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Comparing libev/ev.c (file contents):
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC vs.
Revision 1.367 by root, Tue Jan 11 02:15:58 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
77# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
79# endif 75# endif
80# endif 76# endif
81 77
78# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
85# else 82# else
83# undef EV_USE_NANOSLEEP
86# 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
87# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
88# endif 94# endif
89 95
96# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 99# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 100# else
101# undef EV_USE_POLL
102# define EV_USE_POLL 0 102# define EV_USE_POLL 0
103# endif
104# endif 103# endif
105 104
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
109# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
112# endif 112# endif
113 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
120# endif 121# endif
121 122
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
125# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
128# endif 130# endif
129 131
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
136# endif 139# endif
137 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# 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
144# endif 157# endif
145 158
146#endif 159#endif
147 160
148#include <math.h> 161#include <math.h>
149#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
150#include <fcntl.h> 164#include <fcntl.h>
151#include <stddef.h> 165#include <stddef.h>
152 166
153#include <stdio.h> 167#include <stdio.h>
154 168
155#include <assert.h> 169#include <assert.h>
156#include <errno.h> 170#include <errno.h>
157#include <sys/types.h> 171#include <sys/types.h>
158#include <time.h> 172#include <time.h>
173#include <limits.h>
159 174
160#include <signal.h> 175#include <signal.h>
161 176
162#ifdef EV_H 177#ifdef EV_H
163# include EV_H 178# include EV_H
164#else 179#else
165# include "ev.h" 180# include "ev.h"
166#endif 181#endif
182
183EV_CPP(extern "C" {)
167 184
168#ifndef _WIN32 185#ifndef _WIN32
169# include <sys/time.h> 186# include <sys/time.h>
170# include <sys/wait.h> 187# include <sys/wait.h>
171# include <unistd.h> 188# include <unistd.h>
174# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 192# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
178# endif 195# endif
196# undef EV_AVOID_STDIO
179#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
180 206
181/* 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
182 236
183#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 240# else
187# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
188# endif 242# endif
189#endif 243#endif
190 244
191#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 248# else
195# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
196# endif 250# endif
197#endif 251#endif
198 252
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 255#endif
202 256
203#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 260# else
207# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
208# endif 262# endif
209#endif 263#endif
210 264
211#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 267#endif
214 268
215#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
216# ifdef _WIN32 270# ifdef _WIN32
217# define EV_USE_POLL 0 271# define EV_USE_POLL 0
218# else 272# else
219# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 274# endif
221#endif 275#endif
222 276
223#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 280# else
227# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
228# endif 282# endif
229#endif 283#endif
230 284
236# define EV_USE_PORT 0 290# define EV_USE_PORT 0
237#endif 291#endif
238 292
239#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 296# else
243# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
244# endif 298# endif
245#endif 299#endif
246 300
247#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 303#endif
254 304
255#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 307#endif
262 308
263#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 312# else
267# 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
268# endif 322# endif
269#endif 323#endif
270 324
271#if 0 /* debugging */ 325#if 0 /* debugging */
272# define EV_VERIFY 3 326# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
275#endif 329#endif
276 330
277#ifndef EV_VERIFY 331#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 333#endif
280 334
281#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 337#endif
284 338
285#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 341#endif
288 342
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 344/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 345#if EV_USE_CLOCK_SYSCALL
300# endif 354# endif
301#endif 355#endif
302 356
303/* 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 */
304 358
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
364
305#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
308#endif 368#endif
309 369
322# include <sys/select.h> 382# include <sys/select.h>
323# endif 383# endif
324#endif 384#endif
325 385
326#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 387# include <sys/statfs.h>
329# include <sys/inotify.h> 388# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
339#endif 398#endif
340 399
341#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 402# include <stdint.h>
344# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
345extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
346# endif 405# endif
347int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 407# ifdef O_CLOEXEC
349} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
350# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
351#endif 436#endif
352 437
353/**/ 438/**/
354 439
355#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 442#else
358# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
359#endif 444#endif
360 445
361/* 446/*
368 */ 453 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370 455
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
374 461
375#if __GNUC__ >= 4 462#if __GNUC__ >= 4
376# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
378#else 465#else
385 472
386#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline 475#define inline_size static inline
389 476
390#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
391# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
392#else 487#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
398 490
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
401 493
402typedef ev_watcher *W; 494typedef ev_watcher *W;
406#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
408 500
409#if EV_USE_REALTIME 501#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 503/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 505#endif
414 506
415#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 509#endif
418 510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
519#endif
520
419#ifdef _WIN32 521#ifdef _WIN32
420# include "ev_win32.c" 522# include "ev_win32.c"
421#endif 523#endif
422 524
423/*****************************************************************************/ 525/*****************************************************************************/
526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
424 576
425static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
426 578
427void 579void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
438 590
439 if (syserr_cb) 591 if (syserr_cb)
440 syserr_cb (msg); 592 syserr_cb (msg);
441 else 593 else
442 { 594 {
595#if EV_AVOID_STDIO
596 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
443 perror (msg); 601 perror (msg);
602#endif
444 abort (); 603 abort ();
445 } 604 }
446} 605}
447 606
448static void * 607static void *
449ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
450{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
451 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
454 */ 616 */
455 617
456 if (size) 618 if (size)
457 return realloc (ptr, size); 619 return realloc (ptr, size);
458 620
459 free (ptr); 621 free (ptr);
460 return 0; 622 return 0;
623#endif
461} 624}
462 625
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 627
465void 628void
473{ 636{
474 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
475 638
476 if (!ptr && size) 639 if (!ptr && size)
477 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
479 abort (); 646 abort ();
480 } 647 }
481 648
482 return ptr; 649 return ptr;
483} 650}
485#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
487 654
488/*****************************************************************************/ 655/*****************************************************************************/
489 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
490/* file descriptor info structure */ 660/* file descriptor info structure */
491typedef struct 661typedef struct
492{ 662{
493 WL head; 663 WL head;
494 unsigned char events; /* the events watched for */ 664 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 667 unsigned char unused;
498#if EV_USE_EPOLL 668#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 669 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 670#endif
501#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 672 SOCKET handle;
673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
503#endif 676#endif
504} ANFD; 677} ANFD;
505 678
506/* stores the pending event set for a given watcher */ 679/* stores the pending event set for a given watcher */
507typedef struct 680typedef struct
562 735
563 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
564 737
565#endif 738#endif
566 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
567/*****************************************************************************/ 752/*****************************************************************************/
568 753
569#ifndef EV_HAVE_EV_TIME 754#ifndef EV_HAVE_EV_TIME
570ev_tstamp 755ev_tstamp
571ev_time (void) 756ev_time (void)
614 if (delay > 0.) 799 if (delay > 0.)
615 { 800 {
616#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
617 struct timespec ts; 802 struct timespec ts;
618 803
619 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
623#elif defined(_WIN32) 806#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
625#else 808#else
626 struct timeval tv; 809 struct timeval tv;
627 810
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
635#endif 816#endif
636 } 817 }
637} 818}
638 819
639/*****************************************************************************/ 820/*****************************************************************************/
640 821
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 822#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 823
643/* find a suitable new size for the given array, */ 824/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 825/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 826inline_size int
646array_nextsize (int elem, int cur, int cnt) 827array_nextsize (int elem, int cur, int cnt)
647{ 828{
648 int ncur = cur + 1; 829 int ncur = cur + 1;
649 830
745} 926}
746 927
747/*****************************************************************************/ 928/*****************************************************************************/
748 929
749inline_speed void 930inline_speed void
750fd_event (EV_P_ int fd, int revents) 931fd_event_nocheck (EV_P_ int fd, int revents)
751{ 932{
752 ANFD *anfd = anfds + fd; 933 ANFD *anfd = anfds + fd;
753 ev_io *w; 934 ev_io *w;
754 935
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 936 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
759 if (ev) 940 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 941 ev_feed_event (EV_A_ (W)w, ev);
761 } 942 }
762} 943}
763 944
945/* do not submit kernel events for fds that have reify set */
946/* because that means they changed while we were polling for new events */
947inline_speed void
948fd_event (EV_P_ int fd, int revents)
949{
950 ANFD *anfd = anfds + fd;
951
952 if (expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents);
954}
955
764void 956void
765ev_feed_fd_event (EV_P_ int fd, int revents) 957ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 958{
767 if (fd >= 0 && fd < anfdmax) 959 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 960 fd_event_nocheck (EV_A_ fd, revents);
769} 961}
770 962
771/* make sure the external fd watch events are in-sync */ 963/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 964/* with the kernel/libev internal state */
773inline_size void 965inline_size void
779 { 971 {
780 int fd = fdchanges [i]; 972 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 973 ANFD *anfd = anfds + fd;
782 ev_io *w; 974 ev_io *w;
783 975
784 unsigned char events = 0; 976 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify;
785 978
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 979 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 980
789#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
790 if (events) 982 if (o_reify & EV__IOFDSET)
791 { 983 {
792 unsigned long arg; 984 unsigned long arg;
793 #ifdef EV_FD_TO_WIN32_HANDLE
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795 #else
796 anfd->handle = _get_osfhandle (fd);
797 #endif
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
799 } 988 }
800#endif 989#endif
801 990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
802 { 992 {
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events; 993 anfd->events = 0;
808 994
809 if (o_events != events || o_reify & EV__IOFDSET) 995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events;
997
998 if (o_events != anfd->events)
999 o_reify = EV__IOFDSET; /* actually |= */
1000 }
1001
1002 if (o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1003 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1004 }
813 1005
814 fdchangecnt = 0; 1006 fdchangecnt = 0;
815} 1007}
816 1008
840 ev_io_stop (EV_A_ w); 1032 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1034 }
843} 1035}
844 1036
845/* check whether the given fd is atcually valid, for error recovery */ 1037/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1038inline_size int
847fd_valid (int fd) 1039fd_valid (int fd)
848{ 1040{
849#ifdef _WIN32 1041#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1043#else
852 return fcntl (fd, F_GETFD) != -1; 1044 return fcntl (fd, F_GETFD) != -1;
853#endif 1045#endif
854} 1046}
855 1047
873 1065
874 for (fd = anfdmax; fd--; ) 1066 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1067 if (anfds [fd].events)
876 { 1068 {
877 fd_kill (EV_A_ fd); 1069 fd_kill (EV_A_ fd);
878 return; 1070 break;
879 } 1071 }
880} 1072}
881 1073
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1074/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1075static void noinline
888 for (fd = 0; fd < anfdmax; ++fd) 1080 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1081 if (anfds [fd].events)
890 { 1082 {
891 anfds [fd].events = 0; 1083 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1084 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1085 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1086 }
895} 1087}
896 1088
1089/* used to prepare libev internal fd's */
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102
897/*****************************************************************************/ 1103/*****************************************************************************/
898 1104
899/* 1105/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1106 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1107 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1108 * the branching factor of the d-tree.
903 */ 1109 */
904 1110
905/* 1111/*
973 1179
974 for (;;) 1180 for (;;)
975 { 1181 {
976 int c = k << 1; 1182 int c = k << 1;
977 1183
978 if (c > N + HEAP0 - 1) 1184 if (c >= N + HEAP0)
979 break; 1185 break;
980 1186
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1187 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1188 ? 1 : 0;
983 1189
1019 1225
1020/* move an element suitably so it is in a correct place */ 1226/* move an element suitably so it is in a correct place */
1021inline_size void 1227inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1228adjustheap (ANHE *heap, int N, int k)
1023{ 1229{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1230 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 1231 upheap (heap, k);
1026 else 1232 else
1027 downheap (heap, N, k); 1233 downheap (heap, N, k);
1028} 1234}
1029 1235
1042/*****************************************************************************/ 1248/*****************************************************************************/
1043 1249
1044/* associate signal watchers to a signal signal */ 1250/* associate signal watchers to a signal signal */
1045typedef struct 1251typedef struct
1046{ 1252{
1253 EV_ATOMIC_T pending;
1254#if EV_MULTIPLICITY
1255 EV_P;
1256#endif
1047 WL head; 1257 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1258} ANSIG;
1050 1259
1051static ANSIG *signals; 1260static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1261
1056/*****************************************************************************/ 1262/*****************************************************************************/
1057 1263
1058/* used to prepare libev internal fd's */ 1264#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1265
1072static void noinline 1266static void noinline
1073evpipe_init (EV_P) 1267evpipe_init (EV_P)
1074{ 1268{
1075 if (!ev_is_active (&pipe_w)) 1269 if (!ev_is_active (&pipe_w))
1076 { 1270 {
1077#if EV_USE_EVENTFD 1271# if EV_USE_EVENTFD
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1274 evfd = eventfd (0, 0);
1275
1276 if (evfd >= 0)
1079 { 1277 {
1080 evpipe [0] = -1; 1278 evpipe [0] = -1;
1081 fd_intern (evfd); 1279 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1280 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1281 }
1084 else 1282 else
1085#endif 1283# endif
1086 { 1284 {
1087 while (pipe (evpipe)) 1285 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1286 ev_syserr ("(libev) error creating signal/async pipe");
1089 1287
1090 fd_intern (evpipe [0]); 1288 fd_intern (evpipe [0]);
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1300{
1103 if (!*flag) 1301 if (!*flag)
1104 { 1302 {
1105 int old_errno = errno; /* save errno because write might clobber it */ 1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
1106 1305
1107 *flag = 1; 1306 *flag = 1;
1108 1307
1109#if EV_USE_EVENTFD 1308#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1309 if (evfd >= 0)
1112 uint64_t counter = 1; 1311 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1312 write (evfd, &counter, sizeof (uint64_t));
1114 } 1313 }
1115 else 1314 else
1116#endif 1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
1117 write (evpipe [1], &old_errno, 1); 1321 write (evpipe [1], &dummy, 1);
1118 1322
1119 errno = old_errno; 1323 errno = old_errno;
1120 } 1324 }
1121} 1325}
1122 1326
1123/* called whenever the libev signal pipe */ 1327/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1328/* got some events (signal, async) */
1125static void 1329static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1330pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1331{
1332 int i;
1333
1128#if EV_USE_EVENTFD 1334#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1335 if (evfd >= 0)
1130 { 1336 {
1131 uint64_t counter; 1337 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1338 read (evfd, &counter, sizeof (uint64_t));
1133 } 1339 }
1134 else 1340 else
1135#endif 1341#endif
1136 { 1342 {
1137 char dummy; 1343 char dummy;
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1138 read (evpipe [0], &dummy, 1); 1345 read (evpipe [0], &dummy, 1);
1139 } 1346 }
1140 1347
1141 if (gotsig && ev_is_default_loop (EV_A)) 1348 if (sig_pending)
1142 { 1349 {
1143 int signum; 1350 sig_pending = 0;
1144 gotsig = 0;
1145 1351
1146 for (signum = signalmax; signum--; ) 1352 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 1353 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 1354 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1355 }
1150 1356
1151#if EV_ASYNC_ENABLE 1357#if EV_ASYNC_ENABLE
1152 if (gotasync) 1358 if (async_pending)
1153 { 1359 {
1154 int i; 1360 async_pending = 0;
1155 gotasync = 0;
1156 1361
1157 for (i = asynccnt; i--; ) 1362 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1363 if (asyncs [i]->sent)
1159 { 1364 {
1160 asyncs [i]->sent = 0; 1365 asyncs [i]->sent = 0;
1164#endif 1369#endif
1165} 1370}
1166 1371
1167/*****************************************************************************/ 1372/*****************************************************************************/
1168 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
1169static void 1388static void
1170ev_sighandler (int signum) 1389ev_sighandler (int signum)
1171{ 1390{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32 1391#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
1178#endif 1393#endif
1179 1394
1180 signals [signum - 1].gotsig = 1; 1395 ev_feed_signal (signum);
1181 evpipe_write (EV_A_ &gotsig);
1182} 1396}
1183 1397
1184void noinline 1398void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
1186{ 1400{
1187 WL w; 1401 WL w;
1188 1402
1403 if (expect_false (signum <= 0 || signum > EV_NSIG))
1404 return;
1405
1406 --signum;
1407
1189#if EV_MULTIPLICITY 1408#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1409 /* it is permissible to try to feed a signal to the wrong loop */
1191#endif 1410 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1411
1193 --signum; 1412 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1413 return;
1414#endif
1197 1415
1198 signals [signum].gotsig = 0; 1416 signals [signum].pending = 0;
1199 1417
1200 for (w = signals [signum].head; w; w = w->next) 1418 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1419 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1420}
1203 1421
1422#if EV_USE_SIGNALFD
1423static void
1424sigfdcb (EV_P_ ev_io *iow, int revents)
1425{
1426 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1427
1428 for (;;)
1429 {
1430 ssize_t res = read (sigfd, si, sizeof (si));
1431
1432 /* not ISO-C, as res might be -1, but works with SuS */
1433 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1434 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1435
1436 if (res < (ssize_t)sizeof (si))
1437 break;
1438 }
1439}
1440#endif
1441
1442#endif
1443
1204/*****************************************************************************/ 1444/*****************************************************************************/
1205 1445
1446#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 1447static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 1448
1210static ev_signal childev; 1449static ev_signal childev;
1211 1450
1212#ifndef WIFCONTINUED 1451#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 1452# define WIFCONTINUED(status) 0
1218child_reap (EV_P_ int chain, int pid, int status) 1457child_reap (EV_P_ int chain, int pid, int status)
1219{ 1458{
1220 ev_child *w; 1459 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1460 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 1461
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1462 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 1463 {
1225 if ((w->pid == pid || !w->pid) 1464 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 1465 && (!traced || (w->flags & 1)))
1227 { 1466 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1467 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1253 /* make sure we are called again until all children have been reaped */ 1492 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 1493 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1494 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 1495
1257 child_reap (EV_A_ pid, pid, status); 1496 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 1497 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1498 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 1499}
1261 1500
1262#endif 1501#endif
1263 1502
1264/*****************************************************************************/ 1503/*****************************************************************************/
1265 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1266#if EV_USE_PORT 1508#if EV_USE_PORT
1267# include "ev_port.c" 1509# include "ev_port.c"
1268#endif 1510#endif
1269#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
1330#ifdef __APPLE__ 1572#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 1573 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1574 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1575 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 1576#endif
1577#ifdef __FreeBSD__
1578 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1579#endif
1335 1580
1336 return flags; 1581 return flags;
1337} 1582}
1338 1583
1339unsigned int 1584unsigned int
1340ev_embeddable_backends (void) 1585ev_embeddable_backends (void)
1341{ 1586{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 1588
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1589 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */ 1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 1591 flags &= ~EVBACKEND_EPOLL;
1347 1592
1348 return flags; 1593 return flags;
1349} 1594}
1350 1595
1351unsigned int 1596unsigned int
1352ev_backend (EV_P) 1597ev_backend (EV_P)
1353{ 1598{
1354 return backend; 1599 return backend;
1355} 1600}
1356 1601
1602#if EV_FEATURE_API
1357unsigned int 1603unsigned int
1358ev_loop_count (EV_P) 1604ev_iteration (EV_P)
1359{ 1605{
1360 return loop_count; 1606 return loop_count;
1361} 1607}
1362 1608
1363unsigned int 1609unsigned int
1364ev_loop_depth (EV_P) 1610ev_depth (EV_P)
1365{ 1611{
1366 return loop_depth; 1612 return loop_depth;
1367} 1613}
1368 1614
1369void 1615void
1375void 1621void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1622ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1377{ 1623{
1378 timeout_blocktime = interval; 1624 timeout_blocktime = interval;
1379} 1625}
1626
1627void
1628ev_set_userdata (EV_P_ void *data)
1629{
1630 userdata = data;
1631}
1632
1633void *
1634ev_userdata (EV_P)
1635{
1636 return userdata;
1637}
1638
1639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1640{
1641 invoke_cb = invoke_pending_cb;
1642}
1643
1644void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1645{
1646 release_cb = release;
1647 acquire_cb = acquire;
1648}
1649#endif
1380 1650
1381/* initialise a loop structure, must be zero-initialised */ 1651/* initialise a loop structure, must be zero-initialised */
1382static void noinline 1652static void noinline
1383loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1384{ 1654{
1385 if (!backend) 1655 if (!backend)
1386 { 1656 {
1657 origflags = flags;
1658
1387#if EV_USE_REALTIME 1659#if EV_USE_REALTIME
1388 if (!have_realtime) 1660 if (!have_realtime)
1389 { 1661 {
1390 struct timespec ts; 1662 struct timespec ts;
1391 1663
1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1674 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1403 have_monotonic = 1; 1675 have_monotonic = 1;
1404 } 1676 }
1405#endif 1677#endif
1406 1678
1679 /* pid check not overridable via env */
1680#ifndef _WIN32
1681 if (flags & EVFLAG_FORKCHECK)
1682 curpid = getpid ();
1683#endif
1684
1685 if (!(flags & EVFLAG_NOENV)
1686 && !enable_secure ()
1687 && getenv ("LIBEV_FLAGS"))
1688 flags = atoi (getenv ("LIBEV_FLAGS"));
1689
1407 ev_rt_now = ev_time (); 1690 ev_rt_now = ev_time ();
1408 mn_now = get_clock (); 1691 mn_now = get_clock ();
1409 now_floor = mn_now; 1692 now_floor = mn_now;
1410 rtmn_diff = ev_rt_now - mn_now; 1693 rtmn_diff = ev_rt_now - mn_now;
1694#if EV_FEATURE_API
1695 invoke_cb = ev_invoke_pending;
1696#endif
1411 1697
1412 io_blocktime = 0.; 1698 io_blocktime = 0.;
1413 timeout_blocktime = 0.; 1699 timeout_blocktime = 0.;
1414 backend = 0; 1700 backend = 0;
1415 backend_fd = -1; 1701 backend_fd = -1;
1416 gotasync = 0; 1702 sig_pending = 0;
1703#if EV_ASYNC_ENABLE
1704 async_pending = 0;
1705#endif
1417#if EV_USE_INOTIFY 1706#if EV_USE_INOTIFY
1418 fs_fd = -2; 1707 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1419#endif 1708#endif
1420 1709#if EV_USE_SIGNALFD
1421 /* pid check not overridable via env */ 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1422#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid ();
1425#endif 1711#endif
1426 1712
1427 if (!(flags & EVFLAG_NOENV) 1713 if (!(flags & EVBACKEND_MASK))
1428 && !enable_secure ()
1429 && getenv ("LIBEV_FLAGS"))
1430 flags = atoi (getenv ("LIBEV_FLAGS"));
1431
1432 if (!(flags & 0x0000ffffU))
1433 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1434 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1435#if EV_USE_PORT 1719#if EV_USE_PORT
1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1437#endif 1721#endif
1438#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1439 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1732 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1449#endif 1733#endif
1450 1734
1451 ev_prepare_init (&pending_w, pendingcb); 1735 ev_prepare_init (&pending_w, pendingcb);
1452 1736
1737#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1453 ev_init (&pipe_w, pipecb); 1738 ev_init (&pipe_w, pipecb);
1454 ev_set_priority (&pipe_w, EV_MAXPRI); 1739 ev_set_priority (&pipe_w, EV_MAXPRI);
1740#endif
1455 } 1741 }
1456} 1742}
1457 1743
1458/* free up a loop structure */ 1744/* free up a loop structure */
1459static void noinline 1745void
1460loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1461{ 1747{
1462 int i; 1748 int i;
1463 1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1772
1464 if (ev_is_active (&pipe_w)) 1773 if (ev_is_active (&pipe_w))
1465 { 1774 {
1466 ev_ref (EV_A); /* signal watcher */ 1775 /*ev_ref (EV_A);*/
1467 ev_io_stop (EV_A_ &pipe_w); 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
1468 1777
1469#if EV_USE_EVENTFD 1778#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1779 if (evfd >= 0)
1471 close (evfd); 1780 close (evfd);
1472#endif 1781#endif
1473 1782
1474 if (evpipe [0] >= 0) 1783 if (evpipe [0] >= 0)
1475 { 1784 {
1476 close (evpipe [0]); 1785 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 1786 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 1787 }
1479 } 1788 }
1789
1790#if EV_USE_SIGNALFD
1791 if (ev_is_active (&sigfd_w))
1792 close (sigfd);
1793#endif
1480 1794
1481#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1482 if (fs_fd >= 0) 1796 if (fs_fd >= 0)
1483 close (fs_fd); 1797 close (fs_fd);
1484#endif 1798#endif
1485 1799
1486 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1487 close (backend_fd); 1801 close (backend_fd);
1488 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1489#if EV_USE_PORT 1806#if EV_USE_PORT
1490 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1491#endif 1808#endif
1492#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1493 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1508#if EV_IDLE_ENABLE 1825#if EV_IDLE_ENABLE
1509 array_free (idle, [i]); 1826 array_free (idle, [i]);
1510#endif 1827#endif
1511 } 1828 }
1512 1829
1513 ev_free (anfds); anfdmax = 0; 1830 ev_free (anfds); anfds = 0; anfdmax = 0;
1514 1831
1515 /* have to use the microsoft-never-gets-it-right macro */ 1832 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY); 1833 array_free (rfeed, EMPTY);
1517 array_free (fdchange, EMPTY); 1834 array_free (fdchange, EMPTY);
1518 array_free (timer, EMPTY); 1835 array_free (timer, EMPTY);
1520 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1521#endif 1838#endif
1522#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1523 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1524#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1525 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1526 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1529#endif 1849#endif
1530 1850
1531 backend = 0; 1851 backend = 0;
1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1532} 1861}
1533 1862
1534#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1535inline_size void infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1536#endif 1865#endif
1553 1882
1554 if (ev_is_active (&pipe_w)) 1883 if (ev_is_active (&pipe_w))
1555 { 1884 {
1556 /* this "locks" the handlers against writing to the pipe */ 1885 /* this "locks" the handlers against writing to the pipe */
1557 /* while we modify the fd vars */ 1886 /* while we modify the fd vars */
1558 gotsig = 1; 1887 sig_pending = 1;
1559#if EV_ASYNC_ENABLE 1888#if EV_ASYNC_ENABLE
1560 gotasync = 1; 1889 async_pending = 1;
1561#endif 1890#endif
1562 1891
1563 ev_ref (EV_A); 1892 ev_ref (EV_A);
1564 ev_io_stop (EV_A_ &pipe_w); 1893 ev_io_stop (EV_A_ &pipe_w);
1565 1894
1568 close (evfd); 1897 close (evfd);
1569#endif 1898#endif
1570 1899
1571 if (evpipe [0] >= 0) 1900 if (evpipe [0] >= 0)
1572 { 1901 {
1573 close (evpipe [0]); 1902 EV_WIN32_CLOSE_FD (evpipe [0]);
1574 close (evpipe [1]); 1903 EV_WIN32_CLOSE_FD (evpipe [1]);
1575 } 1904 }
1576 1905
1906#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1577 evpipe_init (EV_A); 1907 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */ 1908 /* now iterate over everything, in case we missed something */
1579 pipecb (EV_A_ &pipe_w, EV_READ); 1909 pipecb (EV_A_ &pipe_w, EV_READ);
1910#endif
1580 } 1911 }
1581 1912
1582 postfork = 0; 1913 postfork = 0;
1583} 1914}
1584 1915
1585#if EV_MULTIPLICITY 1916#if EV_MULTIPLICITY
1586 1917
1587struct ev_loop * 1918struct ev_loop *
1588ev_loop_new (unsigned int flags) 1919ev_loop_new (unsigned int flags)
1589{ 1920{
1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1921 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1591 1922
1592 memset (loop, 0, sizeof (struct ev_loop)); 1923 memset (EV_A, 0, sizeof (struct ev_loop));
1593
1594 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1595 1925
1596 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1597 return loop; 1927 return EV_A;
1598 1928
1929 ev_free (EV_A);
1599 return 0; 1930 return 0;
1600} 1931}
1601 1932
1602void 1933#endif /* multiplicity */
1603ev_loop_destroy (EV_P)
1604{
1605 loop_destroy (EV_A);
1606 ev_free (loop);
1607}
1608
1609void
1610ev_loop_fork (EV_P)
1611{
1612 postfork = 1; /* must be in line with ev_default_fork */
1613}
1614 1934
1615#if EV_VERIFY 1935#if EV_VERIFY
1616static void noinline 1936static void noinline
1617verify_watcher (EV_P_ W w) 1937verify_watcher (EV_P_ W w)
1618{ 1938{
1646 verify_watcher (EV_A_ ws [cnt]); 1966 verify_watcher (EV_A_ ws [cnt]);
1647 } 1967 }
1648} 1968}
1649#endif 1969#endif
1650 1970
1971#if EV_FEATURE_API
1651void 1972void
1652ev_loop_verify (EV_P) 1973ev_verify (EV_P)
1653{ 1974{
1654#if EV_VERIFY 1975#if EV_VERIFY
1655 int i; 1976 int i;
1656 WL w; 1977 WL w;
1657 1978
1691#if EV_FORK_ENABLE 2012#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt); 2013 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt); 2014 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif 2015#endif
1695 2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
1696#if EV_ASYNC_ENABLE 2022#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt); 2023 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt); 2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif 2025#endif
1700 2026
2027#if EV_PREPARE_ENABLE
1701 assert (preparemax >= preparecnt); 2028 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt); 2029 array_verify (EV_A_ (W *)prepares, preparecnt);
2030#endif
1703 2031
2032#if EV_CHECK_ENABLE
1704 assert (checkmax >= checkcnt); 2033 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt); 2034 array_verify (EV_A_ (W *)checks, checkcnt);
2035#endif
1706 2036
1707# if 0 2037# if 0
2038#if EV_CHILD_ENABLE
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2039 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2040 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2041#endif
1710# endif 2042# endif
1711#endif 2043#endif
1712} 2044}
1713 2045#endif
1714#endif /* multiplicity */
1715 2046
1716#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1717struct ev_loop * 2048struct ev_loop *
1718ev_default_loop_init (unsigned int flags)
1719#else 2049#else
1720int 2050int
2051#endif
1721ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1722#endif
1723{ 2053{
1724 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
1725 { 2055 {
1726#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
1728#else 2058#else
1729 ev_default_loop_ptr = 1; 2059 ev_default_loop_ptr = 1;
1730#endif 2060#endif
1731 2061
1732 loop_init (EV_A_ flags); 2062 loop_init (EV_A_ flags);
1733 2063
1734 if (ev_backend (EV_A)) 2064 if (ev_backend (EV_A))
1735 { 2065 {
1736#ifndef _WIN32 2066#if EV_CHILD_ENABLE
1737 ev_signal_init (&childev, childcb, SIGCHLD); 2067 ev_signal_init (&childev, childcb, SIGCHLD);
1738 ev_set_priority (&childev, EV_MAXPRI); 2068 ev_set_priority (&childev, EV_MAXPRI);
1739 ev_signal_start (EV_A_ &childev); 2069 ev_signal_start (EV_A_ &childev);
1740 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2070 ev_unref (EV_A); /* child watcher should not keep loop alive */
1741#endif 2071#endif
1746 2076
1747 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
1748} 2078}
1749 2079
1750void 2080void
1751ev_default_destroy (void) 2081ev_loop_fork (EV_P)
1752{ 2082{
1753#if EV_MULTIPLICITY
1754 struct ev_loop *loop = ev_default_loop_ptr;
1755#endif
1756
1757 ev_default_loop_ptr = 0;
1758
1759#ifndef _WIN32
1760 ev_ref (EV_A); /* child watcher */
1761 ev_signal_stop (EV_A_ &childev);
1762#endif
1763
1764 loop_destroy (EV_A);
1765}
1766
1767void
1768ev_default_fork (void)
1769{
1770#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr;
1772#endif
1773
1774 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
1775} 2084}
1776 2085
1777/*****************************************************************************/ 2086/*****************************************************************************/
1778 2087
1779void 2088void
1780ev_invoke (EV_P_ void *w, int revents) 2089ev_invoke (EV_P_ void *w, int revents)
1781{ 2090{
1782 EV_CB_INVOKE ((W)w, revents); 2091 EV_CB_INVOKE ((W)w, revents);
1783} 2092}
1784 2093
1785inline_speed void 2094unsigned int
1786call_pending (EV_P) 2095ev_pending_count (EV_P)
2096{
2097 int pri;
2098 unsigned int count = 0;
2099
2100 for (pri = NUMPRI; pri--; )
2101 count += pendingcnt [pri];
2102
2103 return count;
2104}
2105
2106void noinline
2107ev_invoke_pending (EV_P)
1787{ 2108{
1788 int pri; 2109 int pri;
1789 2110
1790 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
1791 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
1792 { 2113 {
1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1794
1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1797 2115
1798 p->w->pending = 0; 2116 p->w->pending = 0;
1799 EV_CB_INVOKE (p->w, p->events); 2117 EV_CB_INVOKE (p->w, p->events);
1800 EV_FREQUENT_CHECK; 2118 EV_FREQUENT_CHECK;
1801 } 2119 }
1858 EV_FREQUENT_CHECK; 2176 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w); 2177 feed_reverse (EV_A_ (W)w);
1860 } 2178 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2179 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862 2180
1863 feed_reverse_done (EV_A_ EV_TIMEOUT); 2181 feed_reverse_done (EV_A_ EV_TIMER);
1864 } 2182 }
1865} 2183}
1866 2184
1867#if EV_PERIODIC_ENABLE 2185#if EV_PERIODIC_ENABLE
1868/* make periodics pending */ 2186/* make periodics pending */
1921 feed_reverse_done (EV_A_ EV_PERIODIC); 2239 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 } 2240 }
1923} 2241}
1924 2242
1925/* simply recalculate all periodics */ 2243/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2244/* TODO: maybe ensure that at least one event happens when jumping forward? */
1927static void noinline 2245static void noinline
1928periodics_reschedule (EV_P) 2246periodics_reschedule (EV_P)
1929{ 2247{
1930 int i; 2248 int i;
1931 2249
1959 ANHE_at_cache (*he); 2277 ANHE_at_cache (*he);
1960 } 2278 }
1961} 2279}
1962 2280
1963/* fetch new monotonic and realtime times from the kernel */ 2281/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */ 2282/* also detect if there was a timejump, and act accordingly */
1965inline_speed void 2283inline_speed void
1966time_update (EV_P_ ev_tstamp max_block) 2284time_update (EV_P_ ev_tstamp max_block)
1967{ 2285{
1968#if EV_USE_MONOTONIC 2286#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic)) 2287 if (expect_true (have_monotonic))
2027 mn_now = ev_rt_now; 2345 mn_now = ev_rt_now;
2028 } 2346 }
2029} 2347}
2030 2348
2031void 2349void
2032ev_loop (EV_P_ int flags) 2350ev_run (EV_P_ int flags)
2033{ 2351{
2352#if EV_FEATURE_API
2034 ++loop_depth; 2353 ++loop_depth;
2354#endif
2035 2355
2356 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2357
2036 loop_done = EVUNLOOP_CANCEL; 2358 loop_done = EVBREAK_CANCEL;
2037 2359
2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2360 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2039 2361
2040 do 2362 do
2041 { 2363 {
2042#if EV_VERIFY >= 2 2364#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A); 2365 ev_verify (EV_A);
2044#endif 2366#endif
2045 2367
2046#ifndef _WIN32 2368#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */ 2369 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid)) 2370 if (expect_false (getpid () != curpid))
2056 /* we might have forked, so queue fork handlers */ 2378 /* we might have forked, so queue fork handlers */
2057 if (expect_false (postfork)) 2379 if (expect_false (postfork))
2058 if (forkcnt) 2380 if (forkcnt)
2059 { 2381 {
2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2382 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2061 call_pending (EV_A); 2383 EV_INVOKE_PENDING;
2062 } 2384 }
2063#endif 2385#endif
2064 2386
2387#if EV_PREPARE_ENABLE
2065 /* queue prepare watchers (and execute them) */ 2388 /* queue prepare watchers (and execute them) */
2066 if (expect_false (preparecnt)) 2389 if (expect_false (preparecnt))
2067 { 2390 {
2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2391 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2069 call_pending (EV_A); 2392 EV_INVOKE_PENDING;
2070 } 2393 }
2394#endif
2395
2396 if (expect_false (loop_done))
2397 break;
2071 2398
2072 /* we might have forked, so reify kernel state if necessary */ 2399 /* we might have forked, so reify kernel state if necessary */
2073 if (expect_false (postfork)) 2400 if (expect_false (postfork))
2074 loop_fork (EV_A); 2401 loop_fork (EV_A);
2075 2402
2079 /* calculate blocking time */ 2406 /* calculate blocking time */
2080 { 2407 {
2081 ev_tstamp waittime = 0.; 2408 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.; 2409 ev_tstamp sleeptime = 0.;
2083 2410
2411 /* remember old timestamp for io_blocktime calculation */
2412 ev_tstamp prev_mn_now = mn_now;
2413
2414 /* update time to cancel out callback processing overhead */
2415 time_update (EV_A_ 1e100);
2416
2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2417 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2085 { 2418 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
2089 /* update time to cancel out callback processing overhead */
2090 time_update (EV_A_ 1e100);
2091
2092 waittime = MAX_BLOCKTIME; 2419 waittime = MAX_BLOCKTIME;
2093 2420
2094 if (timercnt) 2421 if (timercnt)
2095 { 2422 {
2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2423 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2123 waittime -= sleeptime; 2450 waittime -= sleeptime;
2124 } 2451 }
2125 } 2452 }
2126 } 2453 }
2127 2454
2455#if EV_FEATURE_API
2128 ++loop_count; 2456 ++loop_count;
2457#endif
2458 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2129 backend_poll (EV_A_ waittime); 2459 backend_poll (EV_A_ waittime);
2460 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2130 2461
2131 /* update ev_rt_now, do magic */ 2462 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime); 2463 time_update (EV_A_ waittime + sleeptime);
2133 } 2464 }
2134 2465
2141#if EV_IDLE_ENABLE 2472#if EV_IDLE_ENABLE
2142 /* queue idle watchers unless other events are pending */ 2473 /* queue idle watchers unless other events are pending */
2143 idle_reify (EV_A); 2474 idle_reify (EV_A);
2144#endif 2475#endif
2145 2476
2477#if EV_CHECK_ENABLE
2146 /* queue check watchers, to be executed first */ 2478 /* queue check watchers, to be executed first */
2147 if (expect_false (checkcnt)) 2479 if (expect_false (checkcnt))
2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2480 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2481#endif
2149 2482
2150 call_pending (EV_A); 2483 EV_INVOKE_PENDING;
2151 } 2484 }
2152 while (expect_true ( 2485 while (expect_true (
2153 activecnt 2486 activecnt
2154 && !loop_done 2487 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2488 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2156 )); 2489 ));
2157 2490
2158 if (loop_done == EVUNLOOP_ONE) 2491 if (loop_done == EVBREAK_ONE)
2159 loop_done = EVUNLOOP_CANCEL; 2492 loop_done = EVBREAK_CANCEL;
2160 2493
2494#if EV_FEATURE_API
2161 --loop_depth; 2495 --loop_depth;
2496#endif
2162} 2497}
2163 2498
2164void 2499void
2165ev_unloop (EV_P_ int how) 2500ev_break (EV_P_ int how)
2166{ 2501{
2167 loop_done = how; 2502 loop_done = how;
2168} 2503}
2169 2504
2170void 2505void
2217inline_size void 2552inline_size void
2218wlist_del (WL *head, WL elem) 2553wlist_del (WL *head, WL elem)
2219{ 2554{
2220 while (*head) 2555 while (*head)
2221 { 2556 {
2222 if (*head == elem) 2557 if (expect_true (*head == elem))
2223 { 2558 {
2224 *head = elem->next; 2559 *head = elem->next;
2225 return; 2560 break;
2226 } 2561 }
2227 2562
2228 head = &(*head)->next; 2563 head = &(*head)->next;
2229 } 2564 }
2230} 2565}
2258} 2593}
2259 2594
2260inline_size void 2595inline_size void
2261pri_adjust (EV_P_ W w) 2596pri_adjust (EV_P_ W w)
2262{ 2597{
2263 int pri = w->priority; 2598 int pri = ev_priority (w);
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2599 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2600 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri; 2601 ev_set_priority (w, pri);
2267} 2602}
2268 2603
2269inline_speed void 2604inline_speed void
2270ev_start (EV_P_ W w, int active) 2605ev_start (EV_P_ W w, int active)
2271{ 2606{
2290 2625
2291 if (expect_false (ev_is_active (w))) 2626 if (expect_false (ev_is_active (w)))
2292 return; 2627 return;
2293 2628
2294 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2629 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2630 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296 2631
2297 EV_FREQUENT_CHECK; 2632 EV_FREQUENT_CHECK;
2298 2633
2299 ev_start (EV_A_ (W)w, 1); 2634 ev_start (EV_A_ (W)w, 1);
2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2635 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2301 wlist_add (&anfds[fd].head, (WL)w); 2636 wlist_add (&anfds[fd].head, (WL)w);
2302 2637
2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2638 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2304 w->events &= ~EV__IOFDSET; 2639 w->events &= ~EV__IOFDSET;
2305 2640
2306 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2307} 2642}
2308 2643
2318 EV_FREQUENT_CHECK; 2653 EV_FREQUENT_CHECK;
2319 2654
2320 wlist_del (&anfds[w->fd].head, (WL)w); 2655 wlist_del (&anfds[w->fd].head, (WL)w);
2321 ev_stop (EV_A_ (W)w); 2656 ev_stop (EV_A_ (W)w);
2322 2657
2323 fd_change (EV_A_ w->fd, 1); 2658 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2324 2659
2325 EV_FREQUENT_CHECK; 2660 EV_FREQUENT_CHECK;
2326} 2661}
2327 2662
2328void noinline 2663void noinline
2370 timers [active] = timers [timercnt + HEAP0]; 2705 timers [active] = timers [timercnt + HEAP0];
2371 adjustheap (timers, timercnt, active); 2706 adjustheap (timers, timercnt, active);
2372 } 2707 }
2373 } 2708 }
2374 2709
2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now; 2710 ev_at (w) -= mn_now;
2378 2711
2379 ev_stop (EV_A_ (W)w); 2712 ev_stop (EV_A_ (W)w);
2713
2714 EV_FREQUENT_CHECK;
2380} 2715}
2381 2716
2382void noinline 2717void noinline
2383ev_timer_again (EV_P_ ev_timer *w) 2718ev_timer_again (EV_P_ ev_timer *w)
2384{ 2719{
2402 } 2737 }
2403 2738
2404 EV_FREQUENT_CHECK; 2739 EV_FREQUENT_CHECK;
2405} 2740}
2406 2741
2742ev_tstamp
2743ev_timer_remaining (EV_P_ ev_timer *w)
2744{
2745 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2746}
2747
2407#if EV_PERIODIC_ENABLE 2748#if EV_PERIODIC_ENABLE
2408void noinline 2749void noinline
2409ev_periodic_start (EV_P_ ev_periodic *w) 2750ev_periodic_start (EV_P_ ev_periodic *w)
2410{ 2751{
2411 if (expect_false (ev_is_active (w))) 2752 if (expect_false (ev_is_active (w)))
2457 periodics [active] = periodics [periodiccnt + HEAP0]; 2798 periodics [active] = periodics [periodiccnt + HEAP0];
2458 adjustheap (periodics, periodiccnt, active); 2799 adjustheap (periodics, periodiccnt, active);
2459 } 2800 }
2460 } 2801 }
2461 2802
2462 EV_FREQUENT_CHECK;
2463
2464 ev_stop (EV_A_ (W)w); 2803 ev_stop (EV_A_ (W)w);
2804
2805 EV_FREQUENT_CHECK;
2465} 2806}
2466 2807
2467void noinline 2808void noinline
2468ev_periodic_again (EV_P_ ev_periodic *w) 2809ev_periodic_again (EV_P_ ev_periodic *w)
2469{ 2810{
2475 2816
2476#ifndef SA_RESTART 2817#ifndef SA_RESTART
2477# define SA_RESTART 0 2818# define SA_RESTART 0
2478#endif 2819#endif
2479 2820
2821#if EV_SIGNAL_ENABLE
2822
2480void noinline 2823void noinline
2481ev_signal_start (EV_P_ ev_signal *w) 2824ev_signal_start (EV_P_ ev_signal *w)
2482{ 2825{
2483#if EV_MULTIPLICITY
2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif
2486 if (expect_false (ev_is_active (w))) 2826 if (expect_false (ev_is_active (w)))
2487 return; 2827 return;
2488 2828
2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2829 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2490 2830
2491 evpipe_init (EV_A); 2831#if EV_MULTIPLICITY
2832 assert (("libev: a signal must not be attached to two different loops",
2833 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2492 2834
2493 EV_FREQUENT_CHECK; 2835 signals [w->signum - 1].loop = EV_A;
2836#endif
2494 2837
2838 EV_FREQUENT_CHECK;
2839
2840#if EV_USE_SIGNALFD
2841 if (sigfd == -2)
2495 { 2842 {
2496#ifndef _WIN32 2843 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2497 sigset_t full, prev; 2844 if (sigfd < 0 && errno == EINVAL)
2498 sigfillset (&full); 2845 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501 2846
2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2847 if (sigfd >= 0)
2848 {
2849 fd_intern (sigfd); /* doing it twice will not hurt */
2503 2850
2504#ifndef _WIN32 2851 sigemptyset (&sigfd_set);
2505 sigprocmask (SIG_SETMASK, &prev, 0); 2852
2506#endif 2853 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2854 ev_set_priority (&sigfd_w, EV_MAXPRI);
2855 ev_io_start (EV_A_ &sigfd_w);
2856 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2857 }
2507 } 2858 }
2859
2860 if (sigfd >= 0)
2861 {
2862 /* TODO: check .head */
2863 sigaddset (&sigfd_set, w->signum);
2864 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2865
2866 signalfd (sigfd, &sigfd_set, 0);
2867 }
2868#endif
2508 2869
2509 ev_start (EV_A_ (W)w, 1); 2870 ev_start (EV_A_ (W)w, 1);
2510 wlist_add (&signals [w->signum - 1].head, (WL)w); 2871 wlist_add (&signals [w->signum - 1].head, (WL)w);
2511 2872
2512 if (!((WL)w)->next) 2873 if (!((WL)w)->next)
2874# if EV_USE_SIGNALFD
2875 if (sigfd < 0) /*TODO*/
2876# endif
2513 { 2877 {
2514#if _WIN32 2878# ifdef _WIN32
2879 evpipe_init (EV_A);
2880
2515 signal (w->signum, ev_sighandler); 2881 signal (w->signum, ev_sighandler);
2516#else 2882# else
2517 struct sigaction sa; 2883 struct sigaction sa;
2884
2885 evpipe_init (EV_A);
2886
2518 sa.sa_handler = ev_sighandler; 2887 sa.sa_handler = ev_sighandler;
2519 sigfillset (&sa.sa_mask); 2888 sigfillset (&sa.sa_mask);
2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2889 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2521 sigaction (w->signum, &sa, 0); 2890 sigaction (w->signum, &sa, 0);
2891
2892 if (origflags & EVFLAG_NOSIGMASK)
2893 {
2894 sigemptyset (&sa.sa_mask);
2895 sigaddset (&sa.sa_mask, w->signum);
2896 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2897 }
2522#endif 2898#endif
2523 } 2899 }
2524 2900
2525 EV_FREQUENT_CHECK; 2901 EV_FREQUENT_CHECK;
2526} 2902}
2527 2903
2528void noinline 2904void noinline
2536 2912
2537 wlist_del (&signals [w->signum - 1].head, (WL)w); 2913 wlist_del (&signals [w->signum - 1].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 2914 ev_stop (EV_A_ (W)w);
2539 2915
2540 if (!signals [w->signum - 1].head) 2916 if (!signals [w->signum - 1].head)
2917 {
2918#if EV_MULTIPLICITY
2919 signals [w->signum - 1].loop = 0; /* unattach from signal */
2920#endif
2921#if EV_USE_SIGNALFD
2922 if (sigfd >= 0)
2923 {
2924 sigset_t ss;
2925
2926 sigemptyset (&ss);
2927 sigaddset (&ss, w->signum);
2928 sigdelset (&sigfd_set, w->signum);
2929
2930 signalfd (sigfd, &sigfd_set, 0);
2931 sigprocmask (SIG_UNBLOCK, &ss, 0);
2932 }
2933 else
2934#endif
2541 signal (w->signum, SIG_DFL); 2935 signal (w->signum, SIG_DFL);
2936 }
2542 2937
2543 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
2544} 2939}
2940
2941#endif
2942
2943#if EV_CHILD_ENABLE
2545 2944
2546void 2945void
2547ev_child_start (EV_P_ ev_child *w) 2946ev_child_start (EV_P_ ev_child *w)
2548{ 2947{
2549#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
2553 return; 2952 return;
2554 2953
2555 EV_FREQUENT_CHECK; 2954 EV_FREQUENT_CHECK;
2556 2955
2557 ev_start (EV_A_ (W)w, 1); 2956 ev_start (EV_A_ (W)w, 1);
2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2957 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2559 2958
2560 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2561} 2960}
2562 2961
2563void 2962void
2567 if (expect_false (!ev_is_active (w))) 2966 if (expect_false (!ev_is_active (w)))
2568 return; 2967 return;
2569 2968
2570 EV_FREQUENT_CHECK; 2969 EV_FREQUENT_CHECK;
2571 2970
2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2971 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2573 ev_stop (EV_A_ (W)w); 2972 ev_stop (EV_A_ (W)w);
2574 2973
2575 EV_FREQUENT_CHECK; 2974 EV_FREQUENT_CHECK;
2576} 2975}
2976
2977#endif
2577 2978
2578#if EV_STAT_ENABLE 2979#if EV_STAT_ENABLE
2579 2980
2580# ifdef _WIN32 2981# ifdef _WIN32
2581# undef lstat 2982# undef lstat
2587#define MIN_STAT_INTERVAL 0.1074891 2988#define MIN_STAT_INTERVAL 0.1074891
2588 2989
2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2990static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2590 2991
2591#if EV_USE_INOTIFY 2992#if EV_USE_INOTIFY
2592# define EV_INOTIFY_BUFSIZE 8192 2993
2994/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2995# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2593 2996
2594static void noinline 2997static void noinline
2595infy_add (EV_P_ ev_stat *w) 2998infy_add (EV_P_ ev_stat *w)
2596{ 2999{
2597 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); 3000 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);
2598 3001
2599 if (w->wd < 0) 3002 if (w->wd >= 0)
3003 {
3004 struct statfs sfs;
3005
3006 /* now local changes will be tracked by inotify, but remote changes won't */
3007 /* unless the filesystem is known to be local, we therefore still poll */
3008 /* also do poll on <2.6.25, but with normal frequency */
3009
3010 if (!fs_2625)
3011 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3012 else if (!statfs (w->path, &sfs)
3013 && (sfs.f_type == 0x1373 /* devfs */
3014 || sfs.f_type == 0xEF53 /* ext2/3 */
3015 || sfs.f_type == 0x3153464a /* jfs */
3016 || sfs.f_type == 0x52654973 /* reiser3 */
3017 || sfs.f_type == 0x01021994 /* tempfs */
3018 || sfs.f_type == 0x58465342 /* xfs */))
3019 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3020 else
3021 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2600 { 3022 }
3023 else
3024 {
3025 /* can't use inotify, continue to stat */
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603 3027
2604 /* monitor some parent directory for speedup hints */ 3028 /* if path is not there, monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3029 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */ 3030 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3031 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 { 3032 {
2609 char path [4096]; 3033 char path [4096];
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3049 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 } 3050 }
2627 } 3051 }
2628 3052
2629 if (w->wd >= 0) 3053 if (w->wd >= 0)
2630 {
2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3054 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2632 3055
2633 /* now local changes will be tracked by inotify, but remote changes won't */ 3056 /* now re-arm timer, if required */
2634 /* unless the filesystem it known to be local, we therefore still poll */ 3057 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer); 3058 ev_timer_again (EV_A_ &w->timer);
2649 } 3059 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2650} 3060}
2651 3061
2652static void noinline 3062static void noinline
2653infy_del (EV_P_ ev_stat *w) 3063infy_del (EV_P_ ev_stat *w)
2654{ 3064{
2657 3067
2658 if (wd < 0) 3068 if (wd < 0)
2659 return; 3069 return;
2660 3070
2661 w->wd = -2; 3071 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3072 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w); 3073 wlist_del (&fs_hash [slot].head, (WL)w);
2664 3074
2665 /* remove this watcher, if others are watching it, they will rearm */ 3075 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd); 3076 inotify_rm_watch (fs_fd, wd);
2667} 3077}
2669static void noinline 3079static void noinline
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3080infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{ 3081{
2672 if (slot < 0) 3082 if (slot < 0)
2673 /* overflow, need to check for all hash slots */ 3083 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3084 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2675 infy_wd (EV_A_ slot, wd, ev); 3085 infy_wd (EV_A_ slot, wd, ev);
2676 else 3086 else
2677 { 3087 {
2678 WL w_; 3088 WL w_;
2679 3089
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3090 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2681 { 3091 {
2682 ev_stat *w = (ev_stat *)w_; 3092 ev_stat *w = (ev_stat *)w_;
2683 w_ = w_->next; /* lets us remove this watcher and all before it */ 3093 w_ = w_->next; /* lets us remove this watcher and all before it */
2684 3094
2685 if (w->wd == wd || wd == -1) 3095 if (w->wd == wd || wd == -1)
2686 { 3096 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3097 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 { 3098 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3099 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2690 w->wd = -1; 3100 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */ 3101 infy_add (EV_A_ w); /* re-add, no matter what */
2692 } 3102 }
2693 3103
2694 stat_timer_cb (EV_A_ &w->timer, 0); 3104 stat_timer_cb (EV_A_ &w->timer, 0);
2699 3109
2700static void 3110static void
2701infy_cb (EV_P_ ev_io *w, int revents) 3111infy_cb (EV_P_ ev_io *w, int revents)
2702{ 3112{
2703 char buf [EV_INOTIFY_BUFSIZE]; 3113 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs; 3114 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf)); 3115 int len = read (fs_fd, buf, sizeof (buf));
2707 3116
2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3117 for (ofs = 0; ofs < len; )
3118 {
3119 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2709 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3120 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3121 ofs += sizeof (struct inotify_event) + ev->len;
3122 }
2710} 3123}
2711 3124
2712inline_size void 3125inline_size void
2713check_2625 (EV_P) 3126ev_check_2625 (EV_P)
2714{ 3127{
2715 /* kernels < 2.6.25 are borked 3128 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3129 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */ 3130 */
2718 struct utsname buf; 3131 if (ev_linux_version () < 0x020619)
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return; 3132 return;
2723 3133
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1; 3134 fs_2625 = 1;
3135}
3136
3137inline_size int
3138infy_newfd (void)
3139{
3140#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3141 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3142 if (fd >= 0)
3143 return fd;
3144#endif
3145 return inotify_init ();
2733} 3146}
2734 3147
2735inline_size void 3148inline_size void
2736infy_init (EV_P) 3149infy_init (EV_P)
2737{ 3150{
2738 if (fs_fd != -2) 3151 if (fs_fd != -2)
2739 return; 3152 return;
2740 3153
2741 fs_fd = -1; 3154 fs_fd = -1;
2742 3155
2743 check_2625 (EV_A); 3156 ev_check_2625 (EV_A);
2744 3157
2745 fs_fd = inotify_init (); 3158 fs_fd = infy_newfd ();
2746 3159
2747 if (fs_fd >= 0) 3160 if (fs_fd >= 0)
2748 { 3161 {
3162 fd_intern (fs_fd);
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3163 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI); 3164 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w); 3165 ev_io_start (EV_A_ &fs_w);
3166 ev_unref (EV_A);
2752 } 3167 }
2753} 3168}
2754 3169
2755inline_size void 3170inline_size void
2756infy_fork (EV_P) 3171infy_fork (EV_P)
2758 int slot; 3173 int slot;
2759 3174
2760 if (fs_fd < 0) 3175 if (fs_fd < 0)
2761 return; 3176 return;
2762 3177
3178 ev_ref (EV_A);
3179 ev_io_stop (EV_A_ &fs_w);
2763 close (fs_fd); 3180 close (fs_fd);
2764 fs_fd = inotify_init (); 3181 fs_fd = infy_newfd ();
2765 3182
3183 if (fs_fd >= 0)
3184 {
3185 fd_intern (fs_fd);
3186 ev_io_set (&fs_w, fs_fd, EV_READ);
3187 ev_io_start (EV_A_ &fs_w);
3188 ev_unref (EV_A);
3189 }
3190
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3191 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2767 { 3192 {
2768 WL w_ = fs_hash [slot].head; 3193 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0; 3194 fs_hash [slot].head = 0;
2770 3195
2771 while (w_) 3196 while (w_)
2776 w->wd = -1; 3201 w->wd = -1;
2777 3202
2778 if (fs_fd >= 0) 3203 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */ 3204 infy_add (EV_A_ w); /* re-add, no matter what */
2780 else 3205 else
3206 {
3207 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3208 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2781 ev_timer_again (EV_A_ &w->timer); 3209 ev_timer_again (EV_A_ &w->timer);
3210 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3211 }
2782 } 3212 }
2783 } 3213 }
2784} 3214}
2785 3215
2786#endif 3216#endif
2803static void noinline 3233static void noinline
2804stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3234stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2805{ 3235{
2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3236 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2807 3237
2808 /* we copy this here each the time so that */ 3238 ev_statdata prev = w->attr;
2809 /* prev has the old value when the callback gets invoked */
2810 w->prev = w->attr;
2811 ev_stat_stat (EV_A_ w); 3239 ev_stat_stat (EV_A_ w);
2812 3240
2813 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3241 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2814 if ( 3242 if (
2815 w->prev.st_dev != w->attr.st_dev 3243 prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino 3244 || prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode 3245 || prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink 3246 || prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid 3247 || prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid 3248 || prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev 3249 || prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size 3250 || prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime 3251 || prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime 3252 || prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime 3253 || prev.st_ctime != w->attr.st_ctime
2826 ) { 3254 ) {
3255 /* we only update w->prev on actual differences */
3256 /* in case we test more often than invoke the callback, */
3257 /* to ensure that prev is always different to attr */
3258 w->prev = prev;
3259
2827 #if EV_USE_INOTIFY 3260 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0) 3261 if (fs_fd >= 0)
2829 { 3262 {
2830 infy_del (EV_A_ w); 3263 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w); 3264 infy_add (EV_A_ w);
2856 3289
2857 if (fs_fd >= 0) 3290 if (fs_fd >= 0)
2858 infy_add (EV_A_ w); 3291 infy_add (EV_A_ w);
2859 else 3292 else
2860#endif 3293#endif
3294 {
2861 ev_timer_again (EV_A_ &w->timer); 3295 ev_timer_again (EV_A_ &w->timer);
3296 ev_unref (EV_A);
3297 }
2862 3298
2863 ev_start (EV_A_ (W)w, 1); 3299 ev_start (EV_A_ (W)w, 1);
2864 3300
2865 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2866} 3302}
2875 EV_FREQUENT_CHECK; 3311 EV_FREQUENT_CHECK;
2876 3312
2877#if EV_USE_INOTIFY 3313#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w); 3314 infy_del (EV_A_ w);
2879#endif 3315#endif
3316
3317 if (ev_is_active (&w->timer))
3318 {
3319 ev_ref (EV_A);
2880 ev_timer_stop (EV_A_ &w->timer); 3320 ev_timer_stop (EV_A_ &w->timer);
3321 }
2881 3322
2882 ev_stop (EV_A_ (W)w); 3323 ev_stop (EV_A_ (W)w);
2883 3324
2884 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
2885} 3326}
2930 3371
2931 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
2932} 3373}
2933#endif 3374#endif
2934 3375
3376#if EV_PREPARE_ENABLE
2935void 3377void
2936ev_prepare_start (EV_P_ ev_prepare *w) 3378ev_prepare_start (EV_P_ ev_prepare *w)
2937{ 3379{
2938 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2939 return; 3381 return;
2965 3407
2966 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
2967 3409
2968 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
2969} 3411}
3412#endif
2970 3413
3414#if EV_CHECK_ENABLE
2971void 3415void
2972ev_check_start (EV_P_ ev_check *w) 3416ev_check_start (EV_P_ ev_check *w)
2973{ 3417{
2974 if (expect_false (ev_is_active (w))) 3418 if (expect_false (ev_is_active (w)))
2975 return; 3419 return;
3001 3445
3002 ev_stop (EV_A_ (W)w); 3446 ev_stop (EV_A_ (W)w);
3003 3447
3004 EV_FREQUENT_CHECK; 3448 EV_FREQUENT_CHECK;
3005} 3449}
3450#endif
3006 3451
3007#if EV_EMBED_ENABLE 3452#if EV_EMBED_ENABLE
3008void noinline 3453void noinline
3009ev_embed_sweep (EV_P_ ev_embed *w) 3454ev_embed_sweep (EV_P_ ev_embed *w)
3010{ 3455{
3011 ev_loop (w->other, EVLOOP_NONBLOCK); 3456 ev_run (w->other, EVRUN_NOWAIT);
3012} 3457}
3013 3458
3014static void 3459static void
3015embed_io_cb (EV_P_ ev_io *io, int revents) 3460embed_io_cb (EV_P_ ev_io *io, int revents)
3016{ 3461{
3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3462 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3018 3463
3019 if (ev_cb (w)) 3464 if (ev_cb (w))
3020 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3465 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3021 else 3466 else
3022 ev_loop (w->other, EVLOOP_NONBLOCK); 3467 ev_run (w->other, EVRUN_NOWAIT);
3023} 3468}
3024 3469
3025static void 3470static void
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3471embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{ 3472{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3473 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029 3474
3030 { 3475 {
3031 struct ev_loop *loop = w->other; 3476 EV_P = w->other;
3032 3477
3033 while (fdchangecnt) 3478 while (fdchangecnt)
3034 { 3479 {
3035 fd_reify (EV_A); 3480 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3481 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 3482 }
3038 } 3483 }
3039} 3484}
3040 3485
3041static void 3486static void
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3489 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045 3490
3046 ev_embed_stop (EV_A_ w); 3491 ev_embed_stop (EV_A_ w);
3047 3492
3048 { 3493 {
3049 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
3050 3495
3051 ev_loop_fork (EV_A); 3496 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3497 ev_run (EV_A_ EVRUN_NOWAIT);
3053 } 3498 }
3054 3499
3055 ev_embed_start (EV_A_ w); 3500 ev_embed_start (EV_A_ w);
3056} 3501}
3057 3502
3068{ 3513{
3069 if (expect_false (ev_is_active (w))) 3514 if (expect_false (ev_is_active (w)))
3070 return; 3515 return;
3071 3516
3072 { 3517 {
3073 struct ev_loop *loop = w->other; 3518 EV_P = w->other;
3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3519 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3520 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3076 } 3521 }
3077 3522
3078 EV_FREQUENT_CHECK; 3523 EV_FREQUENT_CHECK;
3105 3550
3106 ev_io_stop (EV_A_ &w->io); 3551 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare); 3552 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork); 3553 ev_fork_stop (EV_A_ &w->fork);
3109 3554
3555 ev_stop (EV_A_ (W)w);
3556
3110 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
3111} 3558}
3112#endif 3559#endif
3113 3560
3114#if EV_FORK_ENABLE 3561#if EV_FORK_ENABLE
3147 3594
3148 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
3149} 3596}
3150#endif 3597#endif
3151 3598
3152#if EV_ASYNC_ENABLE 3599#if EV_CLEANUP_ENABLE
3153void 3600void
3154ev_async_start (EV_P_ ev_async *w) 3601ev_cleanup_start (EV_P_ ev_cleanup *w)
3155{ 3602{
3156 if (expect_false (ev_is_active (w))) 3603 if (expect_false (ev_is_active (w)))
3157 return; 3604 return;
3605
3606 EV_FREQUENT_CHECK;
3607
3608 ev_start (EV_A_ (W)w, ++cleanupcnt);
3609 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3610 cleanups [cleanupcnt - 1] = w;
3611
3612 /* cleanup watchers should never keep a refcount on the loop */
3613 ev_unref (EV_A);
3614 EV_FREQUENT_CHECK;
3615}
3616
3617void
3618ev_cleanup_stop (EV_P_ ev_cleanup *w)
3619{
3620 clear_pending (EV_A_ (W)w);
3621 if (expect_false (!ev_is_active (w)))
3622 return;
3623
3624 EV_FREQUENT_CHECK;
3625 ev_ref (EV_A);
3626
3627 {
3628 int active = ev_active (w);
3629
3630 cleanups [active - 1] = cleanups [--cleanupcnt];
3631 ev_active (cleanups [active - 1]) = active;
3632 }
3633
3634 ev_stop (EV_A_ (W)w);
3635
3636 EV_FREQUENT_CHECK;
3637}
3638#endif
3639
3640#if EV_ASYNC_ENABLE
3641void
3642ev_async_start (EV_P_ ev_async *w)
3643{
3644 if (expect_false (ev_is_active (w)))
3645 return;
3646
3647 w->sent = 0;
3158 3648
3159 evpipe_init (EV_A); 3649 evpipe_init (EV_A);
3160 3650
3161 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
3162 3652
3190 3680
3191void 3681void
3192ev_async_send (EV_P_ ev_async *w) 3682ev_async_send (EV_P_ ev_async *w)
3193{ 3683{
3194 w->sent = 1; 3684 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync); 3685 evpipe_write (EV_A_ &async_pending);
3196} 3686}
3197#endif 3687#endif
3198 3688
3199/*****************************************************************************/ 3689/*****************************************************************************/
3200 3690
3240{ 3730{
3241 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3731 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3242 3732
3243 if (expect_false (!once)) 3733 if (expect_false (!once))
3244 { 3734 {
3245 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3735 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3246 return; 3736 return;
3247 } 3737 }
3248 3738
3249 once->cb = cb; 3739 once->cb = cb;
3250 once->arg = arg; 3740 once->arg = arg;
3337 if (types & EV_ASYNC) 3827 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; ) 3828 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]); 3829 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif 3830#endif
3341 3831
3832#if EV_PREPARE_ENABLE
3342 if (types & EV_PREPARE) 3833 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; ) 3834 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE 3835# if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb) 3836 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif 3837# endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]); 3838 cb (EV_A_ EV_PREPARE, prepares [i]);
3839#endif
3348 3840
3841#if EV_CHECK_ENABLE
3349 if (types & EV_CHECK) 3842 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; ) 3843 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]); 3844 cb (EV_A_ EV_CHECK, checks [i]);
3845#endif
3352 3846
3847#if EV_SIGNAL_ENABLE
3353 if (types & EV_SIGNAL) 3848 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i) 3849 for (i = 0; i < EV_NSIG - 1; ++i)
3355 for (wl = signals [i].head; wl; ) 3850 for (wl = signals [i].head; wl; )
3356 { 3851 {
3357 wn = wl->next; 3852 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl); 3853 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn; 3854 wl = wn;
3360 } 3855 }
3856#endif
3361 3857
3858#if EV_CHILD_ENABLE
3362 if (types & EV_CHILD) 3859 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; ) 3860 for (i = (EV_PID_HASHSIZE); i--; )
3364 for (wl = childs [i]; wl; ) 3861 for (wl = childs [i]; wl; )
3365 { 3862 {
3366 wn = wl->next; 3863 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl); 3864 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn; 3865 wl = wn;
3369 } 3866 }
3867#endif
3370/* EV_STAT 0x00001000 /* stat data changed */ 3868/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3869/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372} 3870}
3373#endif 3871#endif
3374 3872
3375#if EV_MULTIPLICITY 3873#if EV_MULTIPLICITY
3376 #include "ev_wrap.h" 3874 #include "ev_wrap.h"
3377#endif 3875#endif
3378 3876
3379#ifdef __cplusplus 3877EV_CPP(})
3380}
3381#endif
3382 3878

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