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Comparing libev/ev.c (file contents):
Revision 1.289 by root, Sat Jun 6 11:13:16 2009 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 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 *
… …
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
… …
57# endif 53# endif
58# ifndef EV_USE_MONOTONIC 54# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 55# define EV_USE_MONOTONIC 1
60# endif 56# endif
61# endif 57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
62# endif 60# endif
63 61
64# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
77# endif 75# endif
78# endif 76# endif
79 77
78# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
83# else 82# else
83# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
86# endif 94# endif
87 95
96# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 99# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 100# else
101# undef EV_USE_POLL
100# define EV_USE_POLL 0 102# define EV_USE_POLL 0
101# endif
102# endif 103# endif
103 104
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
107# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
110# endif 112# endif
111 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
118# endif 121# endif
119 122
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
123# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
126# endif 130# endif
127 131
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
134# endif 139# endif
135 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
142# endif 157# endif
143 158
144#endif 159#endif
145 160
146#include <math.h> 161#include <math.h>
147#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
148#include <fcntl.h> 164#include <fcntl.h>
149#include <stddef.h> 165#include <stddef.h>
150 166
151#include <stdio.h> 167#include <stdio.h>
152 168
153#include <assert.h> 169#include <assert.h>
154#include <errno.h> 170#include <errno.h>
155#include <sys/types.h> 171#include <sys/types.h>
156#include <time.h> 172#include <time.h>
173#include <limits.h>
157 174
158#include <signal.h> 175#include <signal.h>
159 176
160#ifdef EV_H 177#ifdef EV_H
161# include EV_H 178# include EV_H
162#else 179#else
163# include "ev.h" 180# include "ev.h"
164#endif 181#endif
182
183EV_CPP(extern "C" {)
165 184
166#ifndef _WIN32 185#ifndef _WIN32
167# include <sys/time.h> 186# include <sys/time.h>
168# include <sys/wait.h> 187# include <sys/wait.h>
169# include <unistd.h> 188# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 192# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
176# endif 195# endif
196# undef EV_AVOID_STDIO
177#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
178 206
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
180 236
181#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 240# else
185# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
186# endif 242# endif
187#endif 243#endif
188 244
189#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 248# else
193# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
194# endif 250# endif
195#endif 251#endif
196 252
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 255#endif
200 256
201#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 260# else
205# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
206# endif 262# endif
207#endif 263#endif
208 264
209#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 267#endif
212 268
213#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
214# ifdef _WIN32 270# ifdef _WIN32
215# define EV_USE_POLL 0 271# define EV_USE_POLL 0
216# else 272# else
217# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 274# endif
219#endif 275#endif
220 276
221#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 280# else
225# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
226# endif 282# endif
227#endif 283#endif
228 284
… …
234# define EV_USE_PORT 0 290# define EV_USE_PORT 0
235#endif 291#endif
236 292
237#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 296# else
241# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
242# endif 298# endif
243#endif 299#endif
244 300
245#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 303#endif
252 304
253#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 307#endif
260 308
261#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 312# else
265# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
266# endif 322# endif
267#endif 323#endif
268 324
269#if 0 /* debugging */ 325#if 0 /* debugging */
270# define EV_VERIFY 3 326# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
273#endif 329#endif
274 330
275#ifndef EV_VERIFY 331#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 333#endif
278 334
279#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 337#endif
282 338
283#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
285#endif 355#endif
286 356
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
288 364
289#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
292#endif 368#endif
… …
300# undef EV_USE_INOTIFY 376# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 377# define EV_USE_INOTIFY 0
302#endif 378#endif
303 379
304#if !EV_USE_NANOSLEEP 380#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 381/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 383# include <sys/select.h>
307# endif 384# endif
308#endif 385#endif
309 386
310#if EV_USE_INOTIFY 387#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 388# include <sys/statfs.h>
313# include <sys/inotify.h> 389# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 391# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 392# undef EV_USE_INOTIFY
… …
320 396
321#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 398# include <winsock.h>
323#endif 399#endif
324 400
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 403# include <stdint.h>
337# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
338extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
339# endif 406# endif
340int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 408# ifdef O_CLOEXEC
342} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
343# endif 413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
344#endif 437#endif
345 438
346/**/ 439/**/
347 440
348#if EV_VERIFY >= 3 441#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 442# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 443#else
351# define EV_FREQUENT_CHECK do { } while (0) 444# define EV_FREQUENT_CHECK do { } while (0)
352#endif 445#endif
353 446
354/* 447/*
… …
361 */ 454 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363 456
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
367 462
368#if __GNUC__ >= 4 463#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
371#else 466#else
… …
378 473
379#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 476#define inline_size static inline
382 477
383#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
384# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
385#else 488#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
391 491
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
394 494
395typedef ev_watcher *W; 495typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 499#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 500#define ev_at(w) ((WT)(w))->at
401 501
402#if EV_USE_REALTIME 502#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 504/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 506#endif
407 507
408#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 510#endif
411 511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
520#endif
521
412#ifdef _WIN32 522#ifdef _WIN32
413# include "ev_win32.c" 523# include "ev_win32.c"
414#endif 524#endif
415 525
416/*****************************************************************************/ 526/*****************************************************************************/
527
528#ifdef __linux
529# include <sys/utsname.h>
530#endif
531
532static unsigned int noinline
533ev_linux_version (void)
534{
535#ifdef __linux
536 unsigned int v = 0;
537 struct utsname buf;
538 int i;
539 char *p = buf.release;
540
541 if (uname (&buf))
542 return 0;
543
544 for (i = 3+1; --i; )
545 {
546 unsigned int c = 0;
547
548 for (;;)
549 {
550 if (*p >= '0' && *p <= '9')
551 c = c * 10 + *p++ - '0';
552 else
553 {
554 p += *p == '.';
555 break;
556 }
557 }
558
559 v = (v << 8) | c;
560 }
561
562 return v;
563#else
564 return 0;
565#endif
566}
567
568/*****************************************************************************/
569
570#if EV_AVOID_STDIO
571static void noinline
572ev_printerr (const char *msg)
573{
574 write (STDERR_FILENO, msg, strlen (msg));
575}
576#endif
417 577
418static void (*syserr_cb)(const char *msg); 578static void (*syserr_cb)(const char *msg);
419 579
420void 580void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 581ev_set_syserr_cb (void (*cb)(const char *msg))
… …
431 591
432 if (syserr_cb) 592 if (syserr_cb)
433 syserr_cb (msg); 593 syserr_cb (msg);
434 else 594 else
435 { 595 {
596#if EV_AVOID_STDIO
597 ev_printerr (msg);
598 ev_printerr (": ");
599 ev_printerr (strerror (errno));
600 ev_printerr ("\n");
601#else
436 perror (msg); 602 perror (msg);
603#endif
437 abort (); 604 abort ();
438 } 605 }
439} 606}
440 607
441static void * 608static void *
442ev_realloc_emul (void *ptr, long size) 609ev_realloc_emul (void *ptr, long size)
443{ 610{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
444 /* some systems, notably openbsd and darwin, fail to properly 614 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 615 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 616 * the single unix specification, so work around them here.
447 */ 617 */
448 618
449 if (size) 619 if (size)
450 return realloc (ptr, size); 620 return realloc (ptr, size);
451 621
452 free (ptr); 622 free (ptr);
453 return 0; 623 return 0;
624#endif
454} 625}
455 626
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 628
458void 629void
… …
466{ 637{
467 ptr = alloc (ptr, size); 638 ptr = alloc (ptr, size);
468 639
469 if (!ptr && size) 640 if (!ptr && size)
470 { 641 {
642#if EV_AVOID_STDIO
643 ev_printerr ("(libev) memory allocation failed, aborting.\n");
644#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 645 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
646#endif
472 abort (); 647 abort ();
473 } 648 }
474 649
475 return ptr; 650 return ptr;
476} 651}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 653#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 654#define ev_free(ptr) ev_realloc ((ptr), 0)
480 655
481/*****************************************************************************/ 656/*****************************************************************************/
482 657
658/* set in reify when reification needed */
659#define EV_ANFD_REIFY 1
660
483/* file descriptor info structure */ 661/* file descriptor info structure */
484typedef struct 662typedef struct
485{ 663{
486 WL head; 664 WL head;
487 unsigned char events; /* the events watched for */ 665 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 668 unsigned char unused;
491#if EV_USE_EPOLL 669#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 670 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 671#endif
494#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 673 SOCKET handle;
674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
496#endif 677#endif
497} ANFD; 678} ANFD;
498 679
499/* stores the pending event set for a given watcher */ 680/* stores the pending event set for a given watcher */
500typedef struct 681typedef struct
… …
555 736
556 static int ev_default_loop_ptr; 737 static int ev_default_loop_ptr;
557 738
558#endif 739#endif
559 740
741#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else
746# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
749#endif
750
751#define EVBREAK_RECURSE 0x80
752
560/*****************************************************************************/ 753/*****************************************************************************/
561 754
755#ifndef EV_HAVE_EV_TIME
562ev_tstamp 756ev_tstamp
563ev_time (void) 757ev_time (void)
564{ 758{
565#if EV_USE_REALTIME 759#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 760 if (expect_true (have_realtime))
… …
573 767
574 struct timeval tv; 768 struct timeval tv;
575 gettimeofday (&tv, 0); 769 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 770 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 771}
772#endif
578 773
579inline_size ev_tstamp 774inline_size ev_tstamp
580get_clock (void) 775get_clock (void)
581{ 776{
582#if EV_USE_MONOTONIC 777#if EV_USE_MONOTONIC
… …
605 if (delay > 0.) 800 if (delay > 0.)
606 { 801 {
607#if EV_USE_NANOSLEEP 802#if EV_USE_NANOSLEEP
608 struct timespec ts; 803 struct timespec ts;
609 804
610 ts.tv_sec = (time_t)delay; 805 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 806 nanosleep (&ts, 0);
614#elif defined(_WIN32) 807#elif defined(_WIN32)
615 Sleep ((unsigned long)(delay * 1e3)); 808 Sleep ((unsigned long)(delay * 1e3));
616#else 809#else
617 struct timeval tv; 810 struct timeval tv;
618 811
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 813 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 814 /* by older ones */
815 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 816 select (0, 0, 0, 0, &tv);
626#endif 817#endif
627 } 818 }
628} 819}
629 820
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
630/*****************************************************************************/ 829/*****************************************************************************/
631 830
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 832
634/* find a suitable new size for the given array, */ 833/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 834/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 835inline_size int
637array_nextsize (int elem, int cur, int cnt) 836array_nextsize (int elem, int cur, int cnt)
638{ 837{
639 int ncur = cur + 1; 838 int ncur = cur + 1;
640 839
… …
736} 935}
737 936
738/*****************************************************************************/ 937/*****************************************************************************/
739 938
740inline_speed void 939inline_speed void
741fd_event (EV_P_ int fd, int revents) 940fd_event_nocheck (EV_P_ int fd, int revents)
742{ 941{
743 ANFD *anfd = anfds + fd; 942 ANFD *anfd = anfds + fd;
744 ev_io *w; 943 ev_io *w;
745 944
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 945 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 949 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 950 ev_feed_event (EV_A_ (W)w, ev);
752 } 951 }
753} 952}
754 953
954/* do not submit kernel events for fds that have reify set */
955/* because that means they changed while we were polling for new events */
956inline_speed void
957fd_event (EV_P_ int fd, int revents)
958{
959 ANFD *anfd = anfds + fd;
960
961 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents);
963}
964
755void 965void
756ev_feed_fd_event (EV_P_ int fd, int revents) 966ev_feed_fd_event (EV_P_ int fd, int revents)
757{ 967{
758 if (fd >= 0 && fd < anfdmax) 968 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 969 fd_event_nocheck (EV_A_ fd, revents);
760} 970}
761 971
762/* make sure the external fd watch events are in-sync */ 972/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 973/* with the kernel/libev internal state */
764inline_size void 974inline_size void
765fd_reify (EV_P) 975fd_reify (EV_P)
766{ 976{
767 int i; 977 int i;
768 978
979#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
980 for (i = 0; i < fdchangecnt; ++i)
981 {
982 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd;
984
985 if (anfd->reify & EV__IOFDSET)
986 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988
989 if (handle != anfd->handle)
990 {
991 unsigned long arg;
992
993 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
994
995 /* handle changed, but fd didn't - we need to do it in two steps */
996 backend_modify (EV_A_ fd, anfd->events, 0);
997 anfd->events = 0;
998 anfd->handle = handle;
999 }
1000 }
1001 }
1002#endif
1003
769 for (i = 0; i < fdchangecnt; ++i) 1004 for (i = 0; i < fdchangecnt; ++i)
770 { 1005 {
771 int fd = fdchanges [i]; 1006 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1007 ANFD *anfd = anfds + fd;
773 ev_io *w; 1008 ev_io *w;
774 1009
775 unsigned char events = 0; 1010 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify;
776 1012
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1013 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1014
780#if EV_SELECT_IS_WINSOCKET 1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1016 {
783 unsigned long arg; 1017 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1018
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1020 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1021
788 #endif 1022 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1023 o_reify = EV__IOFDSET; /* actually |= */
790 } 1024 }
791#endif
792 1025
793 { 1026 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 1027 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1028 }
804 1029
805 fdchangecnt = 0; 1030 fdchangecnt = 0;
806} 1031}
807 1032
… …
831 ev_io_stop (EV_A_ w); 1056 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1058 }
834} 1059}
835 1060
836/* check whether the given fd is atcually valid, for error recovery */ 1061/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1062inline_size int
838fd_valid (int fd) 1063fd_valid (int fd)
839{ 1064{
840#ifdef _WIN32 1065#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1067#else
843 return fcntl (fd, F_GETFD) != -1; 1068 return fcntl (fd, F_GETFD) != -1;
844#endif 1069#endif
845} 1070}
846 1071
… …
864 1089
865 for (fd = anfdmax; fd--; ) 1090 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1091 if (anfds [fd].events)
867 { 1092 {
868 fd_kill (EV_A_ fd); 1093 fd_kill (EV_A_ fd);
869 return; 1094 break;
870 } 1095 }
871} 1096}
872 1097
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1098/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1099static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1104 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1105 if (anfds [fd].events)
881 { 1106 {
882 anfds [fd].events = 0; 1107 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1108 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1109 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1110 }
886} 1111}
887 1112
1113/* used to prepare libev internal fd's */
1114/* this is not fork-safe */
1115inline_speed void
1116fd_intern (int fd)
1117{
1118#ifdef _WIN32
1119 unsigned long arg = 1;
1120 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1121#else
1122 fcntl (fd, F_SETFD, FD_CLOEXEC);
1123 fcntl (fd, F_SETFL, O_NONBLOCK);
1124#endif
1125}
1126
888/*****************************************************************************/ 1127/*****************************************************************************/
889 1128
890/* 1129/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1130 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1131 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1132 * the branching factor of the d-tree.
894 */ 1133 */
895 1134
896/* 1135/*
… …
964 1203
965 for (;;) 1204 for (;;)
966 { 1205 {
967 int c = k << 1; 1206 int c = k << 1;
968 1207
969 if (c > N + HEAP0 - 1) 1208 if (c >= N + HEAP0)
970 break; 1209 break;
971 1210
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1211 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 1212 ? 1 : 0;
974 1213
… …
1010 1249
1011/* move an element suitably so it is in a correct place */ 1250/* move an element suitably so it is in a correct place */
1012inline_size void 1251inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1252adjustheap (ANHE *heap, int N, int k)
1014{ 1253{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1254 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 1255 upheap (heap, k);
1017 else 1256 else
1018 downheap (heap, N, k); 1257 downheap (heap, N, k);
1019} 1258}
1020 1259
… …
1033/*****************************************************************************/ 1272/*****************************************************************************/
1034 1273
1035/* associate signal watchers to a signal signal */ 1274/* associate signal watchers to a signal signal */
1036typedef struct 1275typedef struct
1037{ 1276{
1277 EV_ATOMIC_T pending;
1278#if EV_MULTIPLICITY
1279 EV_P;
1280#endif
1038 WL head; 1281 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1282} ANSIG;
1041 1283
1042static ANSIG *signals; 1284static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1285
1047/*****************************************************************************/ 1286/*****************************************************************************/
1048 1287
1049/* used to prepare libev internal fd's */ 1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */
1051inline_speed void
1052fd_intern (int fd)
1053{
1054#ifdef _WIN32
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 1289
1063static void noinline 1290static void noinline
1064evpipe_init (EV_P) 1291evpipe_init (EV_P)
1065{ 1292{
1066 if (!ev_is_active (&pipe_w)) 1293 if (!ev_is_active (&pipe_w))
1067 { 1294 {
1068#if EV_USE_EVENTFD 1295# if EV_USE_EVENTFD
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1298 evfd = eventfd (0, 0);
1299
1300 if (evfd >= 0)
1070 { 1301 {
1071 evpipe [0] = -1; 1302 evpipe [0] = -1;
1072 fd_intern (evfd); 1303 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1304 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1305 }
1075 else 1306 else
1076#endif 1307# endif
1077 { 1308 {
1078 while (pipe (evpipe)) 1309 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1310 ev_syserr ("(libev) error creating signal/async pipe");
1080 1311
1081 fd_intern (evpipe [0]); 1312 fd_intern (evpipe [0]);
… …
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1324{
1094 if (!*flag) 1325 if (!*flag)
1095 { 1326 {
1096 int old_errno = errno; /* save errno because write might clobber it */ 1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1097 1329
1098 *flag = 1; 1330 *flag = 1;
1099 1331
1100#if EV_USE_EVENTFD 1332#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1333 if (evfd >= 0)
… …
1103 uint64_t counter = 1; 1335 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1336 write (evfd, &counter, sizeof (uint64_t));
1105 } 1337 }
1106 else 1338 else
1107#endif 1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1108 write (evpipe [1], &old_errno, 1); 1345 write (evpipe [1], &dummy, 1);
1109 1346
1110 errno = old_errno; 1347 errno = old_errno;
1111 } 1348 }
1112} 1349}
1113 1350
1114/* called whenever the libev signal pipe */ 1351/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1352/* got some events (signal, async) */
1116static void 1353static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1354pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1355{
1356 int i;
1357
1119#if EV_USE_EVENTFD 1358#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1359 if (evfd >= 0)
1121 { 1360 {
1122 uint64_t counter; 1361 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1362 read (evfd, &counter, sizeof (uint64_t));
1124 } 1363 }
1125 else 1364 else
1126#endif 1365#endif
1127 { 1366 {
1128 char dummy; 1367 char dummy;
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1129 read (evpipe [0], &dummy, 1); 1369 read (evpipe [0], &dummy, 1);
1130 } 1370 }
1131 1371
1132 if (gotsig && ev_is_default_loop (EV_A)) 1372#if EV_SIGNAL_ENABLE
1373 if (sig_pending)
1133 { 1374 {
1134 int signum; 1375 sig_pending = 0;
1135 gotsig = 0;
1136 1376
1137 for (signum = signalmax; signum--; ) 1377 for (i = EV_NSIG - 1; i--; )
1138 if (signals [signum].gotsig) 1378 if (expect_false (signals [i].pending))
1139 ev_feed_signal_event (EV_A_ signum + 1); 1379 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1380 }
1381#endif
1141 1382
1142#if EV_ASYNC_ENABLE 1383#if EV_ASYNC_ENABLE
1143 if (gotasync) 1384 if (async_pending)
1144 { 1385 {
1145 int i; 1386 async_pending = 0;
1146 gotasync = 0;
1147 1387
1148 for (i = asynccnt; i--; ) 1388 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1389 if (asyncs [i]->sent)
1150 { 1390 {
1151 asyncs [i]->sent = 0; 1391 asyncs [i]->sent = 0;
… …
1155#endif 1395#endif
1156} 1396}
1157 1397
1158/*****************************************************************************/ 1398/*****************************************************************************/
1159 1399
1400void
1401ev_feed_signal (int signum)
1402{
1403#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop;
1405
1406 if (!EV_A)
1407 return;
1408#endif
1409
1410 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending);
1412}
1413
1160static void 1414static void
1161ev_sighandler (int signum) 1415ev_sighandler (int signum)
1162{ 1416{
1163#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct;
1165#endif
1166
1167#if _WIN32 1417#ifdef _WIN32
1168 signal (signum, ev_sighandler); 1418 signal (signum, ev_sighandler);
1169#endif 1419#endif
1170 1420
1171 signals [signum - 1].gotsig = 1; 1421 ev_feed_signal (signum);
1172 evpipe_write (EV_A_ &gotsig);
1173} 1422}
1174 1423
1175void noinline 1424void noinline
1176ev_feed_signal_event (EV_P_ int signum) 1425ev_feed_signal_event (EV_P_ int signum)
1177{ 1426{
1178 WL w; 1427 WL w;
1179 1428
1429 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return;
1431
1432 --signum;
1433
1180#if EV_MULTIPLICITY 1434#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1435 /* it is permissible to try to feed a signal to the wrong loop */
1182#endif 1436 /* or, likely more useful, feeding a signal nobody is waiting for */
1183 1437
1184 --signum; 1438 if (expect_false (signals [signum].loop != EV_A))
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 1439 return;
1440#endif
1188 1441
1189 signals [signum].gotsig = 0; 1442 signals [signum].pending = 0;
1190 1443
1191 for (w = signals [signum].head; w; w = w->next) 1444 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 1446}
1194 1447
1448#if EV_USE_SIGNALFD
1449static void
1450sigfdcb (EV_P_ ev_io *iow, int revents)
1451{
1452 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1453
1454 for (;;)
1455 {
1456 ssize_t res = read (sigfd, si, sizeof (si));
1457
1458 /* not ISO-C, as res might be -1, but works with SuS */
1459 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1460 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1461
1462 if (res < (ssize_t)sizeof (si))
1463 break;
1464 }
1465}
1466#endif
1467
1468#endif
1469
1195/*****************************************************************************/ 1470/*****************************************************************************/
1196 1471
1472#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 1473static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 1474
1201static ev_signal childev; 1475static ev_signal childev;
1202 1476
1203#ifndef WIFCONTINUED 1477#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 1478# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 1483child_reap (EV_P_ int chain, int pid, int status)
1210{ 1484{
1211 ev_child *w; 1485 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1486 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 1487
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1488 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 1489 {
1216 if ((w->pid == pid || !w->pid) 1490 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 1491 && (!traced || (w->flags & 1)))
1218 { 1492 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1493 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 1518 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 1519 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1520 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 1521
1248 child_reap (EV_A_ pid, pid, status); 1522 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 1523 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1524 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 1525}
1252 1526
1253#endif 1527#endif
1254 1528
1255/*****************************************************************************/ 1529/*****************************************************************************/
1256 1530
1531#if EV_USE_IOCP
1532# include "ev_iocp.c"
1533#endif
1257#if EV_USE_PORT 1534#if EV_USE_PORT
1258# include "ev_port.c" 1535# include "ev_port.c"
1259#endif 1536#endif
1260#if EV_USE_KQUEUE 1537#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 1538# include "ev_kqueue.c"
… …
1321#ifdef __APPLE__ 1598#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 1599 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1600 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1601 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 1602#endif
1603#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1605#endif
1326 1606
1327 return flags; 1607 return flags;
1328} 1608}
1329 1609
1330unsigned int 1610unsigned int
1331ev_embeddable_backends (void) 1611ev_embeddable_backends (void)
1332{ 1612{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 1614
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */ 1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 1617 flags &= ~EVBACKEND_EPOLL;
1338 1618
1339 return flags; 1619 return flags;
1340} 1620}
1341 1621
1342unsigned int 1622unsigned int
1343ev_backend (EV_P) 1623ev_backend (EV_P)
1344{ 1624{
1345 return backend; 1625 return backend;
1346} 1626}
1347 1627
1628#if EV_FEATURE_API
1348unsigned int 1629unsigned int
1349ev_loop_count (EV_P) 1630ev_iteration (EV_P)
1350{ 1631{
1351 return loop_count; 1632 return loop_count;
1352} 1633}
1353 1634
1635unsigned int
1636ev_depth (EV_P)
1637{
1638 return loop_depth;
1639}
1640
1354void 1641void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356{ 1643{
1357 io_blocktime = interval; 1644 io_blocktime = interval;
1358} 1645}
… …
1360void 1647void
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362{ 1649{
1363 timeout_blocktime = interval; 1650 timeout_blocktime = interval;
1364} 1651}
1652
1653void
1654ev_set_userdata (EV_P_ void *data)
1655{
1656 userdata = data;
1657}
1658
1659void *
1660ev_userdata (EV_P)
1661{
1662 return userdata;
1663}
1664
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1666{
1667 invoke_cb = invoke_pending_cb;
1668}
1669
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1671{
1672 release_cb = release;
1673 acquire_cb = acquire;
1674}
1675#endif
1365 1676
1366/* initialise a loop structure, must be zero-initialised */ 1677/* initialise a loop structure, must be zero-initialised */
1367static void noinline 1678static void noinline
1368loop_init (EV_P_ unsigned int flags) 1679loop_init (EV_P_ unsigned int flags)
1369{ 1680{
1370 if (!backend) 1681 if (!backend)
1371 { 1682 {
1683 origflags = flags;
1684
1372#if EV_USE_REALTIME 1685#if EV_USE_REALTIME
1373 if (!have_realtime) 1686 if (!have_realtime)
1374 { 1687 {
1375 struct timespec ts; 1688 struct timespec ts;
1376 1689
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1700 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 1701 have_monotonic = 1;
1389 } 1702 }
1390#endif 1703#endif
1391 1704
1705 /* pid check not overridable via env */
1706#ifndef _WIN32
1707 if (flags & EVFLAG_FORKCHECK)
1708 curpid = getpid ();
1709#endif
1710
1711 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS"));
1715
1392 ev_rt_now = ev_time (); 1716 ev_rt_now = ev_time ();
1393 mn_now = get_clock (); 1717 mn_now = get_clock ();
1394 now_floor = mn_now; 1718 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now; 1719 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending;
1722#endif
1396 1723
1397 io_blocktime = 0.; 1724 io_blocktime = 0.;
1398 timeout_blocktime = 0.; 1725 timeout_blocktime = 0.;
1399 backend = 0; 1726 backend = 0;
1400 backend_fd = -1; 1727 backend_fd = -1;
1401 gotasync = 0; 1728 sig_pending = 0;
1729#if EV_ASYNC_ENABLE
1730 async_pending = 0;
1731#endif
1402#if EV_USE_INOTIFY 1732#if EV_USE_INOTIFY
1403 fs_fd = -2; 1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1404#endif 1734#endif
1405 1735#if EV_USE_SIGNALFD
1406 /* pid check not overridable via env */ 1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1407#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid ();
1410#endif 1737#endif
1411 1738
1412 if (!(flags & EVFLAG_NOENV) 1739 if (!(flags & EVBACKEND_MASK))
1413 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS"));
1416
1417 if (!(flags & 0x0000ffffU))
1418 flags |= ev_recommended_backends (); 1740 flags |= ev_recommended_backends ();
1419 1741
1742#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif
1420#if EV_USE_PORT 1745#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 1747#endif
1423#if EV_USE_KQUEUE 1748#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 1759#endif
1435 1760
1436 ev_prepare_init (&pending_w, pendingcb); 1761 ev_prepare_init (&pending_w, pendingcb);
1437 1762
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 1764 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 1765 ev_set_priority (&pipe_w, EV_MAXPRI);
1766#endif
1440 } 1767 }
1441} 1768}
1442 1769
1443/* free up a loop structure */ 1770/* free up a loop structure */
1444static void noinline 1771void
1445loop_destroy (EV_P) 1772ev_loop_destroy (EV_P)
1446{ 1773{
1447 int i; 1774 int i;
1448 1775
1776#if EV_MULTIPLICITY
1777 /* mimic free (0) */
1778 if (!EV_A)
1779 return;
1780#endif
1781
1782#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt))
1785 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING;
1788 }
1789#endif
1790
1791#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev))
1793 {
1794 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev);
1796 }
1797#endif
1798
1449 if (ev_is_active (&pipe_w)) 1799 if (ev_is_active (&pipe_w))
1450 { 1800 {
1451 ev_ref (EV_A); /* signal watcher */ 1801 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 1802 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 1803
1454#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1805 if (evfd >= 0)
1456 close (evfd); 1806 close (evfd);
1457#endif 1807#endif
1458 1808
1459 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1460 { 1810 {
1461 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1813 }
1464 } 1814 }
1815
1816#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w))
1818 close (sigfd);
1819#endif
1465 1820
1466#if EV_USE_INOTIFY 1821#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 1822 if (fs_fd >= 0)
1468 close (fs_fd); 1823 close (fs_fd);
1469#endif 1824#endif
1470 1825
1471 if (backend_fd >= 0) 1826 if (backend_fd >= 0)
1472 close (backend_fd); 1827 close (backend_fd);
1473 1828
1829#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif
1474#if EV_USE_PORT 1832#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 1834#endif
1477#if EV_USE_KQUEUE 1835#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 1851#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 1852 array_free (idle, [i]);
1495#endif 1853#endif
1496 } 1854 }
1497 1855
1498 ev_free (anfds); anfdmax = 0; 1856 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 1857
1500 /* have to use the microsoft-never-gets-it-right macro */ 1858 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 1859 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 1860 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 1861 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 1863 array_free (periodic, EMPTY);
1506#endif 1864#endif
1507#if EV_FORK_ENABLE 1865#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 1866 array_free (fork, EMPTY);
1509#endif 1867#endif
1868#if EV_CLEANUP_ENABLE
1869 array_free (cleanup, EMPTY);
1870#endif
1510 array_free (prepare, EMPTY); 1871 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 1872 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 1874 array_free (async, EMPTY);
1514#endif 1875#endif
1515 1876
1516 backend = 0; 1877 backend = 0;
1878
1879#if EV_MULTIPLICITY
1880 if (ev_is_default_loop (EV_A))
1881#endif
1882 ev_default_loop_ptr = 0;
1883#if EV_MULTIPLICITY
1884 else
1885 ev_free (EV_A);
1886#endif
1517} 1887}
1518 1888
1519#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 1890inline_size void infy_fork (EV_P);
1521#endif 1891#endif
… …
1538 1908
1539 if (ev_is_active (&pipe_w)) 1909 if (ev_is_active (&pipe_w))
1540 { 1910 {
1541 /* this "locks" the handlers against writing to the pipe */ 1911 /* this "locks" the handlers against writing to the pipe */
1542 /* while we modify the fd vars */ 1912 /* while we modify the fd vars */
1543 gotsig = 1; 1913 sig_pending = 1;
1544#if EV_ASYNC_ENABLE 1914#if EV_ASYNC_ENABLE
1545 gotasync = 1; 1915 async_pending = 1;
1546#endif 1916#endif
1547 1917
1548 ev_ref (EV_A); 1918 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 1919 ev_io_stop (EV_A_ &pipe_w);
1550 1920
… …
1553 close (evfd); 1923 close (evfd);
1554#endif 1924#endif
1555 1925
1556 if (evpipe [0] >= 0) 1926 if (evpipe [0] >= 0)
1557 { 1927 {
1558 close (evpipe [0]); 1928 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 1930 }
1561 1931
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 1933 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 1934 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 1935 pipecb (EV_A_ &pipe_w, EV_READ);
1936#endif
1565 } 1937 }
1566 1938
1567 postfork = 0; 1939 postfork = 0;
1568} 1940}
1569 1941
1570#if EV_MULTIPLICITY 1942#if EV_MULTIPLICITY
1571 1943
1572struct ev_loop * 1944struct ev_loop *
1573ev_loop_new (unsigned int flags) 1945ev_loop_new (unsigned int flags)
1574{ 1946{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 1948
1577 memset (loop, 0, sizeof (struct ev_loop)); 1949 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 1950 loop_init (EV_A_ flags);
1580 1951
1581 if (ev_backend (EV_A)) 1952 if (ev_backend (EV_A))
1582 return loop; 1953 return EV_A;
1583 1954
1955 ev_free (EV_A);
1584 return 0; 1956 return 0;
1585} 1957}
1586 1958
1587void 1959#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 1960
1600#if EV_VERIFY 1961#if EV_VERIFY
1601static void noinline 1962static void noinline
1602verify_watcher (EV_P_ W w) 1963verify_watcher (EV_P_ W w)
1603{ 1964{
… …
1631 verify_watcher (EV_A_ ws [cnt]); 1992 verify_watcher (EV_A_ ws [cnt]);
1632 } 1993 }
1633} 1994}
1634#endif 1995#endif
1635 1996
1997#if EV_FEATURE_API
1636void 1998void
1637ev_loop_verify (EV_P) 1999ev_verify (EV_P)
1638{ 2000{
1639#if EV_VERIFY 2001#if EV_VERIFY
1640 int i; 2002 int i;
1641 WL w; 2003 WL w;
1642 2004
… …
1676#if EV_FORK_ENABLE 2038#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2039 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2040 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2041#endif
1680 2042
2043#if EV_CLEANUP_ENABLE
2044 assert (cleanupmax >= cleanupcnt);
2045 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2046#endif
2047
1681#if EV_ASYNC_ENABLE 2048#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2049 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2050 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2051#endif
1685 2052
2053#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2054 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2055 array_verify (EV_A_ (W *)prepares, preparecnt);
2056#endif
1688 2057
2058#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2059 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2060 array_verify (EV_A_ (W *)checks, checkcnt);
2061#endif
1691 2062
1692# if 0 2063# if 0
2064#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2065 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2066 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2067#endif
1695# endif 2068# endif
1696#endif 2069#endif
1697} 2070}
1698 2071#endif
1699#endif /* multiplicity */
1700 2072
1701#if EV_MULTIPLICITY 2073#if EV_MULTIPLICITY
1702struct ev_loop * 2074struct ev_loop *
1703ev_default_loop_init (unsigned int flags)
1704#else 2075#else
1705int 2076int
2077#endif
1706ev_default_loop (unsigned int flags) 2078ev_default_loop (unsigned int flags)
1707#endif
1708{ 2079{
1709 if (!ev_default_loop_ptr) 2080 if (!ev_default_loop_ptr)
1710 { 2081 {
1711#if EV_MULTIPLICITY 2082#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2083 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2084#else
1714 ev_default_loop_ptr = 1; 2085 ev_default_loop_ptr = 1;
1715#endif 2086#endif
1716 2087
1717 loop_init (EV_A_ flags); 2088 loop_init (EV_A_ flags);
1718 2089
1719 if (ev_backend (EV_A)) 2090 if (ev_backend (EV_A))
1720 { 2091 {
1721#ifndef _WIN32 2092#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2093 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2094 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2095 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2096 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2097#endif
… …
1731 2102
1732 return ev_default_loop_ptr; 2103 return ev_default_loop_ptr;
1733} 2104}
1734 2105
1735void 2106void
1736ev_default_destroy (void) 2107ev_loop_fork (EV_P)
1737{ 2108{
1738#if EV_MULTIPLICITY
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */ 2109 postfork = 1; /* must be in line with ev_default_fork */
1760} 2110}
1761 2111
1762/*****************************************************************************/ 2112/*****************************************************************************/
1763 2113
1764void 2114void
1765ev_invoke (EV_P_ void *w, int revents) 2115ev_invoke (EV_P_ void *w, int revents)
1766{ 2116{
1767 EV_CB_INVOKE ((W)w, revents); 2117 EV_CB_INVOKE ((W)w, revents);
1768} 2118}
1769 2119
1770inline_speed void 2120unsigned int
1771call_pending (EV_P) 2121ev_pending_count (EV_P)
2122{
2123 int pri;
2124 unsigned int count = 0;
2125
2126 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri];
2128
2129 return count;
2130}
2131
2132void noinline
2133ev_invoke_pending (EV_P)
1772{ 2134{
1773 int pri; 2135 int pri;
1774 2136
1775 for (pri = NUMPRI; pri--; ) 2137 for (pri = NUMPRI; pri--; )
1776 while (pendingcnt [pri]) 2138 while (pendingcnt [pri])
1777 { 2139 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1779
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782 2141
1783 p->w->pending = 0; 2142 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2143 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2144 EV_FREQUENT_CHECK;
1786 } 2145 }
… …
1843 EV_FREQUENT_CHECK; 2202 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2203 feed_reverse (EV_A_ (W)w);
1845 } 2204 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2205 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2206
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2207 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2208 }
1850} 2209}
1851 2210
1852#if EV_PERIODIC_ENABLE 2211#if EV_PERIODIC_ENABLE
2212
2213inline_speed void
2214periodic_recalc (EV_P_ ev_periodic *w)
2215{
2216 /* TODO: use slow but potentially more correct incremental algo, */
2217 /* also do not rely on ceil */
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2219}
2220
1853/* make periodics pending */ 2221/* make periodics pending */
1854inline_size void 2222inline_size void
1855periodics_reify (EV_P) 2223periodics_reify (EV_P)
1856{ 2224{
1857 EV_FREQUENT_CHECK; 2225 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2244 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2245 downheap (periodics, periodiccnt, HEAP0);
1878 } 2246 }
1879 else if (w->interval) 2247 else if (w->interval)
1880 { 2248 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2249 periodic_recalc (EV_A_ w);
2250
1882 /* if next trigger time is not sufficiently in the future, put it there */ 2251 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */ 2252 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON) 2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 { 2254 {
1886 ev_at (w) += w->interval; 2255 ev_at (w) += w->interval;
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2275 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2276 }
1908} 2277}
1909 2278
1910/* simply recalculate all periodics */ 2279/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2280/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2281static void noinline
1913periodics_reschedule (EV_P) 2282periodics_reschedule (EV_P)
1914{ 2283{
1915 int i; 2284 int i;
1916 2285
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2289 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2290
1922 if (w->reschedule_cb) 2291 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2292 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2293 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2294 periodic_recalc (EV_A_ w);
1926 2295
1927 ANHE_at_cache (periodics [i]); 2296 ANHE_at_cache (periodics [i]);
1928 } 2297 }
1929 2298
1930 reheap (periodics, periodiccnt); 2299 reheap (periodics, periodiccnt);
… …
1944 ANHE_at_cache (*he); 2313 ANHE_at_cache (*he);
1945 } 2314 }
1946} 2315}
1947 2316
1948/* fetch new monotonic and realtime times from the kernel */ 2317/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2318/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2319inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2320time_update (EV_P_ ev_tstamp max_block)
1952{ 2321{
1953#if EV_USE_MONOTONIC 2322#if EV_USE_MONOTONIC
1954 if (expect_true (have_monotonic)) 2323 if (expect_true (have_monotonic))
… …
2011 2380
2012 mn_now = ev_rt_now; 2381 mn_now = ev_rt_now;
2013 } 2382 }
2014} 2383}
2015 2384
2016static int loop_done;
2017
2018void 2385void
2019ev_loop (EV_P_ int flags) 2386ev_run (EV_P_ int flags)
2020{ 2387{
2388#if EV_FEATURE_API
2389 ++loop_depth;
2390#endif
2391
2392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2393
2021 loop_done = EVUNLOOP_CANCEL; 2394 loop_done = EVBREAK_CANCEL;
2022 2395
2023 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2024 2397
2025 do 2398 do
2026 { 2399 {
2027#if EV_VERIFY >= 2 2400#if EV_VERIFY >= 2
2028 ev_loop_verify (EV_A); 2401 ev_verify (EV_A);
2029#endif 2402#endif
2030 2403
2031#ifndef _WIN32 2404#ifndef _WIN32
2032 if (expect_false (curpid)) /* penalise the forking check even more */ 2405 if (expect_false (curpid)) /* penalise the forking check even more */
2033 if (expect_false (getpid () != curpid)) 2406 if (expect_false (getpid () != curpid))
… …
2041 /* we might have forked, so queue fork handlers */ 2414 /* we might have forked, so queue fork handlers */
2042 if (expect_false (postfork)) 2415 if (expect_false (postfork))
2043 if (forkcnt) 2416 if (forkcnt)
2044 { 2417 {
2045 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2046 call_pending (EV_A); 2419 EV_INVOKE_PENDING;
2047 } 2420 }
2048#endif 2421#endif
2049 2422
2423#if EV_PREPARE_ENABLE
2050 /* queue prepare watchers (and execute them) */ 2424 /* queue prepare watchers (and execute them) */
2051 if (expect_false (preparecnt)) 2425 if (expect_false (preparecnt))
2052 { 2426 {
2053 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2054 call_pending (EV_A); 2428 EV_INVOKE_PENDING;
2055 } 2429 }
2430#endif
2431
2432 if (expect_false (loop_done))
2433 break;
2056 2434
2057 /* we might have forked, so reify kernel state if necessary */ 2435 /* we might have forked, so reify kernel state if necessary */
2058 if (expect_false (postfork)) 2436 if (expect_false (postfork))
2059 loop_fork (EV_A); 2437 loop_fork (EV_A);
2060 2438
… …
2064 /* calculate blocking time */ 2442 /* calculate blocking time */
2065 { 2443 {
2066 ev_tstamp waittime = 0.; 2444 ev_tstamp waittime = 0.;
2067 ev_tstamp sleeptime = 0.; 2445 ev_tstamp sleeptime = 0.;
2068 2446
2447 /* remember old timestamp for io_blocktime calculation */
2448 ev_tstamp prev_mn_now = mn_now;
2449
2450 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100);
2452
2069 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2070 { 2454 {
2071 /* update time to cancel out callback processing overhead */
2072 time_update (EV_A_ 1e100);
2073
2074 waittime = MAX_BLOCKTIME; 2455 waittime = MAX_BLOCKTIME;
2075 2456
2076 if (timercnt) 2457 if (timercnt)
2077 { 2458 {
2078 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2085 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2086 if (waittime > to) waittime = to; 2467 if (waittime > to) waittime = to;
2087 } 2468 }
2088#endif 2469#endif
2089 2470
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */
2090 if (expect_false (waittime < timeout_blocktime)) 2472 if (expect_false (waittime < timeout_blocktime))
2091 waittime = timeout_blocktime; 2473 waittime = timeout_blocktime;
2092 2474
2093 sleeptime = waittime - backend_fudge; 2475 /* extra check because io_blocktime is commonly 0 */
2094
2095 if (expect_true (sleeptime > io_blocktime)) 2476 if (expect_false (io_blocktime))
2096 sleeptime = io_blocktime;
2097
2098 if (sleeptime)
2099 { 2477 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479
2480 if (sleeptime > waittime - backend_fudge)
2481 sleeptime = waittime - backend_fudge;
2482
2483 if (expect_true (sleeptime > 0.))
2484 {
2100 ev_sleep (sleeptime); 2485 ev_sleep (sleeptime);
2101 waittime -= sleeptime; 2486 waittime -= sleeptime;
2487 }
2102 } 2488 }
2103 } 2489 }
2104 2490
2491#if EV_FEATURE_API
2105 ++loop_count; 2492 ++loop_count;
2493#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2106 backend_poll (EV_A_ waittime); 2495 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2107 2497
2108 /* update ev_rt_now, do magic */ 2498 /* update ev_rt_now, do magic */
2109 time_update (EV_A_ waittime + sleeptime); 2499 time_update (EV_A_ waittime + sleeptime);
2110 } 2500 }
2111 2501
… …
2118#if EV_IDLE_ENABLE 2508#if EV_IDLE_ENABLE
2119 /* queue idle watchers unless other events are pending */ 2509 /* queue idle watchers unless other events are pending */
2120 idle_reify (EV_A); 2510 idle_reify (EV_A);
2121#endif 2511#endif
2122 2512
2513#if EV_CHECK_ENABLE
2123 /* queue check watchers, to be executed first */ 2514 /* queue check watchers, to be executed first */
2124 if (expect_false (checkcnt)) 2515 if (expect_false (checkcnt))
2125 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif
2126 2518
2127 call_pending (EV_A); 2519 EV_INVOKE_PENDING;
2128 } 2520 }
2129 while (expect_true ( 2521 while (expect_true (
2130 activecnt 2522 activecnt
2131 && !loop_done 2523 && !loop_done
2132 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2133 )); 2525 ));
2134 2526
2135 if (loop_done == EVUNLOOP_ONE) 2527 if (loop_done == EVBREAK_ONE)
2136 loop_done = EVUNLOOP_CANCEL; 2528 loop_done = EVBREAK_CANCEL;
2137}
2138 2529
2530#if EV_FEATURE_API
2531 --loop_depth;
2532#endif
2533}
2534
2139void 2535void
2140ev_unloop (EV_P_ int how) 2536ev_break (EV_P_ int how)
2141{ 2537{
2142 loop_done = how; 2538 loop_done = how;
2143} 2539}
2144 2540
2145void 2541void
… …
2192inline_size void 2588inline_size void
2193wlist_del (WL *head, WL elem) 2589wlist_del (WL *head, WL elem)
2194{ 2590{
2195 while (*head) 2591 while (*head)
2196 { 2592 {
2197 if (*head == elem) 2593 if (expect_true (*head == elem))
2198 { 2594 {
2199 *head = elem->next; 2595 *head = elem->next;
2200 return; 2596 break;
2201 } 2597 }
2202 2598
2203 head = &(*head)->next; 2599 head = &(*head)->next;
2204 } 2600 }
2205} 2601}
… …
2233} 2629}
2234 2630
2235inline_size void 2631inline_size void
2236pri_adjust (EV_P_ W w) 2632pri_adjust (EV_P_ W w)
2237{ 2633{
2238 int pri = w->priority; 2634 int pri = ev_priority (w);
2239 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2635 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2240 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2636 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2241 w->priority = pri; 2637 ev_set_priority (w, pri);
2242} 2638}
2243 2639
2244inline_speed void 2640inline_speed void
2245ev_start (EV_P_ W w, int active) 2641ev_start (EV_P_ W w, int active)
2246{ 2642{
… …
2265 2661
2266 if (expect_false (ev_is_active (w))) 2662 if (expect_false (ev_is_active (w)))
2267 return; 2663 return;
2268 2664
2269 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2665 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2270 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2271 2667
2272 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2273 2669
2274 ev_start (EV_A_ (W)w, 1); 2670 ev_start (EV_A_ (W)w, 1);
2275 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2276 wlist_add (&anfds[fd].head, (WL)w); 2672 wlist_add (&anfds[fd].head, (WL)w);
2277 2673
2278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2279 w->events &= ~EV__IOFDSET; 2675 w->events &= ~EV__IOFDSET;
2280 2676
2281 EV_FREQUENT_CHECK; 2677 EV_FREQUENT_CHECK;
2282} 2678}
2283 2679
… …
2293 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
2294 2690
2295 wlist_del (&anfds[w->fd].head, (WL)w); 2691 wlist_del (&anfds[w->fd].head, (WL)w);
2296 ev_stop (EV_A_ (W)w); 2692 ev_stop (EV_A_ (W)w);
2297 2693
2298 fd_change (EV_A_ w->fd, 1); 2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2299 2695
2300 EV_FREQUENT_CHECK; 2696 EV_FREQUENT_CHECK;
2301} 2697}
2302 2698
2303void noinline 2699void noinline
… …
2345 timers [active] = timers [timercnt + HEAP0]; 2741 timers [active] = timers [timercnt + HEAP0];
2346 adjustheap (timers, timercnt, active); 2742 adjustheap (timers, timercnt, active);
2347 } 2743 }
2348 } 2744 }
2349 2745
2350 EV_FREQUENT_CHECK;
2351
2352 ev_at (w) -= mn_now; 2746 ev_at (w) -= mn_now;
2353 2747
2354 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2749
2750 EV_FREQUENT_CHECK;
2355} 2751}
2356 2752
2357void noinline 2753void noinline
2358ev_timer_again (EV_P_ ev_timer *w) 2754ev_timer_again (EV_P_ ev_timer *w)
2359{ 2755{
… …
2377 } 2773 }
2378 2774
2379 EV_FREQUENT_CHECK; 2775 EV_FREQUENT_CHECK;
2380} 2776}
2381 2777
2778ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w)
2780{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782}
2783
2382#if EV_PERIODIC_ENABLE 2784#if EV_PERIODIC_ENABLE
2383void noinline 2785void noinline
2384ev_periodic_start (EV_P_ ev_periodic *w) 2786ev_periodic_start (EV_P_ ev_periodic *w)
2385{ 2787{
2386 if (expect_false (ev_is_active (w))) 2788 if (expect_false (ev_is_active (w)))
… …
2389 if (w->reschedule_cb) 2791 if (w->reschedule_cb)
2390 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2391 else if (w->interval) 2793 else if (w->interval)
2392 { 2794 {
2393 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2795 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2394 /* this formula differs from the one in periodic_reify because we do not always round up */ 2796 periodic_recalc (EV_A_ w);
2395 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2396 } 2797 }
2397 else 2798 else
2398 ev_at (w) = w->offset; 2799 ev_at (w) = w->offset;
2399 2800
2400 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
… …
2432 periodics [active] = periodics [periodiccnt + HEAP0]; 2833 periodics [active] = periodics [periodiccnt + HEAP0];
2433 adjustheap (periodics, periodiccnt, active); 2834 adjustheap (periodics, periodiccnt, active);
2434 } 2835 }
2435 } 2836 }
2436 2837
2437 EV_FREQUENT_CHECK;
2438
2439 ev_stop (EV_A_ (W)w); 2838 ev_stop (EV_A_ (W)w);
2839
2840 EV_FREQUENT_CHECK;
2440} 2841}
2441 2842
2442void noinline 2843void noinline
2443ev_periodic_again (EV_P_ ev_periodic *w) 2844ev_periodic_again (EV_P_ ev_periodic *w)
2444{ 2845{
… …
2450 2851
2451#ifndef SA_RESTART 2852#ifndef SA_RESTART
2452# define SA_RESTART 0 2853# define SA_RESTART 0
2453#endif 2854#endif
2454 2855
2856#if EV_SIGNAL_ENABLE
2857
2455void noinline 2858void noinline
2456ev_signal_start (EV_P_ ev_signal *w) 2859ev_signal_start (EV_P_ ev_signal *w)
2457{ 2860{
2458#if EV_MULTIPLICITY
2459 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2460#endif
2461 if (expect_false (ev_is_active (w))) 2861 if (expect_false (ev_is_active (w)))
2462 return; 2862 return;
2463 2863
2464 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2465 2865
2466 evpipe_init (EV_A); 2866#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2467 2869
2468 EV_FREQUENT_CHECK; 2870 signals [w->signum - 1].loop = EV_A;
2871#endif
2469 2872
2873 EV_FREQUENT_CHECK;
2874
2875#if EV_USE_SIGNALFD
2876 if (sigfd == -2)
2470 { 2877 {
2471#ifndef _WIN32 2878 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2472 sigset_t full, prev; 2879 if (sigfd < 0 && errno == EINVAL)
2473 sigfillset (&full); 2880 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2474 sigprocmask (SIG_SETMASK, &full, &prev);
2475#endif
2476 2881
2477 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2882 if (sigfd >= 0)
2883 {
2884 fd_intern (sigfd); /* doing it twice will not hurt */
2478 2885
2479#ifndef _WIN32 2886 sigemptyset (&sigfd_set);
2480 sigprocmask (SIG_SETMASK, &prev, 0); 2887
2481#endif 2888 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2889 ev_set_priority (&sigfd_w, EV_MAXPRI);
2890 ev_io_start (EV_A_ &sigfd_w);
2891 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2892 }
2482 } 2893 }
2894
2895 if (sigfd >= 0)
2896 {
2897 /* TODO: check .head */
2898 sigaddset (&sigfd_set, w->signum);
2899 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 }
2903#endif
2483 2904
2484 ev_start (EV_A_ (W)w, 1); 2905 ev_start (EV_A_ (W)w, 1);
2485 wlist_add (&signals [w->signum - 1].head, (WL)w); 2906 wlist_add (&signals [w->signum - 1].head, (WL)w);
2486 2907
2487 if (!((WL)w)->next) 2908 if (!((WL)w)->next)
2909# if EV_USE_SIGNALFD
2910 if (sigfd < 0) /*TODO*/
2911# endif
2488 { 2912 {
2489#if _WIN32 2913# ifdef _WIN32
2914 evpipe_init (EV_A);
2915
2490 signal (w->signum, ev_sighandler); 2916 signal (w->signum, ev_sighandler);
2491#else 2917# else
2492 struct sigaction sa; 2918 struct sigaction sa;
2919
2920 evpipe_init (EV_A);
2921
2493 sa.sa_handler = ev_sighandler; 2922 sa.sa_handler = ev_sighandler;
2494 sigfillset (&sa.sa_mask); 2923 sigfillset (&sa.sa_mask);
2495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2924 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2496 sigaction (w->signum, &sa, 0); 2925 sigaction (w->signum, &sa, 0);
2926
2927 if (origflags & EVFLAG_NOSIGMASK)
2928 {
2929 sigemptyset (&sa.sa_mask);
2930 sigaddset (&sa.sa_mask, w->signum);
2931 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2932 }
2497#endif 2933#endif
2498 } 2934 }
2499 2935
2500 EV_FREQUENT_CHECK; 2936 EV_FREQUENT_CHECK;
2501} 2937}
2502 2938
2503void noinline 2939void noinline
… …
2511 2947
2512 wlist_del (&signals [w->signum - 1].head, (WL)w); 2948 wlist_del (&signals [w->signum - 1].head, (WL)w);
2513 ev_stop (EV_A_ (W)w); 2949 ev_stop (EV_A_ (W)w);
2514 2950
2515 if (!signals [w->signum - 1].head) 2951 if (!signals [w->signum - 1].head)
2952 {
2953#if EV_MULTIPLICITY
2954 signals [w->signum - 1].loop = 0; /* unattach from signal */
2955#endif
2956#if EV_USE_SIGNALFD
2957 if (sigfd >= 0)
2958 {
2959 sigset_t ss;
2960
2961 sigemptyset (&ss);
2962 sigaddset (&ss, w->signum);
2963 sigdelset (&sigfd_set, w->signum);
2964
2965 signalfd (sigfd, &sigfd_set, 0);
2966 sigprocmask (SIG_UNBLOCK, &ss, 0);
2967 }
2968 else
2969#endif
2516 signal (w->signum, SIG_DFL); 2970 signal (w->signum, SIG_DFL);
2971 }
2517 2972
2518 EV_FREQUENT_CHECK; 2973 EV_FREQUENT_CHECK;
2519} 2974}
2975
2976#endif
2977
2978#if EV_CHILD_ENABLE
2520 2979
2521void 2980void
2522ev_child_start (EV_P_ ev_child *w) 2981ev_child_start (EV_P_ ev_child *w)
2523{ 2982{
2524#if EV_MULTIPLICITY 2983#if EV_MULTIPLICITY
… …
2528 return; 2987 return;
2529 2988
2530 EV_FREQUENT_CHECK; 2989 EV_FREQUENT_CHECK;
2531 2990
2532 ev_start (EV_A_ (W)w, 1); 2991 ev_start (EV_A_ (W)w, 1);
2533 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2992 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2534 2993
2535 EV_FREQUENT_CHECK; 2994 EV_FREQUENT_CHECK;
2536} 2995}
2537 2996
2538void 2997void
… …
2542 if (expect_false (!ev_is_active (w))) 3001 if (expect_false (!ev_is_active (w)))
2543 return; 3002 return;
2544 3003
2545 EV_FREQUENT_CHECK; 3004 EV_FREQUENT_CHECK;
2546 3005
2547 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2548 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
2549 3008
2550 EV_FREQUENT_CHECK; 3009 EV_FREQUENT_CHECK;
2551} 3010}
3011
3012#endif
2552 3013
2553#if EV_STAT_ENABLE 3014#if EV_STAT_ENABLE
2554 3015
2555# ifdef _WIN32 3016# ifdef _WIN32
2556# undef lstat 3017# undef lstat
… …
2562#define MIN_STAT_INTERVAL 0.1074891 3023#define MIN_STAT_INTERVAL 0.1074891
2563 3024
2564static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2565 3026
2566#if EV_USE_INOTIFY 3027#if EV_USE_INOTIFY
2567# define EV_INOTIFY_BUFSIZE 8192 3028
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2568 3031
2569static void noinline 3032static void noinline
2570infy_add (EV_P_ ev_stat *w) 3033infy_add (EV_P_ ev_stat *w)
2571{ 3034{
2572 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); 3035 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);
2573 3036
2574 if (w->wd < 0) 3037 if (w->wd >= 0)
3038 {
3039 struct statfs sfs;
3040
3041 /* now local changes will be tracked by inotify, but remote changes won't */
3042 /* unless the filesystem is known to be local, we therefore still poll */
3043 /* also do poll on <2.6.25, but with normal frequency */
3044
3045 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */
3050 || sfs.f_type == 0x3153464a /* jfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */
3053 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2575 { 3057 }
3058 else
3059 {
3060 /* can't use inotify, continue to stat */
2576 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3061 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2577 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2578 3062
2579 /* monitor some parent directory for speedup hints */ 3063 /* if path is not there, monitor some parent directory for speedup hints */
2580 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3064 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2581 /* but an efficiency issue only */ 3065 /* but an efficiency issue only */
2582 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3066 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2583 { 3067 {
2584 char path [4096]; 3068 char path [4096];
… …
2600 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2601 } 3085 }
2602 } 3086 }
2603 3087
2604 if (w->wd >= 0) 3088 if (w->wd >= 0)
2605 {
2606 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3089 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2607 3090
2608 /* now local changes will be tracked by inotify, but remote changes won't */ 3091 /* now re-arm timer, if required */
2609 /* unless the filesystem it known to be local, we therefore still poll */ 3092 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2610 /* also do poll on <2.6.25, but with normal frequency */
2611 struct statfs sfs;
2612
2613 if (fs_2625 && !statfs (w->path, &sfs))
2614 if (sfs.f_type == 0x1373 /* devfs */
2615 || sfs.f_type == 0xEF53 /* ext2/3 */
2616 || sfs.f_type == 0x3153464a /* jfs */
2617 || sfs.f_type == 0x52654973 /* reiser3 */
2618 || sfs.f_type == 0x01021994 /* tempfs */
2619 || sfs.f_type == 0x58465342 /* xfs */)
2620 return;
2621
2622 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2623 ev_timer_again (EV_A_ &w->timer); 3093 ev_timer_again (EV_A_ &w->timer);
2624 } 3094 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2625} 3095}
2626 3096
2627static void noinline 3097static void noinline
2628infy_del (EV_P_ ev_stat *w) 3098infy_del (EV_P_ ev_stat *w)
2629{ 3099{
… …
2632 3102
2633 if (wd < 0) 3103 if (wd < 0)
2634 return; 3104 return;
2635 3105
2636 w->wd = -2; 3106 w->wd = -2;
2637 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3107 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2638 wlist_del (&fs_hash [slot].head, (WL)w); 3108 wlist_del (&fs_hash [slot].head, (WL)w);
2639 3109
2640 /* remove this watcher, if others are watching it, they will rearm */ 3110 /* remove this watcher, if others are watching it, they will rearm */
2641 inotify_rm_watch (fs_fd, wd); 3111 inotify_rm_watch (fs_fd, wd);
2642} 3112}
… …
2644static void noinline 3114static void noinline
2645infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2646{ 3116{
2647 if (slot < 0) 3117 if (slot < 0)
2648 /* overflow, need to check for all hash slots */ 3118 /* overflow, need to check for all hash slots */
2649 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2650 infy_wd (EV_A_ slot, wd, ev); 3120 infy_wd (EV_A_ slot, wd, ev);
2651 else 3121 else
2652 { 3122 {
2653 WL w_; 3123 WL w_;
2654 3124
2655 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3125 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2656 { 3126 {
2657 ev_stat *w = (ev_stat *)w_; 3127 ev_stat *w = (ev_stat *)w_;
2658 w_ = w_->next; /* lets us remove this watcher and all before it */ 3128 w_ = w_->next; /* lets us remove this watcher and all before it */
2659 3129
2660 if (w->wd == wd || wd == -1) 3130 if (w->wd == wd || wd == -1)
2661 { 3131 {
2662 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3132 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2663 { 3133 {
2664 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3134 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2665 w->wd = -1; 3135 w->wd = -1;
2666 infy_add (EV_A_ w); /* re-add, no matter what */ 3136 infy_add (EV_A_ w); /* re-add, no matter what */
2667 } 3137 }
2668 3138
2669 stat_timer_cb (EV_A_ &w->timer, 0); 3139 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2674 3144
2675static void 3145static void
2676infy_cb (EV_P_ ev_io *w, int revents) 3146infy_cb (EV_P_ ev_io *w, int revents)
2677{ 3147{
2678 char buf [EV_INOTIFY_BUFSIZE]; 3148 char buf [EV_INOTIFY_BUFSIZE];
2679 struct inotify_event *ev = (struct inotify_event *)buf;
2680 int ofs; 3149 int ofs;
2681 int len = read (fs_fd, buf, sizeof (buf)); 3150 int len = read (fs_fd, buf, sizeof (buf));
2682 3151
2683 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3152 for (ofs = 0; ofs < len; )
3153 {
3154 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2684 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3155 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len;
3157 }
2685} 3158}
2686 3159
2687inline_size void 3160inline_size void
2688check_2625 (EV_P) 3161ev_check_2625 (EV_P)
2689{ 3162{
2690 /* kernels < 2.6.25 are borked 3163 /* kernels < 2.6.25 are borked
2691 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2692 */ 3165 */
2693 struct utsname buf; 3166 if (ev_linux_version () < 0x020619)
2694 int major, minor, micro;
2695
2696 if (uname (&buf))
2697 return; 3167 return;
2698 3168
2699 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2700 return;
2701
2702 if (major < 2
2703 || (major == 2 && minor < 6)
2704 || (major == 2 && minor == 6 && micro < 25))
2705 return;
2706
2707 fs_2625 = 1; 3169 fs_2625 = 1;
3170}
3171
3172inline_size int
3173infy_newfd (void)
3174{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0)
3178 return fd;
3179#endif
3180 return inotify_init ();
2708} 3181}
2709 3182
2710inline_size void 3183inline_size void
2711infy_init (EV_P) 3184infy_init (EV_P)
2712{ 3185{
2713 if (fs_fd != -2) 3186 if (fs_fd != -2)
2714 return; 3187 return;
2715 3188
2716 fs_fd = -1; 3189 fs_fd = -1;
2717 3190
2718 check_2625 (EV_A); 3191 ev_check_2625 (EV_A);
2719 3192
2720 fs_fd = inotify_init (); 3193 fs_fd = infy_newfd ();
2721 3194
2722 if (fs_fd >= 0) 3195 if (fs_fd >= 0)
2723 { 3196 {
3197 fd_intern (fs_fd);
2724 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3198 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2725 ev_set_priority (&fs_w, EV_MAXPRI); 3199 ev_set_priority (&fs_w, EV_MAXPRI);
2726 ev_io_start (EV_A_ &fs_w); 3200 ev_io_start (EV_A_ &fs_w);
3201 ev_unref (EV_A);
2727 } 3202 }
2728} 3203}
2729 3204
2730inline_size void 3205inline_size void
2731infy_fork (EV_P) 3206infy_fork (EV_P)
… …
2733 int slot; 3208 int slot;
2734 3209
2735 if (fs_fd < 0) 3210 if (fs_fd < 0)
2736 return; 3211 return;
2737 3212
3213 ev_ref (EV_A);
3214 ev_io_stop (EV_A_ &fs_w);
2738 close (fs_fd); 3215 close (fs_fd);
2739 fs_fd = inotify_init (); 3216 fs_fd = infy_newfd ();
2740 3217
3218 if (fs_fd >= 0)
3219 {
3220 fd_intern (fs_fd);
3221 ev_io_set (&fs_w, fs_fd, EV_READ);
3222 ev_io_start (EV_A_ &fs_w);
3223 ev_unref (EV_A);
3224 }
3225
2741 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3226 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2742 { 3227 {
2743 WL w_ = fs_hash [slot].head; 3228 WL w_ = fs_hash [slot].head;
2744 fs_hash [slot].head = 0; 3229 fs_hash [slot].head = 0;
2745 3230
2746 while (w_) 3231 while (w_)
… …
2751 w->wd = -1; 3236 w->wd = -1;
2752 3237
2753 if (fs_fd >= 0) 3238 if (fs_fd >= 0)
2754 infy_add (EV_A_ w); /* re-add, no matter what */ 3239 infy_add (EV_A_ w); /* re-add, no matter what */
2755 else 3240 else
3241 {
3242 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3243 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2756 ev_timer_again (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3246 }
2757 } 3247 }
2758 } 3248 }
2759} 3249}
2760 3250
2761#endif 3251#endif
… …
2778static void noinline 3268static void noinline
2779stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3269stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2780{ 3270{
2781 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2782 3272
2783 /* we copy this here each the time so that */ 3273 ev_statdata prev = w->attr;
2784 /* prev has the old value when the callback gets invoked */
2785 w->prev = w->attr;
2786 ev_stat_stat (EV_A_ w); 3274 ev_stat_stat (EV_A_ w);
2787 3275
2788 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3276 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2789 if ( 3277 if (
2790 w->prev.st_dev != w->attr.st_dev 3278 prev.st_dev != w->attr.st_dev
2791 || w->prev.st_ino != w->attr.st_ino 3279 || prev.st_ino != w->attr.st_ino
2792 || w->prev.st_mode != w->attr.st_mode 3280 || prev.st_mode != w->attr.st_mode
2793 || w->prev.st_nlink != w->attr.st_nlink 3281 || prev.st_nlink != w->attr.st_nlink
2794 || w->prev.st_uid != w->attr.st_uid 3282 || prev.st_uid != w->attr.st_uid
2795 || w->prev.st_gid != w->attr.st_gid 3283 || prev.st_gid != w->attr.st_gid
2796 || w->prev.st_rdev != w->attr.st_rdev 3284 || prev.st_rdev != w->attr.st_rdev
2797 || w->prev.st_size != w->attr.st_size 3285 || prev.st_size != w->attr.st_size
2798 || w->prev.st_atime != w->attr.st_atime 3286 || prev.st_atime != w->attr.st_atime
2799 || w->prev.st_mtime != w->attr.st_mtime 3287 || prev.st_mtime != w->attr.st_mtime
2800 || w->prev.st_ctime != w->attr.st_ctime 3288 || prev.st_ctime != w->attr.st_ctime
2801 ) { 3289 ) {
3290 /* we only update w->prev on actual differences */
3291 /* in case we test more often than invoke the callback, */
3292 /* to ensure that prev is always different to attr */
3293 w->prev = prev;
3294
2802 #if EV_USE_INOTIFY 3295 #if EV_USE_INOTIFY
2803 if (fs_fd >= 0) 3296 if (fs_fd >= 0)
2804 { 3297 {
2805 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2806 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
… …
2831 3324
2832 if (fs_fd >= 0) 3325 if (fs_fd >= 0)
2833 infy_add (EV_A_ w); 3326 infy_add (EV_A_ w);
2834 else 3327 else
2835#endif 3328#endif
3329 {
2836 ev_timer_again (EV_A_ &w->timer); 3330 ev_timer_again (EV_A_ &w->timer);
3331 ev_unref (EV_A);
3332 }
2837 3333
2838 ev_start (EV_A_ (W)w, 1); 3334 ev_start (EV_A_ (W)w, 1);
2839 3335
2840 EV_FREQUENT_CHECK; 3336 EV_FREQUENT_CHECK;
2841} 3337}
… …
2850 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2851 3347
2852#if EV_USE_INOTIFY 3348#if EV_USE_INOTIFY
2853 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2854#endif 3350#endif
3351
3352 if (ev_is_active (&w->timer))
3353 {
3354 ev_ref (EV_A);
2855 ev_timer_stop (EV_A_ &w->timer); 3355 ev_timer_stop (EV_A_ &w->timer);
3356 }
2856 3357
2857 ev_stop (EV_A_ (W)w); 3358 ev_stop (EV_A_ (W)w);
2858 3359
2859 EV_FREQUENT_CHECK; 3360 EV_FREQUENT_CHECK;
2860} 3361}
… …
2905 3406
2906 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
2907} 3408}
2908#endif 3409#endif
2909 3410
3411#if EV_PREPARE_ENABLE
2910void 3412void
2911ev_prepare_start (EV_P_ ev_prepare *w) 3413ev_prepare_start (EV_P_ ev_prepare *w)
2912{ 3414{
2913 if (expect_false (ev_is_active (w))) 3415 if (expect_false (ev_is_active (w)))
2914 return; 3416 return;
… …
2940 3442
2941 ev_stop (EV_A_ (W)w); 3443 ev_stop (EV_A_ (W)w);
2942 3444
2943 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2944} 3446}
3447#endif
2945 3448
3449#if EV_CHECK_ENABLE
2946void 3450void
2947ev_check_start (EV_P_ ev_check *w) 3451ev_check_start (EV_P_ ev_check *w)
2948{ 3452{
2949 if (expect_false (ev_is_active (w))) 3453 if (expect_false (ev_is_active (w)))
2950 return; 3454 return;
… …
2976 3480
2977 ev_stop (EV_A_ (W)w); 3481 ev_stop (EV_A_ (W)w);
2978 3482
2979 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
2980} 3484}
3485#endif
2981 3486
2982#if EV_EMBED_ENABLE 3487#if EV_EMBED_ENABLE
2983void noinline 3488void noinline
2984ev_embed_sweep (EV_P_ ev_embed *w) 3489ev_embed_sweep (EV_P_ ev_embed *w)
2985{ 3490{
2986 ev_loop (w->other, EVLOOP_NONBLOCK); 3491 ev_run (w->other, EVRUN_NOWAIT);
2987} 3492}
2988 3493
2989static void 3494static void
2990embed_io_cb (EV_P_ ev_io *io, int revents) 3495embed_io_cb (EV_P_ ev_io *io, int revents)
2991{ 3496{
2992 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3497 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2993 3498
2994 if (ev_cb (w)) 3499 if (ev_cb (w))
2995 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3500 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2996 else 3501 else
2997 ev_loop (w->other, EVLOOP_NONBLOCK); 3502 ev_run (w->other, EVRUN_NOWAIT);
2998} 3503}
2999 3504
3000static void 3505static void
3001embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3506embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3002{ 3507{
3003 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3508 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3004 3509
3005 { 3510 {
3006 struct ev_loop *loop = w->other; 3511 EV_P = w->other;
3007 3512
3008 while (fdchangecnt) 3513 while (fdchangecnt)
3009 { 3514 {
3010 fd_reify (EV_A); 3515 fd_reify (EV_A);
3011 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3516 ev_run (EV_A_ EVRUN_NOWAIT);
3012 } 3517 }
3013 } 3518 }
3014} 3519}
3015 3520
3016static void 3521static void
… …
3019 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3524 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3020 3525
3021 ev_embed_stop (EV_A_ w); 3526 ev_embed_stop (EV_A_ w);
3022 3527
3023 { 3528 {
3024 struct ev_loop *loop = w->other; 3529 EV_P = w->other;
3025 3530
3026 ev_loop_fork (EV_A); 3531 ev_loop_fork (EV_A);
3027 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3532 ev_run (EV_A_ EVRUN_NOWAIT);
3028 } 3533 }
3029 3534
3030 ev_embed_start (EV_A_ w); 3535 ev_embed_start (EV_A_ w);
3031} 3536}
3032 3537
… …
3043{ 3548{
3044 if (expect_false (ev_is_active (w))) 3549 if (expect_false (ev_is_active (w)))
3045 return; 3550 return;
3046 3551
3047 { 3552 {
3048 struct ev_loop *loop = w->other; 3553 EV_P = w->other;
3049 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3050 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3555 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3051 } 3556 }
3052 3557
3053 EV_FREQUENT_CHECK; 3558 EV_FREQUENT_CHECK;
… …
3080 3585
3081 ev_io_stop (EV_A_ &w->io); 3586 ev_io_stop (EV_A_ &w->io);
3082 ev_prepare_stop (EV_A_ &w->prepare); 3587 ev_prepare_stop (EV_A_ &w->prepare);
3083 ev_fork_stop (EV_A_ &w->fork); 3588 ev_fork_stop (EV_A_ &w->fork);
3084 3589
3590 ev_stop (EV_A_ (W)w);
3591
3085 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
3086} 3593}
3087#endif 3594#endif
3088 3595
3089#if EV_FORK_ENABLE 3596#if EV_FORK_ENABLE
… …
3122 3629
3123 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
3124} 3631}
3125#endif 3632#endif
3126 3633
3127#if EV_ASYNC_ENABLE 3634#if EV_CLEANUP_ENABLE
3128void 3635void
3129ev_async_start (EV_P_ ev_async *w) 3636ev_cleanup_start (EV_P_ ev_cleanup *w)
3130{ 3637{
3131 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
3132 return; 3639 return;
3640
3641 EV_FREQUENT_CHECK;
3642
3643 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3645 cleanups [cleanupcnt - 1] = w;
3646
3647 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK;
3650}
3651
3652void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w)
3654{
3655 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w)))
3657 return;
3658
3659 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A);
3661
3662 {
3663 int active = ev_active (w);
3664
3665 cleanups [active - 1] = cleanups [--cleanupcnt];
3666 ev_active (cleanups [active - 1]) = active;
3667 }
3668
3669 ev_stop (EV_A_ (W)w);
3670
3671 EV_FREQUENT_CHECK;
3672}
3673#endif
3674
3675#if EV_ASYNC_ENABLE
3676void
3677ev_async_start (EV_P_ ev_async *w)
3678{
3679 if (expect_false (ev_is_active (w)))
3680 return;
3681
3682 w->sent = 0;
3133 3683
3134 evpipe_init (EV_A); 3684 evpipe_init (EV_A);
3135 3685
3136 EV_FREQUENT_CHECK; 3686 EV_FREQUENT_CHECK;
3137 3687
… …
3165 3715
3166void 3716void
3167ev_async_send (EV_P_ ev_async *w) 3717ev_async_send (EV_P_ ev_async *w)
3168{ 3718{
3169 w->sent = 1; 3719 w->sent = 1;
3170 evpipe_write (EV_A_ &gotasync); 3720 evpipe_write (EV_A_ &async_pending);
3171} 3721}
3172#endif 3722#endif
3173 3723
3174/*****************************************************************************/ 3724/*****************************************************************************/
3175 3725
… …
3215{ 3765{
3216 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3217 3767
3218 if (expect_false (!once)) 3768 if (expect_false (!once))
3219 { 3769 {
3220 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3221 return; 3771 return;
3222 } 3772 }
3223 3773
3224 once->cb = cb; 3774 once->cb = cb;
3225 once->arg = arg; 3775 once->arg = arg;
… …
3312 if (types & EV_ASYNC) 3862 if (types & EV_ASYNC)
3313 for (i = asynccnt; i--; ) 3863 for (i = asynccnt; i--; )
3314 cb (EV_A_ EV_ASYNC, asyncs [i]); 3864 cb (EV_A_ EV_ASYNC, asyncs [i]);
3315#endif 3865#endif
3316 3866
3867#if EV_PREPARE_ENABLE
3317 if (types & EV_PREPARE) 3868 if (types & EV_PREPARE)
3318 for (i = preparecnt; i--; ) 3869 for (i = preparecnt; i--; )
3319#if EV_EMBED_ENABLE 3870# if EV_EMBED_ENABLE
3320 if (ev_cb (prepares [i]) != embed_prepare_cb) 3871 if (ev_cb (prepares [i]) != embed_prepare_cb)
3321#endif 3872# endif
3322 cb (EV_A_ EV_PREPARE, prepares [i]); 3873 cb (EV_A_ EV_PREPARE, prepares [i]);
3874#endif
3323 3875
3876#if EV_CHECK_ENABLE
3324 if (types & EV_CHECK) 3877 if (types & EV_CHECK)
3325 for (i = checkcnt; i--; ) 3878 for (i = checkcnt; i--; )
3326 cb (EV_A_ EV_CHECK, checks [i]); 3879 cb (EV_A_ EV_CHECK, checks [i]);
3880#endif
3327 3881
3882#if EV_SIGNAL_ENABLE
3328 if (types & EV_SIGNAL) 3883 if (types & EV_SIGNAL)
3329 for (i = 0; i < signalmax; ++i) 3884 for (i = 0; i < EV_NSIG - 1; ++i)
3330 for (wl = signals [i].head; wl; ) 3885 for (wl = signals [i].head; wl; )
3331 { 3886 {
3332 wn = wl->next; 3887 wn = wl->next;
3333 cb (EV_A_ EV_SIGNAL, wl); 3888 cb (EV_A_ EV_SIGNAL, wl);
3334 wl = wn; 3889 wl = wn;
3335 } 3890 }
3891#endif
3336 3892
3893#if EV_CHILD_ENABLE
3337 if (types & EV_CHILD) 3894 if (types & EV_CHILD)
3338 for (i = EV_PID_HASHSIZE; i--; ) 3895 for (i = (EV_PID_HASHSIZE); i--; )
3339 for (wl = childs [i]; wl; ) 3896 for (wl = childs [i]; wl; )
3340 { 3897 {
3341 wn = wl->next; 3898 wn = wl->next;
3342 cb (EV_A_ EV_CHILD, wl); 3899 cb (EV_A_ EV_CHILD, wl);
3343 wl = wn; 3900 wl = wn;
3344 } 3901 }
3902#endif
3345/* EV_STAT 0x00001000 /* stat data changed */ 3903/* EV_STAT 0x00001000 /* stat data changed */
3346/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3904/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3347} 3905}
3348#endif 3906#endif
3349 3907
3350#if EV_MULTIPLICITY 3908#if EV_MULTIPLICITY
3351 #include "ev_wrap.h" 3909 #include "ev_wrap.h"
3352#endif 3910#endif
3353 3911
3354#ifdef __cplusplus 3912EV_CPP(})
3355}
3356#endif
3357 3913

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