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Comparing libev/ev.c (file contents):
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC vs.
Revision 1.389 by root, Wed Aug 3 15:31:23 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 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,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
163 173
164#include <assert.h> 174#include <assert.h>
165#include <errno.h> 175#include <errno.h>
166#include <sys/types.h> 176#include <sys/types.h>
167#include <time.h> 177#include <time.h>
178#include <limits.h>
168 179
169#include <signal.h> 180#include <signal.h>
170 181
171#ifdef EV_H 182#ifdef EV_H
172# include EV_H 183# include EV_H
173#else 184#else
174# include "ev.h" 185# include "ev.h"
175#endif 186#endif
187
188EV_CPP(extern "C" {)
176 189
177#ifndef _WIN32 190#ifndef _WIN32
178# include <sys/time.h> 191# include <sys/time.h>
179# include <sys/wait.h> 192# include <sys/wait.h>
180# include <unistd.h> 193# include <unistd.h>
… …
183# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
184# include <windows.h> 197# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
187# endif 200# endif
201# undef EV_AVOID_STDIO
188#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
189 211
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
191 213
192/* try to deduce the maximum number of signals on this platform */ 214/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 215#if defined (EV_NSIG)
… …
205#elif defined (MAXSIG) 227#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1) 228# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 229#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1) 230# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 231#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 233#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 235#else
214# error "unable to find value for NSIG, please report" 236# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */ 237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
216# define EV_NSIG 65 239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
217#endif 244#endif
218 245
219#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 249# else
223# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
224# endif 251# endif
225#endif 252#endif
226 253
227#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 257# else
231# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
232# endif 259# endif
233#endif 260#endif
234 261
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 264#endif
238 265
239#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 269# else
243# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
244# endif 271# endif
245#endif 272#endif
246 273
247#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 276#endif
250 277
251#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
252# ifdef _WIN32 279# ifdef _WIN32
253# define EV_USE_POLL 0 280# define EV_USE_POLL 0
254# else 281# else
255# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 283# endif
257#endif 284#endif
258 285
259#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 289# else
263# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
264# endif 291# endif
265#endif 292#endif
266 293
… …
272# define EV_USE_PORT 0 299# define EV_USE_PORT 0
273#endif 300#endif
274 301
275#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 305# else
279# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
280# endif 307# endif
281#endif 308#endif
282 309
283#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 312#endif
290 313
291#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 316#endif
298 317
299#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 321# else
303# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
304# endif 323# endif
305#endif 324#endif
306 325
307#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 329# else
311# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
312# endif 331# endif
313#endif 332#endif
314 333
… …
317# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
319#endif 338#endif
320 339
321#ifndef EV_VERIFY 340#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 342#endif
324 343
325#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 346#endif
328 347
329#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 350#endif
332 351
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
366# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
367# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
368#endif 387#endif
369 388
370#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
371# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
372# include <sys/select.h> 392# include <sys/select.h>
373# endif 393# endif
374#endif 394#endif
375 395
376#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h> 397# include <sys/statfs.h>
379# include <sys/inotify.h> 398# include <sys/inotify.h>
380/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
381# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
399# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
400# else 419# else
401# define EFD_CLOEXEC 02000000 420# define EFD_CLOEXEC 02000000
402# endif 421# endif
403# endif 422# endif
404# ifdef __cplusplus
405extern "C" {
406# endif
407int eventfd (unsigned int initval, int flags); 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
408# ifdef __cplusplus
409}
410# endif
411#endif 424#endif
412 425
413#if EV_USE_SIGNALFD 426#if EV_USE_SIGNALFD
414/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
415# include <stdint.h> 428# include <stdint.h>
… …
421# define SFD_CLOEXEC O_CLOEXEC 434# define SFD_CLOEXEC O_CLOEXEC
422# else 435# else
423# define SFD_CLOEXEC 02000000 436# define SFD_CLOEXEC 02000000
424# endif 437# endif
425# endif 438# endif
426# ifdef __cplusplus
427extern "C" {
428# endif
429int signalfd (int fd, const sigset_t *mask, int flags); 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430 440
431struct signalfd_siginfo 441struct signalfd_siginfo
432{ 442{
433 uint32_t ssi_signo; 443 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)]; 444 char pad[128 - sizeof (uint32_t)];
435}; 445};
436# ifdef __cplusplus
437}
438# endif 446#endif
439#endif
440
441 447
442/**/ 448/**/
443 449
444#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
445# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
446#else 452#else
447# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
448#endif 454#endif
449 455
450/* 456/*
451 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
452 * It is added to ev_rt_now when scheduling periodics
453 * to ensure progress, time-wise, even when rounding
454 * errors are against us.
455 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
456 * Better solutions welcome.
457 */ 459 */
458#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
459 462
460#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
461#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
462 465
463#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
465# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
466#else 493#else
467# define expect(expr,value) (expr) 494 #define ecb_inline static
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
472#endif 508 #endif
509#endif
473 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400 /* VC++ 2005 */
517 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
518 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
519 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
520 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
521 #elif defined(_WIN32)
522 #include <WinNT.h>
523 #define ECB_MEMORY_FENCE MemoryBarrier ()
524 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
525 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
526 #endif
527#endif
528
529#ifndef ECB_MEMORY_FENCE
530 #include <pthread.h>
531
532 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
533 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
534 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
535 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
536#endif
537
538#if ECB_GCC_VERSION(3,1)
539 #define ecb_attribute(attrlist) __attribute__(attrlist)
540 #define ecb_is_constant(expr) __builtin_constant_p (expr)
541 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
542 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
543#else
544 #define ecb_attribute(attrlist)
545 #define ecb_is_constant(expr) 0
546 #define ecb_expect(expr,value) (expr)
547 #define ecb_prefetch(addr,rw,locality)
548#endif
549
550#define ecb_noinline ecb_attribute ((__noinline__))
551#define ecb_noreturn ecb_attribute ((__noreturn__))
552#define ecb_unused ecb_attribute ((__unused__))
553#define ecb_const ecb_attribute ((__const__))
554#define ecb_pure ecb_attribute ((__pure__))
555
556#if ECB_GCC_VERSION(4,3)
557 #define ecb_artificial ecb_attribute ((__artificial__))
558 #define ecb_hot ecb_attribute ((__hot__))
559 #define ecb_cold ecb_attribute ((__cold__))
560#else
561 #define ecb_artificial
562 #define ecb_hot
563 #define ecb_cold
564#endif
565
566/* put around conditional expressions if you are very sure that the */
567/* expression is mostly true or mostly false. note that these return */
568/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 569#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 570#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
571/* ecb.h end */
572
573#define expect_false(cond) ecb_expect_false (cond)
574#define expect_true(cond) ecb_expect_true (cond)
575#define noinline ecb_noinline
576
476#define inline_size static inline 577#define inline_size ecb_inline
477 578
478#if EV_MINIMAL 579#if EV_FEATURE_CODE
580# define inline_speed ecb_inline
581#else
479# define inline_speed static noinline 582# define inline_speed static noinline
480#else
481# define inline_speed static inline
482#endif 583#endif
483 584
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 585#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 586
486#if EV_MINPRI == EV_MAXPRI 587#if EV_MINPRI == EV_MAXPRI
… …
499#define ev_active(w) ((W)(w))->active 600#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at 601#define ev_at(w) ((WT)(w))->at
501 602
502#if EV_USE_REALTIME 603#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 604/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architetcures */ 605/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 606static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif 607#endif
507 608
508#if EV_USE_MONOTONIC 609#if EV_USE_MONOTONIC
509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 610static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
523# include "ev_win32.c" 624# include "ev_win32.c"
524#endif 625#endif
525 626
526/*****************************************************************************/ 627/*****************************************************************************/
527 628
629/* define a suitable floor function (only used by periodics atm) */
630
631#if EV_USE_FLOOR
632# include <math.h>
633# define ev_floor(v) floor (v)
634#else
635
636#include <float.h>
637
638/* a floor() replacement function, should be independent of ev_tstamp type */
639static ev_tstamp noinline
640ev_floor (ev_tstamp v)
641{
642 /* the choice of shift factor is not terribly important */
643#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
645#else
646 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
647#endif
648
649 /* argument too large for an unsigned long? */
650 if (expect_false (v >= shift))
651 {
652 ev_tstamp f;
653
654 if (v == v - 1.)
655 return v; /* very large number */
656
657 f = shift * ev_floor (v * (1. / shift));
658 return f + ev_floor (v - f);
659 }
660
661 /* special treatment for negative args? */
662 if (expect_false (v < 0.))
663 {
664 ev_tstamp f = -ev_floor (-v);
665
666 return f - (f == v ? 0 : 1);
667 }
668
669 /* fits into an unsigned long */
670 return (unsigned long)v;
671}
672
673#endif
674
675/*****************************************************************************/
676
677#ifdef __linux
678# include <sys/utsname.h>
679#endif
680
681static unsigned int noinline ecb_cold
682ev_linux_version (void)
683{
684#ifdef __linux
685 unsigned int v = 0;
686 struct utsname buf;
687 int i;
688 char *p = buf.release;
689
690 if (uname (&buf))
691 return 0;
692
693 for (i = 3+1; --i; )
694 {
695 unsigned int c = 0;
696
697 for (;;)
698 {
699 if (*p >= '0' && *p <= '9')
700 c = c * 10 + *p++ - '0';
701 else
702 {
703 p += *p == '.';
704 break;
705 }
706 }
707
708 v = (v << 8) | c;
709 }
710
711 return v;
712#else
713 return 0;
714#endif
715}
716
717/*****************************************************************************/
718
719#if EV_AVOID_STDIO
720static void noinline ecb_cold
721ev_printerr (const char *msg)
722{
723 write (STDERR_FILENO, msg, strlen (msg));
724}
725#endif
726
528static void (*syserr_cb)(const char *msg); 727static void (*syserr_cb)(const char *msg);
529 728
530void 729void ecb_cold
531ev_set_syserr_cb (void (*cb)(const char *msg)) 730ev_set_syserr_cb (void (*cb)(const char *msg))
532{ 731{
533 syserr_cb = cb; 732 syserr_cb = cb;
534} 733}
535 734
536static void noinline 735static void noinline ecb_cold
537ev_syserr (const char *msg) 736ev_syserr (const char *msg)
538{ 737{
539 if (!msg) 738 if (!msg)
540 msg = "(libev) system error"; 739 msg = "(libev) system error";
541 740
542 if (syserr_cb) 741 if (syserr_cb)
543 syserr_cb (msg); 742 syserr_cb (msg);
544 else 743 else
545 { 744 {
745#if EV_AVOID_STDIO
746 ev_printerr (msg);
747 ev_printerr (": ");
748 ev_printerr (strerror (errno));
749 ev_printerr ("\n");
750#else
546 perror (msg); 751 perror (msg);
752#endif
547 abort (); 753 abort ();
548 } 754 }
549} 755}
550 756
551static void * 757static void *
552ev_realloc_emul (void *ptr, long size) 758ev_realloc_emul (void *ptr, long size)
553{ 759{
760#if __GLIBC__
761 return realloc (ptr, size);
762#else
554 /* some systems, notably openbsd and darwin, fail to properly 763 /* some systems, notably openbsd and darwin, fail to properly
555 * implement realloc (x, 0) (as required by both ansi c-98 and 764 * implement realloc (x, 0) (as required by both ansi c-89 and
556 * the single unix specification, so work around them here. 765 * the single unix specification, so work around them here.
557 */ 766 */
558 767
559 if (size) 768 if (size)
560 return realloc (ptr, size); 769 return realloc (ptr, size);
561 770
562 free (ptr); 771 free (ptr);
563 return 0; 772 return 0;
773#endif
564} 774}
565 775
566static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 776static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
567 777
568void 778void ecb_cold
569ev_set_allocator (void *(*cb)(void *ptr, long size)) 779ev_set_allocator (void *(*cb)(void *ptr, long size))
570{ 780{
571 alloc = cb; 781 alloc = cb;
572} 782}
573 783
… …
576{ 786{
577 ptr = alloc (ptr, size); 787 ptr = alloc (ptr, size);
578 788
579 if (!ptr && size) 789 if (!ptr && size)
580 { 790 {
791#if EV_AVOID_STDIO
792 ev_printerr ("(libev) memory allocation failed, aborting.\n");
793#else
581 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 794 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
795#endif
582 abort (); 796 abort ();
583 } 797 }
584 798
585 return ptr; 799 return ptr;
586} 800}
… …
602 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 816 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
603 unsigned char unused; 817 unsigned char unused;
604#if EV_USE_EPOLL 818#if EV_USE_EPOLL
605 unsigned int egen; /* generation counter to counter epoll bugs */ 819 unsigned int egen; /* generation counter to counter epoll bugs */
606#endif 820#endif
607#if EV_SELECT_IS_WINSOCKET 821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
608 SOCKET handle; 822 SOCKET handle;
823#endif
824#if EV_USE_IOCP
825 OVERLAPPED or, ow;
609#endif 826#endif
610} ANFD; 827} ANFD;
611 828
612/* stores the pending event set for a given watcher */ 829/* stores the pending event set for a given watcher */
613typedef struct 830typedef struct
… …
668 885
669 static int ev_default_loop_ptr; 886 static int ev_default_loop_ptr;
670 887
671#endif 888#endif
672 889
673#if EV_MINIMAL < 2 890#if EV_FEATURE_API
674# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 891# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
675# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 892# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
676# define EV_INVOKE_PENDING invoke_cb (EV_A) 893# define EV_INVOKE_PENDING invoke_cb (EV_A)
677#else 894#else
678# define EV_RELEASE_CB (void)0 895# define EV_RELEASE_CB (void)0
679# define EV_ACQUIRE_CB (void)0 896# define EV_ACQUIRE_CB (void)0
680# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 897# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
681#endif 898#endif
682 899
683#define EVUNLOOP_RECURSE 0x80 900#define EVBREAK_RECURSE 0x80
684 901
685/*****************************************************************************/ 902/*****************************************************************************/
686 903
687#ifndef EV_HAVE_EV_TIME 904#ifndef EV_HAVE_EV_TIME
688ev_tstamp 905ev_tstamp
… …
732 if (delay > 0.) 949 if (delay > 0.)
733 { 950 {
734#if EV_USE_NANOSLEEP 951#if EV_USE_NANOSLEEP
735 struct timespec ts; 952 struct timespec ts;
736 953
737 ts.tv_sec = (time_t)delay; 954 EV_TS_SET (ts, delay);
738 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
739
740 nanosleep (&ts, 0); 955 nanosleep (&ts, 0);
741#elif defined(_WIN32) 956#elif defined(_WIN32)
742 Sleep ((unsigned long)(delay * 1e3)); 957 Sleep ((unsigned long)(delay * 1e3));
743#else 958#else
744 struct timeval tv; 959 struct timeval tv;
745 960
746 tv.tv_sec = (time_t)delay;
747 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
748
749 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 961 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
750 /* something not guaranteed by newer posix versions, but guaranteed */ 962 /* something not guaranteed by newer posix versions, but guaranteed */
751 /* by older ones */ 963 /* by older ones */
964 EV_TV_SET (tv, delay);
752 select (0, 0, 0, 0, &tv); 965 select (0, 0, 0, 0, &tv);
753#endif 966#endif
754 } 967 }
755} 968}
756 969
757/*****************************************************************************/ 970/*****************************************************************************/
758 971
759#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 972#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
760 973
761/* find a suitable new size for the given array, */ 974/* find a suitable new size for the given array, */
762/* hopefully by rounding to a ncie-to-malloc size */ 975/* hopefully by rounding to a nice-to-malloc size */
763inline_size int 976inline_size int
764array_nextsize (int elem, int cur, int cnt) 977array_nextsize (int elem, int cur, int cnt)
765{ 978{
766 int ncur = cur + 1; 979 int ncur = cur + 1;
767 980
… …
779 } 992 }
780 993
781 return ncur; 994 return ncur;
782} 995}
783 996
784static noinline void * 997static void * noinline ecb_cold
785array_realloc (int elem, void *base, int *cur, int cnt) 998array_realloc (int elem, void *base, int *cur, int cnt)
786{ 999{
787 *cur = array_nextsize (elem, *cur, cnt); 1000 *cur = array_nextsize (elem, *cur, cnt);
788 return ev_realloc (base, elem * *cur); 1001 return ev_realloc (base, elem * *cur);
789} 1002}
… …
792 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1005 memset ((void *)(base), 0, sizeof (*(base)) * (count))
793 1006
794#define array_needsize(type,base,cur,cnt,init) \ 1007#define array_needsize(type,base,cur,cnt,init) \
795 if (expect_false ((cnt) > (cur))) \ 1008 if (expect_false ((cnt) > (cur))) \
796 { \ 1009 { \
797 int ocur_ = (cur); \ 1010 int ecb_unused ocur_ = (cur); \
798 (base) = (type *)array_realloc \ 1011 (base) = (type *)array_realloc \
799 (sizeof (type), (base), &(cur), (cnt)); \ 1012 (sizeof (type), (base), &(cur), (cnt)); \
800 init ((base) + (ocur_), (cur) - ocur_); \ 1013 init ((base) + (ocur_), (cur) - ocur_); \
801 } 1014 }
802 1015
… …
863} 1076}
864 1077
865/*****************************************************************************/ 1078/*****************************************************************************/
866 1079
867inline_speed void 1080inline_speed void
868fd_event_nc (EV_P_ int fd, int revents) 1081fd_event_nocheck (EV_P_ int fd, int revents)
869{ 1082{
870 ANFD *anfd = anfds + fd; 1083 ANFD *anfd = anfds + fd;
871 ev_io *w; 1084 ev_io *w;
872 1085
873 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1086 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
885fd_event (EV_P_ int fd, int revents) 1098fd_event (EV_P_ int fd, int revents)
886{ 1099{
887 ANFD *anfd = anfds + fd; 1100 ANFD *anfd = anfds + fd;
888 1101
889 if (expect_true (!anfd->reify)) 1102 if (expect_true (!anfd->reify))
890 fd_event_nc (EV_A_ fd, revents); 1103 fd_event_nocheck (EV_A_ fd, revents);
891} 1104}
892 1105
893void 1106void
894ev_feed_fd_event (EV_P_ int fd, int revents) 1107ev_feed_fd_event (EV_P_ int fd, int revents)
895{ 1108{
896 if (fd >= 0 && fd < anfdmax) 1109 if (fd >= 0 && fd < anfdmax)
897 fd_event_nc (EV_A_ fd, revents); 1110 fd_event_nocheck (EV_A_ fd, revents);
898} 1111}
899 1112
900/* make sure the external fd watch events are in-sync */ 1113/* make sure the external fd watch events are in-sync */
901/* with the kernel/libev internal state */ 1114/* with the kernel/libev internal state */
902inline_size void 1115inline_size void
903fd_reify (EV_P) 1116fd_reify (EV_P)
904{ 1117{
905 int i; 1118 int i;
906 1119
1120#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1121 for (i = 0; i < fdchangecnt; ++i)
1122 {
1123 int fd = fdchanges [i];
1124 ANFD *anfd = anfds + fd;
1125
1126 if (anfd->reify & EV__IOFDSET && anfd->head)
1127 {
1128 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1129
1130 if (handle != anfd->handle)
1131 {
1132 unsigned long arg;
1133
1134 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1135
1136 /* handle changed, but fd didn't - we need to do it in two steps */
1137 backend_modify (EV_A_ fd, anfd->events, 0);
1138 anfd->events = 0;
1139 anfd->handle = handle;
1140 }
1141 }
1142 }
1143#endif
1144
907 for (i = 0; i < fdchangecnt; ++i) 1145 for (i = 0; i < fdchangecnt; ++i)
908 { 1146 {
909 int fd = fdchanges [i]; 1147 int fd = fdchanges [i];
910 ANFD *anfd = anfds + fd; 1148 ANFD *anfd = anfds + fd;
911 ev_io *w; 1149 ev_io *w;
912 1150
913 unsigned char events = 0; 1151 unsigned char o_events = anfd->events;
1152 unsigned char o_reify = anfd->reify;
914 1153
915 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1154 anfd->reify = 0;
916 events |= (unsigned char)w->events;
917 1155
918#if EV_SELECT_IS_WINSOCKET 1156 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
919 if (events)
920 { 1157 {
921 unsigned long arg; 1158 anfd->events = 0;
922 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1159
923 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1160 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1161 anfd->events |= (unsigned char)w->events;
1162
1163 if (o_events != anfd->events)
1164 o_reify = EV__IOFDSET; /* actually |= */
924 } 1165 }
925#endif
926 1166
927 { 1167 if (o_reify & EV__IOFDSET)
928 unsigned char o_events = anfd->events;
929 unsigned char o_reify = anfd->reify;
930
931 anfd->reify = 0;
932 anfd->events = events;
933
934 if (o_events != events || o_reify & EV__IOFDSET)
935 backend_modify (EV_A_ fd, o_events, events); 1168 backend_modify (EV_A_ fd, o_events, anfd->events);
936 }
937 } 1169 }
938 1170
939 fdchangecnt = 0; 1171 fdchangecnt = 0;
940} 1172}
941 1173
… …
953 fdchanges [fdchangecnt - 1] = fd; 1185 fdchanges [fdchangecnt - 1] = fd;
954 } 1186 }
955} 1187}
956 1188
957/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1189/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
958inline_speed void 1190inline_speed void ecb_cold
959fd_kill (EV_P_ int fd) 1191fd_kill (EV_P_ int fd)
960{ 1192{
961 ev_io *w; 1193 ev_io *w;
962 1194
963 while ((w = (ev_io *)anfds [fd].head)) 1195 while ((w = (ev_io *)anfds [fd].head))
… …
965 ev_io_stop (EV_A_ w); 1197 ev_io_stop (EV_A_ w);
966 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1198 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
967 } 1199 }
968} 1200}
969 1201
970/* check whether the given fd is atcually valid, for error recovery */ 1202/* check whether the given fd is actually valid, for error recovery */
971inline_size int 1203inline_size int ecb_cold
972fd_valid (int fd) 1204fd_valid (int fd)
973{ 1205{
974#ifdef _WIN32 1206#ifdef _WIN32
975 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1207 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
976#else 1208#else
977 return fcntl (fd, F_GETFD) != -1; 1209 return fcntl (fd, F_GETFD) != -1;
978#endif 1210#endif
979} 1211}
980 1212
981/* called on EBADF to verify fds */ 1213/* called on EBADF to verify fds */
982static void noinline 1214static void noinline ecb_cold
983fd_ebadf (EV_P) 1215fd_ebadf (EV_P)
984{ 1216{
985 int fd; 1217 int fd;
986 1218
987 for (fd = 0; fd < anfdmax; ++fd) 1219 for (fd = 0; fd < anfdmax; ++fd)
… …
989 if (!fd_valid (fd) && errno == EBADF) 1221 if (!fd_valid (fd) && errno == EBADF)
990 fd_kill (EV_A_ fd); 1222 fd_kill (EV_A_ fd);
991} 1223}
992 1224
993/* called on ENOMEM in select/poll to kill some fds and retry */ 1225/* called on ENOMEM in select/poll to kill some fds and retry */
994static void noinline 1226static void noinline ecb_cold
995fd_enomem (EV_P) 1227fd_enomem (EV_P)
996{ 1228{
997 int fd; 1229 int fd;
998 1230
999 for (fd = anfdmax; fd--; ) 1231 for (fd = anfdmax; fd--; )
… …
1017 anfds [fd].emask = 0; 1249 anfds [fd].emask = 0;
1018 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1250 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1019 } 1251 }
1020} 1252}
1021 1253
1254/* used to prepare libev internal fd's */
1255/* this is not fork-safe */
1256inline_speed void
1257fd_intern (int fd)
1258{
1259#ifdef _WIN32
1260 unsigned long arg = 1;
1261 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1262#else
1263 fcntl (fd, F_SETFD, FD_CLOEXEC);
1264 fcntl (fd, F_SETFL, O_NONBLOCK);
1265#endif
1266}
1267
1022/*****************************************************************************/ 1268/*****************************************************************************/
1023 1269
1024/* 1270/*
1025 * the heap functions want a real array index. array index 0 uis guaranteed to not 1271 * the heap functions want a real array index. array index 0 is guaranteed to not
1026 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1272 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1027 * the branching factor of the d-tree. 1273 * the branching factor of the d-tree.
1028 */ 1274 */
1029 1275
1030/* 1276/*
… …
1178 1424
1179static ANSIG signals [EV_NSIG - 1]; 1425static ANSIG signals [EV_NSIG - 1];
1180 1426
1181/*****************************************************************************/ 1427/*****************************************************************************/
1182 1428
1183/* used to prepare libev internal fd's */ 1429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1184/* this is not fork-safe */
1185inline_speed void
1186fd_intern (int fd)
1187{
1188#ifdef _WIN32
1189 unsigned long arg = 1;
1190 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1191#else
1192 fcntl (fd, F_SETFD, FD_CLOEXEC);
1193 fcntl (fd, F_SETFL, O_NONBLOCK);
1194#endif
1195}
1196 1430
1197static void noinline 1431static void noinline ecb_cold
1198evpipe_init (EV_P) 1432evpipe_init (EV_P)
1199{ 1433{
1200 if (!ev_is_active (&pipe_w)) 1434 if (!ev_is_active (&pipe_w))
1201 { 1435 {
1202#if EV_USE_EVENTFD 1436# if EV_USE_EVENTFD
1203 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1437 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1204 if (evfd < 0 && errno == EINVAL) 1438 if (evfd < 0 && errno == EINVAL)
1205 evfd = eventfd (0, 0); 1439 evfd = eventfd (0, 0);
1206 1440
1207 if (evfd >= 0) 1441 if (evfd >= 0)
… …
1209 evpipe [0] = -1; 1443 evpipe [0] = -1;
1210 fd_intern (evfd); /* doing it twice doesn't hurt */ 1444 fd_intern (evfd); /* doing it twice doesn't hurt */
1211 ev_io_set (&pipe_w, evfd, EV_READ); 1445 ev_io_set (&pipe_w, evfd, EV_READ);
1212 } 1446 }
1213 else 1447 else
1214#endif 1448# endif
1215 { 1449 {
1216 while (pipe (evpipe)) 1450 while (pipe (evpipe))
1217 ev_syserr ("(libev) error creating signal/async pipe"); 1451 ev_syserr ("(libev) error creating signal/async pipe");
1218 1452
1219 fd_intern (evpipe [0]); 1453 fd_intern (evpipe [0]);
… …
1224 ev_io_start (EV_A_ &pipe_w); 1458 ev_io_start (EV_A_ &pipe_w);
1225 ev_unref (EV_A); /* watcher should not keep loop alive */ 1459 ev_unref (EV_A); /* watcher should not keep loop alive */
1226 } 1460 }
1227} 1461}
1228 1462
1229inline_size void 1463inline_speed void
1230evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1464evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1231{ 1465{
1232 if (!*flag) 1466 if (expect_true (*flag))
1467 return;
1468
1469 *flag = 1;
1470
1471 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1472
1473 pipe_write_skipped = 1;
1474
1475 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1476
1477 if (pipe_write_wanted)
1233 { 1478 {
1479 int old_errno;
1480
1481 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1482
1234 int old_errno = errno; /* save errno because write might clobber it */ 1483 old_errno = errno; /* save errno because write will clobber it */
1235
1236 *flag = 1;
1237 1484
1238#if EV_USE_EVENTFD 1485#if EV_USE_EVENTFD
1239 if (evfd >= 0) 1486 if (evfd >= 0)
1240 { 1487 {
1241 uint64_t counter = 1; 1488 uint64_t counter = 1;
1242 write (evfd, &counter, sizeof (uint64_t)); 1489 write (evfd, &counter, sizeof (uint64_t));
1243 } 1490 }
1244 else 1491 else
1245#endif 1492#endif
1493 {
1494 /* win32 people keep sending patches that change this write() to send() */
1495 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1496 /* so when you think this write should be a send instead, please find out */
1497 /* where your send() is from - it's definitely not the microsoft send, and */
1498 /* tell me. thank you. */
1246 write (evpipe [1], &old_errno, 1); 1499 write (evpipe [1], &(evpipe [1]), 1);
1500 }
1247 1501
1248 errno = old_errno; 1502 errno = old_errno;
1249 } 1503 }
1250} 1504}
1251 1505
… …
1254static void 1508static void
1255pipecb (EV_P_ ev_io *iow, int revents) 1509pipecb (EV_P_ ev_io *iow, int revents)
1256{ 1510{
1257 int i; 1511 int i;
1258 1512
1513 if (revents & EV_READ)
1514 {
1259#if EV_USE_EVENTFD 1515#if EV_USE_EVENTFD
1260 if (evfd >= 0) 1516 if (evfd >= 0)
1261 { 1517 {
1262 uint64_t counter; 1518 uint64_t counter;
1263 read (evfd, &counter, sizeof (uint64_t)); 1519 read (evfd, &counter, sizeof (uint64_t));
1264 } 1520 }
1265 else 1521 else
1266#endif 1522#endif
1267 { 1523 {
1268 char dummy; 1524 char dummy;
1525 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1269 read (evpipe [0], &dummy, 1); 1526 read (evpipe [0], &dummy, 1);
1527 }
1270 } 1528 }
1271 1529
1530 pipe_write_skipped = 0;
1531
1532#if EV_SIGNAL_ENABLE
1272 if (sig_pending) 1533 if (sig_pending)
1273 { 1534 {
1274 sig_pending = 0; 1535 sig_pending = 0;
1275 1536
1276 for (i = EV_NSIG - 1; i--; ) 1537 for (i = EV_NSIG - 1; i--; )
1277 if (expect_false (signals [i].pending)) 1538 if (expect_false (signals [i].pending))
1278 ev_feed_signal_event (EV_A_ i + 1); 1539 ev_feed_signal_event (EV_A_ i + 1);
1279 } 1540 }
1541#endif
1280 1542
1281#if EV_ASYNC_ENABLE 1543#if EV_ASYNC_ENABLE
1282 if (async_pending) 1544 if (async_pending)
1283 { 1545 {
1284 async_pending = 0; 1546 async_pending = 0;
… …
1293#endif 1555#endif
1294} 1556}
1295 1557
1296/*****************************************************************************/ 1558/*****************************************************************************/
1297 1559
1560void
1561ev_feed_signal (int signum)
1562{
1563#if EV_MULTIPLICITY
1564 EV_P = signals [signum - 1].loop;
1565
1566 if (!EV_A)
1567 return;
1568#endif
1569
1570 if (!ev_active (&pipe_w))
1571 return;
1572
1573 signals [signum - 1].pending = 1;
1574 evpipe_write (EV_A_ &sig_pending);
1575}
1576
1298static void 1577static void
1299ev_sighandler (int signum) 1578ev_sighandler (int signum)
1300{ 1579{
1301#if EV_MULTIPLICITY
1302 EV_P = signals [signum - 1].loop;
1303#endif
1304
1305#ifdef _WIN32 1580#ifdef _WIN32
1306 signal (signum, ev_sighandler); 1581 signal (signum, ev_sighandler);
1307#endif 1582#endif
1308 1583
1309 signals [signum - 1].pending = 1; 1584 ev_feed_signal (signum);
1310 evpipe_write (EV_A_ &sig_pending);
1311} 1585}
1312 1586
1313void noinline 1587void noinline
1314ev_feed_signal_event (EV_P_ int signum) 1588ev_feed_signal_event (EV_P_ int signum)
1315{ 1589{
… …
1352 break; 1626 break;
1353 } 1627 }
1354} 1628}
1355#endif 1629#endif
1356 1630
1631#endif
1632
1357/*****************************************************************************/ 1633/*****************************************************************************/
1358 1634
1635#if EV_CHILD_ENABLE
1359static WL childs [EV_PID_HASHSIZE]; 1636static WL childs [EV_PID_HASHSIZE];
1360
1361#ifndef _WIN32
1362 1637
1363static ev_signal childev; 1638static ev_signal childev;
1364 1639
1365#ifndef WIFCONTINUED 1640#ifndef WIFCONTINUED
1366# define WIFCONTINUED(status) 0 1641# define WIFCONTINUED(status) 0
… …
1371child_reap (EV_P_ int chain, int pid, int status) 1646child_reap (EV_P_ int chain, int pid, int status)
1372{ 1647{
1373 ev_child *w; 1648 ev_child *w;
1374 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1649 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1375 1650
1376 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1651 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1377 { 1652 {
1378 if ((w->pid == pid || !w->pid) 1653 if ((w->pid == pid || !w->pid)
1379 && (!traced || (w->flags & 1))) 1654 && (!traced || (w->flags & 1)))
1380 { 1655 {
1381 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1656 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1406 /* make sure we are called again until all children have been reaped */ 1681 /* make sure we are called again until all children have been reaped */
1407 /* we need to do it this way so that the callback gets called before we continue */ 1682 /* we need to do it this way so that the callback gets called before we continue */
1408 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1683 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1409 1684
1410 child_reap (EV_A_ pid, pid, status); 1685 child_reap (EV_A_ pid, pid, status);
1411 if (EV_PID_HASHSIZE > 1) 1686 if ((EV_PID_HASHSIZE) > 1)
1412 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1687 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1413} 1688}
1414 1689
1415#endif 1690#endif
1416 1691
1417/*****************************************************************************/ 1692/*****************************************************************************/
1418 1693
1694#if EV_USE_IOCP
1695# include "ev_iocp.c"
1696#endif
1419#if EV_USE_PORT 1697#if EV_USE_PORT
1420# include "ev_port.c" 1698# include "ev_port.c"
1421#endif 1699#endif
1422#if EV_USE_KQUEUE 1700#if EV_USE_KQUEUE
1423# include "ev_kqueue.c" 1701# include "ev_kqueue.c"
… …
1430#endif 1708#endif
1431#if EV_USE_SELECT 1709#if EV_USE_SELECT
1432# include "ev_select.c" 1710# include "ev_select.c"
1433#endif 1711#endif
1434 1712
1435int 1713int ecb_cold
1436ev_version_major (void) 1714ev_version_major (void)
1437{ 1715{
1438 return EV_VERSION_MAJOR; 1716 return EV_VERSION_MAJOR;
1439} 1717}
1440 1718
1441int 1719int ecb_cold
1442ev_version_minor (void) 1720ev_version_minor (void)
1443{ 1721{
1444 return EV_VERSION_MINOR; 1722 return EV_VERSION_MINOR;
1445} 1723}
1446 1724
1447/* return true if we are running with elevated privileges and should ignore env variables */ 1725/* return true if we are running with elevated privileges and should ignore env variables */
1448int inline_size 1726int inline_size ecb_cold
1449enable_secure (void) 1727enable_secure (void)
1450{ 1728{
1451#ifdef _WIN32 1729#ifdef _WIN32
1452 return 0; 1730 return 0;
1453#else 1731#else
1454 return getuid () != geteuid () 1732 return getuid () != geteuid ()
1455 || getgid () != getegid (); 1733 || getgid () != getegid ();
1456#endif 1734#endif
1457} 1735}
1458 1736
1459unsigned int 1737unsigned int ecb_cold
1460ev_supported_backends (void) 1738ev_supported_backends (void)
1461{ 1739{
1462 unsigned int flags = 0; 1740 unsigned int flags = 0;
1463 1741
1464 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1742 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1468 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1746 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1469 1747
1470 return flags; 1748 return flags;
1471} 1749}
1472 1750
1473unsigned int 1751unsigned int ecb_cold
1474ev_recommended_backends (void) 1752ev_recommended_backends (void)
1475{ 1753{
1476 unsigned int flags = ev_supported_backends (); 1754 unsigned int flags = ev_supported_backends ();
1477 1755
1478#ifndef __NetBSD__ 1756#ifndef __NetBSD__
… …
1483#ifdef __APPLE__ 1761#ifdef __APPLE__
1484 /* only select works correctly on that "unix-certified" platform */ 1762 /* only select works correctly on that "unix-certified" platform */
1485 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1763 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1486 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1764 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1487#endif 1765#endif
1766#ifdef __FreeBSD__
1767 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1768#endif
1488 1769
1489 return flags; 1770 return flags;
1490} 1771}
1491 1772
1492unsigned int 1773unsigned int ecb_cold
1493ev_embeddable_backends (void) 1774ev_embeddable_backends (void)
1494{ 1775{
1495 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1776 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1496 1777
1497 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1778 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1498 /* please fix it and tell me how to detect the fix */ 1779 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1499 flags &= ~EVBACKEND_EPOLL; 1780 flags &= ~EVBACKEND_EPOLL;
1500 1781
1501 return flags; 1782 return flags;
1502} 1783}
1503 1784
1504unsigned int 1785unsigned int
1505ev_backend (EV_P) 1786ev_backend (EV_P)
1506{ 1787{
1507 return backend; 1788 return backend;
1508} 1789}
1509 1790
1510#if EV_MINIMAL < 2 1791#if EV_FEATURE_API
1511unsigned int 1792unsigned int
1512ev_loop_count (EV_P) 1793ev_iteration (EV_P)
1513{ 1794{
1514 return loop_count; 1795 return loop_count;
1515} 1796}
1516 1797
1517unsigned int 1798unsigned int
1518ev_loop_depth (EV_P) 1799ev_depth (EV_P)
1519{ 1800{
1520 return loop_depth; 1801 return loop_depth;
1521} 1802}
1522 1803
1523void 1804void
… …
1542ev_userdata (EV_P) 1823ev_userdata (EV_P)
1543{ 1824{
1544 return userdata; 1825 return userdata;
1545} 1826}
1546 1827
1828void
1547void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1829ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1548{ 1830{
1549 invoke_cb = invoke_pending_cb; 1831 invoke_cb = invoke_pending_cb;
1550} 1832}
1551 1833
1834void
1552void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1835ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1553{ 1836{
1554 release_cb = release; 1837 release_cb = release;
1555 acquire_cb = acquire; 1838 acquire_cb = acquire;
1556} 1839}
1557#endif 1840#endif
1558 1841
1559/* initialise a loop structure, must be zero-initialised */ 1842/* initialise a loop structure, must be zero-initialised */
1560static void noinline 1843static void noinline ecb_cold
1561loop_init (EV_P_ unsigned int flags) 1844loop_init (EV_P_ unsigned int flags)
1562{ 1845{
1563 if (!backend) 1846 if (!backend)
1564 { 1847 {
1848 origflags = flags;
1849
1565#if EV_USE_REALTIME 1850#if EV_USE_REALTIME
1566 if (!have_realtime) 1851 if (!have_realtime)
1567 { 1852 {
1568 struct timespec ts; 1853 struct timespec ts;
1569 1854
… …
1591 if (!(flags & EVFLAG_NOENV) 1876 if (!(flags & EVFLAG_NOENV)
1592 && !enable_secure () 1877 && !enable_secure ()
1593 && getenv ("LIBEV_FLAGS")) 1878 && getenv ("LIBEV_FLAGS"))
1594 flags = atoi (getenv ("LIBEV_FLAGS")); 1879 flags = atoi (getenv ("LIBEV_FLAGS"));
1595 1880
1596 ev_rt_now = ev_time (); 1881 ev_rt_now = ev_time ();
1597 mn_now = get_clock (); 1882 mn_now = get_clock ();
1598 now_floor = mn_now; 1883 now_floor = mn_now;
1599 rtmn_diff = ev_rt_now - mn_now; 1884 rtmn_diff = ev_rt_now - mn_now;
1600#if EV_MINIMAL < 2 1885#if EV_FEATURE_API
1601 invoke_cb = ev_invoke_pending; 1886 invoke_cb = ev_invoke_pending;
1602#endif 1887#endif
1603 1888
1604 io_blocktime = 0.; 1889 io_blocktime = 0.;
1605 timeout_blocktime = 0.; 1890 timeout_blocktime = 0.;
1606 backend = 0; 1891 backend = 0;
1607 backend_fd = -1; 1892 backend_fd = -1;
1608 sig_pending = 0; 1893 sig_pending = 0;
1609#if EV_ASYNC_ENABLE 1894#if EV_ASYNC_ENABLE
1610 async_pending = 0; 1895 async_pending = 0;
1611#endif 1896#endif
1897 pipe_write_skipped = 0;
1898 pipe_write_wanted = 0;
1612#if EV_USE_INOTIFY 1899#if EV_USE_INOTIFY
1613 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1900 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1614#endif 1901#endif
1615#if EV_USE_SIGNALFD 1902#if EV_USE_SIGNALFD
1616 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1903 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1617#endif 1904#endif
1618 1905
1619 if (!(flags & 0x0000ffffU)) 1906 if (!(flags & EVBACKEND_MASK))
1620 flags |= ev_recommended_backends (); 1907 flags |= ev_recommended_backends ();
1621 1908
1909#if EV_USE_IOCP
1910 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1911#endif
1622#if EV_USE_PORT 1912#if EV_USE_PORT
1623 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1913 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1624#endif 1914#endif
1625#if EV_USE_KQUEUE 1915#if EV_USE_KQUEUE
1626 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1916 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1635 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1925 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1636#endif 1926#endif
1637 1927
1638 ev_prepare_init (&pending_w, pendingcb); 1928 ev_prepare_init (&pending_w, pendingcb);
1639 1929
1930#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1640 ev_init (&pipe_w, pipecb); 1931 ev_init (&pipe_w, pipecb);
1641 ev_set_priority (&pipe_w, EV_MAXPRI); 1932 ev_set_priority (&pipe_w, EV_MAXPRI);
1933#endif
1642 } 1934 }
1643} 1935}
1644 1936
1645/* free up a loop structure */ 1937/* free up a loop structure */
1646static void noinline 1938void ecb_cold
1647loop_destroy (EV_P) 1939ev_loop_destroy (EV_P)
1648{ 1940{
1649 int i; 1941 int i;
1942
1943#if EV_MULTIPLICITY
1944 /* mimic free (0) */
1945 if (!EV_A)
1946 return;
1947#endif
1948
1949#if EV_CLEANUP_ENABLE
1950 /* queue cleanup watchers (and execute them) */
1951 if (expect_false (cleanupcnt))
1952 {
1953 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1954 EV_INVOKE_PENDING;
1955 }
1956#endif
1957
1958#if EV_CHILD_ENABLE
1959 if (ev_is_active (&childev))
1960 {
1961 ev_ref (EV_A); /* child watcher */
1962 ev_signal_stop (EV_A_ &childev);
1963 }
1964#endif
1650 1965
1651 if (ev_is_active (&pipe_w)) 1966 if (ev_is_active (&pipe_w))
1652 { 1967 {
1653 /*ev_ref (EV_A);*/ 1968 /*ev_ref (EV_A);*/
1654 /*ev_io_stop (EV_A_ &pipe_w);*/ 1969 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1676#endif 1991#endif
1677 1992
1678 if (backend_fd >= 0) 1993 if (backend_fd >= 0)
1679 close (backend_fd); 1994 close (backend_fd);
1680 1995
1996#if EV_USE_IOCP
1997 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1998#endif
1681#if EV_USE_PORT 1999#if EV_USE_PORT
1682 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2000 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1683#endif 2001#endif
1684#if EV_USE_KQUEUE 2002#if EV_USE_KQUEUE
1685 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2003 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1712 array_free (periodic, EMPTY); 2030 array_free (periodic, EMPTY);
1713#endif 2031#endif
1714#if EV_FORK_ENABLE 2032#if EV_FORK_ENABLE
1715 array_free (fork, EMPTY); 2033 array_free (fork, EMPTY);
1716#endif 2034#endif
2035#if EV_CLEANUP_ENABLE
2036 array_free (cleanup, EMPTY);
2037#endif
1717 array_free (prepare, EMPTY); 2038 array_free (prepare, EMPTY);
1718 array_free (check, EMPTY); 2039 array_free (check, EMPTY);
1719#if EV_ASYNC_ENABLE 2040#if EV_ASYNC_ENABLE
1720 array_free (async, EMPTY); 2041 array_free (async, EMPTY);
1721#endif 2042#endif
1722 2043
1723 backend = 0; 2044 backend = 0;
2045
2046#if EV_MULTIPLICITY
2047 if (ev_is_default_loop (EV_A))
2048#endif
2049 ev_default_loop_ptr = 0;
2050#if EV_MULTIPLICITY
2051 else
2052 ev_free (EV_A);
2053#endif
1724} 2054}
1725 2055
1726#if EV_USE_INOTIFY 2056#if EV_USE_INOTIFY
1727inline_size void infy_fork (EV_P); 2057inline_size void infy_fork (EV_P);
1728#endif 2058#endif
… …
1743 infy_fork (EV_A); 2073 infy_fork (EV_A);
1744#endif 2074#endif
1745 2075
1746 if (ev_is_active (&pipe_w)) 2076 if (ev_is_active (&pipe_w))
1747 { 2077 {
1748 /* this "locks" the handlers against writing to the pipe */ 2078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1749 /* while we modify the fd vars */
1750 sig_pending = 1;
1751#if EV_ASYNC_ENABLE
1752 async_pending = 1;
1753#endif
1754 2079
1755 ev_ref (EV_A); 2080 ev_ref (EV_A);
1756 ev_io_stop (EV_A_ &pipe_w); 2081 ev_io_stop (EV_A_ &pipe_w);
1757 2082
1758#if EV_USE_EVENTFD 2083#if EV_USE_EVENTFD
… …
1764 { 2089 {
1765 EV_WIN32_CLOSE_FD (evpipe [0]); 2090 EV_WIN32_CLOSE_FD (evpipe [0]);
1766 EV_WIN32_CLOSE_FD (evpipe [1]); 2091 EV_WIN32_CLOSE_FD (evpipe [1]);
1767 } 2092 }
1768 2093
2094#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1769 evpipe_init (EV_A); 2095 evpipe_init (EV_A);
1770 /* now iterate over everything, in case we missed something */ 2096 /* now iterate over everything, in case we missed something */
1771 pipecb (EV_A_ &pipe_w, EV_READ); 2097 pipecb (EV_A_ &pipe_w, EV_READ);
2098#endif
1772 } 2099 }
1773 2100
1774 postfork = 0; 2101 postfork = 0;
1775} 2102}
1776 2103
1777#if EV_MULTIPLICITY 2104#if EV_MULTIPLICITY
1778 2105
1779struct ev_loop * 2106struct ev_loop * ecb_cold
1780ev_loop_new (unsigned int flags) 2107ev_loop_new (unsigned int flags)
1781{ 2108{
1782 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2109 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1783 2110
1784 memset (EV_A, 0, sizeof (struct ev_loop)); 2111 memset (EV_A, 0, sizeof (struct ev_loop));
1785 loop_init (EV_A_ flags); 2112 loop_init (EV_A_ flags);
1786 2113
1787 if (ev_backend (EV_A)) 2114 if (ev_backend (EV_A))
1788 return EV_A; 2115 return EV_A;
1789 2116
2117 ev_free (EV_A);
1790 return 0; 2118 return 0;
1791} 2119}
1792 2120
1793void
1794ev_loop_destroy (EV_P)
1795{
1796 loop_destroy (EV_A);
1797 ev_free (loop);
1798}
1799
1800void
1801ev_loop_fork (EV_P)
1802{
1803 postfork = 1; /* must be in line with ev_default_fork */
1804}
1805#endif /* multiplicity */ 2121#endif /* multiplicity */
1806 2122
1807#if EV_VERIFY 2123#if EV_VERIFY
1808static void noinline 2124static void noinline ecb_cold
1809verify_watcher (EV_P_ W w) 2125verify_watcher (EV_P_ W w)
1810{ 2126{
1811 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2127 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1812 2128
1813 if (w->pending) 2129 if (w->pending)
1814 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2130 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1815} 2131}
1816 2132
1817static void noinline 2133static void noinline ecb_cold
1818verify_heap (EV_P_ ANHE *heap, int N) 2134verify_heap (EV_P_ ANHE *heap, int N)
1819{ 2135{
1820 int i; 2136 int i;
1821 2137
1822 for (i = HEAP0; i < N + HEAP0; ++i) 2138 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1827 2143
1828 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2144 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1829 } 2145 }
1830} 2146}
1831 2147
1832static void noinline 2148static void noinline ecb_cold
1833array_verify (EV_P_ W *ws, int cnt) 2149array_verify (EV_P_ W *ws, int cnt)
1834{ 2150{
1835 while (cnt--) 2151 while (cnt--)
1836 { 2152 {
1837 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1838 verify_watcher (EV_A_ ws [cnt]); 2154 verify_watcher (EV_A_ ws [cnt]);
1839 } 2155 }
1840} 2156}
1841#endif 2157#endif
1842 2158
1843#if EV_MINIMAL < 2 2159#if EV_FEATURE_API
1844void 2160void ecb_cold
1845ev_loop_verify (EV_P) 2161ev_verify (EV_P)
1846{ 2162{
1847#if EV_VERIFY 2163#if EV_VERIFY
1848 int i; 2164 int i;
1849 WL w; 2165 WL w;
1850 2166
… …
1884#if EV_FORK_ENABLE 2200#if EV_FORK_ENABLE
1885 assert (forkmax >= forkcnt); 2201 assert (forkmax >= forkcnt);
1886 array_verify (EV_A_ (W *)forks, forkcnt); 2202 array_verify (EV_A_ (W *)forks, forkcnt);
1887#endif 2203#endif
1888 2204
2205#if EV_CLEANUP_ENABLE
2206 assert (cleanupmax >= cleanupcnt);
2207 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2208#endif
2209
1889#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1890 assert (asyncmax >= asynccnt); 2211 assert (asyncmax >= asynccnt);
1891 array_verify (EV_A_ (W *)asyncs, asynccnt); 2212 array_verify (EV_A_ (W *)asyncs, asynccnt);
1892#endif 2213#endif
1893 2214
2215#if EV_PREPARE_ENABLE
1894 assert (preparemax >= preparecnt); 2216 assert (preparemax >= preparecnt);
1895 array_verify (EV_A_ (W *)prepares, preparecnt); 2217 array_verify (EV_A_ (W *)prepares, preparecnt);
2218#endif
1896 2219
2220#if EV_CHECK_ENABLE
1897 assert (checkmax >= checkcnt); 2221 assert (checkmax >= checkcnt);
1898 array_verify (EV_A_ (W *)checks, checkcnt); 2222 array_verify (EV_A_ (W *)checks, checkcnt);
2223#endif
1899 2224
1900# if 0 2225# if 0
2226#if EV_CHILD_ENABLE
1901 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2227 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1902 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2228 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2229#endif
1903# endif 2230# endif
1904#endif 2231#endif
1905} 2232}
1906#endif 2233#endif
1907 2234
1908#if EV_MULTIPLICITY 2235#if EV_MULTIPLICITY
1909struct ev_loop * 2236struct ev_loop * ecb_cold
1910ev_default_loop_init (unsigned int flags)
1911#else 2237#else
1912int 2238int
2239#endif
1913ev_default_loop (unsigned int flags) 2240ev_default_loop (unsigned int flags)
1914#endif
1915{ 2241{
1916 if (!ev_default_loop_ptr) 2242 if (!ev_default_loop_ptr)
1917 { 2243 {
1918#if EV_MULTIPLICITY 2244#if EV_MULTIPLICITY
1919 EV_P = ev_default_loop_ptr = &default_loop_struct; 2245 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1923 2249
1924 loop_init (EV_A_ flags); 2250 loop_init (EV_A_ flags);
1925 2251
1926 if (ev_backend (EV_A)) 2252 if (ev_backend (EV_A))
1927 { 2253 {
1928#ifndef _WIN32 2254#if EV_CHILD_ENABLE
1929 ev_signal_init (&childev, childcb, SIGCHLD); 2255 ev_signal_init (&childev, childcb, SIGCHLD);
1930 ev_set_priority (&childev, EV_MAXPRI); 2256 ev_set_priority (&childev, EV_MAXPRI);
1931 ev_signal_start (EV_A_ &childev); 2257 ev_signal_start (EV_A_ &childev);
1932 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2258 ev_unref (EV_A); /* child watcher should not keep loop alive */
1933#endif 2259#endif
… …
1938 2264
1939 return ev_default_loop_ptr; 2265 return ev_default_loop_ptr;
1940} 2266}
1941 2267
1942void 2268void
1943ev_default_destroy (void) 2269ev_loop_fork (EV_P)
1944{ 2270{
1945#if EV_MULTIPLICITY
1946 EV_P = ev_default_loop_ptr;
1947#endif
1948
1949 ev_default_loop_ptr = 0;
1950
1951#ifndef _WIN32
1952 ev_ref (EV_A); /* child watcher */
1953 ev_signal_stop (EV_A_ &childev);
1954#endif
1955
1956 loop_destroy (EV_A);
1957}
1958
1959void
1960ev_default_fork (void)
1961{
1962#if EV_MULTIPLICITY
1963 EV_P = ev_default_loop_ptr;
1964#endif
1965
1966 postfork = 1; /* must be in line with ev_loop_fork */ 2271 postfork = 1; /* must be in line with ev_default_fork */
1967} 2272}
1968 2273
1969/*****************************************************************************/ 2274/*****************************************************************************/
1970 2275
1971void 2276void
… …
1993 2298
1994 for (pri = NUMPRI; pri--; ) 2299 for (pri = NUMPRI; pri--; )
1995 while (pendingcnt [pri]) 2300 while (pendingcnt [pri])
1996 { 2301 {
1997 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2302 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1998
1999 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2000 /* ^ this is no longer true, as pending_w could be here */
2001 2303
2002 p->w->pending = 0; 2304 p->w->pending = 0;
2003 EV_CB_INVOKE (p->w, p->events); 2305 EV_CB_INVOKE (p->w, p->events);
2004 EV_FREQUENT_CHECK; 2306 EV_FREQUENT_CHECK;
2005 } 2307 }
… …
2062 EV_FREQUENT_CHECK; 2364 EV_FREQUENT_CHECK;
2063 feed_reverse (EV_A_ (W)w); 2365 feed_reverse (EV_A_ (W)w);
2064 } 2366 }
2065 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2367 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2066 2368
2067 feed_reverse_done (EV_A_ EV_TIMEOUT); 2369 feed_reverse_done (EV_A_ EV_TIMER);
2068 } 2370 }
2069} 2371}
2070 2372
2071#if EV_PERIODIC_ENABLE 2373#if EV_PERIODIC_ENABLE
2374
2375static void noinline
2376periodic_recalc (EV_P_ ev_periodic *w)
2377{
2378 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2379 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2380
2381 /* the above almost always errs on the low side */
2382 while (at <= ev_rt_now)
2383 {
2384 ev_tstamp nat = at + w->interval;
2385
2386 /* when resolution fails us, we use ev_rt_now */
2387 if (expect_false (nat == at))
2388 {
2389 at = ev_rt_now;
2390 break;
2391 }
2392
2393 at = nat;
2394 }
2395
2396 ev_at (w) = at;
2397}
2398
2072/* make periodics pending */ 2399/* make periodics pending */
2073inline_size void 2400inline_size void
2074periodics_reify (EV_P) 2401periodics_reify (EV_P)
2075{ 2402{
2076 EV_FREQUENT_CHECK; 2403 EV_FREQUENT_CHECK;
… …
2095 ANHE_at_cache (periodics [HEAP0]); 2422 ANHE_at_cache (periodics [HEAP0]);
2096 downheap (periodics, periodiccnt, HEAP0); 2423 downheap (periodics, periodiccnt, HEAP0);
2097 } 2424 }
2098 else if (w->interval) 2425 else if (w->interval)
2099 { 2426 {
2100 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2427 periodic_recalc (EV_A_ w);
2101 /* if next trigger time is not sufficiently in the future, put it there */
2102 /* this might happen because of floating point inexactness */
2103 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2104 {
2105 ev_at (w) += w->interval;
2106
2107 /* if interval is unreasonably low we might still have a time in the past */
2108 /* so correct this. this will make the periodic very inexact, but the user */
2109 /* has effectively asked to get triggered more often than possible */
2110 if (ev_at (w) < ev_rt_now)
2111 ev_at (w) = ev_rt_now;
2112 }
2113
2114 ANHE_at_cache (periodics [HEAP0]); 2428 ANHE_at_cache (periodics [HEAP0]);
2115 downheap (periodics, periodiccnt, HEAP0); 2429 downheap (periodics, periodiccnt, HEAP0);
2116 } 2430 }
2117 else 2431 else
2118 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2432 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2125 feed_reverse_done (EV_A_ EV_PERIODIC); 2439 feed_reverse_done (EV_A_ EV_PERIODIC);
2126 } 2440 }
2127} 2441}
2128 2442
2129/* simply recalculate all periodics */ 2443/* simply recalculate all periodics */
2130/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2444/* TODO: maybe ensure that at least one event happens when jumping forward? */
2131static void noinline 2445static void noinline ecb_cold
2132periodics_reschedule (EV_P) 2446periodics_reschedule (EV_P)
2133{ 2447{
2134 int i; 2448 int i;
2135 2449
2136 /* adjust periodics after time jump */ 2450 /* adjust periodics after time jump */
… …
2139 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2453 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2140 2454
2141 if (w->reschedule_cb) 2455 if (w->reschedule_cb)
2142 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2456 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2143 else if (w->interval) 2457 else if (w->interval)
2144 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2458 periodic_recalc (EV_A_ w);
2145 2459
2146 ANHE_at_cache (periodics [i]); 2460 ANHE_at_cache (periodics [i]);
2147 } 2461 }
2148 2462
2149 reheap (periodics, periodiccnt); 2463 reheap (periodics, periodiccnt);
2150} 2464}
2151#endif 2465#endif
2152 2466
2153/* adjust all timers by a given offset */ 2467/* adjust all timers by a given offset */
2154static void noinline 2468static void noinline ecb_cold
2155timers_reschedule (EV_P_ ev_tstamp adjust) 2469timers_reschedule (EV_P_ ev_tstamp adjust)
2156{ 2470{
2157 int i; 2471 int i;
2158 2472
2159 for (i = 0; i < timercnt; ++i) 2473 for (i = 0; i < timercnt; ++i)
… …
2196 * doesn't hurt either as we only do this on time-jumps or 2510 * doesn't hurt either as we only do this on time-jumps or
2197 * in the unlikely event of having been preempted here. 2511 * in the unlikely event of having been preempted here.
2198 */ 2512 */
2199 for (i = 4; --i; ) 2513 for (i = 4; --i; )
2200 { 2514 {
2515 ev_tstamp diff;
2201 rtmn_diff = ev_rt_now - mn_now; 2516 rtmn_diff = ev_rt_now - mn_now;
2202 2517
2518 diff = odiff - rtmn_diff;
2519
2203 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2520 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2204 return; /* all is well */ 2521 return; /* all is well */
2205 2522
2206 ev_rt_now = ev_time (); 2523 ev_rt_now = ev_time ();
2207 mn_now = get_clock (); 2524 mn_now = get_clock ();
2208 now_floor = mn_now; 2525 now_floor = mn_now;
… …
2231 mn_now = ev_rt_now; 2548 mn_now = ev_rt_now;
2232 } 2549 }
2233} 2550}
2234 2551
2235void 2552void
2236ev_loop (EV_P_ int flags) 2553ev_run (EV_P_ int flags)
2237{ 2554{
2238#if EV_MINIMAL < 2 2555#if EV_FEATURE_API
2239 ++loop_depth; 2556 ++loop_depth;
2240#endif 2557#endif
2241 2558
2242 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2559 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2243 2560
2244 loop_done = EVUNLOOP_CANCEL; 2561 loop_done = EVBREAK_CANCEL;
2245 2562
2246 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2563 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2247 2564
2248 do 2565 do
2249 { 2566 {
2250#if EV_VERIFY >= 2 2567#if EV_VERIFY >= 2
2251 ev_loop_verify (EV_A); 2568 ev_verify (EV_A);
2252#endif 2569#endif
2253 2570
2254#ifndef _WIN32 2571#ifndef _WIN32
2255 if (expect_false (curpid)) /* penalise the forking check even more */ 2572 if (expect_false (curpid)) /* penalise the forking check even more */
2256 if (expect_false (getpid () != curpid)) 2573 if (expect_false (getpid () != curpid))
… …
2268 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2585 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2269 EV_INVOKE_PENDING; 2586 EV_INVOKE_PENDING;
2270 } 2587 }
2271#endif 2588#endif
2272 2589
2590#if EV_PREPARE_ENABLE
2273 /* queue prepare watchers (and execute them) */ 2591 /* queue prepare watchers (and execute them) */
2274 if (expect_false (preparecnt)) 2592 if (expect_false (preparecnt))
2275 { 2593 {
2276 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2594 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2277 EV_INVOKE_PENDING; 2595 EV_INVOKE_PENDING;
2278 } 2596 }
2597#endif
2279 2598
2280 if (expect_false (loop_done)) 2599 if (expect_false (loop_done))
2281 break; 2600 break;
2282 2601
2283 /* we might have forked, so reify kernel state if necessary */ 2602 /* we might have forked, so reify kernel state if necessary */
… …
2290 /* calculate blocking time */ 2609 /* calculate blocking time */
2291 { 2610 {
2292 ev_tstamp waittime = 0.; 2611 ev_tstamp waittime = 0.;
2293 ev_tstamp sleeptime = 0.; 2612 ev_tstamp sleeptime = 0.;
2294 2613
2614 /* remember old timestamp for io_blocktime calculation */
2615 ev_tstamp prev_mn_now = mn_now;
2616
2617 /* update time to cancel out callback processing overhead */
2618 time_update (EV_A_ 1e100);
2619
2620 /* from now on, we want a pipe-wake-up */
2621 pipe_write_wanted = 1;
2622
2623 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2624
2295 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2625 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2296 { 2626 {
2297 /* remember old timestamp for io_blocktime calculation */
2298 ev_tstamp prev_mn_now = mn_now;
2299
2300 /* update time to cancel out callback processing overhead */
2301 time_update (EV_A_ 1e100);
2302
2303 waittime = MAX_BLOCKTIME; 2627 waittime = MAX_BLOCKTIME;
2304 2628
2305 if (timercnt) 2629 if (timercnt)
2306 { 2630 {
2307 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2631 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2308 if (waittime > to) waittime = to; 2632 if (waittime > to) waittime = to;
2309 } 2633 }
2310 2634
2311#if EV_PERIODIC_ENABLE 2635#if EV_PERIODIC_ENABLE
2312 if (periodiccnt) 2636 if (periodiccnt)
2313 { 2637 {
2314 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2638 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2315 if (waittime > to) waittime = to; 2639 if (waittime > to) waittime = to;
2316 } 2640 }
2317#endif 2641#endif
2318 2642
2319 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2643 /* don't let timeouts decrease the waittime below timeout_blocktime */
2320 if (expect_false (waittime < timeout_blocktime)) 2644 if (expect_false (waittime < timeout_blocktime))
2321 waittime = timeout_blocktime; 2645 waittime = timeout_blocktime;
2646
2647 /* at this point, we NEED to wait, so we have to ensure */
2648 /* to pass a minimum nonzero value to the backend */
2649 if (expect_false (waittime < backend_mintime))
2650 waittime = backend_mintime;
2322 2651
2323 /* extra check because io_blocktime is commonly 0 */ 2652 /* extra check because io_blocktime is commonly 0 */
2324 if (expect_false (io_blocktime)) 2653 if (expect_false (io_blocktime))
2325 { 2654 {
2326 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2655 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2327 2656
2328 if (sleeptime > waittime - backend_fudge) 2657 if (sleeptime > waittime - backend_mintime)
2329 sleeptime = waittime - backend_fudge; 2658 sleeptime = waittime - backend_mintime;
2330 2659
2331 if (expect_true (sleeptime > 0.)) 2660 if (expect_true (sleeptime > 0.))
2332 { 2661 {
2333 ev_sleep (sleeptime); 2662 ev_sleep (sleeptime);
2334 waittime -= sleeptime; 2663 waittime -= sleeptime;
2335 } 2664 }
2336 } 2665 }
2337 } 2666 }
2338 2667
2339#if EV_MINIMAL < 2 2668#if EV_FEATURE_API
2340 ++loop_count; 2669 ++loop_count;
2341#endif 2670#endif
2342 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2671 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2343 backend_poll (EV_A_ waittime); 2672 backend_poll (EV_A_ waittime);
2344 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2673 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2674
2675 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2676
2677 if (pipe_write_skipped)
2678 {
2679 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2680 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2681 }
2682
2345 2683
2346 /* update ev_rt_now, do magic */ 2684 /* update ev_rt_now, do magic */
2347 time_update (EV_A_ waittime + sleeptime); 2685 time_update (EV_A_ waittime + sleeptime);
2348 } 2686 }
2349 2687
… …
2356#if EV_IDLE_ENABLE 2694#if EV_IDLE_ENABLE
2357 /* queue idle watchers unless other events are pending */ 2695 /* queue idle watchers unless other events are pending */
2358 idle_reify (EV_A); 2696 idle_reify (EV_A);
2359#endif 2697#endif
2360 2698
2699#if EV_CHECK_ENABLE
2361 /* queue check watchers, to be executed first */ 2700 /* queue check watchers, to be executed first */
2362 if (expect_false (checkcnt)) 2701 if (expect_false (checkcnt))
2363 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2702 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2703#endif
2364 2704
2365 EV_INVOKE_PENDING; 2705 EV_INVOKE_PENDING;
2366 } 2706 }
2367 while (expect_true ( 2707 while (expect_true (
2368 activecnt 2708 activecnt
2369 && !loop_done 2709 && !loop_done
2370 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2710 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2371 )); 2711 ));
2372 2712
2373 if (loop_done == EVUNLOOP_ONE) 2713 if (loop_done == EVBREAK_ONE)
2374 loop_done = EVUNLOOP_CANCEL; 2714 loop_done = EVBREAK_CANCEL;
2375 2715
2376#if EV_MINIMAL < 2 2716#if EV_FEATURE_API
2377 --loop_depth; 2717 --loop_depth;
2378#endif 2718#endif
2379} 2719}
2380 2720
2381void 2721void
2382ev_unloop (EV_P_ int how) 2722ev_break (EV_P_ int how)
2383{ 2723{
2384 loop_done = how; 2724 loop_done = how;
2385} 2725}
2386 2726
2387void 2727void
… …
2507 2847
2508 if (expect_false (ev_is_active (w))) 2848 if (expect_false (ev_is_active (w)))
2509 return; 2849 return;
2510 2850
2511 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2851 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2512 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2852 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2513 2853
2514 EV_FREQUENT_CHECK; 2854 EV_FREQUENT_CHECK;
2515 2855
2516 ev_start (EV_A_ (W)w, 1); 2856 ev_start (EV_A_ (W)w, 1);
2517 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2857 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2535 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
2536 2876
2537 wlist_del (&anfds[w->fd].head, (WL)w); 2877 wlist_del (&anfds[w->fd].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 2878 ev_stop (EV_A_ (W)w);
2539 2879
2540 fd_change (EV_A_ w->fd, 1); 2880 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2541 2881
2542 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
2543} 2883}
2544 2884
2545void noinline 2885void noinline
… …
2587 timers [active] = timers [timercnt + HEAP0]; 2927 timers [active] = timers [timercnt + HEAP0];
2588 adjustheap (timers, timercnt, active); 2928 adjustheap (timers, timercnt, active);
2589 } 2929 }
2590 } 2930 }
2591 2931
2592 EV_FREQUENT_CHECK;
2593
2594 ev_at (w) -= mn_now; 2932 ev_at (w) -= mn_now;
2595 2933
2596 ev_stop (EV_A_ (W)w); 2934 ev_stop (EV_A_ (W)w);
2935
2936 EV_FREQUENT_CHECK;
2597} 2937}
2598 2938
2599void noinline 2939void noinline
2600ev_timer_again (EV_P_ ev_timer *w) 2940ev_timer_again (EV_P_ ev_timer *w)
2601{ 2941{
… …
2637 if (w->reschedule_cb) 2977 if (w->reschedule_cb)
2638 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2978 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2639 else if (w->interval) 2979 else if (w->interval)
2640 { 2980 {
2641 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2981 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2642 /* this formula differs from the one in periodic_reify because we do not always round up */ 2982 periodic_recalc (EV_A_ w);
2643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2644 } 2983 }
2645 else 2984 else
2646 ev_at (w) = w->offset; 2985 ev_at (w) = w->offset;
2647 2986
2648 EV_FREQUENT_CHECK; 2987 EV_FREQUENT_CHECK;
… …
2680 periodics [active] = periodics [periodiccnt + HEAP0]; 3019 periodics [active] = periodics [periodiccnt + HEAP0];
2681 adjustheap (periodics, periodiccnt, active); 3020 adjustheap (periodics, periodiccnt, active);
2682 } 3021 }
2683 } 3022 }
2684 3023
2685 EV_FREQUENT_CHECK;
2686
2687 ev_stop (EV_A_ (W)w); 3024 ev_stop (EV_A_ (W)w);
3025
3026 EV_FREQUENT_CHECK;
2688} 3027}
2689 3028
2690void noinline 3029void noinline
2691ev_periodic_again (EV_P_ ev_periodic *w) 3030ev_periodic_again (EV_P_ ev_periodic *w)
2692{ 3031{
… …
2697#endif 3036#endif
2698 3037
2699#ifndef SA_RESTART 3038#ifndef SA_RESTART
2700# define SA_RESTART 0 3039# define SA_RESTART 0
2701#endif 3040#endif
3041
3042#if EV_SIGNAL_ENABLE
2702 3043
2703void noinline 3044void noinline
2704ev_signal_start (EV_P_ ev_signal *w) 3045ev_signal_start (EV_P_ ev_signal *w)
2705{ 3046{
2706 if (expect_false (ev_is_active (w))) 3047 if (expect_false (ev_is_active (w)))
… …
2767 sa.sa_handler = ev_sighandler; 3108 sa.sa_handler = ev_sighandler;
2768 sigfillset (&sa.sa_mask); 3109 sigfillset (&sa.sa_mask);
2769 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3110 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2770 sigaction (w->signum, &sa, 0); 3111 sigaction (w->signum, &sa, 0);
2771 3112
3113 if (origflags & EVFLAG_NOSIGMASK)
3114 {
2772 sigemptyset (&sa.sa_mask); 3115 sigemptyset (&sa.sa_mask);
2773 sigaddset (&sa.sa_mask, w->signum); 3116 sigaddset (&sa.sa_mask, w->signum);
2774 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3117 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3118 }
2775#endif 3119#endif
2776 } 3120 }
2777 3121
2778 EV_FREQUENT_CHECK; 3122 EV_FREQUENT_CHECK;
2779} 3123}
… …
2813 } 3157 }
2814 3158
2815 EV_FREQUENT_CHECK; 3159 EV_FREQUENT_CHECK;
2816} 3160}
2817 3161
3162#endif
3163
3164#if EV_CHILD_ENABLE
3165
2818void 3166void
2819ev_child_start (EV_P_ ev_child *w) 3167ev_child_start (EV_P_ ev_child *w)
2820{ 3168{
2821#if EV_MULTIPLICITY 3169#if EV_MULTIPLICITY
2822 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3170 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2825 return; 3173 return;
2826 3174
2827 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2828 3176
2829 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2830 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3178 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2831 3179
2832 EV_FREQUENT_CHECK; 3180 EV_FREQUENT_CHECK;
2833} 3181}
2834 3182
2835void 3183void
… …
2839 if (expect_false (!ev_is_active (w))) 3187 if (expect_false (!ev_is_active (w)))
2840 return; 3188 return;
2841 3189
2842 EV_FREQUENT_CHECK; 3190 EV_FREQUENT_CHECK;
2843 3191
2844 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3192 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2845 ev_stop (EV_A_ (W)w); 3193 ev_stop (EV_A_ (W)w);
2846 3194
2847 EV_FREQUENT_CHECK; 3195 EV_FREQUENT_CHECK;
2848} 3196}
3197
3198#endif
2849 3199
2850#if EV_STAT_ENABLE 3200#if EV_STAT_ENABLE
2851 3201
2852# ifdef _WIN32 3202# ifdef _WIN32
2853# undef lstat 3203# undef lstat
… …
2859#define MIN_STAT_INTERVAL 0.1074891 3209#define MIN_STAT_INTERVAL 0.1074891
2860 3210
2861static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3211static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2862 3212
2863#if EV_USE_INOTIFY 3213#if EV_USE_INOTIFY
2864# define EV_INOTIFY_BUFSIZE 8192 3214
3215/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3216# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2865 3217
2866static void noinline 3218static void noinline
2867infy_add (EV_P_ ev_stat *w) 3219infy_add (EV_P_ ev_stat *w)
2868{ 3220{
2869 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); 3221 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);
… …
2912 if (!pend || pend == path) 3264 if (!pend || pend == path)
2913 break; 3265 break;
2914 3266
2915 *pend = 0; 3267 *pend = 0;
2916 w->wd = inotify_add_watch (fs_fd, path, mask); 3268 w->wd = inotify_add_watch (fs_fd, path, mask);
2917 } 3269 }
2918 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3270 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2919 } 3271 }
2920 } 3272 }
2921 3273
2922 if (w->wd >= 0) 3274 if (w->wd >= 0)
2923 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3275 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2924 3276
2925 /* now re-arm timer, if required */ 3277 /* now re-arm timer, if required */
2926 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3278 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2927 ev_timer_again (EV_A_ &w->timer); 3279 ev_timer_again (EV_A_ &w->timer);
2928 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3280 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2936 3288
2937 if (wd < 0) 3289 if (wd < 0)
2938 return; 3290 return;
2939 3291
2940 w->wd = -2; 3292 w->wd = -2;
2941 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3293 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2942 wlist_del (&fs_hash [slot].head, (WL)w); 3294 wlist_del (&fs_hash [slot].head, (WL)w);
2943 3295
2944 /* remove this watcher, if others are watching it, they will rearm */ 3296 /* remove this watcher, if others are watching it, they will rearm */
2945 inotify_rm_watch (fs_fd, wd); 3297 inotify_rm_watch (fs_fd, wd);
2946} 3298}
… …
2948static void noinline 3300static void noinline
2949infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3301infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2950{ 3302{
2951 if (slot < 0) 3303 if (slot < 0)
2952 /* overflow, need to check for all hash slots */ 3304 /* overflow, need to check for all hash slots */
2953 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3305 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2954 infy_wd (EV_A_ slot, wd, ev); 3306 infy_wd (EV_A_ slot, wd, ev);
2955 else 3307 else
2956 { 3308 {
2957 WL w_; 3309 WL w_;
2958 3310
2959 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3311 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2960 { 3312 {
2961 ev_stat *w = (ev_stat *)w_; 3313 ev_stat *w = (ev_stat *)w_;
2962 w_ = w_->next; /* lets us remove this watcher and all before it */ 3314 w_ = w_->next; /* lets us remove this watcher and all before it */
2963 3315
2964 if (w->wd == wd || wd == -1) 3316 if (w->wd == wd || wd == -1)
2965 { 3317 {
2966 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3318 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2967 { 3319 {
2968 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3320 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2969 w->wd = -1; 3321 w->wd = -1;
2970 infy_add (EV_A_ w); /* re-add, no matter what */ 3322 infy_add (EV_A_ w); /* re-add, no matter what */
2971 } 3323 }
2972 3324
2973 stat_timer_cb (EV_A_ &w->timer, 0); 3325 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2978 3330
2979static void 3331static void
2980infy_cb (EV_P_ ev_io *w, int revents) 3332infy_cb (EV_P_ ev_io *w, int revents)
2981{ 3333{
2982 char buf [EV_INOTIFY_BUFSIZE]; 3334 char buf [EV_INOTIFY_BUFSIZE];
2983 struct inotify_event *ev = (struct inotify_event *)buf;
2984 int ofs; 3335 int ofs;
2985 int len = read (fs_fd, buf, sizeof (buf)); 3336 int len = read (fs_fd, buf, sizeof (buf));
2986 3337
2987 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3338 for (ofs = 0; ofs < len; )
3339 {
3340 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2988 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3341 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3342 ofs += sizeof (struct inotify_event) + ev->len;
3343 }
2989} 3344}
2990 3345
2991inline_size void 3346inline_size void ecb_cold
2992check_2625 (EV_P) 3347ev_check_2625 (EV_P)
2993{ 3348{
2994 /* kernels < 2.6.25 are borked 3349 /* kernels < 2.6.25 are borked
2995 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3350 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2996 */ 3351 */
2997 struct utsname buf; 3352 if (ev_linux_version () < 0x020619)
2998 int major, minor, micro;
2999
3000 if (uname (&buf))
3001 return;
3002
3003 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3004 return;
3005
3006 if (major < 2
3007 || (major == 2 && minor < 6)
3008 || (major == 2 && minor == 6 && micro < 25))
3009 return; 3353 return;
3010 3354
3011 fs_2625 = 1; 3355 fs_2625 = 1;
3012} 3356}
3013 3357
… …
3028 if (fs_fd != -2) 3372 if (fs_fd != -2)
3029 return; 3373 return;
3030 3374
3031 fs_fd = -1; 3375 fs_fd = -1;
3032 3376
3033 check_2625 (EV_A); 3377 ev_check_2625 (EV_A);
3034 3378
3035 fs_fd = infy_newfd (); 3379 fs_fd = infy_newfd ();
3036 3380
3037 if (fs_fd >= 0) 3381 if (fs_fd >= 0)
3038 { 3382 {
… …
3063 ev_io_set (&fs_w, fs_fd, EV_READ); 3407 ev_io_set (&fs_w, fs_fd, EV_READ);
3064 ev_io_start (EV_A_ &fs_w); 3408 ev_io_start (EV_A_ &fs_w);
3065 ev_unref (EV_A); 3409 ev_unref (EV_A);
3066 } 3410 }
3067 3411
3068 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3069 { 3413 {
3070 WL w_ = fs_hash [slot].head; 3414 WL w_ = fs_hash [slot].head;
3071 fs_hash [slot].head = 0; 3415 fs_hash [slot].head = 0;
3072 3416
3073 while (w_) 3417 while (w_)
… …
3248 3592
3249 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
3250} 3594}
3251#endif 3595#endif
3252 3596
3597#if EV_PREPARE_ENABLE
3253void 3598void
3254ev_prepare_start (EV_P_ ev_prepare *w) 3599ev_prepare_start (EV_P_ ev_prepare *w)
3255{ 3600{
3256 if (expect_false (ev_is_active (w))) 3601 if (expect_false (ev_is_active (w)))
3257 return; 3602 return;
… …
3283 3628
3284 ev_stop (EV_A_ (W)w); 3629 ev_stop (EV_A_ (W)w);
3285 3630
3286 EV_FREQUENT_CHECK; 3631 EV_FREQUENT_CHECK;
3287} 3632}
3633#endif
3288 3634
3635#if EV_CHECK_ENABLE
3289void 3636void
3290ev_check_start (EV_P_ ev_check *w) 3637ev_check_start (EV_P_ ev_check *w)
3291{ 3638{
3292 if (expect_false (ev_is_active (w))) 3639 if (expect_false (ev_is_active (w)))
3293 return; 3640 return;
… …
3319 3666
3320 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
3321 3668
3322 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
3323} 3670}
3671#endif
3324 3672
3325#if EV_EMBED_ENABLE 3673#if EV_EMBED_ENABLE
3326void noinline 3674void noinline
3327ev_embed_sweep (EV_P_ ev_embed *w) 3675ev_embed_sweep (EV_P_ ev_embed *w)
3328{ 3676{
3329 ev_loop (w->other, EVLOOP_NONBLOCK); 3677 ev_run (w->other, EVRUN_NOWAIT);
3330} 3678}
3331 3679
3332static void 3680static void
3333embed_io_cb (EV_P_ ev_io *io, int revents) 3681embed_io_cb (EV_P_ ev_io *io, int revents)
3334{ 3682{
3335 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3683 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3336 3684
3337 if (ev_cb (w)) 3685 if (ev_cb (w))
3338 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3686 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3339 else 3687 else
3340 ev_loop (w->other, EVLOOP_NONBLOCK); 3688 ev_run (w->other, EVRUN_NOWAIT);
3341} 3689}
3342 3690
3343static void 3691static void
3344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3692embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3345{ 3693{
… …
3349 EV_P = w->other; 3697 EV_P = w->other;
3350 3698
3351 while (fdchangecnt) 3699 while (fdchangecnt)
3352 { 3700 {
3353 fd_reify (EV_A); 3701 fd_reify (EV_A);
3354 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3702 ev_run (EV_A_ EVRUN_NOWAIT);
3355 } 3703 }
3356 } 3704 }
3357} 3705}
3358 3706
3359static void 3707static void
… …
3365 3713
3366 { 3714 {
3367 EV_P = w->other; 3715 EV_P = w->other;
3368 3716
3369 ev_loop_fork (EV_A); 3717 ev_loop_fork (EV_A);
3370 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3718 ev_run (EV_A_ EVRUN_NOWAIT);
3371 } 3719 }
3372 3720
3373 ev_embed_start (EV_A_ w); 3721 ev_embed_start (EV_A_ w);
3374} 3722}
3375 3723
… …
3423 3771
3424 ev_io_stop (EV_A_ &w->io); 3772 ev_io_stop (EV_A_ &w->io);
3425 ev_prepare_stop (EV_A_ &w->prepare); 3773 ev_prepare_stop (EV_A_ &w->prepare);
3426 ev_fork_stop (EV_A_ &w->fork); 3774 ev_fork_stop (EV_A_ &w->fork);
3427 3775
3776 ev_stop (EV_A_ (W)w);
3777
3428 EV_FREQUENT_CHECK; 3778 EV_FREQUENT_CHECK;
3429} 3779}
3430#endif 3780#endif
3431 3781
3432#if EV_FORK_ENABLE 3782#if EV_FORK_ENABLE
… …
3465 3815
3466 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
3467} 3817}
3468#endif 3818#endif
3469 3819
3820#if EV_CLEANUP_ENABLE
3821void
3822ev_cleanup_start (EV_P_ ev_cleanup *w)
3823{
3824 if (expect_false (ev_is_active (w)))
3825 return;
3826
3827 EV_FREQUENT_CHECK;
3828
3829 ev_start (EV_A_ (W)w, ++cleanupcnt);
3830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3831 cleanups [cleanupcnt - 1] = w;
3832
3833 /* cleanup watchers should never keep a refcount on the loop */
3834 ev_unref (EV_A);
3835 EV_FREQUENT_CHECK;
3836}
3837
3838void
3839ev_cleanup_stop (EV_P_ ev_cleanup *w)
3840{
3841 clear_pending (EV_A_ (W)w);
3842 if (expect_false (!ev_is_active (w)))
3843 return;
3844
3845 EV_FREQUENT_CHECK;
3846 ev_ref (EV_A);
3847
3848 {
3849 int active = ev_active (w);
3850
3851 cleanups [active - 1] = cleanups [--cleanupcnt];
3852 ev_active (cleanups [active - 1]) = active;
3853 }
3854
3855 ev_stop (EV_A_ (W)w);
3856
3857 EV_FREQUENT_CHECK;
3858}
3859#endif
3860
3470#if EV_ASYNC_ENABLE 3861#if EV_ASYNC_ENABLE
3471void 3862void
3472ev_async_start (EV_P_ ev_async *w) 3863ev_async_start (EV_P_ ev_async *w)
3473{ 3864{
3474 if (expect_false (ev_is_active (w))) 3865 if (expect_false (ev_is_active (w)))
3475 return; 3866 return;
3867
3868 w->sent = 0;
3476 3869
3477 evpipe_init (EV_A); 3870 evpipe_init (EV_A);
3478 3871
3479 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
3480 3873
… …
3558{ 3951{
3559 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3952 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3560 3953
3561 if (expect_false (!once)) 3954 if (expect_false (!once))
3562 { 3955 {
3563 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3956 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3564 return; 3957 return;
3565 } 3958 }
3566 3959
3567 once->cb = cb; 3960 once->cb = cb;
3568 once->arg = arg; 3961 once->arg = arg;
… …
3583} 3976}
3584 3977
3585/*****************************************************************************/ 3978/*****************************************************************************/
3586 3979
3587#if EV_WALK_ENABLE 3980#if EV_WALK_ENABLE
3588void 3981void ecb_cold
3589ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3982ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3590{ 3983{
3591 int i, j; 3984 int i, j;
3592 ev_watcher_list *wl, *wn; 3985 ev_watcher_list *wl, *wn;
3593 3986
… …
3655 if (types & EV_ASYNC) 4048 if (types & EV_ASYNC)
3656 for (i = asynccnt; i--; ) 4049 for (i = asynccnt; i--; )
3657 cb (EV_A_ EV_ASYNC, asyncs [i]); 4050 cb (EV_A_ EV_ASYNC, asyncs [i]);
3658#endif 4051#endif
3659 4052
4053#if EV_PREPARE_ENABLE
3660 if (types & EV_PREPARE) 4054 if (types & EV_PREPARE)
3661 for (i = preparecnt; i--; ) 4055 for (i = preparecnt; i--; )
3662#if EV_EMBED_ENABLE 4056# if EV_EMBED_ENABLE
3663 if (ev_cb (prepares [i]) != embed_prepare_cb) 4057 if (ev_cb (prepares [i]) != embed_prepare_cb)
3664#endif 4058# endif
3665 cb (EV_A_ EV_PREPARE, prepares [i]); 4059 cb (EV_A_ EV_PREPARE, prepares [i]);
4060#endif
3666 4061
4062#if EV_CHECK_ENABLE
3667 if (types & EV_CHECK) 4063 if (types & EV_CHECK)
3668 for (i = checkcnt; i--; ) 4064 for (i = checkcnt; i--; )
3669 cb (EV_A_ EV_CHECK, checks [i]); 4065 cb (EV_A_ EV_CHECK, checks [i]);
4066#endif
3670 4067
4068#if EV_SIGNAL_ENABLE
3671 if (types & EV_SIGNAL) 4069 if (types & EV_SIGNAL)
3672 for (i = 0; i < EV_NSIG - 1; ++i) 4070 for (i = 0; i < EV_NSIG - 1; ++i)
3673 for (wl = signals [i].head; wl; ) 4071 for (wl = signals [i].head; wl; )
3674 { 4072 {
3675 wn = wl->next; 4073 wn = wl->next;
3676 cb (EV_A_ EV_SIGNAL, wl); 4074 cb (EV_A_ EV_SIGNAL, wl);
3677 wl = wn; 4075 wl = wn;
3678 } 4076 }
4077#endif
3679 4078
4079#if EV_CHILD_ENABLE
3680 if (types & EV_CHILD) 4080 if (types & EV_CHILD)
3681 for (i = EV_PID_HASHSIZE; i--; ) 4081 for (i = (EV_PID_HASHSIZE); i--; )
3682 for (wl = childs [i]; wl; ) 4082 for (wl = childs [i]; wl; )
3683 { 4083 {
3684 wn = wl->next; 4084 wn = wl->next;
3685 cb (EV_A_ EV_CHILD, wl); 4085 cb (EV_A_ EV_CHILD, wl);
3686 wl = wn; 4086 wl = wn;
3687 } 4087 }
4088#endif
3688/* EV_STAT 0x00001000 /* stat data changed */ 4089/* EV_STAT 0x00001000 /* stat data changed */
3689/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4090/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3690} 4091}
3691#endif 4092#endif
3692 4093
3693#if EV_MULTIPLICITY 4094#if EV_MULTIPLICITY
3694 #include "ev_wrap.h" 4095 #include "ev_wrap.h"
3695#endif 4096#endif
3696 4097
3697#ifdef __cplusplus 4098EV_CPP(})
3698}
3699#endif
3700 4099

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