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Comparing libev/ev.c (file contents):
Revision 1.284 by root, Wed Apr 15 17:49:26 2009 UTC vs.
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 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 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
… …
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#if EV_AVOID_STDIO
529static void noinline
530ev_printerr (const char *msg)
531{
532 write (STDERR_FILENO, msg, strlen (msg));
533}
534#endif
417 535
418static void (*syserr_cb)(const char *msg); 536static void (*syserr_cb)(const char *msg);
419 537
420void 538void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 539ev_set_syserr_cb (void (*cb)(const char *msg))
… …
431 549
432 if (syserr_cb) 550 if (syserr_cb)
433 syserr_cb (msg); 551 syserr_cb (msg);
434 else 552 else
435 { 553 {
554#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg);
558 ev_printerr (": ");
559 ev_printerr (err);
560 ev_printerr ("\n");
561#else
436 perror (msg); 562 perror (msg);
563#endif
437 abort (); 564 abort ();
438 } 565 }
439} 566}
440 567
441static void * 568static void *
442ev_realloc_emul (void *ptr, long size) 569ev_realloc_emul (void *ptr, long size)
443{ 570{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
444 /* some systems, notably openbsd and darwin, fail to properly 574 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 575 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 576 * the single unix specification, so work around them here.
447 */ 577 */
448 578
449 if (size) 579 if (size)
450 return realloc (ptr, size); 580 return realloc (ptr, size);
451 581
452 free (ptr); 582 free (ptr);
453 return 0; 583 return 0;
584#endif
454} 585}
455 586
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 588
458void 589void
… …
466{ 597{
467 ptr = alloc (ptr, size); 598 ptr = alloc (ptr, size);
468 599
469 if (!ptr && size) 600 if (!ptr && size)
470 { 601 {
602#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n");
604#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
606#endif
472 abort (); 607 abort ();
473 } 608 }
474 609
475 return ptr; 610 return ptr;
476} 611}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 613#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 614#define ev_free(ptr) ev_realloc ((ptr), 0)
480 615
481/*****************************************************************************/ 616/*****************************************************************************/
482 617
618/* set in reify when reification needed */
619#define EV_ANFD_REIFY 1
620
621/* file descriptor info structure */
483typedef struct 622typedef struct
484{ 623{
485 WL head; 624 WL head;
486 unsigned char events; 625 unsigned char events; /* the events watched for */
487 unsigned char reify; 626 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 */ 627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 628 unsigned char unused;
490#if EV_USE_EPOLL 629#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 630 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 631#endif
493#if EV_SELECT_IS_WINSOCKET 632#if EV_SELECT_IS_WINSOCKET
494 SOCKET handle; 633 SOCKET handle;
495#endif 634#endif
496} ANFD; 635} ANFD;
497 636
637/* stores the pending event set for a given watcher */
498typedef struct 638typedef struct
499{ 639{
500 W w; 640 W w;
501 int events; 641 int events; /* the pending event set for the given watcher */
502} ANPENDING; 642} ANPENDING;
503 643
504#if EV_USE_INOTIFY 644#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 645/* hash table entry per inotify-id */
506typedef struct 646typedef struct
… …
509} ANFS; 649} ANFS;
510#endif 650#endif
511 651
512/* Heap Entry */ 652/* Heap Entry */
513#if EV_HEAP_CACHE_AT 653#if EV_HEAP_CACHE_AT
654 /* a heap element */
514 typedef struct { 655 typedef struct {
515 ev_tstamp at; 656 ev_tstamp at;
516 WT w; 657 WT w;
517 } ANHE; 658 } ANHE;
518 659
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 660 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 661 #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 */ 662 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 663#else
664 /* a heap element */
523 typedef WT ANHE; 665 typedef WT ANHE;
524 666
525 #define ANHE_w(he) (he) 667 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 668 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 669 #define ANHE_at_cache(he)
… …
551 693
552 static int ev_default_loop_ptr; 694 static int ev_default_loop_ptr;
553 695
554#endif 696#endif
555 697
698#if EV_FEATURE_API
699# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
700# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
701# define EV_INVOKE_PENDING invoke_cb (EV_A)
702#else
703# define EV_RELEASE_CB (void)0
704# define EV_ACQUIRE_CB (void)0
705# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
706#endif
707
708#define EVBREAK_RECURSE 0x80
709
556/*****************************************************************************/ 710/*****************************************************************************/
557 711
712#ifndef EV_HAVE_EV_TIME
558ev_tstamp 713ev_tstamp
559ev_time (void) 714ev_time (void)
560{ 715{
561#if EV_USE_REALTIME 716#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 717 if (expect_true (have_realtime))
… …
569 724
570 struct timeval tv; 725 struct timeval tv;
571 gettimeofday (&tv, 0); 726 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 727 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 728}
729#endif
574 730
575inline_size ev_tstamp 731inline_size ev_tstamp
576get_clock (void) 732get_clock (void)
577{ 733{
578#if EV_USE_MONOTONIC 734#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 757 if (delay > 0.)
602 { 758 {
603#if EV_USE_NANOSLEEP 759#if EV_USE_NANOSLEEP
604 struct timespec ts; 760 struct timespec ts;
605 761
606 ts.tv_sec = (time_t)delay; 762 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 763 nanosleep (&ts, 0);
610#elif defined(_WIN32) 764#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 765 Sleep ((unsigned long)(delay * 1e3));
612#else 766#else
613 struct timeval tv; 767 struct timeval tv;
614 768
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 */ 769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 770 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 771 /* by older ones */
772 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 773 select (0, 0, 0, 0, &tv);
622#endif 774#endif
623 } 775 }
624} 776}
625 777
626/*****************************************************************************/ 778/*****************************************************************************/
627 779
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 780#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 781
782/* find a suitable new size for the given array, */
783/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 784inline_size int
631array_nextsize (int elem, int cur, int cnt) 785array_nextsize (int elem, int cur, int cnt)
632{ 786{
633 int ncur = cur + 1; 787 int ncur = cur + 1;
634 788
… …
680#define array_free(stem, idx) \ 834#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 835 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 836
683/*****************************************************************************/ 837/*****************************************************************************/
684 838
839/* dummy callback for pending events */
840static void noinline
841pendingcb (EV_P_ ev_prepare *w, int revents)
842{
843}
844
685void noinline 845void noinline
686ev_feed_event (EV_P_ void *w, int revents) 846ev_feed_event (EV_P_ void *w, int revents)
687{ 847{
688 W w_ = (W)w; 848 W w_ = (W)w;
689 int pri = ABSPRI (w_); 849 int pri = ABSPRI (w_);
… …
724} 884}
725 885
726/*****************************************************************************/ 886/*****************************************************************************/
727 887
728inline_speed void 888inline_speed void
729fd_event (EV_P_ int fd, int revents) 889fd_event_nocheck (EV_P_ int fd, int revents)
730{ 890{
731 ANFD *anfd = anfds + fd; 891 ANFD *anfd = anfds + fd;
732 ev_io *w; 892 ev_io *w;
733 893
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 894 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 898 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 899 ev_feed_event (EV_A_ (W)w, ev);
740 } 900 }
741} 901}
742 902
903/* do not submit kernel events for fds that have reify set */
904/* because that means they changed while we were polling for new events */
905inline_speed void
906fd_event (EV_P_ int fd, int revents)
907{
908 ANFD *anfd = anfds + fd;
909
910 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents);
912}
913
743void 914void
744ev_feed_fd_event (EV_P_ int fd, int revents) 915ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 916{
746 if (fd >= 0 && fd < anfdmax) 917 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 918 fd_event_nocheck (EV_A_ fd, revents);
748} 919}
749 920
921/* make sure the external fd watch events are in-sync */
922/* with the kernel/libev internal state */
750inline_size void 923inline_size void
751fd_reify (EV_P) 924fd_reify (EV_P)
752{ 925{
753 int i; 926 int i;
754 927
… …
756 { 929 {
757 int fd = fdchanges [i]; 930 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 931 ANFD *anfd = anfds + fd;
759 ev_io *w; 932 ev_io *w;
760 933
761 unsigned char events = 0; 934 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify;
762 936
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 937 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 938
766#if EV_SELECT_IS_WINSOCKET 939#if EV_SELECT_IS_WINSOCKET
767 if (events) 940 if (o_reify & EV__IOFDSET)
768 { 941 {
769 unsigned long arg; 942 unsigned long arg;
770 #ifdef EV_FD_TO_WIN32_HANDLE
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
772 #else
773 anfd->handle = _get_osfhandle (fd);
774 #endif
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
776 } 945 }
777#endif 946#endif
778 947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
779 { 949 {
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events; 950 anfd->events = 0;
785 951
786 if (o_events != events || o_reify & EV__IOFDSET) 952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
953 anfd->events |= (unsigned char)w->events;
954
955 if (o_events != anfd->events)
956 o_reify = EV__IOFDSET; /* actually |= */
957 }
958
959 if (o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 960 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 961 }
790 962
791 fdchangecnt = 0; 963 fdchangecnt = 0;
792} 964}
793 965
966/* something about the given fd changed */
794inline_size void 967inline_size void
795fd_change (EV_P_ int fd, int flags) 968fd_change (EV_P_ int fd, int flags)
796{ 969{
797 unsigned char reify = anfds [fd].reify; 970 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 971 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 976 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 977 fdchanges [fdchangecnt - 1] = fd;
805 } 978 }
806} 979}
807 980
981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 982inline_speed void
809fd_kill (EV_P_ int fd) 983fd_kill (EV_P_ int fd)
810{ 984{
811 ev_io *w; 985 ev_io *w;
812 986
… …
815 ev_io_stop (EV_A_ w); 989 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 991 }
818} 992}
819 993
994/* check whether the given fd is actually valid, for error recovery */
820inline_size int 995inline_size int
821fd_valid (int fd) 996fd_valid (int fd)
822{ 997{
823#ifdef _WIN32 998#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 999 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1000#else
826 return fcntl (fd, F_GETFD) != -1; 1001 return fcntl (fd, F_GETFD) != -1;
827#endif 1002#endif
828} 1003}
829 1004
… …
847 1022
848 for (fd = anfdmax; fd--; ) 1023 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1024 if (anfds [fd].events)
850 { 1025 {
851 fd_kill (EV_A_ fd); 1026 fd_kill (EV_A_ fd);
852 return; 1027 break;
853 } 1028 }
854} 1029}
855 1030
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1031/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1032static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1037 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1038 if (anfds [fd].events)
864 { 1039 {
865 anfds [fd].events = 0; 1040 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1041 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1042 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1043 }
869} 1044}
870 1045
1046/* used to prepare libev internal fd's */
1047/* this is not fork-safe */
1048inline_speed void
1049fd_intern (int fd)
1050{
1051#ifdef _WIN32
1052 unsigned long arg = 1;
1053 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1054#else
1055 fcntl (fd, F_SETFD, FD_CLOEXEC);
1056 fcntl (fd, F_SETFL, O_NONBLOCK);
1057#endif
1058}
1059
871/*****************************************************************************/ 1060/*****************************************************************************/
872 1061
873/* 1062/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1063 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1064 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1065 * the branching factor of the d-tree.
877 */ 1066 */
878 1067
879/* 1068/*
… …
947 1136
948 for (;;) 1137 for (;;)
949 { 1138 {
950 int c = k << 1; 1139 int c = k << 1;
951 1140
952 if (c > N + HEAP0 - 1) 1141 if (c >= N + HEAP0)
953 break; 1142 break;
954 1143
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1144 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1145 ? 1 : 0;
957 1146
… …
989 1178
990 heap [k] = he; 1179 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1180 ev_active (ANHE_w (he)) = k;
992} 1181}
993 1182
1183/* move an element suitably so it is in a correct place */
994inline_size void 1184inline_size void
995adjustheap (ANHE *heap, int N, int k) 1185adjustheap (ANHE *heap, int N, int k)
996{ 1186{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1187 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1188 upheap (heap, k);
999 else 1189 else
1000 downheap (heap, N, k); 1190 downheap (heap, N, k);
1001} 1191}
1002 1192
… …
1012 upheap (heap, i + HEAP0); 1202 upheap (heap, i + HEAP0);
1013} 1203}
1014 1204
1015/*****************************************************************************/ 1205/*****************************************************************************/
1016 1206
1207/* associate signal watchers to a signal signal */
1017typedef struct 1208typedef struct
1018{ 1209{
1210 EV_ATOMIC_T pending;
1211#if EV_MULTIPLICITY
1212 EV_P;
1213#endif
1019 WL head; 1214 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1215} ANSIG;
1022 1216
1023static ANSIG *signals; 1217static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1218
1028/*****************************************************************************/ 1219/*****************************************************************************/
1029 1220
1030inline_speed void 1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1222
1042static void noinline 1223static void noinline
1043evpipe_init (EV_P) 1224evpipe_init (EV_P)
1044{ 1225{
1045 if (!ev_is_active (&pipeev)) 1226 if (!ev_is_active (&pipe_w))
1046 { 1227 {
1047#if EV_USE_EVENTFD 1228# if EV_USE_EVENTFD
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1231 evfd = eventfd (0, 0);
1232
1233 if (evfd >= 0)
1049 { 1234 {
1050 evpipe [0] = -1; 1235 evpipe [0] = -1;
1051 fd_intern (evfd); 1236 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1237 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1238 }
1054 else 1239 else
1055#endif 1240# endif
1056 { 1241 {
1057 while (pipe (evpipe)) 1242 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1243 ev_syserr ("(libev) error creating signal/async pipe");
1059 1244
1060 fd_intern (evpipe [0]); 1245 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1246 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1247 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1248 }
1064 1249
1065 ev_io_start (EV_A_ &pipeev); 1250 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1252 }
1068} 1253}
1069 1254
1070inline_size void 1255inline_size void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1257{
1073 if (!*flag) 1258 if (!*flag)
1074 { 1259 {
1075 int old_errno = errno; /* save errno because write might clobber it */ 1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1076 1262
1077 *flag = 1; 1263 *flag = 1;
1078 1264
1079#if EV_USE_EVENTFD 1265#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1266 if (evfd >= 0)
… …
1082 uint64_t counter = 1; 1268 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1269 write (evfd, &counter, sizeof (uint64_t));
1084 } 1270 }
1085 else 1271 else
1086#endif 1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1088 1279
1089 errno = old_errno; 1280 errno = old_errno;
1090 } 1281 }
1091} 1282}
1092 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1093static void 1286static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1288{
1289 int i;
1290
1096#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1292 if (evfd >= 0)
1098 { 1293 {
1099 uint64_t counter; 1294 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
1101 } 1296 }
1102 else 1297 else
1103#endif 1298#endif
1104 { 1299 {
1105 char dummy; 1300 char dummy;
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1302 read (evpipe [0], &dummy, 1);
1107 } 1303 }
1108 1304
1109 if (gotsig && ev_is_default_loop (EV_A)) 1305 if (sig_pending)
1110 { 1306 {
1111 int signum; 1307 sig_pending = 0;
1112 gotsig = 0;
1113 1308
1114 for (signum = signalmax; signum--; ) 1309 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 1310 if (expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 1311 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1312 }
1118 1313
1119#if EV_ASYNC_ENABLE 1314#if EV_ASYNC_ENABLE
1120 if (gotasync) 1315 if (async_pending)
1121 { 1316 {
1122 int i; 1317 async_pending = 0;
1123 gotasync = 0;
1124 1318
1125 for (i = asynccnt; i--; ) 1319 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1320 if (asyncs [i]->sent)
1127 { 1321 {
1128 asyncs [i]->sent = 0; 1322 asyncs [i]->sent = 0;
… …
1136 1330
1137static void 1331static void
1138ev_sighandler (int signum) 1332ev_sighandler (int signum)
1139{ 1333{
1140#if EV_MULTIPLICITY 1334#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 1335 EV_P = signals [signum - 1].loop;
1142#endif 1336#endif
1143 1337
1144#if _WIN32 1338#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1339 signal (signum, ev_sighandler);
1146#endif 1340#endif
1147 1341
1148 signals [signum - 1].gotsig = 1; 1342 signals [signum - 1].pending = 1;
1149 evpipe_write (EV_A_ &gotsig); 1343 evpipe_write (EV_A_ &sig_pending);
1150} 1344}
1151 1345
1152void noinline 1346void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1347ev_feed_signal_event (EV_P_ int signum)
1154{ 1348{
1155 WL w; 1349 WL w;
1156 1350
1351 if (expect_false (signum <= 0 || signum > EV_NSIG))
1352 return;
1353
1354 --signum;
1355
1157#if EV_MULTIPLICITY 1356#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1357 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1358 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1359
1161 --signum; 1360 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1361 return;
1362#endif
1165 1363
1166 signals [signum].gotsig = 0; 1364 signals [signum].pending = 0;
1167 1365
1168 for (w = signals [signum].head; w; w = w->next) 1366 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1368}
1171 1369
1370#if EV_USE_SIGNALFD
1371static void
1372sigfdcb (EV_P_ ev_io *iow, int revents)
1373{
1374 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1375
1376 for (;;)
1377 {
1378 ssize_t res = read (sigfd, si, sizeof (si));
1379
1380 /* not ISO-C, as res might be -1, but works with SuS */
1381 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1382 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1383
1384 if (res < (ssize_t)sizeof (si))
1385 break;
1386 }
1387}
1388#endif
1389
1390#endif
1391
1172/*****************************************************************************/ 1392/*****************************************************************************/
1173 1393
1394#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1395static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1396
1178static ev_signal childev; 1397static ev_signal childev;
1179 1398
1180#ifndef WIFCONTINUED 1399#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1400# define WIFCONTINUED(status) 0
1182#endif 1401#endif
1183 1402
1403/* handle a single child status event */
1184inline_speed void 1404inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1405child_reap (EV_P_ int chain, int pid, int status)
1186{ 1406{
1187 ev_child *w; 1407 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1408 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1409
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1410 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1411 {
1192 if ((w->pid == pid || !w->pid) 1412 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1413 && (!traced || (w->flags & 1)))
1194 { 1414 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1415 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1422
1203#ifndef WCONTINUED 1423#ifndef WCONTINUED
1204# define WCONTINUED 0 1424# define WCONTINUED 0
1205#endif 1425#endif
1206 1426
1427/* called on sigchld etc., calls waitpid */
1207static void 1428static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1429childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1430{
1210 int pid, status; 1431 int pid, status;
1211 1432
… …
1219 /* make sure we are called again until all children have been reaped */ 1440 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1441 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1442 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1443
1223 child_reap (EV_A_ pid, pid, status); 1444 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1445 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1446 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1447}
1227 1448
1228#endif 1449#endif
1229 1450
… …
1296#ifdef __APPLE__ 1517#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1518 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1519 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1520 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1521#endif
1522#ifdef __FreeBSD__
1523 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1524#endif
1301 1525
1302 return flags; 1526 return flags;
1303} 1527}
1304 1528
1305unsigned int 1529unsigned int
… …
1318ev_backend (EV_P) 1542ev_backend (EV_P)
1319{ 1543{
1320 return backend; 1544 return backend;
1321} 1545}
1322 1546
1547#if EV_FEATURE_API
1323unsigned int 1548unsigned int
1324ev_loop_count (EV_P) 1549ev_iteration (EV_P)
1325{ 1550{
1326 return loop_count; 1551 return loop_count;
1327} 1552}
1328 1553
1554unsigned int
1555ev_depth (EV_P)
1556{
1557 return loop_depth;
1558}
1559
1329void 1560void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1562{
1332 io_blocktime = interval; 1563 io_blocktime = interval;
1333} 1564}
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1568{
1338 timeout_blocktime = interval; 1569 timeout_blocktime = interval;
1339} 1570}
1340 1571
1572void
1573ev_set_userdata (EV_P_ void *data)
1574{
1575 userdata = data;
1576}
1577
1578void *
1579ev_userdata (EV_P)
1580{
1581 return userdata;
1582}
1583
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1585{
1586 invoke_cb = invoke_pending_cb;
1587}
1588
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1590{
1591 release_cb = release;
1592 acquire_cb = acquire;
1593}
1594#endif
1595
1596/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1597static void noinline
1342loop_init (EV_P_ unsigned int flags) 1598loop_init (EV_P_ unsigned int flags)
1343{ 1599{
1344 if (!backend) 1600 if (!backend)
1345 { 1601 {
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1617 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1618 have_monotonic = 1;
1363 } 1619 }
1364#endif 1620#endif
1365 1621
1622 /* pid check not overridable via env */
1623#ifndef _WIN32
1624 if (flags & EVFLAG_FORKCHECK)
1625 curpid = getpid ();
1626#endif
1627
1628 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS"));
1632
1366 ev_rt_now = ev_time (); 1633 ev_rt_now = ev_time ();
1367 mn_now = get_clock (); 1634 mn_now = get_clock ();
1368 now_floor = mn_now; 1635 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now; 1636 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending;
1639#endif
1370 1640
1371 io_blocktime = 0.; 1641 io_blocktime = 0.;
1372 timeout_blocktime = 0.; 1642 timeout_blocktime = 0.;
1373 backend = 0; 1643 backend = 0;
1374 backend_fd = -1; 1644 backend_fd = -1;
1375 gotasync = 0; 1645 sig_pending = 0;
1646#if EV_ASYNC_ENABLE
1647 async_pending = 0;
1648#endif
1376#if EV_USE_INOTIFY 1649#if EV_USE_INOTIFY
1377 fs_fd = -2; 1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378#endif 1651#endif
1379 1652#if EV_USE_SIGNALFD
1380 /* pid check not overridable via env */ 1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid ();
1384#endif 1654#endif
1385
1386 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 1655
1391 if (!(flags & 0x0000ffffU)) 1656 if (!(flags & 0x0000ffffU))
1392 flags |= ev_recommended_backends (); 1657 flags |= ev_recommended_backends ();
1393 1658
1394#if EV_USE_PORT 1659#if EV_USE_PORT
… …
1405#endif 1670#endif
1406#if EV_USE_SELECT 1671#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1672 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1673#endif
1409 1674
1675 ev_prepare_init (&pending_w, pendingcb);
1676
1677#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1678 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1679 ev_set_priority (&pipe_w, EV_MAXPRI);
1680#endif
1412 } 1681 }
1413} 1682}
1414 1683
1684/* free up a loop structure */
1415static void noinline 1685static void noinline
1416loop_destroy (EV_P) 1686loop_destroy (EV_P)
1417{ 1687{
1418 int i; 1688 int i;
1419 1689
1420 if (ev_is_active (&pipeev)) 1690 if (ev_is_active (&pipe_w))
1421 { 1691 {
1422 ev_ref (EV_A); /* signal watcher */ 1692 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1693 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1694
1425#if EV_USE_EVENTFD 1695#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1696 if (evfd >= 0)
1427 close (evfd); 1697 close (evfd);
1428#endif 1698#endif
1429 1699
1430 if (evpipe [0] >= 0) 1700 if (evpipe [0] >= 0)
1431 { 1701 {
1432 close (evpipe [0]); 1702 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1703 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1704 }
1435 } 1705 }
1706
1707#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w))
1709 close (sigfd);
1710#endif
1436 1711
1437#if EV_USE_INOTIFY 1712#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1713 if (fs_fd >= 0)
1439 close (fs_fd); 1714 close (fs_fd);
1440#endif 1715#endif
… …
1464#if EV_IDLE_ENABLE 1739#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 1740 array_free (idle, [i]);
1466#endif 1741#endif
1467 } 1742 }
1468 1743
1469 ev_free (anfds); anfdmax = 0; 1744 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 1745
1471 /* have to use the microsoft-never-gets-it-right macro */ 1746 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 1747 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 1748 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 1749 array_free (timer, EMPTY);
… …
1505#endif 1780#endif
1506#if EV_USE_INOTIFY 1781#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 1782 infy_fork (EV_A);
1508#endif 1783#endif
1509 1784
1510 if (ev_is_active (&pipeev)) 1785 if (ev_is_active (&pipe_w))
1511 { 1786 {
1512 /* this "locks" the handlers against writing to the pipe */ 1787 /* this "locks" the handlers against writing to the pipe */
1513 /* while we modify the fd vars */ 1788 /* while we modify the fd vars */
1514 gotsig = 1; 1789 sig_pending = 1;
1515#if EV_ASYNC_ENABLE 1790#if EV_ASYNC_ENABLE
1516 gotasync = 1; 1791 async_pending = 1;
1517#endif 1792#endif
1518 1793
1519 ev_ref (EV_A); 1794 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 1795 ev_io_stop (EV_A_ &pipe_w);
1521 1796
1522#if EV_USE_EVENTFD 1797#if EV_USE_EVENTFD
1523 if (evfd >= 0) 1798 if (evfd >= 0)
1524 close (evfd); 1799 close (evfd);
1525#endif 1800#endif
1526 1801
1527 if (evpipe [0] >= 0) 1802 if (evpipe [0] >= 0)
1528 { 1803 {
1529 close (evpipe [0]); 1804 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 1806 }
1532 1807
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 1809 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 1810 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 1811 pipecb (EV_A_ &pipe_w, EV_READ);
1812#endif
1536 } 1813 }
1537 1814
1538 postfork = 0; 1815 postfork = 0;
1539} 1816}
1540 1817
1541#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1542 1819
1543struct ev_loop * 1820struct ev_loop *
1544ev_loop_new (unsigned int flags) 1821ev_loop_new (unsigned int flags)
1545{ 1822{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 1824
1548 memset (loop, 0, sizeof (struct ev_loop)); 1825 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 1826 loop_init (EV_A_ flags);
1551 1827
1552 if (ev_backend (EV_A)) 1828 if (ev_backend (EV_A))
1553 return loop; 1829 return EV_A;
1554 1830
1555 return 0; 1831 return 0;
1556} 1832}
1557 1833
1558void 1834void
… …
1565void 1841void
1566ev_loop_fork (EV_P) 1842ev_loop_fork (EV_P)
1567{ 1843{
1568 postfork = 1; /* must be in line with ev_default_fork */ 1844 postfork = 1; /* must be in line with ev_default_fork */
1569} 1845}
1846#endif /* multiplicity */
1570 1847
1571#if EV_VERIFY 1848#if EV_VERIFY
1572static void noinline 1849static void noinline
1573verify_watcher (EV_P_ W w) 1850verify_watcher (EV_P_ W w)
1574{ 1851{
… …
1602 verify_watcher (EV_A_ ws [cnt]); 1879 verify_watcher (EV_A_ ws [cnt]);
1603 } 1880 }
1604} 1881}
1605#endif 1882#endif
1606 1883
1884#if EV_FEATURE_API
1607void 1885void
1608ev_loop_verify (EV_P) 1886ev_verify (EV_P)
1609{ 1887{
1610#if EV_VERIFY 1888#if EV_VERIFY
1611 int i; 1889 int i;
1612 WL w; 1890 WL w;
1613 1891
… …
1652#if EV_ASYNC_ENABLE 1930#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 1931 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 1932 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 1933#endif
1656 1934
1935#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 1936 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 1937 array_verify (EV_A_ (W *)prepares, preparecnt);
1938#endif
1659 1939
1940#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 1941 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 1942 array_verify (EV_A_ (W *)checks, checkcnt);
1943#endif
1662 1944
1663# if 0 1945# if 0
1946#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1947 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1948 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1949#endif
1666# endif 1950# endif
1667#endif 1951#endif
1668} 1952}
1669 1953#endif
1670#endif /* multiplicity */
1671 1954
1672#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1673struct ev_loop * 1956struct ev_loop *
1674ev_default_loop_init (unsigned int flags) 1957ev_default_loop_init (unsigned int flags)
1675#else 1958#else
… …
1678#endif 1961#endif
1679{ 1962{
1680 if (!ev_default_loop_ptr) 1963 if (!ev_default_loop_ptr)
1681 { 1964 {
1682#if EV_MULTIPLICITY 1965#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1966 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 1967#else
1685 ev_default_loop_ptr = 1; 1968 ev_default_loop_ptr = 1;
1686#endif 1969#endif
1687 1970
1688 loop_init (EV_A_ flags); 1971 loop_init (EV_A_ flags);
1689 1972
1690 if (ev_backend (EV_A)) 1973 if (ev_backend (EV_A))
1691 { 1974 {
1692#ifndef _WIN32 1975#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 1976 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 1977 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 1978 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1979 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 1980#endif
… …
1705 1988
1706void 1989void
1707ev_default_destroy (void) 1990ev_default_destroy (void)
1708{ 1991{
1709#if EV_MULTIPLICITY 1992#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr; 1993 EV_P = ev_default_loop_ptr;
1711#endif 1994#endif
1712 1995
1713 ev_default_loop_ptr = 0; 1996 ev_default_loop_ptr = 0;
1714 1997
1715#ifndef _WIN32 1998#if EV_CHILD_ENABLE
1716 ev_ref (EV_A); /* child watcher */ 1999 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev); 2000 ev_signal_stop (EV_A_ &childev);
1718#endif 2001#endif
1719 2002
1720 loop_destroy (EV_A); 2003 loop_destroy (EV_A);
… …
1722 2005
1723void 2006void
1724ev_default_fork (void) 2007ev_default_fork (void)
1725{ 2008{
1726#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr; 2010 EV_P = ev_default_loop_ptr;
1728#endif 2011#endif
1729 2012
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2013 postfork = 1; /* must be in line with ev_loop_fork */
1731} 2014}
1732 2015
… …
1736ev_invoke (EV_P_ void *w, int revents) 2019ev_invoke (EV_P_ void *w, int revents)
1737{ 2020{
1738 EV_CB_INVOKE ((W)w, revents); 2021 EV_CB_INVOKE ((W)w, revents);
1739} 2022}
1740 2023
1741inline_speed void 2024unsigned int
1742call_pending (EV_P) 2025ev_pending_count (EV_P)
2026{
2027 int pri;
2028 unsigned int count = 0;
2029
2030 for (pri = NUMPRI; pri--; )
2031 count += pendingcnt [pri];
2032
2033 return count;
2034}
2035
2036void noinline
2037ev_invoke_pending (EV_P)
1743{ 2038{
1744 int pri; 2039 int pri;
1745 2040
1746 for (pri = NUMPRI; pri--; ) 2041 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2042 while (pendingcnt [pri])
1748 { 2043 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2045
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
1754 2048
1755 p->w->pending = 0; 2049 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2050 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2051 EV_FREQUENT_CHECK;
1758 }
1759 } 2052 }
1760} 2053}
1761 2054
1762#if EV_IDLE_ENABLE 2055#if EV_IDLE_ENABLE
2056/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */
1763inline_size void 2058inline_size void
1764idle_reify (EV_P) 2059idle_reify (EV_P)
1765{ 2060{
1766 if (expect_false (idleall)) 2061 if (expect_false (idleall))
1767 { 2062 {
… …
1780 } 2075 }
1781 } 2076 }
1782} 2077}
1783#endif 2078#endif
1784 2079
2080/* make timers pending */
1785inline_size void 2081inline_size void
1786timers_reify (EV_P) 2082timers_reify (EV_P)
1787{ 2083{
1788 EV_FREQUENT_CHECK; 2084 EV_FREQUENT_CHECK;
1789 2085
… …
1813 EV_FREQUENT_CHECK; 2109 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2110 feed_reverse (EV_A_ (W)w);
1815 } 2111 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2112 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2113
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2114 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2115 }
1820} 2116}
1821 2117
1822#if EV_PERIODIC_ENABLE 2118#if EV_PERIODIC_ENABLE
2119/* make periodics pending */
1823inline_size void 2120inline_size void
1824periodics_reify (EV_P) 2121periodics_reify (EV_P)
1825{ 2122{
1826 EV_FREQUENT_CHECK; 2123 EV_FREQUENT_CHECK;
1827 2124
… …
1874 2171
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2172 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2173 }
1877} 2174}
1878 2175
2176/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2178static void noinline
1880periodics_reschedule (EV_P) 2179periodics_reschedule (EV_P)
1881{ 2180{
1882 int i; 2181 int i;
1883 2182
… …
1896 2195
1897 reheap (periodics, periodiccnt); 2196 reheap (periodics, periodiccnt);
1898} 2197}
1899#endif 2198#endif
1900 2199
2200/* adjust all timers by a given offset */
2201static void noinline
2202timers_reschedule (EV_P_ ev_tstamp adjust)
2203{
2204 int i;
2205
2206 for (i = 0; i < timercnt; ++i)
2207 {
2208 ANHE *he = timers + i + HEAP0;
2209 ANHE_w (*he)->at += adjust;
2210 ANHE_at_cache (*he);
2211 }
2212}
2213
2214/* fetch new monotonic and realtime times from the kernel */
2215/* also detect if there was a timejump, and act accordingly */
1901inline_speed void 2216inline_speed void
1902time_update (EV_P_ ev_tstamp max_block) 2217time_update (EV_P_ ev_tstamp max_block)
1903{ 2218{
1904 int i;
1905
1906#if EV_USE_MONOTONIC 2219#if EV_USE_MONOTONIC
1907 if (expect_true (have_monotonic)) 2220 if (expect_true (have_monotonic))
1908 { 2221 {
2222 int i;
1909 ev_tstamp odiff = rtmn_diff; 2223 ev_tstamp odiff = rtmn_diff;
1910 2224
1911 mn_now = get_clock (); 2225 mn_now = get_clock ();
1912 2226
1913 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2227 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1939 ev_rt_now = ev_time (); 2253 ev_rt_now = ev_time ();
1940 mn_now = get_clock (); 2254 mn_now = get_clock ();
1941 now_floor = mn_now; 2255 now_floor = mn_now;
1942 } 2256 }
1943 2257
2258 /* no timer adjustment, as the monotonic clock doesn't jump */
2259 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1944# if EV_PERIODIC_ENABLE 2260# if EV_PERIODIC_ENABLE
1945 periodics_reschedule (EV_A); 2261 periodics_reschedule (EV_A);
1946# endif 2262# endif
1947 /* no timer adjustment, as the monotonic clock doesn't jump */
1948 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1949 } 2263 }
1950 else 2264 else
1951#endif 2265#endif
1952 { 2266 {
1953 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1954 2268
1955 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2269 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1956 { 2270 {
2271 /* adjust timers. this is easy, as the offset is the same for all of them */
2272 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1957#if EV_PERIODIC_ENABLE 2273#if EV_PERIODIC_ENABLE
1958 periodics_reschedule (EV_A); 2274 periodics_reschedule (EV_A);
1959#endif 2275#endif
1960 /* adjust timers. this is easy, as the offset is the same for all of them */
1961 for (i = 0; i < timercnt; ++i)
1962 {
1963 ANHE *he = timers + i + HEAP0;
1964 ANHE_w (*he)->at += ev_rt_now - mn_now;
1965 ANHE_at_cache (*he);
1966 }
1967 } 2276 }
1968 2277
1969 mn_now = ev_rt_now; 2278 mn_now = ev_rt_now;
1970 } 2279 }
1971} 2280}
1972 2281
1973void 2282void
1974ev_ref (EV_P)
1975{
1976 ++activecnt;
1977}
1978
1979void
1980ev_unref (EV_P)
1981{
1982 --activecnt;
1983}
1984
1985void
1986ev_now_update (EV_P)
1987{
1988 time_update (EV_A_ 1e100);
1989}
1990
1991static int loop_done;
1992
1993void
1994ev_loop (EV_P_ int flags) 2283ev_run (EV_P_ int flags)
1995{ 2284{
2285#if EV_FEATURE_API
2286 ++loop_depth;
2287#endif
2288
2289 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2290
1996 loop_done = EVUNLOOP_CANCEL; 2291 loop_done = EVBREAK_CANCEL;
1997 2292
1998 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2293 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1999 2294
2000 do 2295 do
2001 { 2296 {
2002#if EV_VERIFY >= 2 2297#if EV_VERIFY >= 2
2003 ev_loop_verify (EV_A); 2298 ev_verify (EV_A);
2004#endif 2299#endif
2005 2300
2006#ifndef _WIN32 2301#ifndef _WIN32
2007 if (expect_false (curpid)) /* penalise the forking check even more */ 2302 if (expect_false (curpid)) /* penalise the forking check even more */
2008 if (expect_false (getpid () != curpid)) 2303 if (expect_false (getpid () != curpid))
… …
2016 /* we might have forked, so queue fork handlers */ 2311 /* we might have forked, so queue fork handlers */
2017 if (expect_false (postfork)) 2312 if (expect_false (postfork))
2018 if (forkcnt) 2313 if (forkcnt)
2019 { 2314 {
2020 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2315 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2021 call_pending (EV_A); 2316 EV_INVOKE_PENDING;
2022 } 2317 }
2023#endif 2318#endif
2024 2319
2320#if EV_PREPARE_ENABLE
2025 /* queue prepare watchers (and execute them) */ 2321 /* queue prepare watchers (and execute them) */
2026 if (expect_false (preparecnt)) 2322 if (expect_false (preparecnt))
2027 { 2323 {
2028 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2324 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2029 call_pending (EV_A); 2325 EV_INVOKE_PENDING;
2030 } 2326 }
2327#endif
2328
2329 if (expect_false (loop_done))
2330 break;
2031 2331
2032 /* we might have forked, so reify kernel state if necessary */ 2332 /* we might have forked, so reify kernel state if necessary */
2033 if (expect_false (postfork)) 2333 if (expect_false (postfork))
2034 loop_fork (EV_A); 2334 loop_fork (EV_A);
2035 2335
… …
2039 /* calculate blocking time */ 2339 /* calculate blocking time */
2040 { 2340 {
2041 ev_tstamp waittime = 0.; 2341 ev_tstamp waittime = 0.;
2042 ev_tstamp sleeptime = 0.; 2342 ev_tstamp sleeptime = 0.;
2043 2343
2344 /* remember old timestamp for io_blocktime calculation */
2345 ev_tstamp prev_mn_now = mn_now;
2346
2347 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100);
2349
2044 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2045 { 2351 {
2046 /* update time to cancel out callback processing overhead */ 2352 waittime = MAX_BLOCKTIME;
2047 time_update (EV_A_ 1e100);
2048 2353
2049 if (timercnt) 2354 if (timercnt)
2050 { 2355 {
2051 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2052 if (waittime > to) waittime = to; 2357 if (waittime > to) waittime = to;
… …
2058 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2059 if (waittime > to) waittime = to; 2364 if (waittime > to) waittime = to;
2060 } 2365 }
2061#endif 2366#endif
2062 2367
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */
2063 if (expect_false (waittime < timeout_blocktime)) 2369 if (expect_false (waittime < timeout_blocktime))
2064 waittime = timeout_blocktime; 2370 waittime = timeout_blocktime;
2065 2371
2066 sleeptime = waittime - backend_fudge; 2372 /* extra check because io_blocktime is commonly 0 */
2067
2068 if (expect_true (sleeptime > io_blocktime)) 2373 if (expect_false (io_blocktime))
2069 sleeptime = io_blocktime;
2070
2071 if (sleeptime)
2072 { 2374 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376
2377 if (sleeptime > waittime - backend_fudge)
2378 sleeptime = waittime - backend_fudge;
2379
2380 if (expect_true (sleeptime > 0.))
2381 {
2073 ev_sleep (sleeptime); 2382 ev_sleep (sleeptime);
2074 waittime -= sleeptime; 2383 waittime -= sleeptime;
2384 }
2075 } 2385 }
2076 } 2386 }
2077 2387
2388#if EV_FEATURE_API
2078 ++loop_count; 2389 ++loop_count;
2390#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2079 backend_poll (EV_A_ waittime); 2392 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2080 2394
2081 /* update ev_rt_now, do magic */ 2395 /* update ev_rt_now, do magic */
2082 time_update (EV_A_ waittime + sleeptime); 2396 time_update (EV_A_ waittime + sleeptime);
2083 } 2397 }
2084 2398
… …
2091#if EV_IDLE_ENABLE 2405#if EV_IDLE_ENABLE
2092 /* queue idle watchers unless other events are pending */ 2406 /* queue idle watchers unless other events are pending */
2093 idle_reify (EV_A); 2407 idle_reify (EV_A);
2094#endif 2408#endif
2095 2409
2410#if EV_CHECK_ENABLE
2096 /* queue check watchers, to be executed first */ 2411 /* queue check watchers, to be executed first */
2097 if (expect_false (checkcnt)) 2412 if (expect_false (checkcnt))
2098 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2413 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2414#endif
2099 2415
2100 call_pending (EV_A); 2416 EV_INVOKE_PENDING;
2101 } 2417 }
2102 while (expect_true ( 2418 while (expect_true (
2103 activecnt 2419 activecnt
2104 && !loop_done 2420 && !loop_done
2105 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2421 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2106 )); 2422 ));
2107 2423
2108 if (loop_done == EVUNLOOP_ONE) 2424 if (loop_done == EVBREAK_ONE)
2109 loop_done = EVUNLOOP_CANCEL; 2425 loop_done = EVBREAK_CANCEL;
2110}
2111 2426
2427#if EV_FEATURE_API
2428 --loop_depth;
2429#endif
2430}
2431
2112void 2432void
2113ev_unloop (EV_P_ int how) 2433ev_break (EV_P_ int how)
2114{ 2434{
2115 loop_done = how; 2435 loop_done = how;
2116} 2436}
2117 2437
2438void
2439ev_ref (EV_P)
2440{
2441 ++activecnt;
2442}
2443
2444void
2445ev_unref (EV_P)
2446{
2447 --activecnt;
2448}
2449
2450void
2451ev_now_update (EV_P)
2452{
2453 time_update (EV_A_ 1e100);
2454}
2455
2456void
2457ev_suspend (EV_P)
2458{
2459 ev_now_update (EV_A);
2460}
2461
2462void
2463ev_resume (EV_P)
2464{
2465 ev_tstamp mn_prev = mn_now;
2466
2467 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev);
2469#if EV_PERIODIC_ENABLE
2470 /* TODO: really do this? */
2471 periodics_reschedule (EV_A);
2472#endif
2473}
2474
2118/*****************************************************************************/ 2475/*****************************************************************************/
2476/* singly-linked list management, used when the expected list length is short */
2119 2477
2120inline_size void 2478inline_size void
2121wlist_add (WL *head, WL elem) 2479wlist_add (WL *head, WL elem)
2122{ 2480{
2123 elem->next = *head; 2481 elem->next = *head;
… …
2127inline_size void 2485inline_size void
2128wlist_del (WL *head, WL elem) 2486wlist_del (WL *head, WL elem)
2129{ 2487{
2130 while (*head) 2488 while (*head)
2131 { 2489 {
2132 if (*head == elem) 2490 if (expect_true (*head == elem))
2133 { 2491 {
2134 *head = elem->next; 2492 *head = elem->next;
2135 return; 2493 break;
2136 } 2494 }
2137 2495
2138 head = &(*head)->next; 2496 head = &(*head)->next;
2139 } 2497 }
2140} 2498}
2141 2499
2500/* internal, faster, version of ev_clear_pending */
2142inline_speed void 2501inline_speed void
2143clear_pending (EV_P_ W w) 2502clear_pending (EV_P_ W w)
2144{ 2503{
2145 if (w->pending) 2504 if (w->pending)
2146 { 2505 {
2147 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2506 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2148 w->pending = 0; 2507 w->pending = 0;
2149 } 2508 }
2150} 2509}
2151 2510
2152int 2511int
… …
2156 int pending = w_->pending; 2515 int pending = w_->pending;
2157 2516
2158 if (expect_true (pending)) 2517 if (expect_true (pending))
2159 { 2518 {
2160 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2519 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2520 p->w = (W)&pending_w;
2161 w_->pending = 0; 2521 w_->pending = 0;
2162 p->w = 0;
2163 return p->events; 2522 return p->events;
2164 } 2523 }
2165 else 2524 else
2166 return 0; 2525 return 0;
2167} 2526}
2168 2527
2169inline_size void 2528inline_size void
2170pri_adjust (EV_P_ W w) 2529pri_adjust (EV_P_ W w)
2171{ 2530{
2172 int pri = w->priority; 2531 int pri = ev_priority (w);
2173 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2532 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2174 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2533 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2175 w->priority = pri; 2534 ev_set_priority (w, pri);
2176} 2535}
2177 2536
2178inline_speed void 2537inline_speed void
2179ev_start (EV_P_ W w, int active) 2538ev_start (EV_P_ W w, int active)
2180{ 2539{
… …
2199 2558
2200 if (expect_false (ev_is_active (w))) 2559 if (expect_false (ev_is_active (w)))
2201 return; 2560 return;
2202 2561
2203 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2562 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2204 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2563 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2205 2564
2206 EV_FREQUENT_CHECK; 2565 EV_FREQUENT_CHECK;
2207 2566
2208 ev_start (EV_A_ (W)w, 1); 2567 ev_start (EV_A_ (W)w, 1);
2209 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2210 wlist_add (&anfds[fd].head, (WL)w); 2569 wlist_add (&anfds[fd].head, (WL)w);
2211 2570
2212 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2213 w->events &= ~EV__IOFDSET; 2572 w->events &= ~EV__IOFDSET;
2214 2573
2215 EV_FREQUENT_CHECK; 2574 EV_FREQUENT_CHECK;
2216} 2575}
2217 2576
… …
2227 EV_FREQUENT_CHECK; 2586 EV_FREQUENT_CHECK;
2228 2587
2229 wlist_del (&anfds[w->fd].head, (WL)w); 2588 wlist_del (&anfds[w->fd].head, (WL)w);
2230 ev_stop (EV_A_ (W)w); 2589 ev_stop (EV_A_ (W)w);
2231 2590
2232 fd_change (EV_A_ w->fd, 1); 2591 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2233 2592
2234 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2235} 2594}
2236 2595
2237void noinline 2596void noinline
… …
2279 timers [active] = timers [timercnt + HEAP0]; 2638 timers [active] = timers [timercnt + HEAP0];
2280 adjustheap (timers, timercnt, active); 2639 adjustheap (timers, timercnt, active);
2281 } 2640 }
2282 } 2641 }
2283 2642
2284 EV_FREQUENT_CHECK;
2285
2286 ev_at (w) -= mn_now; 2643 ev_at (w) -= mn_now;
2287 2644
2288 ev_stop (EV_A_ (W)w); 2645 ev_stop (EV_A_ (W)w);
2646
2647 EV_FREQUENT_CHECK;
2289} 2648}
2290 2649
2291void noinline 2650void noinline
2292ev_timer_again (EV_P_ ev_timer *w) 2651ev_timer_again (EV_P_ ev_timer *w)
2293{ 2652{
… …
2311 } 2670 }
2312 2671
2313 EV_FREQUENT_CHECK; 2672 EV_FREQUENT_CHECK;
2314} 2673}
2315 2674
2675ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w)
2677{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2679}
2680
2316#if EV_PERIODIC_ENABLE 2681#if EV_PERIODIC_ENABLE
2317void noinline 2682void noinline
2318ev_periodic_start (EV_P_ ev_periodic *w) 2683ev_periodic_start (EV_P_ ev_periodic *w)
2319{ 2684{
2320 if (expect_false (ev_is_active (w))) 2685 if (expect_false (ev_is_active (w)))
… …
2366 periodics [active] = periodics [periodiccnt + HEAP0]; 2731 periodics [active] = periodics [periodiccnt + HEAP0];
2367 adjustheap (periodics, periodiccnt, active); 2732 adjustheap (periodics, periodiccnt, active);
2368 } 2733 }
2369 } 2734 }
2370 2735
2371 EV_FREQUENT_CHECK;
2372
2373 ev_stop (EV_A_ (W)w); 2736 ev_stop (EV_A_ (W)w);
2737
2738 EV_FREQUENT_CHECK;
2374} 2739}
2375 2740
2376void noinline 2741void noinline
2377ev_periodic_again (EV_P_ ev_periodic *w) 2742ev_periodic_again (EV_P_ ev_periodic *w)
2378{ 2743{
… …
2384 2749
2385#ifndef SA_RESTART 2750#ifndef SA_RESTART
2386# define SA_RESTART 0 2751# define SA_RESTART 0
2387#endif 2752#endif
2388 2753
2754#if EV_SIGNAL_ENABLE
2755
2389void noinline 2756void noinline
2390ev_signal_start (EV_P_ ev_signal *w) 2757ev_signal_start (EV_P_ ev_signal *w)
2391{ 2758{
2392#if EV_MULTIPLICITY
2393 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2394#endif
2395 if (expect_false (ev_is_active (w))) 2759 if (expect_false (ev_is_active (w)))
2396 return; 2760 return;
2397 2761
2398 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2399 2763
2400 evpipe_init (EV_A); 2764#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2401 2767
2402 EV_FREQUENT_CHECK; 2768 signals [w->signum - 1].loop = EV_A;
2769#endif
2403 2770
2771 EV_FREQUENT_CHECK;
2772
2773#if EV_USE_SIGNALFD
2774 if (sigfd == -2)
2404 { 2775 {
2405#ifndef _WIN32 2776 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2406 sigset_t full, prev; 2777 if (sigfd < 0 && errno == EINVAL)
2407 sigfillset (&full); 2778 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2408 sigprocmask (SIG_SETMASK, &full, &prev);
2409#endif
2410 2779
2411 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2780 if (sigfd >= 0)
2781 {
2782 fd_intern (sigfd); /* doing it twice will not hurt */
2412 2783
2413#ifndef _WIN32 2784 sigemptyset (&sigfd_set);
2414 sigprocmask (SIG_SETMASK, &prev, 0); 2785
2415#endif 2786 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2787 ev_set_priority (&sigfd_w, EV_MAXPRI);
2788 ev_io_start (EV_A_ &sigfd_w);
2789 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2790 }
2416 } 2791 }
2792
2793 if (sigfd >= 0)
2794 {
2795 /* TODO: check .head */
2796 sigaddset (&sigfd_set, w->signum);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2798
2799 signalfd (sigfd, &sigfd_set, 0);
2800 }
2801#endif
2417 2802
2418 ev_start (EV_A_ (W)w, 1); 2803 ev_start (EV_A_ (W)w, 1);
2419 wlist_add (&signals [w->signum - 1].head, (WL)w); 2804 wlist_add (&signals [w->signum - 1].head, (WL)w);
2420 2805
2421 if (!((WL)w)->next) 2806 if (!((WL)w)->next)
2807# if EV_USE_SIGNALFD
2808 if (sigfd < 0) /*TODO*/
2809# endif
2422 { 2810 {
2423#if _WIN32 2811# ifdef _WIN32
2812 evpipe_init (EV_A);
2813
2424 signal (w->signum, ev_sighandler); 2814 signal (w->signum, ev_sighandler);
2425#else 2815# else
2426 struct sigaction sa; 2816 struct sigaction sa;
2817
2818 evpipe_init (EV_A);
2819
2427 sa.sa_handler = ev_sighandler; 2820 sa.sa_handler = ev_sighandler;
2428 sigfillset (&sa.sa_mask); 2821 sigfillset (&sa.sa_mask);
2429 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2430 sigaction (w->signum, &sa, 0); 2823 sigaction (w->signum, &sa, 0);
2824
2825 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2431#endif 2828#endif
2432 } 2829 }
2433 2830
2434 EV_FREQUENT_CHECK; 2831 EV_FREQUENT_CHECK;
2435} 2832}
2436 2833
2437void noinline 2834void noinline
… …
2445 2842
2446 wlist_del (&signals [w->signum - 1].head, (WL)w); 2843 wlist_del (&signals [w->signum - 1].head, (WL)w);
2447 ev_stop (EV_A_ (W)w); 2844 ev_stop (EV_A_ (W)w);
2448 2845
2449 if (!signals [w->signum - 1].head) 2846 if (!signals [w->signum - 1].head)
2847 {
2848#if EV_MULTIPLICITY
2849 signals [w->signum - 1].loop = 0; /* unattach from signal */
2850#endif
2851#if EV_USE_SIGNALFD
2852 if (sigfd >= 0)
2853 {
2854 sigset_t ss;
2855
2856 sigemptyset (&ss);
2857 sigaddset (&ss, w->signum);
2858 sigdelset (&sigfd_set, w->signum);
2859
2860 signalfd (sigfd, &sigfd_set, 0);
2861 sigprocmask (SIG_UNBLOCK, &ss, 0);
2862 }
2863 else
2864#endif
2450 signal (w->signum, SIG_DFL); 2865 signal (w->signum, SIG_DFL);
2866 }
2451 2867
2452 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2453} 2869}
2870
2871#endif
2872
2873#if EV_CHILD_ENABLE
2454 2874
2455void 2875void
2456ev_child_start (EV_P_ ev_child *w) 2876ev_child_start (EV_P_ ev_child *w)
2457{ 2877{
2458#if EV_MULTIPLICITY 2878#if EV_MULTIPLICITY
… …
2462 return; 2882 return;
2463 2883
2464 EV_FREQUENT_CHECK; 2884 EV_FREQUENT_CHECK;
2465 2885
2466 ev_start (EV_A_ (W)w, 1); 2886 ev_start (EV_A_ (W)w, 1);
2467 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2887 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2468 2888
2469 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2470} 2890}
2471 2891
2472void 2892void
… …
2476 if (expect_false (!ev_is_active (w))) 2896 if (expect_false (!ev_is_active (w)))
2477 return; 2897 return;
2478 2898
2479 EV_FREQUENT_CHECK; 2899 EV_FREQUENT_CHECK;
2480 2900
2481 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2482 ev_stop (EV_A_ (W)w); 2902 ev_stop (EV_A_ (W)w);
2483 2903
2484 EV_FREQUENT_CHECK; 2904 EV_FREQUENT_CHECK;
2485} 2905}
2906
2907#endif
2486 2908
2487#if EV_STAT_ENABLE 2909#if EV_STAT_ENABLE
2488 2910
2489# ifdef _WIN32 2911# ifdef _WIN32
2490# undef lstat 2912# undef lstat
… …
2496#define MIN_STAT_INTERVAL 0.1074891 2918#define MIN_STAT_INTERVAL 0.1074891
2497 2919
2498static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2499 2921
2500#if EV_USE_INOTIFY 2922#if EV_USE_INOTIFY
2501# define EV_INOTIFY_BUFSIZE 8192 2923
2924/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2502 2926
2503static void noinline 2927static void noinline
2504infy_add (EV_P_ ev_stat *w) 2928infy_add (EV_P_ ev_stat *w)
2505{ 2929{
2506 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); 2930 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);
2507 2931
2508 if (w->wd < 0) 2932 if (w->wd >= 0)
2933 {
2934 struct statfs sfs;
2935
2936 /* now local changes will be tracked by inotify, but remote changes won't */
2937 /* unless the filesystem is known to be local, we therefore still poll */
2938 /* also do poll on <2.6.25, but with normal frequency */
2939
2940 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */
2945 || sfs.f_type == 0x3153464a /* jfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */
2948 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2509 { 2952 }
2953 else
2954 {
2955 /* can't use inotify, continue to stat */
2510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2956 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2511 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2512 2957
2513 /* monitor some parent directory for speedup hints */ 2958 /* if path is not there, monitor some parent directory for speedup hints */
2514 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2959 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2515 /* but an efficiency issue only */ 2960 /* but an efficiency issue only */
2516 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2961 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2517 { 2962 {
2518 char path [4096]; 2963 char path [4096];
… …
2534 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2535 } 2980 }
2536 } 2981 }
2537 2982
2538 if (w->wd >= 0) 2983 if (w->wd >= 0)
2539 {
2540 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2984 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2541 2985
2542 /* now local changes will be tracked by inotify, but remote changes won't */ 2986 /* now re-arm timer, if required */
2543 /* unless the filesystem it known to be local, we therefore still poll */ 2987 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2544 /* also do poll on <2.6.25, but with normal frequency */
2545 struct statfs sfs;
2546
2547 if (fs_2625 && !statfs (w->path, &sfs))
2548 if (sfs.f_type == 0x1373 /* devfs */
2549 || sfs.f_type == 0xEF53 /* ext2/3 */
2550 || sfs.f_type == 0x3153464a /* jfs */
2551 || sfs.f_type == 0x52654973 /* reiser3 */
2552 || sfs.f_type == 0x01021994 /* tempfs */
2553 || sfs.f_type == 0x58465342 /* xfs */)
2554 return;
2555
2556 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2557 ev_timer_again (EV_A_ &w->timer); 2988 ev_timer_again (EV_A_ &w->timer);
2558 } 2989 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2559} 2990}
2560 2991
2561static void noinline 2992static void noinline
2562infy_del (EV_P_ ev_stat *w) 2993infy_del (EV_P_ ev_stat *w)
2563{ 2994{
… …
2566 2997
2567 if (wd < 0) 2998 if (wd < 0)
2568 return; 2999 return;
2569 3000
2570 w->wd = -2; 3001 w->wd = -2;
2571 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3002 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2572 wlist_del (&fs_hash [slot].head, (WL)w); 3003 wlist_del (&fs_hash [slot].head, (WL)w);
2573 3004
2574 /* remove this watcher, if others are watching it, they will rearm */ 3005 /* remove this watcher, if others are watching it, they will rearm */
2575 inotify_rm_watch (fs_fd, wd); 3006 inotify_rm_watch (fs_fd, wd);
2576} 3007}
… …
2578static void noinline 3009static void noinline
2579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3010infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2580{ 3011{
2581 if (slot < 0) 3012 if (slot < 0)
2582 /* overflow, need to check for all hash slots */ 3013 /* overflow, need to check for all hash slots */
2583 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3014 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2584 infy_wd (EV_A_ slot, wd, ev); 3015 infy_wd (EV_A_ slot, wd, ev);
2585 else 3016 else
2586 { 3017 {
2587 WL w_; 3018 WL w_;
2588 3019
2589 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3020 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2590 { 3021 {
2591 ev_stat *w = (ev_stat *)w_; 3022 ev_stat *w = (ev_stat *)w_;
2592 w_ = w_->next; /* lets us remove this watcher and all before it */ 3023 w_ = w_->next; /* lets us remove this watcher and all before it */
2593 3024
2594 if (w->wd == wd || wd == -1) 3025 if (w->wd == wd || wd == -1)
2595 { 3026 {
2596 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3027 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2597 { 3028 {
2598 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3029 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2599 w->wd = -1; 3030 w->wd = -1;
2600 infy_add (EV_A_ w); /* re-add, no matter what */ 3031 infy_add (EV_A_ w); /* re-add, no matter what */
2601 } 3032 }
2602 3033
2603 stat_timer_cb (EV_A_ &w->timer, 0); 3034 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2608 3039
2609static void 3040static void
2610infy_cb (EV_P_ ev_io *w, int revents) 3041infy_cb (EV_P_ ev_io *w, int revents)
2611{ 3042{
2612 char buf [EV_INOTIFY_BUFSIZE]; 3043 char buf [EV_INOTIFY_BUFSIZE];
2613 struct inotify_event *ev = (struct inotify_event *)buf;
2614 int ofs; 3044 int ofs;
2615 int len = read (fs_fd, buf, sizeof (buf)); 3045 int len = read (fs_fd, buf, sizeof (buf));
2616 3046
2617 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3047 for (ofs = 0; ofs < len; )
3048 {
3049 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2618 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3050 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len;
3052 }
3053}
3054
3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
2619} 3085}
2620 3086
2621inline_size void 3087inline_size void
2622check_2625 (EV_P) 3088ev_check_2625 (EV_P)
2623{ 3089{
2624 /* kernels < 2.6.25 are borked 3090 /* kernels < 2.6.25 are borked
2625 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2626 */ 3092 */
2627 struct utsname buf; 3093 if (ev_linux_version () < 0x020619)
2628 int major, minor, micro;
2629
2630 if (uname (&buf))
2631 return; 3094 return;
2632 3095
2633 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2634 return;
2635
2636 if (major < 2
2637 || (major == 2 && minor < 6)
2638 || (major == 2 && minor == 6 && micro < 25))
2639 return;
2640
2641 fs_2625 = 1; 3096 fs_2625 = 1;
3097}
3098
3099inline_size int
3100infy_newfd (void)
3101{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0)
3105 return fd;
3106#endif
3107 return inotify_init ();
2642} 3108}
2643 3109
2644inline_size void 3110inline_size void
2645infy_init (EV_P) 3111infy_init (EV_P)
2646{ 3112{
2647 if (fs_fd != -2) 3113 if (fs_fd != -2)
2648 return; 3114 return;
2649 3115
2650 fs_fd = -1; 3116 fs_fd = -1;
2651 3117
2652 check_2625 (EV_A); 3118 ev_check_2625 (EV_A);
2653 3119
2654 fs_fd = inotify_init (); 3120 fs_fd = infy_newfd ();
2655 3121
2656 if (fs_fd >= 0) 3122 if (fs_fd >= 0)
2657 { 3123 {
3124 fd_intern (fs_fd);
2658 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3125 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2659 ev_set_priority (&fs_w, EV_MAXPRI); 3126 ev_set_priority (&fs_w, EV_MAXPRI);
2660 ev_io_start (EV_A_ &fs_w); 3127 ev_io_start (EV_A_ &fs_w);
3128 ev_unref (EV_A);
2661 } 3129 }
2662} 3130}
2663 3131
2664inline_size void 3132inline_size void
2665infy_fork (EV_P) 3133infy_fork (EV_P)
… …
2667 int slot; 3135 int slot;
2668 3136
2669 if (fs_fd < 0) 3137 if (fs_fd < 0)
2670 return; 3138 return;
2671 3139
3140 ev_ref (EV_A);
3141 ev_io_stop (EV_A_ &fs_w);
2672 close (fs_fd); 3142 close (fs_fd);
2673 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2674 3144
3145 if (fs_fd >= 0)
3146 {
3147 fd_intern (fs_fd);
3148 ev_io_set (&fs_w, fs_fd, EV_READ);
3149 ev_io_start (EV_A_ &fs_w);
3150 ev_unref (EV_A);
3151 }
3152
2675 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3153 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2676 { 3154 {
2677 WL w_ = fs_hash [slot].head; 3155 WL w_ = fs_hash [slot].head;
2678 fs_hash [slot].head = 0; 3156 fs_hash [slot].head = 0;
2679 3157
2680 while (w_) 3158 while (w_)
… …
2685 w->wd = -1; 3163 w->wd = -1;
2686 3164
2687 if (fs_fd >= 0) 3165 if (fs_fd >= 0)
2688 infy_add (EV_A_ w); /* re-add, no matter what */ 3166 infy_add (EV_A_ w); /* re-add, no matter what */
2689 else 3167 else
3168 {
3169 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3170 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2690 ev_timer_again (EV_A_ &w->timer); 3171 ev_timer_again (EV_A_ &w->timer);
3172 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3173 }
2691 } 3174 }
2692 } 3175 }
2693} 3176}
2694 3177
2695#endif 3178#endif
… …
2712static void noinline 3195static void noinline
2713stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3196stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2714{ 3197{
2715 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2716 3199
2717 /* we copy this here each the time so that */ 3200 ev_statdata prev = w->attr;
2718 /* prev has the old value when the callback gets invoked */
2719 w->prev = w->attr;
2720 ev_stat_stat (EV_A_ w); 3201 ev_stat_stat (EV_A_ w);
2721 3202
2722 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3203 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2723 if ( 3204 if (
2724 w->prev.st_dev != w->attr.st_dev 3205 prev.st_dev != w->attr.st_dev
2725 || w->prev.st_ino != w->attr.st_ino 3206 || prev.st_ino != w->attr.st_ino
2726 || w->prev.st_mode != w->attr.st_mode 3207 || prev.st_mode != w->attr.st_mode
2727 || w->prev.st_nlink != w->attr.st_nlink 3208 || prev.st_nlink != w->attr.st_nlink
2728 || w->prev.st_uid != w->attr.st_uid 3209 || prev.st_uid != w->attr.st_uid
2729 || w->prev.st_gid != w->attr.st_gid 3210 || prev.st_gid != w->attr.st_gid
2730 || w->prev.st_rdev != w->attr.st_rdev 3211 || prev.st_rdev != w->attr.st_rdev
2731 || w->prev.st_size != w->attr.st_size 3212 || prev.st_size != w->attr.st_size
2732 || w->prev.st_atime != w->attr.st_atime 3213 || prev.st_atime != w->attr.st_atime
2733 || w->prev.st_mtime != w->attr.st_mtime 3214 || prev.st_mtime != w->attr.st_mtime
2734 || w->prev.st_ctime != w->attr.st_ctime 3215 || prev.st_ctime != w->attr.st_ctime
2735 ) { 3216 ) {
3217 /* we only update w->prev on actual differences */
3218 /* in case we test more often than invoke the callback, */
3219 /* to ensure that prev is always different to attr */
3220 w->prev = prev;
3221
2736 #if EV_USE_INOTIFY 3222 #if EV_USE_INOTIFY
2737 if (fs_fd >= 0) 3223 if (fs_fd >= 0)
2738 { 3224 {
2739 infy_del (EV_A_ w); 3225 infy_del (EV_A_ w);
2740 infy_add (EV_A_ w); 3226 infy_add (EV_A_ w);
… …
2765 3251
2766 if (fs_fd >= 0) 3252 if (fs_fd >= 0)
2767 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
2768 else 3254 else
2769#endif 3255#endif
3256 {
2770 ev_timer_again (EV_A_ &w->timer); 3257 ev_timer_again (EV_A_ &w->timer);
3258 ev_unref (EV_A);
3259 }
2771 3260
2772 ev_start (EV_A_ (W)w, 1); 3261 ev_start (EV_A_ (W)w, 1);
2773 3262
2774 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2775} 3264}
… …
2784 EV_FREQUENT_CHECK; 3273 EV_FREQUENT_CHECK;
2785 3274
2786#if EV_USE_INOTIFY 3275#if EV_USE_INOTIFY
2787 infy_del (EV_A_ w); 3276 infy_del (EV_A_ w);
2788#endif 3277#endif
3278
3279 if (ev_is_active (&w->timer))
3280 {
3281 ev_ref (EV_A);
2789 ev_timer_stop (EV_A_ &w->timer); 3282 ev_timer_stop (EV_A_ &w->timer);
3283 }
2790 3284
2791 ev_stop (EV_A_ (W)w); 3285 ev_stop (EV_A_ (W)w);
2792 3286
2793 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2794} 3288}
… …
2839 3333
2840 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2841} 3335}
2842#endif 3336#endif
2843 3337
3338#if EV_PREPARE_ENABLE
2844void 3339void
2845ev_prepare_start (EV_P_ ev_prepare *w) 3340ev_prepare_start (EV_P_ ev_prepare *w)
2846{ 3341{
2847 if (expect_false (ev_is_active (w))) 3342 if (expect_false (ev_is_active (w)))
2848 return; 3343 return;
… …
2874 3369
2875 ev_stop (EV_A_ (W)w); 3370 ev_stop (EV_A_ (W)w);
2876 3371
2877 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
2878} 3373}
3374#endif
2879 3375
3376#if EV_CHECK_ENABLE
2880void 3377void
2881ev_check_start (EV_P_ ev_check *w) 3378ev_check_start (EV_P_ ev_check *w)
2882{ 3379{
2883 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2884 return; 3381 return;
… …
2910 3407
2911 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
2912 3409
2913 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
2914} 3411}
3412#endif
2915 3413
2916#if EV_EMBED_ENABLE 3414#if EV_EMBED_ENABLE
2917void noinline 3415void noinline
2918ev_embed_sweep (EV_P_ ev_embed *w) 3416ev_embed_sweep (EV_P_ ev_embed *w)
2919{ 3417{
2920 ev_loop (w->other, EVLOOP_NONBLOCK); 3418 ev_run (w->other, EVRUN_NOWAIT);
2921} 3419}
2922 3420
2923static void 3421static void
2924embed_io_cb (EV_P_ ev_io *io, int revents) 3422embed_io_cb (EV_P_ ev_io *io, int revents)
2925{ 3423{
2926 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2927 3425
2928 if (ev_cb (w)) 3426 if (ev_cb (w))
2929 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2930 else 3428 else
2931 ev_loop (w->other, EVLOOP_NONBLOCK); 3429 ev_run (w->other, EVRUN_NOWAIT);
2932} 3430}
2933 3431
2934static void 3432static void
2935embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2936{ 3434{
2937 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3435 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2938 3436
2939 { 3437 {
2940 struct ev_loop *loop = w->other; 3438 EV_P = w->other;
2941 3439
2942 while (fdchangecnt) 3440 while (fdchangecnt)
2943 { 3441 {
2944 fd_reify (EV_A); 3442 fd_reify (EV_A);
2945 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3443 ev_run (EV_A_ EVRUN_NOWAIT);
2946 } 3444 }
2947 } 3445 }
2948} 3446}
2949 3447
2950static void 3448static void
… …
2953 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3451 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2954 3452
2955 ev_embed_stop (EV_A_ w); 3453 ev_embed_stop (EV_A_ w);
2956 3454
2957 { 3455 {
2958 struct ev_loop *loop = w->other; 3456 EV_P = w->other;
2959 3457
2960 ev_loop_fork (EV_A); 3458 ev_loop_fork (EV_A);
2961 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3459 ev_run (EV_A_ EVRUN_NOWAIT);
2962 } 3460 }
2963 3461
2964 ev_embed_start (EV_A_ w); 3462 ev_embed_start (EV_A_ w);
2965} 3463}
2966 3464
… …
2977{ 3475{
2978 if (expect_false (ev_is_active (w))) 3476 if (expect_false (ev_is_active (w)))
2979 return; 3477 return;
2980 3478
2981 { 3479 {
2982 struct ev_loop *loop = w->other; 3480 EV_P = w->other;
2983 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3481 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2984 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3482 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2985 } 3483 }
2986 3484
2987 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
… …
3014 3512
3015 ev_io_stop (EV_A_ &w->io); 3513 ev_io_stop (EV_A_ &w->io);
3016 ev_prepare_stop (EV_A_ &w->prepare); 3514 ev_prepare_stop (EV_A_ &w->prepare);
3017 ev_fork_stop (EV_A_ &w->fork); 3515 ev_fork_stop (EV_A_ &w->fork);
3018 3516
3517 ev_stop (EV_A_ (W)w);
3518
3019 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
3020} 3520}
3021#endif 3521#endif
3022 3522
3023#if EV_FORK_ENABLE 3523#if EV_FORK_ENABLE
… …
3063ev_async_start (EV_P_ ev_async *w) 3563ev_async_start (EV_P_ ev_async *w)
3064{ 3564{
3065 if (expect_false (ev_is_active (w))) 3565 if (expect_false (ev_is_active (w)))
3066 return; 3566 return;
3067 3567
3568 w->sent = 0;
3569
3068 evpipe_init (EV_A); 3570 evpipe_init (EV_A);
3069 3571
3070 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
3071 3573
3072 ev_start (EV_A_ (W)w, ++asynccnt); 3574 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3099 3601
3100void 3602void
3101ev_async_send (EV_P_ ev_async *w) 3603ev_async_send (EV_P_ ev_async *w)
3102{ 3604{
3103 w->sent = 1; 3605 w->sent = 1;
3104 evpipe_write (EV_A_ &gotasync); 3606 evpipe_write (EV_A_ &async_pending);
3105} 3607}
3106#endif 3608#endif
3107 3609
3108/*****************************************************************************/ 3610/*****************************************************************************/
3109 3611
… …
3149{ 3651{
3150 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3151 3653
3152 if (expect_false (!once)) 3654 if (expect_false (!once))
3153 { 3655 {
3154 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3656 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3155 return; 3657 return;
3156 } 3658 }
3157 3659
3158 once->cb = cb; 3660 once->cb = cb;
3159 once->arg = arg; 3661 once->arg = arg;
… …
3173 } 3675 }
3174} 3676}
3175 3677
3176/*****************************************************************************/ 3678/*****************************************************************************/
3177 3679
3178#if 0 3680#if EV_WALK_ENABLE
3179void 3681void
3180ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3181{ 3683{
3182 int i, j; 3684 int i, j;
3183 ev_watcher_list *wl, *wn; 3685 ev_watcher_list *wl, *wn;
… …
3199#if EV_USE_INOTIFY 3701#if EV_USE_INOTIFY
3200 if (ev_cb ((ev_io *)wl) == infy_cb) 3702 if (ev_cb ((ev_io *)wl) == infy_cb)
3201 ; 3703 ;
3202 else 3704 else
3203#endif 3705#endif
3204 if ((ev_io *)wl != &pipeev) 3706 if ((ev_io *)wl != &pipe_w)
3205 if (types & EV_IO) 3707 if (types & EV_IO)
3206 cb (EV_A_ EV_IO, wl); 3708 cb (EV_A_ EV_IO, wl);
3207 3709
3208 wl = wn; 3710 wl = wn;
3209 } 3711 }
… …
3246 if (types & EV_ASYNC) 3748 if (types & EV_ASYNC)
3247 for (i = asynccnt; i--; ) 3749 for (i = asynccnt; i--; )
3248 cb (EV_A_ EV_ASYNC, asyncs [i]); 3750 cb (EV_A_ EV_ASYNC, asyncs [i]);
3249#endif 3751#endif
3250 3752
3753#if EV_PREPARE_ENABLE
3251 if (types & EV_PREPARE) 3754 if (types & EV_PREPARE)
3252 for (i = preparecnt; i--; ) 3755 for (i = preparecnt; i--; )
3253#if EV_EMBED_ENABLE 3756# if EV_EMBED_ENABLE
3254 if (ev_cb (prepares [i]) != embed_prepare_cb) 3757 if (ev_cb (prepares [i]) != embed_prepare_cb)
3255#endif 3758# endif
3256 cb (EV_A_ EV_PREPARE, prepares [i]); 3759 cb (EV_A_ EV_PREPARE, prepares [i]);
3760#endif
3257 3761
3762#if EV_CHECK_ENABLE
3258 if (types & EV_CHECK) 3763 if (types & EV_CHECK)
3259 for (i = checkcnt; i--; ) 3764 for (i = checkcnt; i--; )
3260 cb (EV_A_ EV_CHECK, checks [i]); 3765 cb (EV_A_ EV_CHECK, checks [i]);
3766#endif
3261 3767
3768#if EV_SIGNAL_ENABLE
3262 if (types & EV_SIGNAL) 3769 if (types & EV_SIGNAL)
3263 for (i = 0; i < signalmax; ++i) 3770 for (i = 0; i < EV_NSIG - 1; ++i)
3264 for (wl = signals [i].head; wl; ) 3771 for (wl = signals [i].head; wl; )
3265 { 3772 {
3266 wn = wl->next; 3773 wn = wl->next;
3267 cb (EV_A_ EV_SIGNAL, wl); 3774 cb (EV_A_ EV_SIGNAL, wl);
3268 wl = wn; 3775 wl = wn;
3269 } 3776 }
3777#endif
3270 3778
3779#if EV_CHILD_ENABLE
3271 if (types & EV_CHILD) 3780 if (types & EV_CHILD)
3272 for (i = EV_PID_HASHSIZE; i--; ) 3781 for (i = (EV_PID_HASHSIZE); i--; )
3273 for (wl = childs [i]; wl; ) 3782 for (wl = childs [i]; wl; )
3274 { 3783 {
3275 wn = wl->next; 3784 wn = wl->next;
3276 cb (EV_A_ EV_CHILD, wl); 3785 cb (EV_A_ EV_CHILD, wl);
3277 wl = wn; 3786 wl = wn;
3278 } 3787 }
3788#endif
3279/* EV_STAT 0x00001000 /* stat data changed */ 3789/* EV_STAT 0x00001000 /* stat data changed */
3280/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3790/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3281} 3791}
3282#endif 3792#endif
3283 3793
3284#if EV_MULTIPLICITY 3794#if EV_MULTIPLICITY
3285 #include "ev_wrap.h" 3795 #include "ev_wrap.h"
3286#endif 3796#endif
3287 3797
3288#ifdef __cplusplus 3798EV_CPP(})
3289}
3290#endif
3291 3799

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