 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
|
|
1151 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1152 | #else |
|
|
1153 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1154 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
|
|
1155 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
|
|
1156 | #endif |
|
|
1157 | |
|
|
1158 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1159 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1160 | |
|
|
1161 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
|
|
1162 | ecb_inline ecb_const uint32_t |
|
|
1163 | ecb_byteorder_helper (void) |
|
|
1164 | { |
|
|
1165 | /* the union code still generates code under pressure in gcc, */ |
|
|
1166 | /* but less than using pointers, and always seems to */ |
|
|
1167 | /* successfully return a constant. */ |
|
|
1168 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1169 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1170 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1171 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
1172 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
1173 | #define ECB_LITTLE_ENDIAN 1 |
|
|
1174 | return 0x44332211; |
|
|
1175 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
1176 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
1177 | #define ECB_BIG_ENDIAN 1 |
|
|
1178 | return 0x11223344; |
|
|
1179 | #else |
|
|
1180 | union |
|
|
1181 | { |
|
|
1182 | uint8_t c[4]; |
|
|
1183 | uint32_t u; |
|
|
1184 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
|
|
1185 | return u.u; |
|
|
1186 | #endif |
|
|
1187 | } |
|
|
1188 | |
|
|
1189 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
|
|
1190 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
|
|
1191 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
|
|
1192 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
1193 | |
|
|
1194 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1195 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1196 | #else |
|
|
1197 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1198 | #endif |
|
|
1199 | |
|
|
1200 | #if ECB_CPP |
|
|
1201 | template<typename T> |
|
|
1202 | static inline T ecb_div_rd (T val, T div) |
|
|
1203 | { |
|
|
1204 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1205 | } |
|
|
1206 | template<typename T> |
|
|
1207 | static inline T ecb_div_ru (T val, T div) |
|
|
1208 | { |
|
|
1209 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1210 | } |
|
|
1211 | #else |
|
|
1212 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1213 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1214 | #endif |
|
|
1215 | |
|
|
1216 | #if ecb_cplusplus_does_not_suck |
|
|
1217 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1218 | template<typename T, int N> |
|
|
1219 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1220 | { |
|
|
1221 | return N; |
|
|
1222 | } |
|
|
1223 | #else |
|
|
1224 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1225 | #endif |
|
|
1226 | |
|
|
1227 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
1228 | ecb_function_ ecb_const uint32_t |
|
|
1229 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
1230 | { |
|
|
1231 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
1232 | int e = (x >> 10) & 0x001f; |
|
|
1233 | unsigned int m = x & 0x03ff; |
|
|
1234 | |
|
|
1235 | if (ecb_expect_false (e == 31)) |
|
|
1236 | /* infinity or NaN */ |
|
|
1237 | e = 255 - (127 - 15); |
|
|
1238 | else if (ecb_expect_false (!e)) |
|
|
1239 | { |
|
|
1240 | if (ecb_expect_true (!m)) |
|
|
1241 | /* zero, handled by code below by forcing e to 0 */ |
|
|
1242 | e = 0 - (127 - 15); |
|
|
1243 | else |
|
|
1244 | { |
|
|
1245 | /* subnormal, renormalise */ |
|
|
1246 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
1247 | |
|
|
1248 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
1249 | e -= s - 1; |
|
|
1250 | } |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
1254 | e += 127 - 15; |
|
|
1255 | |
|
|
1256 | return s | (e << 23) | (m << (23 - 10)); |
|
|
1257 | } |
|
|
1258 | |
|
|
1259 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
1260 | ecb_function_ ecb_const uint16_t |
|
|
1261 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
1262 | { |
|
|
1263 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
1264 | unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
1265 | unsigned int m = x & 0x007fffff; |
|
|
1266 | |
|
|
1267 | x &= 0x7fffffff; |
|
|
1268 | |
|
|
1269 | /* if it's within range of binary16 normals, use fast path */ |
|
|
1270 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
1271 | { |
|
|
1272 | /* mantissa round-to-even */ |
|
|
1273 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
1274 | |
|
|
1275 | /* handle overflow */ |
|
|
1276 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
1277 | { |
|
|
1278 | m >>= 1; |
|
|
1279 | e += 1; |
|
|
1280 | } |
|
|
1281 | |
|
|
1282 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
1283 | } |
|
|
1284 | |
|
|
1285 | /* handle large numbers and infinity */ |
|
|
1286 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
1287 | return s | 0x7c00; |
|
|
1288 | |
|
|
1289 | /* handle zero, subnormals and small numbers */ |
|
|
1290 | if (ecb_expect_true (x < 0x38800000)) |
|
|
1291 | { |
|
|
1292 | /* zero */ |
|
|
1293 | if (ecb_expect_true (!x)) |
|
|
1294 | return s; |
|
|
1295 | |
|
|
1296 | /* handle subnormals */ |
|
|
1297 | |
|
|
1298 | /* too small, will be zero */ |
|
|
1299 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
1300 | return s; |
|
|
1301 | |
|
|
1302 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
1303 | |
|
|
1304 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
1305 | { |
|
|
1306 | unsigned int bits = 14 - e; |
|
|
1307 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
1308 | unsigned int even = (m >> bits) & 1; |
|
|
1309 | |
|
|
1310 | /* if this overflows, we will end up with a normalised number */ |
|
|
1311 | m = (m + half + even) >> bits; |
|
|
1312 | } |
|
|
1313 | |
|
|
1314 | return s | m; |
|
|
1315 | } |
|
|
1316 | |
|
|
1317 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
1318 | m >>= 13; |
|
|
1319 | |
|
|
1320 | return s | 0x7c00 | m | !m; |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | /*******************************************************************************/ |
|
|
1324 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1325 | |
|
|
1326 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1327 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1328 | #if 0 \ |
|
|
1329 | || __i386 || __i386__ \ |
|
|
1330 | || ECB_GCC_AMD64 \ |
|
|
1331 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1332 | || defined __s390__ || defined __s390x__ \ |
|
|
1333 | || defined __mips__ \ |
|
|
1334 | || defined __alpha__ \ |
|
|
1335 | || defined __hppa__ \ |
|
|
1336 | || defined __ia64__ \ |
|
|
1337 | || defined __m68k__ \ |
|
|
1338 | || defined __m88k__ \ |
|
|
1339 | || defined __sh__ \ |
|
|
1340 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1341 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1342 | || defined __aarch64__ |
|
|
1343 | #define ECB_STDFP 1 |
|
|
1344 | #include <string.h> /* for memcpy */ |
|
|
1345 | #else |
|
|
1346 | #define ECB_STDFP 0 |
|
|
1347 | #endif |
|
|
1348 | |
|
|
1349 | #ifndef ECB_NO_LIBM |
|
|
1350 | |
|
|
1351 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1352 | |
|
|
1353 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1354 | #ifdef INFINITY |
|
|
1355 | #define ECB_INFINITY INFINITY |
|
|
1356 | #else |
|
|
1357 | #define ECB_INFINITY HUGE_VAL |
|
|
1358 | #endif |
|
|
1359 | |
|
|
1360 | #ifdef NAN |
|
|
1361 | #define ECB_NAN NAN |
|
|
1362 | #else |
|
|
1363 | #define ECB_NAN ECB_INFINITY |
|
|
1364 | #endif |
|
|
1365 | |
|
|
1366 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1367 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1368 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1369 | #else |
|
|
1370 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1371 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1372 | #endif |
|
|
1373 | |
|
|
1374 | /* convert a float to ieee single/binary32 */ |
|
|
1375 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1376 | ecb_function_ ecb_const uint32_t |
|
|
1377 | ecb_float_to_binary32 (float x) |
|
|
1378 | { |
|
|
1379 | uint32_t r; |
|
|
1380 | |
|
|
1381 | #if ECB_STDFP |
|
|
1382 | memcpy (&r, &x, 4); |
|
|
1383 | #else |
|
|
1384 | /* slow emulation, works for anything but -0 */ |
|
|
1385 | uint32_t m; |
|
|
1386 | int e; |
|
|
1387 | |
|
|
1388 | if (x == 0e0f ) return 0x00000000U; |
|
|
1389 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1390 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1391 | if (x != x ) return 0x7fbfffffU; |
|
|
1392 | |
|
|
1393 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1394 | |
|
|
1395 | r = m & 0x80000000U; |
|
|
1396 | |
|
|
1397 | if (r) |
|
|
1398 | m = -m; |
|
|
1399 | |
|
|
1400 | if (e <= -126) |
|
|
1401 | { |
|
|
1402 | m &= 0xffffffU; |
|
|
1403 | m >>= (-125 - e); |
|
|
1404 | e = -126; |
|
|
1405 | } |
|
|
1406 | |
|
|
1407 | r |= (e + 126) << 23; |
|
|
1408 | r |= m & 0x7fffffU; |
|
|
1409 | #endif |
|
|
1410 | |
|
|
1411 | return r; |
|
|
1412 | } |
|
|
1413 | |
|
|
1414 | /* converts an ieee single/binary32 to a float */ |
|
|
1415 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1416 | ecb_function_ ecb_const float |
|
|
1417 | ecb_binary32_to_float (uint32_t x) |
|
|
1418 | { |
|
|
1419 | float r; |
|
|
1420 | |
|
|
1421 | #if ECB_STDFP |
|
|
1422 | memcpy (&r, &x, 4); |
|
|
1423 | #else |
|
|
1424 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1425 | int neg = x >> 31; |
|
|
1426 | int e = (x >> 23) & 0xffU; |
|
|
1427 | |
|
|
1428 | x &= 0x7fffffU; |
|
|
1429 | |
|
|
1430 | if (e) |
|
|
1431 | x |= 0x800000U; |
|
|
1432 | else |
|
|
1433 | e = 1; |
|
|
1434 | |
|
|
1435 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1436 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1437 | |
|
|
1438 | r = neg ? -r : r; |
|
|
1439 | #endif |
|
|
1440 | |
|
|
1441 | return r; |
|
|
1442 | } |
|
|
1443 | |
|
|
1444 | /* convert a double to ieee double/binary64 */ |
|
|
1445 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1446 | ecb_function_ ecb_const uint64_t |
|
|
1447 | ecb_double_to_binary64 (double x) |
|
|
1448 | { |
|
|
1449 | uint64_t r; |
|
|
1450 | |
|
|
1451 | #if ECB_STDFP |
|
|
1452 | memcpy (&r, &x, 8); |
|
|
1453 | #else |
|
|
1454 | /* slow emulation, works for anything but -0 */ |
|
|
1455 | uint64_t m; |
|
|
1456 | int e; |
|
|
1457 | |
|
|
1458 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1459 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1460 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1461 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1462 | |
|
|
1463 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1464 | |
|
|
1465 | r = m & 0x8000000000000000;; |
|
|
1466 | |
|
|
1467 | if (r) |
|
|
1468 | m = -m; |
|
|
1469 | |
|
|
1470 | if (e <= -1022) |
|
|
1471 | { |
|
|
1472 | m &= 0x1fffffffffffffU; |
|
|
1473 | m >>= (-1021 - e); |
|
|
1474 | e = -1022; |
|
|
1475 | } |
|
|
1476 | |
|
|
1477 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1478 | r |= m & 0xfffffffffffffU; |
|
|
1479 | #endif |
|
|
1480 | |
|
|
1481 | return r; |
|
|
1482 | } |
|
|
1483 | |
|
|
1484 | /* converts an ieee double/binary64 to a double */ |
|
|
1485 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1486 | ecb_function_ ecb_const double |
|
|
1487 | ecb_binary64_to_double (uint64_t x) |
|
|
1488 | { |
|
|
1489 | double r; |
|
|
1490 | |
|
|
1491 | #if ECB_STDFP |
|
|
1492 | memcpy (&r, &x, 8); |
|
|
1493 | #else |
|
|
1494 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1495 | int neg = x >> 63; |
|
|
1496 | int e = (x >> 52) & 0x7ffU; |
|
|
1497 | |
|
|
1498 | x &= 0xfffffffffffffU; |
|
|
1499 | |
|
|
1500 | if (e) |
|
|
1501 | x |= 0x10000000000000U; |
|
|
1502 | else |
|
|
1503 | e = 1; |
|
|
1504 | |
|
|
1505 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1506 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1507 | |
|
|
1508 | r = neg ? -r : r; |
|
|
1509 | #endif |
|
|
1510 | |
|
|
1511 | return r; |
|
|
1512 | } |
|
|
1513 | |
|
|
1514 | /* convert a float to ieee half/binary16 */ |
|
|
1515 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1516 | ecb_function_ ecb_const uint16_t |
|
|
1517 | ecb_float_to_binary16 (float x) |
|
|
1518 | { |
|
|
1519 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | /* convert an ieee half/binary16 to float */ |
|
|
1523 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1524 | ecb_function_ ecb_const float |
|
|
1525 | ecb_binary16_to_float (uint16_t x) |
|
|
1526 | { |
|
|
1527 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1528 | } |
|
|
1529 | |
|
|
1530 | #endif |
|
|
1531 | |
|
|
1532 | #endif |
|
|
1533 | |
|
|
1534 | /* ECB.H END */ |
|
|
1535 | |
|
|
1536 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1537 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1538 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1539 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
1540 | * libev, in which cases the memory fences become nops. |
|
|
1541 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1542 | * which will then provide the memory fences. |
|
|
1543 | */ |
|
|
1544 | # error "memory fences not defined for your architecture, please report" |
|
|
1545 | #endif |
|
|
1546 | |
|
|
1547 | #ifndef ECB_MEMORY_FENCE |
|
|
1548 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1549 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1550 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1551 | #endif |
|
|
1552 | |
|
|
1553 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1554 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1555 | #define noinline ecb_noinline |
|
|
1556 | |
475 | #define inline_size static inline |
1557 | #define inline_size ecb_inline |
476 | |
1558 | |
477 | #if EV_FEATURE_CODE |
1559 | #if EV_FEATURE_CODE |
478 | # define inline_speed static inline |
1560 | # define inline_speed ecb_inline |
479 | #else |
1561 | #else |
480 | # define inline_speed static noinline |
1562 | # define inline_speed noinline static |
481 | #endif |
1563 | #endif |
482 | |
1564 | |
483 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
1565 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
484 | |
1566 | |
485 | #if EV_MINPRI == EV_MAXPRI |
1567 | #if EV_MINPRI == EV_MAXPRI |
486 | # define ABSPRI(w) (((W)w), 0) |
1568 | # define ABSPRI(w) (((W)w), 0) |
487 | #else |
1569 | #else |
488 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
1570 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
489 | #endif |
1571 | #endif |
490 | |
1572 | |
491 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
1573 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
492 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
493 | |
1574 | |
494 | typedef ev_watcher *W; |
1575 | typedef ev_watcher *W; |
495 | typedef ev_watcher_list *WL; |
1576 | typedef ev_watcher_list *WL; |
496 | typedef ev_watcher_time *WT; |
1577 | typedef ev_watcher_time *WT; |
497 | |
1578 | |
… | |
… | |
522 | # include "ev_win32.c" |
1603 | # include "ev_win32.c" |
523 | #endif |
1604 | #endif |
524 | |
1605 | |
525 | /*****************************************************************************/ |
1606 | /*****************************************************************************/ |
526 | |
1607 | |
|
|
1608 | #if EV_USE_LINUXAIO |
|
|
1609 | # include <linux/aio_abi.h> /* probably only needed for aio_context_t */ |
|
|
1610 | #endif |
|
|
1611 | |
|
|
1612 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1613 | |
|
|
1614 | #if EV_USE_FLOOR |
|
|
1615 | # include <math.h> |
|
|
1616 | # define ev_floor(v) floor (v) |
|
|
1617 | #else |
|
|
1618 | |
|
|
1619 | #include <float.h> |
|
|
1620 | |
|
|
1621 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1622 | noinline |
|
|
1623 | static ev_tstamp |
|
|
1624 | ev_floor (ev_tstamp v) |
|
|
1625 | { |
|
|
1626 | /* the choice of shift factor is not terribly important */ |
|
|
1627 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1628 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1629 | #else |
|
|
1630 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1631 | #endif |
|
|
1632 | |
|
|
1633 | /* argument too large for an unsigned long? */ |
|
|
1634 | if (expect_false (v >= shift)) |
|
|
1635 | { |
|
|
1636 | ev_tstamp f; |
|
|
1637 | |
|
|
1638 | if (v == v - 1.) |
|
|
1639 | return v; /* very large number */ |
|
|
1640 | |
|
|
1641 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1642 | return f + ev_floor (v - f); |
|
|
1643 | } |
|
|
1644 | |
|
|
1645 | /* special treatment for negative args? */ |
|
|
1646 | if (expect_false (v < 0.)) |
|
|
1647 | { |
|
|
1648 | ev_tstamp f = -ev_floor (-v); |
|
|
1649 | |
|
|
1650 | return f - (f == v ? 0 : 1); |
|
|
1651 | } |
|
|
1652 | |
|
|
1653 | /* fits into an unsigned long */ |
|
|
1654 | return (unsigned long)v; |
|
|
1655 | } |
|
|
1656 | |
|
|
1657 | #endif |
|
|
1658 | |
|
|
1659 | /*****************************************************************************/ |
|
|
1660 | |
527 | #ifdef __linux |
1661 | #ifdef __linux |
528 | # include <sys/utsname.h> |
1662 | # include <sys/utsname.h> |
529 | #endif |
1663 | #endif |
530 | |
1664 | |
|
|
1665 | noinline ecb_cold |
531 | static unsigned int noinline |
1666 | static unsigned int |
532 | ev_linux_version (void) |
1667 | ev_linux_version (void) |
533 | { |
1668 | { |
534 | #ifdef __linux |
1669 | #ifdef __linux |
|
|
1670 | unsigned int v = 0; |
535 | struct utsname buf; |
1671 | struct utsname buf; |
536 | unsigned int v; |
|
|
537 | int i; |
1672 | int i; |
538 | char *p = buf.release; |
1673 | char *p = buf.release; |
539 | |
1674 | |
540 | if (uname (&buf)) |
1675 | if (uname (&buf)) |
541 | return 0; |
1676 | return 0; |
… | |
… | |
565 | } |
1700 | } |
566 | |
1701 | |
567 | /*****************************************************************************/ |
1702 | /*****************************************************************************/ |
568 | |
1703 | |
569 | #if EV_AVOID_STDIO |
1704 | #if EV_AVOID_STDIO |
570 | static void noinline |
1705 | noinline ecb_cold |
|
|
1706 | static void |
571 | ev_printerr (const char *msg) |
1707 | ev_printerr (const char *msg) |
572 | { |
1708 | { |
573 | write (STDERR_FILENO, msg, strlen (msg)); |
1709 | write (STDERR_FILENO, msg, strlen (msg)); |
574 | } |
1710 | } |
575 | #endif |
1711 | #endif |
576 | |
1712 | |
577 | static void (*syserr_cb)(const char *msg); |
1713 | static void (*syserr_cb)(const char *msg) EV_NOEXCEPT; |
578 | |
1714 | |
|
|
1715 | ecb_cold |
579 | void |
1716 | void |
580 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1717 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT |
581 | { |
1718 | { |
582 | syserr_cb = cb; |
1719 | syserr_cb = cb; |
583 | } |
1720 | } |
584 | |
1721 | |
585 | static void noinline |
1722 | noinline ecb_cold |
|
|
1723 | static void |
586 | ev_syserr (const char *msg) |
1724 | ev_syserr (const char *msg) |
587 | { |
1725 | { |
588 | if (!msg) |
1726 | if (!msg) |
589 | msg = "(libev) system error"; |
1727 | msg = "(libev) system error"; |
590 | |
1728 | |
591 | if (syserr_cb) |
1729 | if (syserr_cb) |
592 | syserr_cb (msg); |
1730 | syserr_cb (msg); |
593 | else |
1731 | else |
594 | { |
1732 | { |
595 | #if EV_AVOID_STDIO |
1733 | #if EV_AVOID_STDIO |
596 | const char *err = strerror (errno); |
|
|
597 | |
|
|
598 | ev_printerr (msg); |
1734 | ev_printerr (msg); |
599 | ev_printerr (": "); |
1735 | ev_printerr (": "); |
600 | ev_printerr (err); |
1736 | ev_printerr (strerror (errno)); |
601 | ev_printerr ("\n"); |
1737 | ev_printerr ("\n"); |
602 | #else |
1738 | #else |
603 | perror (msg); |
1739 | perror (msg); |
604 | #endif |
1740 | #endif |
605 | abort (); |
1741 | abort (); |
606 | } |
1742 | } |
607 | } |
1743 | } |
608 | |
1744 | |
609 | static void * |
1745 | static void * |
610 | ev_realloc_emul (void *ptr, long size) |
1746 | ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT |
611 | { |
1747 | { |
612 | #if __GLIBC__ |
|
|
613 | return realloc (ptr, size); |
|
|
614 | #else |
|
|
615 | /* some systems, notably openbsd and darwin, fail to properly |
1748 | /* some systems, notably openbsd and darwin, fail to properly |
616 | * implement realloc (x, 0) (as required by both ansi c-89 and |
1749 | * implement realloc (x, 0) (as required by both ansi c-89 and |
617 | * the single unix specification, so work around them here. |
1750 | * the single unix specification, so work around them here. |
|
|
1751 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1752 | * despite documenting it otherwise. |
618 | */ |
1753 | */ |
619 | |
1754 | |
620 | if (size) |
1755 | if (size) |
621 | return realloc (ptr, size); |
1756 | return realloc (ptr, size); |
622 | |
1757 | |
623 | free (ptr); |
1758 | free (ptr); |
624 | return 0; |
1759 | return 0; |
625 | #endif |
|
|
626 | } |
1760 | } |
627 | |
1761 | |
628 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
1762 | static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul; |
629 | |
1763 | |
|
|
1764 | ecb_cold |
630 | void |
1765 | void |
631 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1766 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT |
632 | { |
1767 | { |
633 | alloc = cb; |
1768 | alloc = cb; |
634 | } |
1769 | } |
635 | |
1770 | |
636 | inline_speed void * |
1771 | inline_speed void * |
… | |
… | |
639 | ptr = alloc (ptr, size); |
1774 | ptr = alloc (ptr, size); |
640 | |
1775 | |
641 | if (!ptr && size) |
1776 | if (!ptr && size) |
642 | { |
1777 | { |
643 | #if EV_AVOID_STDIO |
1778 | #if EV_AVOID_STDIO |
644 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
1779 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
645 | #else |
1780 | #else |
646 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
1781 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
647 | #endif |
1782 | #endif |
648 | abort (); |
1783 | abort (); |
649 | } |
1784 | } |
650 | |
1785 | |
651 | return ptr; |
1786 | return ptr; |
… | |
… | |
663 | typedef struct |
1798 | typedef struct |
664 | { |
1799 | { |
665 | WL head; |
1800 | WL head; |
666 | unsigned char events; /* the events watched for */ |
1801 | unsigned char events; /* the events watched for */ |
667 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
1802 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
668 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
1803 | unsigned char emask; /* some backends store the actual kernel mask in here */ |
669 | unsigned char unused; |
1804 | unsigned char unused; |
670 | #if EV_USE_EPOLL |
1805 | #if EV_USE_EPOLL |
671 | unsigned int egen; /* generation counter to counter epoll bugs */ |
1806 | unsigned int egen; /* generation counter to counter epoll bugs */ |
672 | #endif |
1807 | #endif |
673 | #if EV_SELECT_IS_WINSOCKET |
1808 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
674 | SOCKET handle; |
1809 | SOCKET handle; |
|
|
1810 | #endif |
|
|
1811 | #if EV_USE_IOCP |
|
|
1812 | OVERLAPPED or, ow; |
675 | #endif |
1813 | #endif |
676 | } ANFD; |
1814 | } ANFD; |
677 | |
1815 | |
678 | /* stores the pending event set for a given watcher */ |
1816 | /* stores the pending event set for a given watcher */ |
679 | typedef struct |
1817 | typedef struct |
… | |
… | |
721 | #undef VAR |
1859 | #undef VAR |
722 | }; |
1860 | }; |
723 | #include "ev_wrap.h" |
1861 | #include "ev_wrap.h" |
724 | |
1862 | |
725 | static struct ev_loop default_loop_struct; |
1863 | static struct ev_loop default_loop_struct; |
726 | struct ev_loop *ev_default_loop_ptr; |
1864 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
727 | |
1865 | |
728 | #else |
1866 | #else |
729 | |
1867 | |
730 | ev_tstamp ev_rt_now; |
1868 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
731 | #define VAR(name,decl) static decl; |
1869 | #define VAR(name,decl) static decl; |
732 | #include "ev_vars.h" |
1870 | #include "ev_vars.h" |
733 | #undef VAR |
1871 | #undef VAR |
734 | |
1872 | |
735 | static int ev_default_loop_ptr; |
1873 | static int ev_default_loop_ptr; |
… | |
… | |
750 | |
1888 | |
751 | /*****************************************************************************/ |
1889 | /*****************************************************************************/ |
752 | |
1890 | |
753 | #ifndef EV_HAVE_EV_TIME |
1891 | #ifndef EV_HAVE_EV_TIME |
754 | ev_tstamp |
1892 | ev_tstamp |
755 | ev_time (void) |
1893 | ev_time (void) EV_NOEXCEPT |
756 | { |
1894 | { |
757 | #if EV_USE_REALTIME |
1895 | #if EV_USE_REALTIME |
758 | if (expect_true (have_realtime)) |
1896 | if (expect_true (have_realtime)) |
759 | { |
1897 | { |
760 | struct timespec ts; |
1898 | struct timespec ts; |
… | |
… | |
784 | return ev_time (); |
1922 | return ev_time (); |
785 | } |
1923 | } |
786 | |
1924 | |
787 | #if EV_MULTIPLICITY |
1925 | #if EV_MULTIPLICITY |
788 | ev_tstamp |
1926 | ev_tstamp |
789 | ev_now (EV_P) |
1927 | ev_now (EV_P) EV_NOEXCEPT |
790 | { |
1928 | { |
791 | return ev_rt_now; |
1929 | return ev_rt_now; |
792 | } |
1930 | } |
793 | #endif |
1931 | #endif |
794 | |
1932 | |
795 | void |
1933 | void |
796 | ev_sleep (ev_tstamp delay) |
1934 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
797 | { |
1935 | { |
798 | if (delay > 0.) |
1936 | if (delay > 0.) |
799 | { |
1937 | { |
800 | #if EV_USE_NANOSLEEP |
1938 | #if EV_USE_NANOSLEEP |
801 | struct timespec ts; |
1939 | struct timespec ts; |
802 | |
1940 | |
803 | EV_TS_SET (ts, delay); |
1941 | EV_TS_SET (ts, delay); |
804 | nanosleep (&ts, 0); |
1942 | nanosleep (&ts, 0); |
805 | #elif defined(_WIN32) |
1943 | #elif defined _WIN32 |
|
|
1944 | /* maybe this should round up, as ms is very low resolution */ |
|
|
1945 | /* compared to select (µs) or nanosleep (ns) */ |
806 | Sleep ((unsigned long)(delay * 1e3)); |
1946 | Sleep ((unsigned long)(delay * 1e3)); |
807 | #else |
1947 | #else |
808 | struct timeval tv; |
1948 | struct timeval tv; |
809 | |
1949 | |
810 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
1950 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
… | |
… | |
829 | |
1969 | |
830 | do |
1970 | do |
831 | ncur <<= 1; |
1971 | ncur <<= 1; |
832 | while (cnt > ncur); |
1972 | while (cnt > ncur); |
833 | |
1973 | |
834 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
1974 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
835 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
1975 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
836 | { |
1976 | { |
837 | ncur *= elem; |
1977 | ncur *= elem; |
838 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
1978 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
839 | ncur = ncur - sizeof (void *) * 4; |
1979 | ncur = ncur - sizeof (void *) * 4; |
… | |
… | |
841 | } |
1981 | } |
842 | |
1982 | |
843 | return ncur; |
1983 | return ncur; |
844 | } |
1984 | } |
845 | |
1985 | |
846 | static noinline void * |
1986 | noinline ecb_cold |
|
|
1987 | static void * |
847 | array_realloc (int elem, void *base, int *cur, int cnt) |
1988 | array_realloc (int elem, void *base, int *cur, int cnt) |
848 | { |
1989 | { |
849 | *cur = array_nextsize (elem, *cur, cnt); |
1990 | *cur = array_nextsize (elem, *cur, cnt); |
850 | return ev_realloc (base, elem * *cur); |
1991 | return ev_realloc (base, elem * *cur); |
851 | } |
1992 | } |
852 | |
1993 | |
|
|
1994 | #define array_needsize_noinit(base,count) |
|
|
1995 | |
853 | #define array_init_zero(base,count) \ |
1996 | #define array_needsize_zerofill(base,count) \ |
854 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1997 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
855 | |
1998 | |
856 | #define array_needsize(type,base,cur,cnt,init) \ |
1999 | #define array_needsize(type,base,cur,cnt,init) \ |
857 | if (expect_false ((cnt) > (cur))) \ |
2000 | if (expect_false ((cnt) > (cur))) \ |
858 | { \ |
2001 | { \ |
859 | int ocur_ = (cur); \ |
2002 | ecb_unused int ocur_ = (cur); \ |
860 | (base) = (type *)array_realloc \ |
2003 | (base) = (type *)array_realloc \ |
861 | (sizeof (type), (base), &(cur), (cnt)); \ |
2004 | (sizeof (type), (base), &(cur), (cnt)); \ |
862 | init ((base) + (ocur_), (cur) - ocur_); \ |
2005 | init ((base) + (ocur_), (cur) - ocur_); \ |
863 | } |
2006 | } |
864 | |
2007 | |
… | |
… | |
876 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
2019 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
877 | |
2020 | |
878 | /*****************************************************************************/ |
2021 | /*****************************************************************************/ |
879 | |
2022 | |
880 | /* dummy callback for pending events */ |
2023 | /* dummy callback for pending events */ |
881 | static void noinline |
2024 | noinline |
|
|
2025 | static void |
882 | pendingcb (EV_P_ ev_prepare *w, int revents) |
2026 | pendingcb (EV_P_ ev_prepare *w, int revents) |
883 | { |
2027 | { |
884 | } |
2028 | } |
885 | |
2029 | |
886 | void noinline |
2030 | noinline |
|
|
2031 | void |
887 | ev_feed_event (EV_P_ void *w, int revents) |
2032 | ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT |
888 | { |
2033 | { |
889 | W w_ = (W)w; |
2034 | W w_ = (W)w; |
890 | int pri = ABSPRI (w_); |
2035 | int pri = ABSPRI (w_); |
891 | |
2036 | |
892 | if (expect_false (w_->pending)) |
2037 | if (expect_false (w_->pending)) |
893 | pendings [pri][w_->pending - 1].events |= revents; |
2038 | pendings [pri][w_->pending - 1].events |= revents; |
894 | else |
2039 | else |
895 | { |
2040 | { |
896 | w_->pending = ++pendingcnt [pri]; |
2041 | w_->pending = ++pendingcnt [pri]; |
897 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
2042 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit); |
898 | pendings [pri][w_->pending - 1].w = w_; |
2043 | pendings [pri][w_->pending - 1].w = w_; |
899 | pendings [pri][w_->pending - 1].events = revents; |
2044 | pendings [pri][w_->pending - 1].events = revents; |
900 | } |
2045 | } |
|
|
2046 | |
|
|
2047 | pendingpri = NUMPRI - 1; |
901 | } |
2048 | } |
902 | |
2049 | |
903 | inline_speed void |
2050 | inline_speed void |
904 | feed_reverse (EV_P_ W w) |
2051 | feed_reverse (EV_P_ W w) |
905 | { |
2052 | { |
906 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
2053 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit); |
907 | rfeeds [rfeedcnt++] = w; |
2054 | rfeeds [rfeedcnt++] = w; |
908 | } |
2055 | } |
909 | |
2056 | |
910 | inline_size void |
2057 | inline_size void |
911 | feed_reverse_done (EV_P_ int revents) |
2058 | feed_reverse_done (EV_P_ int revents) |
… | |
… | |
951 | if (expect_true (!anfd->reify)) |
2098 | if (expect_true (!anfd->reify)) |
952 | fd_event_nocheck (EV_A_ fd, revents); |
2099 | fd_event_nocheck (EV_A_ fd, revents); |
953 | } |
2100 | } |
954 | |
2101 | |
955 | void |
2102 | void |
956 | ev_feed_fd_event (EV_P_ int fd, int revents) |
2103 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT |
957 | { |
2104 | { |
958 | if (fd >= 0 && fd < anfdmax) |
2105 | if (fd >= 0 && fd < anfdmax) |
959 | fd_event_nocheck (EV_A_ fd, revents); |
2106 | fd_event_nocheck (EV_A_ fd, revents); |
960 | } |
2107 | } |
961 | |
2108 | |
… | |
… | |
964 | inline_size void |
2111 | inline_size void |
965 | fd_reify (EV_P) |
2112 | fd_reify (EV_P) |
966 | { |
2113 | { |
967 | int i; |
2114 | int i; |
968 | |
2115 | |
|
|
2116 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
2117 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2118 | { |
|
|
2119 | int fd = fdchanges [i]; |
|
|
2120 | ANFD *anfd = anfds + fd; |
|
|
2121 | |
|
|
2122 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
2123 | { |
|
|
2124 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
2125 | |
|
|
2126 | if (handle != anfd->handle) |
|
|
2127 | { |
|
|
2128 | unsigned long arg; |
|
|
2129 | |
|
|
2130 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
2131 | |
|
|
2132 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
2133 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
2134 | anfd->events = 0; |
|
|
2135 | anfd->handle = handle; |
|
|
2136 | } |
|
|
2137 | } |
|
|
2138 | } |
|
|
2139 | #endif |
|
|
2140 | |
969 | for (i = 0; i < fdchangecnt; ++i) |
2141 | for (i = 0; i < fdchangecnt; ++i) |
970 | { |
2142 | { |
971 | int fd = fdchanges [i]; |
2143 | int fd = fdchanges [i]; |
972 | ANFD *anfd = anfds + fd; |
2144 | ANFD *anfd = anfds + fd; |
973 | ev_io *w; |
2145 | ev_io *w; |
… | |
… | |
975 | unsigned char o_events = anfd->events; |
2147 | unsigned char o_events = anfd->events; |
976 | unsigned char o_reify = anfd->reify; |
2148 | unsigned char o_reify = anfd->reify; |
977 | |
2149 | |
978 | anfd->reify = 0; |
2150 | anfd->reify = 0; |
979 | |
2151 | |
980 | #if EV_SELECT_IS_WINSOCKET |
|
|
981 | if (o_reify & EV__IOFDSET) |
|
|
982 | { |
|
|
983 | unsigned long arg; |
|
|
984 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
985 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
986 | } |
|
|
987 | #endif |
|
|
988 | |
|
|
989 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
2152 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
990 | { |
2153 | { |
991 | anfd->events = 0; |
2154 | anfd->events = 0; |
992 | |
2155 | |
993 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
2156 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
1003 | |
2166 | |
1004 | fdchangecnt = 0; |
2167 | fdchangecnt = 0; |
1005 | } |
2168 | } |
1006 | |
2169 | |
1007 | /* something about the given fd changed */ |
2170 | /* something about the given fd changed */ |
1008 | inline_size void |
2171 | inline_size |
|
|
2172 | void |
1009 | fd_change (EV_P_ int fd, int flags) |
2173 | fd_change (EV_P_ int fd, int flags) |
1010 | { |
2174 | { |
1011 | unsigned char reify = anfds [fd].reify; |
2175 | unsigned char reify = anfds [fd].reify; |
1012 | anfds [fd].reify |= flags; |
2176 | anfds [fd].reify |= flags; |
1013 | |
2177 | |
1014 | if (expect_true (!reify)) |
2178 | if (expect_true (!reify)) |
1015 | { |
2179 | { |
1016 | ++fdchangecnt; |
2180 | ++fdchangecnt; |
1017 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
2181 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); |
1018 | fdchanges [fdchangecnt - 1] = fd; |
2182 | fdchanges [fdchangecnt - 1] = fd; |
1019 | } |
2183 | } |
1020 | } |
2184 | } |
1021 | |
2185 | |
1022 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
2186 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1023 | inline_speed void |
2187 | inline_speed ecb_cold void |
1024 | fd_kill (EV_P_ int fd) |
2188 | fd_kill (EV_P_ int fd) |
1025 | { |
2189 | { |
1026 | ev_io *w; |
2190 | ev_io *w; |
1027 | |
2191 | |
1028 | while ((w = (ev_io *)anfds [fd].head)) |
2192 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
1031 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
2195 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1032 | } |
2196 | } |
1033 | } |
2197 | } |
1034 | |
2198 | |
1035 | /* check whether the given fd is actually valid, for error recovery */ |
2199 | /* check whether the given fd is actually valid, for error recovery */ |
1036 | inline_size int |
2200 | inline_size ecb_cold int |
1037 | fd_valid (int fd) |
2201 | fd_valid (int fd) |
1038 | { |
2202 | { |
1039 | #ifdef _WIN32 |
2203 | #ifdef _WIN32 |
1040 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
2204 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1041 | #else |
2205 | #else |
1042 | return fcntl (fd, F_GETFD) != -1; |
2206 | return fcntl (fd, F_GETFD) != -1; |
1043 | #endif |
2207 | #endif |
1044 | } |
2208 | } |
1045 | |
2209 | |
1046 | /* called on EBADF to verify fds */ |
2210 | /* called on EBADF to verify fds */ |
1047 | static void noinline |
2211 | noinline ecb_cold |
|
|
2212 | static void |
1048 | fd_ebadf (EV_P) |
2213 | fd_ebadf (EV_P) |
1049 | { |
2214 | { |
1050 | int fd; |
2215 | int fd; |
1051 | |
2216 | |
1052 | for (fd = 0; fd < anfdmax; ++fd) |
2217 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1054 | if (!fd_valid (fd) && errno == EBADF) |
2219 | if (!fd_valid (fd) && errno == EBADF) |
1055 | fd_kill (EV_A_ fd); |
2220 | fd_kill (EV_A_ fd); |
1056 | } |
2221 | } |
1057 | |
2222 | |
1058 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
2223 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1059 | static void noinline |
2224 | noinline ecb_cold |
|
|
2225 | static void |
1060 | fd_enomem (EV_P) |
2226 | fd_enomem (EV_P) |
1061 | { |
2227 | { |
1062 | int fd; |
2228 | int fd; |
1063 | |
2229 | |
1064 | for (fd = anfdmax; fd--; ) |
2230 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1068 | break; |
2234 | break; |
1069 | } |
2235 | } |
1070 | } |
2236 | } |
1071 | |
2237 | |
1072 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
2238 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
1073 | static void noinline |
2239 | noinline |
|
|
2240 | static void |
1074 | fd_rearm_all (EV_P) |
2241 | fd_rearm_all (EV_P) |
1075 | { |
2242 | { |
1076 | int fd; |
2243 | int fd; |
1077 | |
2244 | |
1078 | for (fd = 0; fd < anfdmax; ++fd) |
2245 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1259 | |
2426 | |
1260 | /*****************************************************************************/ |
2427 | /*****************************************************************************/ |
1261 | |
2428 | |
1262 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2429 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1263 | |
2430 | |
1264 | static void noinline |
2431 | noinline ecb_cold |
|
|
2432 | static void |
1265 | evpipe_init (EV_P) |
2433 | evpipe_init (EV_P) |
1266 | { |
2434 | { |
1267 | if (!ev_is_active (&pipe_w)) |
2435 | if (!ev_is_active (&pipe_w)) |
1268 | { |
2436 | { |
|
|
2437 | int fds [2]; |
|
|
2438 | |
1269 | # if EV_USE_EVENTFD |
2439 | # if EV_USE_EVENTFD |
|
|
2440 | fds [0] = -1; |
1270 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
2441 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1271 | if (evfd < 0 && errno == EINVAL) |
2442 | if (fds [1] < 0 && errno == EINVAL) |
1272 | evfd = eventfd (0, 0); |
2443 | fds [1] = eventfd (0, 0); |
1273 | |
2444 | |
1274 | if (evfd >= 0) |
2445 | if (fds [1] < 0) |
|
|
2446 | # endif |
1275 | { |
2447 | { |
|
|
2448 | while (pipe (fds)) |
|
|
2449 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
2450 | |
|
|
2451 | fd_intern (fds [0]); |
|
|
2452 | } |
|
|
2453 | |
1276 | evpipe [0] = -1; |
2454 | evpipe [0] = fds [0]; |
1277 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
2455 | |
1278 | ev_io_set (&pipe_w, evfd, EV_READ); |
2456 | if (evpipe [1] < 0) |
|
|
2457 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2458 | else |
|
|
2459 | { |
|
|
2460 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2461 | /* so that evpipe_write can always rely on its value. */ |
|
|
2462 | /* this branch does not do anything sensible on windows, */ |
|
|
2463 | /* so must not be executed on windows */ |
|
|
2464 | |
|
|
2465 | dup2 (fds [1], evpipe [1]); |
|
|
2466 | close (fds [1]); |
|
|
2467 | } |
|
|
2468 | |
|
|
2469 | fd_intern (evpipe [1]); |
|
|
2470 | |
|
|
2471 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2472 | ev_io_start (EV_A_ &pipe_w); |
|
|
2473 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2474 | } |
|
|
2475 | } |
|
|
2476 | |
|
|
2477 | inline_speed void |
|
|
2478 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
2479 | { |
|
|
2480 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2481 | |
|
|
2482 | if (expect_true (*flag)) |
|
|
2483 | return; |
|
|
2484 | |
|
|
2485 | *flag = 1; |
|
|
2486 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2487 | |
|
|
2488 | pipe_write_skipped = 1; |
|
|
2489 | |
|
|
2490 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2491 | |
|
|
2492 | if (pipe_write_wanted) |
|
|
2493 | { |
|
|
2494 | int old_errno; |
|
|
2495 | |
|
|
2496 | pipe_write_skipped = 0; |
|
|
2497 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2498 | |
|
|
2499 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2500 | |
|
|
2501 | #if EV_USE_EVENTFD |
|
|
2502 | if (evpipe [0] < 0) |
|
|
2503 | { |
|
|
2504 | uint64_t counter = 1; |
|
|
2505 | write (evpipe [1], &counter, sizeof (uint64_t)); |
1279 | } |
2506 | } |
1280 | else |
2507 | else |
1281 | # endif |
2508 | #endif |
1282 | { |
2509 | { |
1283 | while (pipe (evpipe)) |
2510 | #ifdef _WIN32 |
1284 | ev_syserr ("(libev) error creating signal/async pipe"); |
2511 | WSABUF buf; |
1285 | |
2512 | DWORD sent; |
1286 | fd_intern (evpipe [0]); |
2513 | buf.buf = (char *)&buf; |
1287 | fd_intern (evpipe [1]); |
2514 | buf.len = 1; |
1288 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
2515 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2516 | #else |
|
|
2517 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2518 | #endif |
1289 | } |
2519 | } |
1290 | |
|
|
1291 | ev_io_start (EV_A_ &pipe_w); |
|
|
1292 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1293 | } |
|
|
1294 | } |
|
|
1295 | |
|
|
1296 | inline_size void |
|
|
1297 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1298 | { |
|
|
1299 | if (!*flag) |
|
|
1300 | { |
|
|
1301 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1302 | char dummy; |
|
|
1303 | |
|
|
1304 | *flag = 1; |
|
|
1305 | |
|
|
1306 | #if EV_USE_EVENTFD |
|
|
1307 | if (evfd >= 0) |
|
|
1308 | { |
|
|
1309 | uint64_t counter = 1; |
|
|
1310 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1311 | } |
|
|
1312 | else |
|
|
1313 | #endif |
|
|
1314 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1315 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1316 | /* so when you think this write should be a send instead, please find out */ |
|
|
1317 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1318 | /* tell me. thank you. */ |
|
|
1319 | write (evpipe [1], &dummy, 1); |
|
|
1320 | |
2520 | |
1321 | errno = old_errno; |
2521 | errno = old_errno; |
1322 | } |
2522 | } |
1323 | } |
2523 | } |
1324 | |
2524 | |
… | |
… | |
1327 | static void |
2527 | static void |
1328 | pipecb (EV_P_ ev_io *iow, int revents) |
2528 | pipecb (EV_P_ ev_io *iow, int revents) |
1329 | { |
2529 | { |
1330 | int i; |
2530 | int i; |
1331 | |
2531 | |
|
|
2532 | if (revents & EV_READ) |
|
|
2533 | { |
1332 | #if EV_USE_EVENTFD |
2534 | #if EV_USE_EVENTFD |
1333 | if (evfd >= 0) |
2535 | if (evpipe [0] < 0) |
1334 | { |
2536 | { |
1335 | uint64_t counter; |
2537 | uint64_t counter; |
1336 | read (evfd, &counter, sizeof (uint64_t)); |
2538 | read (evpipe [1], &counter, sizeof (uint64_t)); |
1337 | } |
2539 | } |
1338 | else |
2540 | else |
1339 | #endif |
2541 | #endif |
1340 | { |
2542 | { |
1341 | char dummy; |
2543 | char dummy[4]; |
1342 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
2544 | #ifdef _WIN32 |
|
|
2545 | WSABUF buf; |
|
|
2546 | DWORD recvd; |
|
|
2547 | DWORD flags = 0; |
|
|
2548 | buf.buf = dummy; |
|
|
2549 | buf.len = sizeof (dummy); |
|
|
2550 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2551 | #else |
1343 | read (evpipe [0], &dummy, 1); |
2552 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2553 | #endif |
|
|
2554 | } |
1344 | } |
2555 | } |
1345 | |
2556 | |
|
|
2557 | pipe_write_skipped = 0; |
|
|
2558 | |
|
|
2559 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2560 | |
|
|
2561 | #if EV_SIGNAL_ENABLE |
1346 | if (sig_pending) |
2562 | if (sig_pending) |
1347 | { |
2563 | { |
1348 | sig_pending = 0; |
2564 | sig_pending = 0; |
|
|
2565 | |
|
|
2566 | ECB_MEMORY_FENCE; |
1349 | |
2567 | |
1350 | for (i = EV_NSIG - 1; i--; ) |
2568 | for (i = EV_NSIG - 1; i--; ) |
1351 | if (expect_false (signals [i].pending)) |
2569 | if (expect_false (signals [i].pending)) |
1352 | ev_feed_signal_event (EV_A_ i + 1); |
2570 | ev_feed_signal_event (EV_A_ i + 1); |
1353 | } |
2571 | } |
|
|
2572 | #endif |
1354 | |
2573 | |
1355 | #if EV_ASYNC_ENABLE |
2574 | #if EV_ASYNC_ENABLE |
1356 | if (async_pending) |
2575 | if (async_pending) |
1357 | { |
2576 | { |
1358 | async_pending = 0; |
2577 | async_pending = 0; |
|
|
2578 | |
|
|
2579 | ECB_MEMORY_FENCE; |
1359 | |
2580 | |
1360 | for (i = asynccnt; i--; ) |
2581 | for (i = asynccnt; i--; ) |
1361 | if (asyncs [i]->sent) |
2582 | if (asyncs [i]->sent) |
1362 | { |
2583 | { |
1363 | asyncs [i]->sent = 0; |
2584 | asyncs [i]->sent = 0; |
|
|
2585 | ECB_MEMORY_FENCE_RELEASE; |
1364 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
2586 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
1365 | } |
2587 | } |
1366 | } |
2588 | } |
1367 | #endif |
2589 | #endif |
1368 | } |
2590 | } |
1369 | |
2591 | |
1370 | /*****************************************************************************/ |
2592 | /*****************************************************************************/ |
1371 | |
2593 | |
|
|
2594 | void |
|
|
2595 | ev_feed_signal (int signum) EV_NOEXCEPT |
|
|
2596 | { |
|
|
2597 | #if EV_MULTIPLICITY |
|
|
2598 | EV_P; |
|
|
2599 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2600 | EV_A = signals [signum - 1].loop; |
|
|
2601 | |
|
|
2602 | if (!EV_A) |
|
|
2603 | return; |
|
|
2604 | #endif |
|
|
2605 | |
|
|
2606 | signals [signum - 1].pending = 1; |
|
|
2607 | evpipe_write (EV_A_ &sig_pending); |
|
|
2608 | } |
|
|
2609 | |
1372 | static void |
2610 | static void |
1373 | ev_sighandler (int signum) |
2611 | ev_sighandler (int signum) |
1374 | { |
2612 | { |
1375 | #if EV_MULTIPLICITY |
|
|
1376 | EV_P = signals [signum - 1].loop; |
|
|
1377 | #endif |
|
|
1378 | |
|
|
1379 | #ifdef _WIN32 |
2613 | #ifdef _WIN32 |
1380 | signal (signum, ev_sighandler); |
2614 | signal (signum, ev_sighandler); |
1381 | #endif |
2615 | #endif |
1382 | |
2616 | |
1383 | signals [signum - 1].pending = 1; |
2617 | ev_feed_signal (signum); |
1384 | evpipe_write (EV_A_ &sig_pending); |
|
|
1385 | } |
2618 | } |
1386 | |
2619 | |
1387 | void noinline |
2620 | noinline |
|
|
2621 | void |
1388 | ev_feed_signal_event (EV_P_ int signum) |
2622 | ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT |
1389 | { |
2623 | { |
1390 | WL w; |
2624 | WL w; |
1391 | |
2625 | |
1392 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
2626 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
1393 | return; |
2627 | return; |
1394 | |
2628 | |
1395 | --signum; |
2629 | --signum; |
1396 | |
2630 | |
1397 | #if EV_MULTIPLICITY |
2631 | #if EV_MULTIPLICITY |
… | |
… | |
1401 | if (expect_false (signals [signum].loop != EV_A)) |
2635 | if (expect_false (signals [signum].loop != EV_A)) |
1402 | return; |
2636 | return; |
1403 | #endif |
2637 | #endif |
1404 | |
2638 | |
1405 | signals [signum].pending = 0; |
2639 | signals [signum].pending = 0; |
|
|
2640 | ECB_MEMORY_FENCE_RELEASE; |
1406 | |
2641 | |
1407 | for (w = signals [signum].head; w; w = w->next) |
2642 | for (w = signals [signum].head; w; w = w->next) |
1408 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2643 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1409 | } |
2644 | } |
1410 | |
2645 | |
… | |
… | |
1489 | |
2724 | |
1490 | #endif |
2725 | #endif |
1491 | |
2726 | |
1492 | /*****************************************************************************/ |
2727 | /*****************************************************************************/ |
1493 | |
2728 | |
|
|
2729 | #if EV_USE_IOCP |
|
|
2730 | # include "ev_iocp.c" |
|
|
2731 | #endif |
1494 | #if EV_USE_PORT |
2732 | #if EV_USE_PORT |
1495 | # include "ev_port.c" |
2733 | # include "ev_port.c" |
1496 | #endif |
2734 | #endif |
1497 | #if EV_USE_KQUEUE |
2735 | #if EV_USE_KQUEUE |
1498 | # include "ev_kqueue.c" |
2736 | # include "ev_kqueue.c" |
1499 | #endif |
2737 | #endif |
1500 | #if EV_USE_EPOLL |
2738 | #if EV_USE_EPOLL |
1501 | # include "ev_epoll.c" |
2739 | # include "ev_epoll.c" |
1502 | #endif |
2740 | #endif |
|
|
2741 | #if EV_USE_LINUXAIO |
|
|
2742 | # include "ev_linuxaio.c" |
|
|
2743 | #endif |
1503 | #if EV_USE_POLL |
2744 | #if EV_USE_POLL |
1504 | # include "ev_poll.c" |
2745 | # include "ev_poll.c" |
1505 | #endif |
2746 | #endif |
1506 | #if EV_USE_SELECT |
2747 | #if EV_USE_SELECT |
1507 | # include "ev_select.c" |
2748 | # include "ev_select.c" |
1508 | #endif |
2749 | #endif |
1509 | |
2750 | |
1510 | int |
2751 | ecb_cold int |
1511 | ev_version_major (void) |
2752 | ev_version_major (void) EV_NOEXCEPT |
1512 | { |
2753 | { |
1513 | return EV_VERSION_MAJOR; |
2754 | return EV_VERSION_MAJOR; |
1514 | } |
2755 | } |
1515 | |
2756 | |
1516 | int |
2757 | ecb_cold int |
1517 | ev_version_minor (void) |
2758 | ev_version_minor (void) EV_NOEXCEPT |
1518 | { |
2759 | { |
1519 | return EV_VERSION_MINOR; |
2760 | return EV_VERSION_MINOR; |
1520 | } |
2761 | } |
1521 | |
2762 | |
1522 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2763 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1523 | int inline_size |
2764 | inline_size ecb_cold int |
1524 | enable_secure (void) |
2765 | enable_secure (void) |
1525 | { |
2766 | { |
1526 | #ifdef _WIN32 |
2767 | #ifdef _WIN32 |
1527 | return 0; |
2768 | return 0; |
1528 | #else |
2769 | #else |
1529 | return getuid () != geteuid () |
2770 | return getuid () != geteuid () |
1530 | || getgid () != getegid (); |
2771 | || getgid () != getegid (); |
1531 | #endif |
2772 | #endif |
1532 | } |
2773 | } |
1533 | |
2774 | |
|
|
2775 | ecb_cold |
1534 | unsigned int |
2776 | unsigned int |
1535 | ev_supported_backends (void) |
2777 | ev_supported_backends (void) EV_NOEXCEPT |
1536 | { |
2778 | { |
1537 | unsigned int flags = 0; |
2779 | unsigned int flags = 0; |
1538 | |
2780 | |
1539 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2781 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
1540 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
2782 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
1541 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
2783 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2784 | if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; |
1542 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
2785 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
1543 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2786 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
1544 | |
2787 | |
1545 | return flags; |
2788 | return flags; |
1546 | } |
2789 | } |
1547 | |
2790 | |
|
|
2791 | ecb_cold |
1548 | unsigned int |
2792 | unsigned int |
1549 | ev_recommended_backends (void) |
2793 | ev_recommended_backends (void) EV_NOEXCEPT |
1550 | { |
2794 | { |
1551 | unsigned int flags = ev_supported_backends (); |
2795 | unsigned int flags = ev_supported_backends (); |
1552 | |
2796 | |
1553 | #ifndef __NetBSD__ |
2797 | #ifndef __NetBSD__ |
1554 | /* kqueue is borked on everything but netbsd apparently */ |
2798 | /* kqueue is borked on everything but netbsd apparently */ |
… | |
… | |
1562 | #endif |
2806 | #endif |
1563 | #ifdef __FreeBSD__ |
2807 | #ifdef __FreeBSD__ |
1564 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
2808 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
1565 | #endif |
2809 | #endif |
1566 | |
2810 | |
|
|
2811 | /* TODO: linuxaio is very experimental */ |
|
|
2812 | #if !EV_RECOMMEND_LINUXAIO |
|
|
2813 | flags &= ~EVBACKEND_LINUXAIO; |
|
|
2814 | #endif |
|
|
2815 | |
1567 | return flags; |
2816 | return flags; |
1568 | } |
2817 | } |
1569 | |
2818 | |
|
|
2819 | ecb_cold |
1570 | unsigned int |
2820 | unsigned int |
1571 | ev_embeddable_backends (void) |
2821 | ev_embeddable_backends (void) EV_NOEXCEPT |
1572 | { |
2822 | { |
1573 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2823 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1574 | |
2824 | |
1575 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2825 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1576 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
2826 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
… | |
… | |
1578 | |
2828 | |
1579 | return flags; |
2829 | return flags; |
1580 | } |
2830 | } |
1581 | |
2831 | |
1582 | unsigned int |
2832 | unsigned int |
1583 | ev_backend (EV_P) |
2833 | ev_backend (EV_P) EV_NOEXCEPT |
1584 | { |
2834 | { |
1585 | return backend; |
2835 | return backend; |
1586 | } |
2836 | } |
1587 | |
2837 | |
1588 | #if EV_FEATURE_API |
2838 | #if EV_FEATURE_API |
1589 | unsigned int |
2839 | unsigned int |
1590 | ev_iteration (EV_P) |
2840 | ev_iteration (EV_P) EV_NOEXCEPT |
1591 | { |
2841 | { |
1592 | return loop_count; |
2842 | return loop_count; |
1593 | } |
2843 | } |
1594 | |
2844 | |
1595 | unsigned int |
2845 | unsigned int |
1596 | ev_depth (EV_P) |
2846 | ev_depth (EV_P) EV_NOEXCEPT |
1597 | { |
2847 | { |
1598 | return loop_depth; |
2848 | return loop_depth; |
1599 | } |
2849 | } |
1600 | |
2850 | |
1601 | void |
2851 | void |
1602 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
2852 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
1603 | { |
2853 | { |
1604 | io_blocktime = interval; |
2854 | io_blocktime = interval; |
1605 | } |
2855 | } |
1606 | |
2856 | |
1607 | void |
2857 | void |
1608 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
2858 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
1609 | { |
2859 | { |
1610 | timeout_blocktime = interval; |
2860 | timeout_blocktime = interval; |
1611 | } |
2861 | } |
1612 | |
2862 | |
1613 | void |
2863 | void |
1614 | ev_set_userdata (EV_P_ void *data) |
2864 | ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT |
1615 | { |
2865 | { |
1616 | userdata = data; |
2866 | userdata = data; |
1617 | } |
2867 | } |
1618 | |
2868 | |
1619 | void * |
2869 | void * |
1620 | ev_userdata (EV_P) |
2870 | ev_userdata (EV_P) EV_NOEXCEPT |
1621 | { |
2871 | { |
1622 | return userdata; |
2872 | return userdata; |
1623 | } |
2873 | } |
1624 | |
2874 | |
|
|
2875 | void |
1625 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
2876 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT |
1626 | { |
2877 | { |
1627 | invoke_cb = invoke_pending_cb; |
2878 | invoke_cb = invoke_pending_cb; |
1628 | } |
2879 | } |
1629 | |
2880 | |
|
|
2881 | void |
1630 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
2882 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT |
1631 | { |
2883 | { |
1632 | release_cb = release; |
2884 | release_cb = release; |
1633 | acquire_cb = acquire; |
2885 | acquire_cb = acquire; |
1634 | } |
2886 | } |
1635 | #endif |
2887 | #endif |
1636 | |
2888 | |
1637 | /* initialise a loop structure, must be zero-initialised */ |
2889 | /* initialise a loop structure, must be zero-initialised */ |
1638 | static void noinline |
2890 | noinline ecb_cold |
|
|
2891 | static void |
1639 | loop_init (EV_P_ unsigned int flags) |
2892 | loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT |
1640 | { |
2893 | { |
1641 | if (!backend) |
2894 | if (!backend) |
1642 | { |
2895 | { |
|
|
2896 | origflags = flags; |
|
|
2897 | |
1643 | #if EV_USE_REALTIME |
2898 | #if EV_USE_REALTIME |
1644 | if (!have_realtime) |
2899 | if (!have_realtime) |
1645 | { |
2900 | { |
1646 | struct timespec ts; |
2901 | struct timespec ts; |
1647 | |
2902 | |
… | |
… | |
1669 | if (!(flags & EVFLAG_NOENV) |
2924 | if (!(flags & EVFLAG_NOENV) |
1670 | && !enable_secure () |
2925 | && !enable_secure () |
1671 | && getenv ("LIBEV_FLAGS")) |
2926 | && getenv ("LIBEV_FLAGS")) |
1672 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2927 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1673 | |
2928 | |
1674 | ev_rt_now = ev_time (); |
2929 | ev_rt_now = ev_time (); |
1675 | mn_now = get_clock (); |
2930 | mn_now = get_clock (); |
1676 | now_floor = mn_now; |
2931 | now_floor = mn_now; |
1677 | rtmn_diff = ev_rt_now - mn_now; |
2932 | rtmn_diff = ev_rt_now - mn_now; |
1678 | #if EV_FEATURE_API |
2933 | #if EV_FEATURE_API |
1679 | invoke_cb = ev_invoke_pending; |
2934 | invoke_cb = ev_invoke_pending; |
1680 | #endif |
2935 | #endif |
1681 | |
2936 | |
1682 | io_blocktime = 0.; |
2937 | io_blocktime = 0.; |
1683 | timeout_blocktime = 0.; |
2938 | timeout_blocktime = 0.; |
1684 | backend = 0; |
2939 | backend = 0; |
1685 | backend_fd = -1; |
2940 | backend_fd = -1; |
1686 | sig_pending = 0; |
2941 | sig_pending = 0; |
1687 | #if EV_ASYNC_ENABLE |
2942 | #if EV_ASYNC_ENABLE |
1688 | async_pending = 0; |
2943 | async_pending = 0; |
1689 | #endif |
2944 | #endif |
|
|
2945 | pipe_write_skipped = 0; |
|
|
2946 | pipe_write_wanted = 0; |
|
|
2947 | evpipe [0] = -1; |
|
|
2948 | evpipe [1] = -1; |
1690 | #if EV_USE_INOTIFY |
2949 | #if EV_USE_INOTIFY |
1691 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2950 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1692 | #endif |
2951 | #endif |
1693 | #if EV_USE_SIGNALFD |
2952 | #if EV_USE_SIGNALFD |
1694 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2953 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1695 | #endif |
2954 | #endif |
1696 | |
2955 | |
1697 | if (!(flags & 0x0000ffffU)) |
2956 | if (!(flags & EVBACKEND_MASK)) |
1698 | flags |= ev_recommended_backends (); |
2957 | flags |= ev_recommended_backends (); |
1699 | |
2958 | |
|
|
2959 | #if EV_USE_IOCP |
|
|
2960 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2961 | #endif |
1700 | #if EV_USE_PORT |
2962 | #if EV_USE_PORT |
1701 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
2963 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1702 | #endif |
2964 | #endif |
1703 | #if EV_USE_KQUEUE |
2965 | #if EV_USE_KQUEUE |
1704 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
2966 | if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags); |
|
|
2967 | #endif |
|
|
2968 | #if EV_USE_LINUXAIO |
|
|
2969 | if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags); |
1705 | #endif |
2970 | #endif |
1706 | #if EV_USE_EPOLL |
2971 | #if EV_USE_EPOLL |
1707 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
2972 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
1708 | #endif |
2973 | #endif |
1709 | #if EV_USE_POLL |
2974 | #if EV_USE_POLL |
1710 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
2975 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
1711 | #endif |
2976 | #endif |
1712 | #if EV_USE_SELECT |
2977 | #if EV_USE_SELECT |
1713 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
2978 | if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags); |
1714 | #endif |
2979 | #endif |
1715 | |
2980 | |
1716 | ev_prepare_init (&pending_w, pendingcb); |
2981 | ev_prepare_init (&pending_w, pendingcb); |
1717 | |
2982 | |
1718 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2983 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
… | |
… | |
1721 | #endif |
2986 | #endif |
1722 | } |
2987 | } |
1723 | } |
2988 | } |
1724 | |
2989 | |
1725 | /* free up a loop structure */ |
2990 | /* free up a loop structure */ |
1726 | static void noinline |
2991 | ecb_cold |
|
|
2992 | void |
1727 | loop_destroy (EV_P) |
2993 | ev_loop_destroy (EV_P) |
1728 | { |
2994 | { |
1729 | int i; |
2995 | int i; |
|
|
2996 | |
|
|
2997 | #if EV_MULTIPLICITY |
|
|
2998 | /* mimic free (0) */ |
|
|
2999 | if (!EV_A) |
|
|
3000 | return; |
|
|
3001 | #endif |
|
|
3002 | |
|
|
3003 | #if EV_CLEANUP_ENABLE |
|
|
3004 | /* queue cleanup watchers (and execute them) */ |
|
|
3005 | if (expect_false (cleanupcnt)) |
|
|
3006 | { |
|
|
3007 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
3008 | EV_INVOKE_PENDING; |
|
|
3009 | } |
|
|
3010 | #endif |
|
|
3011 | |
|
|
3012 | #if EV_CHILD_ENABLE |
|
|
3013 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
3014 | { |
|
|
3015 | ev_ref (EV_A); /* child watcher */ |
|
|
3016 | ev_signal_stop (EV_A_ &childev); |
|
|
3017 | } |
|
|
3018 | #endif |
1730 | |
3019 | |
1731 | if (ev_is_active (&pipe_w)) |
3020 | if (ev_is_active (&pipe_w)) |
1732 | { |
3021 | { |
1733 | /*ev_ref (EV_A);*/ |
3022 | /*ev_ref (EV_A);*/ |
1734 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
3023 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1735 | |
3024 | |
1736 | #if EV_USE_EVENTFD |
|
|
1737 | if (evfd >= 0) |
|
|
1738 | close (evfd); |
|
|
1739 | #endif |
|
|
1740 | |
|
|
1741 | if (evpipe [0] >= 0) |
|
|
1742 | { |
|
|
1743 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3025 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
1744 | EV_WIN32_CLOSE_FD (evpipe [1]); |
3026 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
1745 | } |
|
|
1746 | } |
3027 | } |
1747 | |
3028 | |
1748 | #if EV_USE_SIGNALFD |
3029 | #if EV_USE_SIGNALFD |
1749 | if (ev_is_active (&sigfd_w)) |
3030 | if (ev_is_active (&sigfd_w)) |
1750 | close (sigfd); |
3031 | close (sigfd); |
… | |
… | |
1756 | #endif |
3037 | #endif |
1757 | |
3038 | |
1758 | if (backend_fd >= 0) |
3039 | if (backend_fd >= 0) |
1759 | close (backend_fd); |
3040 | close (backend_fd); |
1760 | |
3041 | |
|
|
3042 | #if EV_USE_IOCP |
|
|
3043 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
3044 | #endif |
1761 | #if EV_USE_PORT |
3045 | #if EV_USE_PORT |
1762 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
3046 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1763 | #endif |
3047 | #endif |
1764 | #if EV_USE_KQUEUE |
3048 | #if EV_USE_KQUEUE |
1765 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
3049 | if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A); |
|
|
3050 | #endif |
|
|
3051 | #if EV_USE_LINUXAIO |
|
|
3052 | if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A); |
1766 | #endif |
3053 | #endif |
1767 | #if EV_USE_EPOLL |
3054 | #if EV_USE_EPOLL |
1768 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
3055 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
1769 | #endif |
3056 | #endif |
1770 | #if EV_USE_POLL |
3057 | #if EV_USE_POLL |
1771 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
3058 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
1772 | #endif |
3059 | #endif |
1773 | #if EV_USE_SELECT |
3060 | #if EV_USE_SELECT |
1774 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
3061 | if (backend == EVBACKEND_SELECT ) select_destroy (EV_A); |
1775 | #endif |
3062 | #endif |
1776 | |
3063 | |
1777 | for (i = NUMPRI; i--; ) |
3064 | for (i = NUMPRI; i--; ) |
1778 | { |
3065 | { |
1779 | array_free (pending, [i]); |
3066 | array_free (pending, [i]); |
… | |
… | |
1792 | array_free (periodic, EMPTY); |
3079 | array_free (periodic, EMPTY); |
1793 | #endif |
3080 | #endif |
1794 | #if EV_FORK_ENABLE |
3081 | #if EV_FORK_ENABLE |
1795 | array_free (fork, EMPTY); |
3082 | array_free (fork, EMPTY); |
1796 | #endif |
3083 | #endif |
|
|
3084 | #if EV_CLEANUP_ENABLE |
|
|
3085 | array_free (cleanup, EMPTY); |
|
|
3086 | #endif |
1797 | array_free (prepare, EMPTY); |
3087 | array_free (prepare, EMPTY); |
1798 | array_free (check, EMPTY); |
3088 | array_free (check, EMPTY); |
1799 | #if EV_ASYNC_ENABLE |
3089 | #if EV_ASYNC_ENABLE |
1800 | array_free (async, EMPTY); |
3090 | array_free (async, EMPTY); |
1801 | #endif |
3091 | #endif |
1802 | |
3092 | |
1803 | backend = 0; |
3093 | backend = 0; |
|
|
3094 | |
|
|
3095 | #if EV_MULTIPLICITY |
|
|
3096 | if (ev_is_default_loop (EV_A)) |
|
|
3097 | #endif |
|
|
3098 | ev_default_loop_ptr = 0; |
|
|
3099 | #if EV_MULTIPLICITY |
|
|
3100 | else |
|
|
3101 | ev_free (EV_A); |
|
|
3102 | #endif |
1804 | } |
3103 | } |
1805 | |
3104 | |
1806 | #if EV_USE_INOTIFY |
3105 | #if EV_USE_INOTIFY |
1807 | inline_size void infy_fork (EV_P); |
3106 | inline_size void infy_fork (EV_P); |
1808 | #endif |
3107 | #endif |
1809 | |
3108 | |
1810 | inline_size void |
3109 | inline_size void |
1811 | loop_fork (EV_P) |
3110 | loop_fork (EV_P) |
1812 | { |
3111 | { |
1813 | #if EV_USE_PORT |
3112 | #if EV_USE_PORT |
1814 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
3113 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1815 | #endif |
3114 | #endif |
1816 | #if EV_USE_KQUEUE |
3115 | #if EV_USE_KQUEUE |
1817 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
3116 | if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A); |
|
|
3117 | #endif |
|
|
3118 | #if EV_USE_LINUXAIO |
|
|
3119 | if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A); |
1818 | #endif |
3120 | #endif |
1819 | #if EV_USE_EPOLL |
3121 | #if EV_USE_EPOLL |
1820 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
3122 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
1821 | #endif |
3123 | #endif |
1822 | #if EV_USE_INOTIFY |
3124 | #if EV_USE_INOTIFY |
1823 | infy_fork (EV_A); |
3125 | infy_fork (EV_A); |
1824 | #endif |
3126 | #endif |
1825 | |
3127 | |
|
|
3128 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1826 | if (ev_is_active (&pipe_w)) |
3129 | if (ev_is_active (&pipe_w) && postfork != 2) |
1827 | { |
3130 | { |
1828 | /* this "locks" the handlers against writing to the pipe */ |
3131 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1829 | /* while we modify the fd vars */ |
|
|
1830 | sig_pending = 1; |
|
|
1831 | #if EV_ASYNC_ENABLE |
|
|
1832 | async_pending = 1; |
|
|
1833 | #endif |
|
|
1834 | |
3132 | |
1835 | ev_ref (EV_A); |
3133 | ev_ref (EV_A); |
1836 | ev_io_stop (EV_A_ &pipe_w); |
3134 | ev_io_stop (EV_A_ &pipe_w); |
1837 | |
3135 | |
1838 | #if EV_USE_EVENTFD |
|
|
1839 | if (evfd >= 0) |
|
|
1840 | close (evfd); |
|
|
1841 | #endif |
|
|
1842 | |
|
|
1843 | if (evpipe [0] >= 0) |
3136 | if (evpipe [0] >= 0) |
1844 | { |
|
|
1845 | EV_WIN32_CLOSE_FD (evpipe [0]); |
3137 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1846 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1847 | } |
|
|
1848 | |
3138 | |
1849 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1850 | evpipe_init (EV_A); |
3139 | evpipe_init (EV_A); |
1851 | /* now iterate over everything, in case we missed something */ |
3140 | /* iterate over everything, in case we missed something before */ |
1852 | pipecb (EV_A_ &pipe_w, EV_READ); |
3141 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
1853 | #endif |
|
|
1854 | } |
3142 | } |
|
|
3143 | #endif |
1855 | |
3144 | |
1856 | postfork = 0; |
3145 | postfork = 0; |
1857 | } |
3146 | } |
1858 | |
3147 | |
1859 | #if EV_MULTIPLICITY |
3148 | #if EV_MULTIPLICITY |
1860 | |
3149 | |
|
|
3150 | ecb_cold |
1861 | struct ev_loop * |
3151 | struct ev_loop * |
1862 | ev_loop_new (unsigned int flags) |
3152 | ev_loop_new (unsigned int flags) EV_NOEXCEPT |
1863 | { |
3153 | { |
1864 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
3154 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1865 | |
3155 | |
1866 | memset (EV_A, 0, sizeof (struct ev_loop)); |
3156 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1867 | loop_init (EV_A_ flags); |
3157 | loop_init (EV_A_ flags); |
1868 | |
3158 | |
1869 | if (ev_backend (EV_A)) |
3159 | if (ev_backend (EV_A)) |
1870 | return EV_A; |
3160 | return EV_A; |
1871 | |
3161 | |
|
|
3162 | ev_free (EV_A); |
1872 | return 0; |
3163 | return 0; |
1873 | } |
3164 | } |
1874 | |
3165 | |
1875 | void |
|
|
1876 | ev_loop_destroy (EV_P) |
|
|
1877 | { |
|
|
1878 | loop_destroy (EV_A); |
|
|
1879 | ev_free (loop); |
|
|
1880 | } |
|
|
1881 | |
|
|
1882 | void |
|
|
1883 | ev_loop_fork (EV_P) |
|
|
1884 | { |
|
|
1885 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1886 | } |
|
|
1887 | #endif /* multiplicity */ |
3166 | #endif /* multiplicity */ |
1888 | |
3167 | |
1889 | #if EV_VERIFY |
3168 | #if EV_VERIFY |
1890 | static void noinline |
3169 | noinline ecb_cold |
|
|
3170 | static void |
1891 | verify_watcher (EV_P_ W w) |
3171 | verify_watcher (EV_P_ W w) |
1892 | { |
3172 | { |
1893 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
3173 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1894 | |
3174 | |
1895 | if (w->pending) |
3175 | if (w->pending) |
1896 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
3176 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1897 | } |
3177 | } |
1898 | |
3178 | |
1899 | static void noinline |
3179 | noinline ecb_cold |
|
|
3180 | static void |
1900 | verify_heap (EV_P_ ANHE *heap, int N) |
3181 | verify_heap (EV_P_ ANHE *heap, int N) |
1901 | { |
3182 | { |
1902 | int i; |
3183 | int i; |
1903 | |
3184 | |
1904 | for (i = HEAP0; i < N + HEAP0; ++i) |
3185 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1909 | |
3190 | |
1910 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
3191 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1911 | } |
3192 | } |
1912 | } |
3193 | } |
1913 | |
3194 | |
1914 | static void noinline |
3195 | noinline ecb_cold |
|
|
3196 | static void |
1915 | array_verify (EV_P_ W *ws, int cnt) |
3197 | array_verify (EV_P_ W *ws, int cnt) |
1916 | { |
3198 | { |
1917 | while (cnt--) |
3199 | while (cnt--) |
1918 | { |
3200 | { |
1919 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
3201 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1921 | } |
3203 | } |
1922 | } |
3204 | } |
1923 | #endif |
3205 | #endif |
1924 | |
3206 | |
1925 | #if EV_FEATURE_API |
3207 | #if EV_FEATURE_API |
1926 | void |
3208 | void ecb_cold |
1927 | ev_verify (EV_P) |
3209 | ev_verify (EV_P) EV_NOEXCEPT |
1928 | { |
3210 | { |
1929 | #if EV_VERIFY |
3211 | #if EV_VERIFY |
1930 | int i; |
3212 | int i; |
1931 | WL w; |
3213 | WL w, w2; |
1932 | |
3214 | |
1933 | assert (activecnt >= -1); |
3215 | assert (activecnt >= -1); |
1934 | |
3216 | |
1935 | assert (fdchangemax >= fdchangecnt); |
3217 | assert (fdchangemax >= fdchangecnt); |
1936 | for (i = 0; i < fdchangecnt; ++i) |
3218 | for (i = 0; i < fdchangecnt; ++i) |
1937 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
3219 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
1938 | |
3220 | |
1939 | assert (anfdmax >= 0); |
3221 | assert (anfdmax >= 0); |
1940 | for (i = 0; i < anfdmax; ++i) |
3222 | for (i = 0; i < anfdmax; ++i) |
|
|
3223 | { |
|
|
3224 | int j = 0; |
|
|
3225 | |
1941 | for (w = anfds [i].head; w; w = w->next) |
3226 | for (w = w2 = anfds [i].head; w; w = w->next) |
1942 | { |
3227 | { |
1943 | verify_watcher (EV_A_ (W)w); |
3228 | verify_watcher (EV_A_ (W)w); |
|
|
3229 | |
|
|
3230 | if (j++ & 1) |
|
|
3231 | { |
|
|
3232 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
3233 | w2 = w2->next; |
|
|
3234 | } |
|
|
3235 | |
1944 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
3236 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
1945 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
3237 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
1946 | } |
3238 | } |
|
|
3239 | } |
1947 | |
3240 | |
1948 | assert (timermax >= timercnt); |
3241 | assert (timermax >= timercnt); |
1949 | verify_heap (EV_A_ timers, timercnt); |
3242 | verify_heap (EV_A_ timers, timercnt); |
1950 | |
3243 | |
1951 | #if EV_PERIODIC_ENABLE |
3244 | #if EV_PERIODIC_ENABLE |
… | |
… | |
1966 | #if EV_FORK_ENABLE |
3259 | #if EV_FORK_ENABLE |
1967 | assert (forkmax >= forkcnt); |
3260 | assert (forkmax >= forkcnt); |
1968 | array_verify (EV_A_ (W *)forks, forkcnt); |
3261 | array_verify (EV_A_ (W *)forks, forkcnt); |
1969 | #endif |
3262 | #endif |
1970 | |
3263 | |
|
|
3264 | #if EV_CLEANUP_ENABLE |
|
|
3265 | assert (cleanupmax >= cleanupcnt); |
|
|
3266 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
3267 | #endif |
|
|
3268 | |
1971 | #if EV_ASYNC_ENABLE |
3269 | #if EV_ASYNC_ENABLE |
1972 | assert (asyncmax >= asynccnt); |
3270 | assert (asyncmax >= asynccnt); |
1973 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
3271 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1974 | #endif |
3272 | #endif |
1975 | |
3273 | |
… | |
… | |
1992 | #endif |
3290 | #endif |
1993 | } |
3291 | } |
1994 | #endif |
3292 | #endif |
1995 | |
3293 | |
1996 | #if EV_MULTIPLICITY |
3294 | #if EV_MULTIPLICITY |
|
|
3295 | ecb_cold |
1997 | struct ev_loop * |
3296 | struct ev_loop * |
1998 | ev_default_loop_init (unsigned int flags) |
|
|
1999 | #else |
3297 | #else |
2000 | int |
3298 | int |
|
|
3299 | #endif |
2001 | ev_default_loop (unsigned int flags) |
3300 | ev_default_loop (unsigned int flags) EV_NOEXCEPT |
2002 | #endif |
|
|
2003 | { |
3301 | { |
2004 | if (!ev_default_loop_ptr) |
3302 | if (!ev_default_loop_ptr) |
2005 | { |
3303 | { |
2006 | #if EV_MULTIPLICITY |
3304 | #if EV_MULTIPLICITY |
2007 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
3305 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
… | |
… | |
2026 | |
3324 | |
2027 | return ev_default_loop_ptr; |
3325 | return ev_default_loop_ptr; |
2028 | } |
3326 | } |
2029 | |
3327 | |
2030 | void |
3328 | void |
2031 | ev_default_destroy (void) |
3329 | ev_loop_fork (EV_P) EV_NOEXCEPT |
2032 | { |
3330 | { |
2033 | #if EV_MULTIPLICITY |
3331 | postfork = 1; |
2034 | EV_P = ev_default_loop_ptr; |
|
|
2035 | #endif |
|
|
2036 | |
|
|
2037 | ev_default_loop_ptr = 0; |
|
|
2038 | |
|
|
2039 | #if EV_CHILD_ENABLE |
|
|
2040 | ev_ref (EV_A); /* child watcher */ |
|
|
2041 | ev_signal_stop (EV_A_ &childev); |
|
|
2042 | #endif |
|
|
2043 | |
|
|
2044 | loop_destroy (EV_A); |
|
|
2045 | } |
|
|
2046 | |
|
|
2047 | void |
|
|
2048 | ev_default_fork (void) |
|
|
2049 | { |
|
|
2050 | #if EV_MULTIPLICITY |
|
|
2051 | EV_P = ev_default_loop_ptr; |
|
|
2052 | #endif |
|
|
2053 | |
|
|
2054 | postfork = 1; /* must be in line with ev_loop_fork */ |
|
|
2055 | } |
3332 | } |
2056 | |
3333 | |
2057 | /*****************************************************************************/ |
3334 | /*****************************************************************************/ |
2058 | |
3335 | |
2059 | void |
3336 | void |
… | |
… | |
2061 | { |
3338 | { |
2062 | EV_CB_INVOKE ((W)w, revents); |
3339 | EV_CB_INVOKE ((W)w, revents); |
2063 | } |
3340 | } |
2064 | |
3341 | |
2065 | unsigned int |
3342 | unsigned int |
2066 | ev_pending_count (EV_P) |
3343 | ev_pending_count (EV_P) EV_NOEXCEPT |
2067 | { |
3344 | { |
2068 | int pri; |
3345 | int pri; |
2069 | unsigned int count = 0; |
3346 | unsigned int count = 0; |
2070 | |
3347 | |
2071 | for (pri = NUMPRI; pri--; ) |
3348 | for (pri = NUMPRI; pri--; ) |
2072 | count += pendingcnt [pri]; |
3349 | count += pendingcnt [pri]; |
2073 | |
3350 | |
2074 | return count; |
3351 | return count; |
2075 | } |
3352 | } |
2076 | |
3353 | |
2077 | void noinline |
3354 | noinline |
|
|
3355 | void |
2078 | ev_invoke_pending (EV_P) |
3356 | ev_invoke_pending (EV_P) |
2079 | { |
3357 | { |
2080 | int pri; |
3358 | pendingpri = NUMPRI; |
2081 | |
3359 | |
2082 | for (pri = NUMPRI; pri--; ) |
3360 | do |
|
|
3361 | { |
|
|
3362 | --pendingpri; |
|
|
3363 | |
|
|
3364 | /* pendingpri possibly gets modified in the inner loop */ |
2083 | while (pendingcnt [pri]) |
3365 | while (pendingcnt [pendingpri]) |
2084 | { |
3366 | { |
2085 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
3367 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
2086 | |
3368 | |
2087 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
2088 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2089 | |
|
|
2090 | p->w->pending = 0; |
3369 | p->w->pending = 0; |
2091 | EV_CB_INVOKE (p->w, p->events); |
3370 | EV_CB_INVOKE (p->w, p->events); |
2092 | EV_FREQUENT_CHECK; |
3371 | EV_FREQUENT_CHECK; |
2093 | } |
3372 | } |
|
|
3373 | } |
|
|
3374 | while (pendingpri); |
2094 | } |
3375 | } |
2095 | |
3376 | |
2096 | #if EV_IDLE_ENABLE |
3377 | #if EV_IDLE_ENABLE |
2097 | /* make idle watchers pending. this handles the "call-idle */ |
3378 | /* make idle watchers pending. this handles the "call-idle */ |
2098 | /* only when higher priorities are idle" logic */ |
3379 | /* only when higher priorities are idle" logic */ |
… | |
… | |
2155 | feed_reverse_done (EV_A_ EV_TIMER); |
3436 | feed_reverse_done (EV_A_ EV_TIMER); |
2156 | } |
3437 | } |
2157 | } |
3438 | } |
2158 | |
3439 | |
2159 | #if EV_PERIODIC_ENABLE |
3440 | #if EV_PERIODIC_ENABLE |
|
|
3441 | |
|
|
3442 | noinline |
|
|
3443 | static void |
|
|
3444 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
3445 | { |
|
|
3446 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3447 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3448 | |
|
|
3449 | /* the above almost always errs on the low side */ |
|
|
3450 | while (at <= ev_rt_now) |
|
|
3451 | { |
|
|
3452 | ev_tstamp nat = at + w->interval; |
|
|
3453 | |
|
|
3454 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3455 | if (expect_false (nat == at)) |
|
|
3456 | { |
|
|
3457 | at = ev_rt_now; |
|
|
3458 | break; |
|
|
3459 | } |
|
|
3460 | |
|
|
3461 | at = nat; |
|
|
3462 | } |
|
|
3463 | |
|
|
3464 | ev_at (w) = at; |
|
|
3465 | } |
|
|
3466 | |
2160 | /* make periodics pending */ |
3467 | /* make periodics pending */ |
2161 | inline_size void |
3468 | inline_size void |
2162 | periodics_reify (EV_P) |
3469 | periodics_reify (EV_P) |
2163 | { |
3470 | { |
2164 | EV_FREQUENT_CHECK; |
3471 | EV_FREQUENT_CHECK; |
2165 | |
3472 | |
2166 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
3473 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
2167 | { |
3474 | { |
2168 | int feed_count = 0; |
|
|
2169 | |
|
|
2170 | do |
3475 | do |
2171 | { |
3476 | { |
2172 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
3477 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
2173 | |
3478 | |
2174 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
3479 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
… | |
… | |
2183 | ANHE_at_cache (periodics [HEAP0]); |
3488 | ANHE_at_cache (periodics [HEAP0]); |
2184 | downheap (periodics, periodiccnt, HEAP0); |
3489 | downheap (periodics, periodiccnt, HEAP0); |
2185 | } |
3490 | } |
2186 | else if (w->interval) |
3491 | else if (w->interval) |
2187 | { |
3492 | { |
2188 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
3493 | periodic_recalc (EV_A_ w); |
2189 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2190 | /* this might happen because of floating point inexactness */ |
|
|
2191 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2192 | { |
|
|
2193 | ev_at (w) += w->interval; |
|
|
2194 | |
|
|
2195 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2196 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2197 | /* has effectively asked to get triggered more often than possible */ |
|
|
2198 | if (ev_at (w) < ev_rt_now) |
|
|
2199 | ev_at (w) = ev_rt_now; |
|
|
2200 | } |
|
|
2201 | |
|
|
2202 | ANHE_at_cache (periodics [HEAP0]); |
3494 | ANHE_at_cache (periodics [HEAP0]); |
2203 | downheap (periodics, periodiccnt, HEAP0); |
3495 | downheap (periodics, periodiccnt, HEAP0); |
2204 | } |
3496 | } |
2205 | else |
3497 | else |
2206 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
3498 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2214 | } |
3506 | } |
2215 | } |
3507 | } |
2216 | |
3508 | |
2217 | /* simply recalculate all periodics */ |
3509 | /* simply recalculate all periodics */ |
2218 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
3510 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2219 | static void noinline |
3511 | noinline ecb_cold |
|
|
3512 | static void |
2220 | periodics_reschedule (EV_P) |
3513 | periodics_reschedule (EV_P) |
2221 | { |
3514 | { |
2222 | int i; |
3515 | int i; |
2223 | |
3516 | |
2224 | /* adjust periodics after time jump */ |
3517 | /* adjust periodics after time jump */ |
… | |
… | |
2227 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
3520 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2228 | |
3521 | |
2229 | if (w->reschedule_cb) |
3522 | if (w->reschedule_cb) |
2230 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
3523 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2231 | else if (w->interval) |
3524 | else if (w->interval) |
2232 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
3525 | periodic_recalc (EV_A_ w); |
2233 | |
3526 | |
2234 | ANHE_at_cache (periodics [i]); |
3527 | ANHE_at_cache (periodics [i]); |
2235 | } |
3528 | } |
2236 | |
3529 | |
2237 | reheap (periodics, periodiccnt); |
3530 | reheap (periodics, periodiccnt); |
2238 | } |
3531 | } |
2239 | #endif |
3532 | #endif |
2240 | |
3533 | |
2241 | /* adjust all timers by a given offset */ |
3534 | /* adjust all timers by a given offset */ |
2242 | static void noinline |
3535 | noinline ecb_cold |
|
|
3536 | static void |
2243 | timers_reschedule (EV_P_ ev_tstamp adjust) |
3537 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2244 | { |
3538 | { |
2245 | int i; |
3539 | int i; |
2246 | |
3540 | |
2247 | for (i = 0; i < timercnt; ++i) |
3541 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2284 | * doesn't hurt either as we only do this on time-jumps or |
3578 | * doesn't hurt either as we only do this on time-jumps or |
2285 | * in the unlikely event of having been preempted here. |
3579 | * in the unlikely event of having been preempted here. |
2286 | */ |
3580 | */ |
2287 | for (i = 4; --i; ) |
3581 | for (i = 4; --i; ) |
2288 | { |
3582 | { |
|
|
3583 | ev_tstamp diff; |
2289 | rtmn_diff = ev_rt_now - mn_now; |
3584 | rtmn_diff = ev_rt_now - mn_now; |
2290 | |
3585 | |
|
|
3586 | diff = odiff - rtmn_diff; |
|
|
3587 | |
2291 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
3588 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2292 | return; /* all is well */ |
3589 | return; /* all is well */ |
2293 | |
3590 | |
2294 | ev_rt_now = ev_time (); |
3591 | ev_rt_now = ev_time (); |
2295 | mn_now = get_clock (); |
3592 | mn_now = get_clock (); |
2296 | now_floor = mn_now; |
3593 | now_floor = mn_now; |
… | |
… | |
2318 | |
3615 | |
2319 | mn_now = ev_rt_now; |
3616 | mn_now = ev_rt_now; |
2320 | } |
3617 | } |
2321 | } |
3618 | } |
2322 | |
3619 | |
2323 | void |
3620 | int |
2324 | ev_run (EV_P_ int flags) |
3621 | ev_run (EV_P_ int flags) |
2325 | { |
3622 | { |
2326 | #if EV_FEATURE_API |
3623 | #if EV_FEATURE_API |
2327 | ++loop_depth; |
3624 | ++loop_depth; |
2328 | #endif |
3625 | #endif |
… | |
… | |
2386 | ev_tstamp prev_mn_now = mn_now; |
3683 | ev_tstamp prev_mn_now = mn_now; |
2387 | |
3684 | |
2388 | /* update time to cancel out callback processing overhead */ |
3685 | /* update time to cancel out callback processing overhead */ |
2389 | time_update (EV_A_ 1e100); |
3686 | time_update (EV_A_ 1e100); |
2390 | |
3687 | |
|
|
3688 | /* from now on, we want a pipe-wake-up */ |
|
|
3689 | pipe_write_wanted = 1; |
|
|
3690 | |
|
|
3691 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3692 | |
2391 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
3693 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2392 | { |
3694 | { |
2393 | waittime = MAX_BLOCKTIME; |
3695 | waittime = MAX_BLOCKTIME; |
2394 | |
3696 | |
2395 | if (timercnt) |
3697 | if (timercnt) |
2396 | { |
3698 | { |
2397 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
3699 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2398 | if (waittime > to) waittime = to; |
3700 | if (waittime > to) waittime = to; |
2399 | } |
3701 | } |
2400 | |
3702 | |
2401 | #if EV_PERIODIC_ENABLE |
3703 | #if EV_PERIODIC_ENABLE |
2402 | if (periodiccnt) |
3704 | if (periodiccnt) |
2403 | { |
3705 | { |
2404 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
3706 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2405 | if (waittime > to) waittime = to; |
3707 | if (waittime > to) waittime = to; |
2406 | } |
3708 | } |
2407 | #endif |
3709 | #endif |
2408 | |
3710 | |
2409 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3711 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2410 | if (expect_false (waittime < timeout_blocktime)) |
3712 | if (expect_false (waittime < timeout_blocktime)) |
2411 | waittime = timeout_blocktime; |
3713 | waittime = timeout_blocktime; |
|
|
3714 | |
|
|
3715 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3716 | /* to pass a minimum nonzero value to the backend */ |
|
|
3717 | if (expect_false (waittime < backend_mintime)) |
|
|
3718 | waittime = backend_mintime; |
2412 | |
3719 | |
2413 | /* extra check because io_blocktime is commonly 0 */ |
3720 | /* extra check because io_blocktime is commonly 0 */ |
2414 | if (expect_false (io_blocktime)) |
3721 | if (expect_false (io_blocktime)) |
2415 | { |
3722 | { |
2416 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3723 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2417 | |
3724 | |
2418 | if (sleeptime > waittime - backend_fudge) |
3725 | if (sleeptime > waittime - backend_mintime) |
2419 | sleeptime = waittime - backend_fudge; |
3726 | sleeptime = waittime - backend_mintime; |
2420 | |
3727 | |
2421 | if (expect_true (sleeptime > 0.)) |
3728 | if (expect_true (sleeptime > 0.)) |
2422 | { |
3729 | { |
2423 | ev_sleep (sleeptime); |
3730 | ev_sleep (sleeptime); |
2424 | waittime -= sleeptime; |
3731 | waittime -= sleeptime; |
… | |
… | |
2431 | #endif |
3738 | #endif |
2432 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
3739 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2433 | backend_poll (EV_A_ waittime); |
3740 | backend_poll (EV_A_ waittime); |
2434 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3741 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
2435 | |
3742 | |
|
|
3743 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3744 | |
|
|
3745 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3746 | if (pipe_write_skipped) |
|
|
3747 | { |
|
|
3748 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3749 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3750 | } |
|
|
3751 | |
|
|
3752 | |
2436 | /* update ev_rt_now, do magic */ |
3753 | /* update ev_rt_now, do magic */ |
2437 | time_update (EV_A_ waittime + sleeptime); |
3754 | time_update (EV_A_ waittime + sleeptime); |
2438 | } |
3755 | } |
2439 | |
3756 | |
2440 | /* queue pending timers and reschedule them */ |
3757 | /* queue pending timers and reschedule them */ |
… | |
… | |
2466 | loop_done = EVBREAK_CANCEL; |
3783 | loop_done = EVBREAK_CANCEL; |
2467 | |
3784 | |
2468 | #if EV_FEATURE_API |
3785 | #if EV_FEATURE_API |
2469 | --loop_depth; |
3786 | --loop_depth; |
2470 | #endif |
3787 | #endif |
2471 | } |
|
|
2472 | |
3788 | |
|
|
3789 | return activecnt; |
|
|
3790 | } |
|
|
3791 | |
2473 | void |
3792 | void |
2474 | ev_break (EV_P_ int how) |
3793 | ev_break (EV_P_ int how) EV_NOEXCEPT |
2475 | { |
3794 | { |
2476 | loop_done = how; |
3795 | loop_done = how; |
2477 | } |
3796 | } |
2478 | |
3797 | |
2479 | void |
3798 | void |
2480 | ev_ref (EV_P) |
3799 | ev_ref (EV_P) EV_NOEXCEPT |
2481 | { |
3800 | { |
2482 | ++activecnt; |
3801 | ++activecnt; |
2483 | } |
3802 | } |
2484 | |
3803 | |
2485 | void |
3804 | void |
2486 | ev_unref (EV_P) |
3805 | ev_unref (EV_P) EV_NOEXCEPT |
2487 | { |
3806 | { |
2488 | --activecnt; |
3807 | --activecnt; |
2489 | } |
3808 | } |
2490 | |
3809 | |
2491 | void |
3810 | void |
2492 | ev_now_update (EV_P) |
3811 | ev_now_update (EV_P) EV_NOEXCEPT |
2493 | { |
3812 | { |
2494 | time_update (EV_A_ 1e100); |
3813 | time_update (EV_A_ 1e100); |
2495 | } |
3814 | } |
2496 | |
3815 | |
2497 | void |
3816 | void |
2498 | ev_suspend (EV_P) |
3817 | ev_suspend (EV_P) EV_NOEXCEPT |
2499 | { |
3818 | { |
2500 | ev_now_update (EV_A); |
3819 | ev_now_update (EV_A); |
2501 | } |
3820 | } |
2502 | |
3821 | |
2503 | void |
3822 | void |
2504 | ev_resume (EV_P) |
3823 | ev_resume (EV_P) EV_NOEXCEPT |
2505 | { |
3824 | { |
2506 | ev_tstamp mn_prev = mn_now; |
3825 | ev_tstamp mn_prev = mn_now; |
2507 | |
3826 | |
2508 | ev_now_update (EV_A); |
3827 | ev_now_update (EV_A); |
2509 | timers_reschedule (EV_A_ mn_now - mn_prev); |
3828 | timers_reschedule (EV_A_ mn_now - mn_prev); |
… | |
… | |
2548 | w->pending = 0; |
3867 | w->pending = 0; |
2549 | } |
3868 | } |
2550 | } |
3869 | } |
2551 | |
3870 | |
2552 | int |
3871 | int |
2553 | ev_clear_pending (EV_P_ void *w) |
3872 | ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT |
2554 | { |
3873 | { |
2555 | W w_ = (W)w; |
3874 | W w_ = (W)w; |
2556 | int pending = w_->pending; |
3875 | int pending = w_->pending; |
2557 | |
3876 | |
2558 | if (expect_true (pending)) |
3877 | if (expect_true (pending)) |
… | |
… | |
2590 | w->active = 0; |
3909 | w->active = 0; |
2591 | } |
3910 | } |
2592 | |
3911 | |
2593 | /*****************************************************************************/ |
3912 | /*****************************************************************************/ |
2594 | |
3913 | |
2595 | void noinline |
3914 | noinline |
|
|
3915 | void |
2596 | ev_io_start (EV_P_ ev_io *w) |
3916 | ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT |
2597 | { |
3917 | { |
2598 | int fd = w->fd; |
3918 | int fd = w->fd; |
2599 | |
3919 | |
2600 | if (expect_false (ev_is_active (w))) |
3920 | if (expect_false (ev_is_active (w))) |
2601 | return; |
3921 | return; |
… | |
… | |
2604 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
3924 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2605 | |
3925 | |
2606 | EV_FREQUENT_CHECK; |
3926 | EV_FREQUENT_CHECK; |
2607 | |
3927 | |
2608 | ev_start (EV_A_ (W)w, 1); |
3928 | ev_start (EV_A_ (W)w, 1); |
2609 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
3929 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill); |
2610 | wlist_add (&anfds[fd].head, (WL)w); |
3930 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
3931 | |
|
|
3932 | /* common bug, apparently */ |
|
|
3933 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
2611 | |
3934 | |
2612 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
3935 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
2613 | w->events &= ~EV__IOFDSET; |
3936 | w->events &= ~EV__IOFDSET; |
2614 | |
3937 | |
2615 | EV_FREQUENT_CHECK; |
3938 | EV_FREQUENT_CHECK; |
2616 | } |
3939 | } |
2617 | |
3940 | |
2618 | void noinline |
3941 | noinline |
|
|
3942 | void |
2619 | ev_io_stop (EV_P_ ev_io *w) |
3943 | ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT |
2620 | { |
3944 | { |
2621 | clear_pending (EV_A_ (W)w); |
3945 | clear_pending (EV_A_ (W)w); |
2622 | if (expect_false (!ev_is_active (w))) |
3946 | if (expect_false (!ev_is_active (w))) |
2623 | return; |
3947 | return; |
2624 | |
3948 | |
… | |
… | |
2632 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
3956 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
2633 | |
3957 | |
2634 | EV_FREQUENT_CHECK; |
3958 | EV_FREQUENT_CHECK; |
2635 | } |
3959 | } |
2636 | |
3960 | |
2637 | void noinline |
3961 | noinline |
|
|
3962 | void |
2638 | ev_timer_start (EV_P_ ev_timer *w) |
3963 | ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT |
2639 | { |
3964 | { |
2640 | if (expect_false (ev_is_active (w))) |
3965 | if (expect_false (ev_is_active (w))) |
2641 | return; |
3966 | return; |
2642 | |
3967 | |
2643 | ev_at (w) += mn_now; |
3968 | ev_at (w) += mn_now; |
… | |
… | |
2646 | |
3971 | |
2647 | EV_FREQUENT_CHECK; |
3972 | EV_FREQUENT_CHECK; |
2648 | |
3973 | |
2649 | ++timercnt; |
3974 | ++timercnt; |
2650 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
3975 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
2651 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
3976 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit); |
2652 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
3977 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
2653 | ANHE_at_cache (timers [ev_active (w)]); |
3978 | ANHE_at_cache (timers [ev_active (w)]); |
2654 | upheap (timers, ev_active (w)); |
3979 | upheap (timers, ev_active (w)); |
2655 | |
3980 | |
2656 | EV_FREQUENT_CHECK; |
3981 | EV_FREQUENT_CHECK; |
2657 | |
3982 | |
2658 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
3983 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
2659 | } |
3984 | } |
2660 | |
3985 | |
2661 | void noinline |
3986 | noinline |
|
|
3987 | void |
2662 | ev_timer_stop (EV_P_ ev_timer *w) |
3988 | ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT |
2663 | { |
3989 | { |
2664 | clear_pending (EV_A_ (W)w); |
3990 | clear_pending (EV_A_ (W)w); |
2665 | if (expect_false (!ev_is_active (w))) |
3991 | if (expect_false (!ev_is_active (w))) |
2666 | return; |
3992 | return; |
2667 | |
3993 | |
… | |
… | |
2686 | ev_stop (EV_A_ (W)w); |
4012 | ev_stop (EV_A_ (W)w); |
2687 | |
4013 | |
2688 | EV_FREQUENT_CHECK; |
4014 | EV_FREQUENT_CHECK; |
2689 | } |
4015 | } |
2690 | |
4016 | |
2691 | void noinline |
4017 | noinline |
|
|
4018 | void |
2692 | ev_timer_again (EV_P_ ev_timer *w) |
4019 | ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT |
2693 | { |
4020 | { |
2694 | EV_FREQUENT_CHECK; |
4021 | EV_FREQUENT_CHECK; |
|
|
4022 | |
|
|
4023 | clear_pending (EV_A_ (W)w); |
2695 | |
4024 | |
2696 | if (ev_is_active (w)) |
4025 | if (ev_is_active (w)) |
2697 | { |
4026 | { |
2698 | if (w->repeat) |
4027 | if (w->repeat) |
2699 | { |
4028 | { |
… | |
… | |
2712 | |
4041 | |
2713 | EV_FREQUENT_CHECK; |
4042 | EV_FREQUENT_CHECK; |
2714 | } |
4043 | } |
2715 | |
4044 | |
2716 | ev_tstamp |
4045 | ev_tstamp |
2717 | ev_timer_remaining (EV_P_ ev_timer *w) |
4046 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
2718 | { |
4047 | { |
2719 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
4048 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
2720 | } |
4049 | } |
2721 | |
4050 | |
2722 | #if EV_PERIODIC_ENABLE |
4051 | #if EV_PERIODIC_ENABLE |
2723 | void noinline |
4052 | noinline |
|
|
4053 | void |
2724 | ev_periodic_start (EV_P_ ev_periodic *w) |
4054 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
2725 | { |
4055 | { |
2726 | if (expect_false (ev_is_active (w))) |
4056 | if (expect_false (ev_is_active (w))) |
2727 | return; |
4057 | return; |
2728 | |
4058 | |
2729 | if (w->reschedule_cb) |
4059 | if (w->reschedule_cb) |
2730 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4060 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2731 | else if (w->interval) |
4061 | else if (w->interval) |
2732 | { |
4062 | { |
2733 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
4063 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2734 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
4064 | periodic_recalc (EV_A_ w); |
2735 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2736 | } |
4065 | } |
2737 | else |
4066 | else |
2738 | ev_at (w) = w->offset; |
4067 | ev_at (w) = w->offset; |
2739 | |
4068 | |
2740 | EV_FREQUENT_CHECK; |
4069 | EV_FREQUENT_CHECK; |
2741 | |
4070 | |
2742 | ++periodiccnt; |
4071 | ++periodiccnt; |
2743 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
4072 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
2744 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
4073 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit); |
2745 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
4074 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
2746 | ANHE_at_cache (periodics [ev_active (w)]); |
4075 | ANHE_at_cache (periodics [ev_active (w)]); |
2747 | upheap (periodics, ev_active (w)); |
4076 | upheap (periodics, ev_active (w)); |
2748 | |
4077 | |
2749 | EV_FREQUENT_CHECK; |
4078 | EV_FREQUENT_CHECK; |
2750 | |
4079 | |
2751 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
4080 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
2752 | } |
4081 | } |
2753 | |
4082 | |
2754 | void noinline |
4083 | noinline |
|
|
4084 | void |
2755 | ev_periodic_stop (EV_P_ ev_periodic *w) |
4085 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT |
2756 | { |
4086 | { |
2757 | clear_pending (EV_A_ (W)w); |
4087 | clear_pending (EV_A_ (W)w); |
2758 | if (expect_false (!ev_is_active (w))) |
4088 | if (expect_false (!ev_is_active (w))) |
2759 | return; |
4089 | return; |
2760 | |
4090 | |
… | |
… | |
2777 | ev_stop (EV_A_ (W)w); |
4107 | ev_stop (EV_A_ (W)w); |
2778 | |
4108 | |
2779 | EV_FREQUENT_CHECK; |
4109 | EV_FREQUENT_CHECK; |
2780 | } |
4110 | } |
2781 | |
4111 | |
2782 | void noinline |
4112 | noinline |
|
|
4113 | void |
2783 | ev_periodic_again (EV_P_ ev_periodic *w) |
4114 | ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT |
2784 | { |
4115 | { |
2785 | /* TODO: use adjustheap and recalculation */ |
4116 | /* TODO: use adjustheap and recalculation */ |
2786 | ev_periodic_stop (EV_A_ w); |
4117 | ev_periodic_stop (EV_A_ w); |
2787 | ev_periodic_start (EV_A_ w); |
4118 | ev_periodic_start (EV_A_ w); |
2788 | } |
4119 | } |
… | |
… | |
2792 | # define SA_RESTART 0 |
4123 | # define SA_RESTART 0 |
2793 | #endif |
4124 | #endif |
2794 | |
4125 | |
2795 | #if EV_SIGNAL_ENABLE |
4126 | #if EV_SIGNAL_ENABLE |
2796 | |
4127 | |
2797 | void noinline |
4128 | noinline |
|
|
4129 | void |
2798 | ev_signal_start (EV_P_ ev_signal *w) |
4130 | ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT |
2799 | { |
4131 | { |
2800 | if (expect_false (ev_is_active (w))) |
4132 | if (expect_false (ev_is_active (w))) |
2801 | return; |
4133 | return; |
2802 | |
4134 | |
2803 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
4135 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
… | |
… | |
2805 | #if EV_MULTIPLICITY |
4137 | #if EV_MULTIPLICITY |
2806 | assert (("libev: a signal must not be attached to two different loops", |
4138 | assert (("libev: a signal must not be attached to two different loops", |
2807 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
4139 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
2808 | |
4140 | |
2809 | signals [w->signum - 1].loop = EV_A; |
4141 | signals [w->signum - 1].loop = EV_A; |
|
|
4142 | ECB_MEMORY_FENCE_RELEASE; |
2810 | #endif |
4143 | #endif |
2811 | |
4144 | |
2812 | EV_FREQUENT_CHECK; |
4145 | EV_FREQUENT_CHECK; |
2813 | |
4146 | |
2814 | #if EV_USE_SIGNALFD |
4147 | #if EV_USE_SIGNALFD |
… | |
… | |
2861 | sa.sa_handler = ev_sighandler; |
4194 | sa.sa_handler = ev_sighandler; |
2862 | sigfillset (&sa.sa_mask); |
4195 | sigfillset (&sa.sa_mask); |
2863 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
4196 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2864 | sigaction (w->signum, &sa, 0); |
4197 | sigaction (w->signum, &sa, 0); |
2865 | |
4198 | |
|
|
4199 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
4200 | { |
2866 | sigemptyset (&sa.sa_mask); |
4201 | sigemptyset (&sa.sa_mask); |
2867 | sigaddset (&sa.sa_mask, w->signum); |
4202 | sigaddset (&sa.sa_mask, w->signum); |
2868 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
4203 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
4204 | } |
2869 | #endif |
4205 | #endif |
2870 | } |
4206 | } |
2871 | |
4207 | |
2872 | EV_FREQUENT_CHECK; |
4208 | EV_FREQUENT_CHECK; |
2873 | } |
4209 | } |
2874 | |
4210 | |
2875 | void noinline |
4211 | noinline |
|
|
4212 | void |
2876 | ev_signal_stop (EV_P_ ev_signal *w) |
4213 | ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT |
2877 | { |
4214 | { |
2878 | clear_pending (EV_A_ (W)w); |
4215 | clear_pending (EV_A_ (W)w); |
2879 | if (expect_false (!ev_is_active (w))) |
4216 | if (expect_false (!ev_is_active (w))) |
2880 | return; |
4217 | return; |
2881 | |
4218 | |
… | |
… | |
2912 | #endif |
4249 | #endif |
2913 | |
4250 | |
2914 | #if EV_CHILD_ENABLE |
4251 | #if EV_CHILD_ENABLE |
2915 | |
4252 | |
2916 | void |
4253 | void |
2917 | ev_child_start (EV_P_ ev_child *w) |
4254 | ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT |
2918 | { |
4255 | { |
2919 | #if EV_MULTIPLICITY |
4256 | #if EV_MULTIPLICITY |
2920 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
4257 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2921 | #endif |
4258 | #endif |
2922 | if (expect_false (ev_is_active (w))) |
4259 | if (expect_false (ev_is_active (w))) |
… | |
… | |
2929 | |
4266 | |
2930 | EV_FREQUENT_CHECK; |
4267 | EV_FREQUENT_CHECK; |
2931 | } |
4268 | } |
2932 | |
4269 | |
2933 | void |
4270 | void |
2934 | ev_child_stop (EV_P_ ev_child *w) |
4271 | ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT |
2935 | { |
4272 | { |
2936 | clear_pending (EV_A_ (W)w); |
4273 | clear_pending (EV_A_ (W)w); |
2937 | if (expect_false (!ev_is_active (w))) |
4274 | if (expect_false (!ev_is_active (w))) |
2938 | return; |
4275 | return; |
2939 | |
4276 | |
… | |
… | |
2956 | |
4293 | |
2957 | #define DEF_STAT_INTERVAL 5.0074891 |
4294 | #define DEF_STAT_INTERVAL 5.0074891 |
2958 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
4295 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
2959 | #define MIN_STAT_INTERVAL 0.1074891 |
4296 | #define MIN_STAT_INTERVAL 0.1074891 |
2960 | |
4297 | |
2961 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
4298 | noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2962 | |
4299 | |
2963 | #if EV_USE_INOTIFY |
4300 | #if EV_USE_INOTIFY |
2964 | |
4301 | |
2965 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
4302 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
2966 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
4303 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
2967 | |
4304 | |
2968 | static void noinline |
4305 | noinline |
|
|
4306 | static void |
2969 | infy_add (EV_P_ ev_stat *w) |
4307 | infy_add (EV_P_ ev_stat *w) |
2970 | { |
4308 | { |
2971 | 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); |
4309 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4310 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4311 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4312 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
2972 | |
4313 | |
2973 | if (w->wd >= 0) |
4314 | if (w->wd >= 0) |
2974 | { |
4315 | { |
2975 | struct statfs sfs; |
4316 | struct statfs sfs; |
2976 | |
4317 | |
… | |
… | |
2980 | |
4321 | |
2981 | if (!fs_2625) |
4322 | if (!fs_2625) |
2982 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
4323 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2983 | else if (!statfs (w->path, &sfs) |
4324 | else if (!statfs (w->path, &sfs) |
2984 | && (sfs.f_type == 0x1373 /* devfs */ |
4325 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4326 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4327 | || sfs.f_type == 0x4d44 /* msdos */ |
2985 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
4328 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4329 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4330 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4331 | || sfs.f_type == 0x5346544e /* ntfs */ |
2986 | || sfs.f_type == 0x3153464a /* jfs */ |
4332 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4333 | || sfs.f_type == 0x9123683e /* btrfs */ |
2987 | || sfs.f_type == 0x52654973 /* reiser3 */ |
4334 | || sfs.f_type == 0x52654973 /* reiser3 */ |
2988 | || sfs.f_type == 0x01021994 /* tempfs */ |
4335 | || sfs.f_type == 0x01021994 /* tmpfs */ |
2989 | || sfs.f_type == 0x58465342 /* xfs */)) |
4336 | || sfs.f_type == 0x58465342 /* xfs */)) |
2990 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
4337 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
2991 | else |
4338 | else |
2992 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
4339 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2993 | } |
4340 | } |
… | |
… | |
3014 | if (!pend || pend == path) |
4361 | if (!pend || pend == path) |
3015 | break; |
4362 | break; |
3016 | |
4363 | |
3017 | *pend = 0; |
4364 | *pend = 0; |
3018 | w->wd = inotify_add_watch (fs_fd, path, mask); |
4365 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3019 | } |
4366 | } |
3020 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
4367 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3021 | } |
4368 | } |
3022 | } |
4369 | } |
3023 | |
4370 | |
3024 | if (w->wd >= 0) |
4371 | if (w->wd >= 0) |
… | |
… | |
3028 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
4375 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
3029 | ev_timer_again (EV_A_ &w->timer); |
4376 | ev_timer_again (EV_A_ &w->timer); |
3030 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
4377 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
3031 | } |
4378 | } |
3032 | |
4379 | |
3033 | static void noinline |
4380 | noinline |
|
|
4381 | static void |
3034 | infy_del (EV_P_ ev_stat *w) |
4382 | infy_del (EV_P_ ev_stat *w) |
3035 | { |
4383 | { |
3036 | int slot; |
4384 | int slot; |
3037 | int wd = w->wd; |
4385 | int wd = w->wd; |
3038 | |
4386 | |
… | |
… | |
3045 | |
4393 | |
3046 | /* remove this watcher, if others are watching it, they will rearm */ |
4394 | /* remove this watcher, if others are watching it, they will rearm */ |
3047 | inotify_rm_watch (fs_fd, wd); |
4395 | inotify_rm_watch (fs_fd, wd); |
3048 | } |
4396 | } |
3049 | |
4397 | |
3050 | static void noinline |
4398 | noinline |
|
|
4399 | static void |
3051 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
4400 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
3052 | { |
4401 | { |
3053 | if (slot < 0) |
4402 | if (slot < 0) |
3054 | /* overflow, need to check for all hash slots */ |
4403 | /* overflow, need to check for all hash slots */ |
3055 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
4404 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
… | |
… | |
3091 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
4440 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3092 | ofs += sizeof (struct inotify_event) + ev->len; |
4441 | ofs += sizeof (struct inotify_event) + ev->len; |
3093 | } |
4442 | } |
3094 | } |
4443 | } |
3095 | |
4444 | |
3096 | inline_size void |
4445 | inline_size ecb_cold |
|
|
4446 | void |
3097 | ev_check_2625 (EV_P) |
4447 | ev_check_2625 (EV_P) |
3098 | { |
4448 | { |
3099 | /* kernels < 2.6.25 are borked |
4449 | /* kernels < 2.6.25 are borked |
3100 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
4450 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3101 | */ |
4451 | */ |
… | |
… | |
3106 | } |
4456 | } |
3107 | |
4457 | |
3108 | inline_size int |
4458 | inline_size int |
3109 | infy_newfd (void) |
4459 | infy_newfd (void) |
3110 | { |
4460 | { |
3111 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
4461 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
3112 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
4462 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
3113 | if (fd >= 0) |
4463 | if (fd >= 0) |
3114 | return fd; |
4464 | return fd; |
3115 | #endif |
4465 | #endif |
3116 | return inotify_init (); |
4466 | return inotify_init (); |
… | |
… | |
3191 | #else |
4541 | #else |
3192 | # define EV_LSTAT(p,b) lstat (p, b) |
4542 | # define EV_LSTAT(p,b) lstat (p, b) |
3193 | #endif |
4543 | #endif |
3194 | |
4544 | |
3195 | void |
4545 | void |
3196 | ev_stat_stat (EV_P_ ev_stat *w) |
4546 | ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT |
3197 | { |
4547 | { |
3198 | if (lstat (w->path, &w->attr) < 0) |
4548 | if (lstat (w->path, &w->attr) < 0) |
3199 | w->attr.st_nlink = 0; |
4549 | w->attr.st_nlink = 0; |
3200 | else if (!w->attr.st_nlink) |
4550 | else if (!w->attr.st_nlink) |
3201 | w->attr.st_nlink = 1; |
4551 | w->attr.st_nlink = 1; |
3202 | } |
4552 | } |
3203 | |
4553 | |
3204 | static void noinline |
4554 | noinline |
|
|
4555 | static void |
3205 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
4556 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3206 | { |
4557 | { |
3207 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
4558 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3208 | |
4559 | |
3209 | ev_statdata prev = w->attr; |
4560 | ev_statdata prev = w->attr; |
… | |
… | |
3240 | ev_feed_event (EV_A_ w, EV_STAT); |
4591 | ev_feed_event (EV_A_ w, EV_STAT); |
3241 | } |
4592 | } |
3242 | } |
4593 | } |
3243 | |
4594 | |
3244 | void |
4595 | void |
3245 | ev_stat_start (EV_P_ ev_stat *w) |
4596 | ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT |
3246 | { |
4597 | { |
3247 | if (expect_false (ev_is_active (w))) |
4598 | if (expect_false (ev_is_active (w))) |
3248 | return; |
4599 | return; |
3249 | |
4600 | |
3250 | ev_stat_stat (EV_A_ w); |
4601 | ev_stat_stat (EV_A_ w); |
… | |
… | |
3271 | |
4622 | |
3272 | EV_FREQUENT_CHECK; |
4623 | EV_FREQUENT_CHECK; |
3273 | } |
4624 | } |
3274 | |
4625 | |
3275 | void |
4626 | void |
3276 | ev_stat_stop (EV_P_ ev_stat *w) |
4627 | ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT |
3277 | { |
4628 | { |
3278 | clear_pending (EV_A_ (W)w); |
4629 | clear_pending (EV_A_ (W)w); |
3279 | if (expect_false (!ev_is_active (w))) |
4630 | if (expect_false (!ev_is_active (w))) |
3280 | return; |
4631 | return; |
3281 | |
4632 | |
… | |
… | |
3297 | } |
4648 | } |
3298 | #endif |
4649 | #endif |
3299 | |
4650 | |
3300 | #if EV_IDLE_ENABLE |
4651 | #if EV_IDLE_ENABLE |
3301 | void |
4652 | void |
3302 | ev_idle_start (EV_P_ ev_idle *w) |
4653 | ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT |
3303 | { |
4654 | { |
3304 | if (expect_false (ev_is_active (w))) |
4655 | if (expect_false (ev_is_active (w))) |
3305 | return; |
4656 | return; |
3306 | |
4657 | |
3307 | pri_adjust (EV_A_ (W)w); |
4658 | pri_adjust (EV_A_ (W)w); |
… | |
… | |
3312 | int active = ++idlecnt [ABSPRI (w)]; |
4663 | int active = ++idlecnt [ABSPRI (w)]; |
3313 | |
4664 | |
3314 | ++idleall; |
4665 | ++idleall; |
3315 | ev_start (EV_A_ (W)w, active); |
4666 | ev_start (EV_A_ (W)w, active); |
3316 | |
4667 | |
3317 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
4668 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit); |
3318 | idles [ABSPRI (w)][active - 1] = w; |
4669 | idles [ABSPRI (w)][active - 1] = w; |
3319 | } |
4670 | } |
3320 | |
4671 | |
3321 | EV_FREQUENT_CHECK; |
4672 | EV_FREQUENT_CHECK; |
3322 | } |
4673 | } |
3323 | |
4674 | |
3324 | void |
4675 | void |
3325 | ev_idle_stop (EV_P_ ev_idle *w) |
4676 | ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT |
3326 | { |
4677 | { |
3327 | clear_pending (EV_A_ (W)w); |
4678 | clear_pending (EV_A_ (W)w); |
3328 | if (expect_false (!ev_is_active (w))) |
4679 | if (expect_false (!ev_is_active (w))) |
3329 | return; |
4680 | return; |
3330 | |
4681 | |
… | |
… | |
3344 | } |
4695 | } |
3345 | #endif |
4696 | #endif |
3346 | |
4697 | |
3347 | #if EV_PREPARE_ENABLE |
4698 | #if EV_PREPARE_ENABLE |
3348 | void |
4699 | void |
3349 | ev_prepare_start (EV_P_ ev_prepare *w) |
4700 | ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT |
3350 | { |
4701 | { |
3351 | if (expect_false (ev_is_active (w))) |
4702 | if (expect_false (ev_is_active (w))) |
3352 | return; |
4703 | return; |
3353 | |
4704 | |
3354 | EV_FREQUENT_CHECK; |
4705 | EV_FREQUENT_CHECK; |
3355 | |
4706 | |
3356 | ev_start (EV_A_ (W)w, ++preparecnt); |
4707 | ev_start (EV_A_ (W)w, ++preparecnt); |
3357 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
4708 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit); |
3358 | prepares [preparecnt - 1] = w; |
4709 | prepares [preparecnt - 1] = w; |
3359 | |
4710 | |
3360 | EV_FREQUENT_CHECK; |
4711 | EV_FREQUENT_CHECK; |
3361 | } |
4712 | } |
3362 | |
4713 | |
3363 | void |
4714 | void |
3364 | ev_prepare_stop (EV_P_ ev_prepare *w) |
4715 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT |
3365 | { |
4716 | { |
3366 | clear_pending (EV_A_ (W)w); |
4717 | clear_pending (EV_A_ (W)w); |
3367 | if (expect_false (!ev_is_active (w))) |
4718 | if (expect_false (!ev_is_active (w))) |
3368 | return; |
4719 | return; |
3369 | |
4720 | |
… | |
… | |
3382 | } |
4733 | } |
3383 | #endif |
4734 | #endif |
3384 | |
4735 | |
3385 | #if EV_CHECK_ENABLE |
4736 | #if EV_CHECK_ENABLE |
3386 | void |
4737 | void |
3387 | ev_check_start (EV_P_ ev_check *w) |
4738 | ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT |
3388 | { |
4739 | { |
3389 | if (expect_false (ev_is_active (w))) |
4740 | if (expect_false (ev_is_active (w))) |
3390 | return; |
4741 | return; |
3391 | |
4742 | |
3392 | EV_FREQUENT_CHECK; |
4743 | EV_FREQUENT_CHECK; |
3393 | |
4744 | |
3394 | ev_start (EV_A_ (W)w, ++checkcnt); |
4745 | ev_start (EV_A_ (W)w, ++checkcnt); |
3395 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
4746 | array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit); |
3396 | checks [checkcnt - 1] = w; |
4747 | checks [checkcnt - 1] = w; |
3397 | |
4748 | |
3398 | EV_FREQUENT_CHECK; |
4749 | EV_FREQUENT_CHECK; |
3399 | } |
4750 | } |
3400 | |
4751 | |
3401 | void |
4752 | void |
3402 | ev_check_stop (EV_P_ ev_check *w) |
4753 | ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT |
3403 | { |
4754 | { |
3404 | clear_pending (EV_A_ (W)w); |
4755 | clear_pending (EV_A_ (W)w); |
3405 | if (expect_false (!ev_is_active (w))) |
4756 | if (expect_false (!ev_is_active (w))) |
3406 | return; |
4757 | return; |
3407 | |
4758 | |
… | |
… | |
3419 | EV_FREQUENT_CHECK; |
4770 | EV_FREQUENT_CHECK; |
3420 | } |
4771 | } |
3421 | #endif |
4772 | #endif |
3422 | |
4773 | |
3423 | #if EV_EMBED_ENABLE |
4774 | #if EV_EMBED_ENABLE |
3424 | void noinline |
4775 | noinline |
|
|
4776 | void |
3425 | ev_embed_sweep (EV_P_ ev_embed *w) |
4777 | ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT |
3426 | { |
4778 | { |
3427 | ev_run (w->other, EVRUN_NOWAIT); |
4779 | ev_run (w->other, EVRUN_NOWAIT); |
3428 | } |
4780 | } |
3429 | |
4781 | |
3430 | static void |
4782 | static void |
… | |
… | |
3478 | ev_idle_stop (EV_A_ idle); |
4830 | ev_idle_stop (EV_A_ idle); |
3479 | } |
4831 | } |
3480 | #endif |
4832 | #endif |
3481 | |
4833 | |
3482 | void |
4834 | void |
3483 | ev_embed_start (EV_P_ ev_embed *w) |
4835 | ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT |
3484 | { |
4836 | { |
3485 | if (expect_false (ev_is_active (w))) |
4837 | if (expect_false (ev_is_active (w))) |
3486 | return; |
4838 | return; |
3487 | |
4839 | |
3488 | { |
4840 | { |
… | |
… | |
3509 | |
4861 | |
3510 | EV_FREQUENT_CHECK; |
4862 | EV_FREQUENT_CHECK; |
3511 | } |
4863 | } |
3512 | |
4864 | |
3513 | void |
4865 | void |
3514 | ev_embed_stop (EV_P_ ev_embed *w) |
4866 | ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT |
3515 | { |
4867 | { |
3516 | clear_pending (EV_A_ (W)w); |
4868 | clear_pending (EV_A_ (W)w); |
3517 | if (expect_false (!ev_is_active (w))) |
4869 | if (expect_false (!ev_is_active (w))) |
3518 | return; |
4870 | return; |
3519 | |
4871 | |
… | |
… | |
3529 | } |
4881 | } |
3530 | #endif |
4882 | #endif |
3531 | |
4883 | |
3532 | #if EV_FORK_ENABLE |
4884 | #if EV_FORK_ENABLE |
3533 | void |
4885 | void |
3534 | ev_fork_start (EV_P_ ev_fork *w) |
4886 | ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT |
3535 | { |
4887 | { |
3536 | if (expect_false (ev_is_active (w))) |
4888 | if (expect_false (ev_is_active (w))) |
3537 | return; |
4889 | return; |
3538 | |
4890 | |
3539 | EV_FREQUENT_CHECK; |
4891 | EV_FREQUENT_CHECK; |
3540 | |
4892 | |
3541 | ev_start (EV_A_ (W)w, ++forkcnt); |
4893 | ev_start (EV_A_ (W)w, ++forkcnt); |
3542 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
4894 | array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit); |
3543 | forks [forkcnt - 1] = w; |
4895 | forks [forkcnt - 1] = w; |
3544 | |
4896 | |
3545 | EV_FREQUENT_CHECK; |
4897 | EV_FREQUENT_CHECK; |
3546 | } |
4898 | } |
3547 | |
4899 | |
3548 | void |
4900 | void |
3549 | ev_fork_stop (EV_P_ ev_fork *w) |
4901 | ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT |
3550 | { |
4902 | { |
3551 | clear_pending (EV_A_ (W)w); |
4903 | clear_pending (EV_A_ (W)w); |
3552 | if (expect_false (!ev_is_active (w))) |
4904 | if (expect_false (!ev_is_active (w))) |
3553 | return; |
4905 | return; |
3554 | |
4906 | |
… | |
… | |
3565 | |
4917 | |
3566 | EV_FREQUENT_CHECK; |
4918 | EV_FREQUENT_CHECK; |
3567 | } |
4919 | } |
3568 | #endif |
4920 | #endif |
3569 | |
4921 | |
3570 | #if EV_ASYNC_ENABLE |
4922 | #if EV_CLEANUP_ENABLE |
3571 | void |
4923 | void |
3572 | ev_async_start (EV_P_ ev_async *w) |
4924 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
3573 | { |
4925 | { |
3574 | if (expect_false (ev_is_active (w))) |
4926 | if (expect_false (ev_is_active (w))) |
3575 | return; |
4927 | return; |
3576 | |
4928 | |
3577 | w->sent = 0; |
|
|
3578 | |
|
|
3579 | evpipe_init (EV_A); |
|
|
3580 | |
|
|
3581 | EV_FREQUENT_CHECK; |
4929 | EV_FREQUENT_CHECK; |
3582 | |
4930 | |
3583 | ev_start (EV_A_ (W)w, ++asynccnt); |
4931 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
3584 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
4932 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit); |
3585 | asyncs [asynccnt - 1] = w; |
4933 | cleanups [cleanupcnt - 1] = w; |
3586 | |
4934 | |
|
|
4935 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4936 | ev_unref (EV_A); |
3587 | EV_FREQUENT_CHECK; |
4937 | EV_FREQUENT_CHECK; |
3588 | } |
4938 | } |
3589 | |
4939 | |
3590 | void |
4940 | void |
3591 | ev_async_stop (EV_P_ ev_async *w) |
4941 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
3592 | { |
4942 | { |
3593 | clear_pending (EV_A_ (W)w); |
4943 | clear_pending (EV_A_ (W)w); |
3594 | if (expect_false (!ev_is_active (w))) |
4944 | if (expect_false (!ev_is_active (w))) |
3595 | return; |
4945 | return; |
3596 | |
4946 | |
3597 | EV_FREQUENT_CHECK; |
4947 | EV_FREQUENT_CHECK; |
|
|
4948 | ev_ref (EV_A); |
|
|
4949 | |
|
|
4950 | { |
|
|
4951 | int active = ev_active (w); |
|
|
4952 | |
|
|
4953 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4954 | ev_active (cleanups [active - 1]) = active; |
|
|
4955 | } |
|
|
4956 | |
|
|
4957 | ev_stop (EV_A_ (W)w); |
|
|
4958 | |
|
|
4959 | EV_FREQUENT_CHECK; |
|
|
4960 | } |
|
|
4961 | #endif |
|
|
4962 | |
|
|
4963 | #if EV_ASYNC_ENABLE |
|
|
4964 | void |
|
|
4965 | ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
4966 | { |
|
|
4967 | if (expect_false (ev_is_active (w))) |
|
|
4968 | return; |
|
|
4969 | |
|
|
4970 | w->sent = 0; |
|
|
4971 | |
|
|
4972 | evpipe_init (EV_A); |
|
|
4973 | |
|
|
4974 | EV_FREQUENT_CHECK; |
|
|
4975 | |
|
|
4976 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4977 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit); |
|
|
4978 | asyncs [asynccnt - 1] = w; |
|
|
4979 | |
|
|
4980 | EV_FREQUENT_CHECK; |
|
|
4981 | } |
|
|
4982 | |
|
|
4983 | void |
|
|
4984 | ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
4985 | { |
|
|
4986 | clear_pending (EV_A_ (W)w); |
|
|
4987 | if (expect_false (!ev_is_active (w))) |
|
|
4988 | return; |
|
|
4989 | |
|
|
4990 | EV_FREQUENT_CHECK; |
3598 | |
4991 | |
3599 | { |
4992 | { |
3600 | int active = ev_active (w); |
4993 | int active = ev_active (w); |
3601 | |
4994 | |
3602 | asyncs [active - 1] = asyncs [--asynccnt]; |
4995 | asyncs [active - 1] = asyncs [--asynccnt]; |
… | |
… | |
3607 | |
5000 | |
3608 | EV_FREQUENT_CHECK; |
5001 | EV_FREQUENT_CHECK; |
3609 | } |
5002 | } |
3610 | |
5003 | |
3611 | void |
5004 | void |
3612 | ev_async_send (EV_P_ ev_async *w) |
5005 | ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT |
3613 | { |
5006 | { |
3614 | w->sent = 1; |
5007 | w->sent = 1; |
3615 | evpipe_write (EV_A_ &async_pending); |
5008 | evpipe_write (EV_A_ &async_pending); |
3616 | } |
5009 | } |
3617 | #endif |
5010 | #endif |
… | |
… | |
3654 | |
5047 | |
3655 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
5048 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
3656 | } |
5049 | } |
3657 | |
5050 | |
3658 | void |
5051 | void |
3659 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
5052 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT |
3660 | { |
5053 | { |
3661 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
5054 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3662 | |
|
|
3663 | if (expect_false (!once)) |
|
|
3664 | { |
|
|
3665 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
|
|
3666 | return; |
|
|
3667 | } |
|
|
3668 | |
5055 | |
3669 | once->cb = cb; |
5056 | once->cb = cb; |
3670 | once->arg = arg; |
5057 | once->arg = arg; |
3671 | |
5058 | |
3672 | ev_init (&once->io, once_cb_io); |
5059 | ev_init (&once->io, once_cb_io); |
… | |
… | |
3685 | } |
5072 | } |
3686 | |
5073 | |
3687 | /*****************************************************************************/ |
5074 | /*****************************************************************************/ |
3688 | |
5075 | |
3689 | #if EV_WALK_ENABLE |
5076 | #if EV_WALK_ENABLE |
|
|
5077 | ecb_cold |
3690 | void |
5078 | void |
3691 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
5079 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT |
3692 | { |
5080 | { |
3693 | int i, j; |
5081 | int i, j; |
3694 | ev_watcher_list *wl, *wn; |
5082 | ev_watcher_list *wl, *wn; |
3695 | |
5083 | |
3696 | if (types & (EV_IO | EV_EMBED)) |
5084 | if (types & (EV_IO | EV_EMBED)) |
… | |
… | |
3739 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
5127 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
3740 | #endif |
5128 | #endif |
3741 | |
5129 | |
3742 | #if EV_IDLE_ENABLE |
5130 | #if EV_IDLE_ENABLE |
3743 | if (types & EV_IDLE) |
5131 | if (types & EV_IDLE) |
3744 | for (j = NUMPRI; i--; ) |
5132 | for (j = NUMPRI; j--; ) |
3745 | for (i = idlecnt [j]; i--; ) |
5133 | for (i = idlecnt [j]; i--; ) |
3746 | cb (EV_A_ EV_IDLE, idles [j][i]); |
5134 | cb (EV_A_ EV_IDLE, idles [j][i]); |
3747 | #endif |
5135 | #endif |
3748 | |
5136 | |
3749 | #if EV_FORK_ENABLE |
5137 | #if EV_FORK_ENABLE |
… | |
… | |
3802 | |
5190 | |
3803 | #if EV_MULTIPLICITY |
5191 | #if EV_MULTIPLICITY |
3804 | #include "ev_wrap.h" |
5192 | #include "ev_wrap.h" |
3805 | #endif |
5193 | #endif |
3806 | |
5194 | |
3807 | EV_CPP(}) |
|
|
3808 | |
|
|