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Comparing libev/ev.c (file contents):
Revision 1.281 by root, Mon Mar 16 21:15:06 2009 UTC vs.
Revision 1.370 by root, Sun Jan 30 19:05:41 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
661/* file descriptor info structure */
483typedef struct 662typedef struct
484{ 663{
485 WL head; 664 WL head;
486 unsigned char events; 665 unsigned char events; /* the events watched for */
487 unsigned char reify; 666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 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 */
489 unsigned char unused; 668 unsigned char unused;
490#if EV_USE_EPOLL 669#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 670 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 671#endif
493#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 673 SOCKET handle;
495#endif 674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
677#endif
496} ANFD; 678} ANFD;
497 679
680/* stores the pending event set for a given watcher */
498typedef struct 681typedef struct
499{ 682{
500 W w; 683 W w;
501 int events; 684 int events; /* the pending event set for the given watcher */
502} ANPENDING; 685} ANPENDING;
503 686
504#if EV_USE_INOTIFY 687#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 688/* hash table entry per inotify-id */
506typedef struct 689typedef struct
… …
509} ANFS; 692} ANFS;
510#endif 693#endif
511 694
512/* Heap Entry */ 695/* Heap Entry */
513#if EV_HEAP_CACHE_AT 696#if EV_HEAP_CACHE_AT
697 /* a heap element */
514 typedef struct { 698 typedef struct {
515 ev_tstamp at; 699 ev_tstamp at;
516 WT w; 700 WT w;
517 } ANHE; 701 } ANHE;
518 702
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 703 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 704 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 705 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 706#else
707 /* a heap element */
523 typedef WT ANHE; 708 typedef WT ANHE;
524 709
525 #define ANHE_w(he) (he) 710 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 711 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 712 #define ANHE_at_cache(he)
… …
551 736
552 static int ev_default_loop_ptr; 737 static int ev_default_loop_ptr;
553 738
554#endif 739#endif
555 740
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
556/*****************************************************************************/ 753/*****************************************************************************/
557 754
755#ifndef EV_HAVE_EV_TIME
558ev_tstamp 756ev_tstamp
559ev_time (void) 757ev_time (void)
560{ 758{
561#if EV_USE_REALTIME 759#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 760 if (expect_true (have_realtime))
… …
569 767
570 struct timeval tv; 768 struct timeval tv;
571 gettimeofday (&tv, 0); 769 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 770 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 771}
772#endif
574 773
575ev_tstamp inline_size 774inline_size ev_tstamp
576get_clock (void) 775get_clock (void)
577{ 776{
578#if EV_USE_MONOTONIC 777#if EV_USE_MONOTONIC
579 if (expect_true (have_monotonic)) 778 if (expect_true (have_monotonic))
580 { 779 {
… …
601 if (delay > 0.) 800 if (delay > 0.)
602 { 801 {
603#if EV_USE_NANOSLEEP 802#if EV_USE_NANOSLEEP
604 struct timespec ts; 803 struct timespec ts;
605 804
606 ts.tv_sec = (time_t)delay; 805 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 806 nanosleep (&ts, 0);
610#elif defined(_WIN32) 807#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 808 Sleep ((unsigned long)(delay * 1e3));
612#else 809#else
613 struct timeval tv; 810 struct timeval tv;
614 811
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* 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 */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 813 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 814 /* by older ones */
815 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 816 select (0, 0, 0, 0, &tv);
622#endif 817#endif
623 } 818 }
624} 819}
625 820
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
626/*****************************************************************************/ 829/*****************************************************************************/
627 830
628#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 */
629 832
630int inline_size 833/* find a suitable new size for the given array, */
834/* hopefully by rounding to a nice-to-malloc size */
835inline_size int
631array_nextsize (int elem, int cur, int cnt) 836array_nextsize (int elem, int cur, int cnt)
632{ 837{
633 int ncur = cur + 1; 838 int ncur = cur + 1;
634 839
635 do 840 do
… …
680#define array_free(stem, idx) \ 885#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 887
683/*****************************************************************************/ 888/*****************************************************************************/
684 889
890/* dummy callback for pending events */
891static void noinline
892pendingcb (EV_P_ ev_prepare *w, int revents)
893{
894}
895
685void noinline 896void noinline
686ev_feed_event (EV_P_ void *w, int revents) 897ev_feed_event (EV_P_ void *w, int revents)
687{ 898{
688 W w_ = (W)w; 899 W w_ = (W)w;
689 int pri = ABSPRI (w_); 900 int pri = ABSPRI (w_);
… …
697 pendings [pri][w_->pending - 1].w = w_; 908 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 909 pendings [pri][w_->pending - 1].events = revents;
699 } 910 }
700} 911}
701 912
702void inline_speed 913inline_speed void
914feed_reverse (EV_P_ W w)
915{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
917 rfeeds [rfeedcnt++] = w;
918}
919
920inline_size void
921feed_reverse_done (EV_P_ int revents)
922{
923 do
924 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
925 while (rfeedcnt);
926}
927
928inline_speed void
703queue_events (EV_P_ W *events, int eventcnt, int type) 929queue_events (EV_P_ W *events, int eventcnt, int type)
704{ 930{
705 int i; 931 int i;
706 932
707 for (i = 0; i < eventcnt; ++i) 933 for (i = 0; i < eventcnt; ++i)
708 ev_feed_event (EV_A_ events [i], type); 934 ev_feed_event (EV_A_ events [i], type);
709} 935}
710 936
711/*****************************************************************************/ 937/*****************************************************************************/
712 938
713void inline_speed 939inline_speed void
714fd_event (EV_P_ int fd, int revents) 940fd_event_nocheck (EV_P_ int fd, int revents)
715{ 941{
716 ANFD *anfd = anfds + fd; 942 ANFD *anfd = anfds + fd;
717 ev_io *w; 943 ev_io *w;
718 944
719 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)
… …
723 if (ev) 949 if (ev)
724 ev_feed_event (EV_A_ (W)w, ev); 950 ev_feed_event (EV_A_ (W)w, ev);
725 } 951 }
726} 952}
727 953
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
728void 965void
729ev_feed_fd_event (EV_P_ int fd, int revents) 966ev_feed_fd_event (EV_P_ int fd, int revents)
730{ 967{
731 if (fd >= 0 && fd < anfdmax) 968 if (fd >= 0 && fd < anfdmax)
732 fd_event (EV_A_ fd, revents); 969 fd_event_nocheck (EV_A_ fd, revents);
733} 970}
734 971
735void inline_size 972/* make sure the external fd watch events are in-sync */
973/* with the kernel/libev internal state */
974inline_size void
736fd_reify (EV_P) 975fd_reify (EV_P)
737{ 976{
738 int i; 977 int i;
739 978
740 for (i = 0; i < fdchangecnt; ++i) 979 for (i = 0; i < fdchangecnt; ++i)
741 { 980 {
742 int fd = fdchanges [i]; 981 int fd = fdchanges [i];
743 ANFD *anfd = anfds + fd; 982 ANFD *anfd = anfds + fd;
744 ev_io *w; 983 ev_io *w;
745 984
746 unsigned char events = 0; 985 unsigned char o_events = anfd->events;
986 unsigned char o_reify = anfd->reify;
747 987
748 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 988 anfd->reify = 0;
749 events |= (unsigned char)w->events;
750 989
751#if EV_SELECT_IS_WINSOCKET 990#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
752 if (events) 991 if (o_reify & EV__IOFDSET)
753 { 992 {
754 unsigned long arg; 993 unsigned long arg;
755 #ifdef EV_FD_TO_WIN32_HANDLE
756 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 994 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
757 #else
758 anfd->handle = _get_osfhandle (fd);
759 #endif
760 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 995 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
996 printf ("oi %d %x\n", fd, anfd->handle);//D
761 } 997 }
762#endif 998#endif
763 999
1000 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
764 { 1001 {
765 unsigned char o_events = anfd->events;
766 unsigned char o_reify = anfd->reify;
767
768 anfd->reify = 0;
769 anfd->events = events; 1002 anfd->events = 0;
770 1003
771 if (o_events != events || o_reify & EV__IOFDSET) 1004 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1005 anfd->events |= (unsigned char)w->events;
1006
1007 if (o_events != anfd->events)
1008 o_reify = EV__IOFDSET; /* actually |= */
1009 }
1010
1011 if (o_reify & EV__IOFDSET)
772 backend_modify (EV_A_ fd, o_events, events); 1012 backend_modify (EV_A_ fd, o_events, anfd->events);
773 }
774 } 1013 }
775 1014
776 fdchangecnt = 0; 1015 fdchangecnt = 0;
777} 1016}
778 1017
779void inline_size 1018/* something about the given fd changed */
1019inline_size void
780fd_change (EV_P_ int fd, int flags) 1020fd_change (EV_P_ int fd, int flags)
781{ 1021{
782 unsigned char reify = anfds [fd].reify; 1022 unsigned char reify = anfds [fd].reify;
783 anfds [fd].reify |= flags; 1023 anfds [fd].reify |= flags;
784 1024
… …
788 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1028 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789 fdchanges [fdchangecnt - 1] = fd; 1029 fdchanges [fdchangecnt - 1] = fd;
790 } 1030 }
791} 1031}
792 1032
793void inline_speed 1033/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1034inline_speed void
794fd_kill (EV_P_ int fd) 1035fd_kill (EV_P_ int fd)
795{ 1036{
796 ev_io *w; 1037 ev_io *w;
797 1038
798 while ((w = (ev_io *)anfds [fd].head)) 1039 while ((w = (ev_io *)anfds [fd].head))
… …
800 ev_io_stop (EV_A_ w); 1041 ev_io_stop (EV_A_ w);
801 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1042 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
802 } 1043 }
803} 1044}
804 1045
805int inline_size 1046/* check whether the given fd is actually valid, for error recovery */
1047inline_size int
806fd_valid (int fd) 1048fd_valid (int fd)
807{ 1049{
808#ifdef _WIN32 1050#ifdef _WIN32
809 return _get_osfhandle (fd) != -1; 1051 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
810#else 1052#else
811 return fcntl (fd, F_GETFD) != -1; 1053 return fcntl (fd, F_GETFD) != -1;
812#endif 1054#endif
813} 1055}
814 1056
… …
832 1074
833 for (fd = anfdmax; fd--; ) 1075 for (fd = anfdmax; fd--; )
834 if (anfds [fd].events) 1076 if (anfds [fd].events)
835 { 1077 {
836 fd_kill (EV_A_ fd); 1078 fd_kill (EV_A_ fd);
837 return; 1079 break;
838 } 1080 }
839} 1081}
840 1082
841/* usually called after fork if backend needs to re-arm all fds from scratch */ 1083/* usually called after fork if backend needs to re-arm all fds from scratch */
842static void noinline 1084static void noinline
… …
847 for (fd = 0; fd < anfdmax; ++fd) 1089 for (fd = 0; fd < anfdmax; ++fd)
848 if (anfds [fd].events) 1090 if (anfds [fd].events)
849 { 1091 {
850 anfds [fd].events = 0; 1092 anfds [fd].events = 0;
851 anfds [fd].emask = 0; 1093 anfds [fd].emask = 0;
852 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1094 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853 } 1095 }
854} 1096}
855 1097
1098/* used to prepare libev internal fd's */
1099/* this is not fork-safe */
1100inline_speed void
1101fd_intern (int fd)
1102{
1103#ifdef _WIN32
1104 unsigned long arg = 1;
1105 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1106#else
1107 fcntl (fd, F_SETFD, FD_CLOEXEC);
1108 fcntl (fd, F_SETFL, O_NONBLOCK);
1109#endif
1110}
1111
856/*****************************************************************************/ 1112/*****************************************************************************/
857 1113
858/* 1114/*
859 * the heap functions want a real array index. array index 0 uis guaranteed to not 1115 * the heap functions want a real array index. array index 0 is guaranteed to not
860 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1116 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
861 * the branching factor of the d-tree. 1117 * the branching factor of the d-tree.
862 */ 1118 */
863 1119
864/* 1120/*
… …
873#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1129#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1130#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875#define UPHEAP_DONE(p,k) ((p) == (k)) 1131#define UPHEAP_DONE(p,k) ((p) == (k))
876 1132
877/* away from the root */ 1133/* away from the root */
878void inline_speed 1134inline_speed void
879downheap (ANHE *heap, int N, int k) 1135downheap (ANHE *heap, int N, int k)
880{ 1136{
881 ANHE he = heap [k]; 1137 ANHE he = heap [k];
882 ANHE *E = heap + N + HEAP0; 1138 ANHE *E = heap + N + HEAP0;
883 1139
… …
923#define HEAP0 1 1179#define HEAP0 1
924#define HPARENT(k) ((k) >> 1) 1180#define HPARENT(k) ((k) >> 1)
925#define UPHEAP_DONE(p,k) (!(p)) 1181#define UPHEAP_DONE(p,k) (!(p))
926 1182
927/* away from the root */ 1183/* away from the root */
928void inline_speed 1184inline_speed void
929downheap (ANHE *heap, int N, int k) 1185downheap (ANHE *heap, int N, int k)
930{ 1186{
931 ANHE he = heap [k]; 1187 ANHE he = heap [k];
932 1188
933 for (;;) 1189 for (;;)
934 { 1190 {
935 int c = k << 1; 1191 int c = k << 1;
936 1192
937 if (c > N + HEAP0 - 1) 1193 if (c >= N + HEAP0)
938 break; 1194 break;
939 1195
940 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1196 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
941 ? 1 : 0; 1197 ? 1 : 0;
942 1198
… …
953 ev_active (ANHE_w (he)) = k; 1209 ev_active (ANHE_w (he)) = k;
954} 1210}
955#endif 1211#endif
956 1212
957/* towards the root */ 1213/* towards the root */
958void inline_speed 1214inline_speed void
959upheap (ANHE *heap, int k) 1215upheap (ANHE *heap, int k)
960{ 1216{
961 ANHE he = heap [k]; 1217 ANHE he = heap [k];
962 1218
963 for (;;) 1219 for (;;)
… …
974 1230
975 heap [k] = he; 1231 heap [k] = he;
976 ev_active (ANHE_w (he)) = k; 1232 ev_active (ANHE_w (he)) = k;
977} 1233}
978 1234
979void inline_size 1235/* move an element suitably so it is in a correct place */
1236inline_size void
980adjustheap (ANHE *heap, int N, int k) 1237adjustheap (ANHE *heap, int N, int k)
981{ 1238{
982 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1239 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
983 upheap (heap, k); 1240 upheap (heap, k);
984 else 1241 else
985 downheap (heap, N, k); 1242 downheap (heap, N, k);
986} 1243}
987 1244
988/* rebuild the heap: this function is used only once and executed rarely */ 1245/* rebuild the heap: this function is used only once and executed rarely */
989void inline_size 1246inline_size void
990reheap (ANHE *heap, int N) 1247reheap (ANHE *heap, int N)
991{ 1248{
992 int i; 1249 int i;
993 1250
994 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1251 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
997 upheap (heap, i + HEAP0); 1254 upheap (heap, i + HEAP0);
998} 1255}
999 1256
1000/*****************************************************************************/ 1257/*****************************************************************************/
1001 1258
1259/* associate signal watchers to a signal signal */
1002typedef struct 1260typedef struct
1003{ 1261{
1262 EV_ATOMIC_T pending;
1263#if EV_MULTIPLICITY
1264 EV_P;
1265#endif
1004 WL head; 1266 WL head;
1005 EV_ATOMIC_T gotsig;
1006} ANSIG; 1267} ANSIG;
1007 1268
1008static ANSIG *signals; 1269static ANSIG signals [EV_NSIG - 1];
1009static int signalmax;
1010
1011static EV_ATOMIC_T gotsig;
1012 1270
1013/*****************************************************************************/ 1271/*****************************************************************************/
1014 1272
1015void inline_speed 1273#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1016fd_intern (int fd)
1017{
1018#ifdef _WIN32
1019 unsigned long arg = 1;
1020 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1021#else
1022 fcntl (fd, F_SETFD, FD_CLOEXEC);
1023 fcntl (fd, F_SETFL, O_NONBLOCK);
1024#endif
1025}
1026 1274
1027static void noinline 1275static void noinline
1028evpipe_init (EV_P) 1276evpipe_init (EV_P)
1029{ 1277{
1030 if (!ev_is_active (&pipeev)) 1278 if (!ev_is_active (&pipe_w))
1031 { 1279 {
1032#if EV_USE_EVENTFD 1280# if EV_USE_EVENTFD
1281 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1282 if (evfd < 0 && errno == EINVAL)
1033 if ((evfd = eventfd (0, 0)) >= 0) 1283 evfd = eventfd (0, 0);
1284
1285 if (evfd >= 0)
1034 { 1286 {
1035 evpipe [0] = -1; 1287 evpipe [0] = -1;
1036 fd_intern (evfd); 1288 fd_intern (evfd); /* doing it twice doesn't hurt */
1037 ev_io_set (&pipeev, evfd, EV_READ); 1289 ev_io_set (&pipe_w, evfd, EV_READ);
1038 } 1290 }
1039 else 1291 else
1040#endif 1292# endif
1041 { 1293 {
1042 while (pipe (evpipe)) 1294 while (pipe (evpipe))
1043 ev_syserr ("(libev) error creating signal/async pipe"); 1295 ev_syserr ("(libev) error creating signal/async pipe");
1044 1296
1045 fd_intern (evpipe [0]); 1297 fd_intern (evpipe [0]);
1046 fd_intern (evpipe [1]); 1298 fd_intern (evpipe [1]);
1047 ev_io_set (&pipeev, evpipe [0], EV_READ); 1299 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048 } 1300 }
1049 1301
1050 ev_io_start (EV_A_ &pipeev); 1302 ev_io_start (EV_A_ &pipe_w);
1051 ev_unref (EV_A); /* watcher should not keep loop alive */ 1303 ev_unref (EV_A); /* watcher should not keep loop alive */
1052 } 1304 }
1053} 1305}
1054 1306
1055void inline_size 1307inline_size void
1056evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1308evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057{ 1309{
1058 if (!*flag) 1310 if (!*flag)
1059 { 1311 {
1060 int old_errno = errno; /* save errno because write might clobber it */ 1312 int old_errno = errno; /* save errno because write might clobber it */
1313 char dummy;
1061 1314
1062 *flag = 1; 1315 *flag = 1;
1063 1316
1064#if EV_USE_EVENTFD 1317#if EV_USE_EVENTFD
1065 if (evfd >= 0) 1318 if (evfd >= 0)
… …
1067 uint64_t counter = 1; 1320 uint64_t counter = 1;
1068 write (evfd, &counter, sizeof (uint64_t)); 1321 write (evfd, &counter, sizeof (uint64_t));
1069 } 1322 }
1070 else 1323 else
1071#endif 1324#endif
1325 /* win32 people keep sending patches that change this write() to send() */
1326 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1327 /* so when you think this write should be a send instead, please find out */
1328 /* where your send() is from - it's definitely not the microsoft send, and */
1329 /* tell me. thank you. */
1072 write (evpipe [1], &old_errno, 1); 1330 write (evpipe [1], &dummy, 1);
1073 1331
1074 errno = old_errno; 1332 errno = old_errno;
1075 } 1333 }
1076} 1334}
1077 1335
1336/* called whenever the libev signal pipe */
1337/* got some events (signal, async) */
1078static void 1338static void
1079pipecb (EV_P_ ev_io *iow, int revents) 1339pipecb (EV_P_ ev_io *iow, int revents)
1080{ 1340{
1341 int i;
1342
1081#if EV_USE_EVENTFD 1343#if EV_USE_EVENTFD
1082 if (evfd >= 0) 1344 if (evfd >= 0)
1083 { 1345 {
1084 uint64_t counter; 1346 uint64_t counter;
1085 read (evfd, &counter, sizeof (uint64_t)); 1347 read (evfd, &counter, sizeof (uint64_t));
1086 } 1348 }
1087 else 1349 else
1088#endif 1350#endif
1089 { 1351 {
1090 char dummy; 1352 char dummy;
1353 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1091 read (evpipe [0], &dummy, 1); 1354 read (evpipe [0], &dummy, 1);
1092 } 1355 }
1093 1356
1094 if (gotsig && ev_is_default_loop (EV_A)) 1357#if EV_SIGNAL_ENABLE
1358 if (sig_pending)
1095 { 1359 {
1096 int signum; 1360 sig_pending = 0;
1097 gotsig = 0;
1098 1361
1099 for (signum = signalmax; signum--; ) 1362 for (i = EV_NSIG - 1; i--; )
1100 if (signals [signum].gotsig) 1363 if (expect_false (signals [i].pending))
1101 ev_feed_signal_event (EV_A_ signum + 1); 1364 ev_feed_signal_event (EV_A_ i + 1);
1102 } 1365 }
1366#endif
1103 1367
1104#if EV_ASYNC_ENABLE 1368#if EV_ASYNC_ENABLE
1105 if (gotasync) 1369 if (async_pending)
1106 { 1370 {
1107 int i; 1371 async_pending = 0;
1108 gotasync = 0;
1109 1372
1110 for (i = asynccnt; i--; ) 1373 for (i = asynccnt; i--; )
1111 if (asyncs [i]->sent) 1374 if (asyncs [i]->sent)
1112 { 1375 {
1113 asyncs [i]->sent = 0; 1376 asyncs [i]->sent = 0;
… …
1117#endif 1380#endif
1118} 1381}
1119 1382
1120/*****************************************************************************/ 1383/*****************************************************************************/
1121 1384
1385void
1386ev_feed_signal (int signum)
1387{
1388#if EV_MULTIPLICITY
1389 EV_P = signals [signum - 1].loop;
1390
1391 if (!EV_A)
1392 return;
1393#endif
1394
1395 signals [signum - 1].pending = 1;
1396 evpipe_write (EV_A_ &sig_pending);
1397}
1398
1122static void 1399static void
1123ev_sighandler (int signum) 1400ev_sighandler (int signum)
1124{ 1401{
1125#if EV_MULTIPLICITY
1126 struct ev_loop *loop = &default_loop_struct;
1127#endif
1128
1129#if _WIN32 1402#ifdef _WIN32
1130 signal (signum, ev_sighandler); 1403 signal (signum, ev_sighandler);
1131#endif 1404#endif
1132 1405
1133 signals [signum - 1].gotsig = 1; 1406 ev_feed_signal (signum);
1134 evpipe_write (EV_A_ &gotsig);
1135} 1407}
1136 1408
1137void noinline 1409void noinline
1138ev_feed_signal_event (EV_P_ int signum) 1410ev_feed_signal_event (EV_P_ int signum)
1139{ 1411{
1140 WL w; 1412 WL w;
1141 1413
1414 if (expect_false (signum <= 0 || signum > EV_NSIG))
1415 return;
1416
1417 --signum;
1418
1142#if EV_MULTIPLICITY 1419#if EV_MULTIPLICITY
1143 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1420 /* it is permissible to try to feed a signal to the wrong loop */
1144#endif 1421 /* or, likely more useful, feeding a signal nobody is waiting for */
1145 1422
1146 --signum; 1423 if (expect_false (signals [signum].loop != EV_A))
1147
1148 if (signum < 0 || signum >= signalmax)
1149 return; 1424 return;
1425#endif
1150 1426
1151 signals [signum].gotsig = 0; 1427 signals [signum].pending = 0;
1152 1428
1153 for (w = signals [signum].head; w; w = w->next) 1429 for (w = signals [signum].head; w; w = w->next)
1154 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1430 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155} 1431}
1156 1432
1433#if EV_USE_SIGNALFD
1434static void
1435sigfdcb (EV_P_ ev_io *iow, int revents)
1436{
1437 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1438
1439 for (;;)
1440 {
1441 ssize_t res = read (sigfd, si, sizeof (si));
1442
1443 /* not ISO-C, as res might be -1, but works with SuS */
1444 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1445 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1446
1447 if (res < (ssize_t)sizeof (si))
1448 break;
1449 }
1450}
1451#endif
1452
1453#endif
1454
1157/*****************************************************************************/ 1455/*****************************************************************************/
1158 1456
1457#if EV_CHILD_ENABLE
1159static WL childs [EV_PID_HASHSIZE]; 1458static WL childs [EV_PID_HASHSIZE];
1160
1161#ifndef _WIN32
1162 1459
1163static ev_signal childev; 1460static ev_signal childev;
1164 1461
1165#ifndef WIFCONTINUED 1462#ifndef WIFCONTINUED
1166# define WIFCONTINUED(status) 0 1463# define WIFCONTINUED(status) 0
1167#endif 1464#endif
1168 1465
1169void inline_speed 1466/* handle a single child status event */
1467inline_speed void
1170child_reap (EV_P_ int chain, int pid, int status) 1468child_reap (EV_P_ int chain, int pid, int status)
1171{ 1469{
1172 ev_child *w; 1470 ev_child *w;
1173 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1471 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174 1472
1175 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1473 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1176 { 1474 {
1177 if ((w->pid == pid || !w->pid) 1475 if ((w->pid == pid || !w->pid)
1178 && (!traced || (w->flags & 1))) 1476 && (!traced || (w->flags & 1)))
1179 { 1477 {
1180 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1478 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1187 1485
1188#ifndef WCONTINUED 1486#ifndef WCONTINUED
1189# define WCONTINUED 0 1487# define WCONTINUED 0
1190#endif 1488#endif
1191 1489
1490/* called on sigchld etc., calls waitpid */
1192static void 1491static void
1193childcb (EV_P_ ev_signal *sw, int revents) 1492childcb (EV_P_ ev_signal *sw, int revents)
1194{ 1493{
1195 int pid, status; 1494 int pid, status;
1196 1495
… …
1204 /* make sure we are called again until all children have been reaped */ 1503 /* make sure we are called again until all children have been reaped */
1205 /* we need to do it this way so that the callback gets called before we continue */ 1504 /* we need to do it this way so that the callback gets called before we continue */
1206 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1505 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1207 1506
1208 child_reap (EV_A_ pid, pid, status); 1507 child_reap (EV_A_ pid, pid, status);
1209 if (EV_PID_HASHSIZE > 1) 1508 if ((EV_PID_HASHSIZE) > 1)
1210 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1509 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1211} 1510}
1212 1511
1213#endif 1512#endif
1214 1513
1215/*****************************************************************************/ 1514/*****************************************************************************/
1216 1515
1516#if EV_USE_IOCP
1517# include "ev_iocp.c"
1518#endif
1217#if EV_USE_PORT 1519#if EV_USE_PORT
1218# include "ev_port.c" 1520# include "ev_port.c"
1219#endif 1521#endif
1220#if EV_USE_KQUEUE 1522#if EV_USE_KQUEUE
1221# include "ev_kqueue.c" 1523# include "ev_kqueue.c"
… …
1281#ifdef __APPLE__ 1583#ifdef __APPLE__
1282 /* only select works correctly on that "unix-certified" platform */ 1584 /* only select works correctly on that "unix-certified" platform */
1283 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1585 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1284 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1586 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1285#endif 1587#endif
1588#ifdef __FreeBSD__
1589 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1590#endif
1286 1591
1287 return flags; 1592 return flags;
1288} 1593}
1289 1594
1290unsigned int 1595unsigned int
1291ev_embeddable_backends (void) 1596ev_embeddable_backends (void)
1292{ 1597{
1293 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1598 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1294 1599
1295 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1600 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1296 /* please fix it and tell me how to detect the fix */ 1601 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1297 flags &= ~EVBACKEND_EPOLL; 1602 flags &= ~EVBACKEND_EPOLL;
1298 1603
1299 return flags; 1604 return flags;
1300} 1605}
1301 1606
1302unsigned int 1607unsigned int
1303ev_backend (EV_P) 1608ev_backend (EV_P)
1304{ 1609{
1305 return backend; 1610 return backend;
1306} 1611}
1307 1612
1613#if EV_FEATURE_API
1308unsigned int 1614unsigned int
1309ev_loop_count (EV_P) 1615ev_iteration (EV_P)
1310{ 1616{
1311 return loop_count; 1617 return loop_count;
1312} 1618}
1313 1619
1620unsigned int
1621ev_depth (EV_P)
1622{
1623 return loop_depth;
1624}
1625
1314void 1626void
1315ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1627ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316{ 1628{
1317 io_blocktime = interval; 1629 io_blocktime = interval;
1318} 1630}
… …
1321ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1633ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322{ 1634{
1323 timeout_blocktime = interval; 1635 timeout_blocktime = interval;
1324} 1636}
1325 1637
1638void
1639ev_set_userdata (EV_P_ void *data)
1640{
1641 userdata = data;
1642}
1643
1644void *
1645ev_userdata (EV_P)
1646{
1647 return userdata;
1648}
1649
1650void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1651{
1652 invoke_cb = invoke_pending_cb;
1653}
1654
1655void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1656{
1657 release_cb = release;
1658 acquire_cb = acquire;
1659}
1660#endif
1661
1662/* initialise a loop structure, must be zero-initialised */
1326static void noinline 1663static void noinline
1327loop_init (EV_P_ unsigned int flags) 1664loop_init (EV_P_ unsigned int flags)
1328{ 1665{
1329 if (!backend) 1666 if (!backend)
1330 { 1667 {
1668 origflags = flags;
1669
1331#if EV_USE_REALTIME 1670#if EV_USE_REALTIME
1332 if (!have_realtime) 1671 if (!have_realtime)
1333 { 1672 {
1334 struct timespec ts; 1673 struct timespec ts;
1335 1674
… …
1346 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1685 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347 have_monotonic = 1; 1686 have_monotonic = 1;
1348 } 1687 }
1349#endif 1688#endif
1350 1689
1690 /* pid check not overridable via env */
1691#ifndef _WIN32
1692 if (flags & EVFLAG_FORKCHECK)
1693 curpid = getpid ();
1694#endif
1695
1696 if (!(flags & EVFLAG_NOENV)
1697 && !enable_secure ()
1698 && getenv ("LIBEV_FLAGS"))
1699 flags = atoi (getenv ("LIBEV_FLAGS"));
1700
1351 ev_rt_now = ev_time (); 1701 ev_rt_now = ev_time ();
1352 mn_now = get_clock (); 1702 mn_now = get_clock ();
1353 now_floor = mn_now; 1703 now_floor = mn_now;
1354 rtmn_diff = ev_rt_now - mn_now; 1704 rtmn_diff = ev_rt_now - mn_now;
1705#if EV_FEATURE_API
1706 invoke_cb = ev_invoke_pending;
1707#endif
1355 1708
1356 io_blocktime = 0.; 1709 io_blocktime = 0.;
1357 timeout_blocktime = 0.; 1710 timeout_blocktime = 0.;
1358 backend = 0; 1711 backend = 0;
1359 backend_fd = -1; 1712 backend_fd = -1;
1360 gotasync = 0; 1713 sig_pending = 0;
1714#if EV_ASYNC_ENABLE
1715 async_pending = 0;
1716#endif
1361#if EV_USE_INOTIFY 1717#if EV_USE_INOTIFY
1362 fs_fd = -2; 1718 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1363#endif 1719#endif
1364 1720#if EV_USE_SIGNALFD
1365 /* pid check not overridable via env */ 1721 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1366#ifndef _WIN32
1367 if (flags & EVFLAG_FORKCHECK)
1368 curpid = getpid ();
1369#endif 1722#endif
1370 1723
1371 if (!(flags & EVFLAG_NOENV) 1724 if (!(flags & EVBACKEND_MASK))
1372 && !enable_secure ()
1373 && getenv ("LIBEV_FLAGS"))
1374 flags = atoi (getenv ("LIBEV_FLAGS"));
1375
1376 if (!(flags & 0x0000ffffU))
1377 flags |= ev_recommended_backends (); 1725 flags |= ev_recommended_backends ();
1378 1726
1727#if EV_USE_IOCP
1728 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1729#endif
1379#if EV_USE_PORT 1730#if EV_USE_PORT
1380 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1731 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1381#endif 1732#endif
1382#if EV_USE_KQUEUE 1733#if EV_USE_KQUEUE
1383 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1734 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1390#endif 1741#endif
1391#if EV_USE_SELECT 1742#if EV_USE_SELECT
1392 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1743 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393#endif 1744#endif
1394 1745
1746 ev_prepare_init (&pending_w, pendingcb);
1747
1748#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1395 ev_init (&pipeev, pipecb); 1749 ev_init (&pipe_w, pipecb);
1396 ev_set_priority (&pipeev, EV_MAXPRI); 1750 ev_set_priority (&pipe_w, EV_MAXPRI);
1751#endif
1397 } 1752 }
1398} 1753}
1399 1754
1400static void noinline 1755/* free up a loop structure */
1756void
1401loop_destroy (EV_P) 1757ev_loop_destroy (EV_P)
1402{ 1758{
1403 int i; 1759 int i;
1404 1760
1761#if EV_MULTIPLICITY
1762 /* mimic free (0) */
1763 if (!EV_A)
1764 return;
1765#endif
1766
1767#if EV_CLEANUP_ENABLE
1768 /* queue cleanup watchers (and execute them) */
1769 if (expect_false (cleanupcnt))
1770 {
1771 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1772 EV_INVOKE_PENDING;
1773 }
1774#endif
1775
1776#if EV_CHILD_ENABLE
1777 if (ev_is_active (&childev))
1778 {
1779 ev_ref (EV_A); /* child watcher */
1780 ev_signal_stop (EV_A_ &childev);
1781 }
1782#endif
1783
1405 if (ev_is_active (&pipeev)) 1784 if (ev_is_active (&pipe_w))
1406 { 1785 {
1407 ev_ref (EV_A); /* signal watcher */ 1786 /*ev_ref (EV_A);*/
1408 ev_io_stop (EV_A_ &pipeev); 1787 /*ev_io_stop (EV_A_ &pipe_w);*/
1409 1788
1410#if EV_USE_EVENTFD 1789#if EV_USE_EVENTFD
1411 if (evfd >= 0) 1790 if (evfd >= 0)
1412 close (evfd); 1791 close (evfd);
1413#endif 1792#endif
1414 1793
1415 if (evpipe [0] >= 0) 1794 if (evpipe [0] >= 0)
1416 { 1795 {
1417 close (evpipe [0]); 1796 EV_WIN32_CLOSE_FD (evpipe [0]);
1418 close (evpipe [1]); 1797 EV_WIN32_CLOSE_FD (evpipe [1]);
1419 } 1798 }
1420 } 1799 }
1800
1801#if EV_USE_SIGNALFD
1802 if (ev_is_active (&sigfd_w))
1803 close (sigfd);
1804#endif
1421 1805
1422#if EV_USE_INOTIFY 1806#if EV_USE_INOTIFY
1423 if (fs_fd >= 0) 1807 if (fs_fd >= 0)
1424 close (fs_fd); 1808 close (fs_fd);
1425#endif 1809#endif
1426 1810
1427 if (backend_fd >= 0) 1811 if (backend_fd >= 0)
1428 close (backend_fd); 1812 close (backend_fd);
1429 1813
1814#if EV_USE_IOCP
1815 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1816#endif
1430#if EV_USE_PORT 1817#if EV_USE_PORT
1431 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1818 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1432#endif 1819#endif
1433#if EV_USE_KQUEUE 1820#if EV_USE_KQUEUE
1434 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1821 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1449#if EV_IDLE_ENABLE 1836#if EV_IDLE_ENABLE
1450 array_free (idle, [i]); 1837 array_free (idle, [i]);
1451#endif 1838#endif
1452 } 1839 }
1453 1840
1454 ev_free (anfds); anfdmax = 0; 1841 ev_free (anfds); anfds = 0; anfdmax = 0;
1455 1842
1456 /* have to use the microsoft-never-gets-it-right macro */ 1843 /* have to use the microsoft-never-gets-it-right macro */
1844 array_free (rfeed, EMPTY);
1457 array_free (fdchange, EMPTY); 1845 array_free (fdchange, EMPTY);
1458 array_free (timer, EMPTY); 1846 array_free (timer, EMPTY);
1459#if EV_PERIODIC_ENABLE 1847#if EV_PERIODIC_ENABLE
1460 array_free (periodic, EMPTY); 1848 array_free (periodic, EMPTY);
1461#endif 1849#endif
1462#if EV_FORK_ENABLE 1850#if EV_FORK_ENABLE
1463 array_free (fork, EMPTY); 1851 array_free (fork, EMPTY);
1464#endif 1852#endif
1853#if EV_CLEANUP_ENABLE
1854 array_free (cleanup, EMPTY);
1855#endif
1465 array_free (prepare, EMPTY); 1856 array_free (prepare, EMPTY);
1466 array_free (check, EMPTY); 1857 array_free (check, EMPTY);
1467#if EV_ASYNC_ENABLE 1858#if EV_ASYNC_ENABLE
1468 array_free (async, EMPTY); 1859 array_free (async, EMPTY);
1469#endif 1860#endif
1470 1861
1471 backend = 0; 1862 backend = 0;
1863
1864#if EV_MULTIPLICITY
1865 if (ev_is_default_loop (EV_A))
1866#endif
1867 ev_default_loop_ptr = 0;
1868#if EV_MULTIPLICITY
1869 else
1870 ev_free (EV_A);
1871#endif
1472} 1872}
1473 1873
1474#if EV_USE_INOTIFY 1874#if EV_USE_INOTIFY
1475void inline_size infy_fork (EV_P); 1875inline_size void infy_fork (EV_P);
1476#endif 1876#endif
1477 1877
1478void inline_size 1878inline_size void
1479loop_fork (EV_P) 1879loop_fork (EV_P)
1480{ 1880{
1481#if EV_USE_PORT 1881#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1882 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483#endif 1883#endif
… …
1489#endif 1889#endif
1490#if EV_USE_INOTIFY 1890#if EV_USE_INOTIFY
1491 infy_fork (EV_A); 1891 infy_fork (EV_A);
1492#endif 1892#endif
1493 1893
1494 if (ev_is_active (&pipeev)) 1894 if (ev_is_active (&pipe_w))
1495 { 1895 {
1496 /* this "locks" the handlers against writing to the pipe */ 1896 /* this "locks" the handlers against writing to the pipe */
1497 /* while we modify the fd vars */ 1897 /* while we modify the fd vars */
1498 gotsig = 1; 1898 sig_pending = 1;
1499#if EV_ASYNC_ENABLE 1899#if EV_ASYNC_ENABLE
1500 gotasync = 1; 1900 async_pending = 1;
1501#endif 1901#endif
1502 1902
1503 ev_ref (EV_A); 1903 ev_ref (EV_A);
1504 ev_io_stop (EV_A_ &pipeev); 1904 ev_io_stop (EV_A_ &pipe_w);
1505 1905
1506#if EV_USE_EVENTFD 1906#if EV_USE_EVENTFD
1507 if (evfd >= 0) 1907 if (evfd >= 0)
1508 close (evfd); 1908 close (evfd);
1509#endif 1909#endif
1510 1910
1511 if (evpipe [0] >= 0) 1911 if (evpipe [0] >= 0)
1512 { 1912 {
1513 close (evpipe [0]); 1913 EV_WIN32_CLOSE_FD (evpipe [0]);
1514 close (evpipe [1]); 1914 EV_WIN32_CLOSE_FD (evpipe [1]);
1515 } 1915 }
1516 1916
1917#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1517 evpipe_init (EV_A); 1918 evpipe_init (EV_A);
1518 /* now iterate over everything, in case we missed something */ 1919 /* now iterate over everything, in case we missed something */
1519 pipecb (EV_A_ &pipeev, EV_READ); 1920 pipecb (EV_A_ &pipe_w, EV_READ);
1921#endif
1520 } 1922 }
1521 1923
1522 postfork = 0; 1924 postfork = 0;
1523} 1925}
1524 1926
1525#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
1526 1928
1527struct ev_loop * 1929struct ev_loop *
1528ev_loop_new (unsigned int flags) 1930ev_loop_new (unsigned int flags)
1529{ 1931{
1530 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1932 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531 1933
1532 memset (loop, 0, sizeof (struct ev_loop)); 1934 memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534 loop_init (EV_A_ flags); 1935 loop_init (EV_A_ flags);
1535 1936
1536 if (ev_backend (EV_A)) 1937 if (ev_backend (EV_A))
1537 return loop; 1938 return EV_A;
1538 1939
1940 ev_free (EV_A);
1539 return 0; 1941 return 0;
1540} 1942}
1541 1943
1542void 1944#endif /* multiplicity */
1543ev_loop_destroy (EV_P)
1544{
1545 loop_destroy (EV_A);
1546 ev_free (loop);
1547}
1548
1549void
1550ev_loop_fork (EV_P)
1551{
1552 postfork = 1; /* must be in line with ev_default_fork */
1553}
1554 1945
1555#if EV_VERIFY 1946#if EV_VERIFY
1556static void noinline 1947static void noinline
1557verify_watcher (EV_P_ W w) 1948verify_watcher (EV_P_ W w)
1558{ 1949{
… …
1586 verify_watcher (EV_A_ ws [cnt]); 1977 verify_watcher (EV_A_ ws [cnt]);
1587 } 1978 }
1588} 1979}
1589#endif 1980#endif
1590 1981
1982#if EV_FEATURE_API
1591void 1983void
1592ev_loop_verify (EV_P) 1984ev_verify (EV_P)
1593{ 1985{
1594#if EV_VERIFY 1986#if EV_VERIFY
1595 int i; 1987 int i;
1596 WL w; 1988 WL w;
1597 1989
… …
1631#if EV_FORK_ENABLE 2023#if EV_FORK_ENABLE
1632 assert (forkmax >= forkcnt); 2024 assert (forkmax >= forkcnt);
1633 array_verify (EV_A_ (W *)forks, forkcnt); 2025 array_verify (EV_A_ (W *)forks, forkcnt);
1634#endif 2026#endif
1635 2027
2028#if EV_CLEANUP_ENABLE
2029 assert (cleanupmax >= cleanupcnt);
2030 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2031#endif
2032
1636#if EV_ASYNC_ENABLE 2033#if EV_ASYNC_ENABLE
1637 assert (asyncmax >= asynccnt); 2034 assert (asyncmax >= asynccnt);
1638 array_verify (EV_A_ (W *)asyncs, asynccnt); 2035 array_verify (EV_A_ (W *)asyncs, asynccnt);
1639#endif 2036#endif
1640 2037
2038#if EV_PREPARE_ENABLE
1641 assert (preparemax >= preparecnt); 2039 assert (preparemax >= preparecnt);
1642 array_verify (EV_A_ (W *)prepares, preparecnt); 2040 array_verify (EV_A_ (W *)prepares, preparecnt);
2041#endif
1643 2042
2043#if EV_CHECK_ENABLE
1644 assert (checkmax >= checkcnt); 2044 assert (checkmax >= checkcnt);
1645 array_verify (EV_A_ (W *)checks, checkcnt); 2045 array_verify (EV_A_ (W *)checks, checkcnt);
2046#endif
1646 2047
1647# if 0 2048# if 0
2049#if EV_CHILD_ENABLE
1648 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2050 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1649 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2051 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2052#endif
1650# endif 2053# endif
1651#endif 2054#endif
1652} 2055}
1653 2056#endif
1654#endif /* multiplicity */
1655 2057
1656#if EV_MULTIPLICITY 2058#if EV_MULTIPLICITY
1657struct ev_loop * 2059struct ev_loop *
1658ev_default_loop_init (unsigned int flags)
1659#else 2060#else
1660int 2061int
2062#endif
1661ev_default_loop (unsigned int flags) 2063ev_default_loop (unsigned int flags)
1662#endif
1663{ 2064{
1664 if (!ev_default_loop_ptr) 2065 if (!ev_default_loop_ptr)
1665 { 2066 {
1666#if EV_MULTIPLICITY 2067#if EV_MULTIPLICITY
1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2068 EV_P = ev_default_loop_ptr = &default_loop_struct;
1668#else 2069#else
1669 ev_default_loop_ptr = 1; 2070 ev_default_loop_ptr = 1;
1670#endif 2071#endif
1671 2072
1672 loop_init (EV_A_ flags); 2073 loop_init (EV_A_ flags);
1673 2074
1674 if (ev_backend (EV_A)) 2075 if (ev_backend (EV_A))
1675 { 2076 {
1676#ifndef _WIN32 2077#if EV_CHILD_ENABLE
1677 ev_signal_init (&childev, childcb, SIGCHLD); 2078 ev_signal_init (&childev, childcb, SIGCHLD);
1678 ev_set_priority (&childev, EV_MAXPRI); 2079 ev_set_priority (&childev, EV_MAXPRI);
1679 ev_signal_start (EV_A_ &childev); 2080 ev_signal_start (EV_A_ &childev);
1680 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2081 ev_unref (EV_A); /* child watcher should not keep loop alive */
1681#endif 2082#endif
… …
1686 2087
1687 return ev_default_loop_ptr; 2088 return ev_default_loop_ptr;
1688} 2089}
1689 2090
1690void 2091void
1691ev_default_destroy (void) 2092ev_loop_fork (EV_P)
1692{ 2093{
1693#if EV_MULTIPLICITY
1694 struct ev_loop *loop = ev_default_loop_ptr;
1695#endif
1696
1697 ev_default_loop_ptr = 0;
1698
1699#ifndef _WIN32
1700 ev_ref (EV_A); /* child watcher */
1701 ev_signal_stop (EV_A_ &childev);
1702#endif
1703
1704 loop_destroy (EV_A);
1705}
1706
1707void
1708ev_default_fork (void)
1709{
1710#if EV_MULTIPLICITY
1711 struct ev_loop *loop = ev_default_loop_ptr;
1712#endif
1713
1714 postfork = 1; /* must be in line with ev_loop_fork */ 2094 postfork = 1; /* must be in line with ev_default_fork */
1715} 2095}
1716 2096
1717/*****************************************************************************/ 2097/*****************************************************************************/
1718 2098
1719void 2099void
1720ev_invoke (EV_P_ void *w, int revents) 2100ev_invoke (EV_P_ void *w, int revents)
1721{ 2101{
1722 EV_CB_INVOKE ((W)w, revents); 2102 EV_CB_INVOKE ((W)w, revents);
1723} 2103}
1724 2104
1725void inline_speed 2105unsigned int
1726call_pending (EV_P) 2106ev_pending_count (EV_P)
2107{
2108 int pri;
2109 unsigned int count = 0;
2110
2111 for (pri = NUMPRI; pri--; )
2112 count += pendingcnt [pri];
2113
2114 return count;
2115}
2116
2117void noinline
2118ev_invoke_pending (EV_P)
1727{ 2119{
1728 int pri; 2120 int pri;
1729 2121
1730 for (pri = NUMPRI; pri--; ) 2122 for (pri = NUMPRI; pri--; )
1731 while (pendingcnt [pri]) 2123 while (pendingcnt [pri])
1732 { 2124 {
1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2125 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1734 2126
1735 if (expect_true (p->w))
1736 {
1737 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1738
1739 p->w->pending = 0; 2127 p->w->pending = 0;
1740 EV_CB_INVOKE (p->w, p->events); 2128 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK; 2129 EV_FREQUENT_CHECK;
1742 }
1743 } 2130 }
1744} 2131}
1745 2132
1746#if EV_IDLE_ENABLE 2133#if EV_IDLE_ENABLE
1747void inline_size 2134/* make idle watchers pending. this handles the "call-idle */
2135/* only when higher priorities are idle" logic */
2136inline_size void
1748idle_reify (EV_P) 2137idle_reify (EV_P)
1749{ 2138{
1750 if (expect_false (idleall)) 2139 if (expect_false (idleall))
1751 { 2140 {
1752 int pri; 2141 int pri;
… …
1764 } 2153 }
1765 } 2154 }
1766} 2155}
1767#endif 2156#endif
1768 2157
1769void inline_size 2158/* make timers pending */
2159inline_size void
1770timers_reify (EV_P) 2160timers_reify (EV_P)
1771{ 2161{
1772 EV_FREQUENT_CHECK; 2162 EV_FREQUENT_CHECK;
1773 2163
1774 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2164 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775 { 2165 {
1776 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2166 do
1777
1778 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1779
1780 /* first reschedule or stop timer */
1781 if (w->repeat)
1782 { 2167 {
2168 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2169
2170 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2171
2172 /* first reschedule or stop timer */
2173 if (w->repeat)
2174 {
1783 ev_at (w) += w->repeat; 2175 ev_at (w) += w->repeat;
1784 if (ev_at (w) < mn_now) 2176 if (ev_at (w) < mn_now)
1785 ev_at (w) = mn_now; 2177 ev_at (w) = mn_now;
1786 2178
1787 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2179 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788 2180
1789 ANHE_at_cache (timers [HEAP0]); 2181 ANHE_at_cache (timers [HEAP0]);
1790 downheap (timers, timercnt, HEAP0); 2182 downheap (timers, timercnt, HEAP0);
2183 }
2184 else
2185 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2186
2187 EV_FREQUENT_CHECK;
2188 feed_reverse (EV_A_ (W)w);
1791 } 2189 }
1792 else 2190 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794 2191
1795 EV_FREQUENT_CHECK; 2192 feed_reverse_done (EV_A_ EV_TIMER);
1796 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1797 } 2193 }
1798} 2194}
1799 2195
1800#if EV_PERIODIC_ENABLE 2196#if EV_PERIODIC_ENABLE
1801void inline_size 2197
2198inline_speed
2199periodic_recalc (EV_P_ ev_periodic *w)
2200{
2201 /* TODO: use slow but potentially more correct incremental algo, */
2202 /* also do not rely on ceil */
2203 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2204}
2205
2206/* make periodics pending */
2207inline_size void
1802periodics_reify (EV_P) 2208periodics_reify (EV_P)
1803{ 2209{
1804 EV_FREQUENT_CHECK; 2210 EV_FREQUENT_CHECK;
1805 2211
1806 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2212 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807 { 2213 {
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2214 int feed_count = 0;
1809 2215
1810 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2216 do
1811
1812 /* first reschedule or stop timer */
1813 if (w->reschedule_cb)
1814 { 2217 {
2218 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2219
2220 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2221
2222 /* first reschedule or stop timer */
2223 if (w->reschedule_cb)
2224 {
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2225 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816 2226
1817 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2227 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818 2228
1819 ANHE_at_cache (periodics [HEAP0]); 2229 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0); 2230 downheap (periodics, periodiccnt, HEAP0);
2231 }
2232 else if (w->interval)
2233 {
2234 periodic_recalc (EV_A_ w);
2235
2236 /* if next trigger time is not sufficiently in the future, put it there */
2237 /* this might happen because of floating point inexactness */
2238 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2239 {
2240 ev_at (w) += w->interval;
2241
2242 /* if interval is unreasonably low we might still have a time in the past */
2243 /* so correct this. this will make the periodic very inexact, but the user */
2244 /* has effectively asked to get triggered more often than possible */
2245 if (ev_at (w) < ev_rt_now)
2246 ev_at (w) = ev_rt_now;
2247 }
2248
2249 ANHE_at_cache (periodics [HEAP0]);
2250 downheap (periodics, periodiccnt, HEAP0);
2251 }
2252 else
2253 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2254
2255 EV_FREQUENT_CHECK;
2256 feed_reverse (EV_A_ (W)w);
1821 } 2257 }
1822 else if (w->interval) 2258 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1823 {
1824 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1825 /* if next trigger time is not sufficiently in the future, put it there */
1826 /* this might happen because of floating point inexactness */
1827 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1828 {
1829 ev_at (w) += w->interval;
1830 2259
1831 /* if interval is unreasonably low we might still have a time in the past */
1832 /* so correct this. this will make the periodic very inexact, but the user */
1833 /* has effectively asked to get triggered more often than possible */
1834 if (ev_at (w) < ev_rt_now)
1835 ev_at (w) = ev_rt_now;
1836 }
1837
1838 ANHE_at_cache (periodics [HEAP0]);
1839 downheap (periodics, periodiccnt, HEAP0);
1840 }
1841 else
1842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1843
1844 EV_FREQUENT_CHECK;
1845 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2260 feed_reverse_done (EV_A_ EV_PERIODIC);
1846 } 2261 }
1847} 2262}
1848 2263
2264/* simply recalculate all periodics */
2265/* TODO: maybe ensure that at least one event happens when jumping forward? */
1849static void noinline 2266static void noinline
1850periodics_reschedule (EV_P) 2267periodics_reschedule (EV_P)
1851{ 2268{
1852 int i; 2269 int i;
1853 2270
… …
1857 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2274 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1858 2275
1859 if (w->reschedule_cb) 2276 if (w->reschedule_cb)
1860 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2277 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1861 else if (w->interval) 2278 else if (w->interval)
1862 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2279 periodic_recalc (EV_A_ w);
1863 2280
1864 ANHE_at_cache (periodics [i]); 2281 ANHE_at_cache (periodics [i]);
1865 } 2282 }
1866 2283
1867 reheap (periodics, periodiccnt); 2284 reheap (periodics, periodiccnt);
1868} 2285}
1869#endif 2286#endif
1870 2287
1871void inline_speed 2288/* adjust all timers by a given offset */
2289static void noinline
2290timers_reschedule (EV_P_ ev_tstamp adjust)
2291{
2292 int i;
2293
2294 for (i = 0; i < timercnt; ++i)
2295 {
2296 ANHE *he = timers + i + HEAP0;
2297 ANHE_w (*he)->at += adjust;
2298 ANHE_at_cache (*he);
2299 }
2300}
2301
2302/* fetch new monotonic and realtime times from the kernel */
2303/* also detect if there was a timejump, and act accordingly */
2304inline_speed void
1872time_update (EV_P_ ev_tstamp max_block) 2305time_update (EV_P_ ev_tstamp max_block)
1873{ 2306{
1874 int i;
1875
1876#if EV_USE_MONOTONIC 2307#if EV_USE_MONOTONIC
1877 if (expect_true (have_monotonic)) 2308 if (expect_true (have_monotonic))
1878 { 2309 {
2310 int i;
1879 ev_tstamp odiff = rtmn_diff; 2311 ev_tstamp odiff = rtmn_diff;
1880 2312
1881 mn_now = get_clock (); 2313 mn_now = get_clock ();
1882 2314
1883 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2315 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1909 ev_rt_now = ev_time (); 2341 ev_rt_now = ev_time ();
1910 mn_now = get_clock (); 2342 mn_now = get_clock ();
1911 now_floor = mn_now; 2343 now_floor = mn_now;
1912 } 2344 }
1913 2345
2346 /* no timer adjustment, as the monotonic clock doesn't jump */
2347 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914# if EV_PERIODIC_ENABLE 2348# if EV_PERIODIC_ENABLE
1915 periodics_reschedule (EV_A); 2349 periodics_reschedule (EV_A);
1916# endif 2350# endif
1917 /* no timer adjustment, as the monotonic clock doesn't jump */
1918 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919 } 2351 }
1920 else 2352 else
1921#endif 2353#endif
1922 { 2354 {
1923 ev_rt_now = ev_time (); 2355 ev_rt_now = ev_time ();
1924 2356
1925 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2357 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926 { 2358 {
2359 /* adjust timers. this is easy, as the offset is the same for all of them */
2360 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927#if EV_PERIODIC_ENABLE 2361#if EV_PERIODIC_ENABLE
1928 periodics_reschedule (EV_A); 2362 periodics_reschedule (EV_A);
1929#endif 2363#endif
1930 /* adjust timers. this is easy, as the offset is the same for all of them */
1931 for (i = 0; i < timercnt; ++i)
1932 {
1933 ANHE *he = timers + i + HEAP0;
1934 ANHE_w (*he)->at += ev_rt_now - mn_now;
1935 ANHE_at_cache (*he);
1936 }
1937 } 2364 }
1938 2365
1939 mn_now = ev_rt_now; 2366 mn_now = ev_rt_now;
1940 } 2367 }
1941} 2368}
1942 2369
1943void 2370void
1944ev_ref (EV_P)
1945{
1946 ++activecnt;
1947}
1948
1949void
1950ev_unref (EV_P)
1951{
1952 --activecnt;
1953}
1954
1955void
1956ev_now_update (EV_P)
1957{
1958 time_update (EV_A_ 1e100);
1959}
1960
1961static int loop_done;
1962
1963void
1964ev_loop (EV_P_ int flags) 2371ev_run (EV_P_ int flags)
1965{ 2372{
2373#if EV_FEATURE_API
2374 ++loop_depth;
2375#endif
2376
2377 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2378
1966 loop_done = EVUNLOOP_CANCEL; 2379 loop_done = EVBREAK_CANCEL;
1967 2380
1968 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2381 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969 2382
1970 do 2383 do
1971 { 2384 {
1972#if EV_VERIFY >= 2 2385#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A); 2386 ev_verify (EV_A);
1974#endif 2387#endif
1975 2388
1976#ifndef _WIN32 2389#ifndef _WIN32
1977 if (expect_false (curpid)) /* penalise the forking check even more */ 2390 if (expect_false (curpid)) /* penalise the forking check even more */
1978 if (expect_false (getpid () != curpid)) 2391 if (expect_false (getpid () != curpid))
… …
1986 /* we might have forked, so queue fork handlers */ 2399 /* we might have forked, so queue fork handlers */
1987 if (expect_false (postfork)) 2400 if (expect_false (postfork))
1988 if (forkcnt) 2401 if (forkcnt)
1989 { 2402 {
1990 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2403 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991 call_pending (EV_A); 2404 EV_INVOKE_PENDING;
1992 } 2405 }
1993#endif 2406#endif
1994 2407
2408#if EV_PREPARE_ENABLE
1995 /* queue prepare watchers (and execute them) */ 2409 /* queue prepare watchers (and execute them) */
1996 if (expect_false (preparecnt)) 2410 if (expect_false (preparecnt))
1997 { 2411 {
1998 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2412 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999 call_pending (EV_A); 2413 EV_INVOKE_PENDING;
2000 } 2414 }
2415#endif
2001 2416
2002 if (expect_false (!activecnt)) 2417 if (expect_false (loop_done))
2003 break; 2418 break;
2004 2419
2005 /* we might have forked, so reify kernel state if necessary */ 2420 /* we might have forked, so reify kernel state if necessary */
2006 if (expect_false (postfork)) 2421 if (expect_false (postfork))
2007 loop_fork (EV_A); 2422 loop_fork (EV_A);
… …
2012 /* calculate blocking time */ 2427 /* calculate blocking time */
2013 { 2428 {
2014 ev_tstamp waittime = 0.; 2429 ev_tstamp waittime = 0.;
2015 ev_tstamp sleeptime = 0.; 2430 ev_tstamp sleeptime = 0.;
2016 2431
2432 /* remember old timestamp for io_blocktime calculation */
2433 ev_tstamp prev_mn_now = mn_now;
2434
2435 /* update time to cancel out callback processing overhead */
2436 time_update (EV_A_ 1e100);
2437
2017 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2438 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2018 { 2439 {
2019 /* update time to cancel out callback processing overhead */
2020 time_update (EV_A_ 1e100);
2021
2022 waittime = MAX_BLOCKTIME; 2440 waittime = MAX_BLOCKTIME;
2023 2441
2024 if (timercnt) 2442 if (timercnt)
2025 { 2443 {
2026 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2444 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2033 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2451 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2034 if (waittime > to) waittime = to; 2452 if (waittime > to) waittime = to;
2035 } 2453 }
2036#endif 2454#endif
2037 2455
2456 /* don't let timeouts decrease the waittime below timeout_blocktime */
2038 if (expect_false (waittime < timeout_blocktime)) 2457 if (expect_false (waittime < timeout_blocktime))
2039 waittime = timeout_blocktime; 2458 waittime = timeout_blocktime;
2040 2459
2041 sleeptime = waittime - backend_fudge; 2460 /* extra check because io_blocktime is commonly 0 */
2042
2043 if (expect_true (sleeptime > io_blocktime)) 2461 if (expect_false (io_blocktime))
2044 sleeptime = io_blocktime;
2045
2046 if (sleeptime)
2047 { 2462 {
2463 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2464
2465 if (sleeptime > waittime - backend_fudge)
2466 sleeptime = waittime - backend_fudge;
2467
2468 if (expect_true (sleeptime > 0.))
2469 {
2048 ev_sleep (sleeptime); 2470 ev_sleep (sleeptime);
2049 waittime -= sleeptime; 2471 waittime -= sleeptime;
2472 }
2050 } 2473 }
2051 } 2474 }
2052 2475
2476#if EV_FEATURE_API
2053 ++loop_count; 2477 ++loop_count;
2478#endif
2479 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2054 backend_poll (EV_A_ waittime); 2480 backend_poll (EV_A_ waittime);
2481 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2055 2482
2056 /* update ev_rt_now, do magic */ 2483 /* update ev_rt_now, do magic */
2057 time_update (EV_A_ waittime + sleeptime); 2484 time_update (EV_A_ waittime + sleeptime);
2058 } 2485 }
2059 2486
… …
2066#if EV_IDLE_ENABLE 2493#if EV_IDLE_ENABLE
2067 /* queue idle watchers unless other events are pending */ 2494 /* queue idle watchers unless other events are pending */
2068 idle_reify (EV_A); 2495 idle_reify (EV_A);
2069#endif 2496#endif
2070 2497
2498#if EV_CHECK_ENABLE
2071 /* queue check watchers, to be executed first */ 2499 /* queue check watchers, to be executed first */
2072 if (expect_false (checkcnt)) 2500 if (expect_false (checkcnt))
2073 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2501 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2502#endif
2074 2503
2075 call_pending (EV_A); 2504 EV_INVOKE_PENDING;
2076 } 2505 }
2077 while (expect_true ( 2506 while (expect_true (
2078 activecnt 2507 activecnt
2079 && !loop_done 2508 && !loop_done
2080 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2509 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2081 )); 2510 ));
2082 2511
2083 if (loop_done == EVUNLOOP_ONE) 2512 if (loop_done == EVBREAK_ONE)
2084 loop_done = EVUNLOOP_CANCEL; 2513 loop_done = EVBREAK_CANCEL;
2085}
2086 2514
2515#if EV_FEATURE_API
2516 --loop_depth;
2517#endif
2518}
2519
2087void 2520void
2088ev_unloop (EV_P_ int how) 2521ev_break (EV_P_ int how)
2089{ 2522{
2090 loop_done = how; 2523 loop_done = how;
2091} 2524}
2092 2525
2526void
2527ev_ref (EV_P)
2528{
2529 ++activecnt;
2530}
2531
2532void
2533ev_unref (EV_P)
2534{
2535 --activecnt;
2536}
2537
2538void
2539ev_now_update (EV_P)
2540{
2541 time_update (EV_A_ 1e100);
2542}
2543
2544void
2545ev_suspend (EV_P)
2546{
2547 ev_now_update (EV_A);
2548}
2549
2550void
2551ev_resume (EV_P)
2552{
2553 ev_tstamp mn_prev = mn_now;
2554
2555 ev_now_update (EV_A);
2556 timers_reschedule (EV_A_ mn_now - mn_prev);
2557#if EV_PERIODIC_ENABLE
2558 /* TODO: really do this? */
2559 periodics_reschedule (EV_A);
2560#endif
2561}
2562
2093/*****************************************************************************/ 2563/*****************************************************************************/
2564/* singly-linked list management, used when the expected list length is short */
2094 2565
2095void inline_size 2566inline_size void
2096wlist_add (WL *head, WL elem) 2567wlist_add (WL *head, WL elem)
2097{ 2568{
2098 elem->next = *head; 2569 elem->next = *head;
2099 *head = elem; 2570 *head = elem;
2100} 2571}
2101 2572
2102void inline_size 2573inline_size void
2103wlist_del (WL *head, WL elem) 2574wlist_del (WL *head, WL elem)
2104{ 2575{
2105 while (*head) 2576 while (*head)
2106 { 2577 {
2107 if (*head == elem) 2578 if (expect_true (*head == elem))
2108 { 2579 {
2109 *head = elem->next; 2580 *head = elem->next;
2110 return; 2581 break;
2111 } 2582 }
2112 2583
2113 head = &(*head)->next; 2584 head = &(*head)->next;
2114 } 2585 }
2115} 2586}
2116 2587
2117void inline_speed 2588/* internal, faster, version of ev_clear_pending */
2589inline_speed void
2118clear_pending (EV_P_ W w) 2590clear_pending (EV_P_ W w)
2119{ 2591{
2120 if (w->pending) 2592 if (w->pending)
2121 { 2593 {
2122 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2594 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2123 w->pending = 0; 2595 w->pending = 0;
2124 } 2596 }
2125} 2597}
2126 2598
2127int 2599int
… …
2131 int pending = w_->pending; 2603 int pending = w_->pending;
2132 2604
2133 if (expect_true (pending)) 2605 if (expect_true (pending))
2134 { 2606 {
2135 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2607 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2608 p->w = (W)&pending_w;
2136 w_->pending = 0; 2609 w_->pending = 0;
2137 p->w = 0;
2138 return p->events; 2610 return p->events;
2139 } 2611 }
2140 else 2612 else
2141 return 0; 2613 return 0;
2142} 2614}
2143 2615
2144void inline_size 2616inline_size void
2145pri_adjust (EV_P_ W w) 2617pri_adjust (EV_P_ W w)
2146{ 2618{
2147 int pri = w->priority; 2619 int pri = ev_priority (w);
2148 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2620 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2149 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2621 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2150 w->priority = pri; 2622 ev_set_priority (w, pri);
2151} 2623}
2152 2624
2153void inline_speed 2625inline_speed void
2154ev_start (EV_P_ W w, int active) 2626ev_start (EV_P_ W w, int active)
2155{ 2627{
2156 pri_adjust (EV_A_ w); 2628 pri_adjust (EV_A_ w);
2157 w->active = active; 2629 w->active = active;
2158 ev_ref (EV_A); 2630 ev_ref (EV_A);
2159} 2631}
2160 2632
2161void inline_size 2633inline_size void
2162ev_stop (EV_P_ W w) 2634ev_stop (EV_P_ W w)
2163{ 2635{
2164 ev_unref (EV_A); 2636 ev_unref (EV_A);
2165 w->active = 0; 2637 w->active = 0;
2166} 2638}
… …
2174 2646
2175 if (expect_false (ev_is_active (w))) 2647 if (expect_false (ev_is_active (w)))
2176 return; 2648 return;
2177 2649
2178 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2650 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2179 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2651 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180 2652
2181 EV_FREQUENT_CHECK; 2653 EV_FREQUENT_CHECK;
2182 2654
2183 ev_start (EV_A_ (W)w, 1); 2655 ev_start (EV_A_ (W)w, 1);
2184 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2656 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2185 wlist_add (&anfds[fd].head, (WL)w); 2657 wlist_add (&anfds[fd].head, (WL)w);
2186 2658
2187 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2659 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2188 w->events &= ~EV__IOFDSET; 2660 w->events &= ~EV__IOFDSET;
2189 2661
2190 EV_FREQUENT_CHECK; 2662 EV_FREQUENT_CHECK;
2191} 2663}
2192 2664
… …
2202 EV_FREQUENT_CHECK; 2674 EV_FREQUENT_CHECK;
2203 2675
2204 wlist_del (&anfds[w->fd].head, (WL)w); 2676 wlist_del (&anfds[w->fd].head, (WL)w);
2205 ev_stop (EV_A_ (W)w); 2677 ev_stop (EV_A_ (W)w);
2206 2678
2207 fd_change (EV_A_ w->fd, 1); 2679 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2208 2680
2209 EV_FREQUENT_CHECK; 2681 EV_FREQUENT_CHECK;
2210} 2682}
2211 2683
2212void noinline 2684void noinline
… …
2254 timers [active] = timers [timercnt + HEAP0]; 2726 timers [active] = timers [timercnt + HEAP0];
2255 adjustheap (timers, timercnt, active); 2727 adjustheap (timers, timercnt, active);
2256 } 2728 }
2257 } 2729 }
2258 2730
2259 EV_FREQUENT_CHECK;
2260
2261 ev_at (w) -= mn_now; 2731 ev_at (w) -= mn_now;
2262 2732
2263 ev_stop (EV_A_ (W)w); 2733 ev_stop (EV_A_ (W)w);
2734
2735 EV_FREQUENT_CHECK;
2264} 2736}
2265 2737
2266void noinline 2738void noinline
2267ev_timer_again (EV_P_ ev_timer *w) 2739ev_timer_again (EV_P_ ev_timer *w)
2268{ 2740{
… …
2286 } 2758 }
2287 2759
2288 EV_FREQUENT_CHECK; 2760 EV_FREQUENT_CHECK;
2289} 2761}
2290 2762
2763ev_tstamp
2764ev_timer_remaining (EV_P_ ev_timer *w)
2765{
2766 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2767}
2768
2291#if EV_PERIODIC_ENABLE 2769#if EV_PERIODIC_ENABLE
2292void noinline 2770void noinline
2293ev_periodic_start (EV_P_ ev_periodic *w) 2771ev_periodic_start (EV_P_ ev_periodic *w)
2294{ 2772{
2295 if (expect_false (ev_is_active (w))) 2773 if (expect_false (ev_is_active (w)))
… …
2298 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
2299 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2300 else if (w->interval) 2778 else if (w->interval)
2301 { 2779 {
2302 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2780 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2303 /* this formula differs from the one in periodic_reify because we do not always round up */ 2781 periodic_recalc (EV_A_ w);
2304 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2305 } 2782 }
2306 else 2783 else
2307 ev_at (w) = w->offset; 2784 ev_at (w) = w->offset;
2308 2785
2309 EV_FREQUENT_CHECK; 2786 EV_FREQUENT_CHECK;
… …
2341 periodics [active] = periodics [periodiccnt + HEAP0]; 2818 periodics [active] = periodics [periodiccnt + HEAP0];
2342 adjustheap (periodics, periodiccnt, active); 2819 adjustheap (periodics, periodiccnt, active);
2343 } 2820 }
2344 } 2821 }
2345 2822
2346 EV_FREQUENT_CHECK;
2347
2348 ev_stop (EV_A_ (W)w); 2823 ev_stop (EV_A_ (W)w);
2824
2825 EV_FREQUENT_CHECK;
2349} 2826}
2350 2827
2351void noinline 2828void noinline
2352ev_periodic_again (EV_P_ ev_periodic *w) 2829ev_periodic_again (EV_P_ ev_periodic *w)
2353{ 2830{
… …
2359 2836
2360#ifndef SA_RESTART 2837#ifndef SA_RESTART
2361# define SA_RESTART 0 2838# define SA_RESTART 0
2362#endif 2839#endif
2363 2840
2841#if EV_SIGNAL_ENABLE
2842
2364void noinline 2843void noinline
2365ev_signal_start (EV_P_ ev_signal *w) 2844ev_signal_start (EV_P_ ev_signal *w)
2366{ 2845{
2367#if EV_MULTIPLICITY
2368 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2369#endif
2370 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2371 return; 2847 return;
2372 2848
2373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2849 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2374 2850
2375 evpipe_init (EV_A); 2851#if EV_MULTIPLICITY
2852 assert (("libev: a signal must not be attached to two different loops",
2853 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2376 2854
2377 EV_FREQUENT_CHECK; 2855 signals [w->signum - 1].loop = EV_A;
2856#endif
2378 2857
2858 EV_FREQUENT_CHECK;
2859
2860#if EV_USE_SIGNALFD
2861 if (sigfd == -2)
2379 { 2862 {
2380#ifndef _WIN32 2863 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2381 sigset_t full, prev; 2864 if (sigfd < 0 && errno == EINVAL)
2382 sigfillset (&full); 2865 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2383 sigprocmask (SIG_SETMASK, &full, &prev);
2384#endif
2385 2866
2386 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2867 if (sigfd >= 0)
2868 {
2869 fd_intern (sigfd); /* doing it twice will not hurt */
2387 2870
2388#ifndef _WIN32 2871 sigemptyset (&sigfd_set);
2389 sigprocmask (SIG_SETMASK, &prev, 0); 2872
2390#endif 2873 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2874 ev_set_priority (&sigfd_w, EV_MAXPRI);
2875 ev_io_start (EV_A_ &sigfd_w);
2876 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2877 }
2391 } 2878 }
2879
2880 if (sigfd >= 0)
2881 {
2882 /* TODO: check .head */
2883 sigaddset (&sigfd_set, w->signum);
2884 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2885
2886 signalfd (sigfd, &sigfd_set, 0);
2887 }
2888#endif
2392 2889
2393 ev_start (EV_A_ (W)w, 1); 2890 ev_start (EV_A_ (W)w, 1);
2394 wlist_add (&signals [w->signum - 1].head, (WL)w); 2891 wlist_add (&signals [w->signum - 1].head, (WL)w);
2395 2892
2396 if (!((WL)w)->next) 2893 if (!((WL)w)->next)
2894# if EV_USE_SIGNALFD
2895 if (sigfd < 0) /*TODO*/
2896# endif
2397 { 2897 {
2398#if _WIN32 2898# ifdef _WIN32
2899 evpipe_init (EV_A);
2900
2399 signal (w->signum, ev_sighandler); 2901 signal (w->signum, ev_sighandler);
2400#else 2902# else
2401 struct sigaction sa; 2903 struct sigaction sa;
2904
2905 evpipe_init (EV_A);
2906
2402 sa.sa_handler = ev_sighandler; 2907 sa.sa_handler = ev_sighandler;
2403 sigfillset (&sa.sa_mask); 2908 sigfillset (&sa.sa_mask);
2404 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2909 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2405 sigaction (w->signum, &sa, 0); 2910 sigaction (w->signum, &sa, 0);
2911
2912 if (origflags & EVFLAG_NOSIGMASK)
2913 {
2914 sigemptyset (&sa.sa_mask);
2915 sigaddset (&sa.sa_mask, w->signum);
2916 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2917 }
2406#endif 2918#endif
2407 } 2919 }
2408 2920
2409 EV_FREQUENT_CHECK; 2921 EV_FREQUENT_CHECK;
2410} 2922}
2411 2923
2412void noinline 2924void noinline
… …
2420 2932
2421 wlist_del (&signals [w->signum - 1].head, (WL)w); 2933 wlist_del (&signals [w->signum - 1].head, (WL)w);
2422 ev_stop (EV_A_ (W)w); 2934 ev_stop (EV_A_ (W)w);
2423 2935
2424 if (!signals [w->signum - 1].head) 2936 if (!signals [w->signum - 1].head)
2937 {
2938#if EV_MULTIPLICITY
2939 signals [w->signum - 1].loop = 0; /* unattach from signal */
2940#endif
2941#if EV_USE_SIGNALFD
2942 if (sigfd >= 0)
2943 {
2944 sigset_t ss;
2945
2946 sigemptyset (&ss);
2947 sigaddset (&ss, w->signum);
2948 sigdelset (&sigfd_set, w->signum);
2949
2950 signalfd (sigfd, &sigfd_set, 0);
2951 sigprocmask (SIG_UNBLOCK, &ss, 0);
2952 }
2953 else
2954#endif
2425 signal (w->signum, SIG_DFL); 2955 signal (w->signum, SIG_DFL);
2956 }
2426 2957
2427 EV_FREQUENT_CHECK; 2958 EV_FREQUENT_CHECK;
2428} 2959}
2960
2961#endif
2962
2963#if EV_CHILD_ENABLE
2429 2964
2430void 2965void
2431ev_child_start (EV_P_ ev_child *w) 2966ev_child_start (EV_P_ ev_child *w)
2432{ 2967{
2433#if EV_MULTIPLICITY 2968#if EV_MULTIPLICITY
… …
2437 return; 2972 return;
2438 2973
2439 EV_FREQUENT_CHECK; 2974 EV_FREQUENT_CHECK;
2440 2975
2441 ev_start (EV_A_ (W)w, 1); 2976 ev_start (EV_A_ (W)w, 1);
2442 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2977 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2443 2978
2444 EV_FREQUENT_CHECK; 2979 EV_FREQUENT_CHECK;
2445} 2980}
2446 2981
2447void 2982void
… …
2451 if (expect_false (!ev_is_active (w))) 2986 if (expect_false (!ev_is_active (w)))
2452 return; 2987 return;
2453 2988
2454 EV_FREQUENT_CHECK; 2989 EV_FREQUENT_CHECK;
2455 2990
2456 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2991 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2457 ev_stop (EV_A_ (W)w); 2992 ev_stop (EV_A_ (W)w);
2458 2993
2459 EV_FREQUENT_CHECK; 2994 EV_FREQUENT_CHECK;
2460} 2995}
2996
2997#endif
2461 2998
2462#if EV_STAT_ENABLE 2999#if EV_STAT_ENABLE
2463 3000
2464# ifdef _WIN32 3001# ifdef _WIN32
2465# undef lstat 3002# undef lstat
… …
2471#define MIN_STAT_INTERVAL 0.1074891 3008#define MIN_STAT_INTERVAL 0.1074891
2472 3009
2473static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3010static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2474 3011
2475#if EV_USE_INOTIFY 3012#if EV_USE_INOTIFY
2476# define EV_INOTIFY_BUFSIZE 8192 3013
3014/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3015# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2477 3016
2478static void noinline 3017static void noinline
2479infy_add (EV_P_ ev_stat *w) 3018infy_add (EV_P_ ev_stat *w)
2480{ 3019{
2481 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); 3020 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);
2482 3021
2483 if (w->wd < 0) 3022 if (w->wd >= 0)
3023 {
3024 struct statfs sfs;
3025
3026 /* now local changes will be tracked by inotify, but remote changes won't */
3027 /* unless the filesystem is known to be local, we therefore still poll */
3028 /* also do poll on <2.6.25, but with normal frequency */
3029
3030 if (!fs_2625)
3031 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3032 else if (!statfs (w->path, &sfs)
3033 && (sfs.f_type == 0x1373 /* devfs */
3034 || sfs.f_type == 0xEF53 /* ext2/3 */
3035 || sfs.f_type == 0x3153464a /* jfs */
3036 || sfs.f_type == 0x52654973 /* reiser3 */
3037 || sfs.f_type == 0x01021994 /* tempfs */
3038 || sfs.f_type == 0x58465342 /* xfs */))
3039 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3040 else
3041 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2484 { 3042 }
3043 else
3044 {
3045 /* can't use inotify, continue to stat */
2485 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2486 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2487 3047
2488 /* monitor some parent directory for speedup hints */ 3048 /* if path is not there, monitor some parent directory for speedup hints */
2489 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3049 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2490 /* but an efficiency issue only */ 3050 /* but an efficiency issue only */
2491 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3051 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2492 { 3052 {
2493 char path [4096]; 3053 char path [4096];
… …
2509 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3069 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2510 } 3070 }
2511 } 3071 }
2512 3072
2513 if (w->wd >= 0) 3073 if (w->wd >= 0)
2514 {
2515 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3074 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2516 3075
2517 /* now local changes will be tracked by inotify, but remote changes won't */ 3076 /* now re-arm timer, if required */
2518 /* unless the filesystem it known to be local, we therefore still poll */ 3077 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2519 /* also do poll on <2.6.25, but with normal frequency */
2520 struct statfs sfs;
2521
2522 if (fs_2625 && !statfs (w->path, &sfs))
2523 if (sfs.f_type == 0x1373 /* devfs */
2524 || sfs.f_type == 0xEF53 /* ext2/3 */
2525 || sfs.f_type == 0x3153464a /* jfs */
2526 || sfs.f_type == 0x52654973 /* reiser3 */
2527 || sfs.f_type == 0x01021994 /* tempfs */
2528 || sfs.f_type == 0x58465342 /* xfs */)
2529 return;
2530
2531 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2532 ev_timer_again (EV_A_ &w->timer); 3078 ev_timer_again (EV_A_ &w->timer);
2533 } 3079 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2534} 3080}
2535 3081
2536static void noinline 3082static void noinline
2537infy_del (EV_P_ ev_stat *w) 3083infy_del (EV_P_ ev_stat *w)
2538{ 3084{
… …
2541 3087
2542 if (wd < 0) 3088 if (wd < 0)
2543 return; 3089 return;
2544 3090
2545 w->wd = -2; 3091 w->wd = -2;
2546 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3092 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2547 wlist_del (&fs_hash [slot].head, (WL)w); 3093 wlist_del (&fs_hash [slot].head, (WL)w);
2548 3094
2549 /* remove this watcher, if others are watching it, they will rearm */ 3095 /* remove this watcher, if others are watching it, they will rearm */
2550 inotify_rm_watch (fs_fd, wd); 3096 inotify_rm_watch (fs_fd, wd);
2551} 3097}
… …
2553static void noinline 3099static void noinline
2554infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3100infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2555{ 3101{
2556 if (slot < 0) 3102 if (slot < 0)
2557 /* overflow, need to check for all hash slots */ 3103 /* overflow, need to check for all hash slots */
2558 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3104 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2559 infy_wd (EV_A_ slot, wd, ev); 3105 infy_wd (EV_A_ slot, wd, ev);
2560 else 3106 else
2561 { 3107 {
2562 WL w_; 3108 WL w_;
2563 3109
2564 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3110 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2565 { 3111 {
2566 ev_stat *w = (ev_stat *)w_; 3112 ev_stat *w = (ev_stat *)w_;
2567 w_ = w_->next; /* lets us remove this watcher and all before it */ 3113 w_ = w_->next; /* lets us remove this watcher and all before it */
2568 3114
2569 if (w->wd == wd || wd == -1) 3115 if (w->wd == wd || wd == -1)
2570 { 3116 {
2571 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3117 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2572 { 3118 {
2573 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3119 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2574 w->wd = -1; 3120 w->wd = -1;
2575 infy_add (EV_A_ w); /* re-add, no matter what */ 3121 infy_add (EV_A_ w); /* re-add, no matter what */
2576 } 3122 }
2577 3123
2578 stat_timer_cb (EV_A_ &w->timer, 0); 3124 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2583 3129
2584static void 3130static void
2585infy_cb (EV_P_ ev_io *w, int revents) 3131infy_cb (EV_P_ ev_io *w, int revents)
2586{ 3132{
2587 char buf [EV_INOTIFY_BUFSIZE]; 3133 char buf [EV_INOTIFY_BUFSIZE];
2588 struct inotify_event *ev = (struct inotify_event *)buf;
2589 int ofs; 3134 int ofs;
2590 int len = read (fs_fd, buf, sizeof (buf)); 3135 int len = read (fs_fd, buf, sizeof (buf));
2591 3136
2592 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3137 for (ofs = 0; ofs < len; )
3138 {
3139 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2593 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3140 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3141 ofs += sizeof (struct inotify_event) + ev->len;
3142 }
2594} 3143}
2595 3144
2596void inline_size 3145inline_size void
2597check_2625 (EV_P) 3146ev_check_2625 (EV_P)
2598{ 3147{
2599 /* kernels < 2.6.25 are borked 3148 /* kernels < 2.6.25 are borked
2600 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3149 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601 */ 3150 */
2602 struct utsname buf; 3151 if (ev_linux_version () < 0x020619)
2603 int major, minor, micro;
2604
2605 if (uname (&buf))
2606 return; 3152 return;
2607 3153
2608 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2609 return;
2610
2611 if (major < 2
2612 || (major == 2 && minor < 6)
2613 || (major == 2 && minor == 6 && micro < 25))
2614 return;
2615
2616 fs_2625 = 1; 3154 fs_2625 = 1;
2617} 3155}
2618 3156
2619void inline_size 3157inline_size int
3158infy_newfd (void)
3159{
3160#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3161 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3162 if (fd >= 0)
3163 return fd;
3164#endif
3165 return inotify_init ();
3166}
3167
3168inline_size void
2620infy_init (EV_P) 3169infy_init (EV_P)
2621{ 3170{
2622 if (fs_fd != -2) 3171 if (fs_fd != -2)
2623 return; 3172 return;
2624 3173
2625 fs_fd = -1; 3174 fs_fd = -1;
2626 3175
2627 check_2625 (EV_A); 3176 ev_check_2625 (EV_A);
2628 3177
2629 fs_fd = inotify_init (); 3178 fs_fd = infy_newfd ();
2630 3179
2631 if (fs_fd >= 0) 3180 if (fs_fd >= 0)
2632 { 3181 {
3182 fd_intern (fs_fd);
2633 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3183 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2634 ev_set_priority (&fs_w, EV_MAXPRI); 3184 ev_set_priority (&fs_w, EV_MAXPRI);
2635 ev_io_start (EV_A_ &fs_w); 3185 ev_io_start (EV_A_ &fs_w);
3186 ev_unref (EV_A);
2636 } 3187 }
2637} 3188}
2638 3189
2639void inline_size 3190inline_size void
2640infy_fork (EV_P) 3191infy_fork (EV_P)
2641{ 3192{
2642 int slot; 3193 int slot;
2643 3194
2644 if (fs_fd < 0) 3195 if (fs_fd < 0)
2645 return; 3196 return;
2646 3197
3198 ev_ref (EV_A);
3199 ev_io_stop (EV_A_ &fs_w);
2647 close (fs_fd); 3200 close (fs_fd);
2648 fs_fd = inotify_init (); 3201 fs_fd = infy_newfd ();
2649 3202
3203 if (fs_fd >= 0)
3204 {
3205 fd_intern (fs_fd);
3206 ev_io_set (&fs_w, fs_fd, EV_READ);
3207 ev_io_start (EV_A_ &fs_w);
3208 ev_unref (EV_A);
3209 }
3210
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3211 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 { 3212 {
2652 WL w_ = fs_hash [slot].head; 3213 WL w_ = fs_hash [slot].head;
2653 fs_hash [slot].head = 0; 3214 fs_hash [slot].head = 0;
2654 3215
2655 while (w_) 3216 while (w_)
… …
2660 w->wd = -1; 3221 w->wd = -1;
2661 3222
2662 if (fs_fd >= 0) 3223 if (fs_fd >= 0)
2663 infy_add (EV_A_ w); /* re-add, no matter what */ 3224 infy_add (EV_A_ w); /* re-add, no matter what */
2664 else 3225 else
3226 {
3227 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3228 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2665 ev_timer_again (EV_A_ &w->timer); 3229 ev_timer_again (EV_A_ &w->timer);
3230 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3231 }
2666 } 3232 }
2667 } 3233 }
2668} 3234}
2669 3235
2670#endif 3236#endif
… …
2687static void noinline 3253static void noinline
2688stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3254stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2689{ 3255{
2690 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3256 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2691 3257
2692 /* we copy this here each the time so that */ 3258 ev_statdata prev = w->attr;
2693 /* prev has the old value when the callback gets invoked */
2694 w->prev = w->attr;
2695 ev_stat_stat (EV_A_ w); 3259 ev_stat_stat (EV_A_ w);
2696 3260
2697 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3261 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2698 if ( 3262 if (
2699 w->prev.st_dev != w->attr.st_dev 3263 prev.st_dev != w->attr.st_dev
2700 || w->prev.st_ino != w->attr.st_ino 3264 || prev.st_ino != w->attr.st_ino
2701 || w->prev.st_mode != w->attr.st_mode 3265 || prev.st_mode != w->attr.st_mode
2702 || w->prev.st_nlink != w->attr.st_nlink 3266 || prev.st_nlink != w->attr.st_nlink
2703 || w->prev.st_uid != w->attr.st_uid 3267 || prev.st_uid != w->attr.st_uid
2704 || w->prev.st_gid != w->attr.st_gid 3268 || prev.st_gid != w->attr.st_gid
2705 || w->prev.st_rdev != w->attr.st_rdev 3269 || prev.st_rdev != w->attr.st_rdev
2706 || w->prev.st_size != w->attr.st_size 3270 || prev.st_size != w->attr.st_size
2707 || w->prev.st_atime != w->attr.st_atime 3271 || prev.st_atime != w->attr.st_atime
2708 || w->prev.st_mtime != w->attr.st_mtime 3272 || prev.st_mtime != w->attr.st_mtime
2709 || w->prev.st_ctime != w->attr.st_ctime 3273 || prev.st_ctime != w->attr.st_ctime
2710 ) { 3274 ) {
3275 /* we only update w->prev on actual differences */
3276 /* in case we test more often than invoke the callback, */
3277 /* to ensure that prev is always different to attr */
3278 w->prev = prev;
3279
2711 #if EV_USE_INOTIFY 3280 #if EV_USE_INOTIFY
2712 if (fs_fd >= 0) 3281 if (fs_fd >= 0)
2713 { 3282 {
2714 infy_del (EV_A_ w); 3283 infy_del (EV_A_ w);
2715 infy_add (EV_A_ w); 3284 infy_add (EV_A_ w);
… …
2740 3309
2741 if (fs_fd >= 0) 3310 if (fs_fd >= 0)
2742 infy_add (EV_A_ w); 3311 infy_add (EV_A_ w);
2743 else 3312 else
2744#endif 3313#endif
3314 {
2745 ev_timer_again (EV_A_ &w->timer); 3315 ev_timer_again (EV_A_ &w->timer);
3316 ev_unref (EV_A);
3317 }
2746 3318
2747 ev_start (EV_A_ (W)w, 1); 3319 ev_start (EV_A_ (W)w, 1);
2748 3320
2749 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
2750} 3322}
… …
2759 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2760 3332
2761#if EV_USE_INOTIFY 3333#if EV_USE_INOTIFY
2762 infy_del (EV_A_ w); 3334 infy_del (EV_A_ w);
2763#endif 3335#endif
3336
3337 if (ev_is_active (&w->timer))
3338 {
3339 ev_ref (EV_A);
2764 ev_timer_stop (EV_A_ &w->timer); 3340 ev_timer_stop (EV_A_ &w->timer);
3341 }
2765 3342
2766 ev_stop (EV_A_ (W)w); 3343 ev_stop (EV_A_ (W)w);
2767 3344
2768 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2769} 3346}
… …
2814 3391
2815 EV_FREQUENT_CHECK; 3392 EV_FREQUENT_CHECK;
2816} 3393}
2817#endif 3394#endif
2818 3395
3396#if EV_PREPARE_ENABLE
2819void 3397void
2820ev_prepare_start (EV_P_ ev_prepare *w) 3398ev_prepare_start (EV_P_ ev_prepare *w)
2821{ 3399{
2822 if (expect_false (ev_is_active (w))) 3400 if (expect_false (ev_is_active (w)))
2823 return; 3401 return;
… …
2849 3427
2850 ev_stop (EV_A_ (W)w); 3428 ev_stop (EV_A_ (W)w);
2851 3429
2852 EV_FREQUENT_CHECK; 3430 EV_FREQUENT_CHECK;
2853} 3431}
3432#endif
2854 3433
3434#if EV_CHECK_ENABLE
2855void 3435void
2856ev_check_start (EV_P_ ev_check *w) 3436ev_check_start (EV_P_ ev_check *w)
2857{ 3437{
2858 if (expect_false (ev_is_active (w))) 3438 if (expect_false (ev_is_active (w)))
2859 return; 3439 return;
… …
2885 3465
2886 ev_stop (EV_A_ (W)w); 3466 ev_stop (EV_A_ (W)w);
2887 3467
2888 EV_FREQUENT_CHECK; 3468 EV_FREQUENT_CHECK;
2889} 3469}
3470#endif
2890 3471
2891#if EV_EMBED_ENABLE 3472#if EV_EMBED_ENABLE
2892void noinline 3473void noinline
2893ev_embed_sweep (EV_P_ ev_embed *w) 3474ev_embed_sweep (EV_P_ ev_embed *w)
2894{ 3475{
2895 ev_loop (w->other, EVLOOP_NONBLOCK); 3476 ev_run (w->other, EVRUN_NOWAIT);
2896} 3477}
2897 3478
2898static void 3479static void
2899embed_io_cb (EV_P_ ev_io *io, int revents) 3480embed_io_cb (EV_P_ ev_io *io, int revents)
2900{ 3481{
2901 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3482 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2902 3483
2903 if (ev_cb (w)) 3484 if (ev_cb (w))
2904 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3485 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2905 else 3486 else
2906 ev_loop (w->other, EVLOOP_NONBLOCK); 3487 ev_run (w->other, EVRUN_NOWAIT);
2907} 3488}
2908 3489
2909static void 3490static void
2910embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3491embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911{ 3492{
2912 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3493 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913 3494
2914 { 3495 {
2915 struct ev_loop *loop = w->other; 3496 EV_P = w->other;
2916 3497
2917 while (fdchangecnt) 3498 while (fdchangecnt)
2918 { 3499 {
2919 fd_reify (EV_A); 3500 fd_reify (EV_A);
2920 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3501 ev_run (EV_A_ EVRUN_NOWAIT);
2921 } 3502 }
2922 } 3503 }
2923} 3504}
2924 3505
2925static void 3506static void
… …
2928 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3509 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929 3510
2930 ev_embed_stop (EV_A_ w); 3511 ev_embed_stop (EV_A_ w);
2931 3512
2932 { 3513 {
2933 struct ev_loop *loop = w->other; 3514 EV_P = w->other;
2934 3515
2935 ev_loop_fork (EV_A); 3516 ev_loop_fork (EV_A);
2936 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3517 ev_run (EV_A_ EVRUN_NOWAIT);
2937 } 3518 }
2938 3519
2939 ev_embed_start (EV_A_ w); 3520 ev_embed_start (EV_A_ w);
2940} 3521}
2941 3522
… …
2952{ 3533{
2953 if (expect_false (ev_is_active (w))) 3534 if (expect_false (ev_is_active (w)))
2954 return; 3535 return;
2955 3536
2956 { 3537 {
2957 struct ev_loop *loop = w->other; 3538 EV_P = w->other;
2958 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3539 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2959 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3540 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2960 } 3541 }
2961 3542
2962 EV_FREQUENT_CHECK; 3543 EV_FREQUENT_CHECK;
… …
2989 3570
2990 ev_io_stop (EV_A_ &w->io); 3571 ev_io_stop (EV_A_ &w->io);
2991 ev_prepare_stop (EV_A_ &w->prepare); 3572 ev_prepare_stop (EV_A_ &w->prepare);
2992 ev_fork_stop (EV_A_ &w->fork); 3573 ev_fork_stop (EV_A_ &w->fork);
2993 3574
3575 ev_stop (EV_A_ (W)w);
3576
2994 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2995} 3578}
2996#endif 3579#endif
2997 3580
2998#if EV_FORK_ENABLE 3581#if EV_FORK_ENABLE
… …
3031 3614
3032 EV_FREQUENT_CHECK; 3615 EV_FREQUENT_CHECK;
3033} 3616}
3034#endif 3617#endif
3035 3618
3036#if EV_ASYNC_ENABLE 3619#if EV_CLEANUP_ENABLE
3037void 3620void
3038ev_async_start (EV_P_ ev_async *w) 3621ev_cleanup_start (EV_P_ ev_cleanup *w)
3039{ 3622{
3040 if (expect_false (ev_is_active (w))) 3623 if (expect_false (ev_is_active (w)))
3041 return; 3624 return;
3625
3626 EV_FREQUENT_CHECK;
3627
3628 ev_start (EV_A_ (W)w, ++cleanupcnt);
3629 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3630 cleanups [cleanupcnt - 1] = w;
3631
3632 /* cleanup watchers should never keep a refcount on the loop */
3633 ev_unref (EV_A);
3634 EV_FREQUENT_CHECK;
3635}
3636
3637void
3638ev_cleanup_stop (EV_P_ ev_cleanup *w)
3639{
3640 clear_pending (EV_A_ (W)w);
3641 if (expect_false (!ev_is_active (w)))
3642 return;
3643
3644 EV_FREQUENT_CHECK;
3645 ev_ref (EV_A);
3646
3647 {
3648 int active = ev_active (w);
3649
3650 cleanups [active - 1] = cleanups [--cleanupcnt];
3651 ev_active (cleanups [active - 1]) = active;
3652 }
3653
3654 ev_stop (EV_A_ (W)w);
3655
3656 EV_FREQUENT_CHECK;
3657}
3658#endif
3659
3660#if EV_ASYNC_ENABLE
3661void
3662ev_async_start (EV_P_ ev_async *w)
3663{
3664 if (expect_false (ev_is_active (w)))
3665 return;
3666
3667 w->sent = 0;
3042 3668
3043 evpipe_init (EV_A); 3669 evpipe_init (EV_A);
3044 3670
3045 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
3046 3672
… …
3074 3700
3075void 3701void
3076ev_async_send (EV_P_ ev_async *w) 3702ev_async_send (EV_P_ ev_async *w)
3077{ 3703{
3078 w->sent = 1; 3704 w->sent = 1;
3079 evpipe_write (EV_A_ &gotasync); 3705 evpipe_write (EV_A_ &async_pending);
3080} 3706}
3081#endif 3707#endif
3082 3708
3083/*****************************************************************************/ 3709/*****************************************************************************/
3084 3710
… …
3124{ 3750{
3125 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3126 3752
3127 if (expect_false (!once)) 3753 if (expect_false (!once))
3128 { 3754 {
3129 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3755 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3130 return; 3756 return;
3131 } 3757 }
3132 3758
3133 once->cb = cb; 3759 once->cb = cb;
3134 once->arg = arg; 3760 once->arg = arg;
… …
3146 ev_timer_set (&once->to, timeout, 0.); 3772 ev_timer_set (&once->to, timeout, 0.);
3147 ev_timer_start (EV_A_ &once->to); 3773 ev_timer_start (EV_A_ &once->to);
3148 } 3774 }
3149} 3775}
3150 3776
3777/*****************************************************************************/
3778
3779#if EV_WALK_ENABLE
3780void
3781ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3782{
3783 int i, j;
3784 ev_watcher_list *wl, *wn;
3785
3786 if (types & (EV_IO | EV_EMBED))
3787 for (i = 0; i < anfdmax; ++i)
3788 for (wl = anfds [i].head; wl; )
3789 {
3790 wn = wl->next;
3791
3792#if EV_EMBED_ENABLE
3793 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3794 {
3795 if (types & EV_EMBED)
3796 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3797 }
3798 else
3799#endif
3800#if EV_USE_INOTIFY
3801 if (ev_cb ((ev_io *)wl) == infy_cb)
3802 ;
3803 else
3804#endif
3805 if ((ev_io *)wl != &pipe_w)
3806 if (types & EV_IO)
3807 cb (EV_A_ EV_IO, wl);
3808
3809 wl = wn;
3810 }
3811
3812 if (types & (EV_TIMER | EV_STAT))
3813 for (i = timercnt + HEAP0; i-- > HEAP0; )
3814#if EV_STAT_ENABLE
3815 /*TODO: timer is not always active*/
3816 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3817 {
3818 if (types & EV_STAT)
3819 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3820 }
3821 else
3822#endif
3823 if (types & EV_TIMER)
3824 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3825
3826#if EV_PERIODIC_ENABLE
3827 if (types & EV_PERIODIC)
3828 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3829 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3830#endif
3831
3832#if EV_IDLE_ENABLE
3833 if (types & EV_IDLE)
3834 for (j = NUMPRI; i--; )
3835 for (i = idlecnt [j]; i--; )
3836 cb (EV_A_ EV_IDLE, idles [j][i]);
3837#endif
3838
3839#if EV_FORK_ENABLE
3840 if (types & EV_FORK)
3841 for (i = forkcnt; i--; )
3842 if (ev_cb (forks [i]) != embed_fork_cb)
3843 cb (EV_A_ EV_FORK, forks [i]);
3844#endif
3845
3846#if EV_ASYNC_ENABLE
3847 if (types & EV_ASYNC)
3848 for (i = asynccnt; i--; )
3849 cb (EV_A_ EV_ASYNC, asyncs [i]);
3850#endif
3851
3852#if EV_PREPARE_ENABLE
3853 if (types & EV_PREPARE)
3854 for (i = preparecnt; i--; )
3855# if EV_EMBED_ENABLE
3856 if (ev_cb (prepares [i]) != embed_prepare_cb)
3857# endif
3858 cb (EV_A_ EV_PREPARE, prepares [i]);
3859#endif
3860
3861#if EV_CHECK_ENABLE
3862 if (types & EV_CHECK)
3863 for (i = checkcnt; i--; )
3864 cb (EV_A_ EV_CHECK, checks [i]);
3865#endif
3866
3867#if EV_SIGNAL_ENABLE
3868 if (types & EV_SIGNAL)
3869 for (i = 0; i < EV_NSIG - 1; ++i)
3870 for (wl = signals [i].head; wl; )
3871 {
3872 wn = wl->next;
3873 cb (EV_A_ EV_SIGNAL, wl);
3874 wl = wn;
3875 }
3876#endif
3877
3878#if EV_CHILD_ENABLE
3879 if (types & EV_CHILD)
3880 for (i = (EV_PID_HASHSIZE); i--; )
3881 for (wl = childs [i]; wl; )
3882 {
3883 wn = wl->next;
3884 cb (EV_A_ EV_CHILD, wl);
3885 wl = wn;
3886 }
3887#endif
3888/* EV_STAT 0x00001000 /* stat data changed */
3889/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3890}
3891#endif
3892
3151#if EV_MULTIPLICITY 3893#if EV_MULTIPLICITY
3152 #include "ev_wrap.h" 3894 #include "ev_wrap.h"
3153#endif 3895#endif
3154 3896
3155#ifdef __cplusplus 3897EV_CPP(})
3156}
3157#endif
3158 3898

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