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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# 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
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
130# endif 148# endif
131 149
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
157# endif
158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
158#else 189#else
190# include <io.h>
159# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 192# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
163# endif 195# endif
196# undef EV_AVOID_STDIO
164#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
165 206
166/* 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 */
167 208
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
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
244
168#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
169# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
170#endif 251#endif
171 252
172#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 255#endif
175 256
176#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
177# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
178#endif 263#endif
179 264
180#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 267#endif
183 268
184#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
185# ifdef _WIN32 270# ifdef _WIN32
186# define EV_USE_POLL 0 271# define EV_USE_POLL 0
187# else 272# else
188# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 274# endif
190#endif 275#endif
191 276
192#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 280# else
196# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
197# endif 282# endif
198#endif 283#endif
199 284
… …
205# define EV_USE_PORT 0 290# define EV_USE_PORT 0
206#endif 291#endif
207 292
208#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 296# else
212# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
213# endif 298# endif
214#endif 299#endif
215 300
216#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 303#endif
223 304
224#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 307#endif
231 308
232#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 312# else
236# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
237# endif 314# endif
238#endif 315#endif
239 316
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
322# endif
323#endif
324
240#if 0 /* debugging */ 325#if 0 /* debugging */
241# define EV_VERIFY 1 326# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
244#endif 329#endif
245 330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
246#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
248#endif 337#endif
249 338
250#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
251# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
252#endif 355#endif
253 356
254/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
255 364
256#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
257# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
258# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
259#endif 368#endif
… …
273# include <sys/select.h> 382# include <sys/select.h>
274# endif 383# endif
275#endif 384#endif
276 385
277#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h>
278# include <sys/inotify.h> 389# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0
394# endif
279#endif 395#endif
280 396
281#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h> 398# include <winsock.h>
283#endif 399#endif
284 400
285#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
286/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
287# include <stdint.h> 403# include <stdint.h>
288# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
289extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
290# endif 406# endif
291int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
292# ifdef __cplusplus 408# ifdef O_CLOEXEC
293} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
294# endif 413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
295#endif 437#endif
296 438
297/**/ 439/**/
298 440
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1 441#if EV_VERIFY >= 3
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 442# define EV_FREQUENT_CHECK ev_verify (EV_A)
306#else 443#else
307# define EV_FREQUENT_CHECK do { } while (0) 444# define EV_FREQUENT_CHECK do { } while (0)
308#endif 445#endif
309 446
310/* 447/*
… …
317 */ 454 */
318#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
319 456
320#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
321#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
323 462
324#if __GNUC__ >= 4 463#if __GNUC__ >= 4
325# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
326# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
327#else 466#else
… …
334 473
335#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
336#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
337#define inline_size static inline 476#define inline_size static inline
338 477
339#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
340# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
341#else 488#else
342# define inline_speed static inline
343#endif
344
345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
347 491
348#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
350 494
351typedef ev_watcher *W; 495typedef ev_watcher *W;
… …
353typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
354 498
355#define ev_active(w) ((W)(w))->active 499#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at 500#define ev_at(w) ((WT)(w))->at
357 501
502#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif
507
358#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
359/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360/* giving it a reasonably high chance of working on typical architetcures */
361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
510#endif
511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
362#endif 520#endif
363 521
364#ifdef _WIN32 522#ifdef _WIN32
365# include "ev_win32.c" 523# include "ev_win32.c"
366#endif 524#endif
367 525
368/*****************************************************************************/ 526/*****************************************************************************/
369 527
528#if EV_AVOID_STDIO
529static void noinline
530ev_printerr (const char *msg)
531{
532 write (STDERR_FILENO, msg, strlen (msg));
533}
534#endif
535
370static void (*syserr_cb)(const char *msg); 536static void (*syserr_cb)(const char *msg);
371 537
372void 538void
373ev_set_syserr_cb (void (*cb)(const char *msg)) 539ev_set_syserr_cb (void (*cb)(const char *msg))
374{ 540{
375 syserr_cb = cb; 541 syserr_cb = cb;
376} 542}
377 543
378static void noinline 544static void noinline
379syserr (const char *msg) 545ev_syserr (const char *msg)
380{ 546{
381 if (!msg) 547 if (!msg)
382 msg = "(libev) system error"; 548 msg = "(libev) system error";
383 549
384 if (syserr_cb) 550 if (syserr_cb)
385 syserr_cb (msg); 551 syserr_cb (msg);
386 else 552 else
387 { 553 {
554#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg);
558 ev_printerr (": ");
559 ev_printerr (err);
560 ev_printerr ("\n");
561#else
388 perror (msg); 562 perror (msg);
563#endif
389 abort (); 564 abort ();
390 } 565 }
391} 566}
392 567
393static void * 568static void *
394ev_realloc_emul (void *ptr, long size) 569ev_realloc_emul (void *ptr, long size)
395{ 570{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
396 /* some systems, notably openbsd and darwin, fail to properly 574 /* some systems, notably openbsd and darwin, fail to properly
397 * implement realloc (x, 0) (as required by both ansi c-98 and 575 * implement realloc (x, 0) (as required by both ansi c-89 and
398 * the single unix specification, so work around them here. 576 * the single unix specification, so work around them here.
399 */ 577 */
400 578
401 if (size) 579 if (size)
402 return realloc (ptr, size); 580 return realloc (ptr, size);
403 581
404 free (ptr); 582 free (ptr);
405 return 0; 583 return 0;
584#endif
406} 585}
407 586
408static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
409 588
410void 589void
… …
418{ 597{
419 ptr = alloc (ptr, size); 598 ptr = alloc (ptr, size);
420 599
421 if (!ptr && size) 600 if (!ptr && size)
422 { 601 {
602#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n");
604#else
423 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
606#endif
424 abort (); 607 abort ();
425 } 608 }
426 609
427 return ptr; 610 return ptr;
428} 611}
… …
430#define ev_malloc(size) ev_realloc (0, (size)) 613#define ev_malloc(size) ev_realloc (0, (size))
431#define ev_free(ptr) ev_realloc ((ptr), 0) 614#define ev_free(ptr) ev_realloc ((ptr), 0)
432 615
433/*****************************************************************************/ 616/*****************************************************************************/
434 617
618/* set in reify when reification needed */
619#define EV_ANFD_REIFY 1
620
621/* file descriptor info structure */
435typedef struct 622typedef struct
436{ 623{
437 WL head; 624 WL head;
438 unsigned char events; 625 unsigned char events; /* the events watched for */
626 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439 unsigned char reify; 628 unsigned char unused;
629#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif
440#if EV_SELECT_IS_WINSOCKET 632#if EV_SELECT_IS_WINSOCKET
441 SOCKET handle; 633 SOCKET handle;
442#endif 634#endif
443} ANFD; 635} ANFD;
444 636
637/* stores the pending event set for a given watcher */
445typedef struct 638typedef struct
446{ 639{
447 W w; 640 W w;
448 int events; 641 int events; /* the pending event set for the given watcher */
449} ANPENDING; 642} ANPENDING;
450 643
451#if EV_USE_INOTIFY 644#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */ 645/* hash table entry per inotify-id */
453typedef struct 646typedef struct
… …
456} ANFS; 649} ANFS;
457#endif 650#endif
458 651
459/* Heap Entry */ 652/* Heap Entry */
460#if EV_HEAP_CACHE_AT 653#if EV_HEAP_CACHE_AT
654 /* a heap element */
461 typedef struct { 655 typedef struct {
462 ev_tstamp at; 656 ev_tstamp at;
463 WT w; 657 WT w;
464 } ANHE; 658 } ANHE;
465 659
466 #define ANHE_w(he) (he).w /* access watcher, read-write */ 660 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */ 661 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 662 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else 663#else
664 /* a heap element */
470 typedef WT ANHE; 665 typedef WT ANHE;
471 666
472 #define ANHE_w(he) (he) 667 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at 668 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he) 669 #define ANHE_at_cache(he)
… …
498 693
499 static int ev_default_loop_ptr; 694 static int ev_default_loop_ptr;
500 695
501#endif 696#endif
502 697
698#if EV_FEATURE_API
699# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
700# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
701# define EV_INVOKE_PENDING invoke_cb (EV_A)
702#else
703# define EV_RELEASE_CB (void)0
704# define EV_ACQUIRE_CB (void)0
705# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
706#endif
707
708#define EVBREAK_RECURSE 0x80
709
503/*****************************************************************************/ 710/*****************************************************************************/
504 711
712#ifndef EV_HAVE_EV_TIME
505ev_tstamp 713ev_tstamp
506ev_time (void) 714ev_time (void)
507{ 715{
508#if EV_USE_REALTIME 716#if EV_USE_REALTIME
717 if (expect_true (have_realtime))
718 {
509 struct timespec ts; 719 struct timespec ts;
510 clock_gettime (CLOCK_REALTIME, &ts); 720 clock_gettime (CLOCK_REALTIME, &ts);
511 return ts.tv_sec + ts.tv_nsec * 1e-9; 721 return ts.tv_sec + ts.tv_nsec * 1e-9;
512#else 722 }
723#endif
724
513 struct timeval tv; 725 struct timeval tv;
514 gettimeofday (&tv, 0); 726 gettimeofday (&tv, 0);
515 return tv.tv_sec + tv.tv_usec * 1e-6; 727 return tv.tv_sec + tv.tv_usec * 1e-6;
516#endif
517} 728}
729#endif
518 730
519ev_tstamp inline_size 731inline_size ev_tstamp
520get_clock (void) 732get_clock (void)
521{ 733{
522#if EV_USE_MONOTONIC 734#if EV_USE_MONOTONIC
523 if (expect_true (have_monotonic)) 735 if (expect_true (have_monotonic))
524 { 736 {
… …
545 if (delay > 0.) 757 if (delay > 0.)
546 { 758 {
547#if EV_USE_NANOSLEEP 759#if EV_USE_NANOSLEEP
548 struct timespec ts; 760 struct timespec ts;
549 761
550 ts.tv_sec = (time_t)delay; 762 EV_TS_SET (ts, delay);
551 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
552
553 nanosleep (&ts, 0); 763 nanosleep (&ts, 0);
554#elif defined(_WIN32) 764#elif defined(_WIN32)
555 Sleep ((unsigned long)(delay * 1e3)); 765 Sleep ((unsigned long)(delay * 1e3));
556#else 766#else
557 struct timeval tv; 767 struct timeval tv;
558 768
559 tv.tv_sec = (time_t)delay; 769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 770 /* something not guaranteed by newer posix versions, but guaranteed */
561 771 /* by older ones */
772 EV_TV_SET (tv, delay);
562 select (0, 0, 0, 0, &tv); 773 select (0, 0, 0, 0, &tv);
563#endif 774#endif
564 } 775 }
565} 776}
566 777
567/*****************************************************************************/ 778/*****************************************************************************/
568 779
569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 780#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570 781
571int inline_size 782/* find a suitable new size for the given array, */
783/* hopefully by rounding to a nice-to-malloc size */
784inline_size int
572array_nextsize (int elem, int cur, int cnt) 785array_nextsize (int elem, int cur, int cnt)
573{ 786{
574 int ncur = cur + 1; 787 int ncur = cur + 1;
575 788
576 do 789 do
… …
593array_realloc (int elem, void *base, int *cur, int cnt) 806array_realloc (int elem, void *base, int *cur, int cnt)
594{ 807{
595 *cur = array_nextsize (elem, *cur, cnt); 808 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur); 809 return ev_realloc (base, elem * *cur);
597} 810}
811
812#define array_init_zero(base,count) \
813 memset ((void *)(base), 0, sizeof (*(base)) * (count))
598 814
599#define array_needsize(type,base,cur,cnt,init) \ 815#define array_needsize(type,base,cur,cnt,init) \
600 if (expect_false ((cnt) > (cur))) \ 816 if (expect_false ((cnt) > (cur))) \
601 { \ 817 { \
602 int ocur_ = (cur); \ 818 int ocur_ = (cur); \
… …
614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 830 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615 } 831 }
616#endif 832#endif
617 833
618#define array_free(stem, idx) \ 834#define array_free(stem, idx) \
619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 835 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620 836
621/*****************************************************************************/ 837/*****************************************************************************/
838
839/* dummy callback for pending events */
840static void noinline
841pendingcb (EV_P_ ev_prepare *w, int revents)
842{
843}
622 844
623void noinline 845void noinline
624ev_feed_event (EV_P_ void *w, int revents) 846ev_feed_event (EV_P_ void *w, int revents)
625{ 847{
626 W w_ = (W)w; 848 W w_ = (W)w;
… …
635 pendings [pri][w_->pending - 1].w = w_; 857 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents; 858 pendings [pri][w_->pending - 1].events = revents;
637 } 859 }
638} 860}
639 861
640void inline_speed 862inline_speed void
863feed_reverse (EV_P_ W w)
864{
865 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
866 rfeeds [rfeedcnt++] = w;
867}
868
869inline_size void
870feed_reverse_done (EV_P_ int revents)
871{
872 do
873 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
874 while (rfeedcnt);
875}
876
877inline_speed void
641queue_events (EV_P_ W *events, int eventcnt, int type) 878queue_events (EV_P_ W *events, int eventcnt, int type)
642{ 879{
643 int i; 880 int i;
644 881
645 for (i = 0; i < eventcnt; ++i) 882 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type); 883 ev_feed_event (EV_A_ events [i], type);
647} 884}
648 885
649/*****************************************************************************/ 886/*****************************************************************************/
650 887
651void inline_size 888inline_speed void
652anfds_init (ANFD *base, int count)
653{
654 while (count--)
655 {
656 base->head = 0;
657 base->events = EV_NONE;
658 base->reify = 0;
659
660 ++base;
661 }
662}
663
664void inline_speed
665fd_event (EV_P_ int fd, int revents) 889fd_event_nocheck (EV_P_ int fd, int revents)
666{ 890{
667 ANFD *anfd = anfds + fd; 891 ANFD *anfd = anfds + fd;
668 ev_io *w; 892 ev_io *w;
669 893
670 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 894 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
674 if (ev) 898 if (ev)
675 ev_feed_event (EV_A_ (W)w, ev); 899 ev_feed_event (EV_A_ (W)w, ev);
676 } 900 }
677} 901}
678 902
903/* do not submit kernel events for fds that have reify set */
904/* because that means they changed while we were polling for new events */
905inline_speed void
906fd_event (EV_P_ int fd, int revents)
907{
908 ANFD *anfd = anfds + fd;
909
910 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents);
912}
913
679void 914void
680ev_feed_fd_event (EV_P_ int fd, int revents) 915ev_feed_fd_event (EV_P_ int fd, int revents)
681{ 916{
682 if (fd >= 0 && fd < anfdmax) 917 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents); 918 fd_event_nocheck (EV_A_ fd, revents);
684} 919}
685 920
686void inline_size 921/* make sure the external fd watch events are in-sync */
922/* with the kernel/libev internal state */
923inline_size void
687fd_reify (EV_P) 924fd_reify (EV_P)
688{ 925{
689 int i; 926 int i;
690 927
691 for (i = 0; i < fdchangecnt; ++i) 928 for (i = 0; i < fdchangecnt; ++i)
692 { 929 {
693 int fd = fdchanges [i]; 930 int fd = fdchanges [i];
694 ANFD *anfd = anfds + fd; 931 ANFD *anfd = anfds + fd;
695 ev_io *w; 932 ev_io *w;
696 933
697 unsigned char events = 0; 934 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify;
698 936
699 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 937 anfd->reify = 0;
700 events |= (unsigned char)w->events;
701 938
702#if EV_SELECT_IS_WINSOCKET 939#if EV_SELECT_IS_WINSOCKET
703 if (events) 940 if (o_reify & EV__IOFDSET)
704 { 941 {
705 unsigned long argp; 942 unsigned long arg;
706 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else
709 anfd->handle = _get_osfhandle (fd);
710 #endif
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712 } 945 }
713#endif 946#endif
714 947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
715 { 949 {
716 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify;
718
719 anfd->reify = 0;
720 anfd->events = events; 950 anfd->events = 0;
721 951
722 if (o_events != events || o_reify & EV_IOFDSET) 952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
953 anfd->events |= (unsigned char)w->events;
954
955 if (o_events != anfd->events)
956 o_reify = EV__IOFDSET; /* actually |= */
957 }
958
959 if (o_reify & EV__IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events); 960 backend_modify (EV_A_ fd, o_events, anfd->events);
724 }
725 } 961 }
726 962
727 fdchangecnt = 0; 963 fdchangecnt = 0;
728} 964}
729 965
730void inline_size 966/* something about the given fd changed */
967inline_size void
731fd_change (EV_P_ int fd, int flags) 968fd_change (EV_P_ int fd, int flags)
732{ 969{
733 unsigned char reify = anfds [fd].reify; 970 unsigned char reify = anfds [fd].reify;
734 anfds [fd].reify |= flags; 971 anfds [fd].reify |= flags;
735 972
… …
739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 976 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740 fdchanges [fdchangecnt - 1] = fd; 977 fdchanges [fdchangecnt - 1] = fd;
741 } 978 }
742} 979}
743 980
744void inline_speed 981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
982inline_speed void
745fd_kill (EV_P_ int fd) 983fd_kill (EV_P_ int fd)
746{ 984{
747 ev_io *w; 985 ev_io *w;
748 986
749 while ((w = (ev_io *)anfds [fd].head)) 987 while ((w = (ev_io *)anfds [fd].head))
… …
751 ev_io_stop (EV_A_ w); 989 ev_io_stop (EV_A_ w);
752 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753 } 991 }
754} 992}
755 993
756int inline_size 994/* check whether the given fd is actually valid, for error recovery */
995inline_size int
757fd_valid (int fd) 996fd_valid (int fd)
758{ 997{
759#ifdef _WIN32 998#ifdef _WIN32
760 return _get_osfhandle (fd) != -1; 999 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
761#else 1000#else
762 return fcntl (fd, F_GETFD) != -1; 1001 return fcntl (fd, F_GETFD) != -1;
763#endif 1002#endif
764} 1003}
765 1004
… …
769{ 1008{
770 int fd; 1009 int fd;
771 1010
772 for (fd = 0; fd < anfdmax; ++fd) 1011 for (fd = 0; fd < anfdmax; ++fd)
773 if (anfds [fd].events) 1012 if (anfds [fd].events)
774 if (!fd_valid (fd) == -1 && errno == EBADF) 1013 if (!fd_valid (fd) && errno == EBADF)
775 fd_kill (EV_A_ fd); 1014 fd_kill (EV_A_ fd);
776} 1015}
777 1016
778/* called on ENOMEM in select/poll to kill some fds and retry */ 1017/* called on ENOMEM in select/poll to kill some fds and retry */
779static void noinline 1018static void noinline
… …
783 1022
784 for (fd = anfdmax; fd--; ) 1023 for (fd = anfdmax; fd--; )
785 if (anfds [fd].events) 1024 if (anfds [fd].events)
786 { 1025 {
787 fd_kill (EV_A_ fd); 1026 fd_kill (EV_A_ fd);
788 return; 1027 break;
789 } 1028 }
790} 1029}
791 1030
792/* usually called after fork if backend needs to re-arm all fds from scratch */ 1031/* usually called after fork if backend needs to re-arm all fds from scratch */
793static void noinline 1032static void noinline
… …
797 1036
798 for (fd = 0; fd < anfdmax; ++fd) 1037 for (fd = 0; fd < anfdmax; ++fd)
799 if (anfds [fd].events) 1038 if (anfds [fd].events)
800 { 1039 {
801 anfds [fd].events = 0; 1040 anfds [fd].events = 0;
1041 anfds [fd].emask = 0;
802 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1042 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
803 } 1043 }
804} 1044}
805 1045
1046/* used to prepare libev internal fd's */
1047/* this is not fork-safe */
1048inline_speed void
1049fd_intern (int fd)
1050{
1051#ifdef _WIN32
1052 unsigned long arg = 1;
1053 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1054#else
1055 fcntl (fd, F_SETFD, FD_CLOEXEC);
1056 fcntl (fd, F_SETFL, O_NONBLOCK);
1057#endif
1058}
1059
806/*****************************************************************************/ 1060/*****************************************************************************/
807 1061
808/* 1062/*
809 * the heap functions want a real array index. array index 0 uis guaranteed to not 1063 * the heap functions want a real array index. array index 0 is guaranteed to not
810 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1064 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
811 * the branching factor of the d-tree. 1065 * the branching factor of the d-tree.
812 */ 1066 */
813 1067
814/* 1068/*
… …
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1077#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1078#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k)) 1079#define UPHEAP_DONE(p,k) ((p) == (k))
826 1080
827/* away from the root */ 1081/* away from the root */
828void inline_speed 1082inline_speed void
829downheap (ANHE *heap, int N, int k) 1083downheap (ANHE *heap, int N, int k)
830{ 1084{
831 ANHE he = heap [k]; 1085 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0; 1086 ANHE *E = heap + N + HEAP0;
833 1087
… …
873#define HEAP0 1 1127#define HEAP0 1
874#define HPARENT(k) ((k) >> 1) 1128#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p)) 1129#define UPHEAP_DONE(p,k) (!(p))
876 1130
877/* away from the root */ 1131/* away from the root */
878void inline_speed 1132inline_speed void
879downheap (ANHE *heap, int N, int k) 1133downheap (ANHE *heap, int N, int k)
880{ 1134{
881 ANHE he = heap [k]; 1135 ANHE he = heap [k];
882 1136
883 for (;;) 1137 for (;;)
884 { 1138 {
885 int c = k << 1; 1139 int c = k << 1;
886 1140
887 if (c > N + HEAP0 - 1) 1141 if (c >= N + HEAP0)
888 break; 1142 break;
889 1143
890 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1144 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891 ? 1 : 0; 1145 ? 1 : 0;
892 1146
… …
903 ev_active (ANHE_w (he)) = k; 1157 ev_active (ANHE_w (he)) = k;
904} 1158}
905#endif 1159#endif
906 1160
907/* towards the root */ 1161/* towards the root */
908void inline_speed 1162inline_speed void
909upheap (ANHE *heap, int k) 1163upheap (ANHE *heap, int k)
910{ 1164{
911 ANHE he = heap [k]; 1165 ANHE he = heap [k];
912 1166
913 for (;;) 1167 for (;;)
… …
924 1178
925 heap [k] = he; 1179 heap [k] = he;
926 ev_active (ANHE_w (he)) = k; 1180 ev_active (ANHE_w (he)) = k;
927} 1181}
928 1182
929void inline_size 1183/* move an element suitably so it is in a correct place */
1184inline_size void
930adjustheap (ANHE *heap, int N, int k) 1185adjustheap (ANHE *heap, int N, int k)
931{ 1186{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1187 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
933 upheap (heap, k); 1188 upheap (heap, k);
934 else 1189 else
935 downheap (heap, N, k); 1190 downheap (heap, N, k);
936} 1191}
937 1192
938/* rebuild the heap: this function is used only once and executed rarely */ 1193/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size 1194inline_size void
940reheap (ANHE *heap, int N) 1195reheap (ANHE *heap, int N)
941{ 1196{
942 int i; 1197 int i;
1198
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1199 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1200 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i) 1201 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0); 1202 upheap (heap, i + HEAP0);
947} 1203}
948 1204
949#if EV_VERIFY
950static void
951checkheap (ANHE *heap, int N)
952{
953 int i;
954
955 for (i = HEAP0; i < N + HEAP0; ++i)
956 {
957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960 }
961}
962#endif
963
964/*****************************************************************************/ 1205/*****************************************************************************/
965 1206
1207/* associate signal watchers to a signal signal */
966typedef struct 1208typedef struct
967{ 1209{
1210 EV_ATOMIC_T pending;
1211#if EV_MULTIPLICITY
1212 EV_P;
1213#endif
968 WL head; 1214 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1215} ANSIG;
971 1216
972static ANSIG *signals; 1217static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976
977void inline_size
978signals_init (ANSIG *base, int count)
979{
980 while (count--)
981 {
982 base->head = 0;
983 base->gotsig = 0;
984
985 ++base;
986 }
987}
988 1218
989/*****************************************************************************/ 1219/*****************************************************************************/
990 1220
991void inline_speed 1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
992fd_intern (int fd)
993{
994#ifdef _WIN32
995 int arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif
1001}
1002 1222
1003static void noinline 1223static void noinline
1004evpipe_init (EV_P) 1224evpipe_init (EV_P)
1005{ 1225{
1006 if (!ev_is_active (&pipeev)) 1226 if (!ev_is_active (&pipe_w))
1007 { 1227 {
1008#if EV_USE_EVENTFD 1228# if EV_USE_EVENTFD
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL)
1009 if ((evfd = eventfd (0, 0)) >= 0) 1231 evfd = eventfd (0, 0);
1232
1233 if (evfd >= 0)
1010 { 1234 {
1011 evpipe [0] = -1; 1235 evpipe [0] = -1;
1012 fd_intern (evfd); 1236 fd_intern (evfd); /* doing it twice doesn't hurt */
1013 ev_io_set (&pipeev, evfd, EV_READ); 1237 ev_io_set (&pipe_w, evfd, EV_READ);
1014 } 1238 }
1015 else 1239 else
1016#endif 1240# endif
1017 { 1241 {
1018 while (pipe (evpipe)) 1242 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe"); 1243 ev_syserr ("(libev) error creating signal/async pipe");
1020 1244
1021 fd_intern (evpipe [0]); 1245 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]); 1246 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ); 1247 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024 } 1248 }
1025 1249
1026 ev_io_start (EV_A_ &pipeev); 1250 ev_io_start (EV_A_ &pipe_w);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */ 1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 } 1252 }
1029} 1253}
1030 1254
1031void inline_size 1255inline_size void
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{ 1257{
1034 if (!*flag) 1258 if (!*flag)
1035 { 1259 {
1036 int old_errno = errno; /* save errno because write might clobber it */ 1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1037 1262
1038 *flag = 1; 1263 *flag = 1;
1039 1264
1040#if EV_USE_EVENTFD 1265#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1266 if (evfd >= 0)
… …
1043 uint64_t counter = 1; 1268 uint64_t counter = 1;
1044 write (evfd, &counter, sizeof (uint64_t)); 1269 write (evfd, &counter, sizeof (uint64_t));
1045 } 1270 }
1046 else 1271 else
1047#endif 1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1048 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1049 1279
1050 errno = old_errno; 1280 errno = old_errno;
1051 } 1281 }
1052} 1282}
1053 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1054static void 1286static void
1055pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1056{ 1288{
1289 int i;
1290
1057#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1292 if (evfd >= 0)
1059 { 1293 {
1060 uint64_t counter; 1294 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
1062 } 1296 }
1063 else 1297 else
1064#endif 1298#endif
1065 { 1299 {
1066 char dummy; 1300 char dummy;
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1067 read (evpipe [0], &dummy, 1); 1302 read (evpipe [0], &dummy, 1);
1068 } 1303 }
1069 1304
1070 if (gotsig && ev_is_default_loop (EV_A)) 1305 if (sig_pending)
1071 { 1306 {
1072 int signum; 1307 sig_pending = 0;
1073 gotsig = 0;
1074 1308
1075 for (signum = signalmax; signum--; ) 1309 for (i = EV_NSIG - 1; i--; )
1076 if (signals [signum].gotsig) 1310 if (expect_false (signals [i].pending))
1077 ev_feed_signal_event (EV_A_ signum + 1); 1311 ev_feed_signal_event (EV_A_ i + 1);
1078 } 1312 }
1079 1313
1080#if EV_ASYNC_ENABLE 1314#if EV_ASYNC_ENABLE
1081 if (gotasync) 1315 if (async_pending)
1082 { 1316 {
1083 int i; 1317 async_pending = 0;
1084 gotasync = 0;
1085 1318
1086 for (i = asynccnt; i--; ) 1319 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent) 1320 if (asyncs [i]->sent)
1088 { 1321 {
1089 asyncs [i]->sent = 0; 1322 asyncs [i]->sent = 0;
… …
1097 1330
1098static void 1331static void
1099ev_sighandler (int signum) 1332ev_sighandler (int signum)
1100{ 1333{
1101#if EV_MULTIPLICITY 1334#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct; 1335 EV_P = signals [signum - 1].loop;
1103#endif 1336#endif
1104 1337
1105#if _WIN32 1338#ifdef _WIN32
1106 signal (signum, ev_sighandler); 1339 signal (signum, ev_sighandler);
1107#endif 1340#endif
1108 1341
1109 signals [signum - 1].gotsig = 1; 1342 signals [signum - 1].pending = 1;
1110 evpipe_write (EV_A_ &gotsig); 1343 evpipe_write (EV_A_ &sig_pending);
1111} 1344}
1112 1345
1113void noinline 1346void noinline
1114ev_feed_signal_event (EV_P_ int signum) 1347ev_feed_signal_event (EV_P_ int signum)
1115{ 1348{
1116 WL w; 1349 WL w;
1117 1350
1351 if (expect_false (signum <= 0 || signum > EV_NSIG))
1352 return;
1353
1354 --signum;
1355
1118#if EV_MULTIPLICITY 1356#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1357 /* it is permissible to try to feed a signal to the wrong loop */
1120#endif 1358 /* or, likely more useful, feeding a signal nobody is waiting for */
1121 1359
1122 --signum; 1360 if (expect_false (signals [signum].loop != EV_A))
1123
1124 if (signum < 0 || signum >= signalmax)
1125 return; 1361 return;
1362#endif
1126 1363
1127 signals [signum].gotsig = 0; 1364 signals [signum].pending = 0;
1128 1365
1129 for (w = signals [signum].head; w; w = w->next) 1366 for (w = signals [signum].head; w; w = w->next)
1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1131} 1368}
1132 1369
1370#if EV_USE_SIGNALFD
1371static void
1372sigfdcb (EV_P_ ev_io *iow, int revents)
1373{
1374 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1375
1376 for (;;)
1377 {
1378 ssize_t res = read (sigfd, si, sizeof (si));
1379
1380 /* not ISO-C, as res might be -1, but works with SuS */
1381 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1382 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1383
1384 if (res < (ssize_t)sizeof (si))
1385 break;
1386 }
1387}
1388#endif
1389
1390#endif
1391
1133/*****************************************************************************/ 1392/*****************************************************************************/
1134 1393
1394#if EV_CHILD_ENABLE
1135static WL childs [EV_PID_HASHSIZE]; 1395static WL childs [EV_PID_HASHSIZE];
1136
1137#ifndef _WIN32
1138 1396
1139static ev_signal childev; 1397static ev_signal childev;
1140 1398
1141#ifndef WIFCONTINUED 1399#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0 1400# define WIFCONTINUED(status) 0
1143#endif 1401#endif
1144 1402
1145void inline_speed 1403/* handle a single child status event */
1404inline_speed void
1146child_reap (EV_P_ int chain, int pid, int status) 1405child_reap (EV_P_ int chain, int pid, int status)
1147{ 1406{
1148 ev_child *w; 1407 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1408 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150 1409
1151 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1410 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1152 { 1411 {
1153 if ((w->pid == pid || !w->pid) 1412 if ((w->pid == pid || !w->pid)
1154 && (!traced || (w->flags & 1))) 1413 && (!traced || (w->flags & 1)))
1155 { 1414 {
1156 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1415 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1163 1422
1164#ifndef WCONTINUED 1423#ifndef WCONTINUED
1165# define WCONTINUED 0 1424# define WCONTINUED 0
1166#endif 1425#endif
1167 1426
1427/* called on sigchld etc., calls waitpid */
1168static void 1428static void
1169childcb (EV_P_ ev_signal *sw, int revents) 1429childcb (EV_P_ ev_signal *sw, int revents)
1170{ 1430{
1171 int pid, status; 1431 int pid, status;
1172 1432
… …
1180 /* make sure we are called again until all children have been reaped */ 1440 /* make sure we are called again until all children have been reaped */
1181 /* we need to do it this way so that the callback gets called before we continue */ 1441 /* we need to do it this way so that the callback gets called before we continue */
1182 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1442 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1183 1443
1184 child_reap (EV_A_ pid, pid, status); 1444 child_reap (EV_A_ pid, pid, status);
1185 if (EV_PID_HASHSIZE > 1) 1445 if ((EV_PID_HASHSIZE) > 1)
1186 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1446 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1187} 1447}
1188 1448
1189#endif 1449#endif
1190 1450
… …
1253 /* kqueue is borked on everything but netbsd apparently */ 1513 /* kqueue is borked on everything but netbsd apparently */
1254 /* it usually doesn't work correctly on anything but sockets and pipes */ 1514 /* it usually doesn't work correctly on anything but sockets and pipes */
1255 flags &= ~EVBACKEND_KQUEUE; 1515 flags &= ~EVBACKEND_KQUEUE;
1256#endif 1516#endif
1257#ifdef __APPLE__ 1517#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation 1518 /* only select works correctly on that "unix-certified" platform */
1259 flags &= ~EVBACKEND_POLL; 1519 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1520 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1521#endif
1522#ifdef __FreeBSD__
1523 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1260#endif 1524#endif
1261 1525
1262 return flags; 1526 return flags;
1263} 1527}
1264 1528
… …
1278ev_backend (EV_P) 1542ev_backend (EV_P)
1279{ 1543{
1280 return backend; 1544 return backend;
1281} 1545}
1282 1546
1547#if EV_FEATURE_API
1283unsigned int 1548unsigned int
1284ev_loop_count (EV_P) 1549ev_iteration (EV_P)
1285{ 1550{
1286 return loop_count; 1551 return loop_count;
1287} 1552}
1288 1553
1554unsigned int
1555ev_depth (EV_P)
1556{
1557 return loop_depth;
1558}
1559
1289void 1560void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1562{
1292 io_blocktime = interval; 1563 io_blocktime = interval;
1293} 1564}
… …
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{ 1568{
1298 timeout_blocktime = interval; 1569 timeout_blocktime = interval;
1299} 1570}
1300 1571
1572void
1573ev_set_userdata (EV_P_ void *data)
1574{
1575 userdata = data;
1576}
1577
1578void *
1579ev_userdata (EV_P)
1580{
1581 return userdata;
1582}
1583
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1585{
1586 invoke_cb = invoke_pending_cb;
1587}
1588
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1590{
1591 release_cb = release;
1592 acquire_cb = acquire;
1593}
1594#endif
1595
1596/* initialise a loop structure, must be zero-initialised */
1301static void noinline 1597static void noinline
1302loop_init (EV_P_ unsigned int flags) 1598loop_init (EV_P_ unsigned int flags)
1303{ 1599{
1304 if (!backend) 1600 if (!backend)
1305 { 1601 {
1602#if EV_USE_REALTIME
1603 if (!have_realtime)
1604 {
1605 struct timespec ts;
1606
1607 if (!clock_gettime (CLOCK_REALTIME, &ts))
1608 have_realtime = 1;
1609 }
1610#endif
1611
1306#if EV_USE_MONOTONIC 1612#if EV_USE_MONOTONIC
1613 if (!have_monotonic)
1307 { 1614 {
1308 struct timespec ts; 1615 struct timespec ts;
1616
1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1617 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310 have_monotonic = 1; 1618 have_monotonic = 1;
1311 } 1619 }
1312#endif 1620#endif
1621
1622 /* pid check not overridable via env */
1623#ifndef _WIN32
1624 if (flags & EVFLAG_FORKCHECK)
1625 curpid = getpid ();
1626#endif
1627
1628 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS"));
1313 1632
1314 ev_rt_now = ev_time (); 1633 ev_rt_now = ev_time ();
1315 mn_now = get_clock (); 1634 mn_now = get_clock ();
1316 now_floor = mn_now; 1635 now_floor = mn_now;
1317 rtmn_diff = ev_rt_now - mn_now; 1636 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending;
1639#endif
1318 1640
1319 io_blocktime = 0.; 1641 io_blocktime = 0.;
1320 timeout_blocktime = 0.; 1642 timeout_blocktime = 0.;
1321 backend = 0; 1643 backend = 0;
1322 backend_fd = -1; 1644 backend_fd = -1;
1323 gotasync = 0; 1645 sig_pending = 0;
1646#if EV_ASYNC_ENABLE
1647 async_pending = 0;
1648#endif
1324#if EV_USE_INOTIFY 1649#if EV_USE_INOTIFY
1325 fs_fd = -2; 1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1326#endif 1651#endif
1327 1652#if EV_USE_SIGNALFD
1328 /* pid check not overridable via env */ 1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1329#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK)
1331 curpid = getpid ();
1332#endif 1654#endif
1333
1334 if (!(flags & EVFLAG_NOENV)
1335 && !enable_secure ()
1336 && getenv ("LIBEV_FLAGS"))
1337 flags = atoi (getenv ("LIBEV_FLAGS"));
1338 1655
1339 if (!(flags & 0x0000ffffU)) 1656 if (!(flags & 0x0000ffffU))
1340 flags |= ev_recommended_backends (); 1657 flags |= ev_recommended_backends ();
1341 1658
1342#if EV_USE_PORT 1659#if EV_USE_PORT
… …
1353#endif 1670#endif
1354#if EV_USE_SELECT 1671#if EV_USE_SELECT
1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1672 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356#endif 1673#endif
1357 1674
1675 ev_prepare_init (&pending_w, pendingcb);
1676
1677#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1358 ev_init (&pipeev, pipecb); 1678 ev_init (&pipe_w, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI); 1679 ev_set_priority (&pipe_w, EV_MAXPRI);
1680#endif
1360 } 1681 }
1361} 1682}
1362 1683
1684/* free up a loop structure */
1363static void noinline 1685static void noinline
1364loop_destroy (EV_P) 1686loop_destroy (EV_P)
1365{ 1687{
1366 int i; 1688 int i;
1367 1689
1368 if (ev_is_active (&pipeev)) 1690 if (ev_is_active (&pipe_w))
1369 { 1691 {
1370 ev_ref (EV_A); /* signal watcher */ 1692 /*ev_ref (EV_A);*/
1371 ev_io_stop (EV_A_ &pipeev); 1693 /*ev_io_stop (EV_A_ &pipe_w);*/
1372 1694
1373#if EV_USE_EVENTFD 1695#if EV_USE_EVENTFD
1374 if (evfd >= 0) 1696 if (evfd >= 0)
1375 close (evfd); 1697 close (evfd);
1376#endif 1698#endif
1377 1699
1378 if (evpipe [0] >= 0) 1700 if (evpipe [0] >= 0)
1379 { 1701 {
1380 close (evpipe [0]); 1702 EV_WIN32_CLOSE_FD (evpipe [0]);
1381 close (evpipe [1]); 1703 EV_WIN32_CLOSE_FD (evpipe [1]);
1382 } 1704 }
1383 } 1705 }
1706
1707#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w))
1709 close (sigfd);
1710#endif
1384 1711
1385#if EV_USE_INOTIFY 1712#if EV_USE_INOTIFY
1386 if (fs_fd >= 0) 1713 if (fs_fd >= 0)
1387 close (fs_fd); 1714 close (fs_fd);
1388#endif 1715#endif
… …
1412#if EV_IDLE_ENABLE 1739#if EV_IDLE_ENABLE
1413 array_free (idle, [i]); 1740 array_free (idle, [i]);
1414#endif 1741#endif
1415 } 1742 }
1416 1743
1417 ev_free (anfds); anfdmax = 0; 1744 ev_free (anfds); anfds = 0; anfdmax = 0;
1418 1745
1419 /* have to use the microsoft-never-gets-it-right macro */ 1746 /* have to use the microsoft-never-gets-it-right macro */
1747 array_free (rfeed, EMPTY);
1420 array_free (fdchange, EMPTY); 1748 array_free (fdchange, EMPTY);
1421 array_free (timer, EMPTY); 1749 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE 1750#if EV_PERIODIC_ENABLE
1423 array_free (periodic, EMPTY); 1751 array_free (periodic, EMPTY);
1424#endif 1752#endif
… …
1433 1761
1434 backend = 0; 1762 backend = 0;
1435} 1763}
1436 1764
1437#if EV_USE_INOTIFY 1765#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P); 1766inline_size void infy_fork (EV_P);
1439#endif 1767#endif
1440 1768
1441void inline_size 1769inline_size void
1442loop_fork (EV_P) 1770loop_fork (EV_P)
1443{ 1771{
1444#if EV_USE_PORT 1772#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1773 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif 1774#endif
… …
1452#endif 1780#endif
1453#if EV_USE_INOTIFY 1781#if EV_USE_INOTIFY
1454 infy_fork (EV_A); 1782 infy_fork (EV_A);
1455#endif 1783#endif
1456 1784
1457 if (ev_is_active (&pipeev)) 1785 if (ev_is_active (&pipe_w))
1458 { 1786 {
1459 /* this "locks" the handlers against writing to the pipe */ 1787 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */ 1788 /* while we modify the fd vars */
1461 gotsig = 1; 1789 sig_pending = 1;
1462#if EV_ASYNC_ENABLE 1790#if EV_ASYNC_ENABLE
1463 gotasync = 1; 1791 async_pending = 1;
1464#endif 1792#endif
1465 1793
1466 ev_ref (EV_A); 1794 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev); 1795 ev_io_stop (EV_A_ &pipe_w);
1468 1796
1469#if EV_USE_EVENTFD 1797#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1798 if (evfd >= 0)
1471 close (evfd); 1799 close (evfd);
1472#endif 1800#endif
1473 1801
1474 if (evpipe [0] >= 0) 1802 if (evpipe [0] >= 0)
1475 { 1803 {
1476 close (evpipe [0]); 1804 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 1806 }
1479 1807
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1480 evpipe_init (EV_A); 1809 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */ 1810 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ); 1811 pipecb (EV_A_ &pipe_w, EV_READ);
1812#endif
1483 } 1813 }
1484 1814
1485 postfork = 0; 1815 postfork = 0;
1486} 1816}
1487 1817
1488#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1819
1489struct ev_loop * 1820struct ev_loop *
1490ev_loop_new (unsigned int flags) 1821ev_loop_new (unsigned int flags)
1491{ 1822{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 1824
1494 memset (loop, 0, sizeof (struct ev_loop)); 1825 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 1826 loop_init (EV_A_ flags);
1497 1827
1498 if (ev_backend (EV_A)) 1828 if (ev_backend (EV_A))
1499 return loop; 1829 return EV_A;
1500 1830
1501 return 0; 1831 return 0;
1502} 1832}
1503 1833
1504void 1834void
… …
1511void 1841void
1512ev_loop_fork (EV_P) 1842ev_loop_fork (EV_P)
1513{ 1843{
1514 postfork = 1; /* must be in line with ev_default_fork */ 1844 postfork = 1; /* must be in line with ev_default_fork */
1515} 1845}
1846#endif /* multiplicity */
1516 1847
1517#if EV_VERIFY 1848#if EV_VERIFY
1518static void 1849static void noinline
1850verify_watcher (EV_P_ W w)
1851{
1852 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1853
1854 if (w->pending)
1855 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1856}
1857
1858static void noinline
1859verify_heap (EV_P_ ANHE *heap, int N)
1860{
1861 int i;
1862
1863 for (i = HEAP0; i < N + HEAP0; ++i)
1864 {
1865 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1866 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1867 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1868
1869 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1870 }
1871}
1872
1873static void noinline
1519array_check (W **ws, int cnt) 1874array_verify (EV_P_ W *ws, int cnt)
1520{ 1875{
1521 while (cnt--) 1876 while (cnt--)
1877 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1878 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1879 verify_watcher (EV_A_ ws [cnt]);
1880 }
1523} 1881}
1882#endif
1524 1883
1525static void 1884#if EV_FEATURE_API
1885void
1526ev_loop_verify (EV_P) 1886ev_verify (EV_P)
1527{ 1887{
1888#if EV_VERIFY
1528 int i; 1889 int i;
1890 WL w;
1529 1891
1892 assert (activecnt >= -1);
1893
1894 assert (fdchangemax >= fdchangecnt);
1895 for (i = 0; i < fdchangecnt; ++i)
1896 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1897
1898 assert (anfdmax >= 0);
1899 for (i = 0; i < anfdmax; ++i)
1900 for (w = anfds [i].head; w; w = w->next)
1901 {
1902 verify_watcher (EV_A_ (W)w);
1903 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1904 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1905 }
1906
1907 assert (timermax >= timercnt);
1530 checkheap (timers, timercnt); 1908 verify_heap (EV_A_ timers, timercnt);
1909
1531#if EV_PERIODIC_ENABLE 1910#if EV_PERIODIC_ENABLE
1911 assert (periodicmax >= periodiccnt);
1532 checkheap (periodics, periodiccnt); 1912 verify_heap (EV_A_ periodics, periodiccnt);
1533#endif 1913#endif
1534 1914
1915 for (i = NUMPRI; i--; )
1916 {
1917 assert (pendingmax [i] >= pendingcnt [i]);
1535#if EV_IDLE_ENABLE 1918#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; ) 1919 assert (idleall >= 0);
1920 assert (idlemax [i] >= idlecnt [i]);
1537 array_check ((W **)idles [i], idlecnt [i]); 1921 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538#endif 1922#endif
1923 }
1924
1539#if EV_FORK_ENABLE 1925#if EV_FORK_ENABLE
1926 assert (forkmax >= forkcnt);
1540 array_check ((W **)forks, forkcnt); 1927 array_verify (EV_A_ (W *)forks, forkcnt);
1541#endif 1928#endif
1542 array_check ((W **)prepares, preparecnt); 1929
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE 1930#if EV_ASYNC_ENABLE
1931 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 1932 array_verify (EV_A_ (W *)asyncs, asynccnt);
1933#endif
1934
1935#if EV_PREPARE_ENABLE
1936 assert (preparemax >= preparecnt);
1937 array_verify (EV_A_ (W *)prepares, preparecnt);
1938#endif
1939
1940#if EV_CHECK_ENABLE
1941 assert (checkmax >= checkcnt);
1942 array_verify (EV_A_ (W *)checks, checkcnt);
1943#endif
1944
1945# if 0
1946#if EV_CHILD_ENABLE
1947 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1948 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1949#endif
1546#endif 1950# endif
1547}
1548#endif 1951#endif
1549 1952}
1550#endif 1953#endif
1551 1954
1552#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1553struct ev_loop * 1956struct ev_loop *
1554ev_default_loop_init (unsigned int flags) 1957ev_default_loop_init (unsigned int flags)
… …
1558#endif 1961#endif
1559{ 1962{
1560 if (!ev_default_loop_ptr) 1963 if (!ev_default_loop_ptr)
1561 { 1964 {
1562#if EV_MULTIPLICITY 1965#if EV_MULTIPLICITY
1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1966 EV_P = ev_default_loop_ptr = &default_loop_struct;
1564#else 1967#else
1565 ev_default_loop_ptr = 1; 1968 ev_default_loop_ptr = 1;
1566#endif 1969#endif
1567 1970
1568 loop_init (EV_A_ flags); 1971 loop_init (EV_A_ flags);
1569 1972
1570 if (ev_backend (EV_A)) 1973 if (ev_backend (EV_A))
1571 { 1974 {
1572#ifndef _WIN32 1975#if EV_CHILD_ENABLE
1573 ev_signal_init (&childev, childcb, SIGCHLD); 1976 ev_signal_init (&childev, childcb, SIGCHLD);
1574 ev_set_priority (&childev, EV_MAXPRI); 1977 ev_set_priority (&childev, EV_MAXPRI);
1575 ev_signal_start (EV_A_ &childev); 1978 ev_signal_start (EV_A_ &childev);
1576 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1979 ev_unref (EV_A); /* child watcher should not keep loop alive */
1577#endif 1980#endif
… …
1585 1988
1586void 1989void
1587ev_default_destroy (void) 1990ev_default_destroy (void)
1588{ 1991{
1589#if EV_MULTIPLICITY 1992#if EV_MULTIPLICITY
1590 struct ev_loop *loop = ev_default_loop_ptr; 1993 EV_P = ev_default_loop_ptr;
1591#endif 1994#endif
1592 1995
1593#ifndef _WIN32 1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1594 ev_ref (EV_A); /* child watcher */ 1999 ev_ref (EV_A); /* child watcher */
1595 ev_signal_stop (EV_A_ &childev); 2000 ev_signal_stop (EV_A_ &childev);
1596#endif 2001#endif
1597 2002
1598 loop_destroy (EV_A); 2003 loop_destroy (EV_A);
… …
1600 2005
1601void 2006void
1602ev_default_fork (void) 2007ev_default_fork (void)
1603{ 2008{
1604#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1605 struct ev_loop *loop = ev_default_loop_ptr; 2010 EV_P = ev_default_loop_ptr;
1606#endif 2011#endif
1607 2012
1608 if (backend)
1609 postfork = 1; /* must be in line with ev_loop_fork */ 2013 postfork = 1; /* must be in line with ev_loop_fork */
1610} 2014}
1611 2015
1612/*****************************************************************************/ 2016/*****************************************************************************/
1613 2017
1614void 2018void
1615ev_invoke (EV_P_ void *w, int revents) 2019ev_invoke (EV_P_ void *w, int revents)
1616{ 2020{
1617 EV_CB_INVOKE ((W)w, revents); 2021 EV_CB_INVOKE ((W)w, revents);
1618} 2022}
1619 2023
1620void inline_speed 2024unsigned int
1621call_pending (EV_P) 2025ev_pending_count (EV_P)
1622{ 2026{
1623 int pri; 2027 int pri;
2028 unsigned int count = 0;
1624 2029
1625 EV_FREQUENT_CHECK; 2030 for (pri = NUMPRI; pri--; )
2031 count += pendingcnt [pri];
2032
2033 return count;
2034}
2035
2036void noinline
2037ev_invoke_pending (EV_P)
2038{
2039 int pri;
1626 2040
1627 for (pri = NUMPRI; pri--; ) 2041 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2042 while (pendingcnt [pri])
1629 { 2043 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2045
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
1635 2048
1636 p->w->pending = 0; 2049 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2050 EV_CB_INVOKE (p->w, p->events);
1638 } 2051 EV_FREQUENT_CHECK;
1639 } 2052 }
1640
1641 EV_FREQUENT_CHECK;
1642} 2053}
1643 2054
1644#if EV_IDLE_ENABLE 2055#if EV_IDLE_ENABLE
1645void inline_size 2056/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */
2058inline_size void
1646idle_reify (EV_P) 2059idle_reify (EV_P)
1647{ 2060{
1648 if (expect_false (idleall)) 2061 if (expect_false (idleall))
1649 { 2062 {
1650 int pri; 2063 int pri;
… …
1662 } 2075 }
1663 } 2076 }
1664} 2077}
1665#endif 2078#endif
1666 2079
1667void inline_size 2080/* make timers pending */
2081inline_size void
1668timers_reify (EV_P) 2082timers_reify (EV_P)
1669{ 2083{
1670 EV_FREQUENT_CHECK; 2084 EV_FREQUENT_CHECK;
1671 2085
1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2086 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673 { 2087 {
1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2088 do
1675
1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678 /* first reschedule or stop timer */
1679 if (w->repeat)
1680 { 2089 {
2090 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2091
2092 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2093
2094 /* first reschedule or stop timer */
2095 if (w->repeat)
2096 {
1681 ev_at (w) += w->repeat; 2097 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now) 2098 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now; 2099 ev_at (w) = mn_now;
1684 2100
1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2101 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686 2102
1687 ANHE_at_cache (timers [HEAP0]); 2103 ANHE_at_cache (timers [HEAP0]);
1688 downheap (timers, timercnt, HEAP0); 2104 downheap (timers, timercnt, HEAP0);
2105 }
2106 else
2107 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2108
2109 EV_FREQUENT_CHECK;
2110 feed_reverse (EV_A_ (W)w);
1689 } 2111 }
1690 else 2112 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692 2113
1693 EV_FREQUENT_CHECK; 2114 feed_reverse_done (EV_A_ EV_TIMER);
1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1695 } 2115 }
1696} 2116}
1697 2117
1698#if EV_PERIODIC_ENABLE 2118#if EV_PERIODIC_ENABLE
1699void inline_size 2119/* make periodics pending */
2120inline_size void
1700periodics_reify (EV_P) 2121periodics_reify (EV_P)
1701{ 2122{
1702 EV_FREQUENT_CHECK; 2123 EV_FREQUENT_CHECK;
2124
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2126 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2127 int feed_count = 0;
1706 2128
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2129 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2130 {
2131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2132
2133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2134
2135 /* first reschedule or stop timer */
2136 if (w->reschedule_cb)
2137 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2138 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2139
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2140 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2141
1716 ANHE_at_cache (periodics [HEAP0]); 2142 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2143 downheap (periodics, periodiccnt, HEAP0);
2144 }
2145 else if (w->interval)
2146 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0);
2163 }
2164 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2166
1718 EV_FREQUENT_CHECK; 2167 EV_FREQUENT_CHECK;
2168 feed_reverse (EV_A_ (W)w);
1719 } 2169 }
1720 else if (w->interval) 2170 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728 2171
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
1738 }
1739 else
1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742 EV_FREQUENT_CHECK;
1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2172 feed_reverse_done (EV_A_ EV_PERIODIC);
1744 } 2173 }
1745} 2174}
1746 2175
2176/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */
1747static void noinline 2178static void noinline
1748periodics_reschedule (EV_P) 2179periodics_reschedule (EV_P)
1749{ 2180{
1750 int i; 2181 int i;
1751 2182
… …
1764 2195
1765 reheap (periodics, periodiccnt); 2196 reheap (periodics, periodiccnt);
1766} 2197}
1767#endif 2198#endif
1768 2199
1769void inline_speed 2200/* adjust all timers by a given offset */
2201static void noinline
2202timers_reschedule (EV_P_ ev_tstamp adjust)
2203{
2204 int i;
2205
2206 for (i = 0; i < timercnt; ++i)
2207 {
2208 ANHE *he = timers + i + HEAP0;
2209 ANHE_w (*he)->at += adjust;
2210 ANHE_at_cache (*he);
2211 }
2212}
2213
2214/* fetch new monotonic and realtime times from the kernel */
2215/* also detect if there was a timejump, and act accordingly */
2216inline_speed void
1770time_update (EV_P_ ev_tstamp max_block) 2217time_update (EV_P_ ev_tstamp max_block)
1771{ 2218{
1772 int i;
1773
1774#if EV_USE_MONOTONIC 2219#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic)) 2220 if (expect_true (have_monotonic))
1776 { 2221 {
2222 int i;
1777 ev_tstamp odiff = rtmn_diff; 2223 ev_tstamp odiff = rtmn_diff;
1778 2224
1779 mn_now = get_clock (); 2225 mn_now = get_clock ();
1780 2226
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2227 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1807 ev_rt_now = ev_time (); 2253 ev_rt_now = ev_time ();
1808 mn_now = get_clock (); 2254 mn_now = get_clock ();
1809 now_floor = mn_now; 2255 now_floor = mn_now;
1810 } 2256 }
1811 2257
2258 /* no timer adjustment, as the monotonic clock doesn't jump */
2259 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812# if EV_PERIODIC_ENABLE 2260# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A); 2261 periodics_reschedule (EV_A);
1814# endif 2262# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 } 2263 }
1818 else 2264 else
1819#endif 2265#endif
1820 { 2266 {
1821 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1822 2268
1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2269 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824 { 2270 {
2271 /* adjust timers. this is easy, as the offset is the same for all of them */
2272 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825#if EV_PERIODIC_ENABLE 2273#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A); 2274 periodics_reschedule (EV_A);
1827#endif 2275#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
1830 {
1831 ANHE *he = timers + i + HEAP0;
1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
1833 ANHE_at_cache (*he);
1834 }
1835 } 2276 }
1836 2277
1837 mn_now = ev_rt_now; 2278 mn_now = ev_rt_now;
1838 } 2279 }
1839} 2280}
1840 2281
1841void 2282void
1842ev_ref (EV_P)
1843{
1844 ++activecnt;
1845}
1846
1847void
1848ev_unref (EV_P)
1849{
1850 --activecnt;
1851}
1852
1853static int loop_done;
1854
1855void
1856ev_loop (EV_P_ int flags) 2283ev_run (EV_P_ int flags)
1857{ 2284{
2285#if EV_FEATURE_API
2286 ++loop_depth;
2287#endif
2288
2289 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2290
1858 loop_done = EVUNLOOP_CANCEL; 2291 loop_done = EVBREAK_CANCEL;
1859 2292
1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2293 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1861 2294
1862 do 2295 do
1863 { 2296 {
2297#if EV_VERIFY >= 2
2298 ev_verify (EV_A);
2299#endif
2300
1864#ifndef _WIN32 2301#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */ 2302 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid)) 2303 if (expect_false (getpid () != curpid))
1867 { 2304 {
1868 curpid = getpid (); 2305 curpid = getpid ();
… …
1874 /* we might have forked, so queue fork handlers */ 2311 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork)) 2312 if (expect_false (postfork))
1876 if (forkcnt) 2313 if (forkcnt)
1877 { 2314 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2315 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A); 2316 EV_INVOKE_PENDING;
1880 } 2317 }
1881#endif 2318#endif
1882 2319
2320#if EV_PREPARE_ENABLE
1883 /* queue prepare watchers (and execute them) */ 2321 /* queue prepare watchers (and execute them) */
1884 if (expect_false (preparecnt)) 2322 if (expect_false (preparecnt))
1885 { 2323 {
1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2324 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887 call_pending (EV_A); 2325 EV_INVOKE_PENDING;
1888 } 2326 }
2327#endif
1889 2328
1890 if (expect_false (!activecnt)) 2329 if (expect_false (loop_done))
1891 break; 2330 break;
1892 2331
1893 /* we might have forked, so reify kernel state if necessary */ 2332 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork)) 2333 if (expect_false (postfork))
1895 loop_fork (EV_A); 2334 loop_fork (EV_A);
… …
1900 /* calculate blocking time */ 2339 /* calculate blocking time */
1901 { 2340 {
1902 ev_tstamp waittime = 0.; 2341 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.; 2342 ev_tstamp sleeptime = 0.;
1904 2343
2344 /* remember old timestamp for io_blocktime calculation */
2345 ev_tstamp prev_mn_now = mn_now;
2346
2347 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100);
2349
1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1906 { 2351 {
1907 /* update time to cancel out callback processing overhead */
1908 time_update (EV_A_ 1e100);
1909
1910 waittime = MAX_BLOCKTIME; 2352 waittime = MAX_BLOCKTIME;
1911 2353
1912 if (timercnt) 2354 if (timercnt)
1913 { 2355 {
1914 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1922 if (waittime > to) waittime = to; 2364 if (waittime > to) waittime = to;
1923 } 2365 }
1924#endif 2366#endif
1925 2367
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */
1926 if (expect_false (waittime < timeout_blocktime)) 2369 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime; 2370 waittime = timeout_blocktime;
1928 2371
1929 sleeptime = waittime - backend_fudge; 2372 /* extra check because io_blocktime is commonly 0 */
1930
1931 if (expect_true (sleeptime > io_blocktime)) 2373 if (expect_false (io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 { 2374 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376
2377 if (sleeptime > waittime - backend_fudge)
2378 sleeptime = waittime - backend_fudge;
2379
2380 if (expect_true (sleeptime > 0.))
2381 {
1936 ev_sleep (sleeptime); 2382 ev_sleep (sleeptime);
1937 waittime -= sleeptime; 2383 waittime -= sleeptime;
2384 }
1938 } 2385 }
1939 } 2386 }
1940 2387
2388#if EV_FEATURE_API
1941 ++loop_count; 2389 ++loop_count;
2390#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1942 backend_poll (EV_A_ waittime); 2392 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1943 2394
1944 /* update ev_rt_now, do magic */ 2395 /* update ev_rt_now, do magic */
1945 time_update (EV_A_ waittime + sleeptime); 2396 time_update (EV_A_ waittime + sleeptime);
1946 } 2397 }
1947 2398
… …
1954#if EV_IDLE_ENABLE 2405#if EV_IDLE_ENABLE
1955 /* queue idle watchers unless other events are pending */ 2406 /* queue idle watchers unless other events are pending */
1956 idle_reify (EV_A); 2407 idle_reify (EV_A);
1957#endif 2408#endif
1958 2409
2410#if EV_CHECK_ENABLE
1959 /* queue check watchers, to be executed first */ 2411 /* queue check watchers, to be executed first */
1960 if (expect_false (checkcnt)) 2412 if (expect_false (checkcnt))
1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2413 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2414#endif
1962 2415
1963 call_pending (EV_A); 2416 EV_INVOKE_PENDING;
1964 } 2417 }
1965 while (expect_true ( 2418 while (expect_true (
1966 activecnt 2419 activecnt
1967 && !loop_done 2420 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2421 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1969 )); 2422 ));
1970 2423
1971 if (loop_done == EVUNLOOP_ONE) 2424 if (loop_done == EVBREAK_ONE)
1972 loop_done = EVUNLOOP_CANCEL; 2425 loop_done = EVBREAK_CANCEL;
1973}
1974 2426
2427#if EV_FEATURE_API
2428 --loop_depth;
2429#endif
2430}
2431
1975void 2432void
1976ev_unloop (EV_P_ int how) 2433ev_break (EV_P_ int how)
1977{ 2434{
1978 loop_done = how; 2435 loop_done = how;
1979} 2436}
1980 2437
2438void
2439ev_ref (EV_P)
2440{
2441 ++activecnt;
2442}
2443
2444void
2445ev_unref (EV_P)
2446{
2447 --activecnt;
2448}
2449
2450void
2451ev_now_update (EV_P)
2452{
2453 time_update (EV_A_ 1e100);
2454}
2455
2456void
2457ev_suspend (EV_P)
2458{
2459 ev_now_update (EV_A);
2460}
2461
2462void
2463ev_resume (EV_P)
2464{
2465 ev_tstamp mn_prev = mn_now;
2466
2467 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev);
2469#if EV_PERIODIC_ENABLE
2470 /* TODO: really do this? */
2471 periodics_reschedule (EV_A);
2472#endif
2473}
2474
1981/*****************************************************************************/ 2475/*****************************************************************************/
2476/* singly-linked list management, used when the expected list length is short */
1982 2477
1983void inline_size 2478inline_size void
1984wlist_add (WL *head, WL elem) 2479wlist_add (WL *head, WL elem)
1985{ 2480{
1986 elem->next = *head; 2481 elem->next = *head;
1987 *head = elem; 2482 *head = elem;
1988} 2483}
1989 2484
1990void inline_size 2485inline_size void
1991wlist_del (WL *head, WL elem) 2486wlist_del (WL *head, WL elem)
1992{ 2487{
1993 while (*head) 2488 while (*head)
1994 { 2489 {
1995 if (*head == elem) 2490 if (expect_true (*head == elem))
1996 { 2491 {
1997 *head = elem->next; 2492 *head = elem->next;
1998 return; 2493 break;
1999 } 2494 }
2000 2495
2001 head = &(*head)->next; 2496 head = &(*head)->next;
2002 } 2497 }
2003} 2498}
2004 2499
2005void inline_speed 2500/* internal, faster, version of ev_clear_pending */
2501inline_speed void
2006clear_pending (EV_P_ W w) 2502clear_pending (EV_P_ W w)
2007{ 2503{
2008 if (w->pending) 2504 if (w->pending)
2009 { 2505 {
2010 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2506 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011 w->pending = 0; 2507 w->pending = 0;
2012 } 2508 }
2013} 2509}
2014 2510
2015int 2511int
… …
2019 int pending = w_->pending; 2515 int pending = w_->pending;
2020 2516
2021 if (expect_true (pending)) 2517 if (expect_true (pending))
2022 { 2518 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2519 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2520 p->w = (W)&pending_w;
2024 w_->pending = 0; 2521 w_->pending = 0;
2025 p->w = 0;
2026 return p->events; 2522 return p->events;
2027 } 2523 }
2028 else 2524 else
2029 return 0; 2525 return 0;
2030} 2526}
2031 2527
2032void inline_size 2528inline_size void
2033pri_adjust (EV_P_ W w) 2529pri_adjust (EV_P_ W w)
2034{ 2530{
2035 int pri = w->priority; 2531 int pri = ev_priority (w);
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2532 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2533 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri; 2534 ev_set_priority (w, pri);
2039} 2535}
2040 2536
2041void inline_speed 2537inline_speed void
2042ev_start (EV_P_ W w, int active) 2538ev_start (EV_P_ W w, int active)
2043{ 2539{
2044 pri_adjust (EV_A_ w); 2540 pri_adjust (EV_A_ w);
2045 w->active = active; 2541 w->active = active;
2046 ev_ref (EV_A); 2542 ev_ref (EV_A);
2047} 2543}
2048 2544
2049void inline_size 2545inline_size void
2050ev_stop (EV_P_ W w) 2546ev_stop (EV_P_ W w)
2051{ 2547{
2052 ev_unref (EV_A); 2548 ev_unref (EV_A);
2053 w->active = 0; 2549 w->active = 0;
2054} 2550}
… …
2061 int fd = w->fd; 2557 int fd = w->fd;
2062 2558
2063 if (expect_false (ev_is_active (w))) 2559 if (expect_false (ev_is_active (w)))
2064 return; 2560 return;
2065 2561
2066 assert (("ev_io_start called with negative fd", fd >= 0)); 2562 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2563 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067 2564
2068 EV_FREQUENT_CHECK; 2565 EV_FREQUENT_CHECK;
2069 2566
2070 ev_start (EV_A_ (W)w, 1); 2567 ev_start (EV_A_ (W)w, 1);
2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072 wlist_add (&anfds[fd].head, (WL)w); 2569 wlist_add (&anfds[fd].head, (WL)w);
2073 2570
2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2075 w->events &= ~EV_IOFDSET; 2572 w->events &= ~EV__IOFDSET;
2076 2573
2077 EV_FREQUENT_CHECK; 2574 EV_FREQUENT_CHECK;
2078} 2575}
2079 2576
2080void noinline 2577void noinline
… …
2082{ 2579{
2083 clear_pending (EV_A_ (W)w); 2580 clear_pending (EV_A_ (W)w);
2084 if (expect_false (!ev_is_active (w))) 2581 if (expect_false (!ev_is_active (w)))
2085 return; 2582 return;
2086 2583
2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2584 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088 2585
2089 EV_FREQUENT_CHECK; 2586 EV_FREQUENT_CHECK;
2090 2587
2091 wlist_del (&anfds[w->fd].head, (WL)w); 2588 wlist_del (&anfds[w->fd].head, (WL)w);
2092 ev_stop (EV_A_ (W)w); 2589 ev_stop (EV_A_ (W)w);
2093 2590
2094 fd_change (EV_A_ w->fd, 1); 2591 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2095 2592
2096 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2097} 2594}
2098 2595
2099void noinline 2596void noinline
… …
2102 if (expect_false (ev_is_active (w))) 2599 if (expect_false (ev_is_active (w)))
2103 return; 2600 return;
2104 2601
2105 ev_at (w) += mn_now; 2602 ev_at (w) += mn_now;
2106 2603
2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2604 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108 2605
2109 EV_FREQUENT_CHECK; 2606 EV_FREQUENT_CHECK;
2110 2607
2111 ++timercnt; 2608 ++timercnt;
2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2609 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2115 ANHE_at_cache (timers [ev_active (w)]); 2612 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w)); 2613 upheap (timers, ev_active (w));
2117 2614
2118 EV_FREQUENT_CHECK; 2615 EV_FREQUENT_CHECK;
2119 2616
2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2617 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121} 2618}
2122 2619
2123void noinline 2620void noinline
2124ev_timer_stop (EV_P_ ev_timer *w) 2621ev_timer_stop (EV_P_ ev_timer *w)
2125{ 2622{
… …
2130 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2131 2628
2132 { 2629 {
2133 int active = ev_active (w); 2630 int active = ev_active (w);
2134 2631
2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2632 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136 2633
2137 --timercnt; 2634 --timercnt;
2138 2635
2139 if (expect_true (active < timercnt + HEAP0)) 2636 if (expect_true (active < timercnt + HEAP0))
2140 { 2637 {
2141 timers [active] = timers [timercnt + HEAP0]; 2638 timers [active] = timers [timercnt + HEAP0];
2142 adjustheap (timers, timercnt, active); 2639 adjustheap (timers, timercnt, active);
2143 } 2640 }
2144 } 2641 }
2145 2642
2146 EV_FREQUENT_CHECK;
2147
2148 ev_at (w) -= mn_now; 2643 ev_at (w) -= mn_now;
2149 2644
2150 ev_stop (EV_A_ (W)w); 2645 ev_stop (EV_A_ (W)w);
2646
2647 EV_FREQUENT_CHECK;
2151} 2648}
2152 2649
2153void noinline 2650void noinline
2154ev_timer_again (EV_P_ ev_timer *w) 2651ev_timer_again (EV_P_ ev_timer *w)
2155{ 2652{
… …
2173 } 2670 }
2174 2671
2175 EV_FREQUENT_CHECK; 2672 EV_FREQUENT_CHECK;
2176} 2673}
2177 2674
2675ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w)
2677{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2679}
2680
2178#if EV_PERIODIC_ENABLE 2681#if EV_PERIODIC_ENABLE
2179void noinline 2682void noinline
2180ev_periodic_start (EV_P_ ev_periodic *w) 2683ev_periodic_start (EV_P_ ev_periodic *w)
2181{ 2684{
2182 if (expect_false (ev_is_active (w))) 2685 if (expect_false (ev_is_active (w)))
… …
2184 2687
2185 if (w->reschedule_cb) 2688 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval) 2690 else if (w->interval)
2188 { 2691 {
2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190 /* this formula differs from the one in periodic_reify because we do not always round up */ 2693 /* this formula differs from the one in periodic_reify because we do not always round up */
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192 } 2695 }
2193 else 2696 else
2194 ev_at (w) = w->offset; 2697 ev_at (w) = w->offset;
… …
2202 ANHE_at_cache (periodics [ev_active (w)]); 2705 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w)); 2706 upheap (periodics, ev_active (w));
2204 2707
2205 EV_FREQUENT_CHECK; 2708 EV_FREQUENT_CHECK;
2206 2709
2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2710 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208} 2711}
2209 2712
2210void noinline 2713void noinline
2211ev_periodic_stop (EV_P_ ev_periodic *w) 2714ev_periodic_stop (EV_P_ ev_periodic *w)
2212{ 2715{
… …
2217 EV_FREQUENT_CHECK; 2720 EV_FREQUENT_CHECK;
2218 2721
2219 { 2722 {
2220 int active = ev_active (w); 2723 int active = ev_active (w);
2221 2724
2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2725 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223 2726
2224 --periodiccnt; 2727 --periodiccnt;
2225 2728
2226 if (expect_true (active < periodiccnt + HEAP0)) 2729 if (expect_true (active < periodiccnt + HEAP0))
2227 { 2730 {
2228 periodics [active] = periodics [periodiccnt + HEAP0]; 2731 periodics [active] = periodics [periodiccnt + HEAP0];
2229 adjustheap (periodics, periodiccnt, active); 2732 adjustheap (periodics, periodiccnt, active);
2230 } 2733 }
2231 } 2734 }
2232 2735
2233 EV_FREQUENT_CHECK;
2234
2235 ev_stop (EV_A_ (W)w); 2736 ev_stop (EV_A_ (W)w);
2737
2738 EV_FREQUENT_CHECK;
2236} 2739}
2237 2740
2238void noinline 2741void noinline
2239ev_periodic_again (EV_P_ ev_periodic *w) 2742ev_periodic_again (EV_P_ ev_periodic *w)
2240{ 2743{
… …
2246 2749
2247#ifndef SA_RESTART 2750#ifndef SA_RESTART
2248# define SA_RESTART 0 2751# define SA_RESTART 0
2249#endif 2752#endif
2250 2753
2754#if EV_SIGNAL_ENABLE
2755
2251void noinline 2756void noinline
2252ev_signal_start (EV_P_ ev_signal *w) 2757ev_signal_start (EV_P_ ev_signal *w)
2253{ 2758{
2254#if EV_MULTIPLICITY
2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256#endif
2257 if (expect_false (ev_is_active (w))) 2759 if (expect_false (ev_is_active (w)))
2258 return; 2760 return;
2259 2761
2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2261 2763
2262 evpipe_init (EV_A); 2764#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2263 2767
2264 EV_FREQUENT_CHECK; 2768 signals [w->signum - 1].loop = EV_A;
2769#endif
2265 2770
2771 EV_FREQUENT_CHECK;
2772
2773#if EV_USE_SIGNALFD
2774 if (sigfd == -2)
2266 { 2775 {
2267#ifndef _WIN32 2776 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2268 sigset_t full, prev; 2777 if (sigfd < 0 && errno == EINVAL)
2269 sigfillset (&full); 2778 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272 2779
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2780 if (sigfd >= 0)
2781 {
2782 fd_intern (sigfd); /* doing it twice will not hurt */
2274 2783
2275#ifndef _WIN32 2784 sigemptyset (&sigfd_set);
2276 sigprocmask (SIG_SETMASK, &prev, 0); 2785
2277#endif 2786 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2787 ev_set_priority (&sigfd_w, EV_MAXPRI);
2788 ev_io_start (EV_A_ &sigfd_w);
2789 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2790 }
2278 } 2791 }
2792
2793 if (sigfd >= 0)
2794 {
2795 /* TODO: check .head */
2796 sigaddset (&sigfd_set, w->signum);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2798
2799 signalfd (sigfd, &sigfd_set, 0);
2800 }
2801#endif
2279 2802
2280 ev_start (EV_A_ (W)w, 1); 2803 ev_start (EV_A_ (W)w, 1);
2281 wlist_add (&signals [w->signum - 1].head, (WL)w); 2804 wlist_add (&signals [w->signum - 1].head, (WL)w);
2282 2805
2283 if (!((WL)w)->next) 2806 if (!((WL)w)->next)
2807# if EV_USE_SIGNALFD
2808 if (sigfd < 0) /*TODO*/
2809# endif
2284 { 2810 {
2285#if _WIN32 2811# ifdef _WIN32
2812 evpipe_init (EV_A);
2813
2286 signal (w->signum, ev_sighandler); 2814 signal (w->signum, ev_sighandler);
2287#else 2815# else
2288 struct sigaction sa; 2816 struct sigaction sa;
2817
2818 evpipe_init (EV_A);
2819
2289 sa.sa_handler = ev_sighandler; 2820 sa.sa_handler = ev_sighandler;
2290 sigfillset (&sa.sa_mask); 2821 sigfillset (&sa.sa_mask);
2291 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2292 sigaction (w->signum, &sa, 0); 2823 sigaction (w->signum, &sa, 0);
2824
2825 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2293#endif 2828#endif
2294 } 2829 }
2295 2830
2296 EV_FREQUENT_CHECK; 2831 EV_FREQUENT_CHECK;
2297} 2832}
2298 2833
2299void noinline 2834void noinline
… …
2307 2842
2308 wlist_del (&signals [w->signum - 1].head, (WL)w); 2843 wlist_del (&signals [w->signum - 1].head, (WL)w);
2309 ev_stop (EV_A_ (W)w); 2844 ev_stop (EV_A_ (W)w);
2310 2845
2311 if (!signals [w->signum - 1].head) 2846 if (!signals [w->signum - 1].head)
2847 {
2848#if EV_MULTIPLICITY
2849 signals [w->signum - 1].loop = 0; /* unattach from signal */
2850#endif
2851#if EV_USE_SIGNALFD
2852 if (sigfd >= 0)
2853 {
2854 sigset_t ss;
2855
2856 sigemptyset (&ss);
2857 sigaddset (&ss, w->signum);
2858 sigdelset (&sigfd_set, w->signum);
2859
2860 signalfd (sigfd, &sigfd_set, 0);
2861 sigprocmask (SIG_UNBLOCK, &ss, 0);
2862 }
2863 else
2864#endif
2312 signal (w->signum, SIG_DFL); 2865 signal (w->signum, SIG_DFL);
2866 }
2313 2867
2314 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2315} 2869}
2870
2871#endif
2872
2873#if EV_CHILD_ENABLE
2316 2874
2317void 2875void
2318ev_child_start (EV_P_ ev_child *w) 2876ev_child_start (EV_P_ ev_child *w)
2319{ 2877{
2320#if EV_MULTIPLICITY 2878#if EV_MULTIPLICITY
2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2879 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322#endif 2880#endif
2323 if (expect_false (ev_is_active (w))) 2881 if (expect_false (ev_is_active (w)))
2324 return; 2882 return;
2325 2883
2326 EV_FREQUENT_CHECK; 2884 EV_FREQUENT_CHECK;
2327 2885
2328 ev_start (EV_A_ (W)w, 1); 2886 ev_start (EV_A_ (W)w, 1);
2329 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2887 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2330 2888
2331 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2332} 2890}
2333 2891
2334void 2892void
… …
2338 if (expect_false (!ev_is_active (w))) 2896 if (expect_false (!ev_is_active (w)))
2339 return; 2897 return;
2340 2898
2341 EV_FREQUENT_CHECK; 2899 EV_FREQUENT_CHECK;
2342 2900
2343 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2344 ev_stop (EV_A_ (W)w); 2902 ev_stop (EV_A_ (W)w);
2345 2903
2346 EV_FREQUENT_CHECK; 2904 EV_FREQUENT_CHECK;
2347} 2905}
2906
2907#endif
2348 2908
2349#if EV_STAT_ENABLE 2909#if EV_STAT_ENABLE
2350 2910
2351# ifdef _WIN32 2911# ifdef _WIN32
2352# undef lstat 2912# undef lstat
2353# define lstat(a,b) _stati64 (a,b) 2913# define lstat(a,b) _stati64 (a,b)
2354# endif 2914# endif
2355 2915
2356#define DEF_STAT_INTERVAL 5.0074891 2916#define DEF_STAT_INTERVAL 5.0074891
2917#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357#define MIN_STAT_INTERVAL 0.1074891 2918#define MIN_STAT_INTERVAL 0.1074891
2358 2919
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360 2921
2361#if EV_USE_INOTIFY 2922#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192 2923
2924/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2363 2926
2364static void noinline 2927static void noinline
2365infy_add (EV_P_ ev_stat *w) 2928infy_add (EV_P_ ev_stat *w)
2366{ 2929{
2367 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2930 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2368 2931
2369 if (w->wd < 0) 2932 if (w->wd >= 0)
2933 {
2934 struct statfs sfs;
2935
2936 /* now local changes will be tracked by inotify, but remote changes won't */
2937 /* unless the filesystem is known to be local, we therefore still poll */
2938 /* also do poll on <2.6.25, but with normal frequency */
2939
2940 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */
2945 || sfs.f_type == 0x3153464a /* jfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */
2948 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2370 { 2952 }
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2953 else
2954 {
2955 /* can't use inotify, continue to stat */
2956 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2372 2957
2373 /* monitor some parent directory for speedup hints */ 2958 /* if path is not there, monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2959 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2375 /* but an efficiency issue only */ 2960 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2961 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 { 2962 {
2378 char path [4096]; 2963 char path [4096];
2379 strcpy (path, w->path); 2964 strcpy (path, w->path);
… …
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2968 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2969 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385 2970
2386 char *pend = strrchr (path, '/'); 2971 char *pend = strrchr (path, '/');
2387 2972
2388 if (!pend) 2973 if (!pend || pend == path)
2389 break; /* whoops, no '/', complain to your admin */ 2974 break;
2390 2975
2391 *pend = 0; 2976 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask); 2977 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 } 2978 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 } 2980 }
2396 } 2981 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399 2982
2400 if (w->wd >= 0) 2983 if (w->wd >= 0)
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2984 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2985
2986 /* now re-arm timer, if required */
2987 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2988 ev_timer_again (EV_A_ &w->timer);
2989 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2402} 2990}
2403 2991
2404static void noinline 2992static void noinline
2405infy_del (EV_P_ ev_stat *w) 2993infy_del (EV_P_ ev_stat *w)
2406{ 2994{
… …
2409 2997
2410 if (wd < 0) 2998 if (wd < 0)
2411 return; 2999 return;
2412 3000
2413 w->wd = -2; 3001 w->wd = -2;
2414 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3002 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2415 wlist_del (&fs_hash [slot].head, (WL)w); 3003 wlist_del (&fs_hash [slot].head, (WL)w);
2416 3004
2417 /* remove this watcher, if others are watching it, they will rearm */ 3005 /* remove this watcher, if others are watching it, they will rearm */
2418 inotify_rm_watch (fs_fd, wd); 3006 inotify_rm_watch (fs_fd, wd);
2419} 3007}
2420 3008
2421static void noinline 3009static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3010infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{ 3011{
2424 if (slot < 0) 3012 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */ 3013 /* overflow, need to check for all hash slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3014 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2427 infy_wd (EV_A_ slot, wd, ev); 3015 infy_wd (EV_A_ slot, wd, ev);
2428 else 3016 else
2429 { 3017 {
2430 WL w_; 3018 WL w_;
2431 3019
2432 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3020 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2433 { 3021 {
2434 ev_stat *w = (ev_stat *)w_; 3022 ev_stat *w = (ev_stat *)w_;
2435 w_ = w_->next; /* lets us remove this watcher and all before it */ 3023 w_ = w_->next; /* lets us remove this watcher and all before it */
2436 3024
2437 if (w->wd == wd || wd == -1) 3025 if (w->wd == wd || wd == -1)
2438 { 3026 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3027 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 { 3028 {
3029 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2441 w->wd = -1; 3030 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */ 3031 infy_add (EV_A_ w); /* re-add, no matter what */
2443 } 3032 }
2444 3033
2445 stat_timer_cb (EV_A_ &w->timer, 0); 3034 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2450 3039
2451static void 3040static void
2452infy_cb (EV_P_ ev_io *w, int revents) 3041infy_cb (EV_P_ ev_io *w, int revents)
2453{ 3042{
2454 char buf [EV_INOTIFY_BUFSIZE]; 3043 char buf [EV_INOTIFY_BUFSIZE];
2455 struct inotify_event *ev = (struct inotify_event *)buf;
2456 int ofs; 3044 int ofs;
2457 int len = read (fs_fd, buf, sizeof (buf)); 3045 int len = read (fs_fd, buf, sizeof (buf));
2458 3046
2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3047 for (ofs = 0; ofs < len; )
3048 {
3049 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2460 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3050 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len;
3052 }
2461} 3053}
2462 3054
2463void inline_size 3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085}
3086
3087inline_size void
3088ev_check_2625 (EV_P)
3089{
3090 /* kernels < 2.6.25 are borked
3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3092 */
3093 if (ev_linux_version () < 0x020619)
3094 return;
3095
3096 fs_2625 = 1;
3097}
3098
3099inline_size int
3100infy_newfd (void)
3101{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0)
3105 return fd;
3106#endif
3107 return inotify_init ();
3108}
3109
3110inline_size void
2464infy_init (EV_P) 3111infy_init (EV_P)
2465{ 3112{
2466 if (fs_fd != -2) 3113 if (fs_fd != -2)
2467 return; 3114 return;
2468 3115
3116 fs_fd = -1;
3117
3118 ev_check_2625 (EV_A);
3119
2469 fs_fd = inotify_init (); 3120 fs_fd = infy_newfd ();
2470 3121
2471 if (fs_fd >= 0) 3122 if (fs_fd >= 0)
2472 { 3123 {
3124 fd_intern (fs_fd);
2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3125 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474 ev_set_priority (&fs_w, EV_MAXPRI); 3126 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w); 3127 ev_io_start (EV_A_ &fs_w);
3128 ev_unref (EV_A);
2476 } 3129 }
2477} 3130}
2478 3131
2479void inline_size 3132inline_size void
2480infy_fork (EV_P) 3133infy_fork (EV_P)
2481{ 3134{
2482 int slot; 3135 int slot;
2483 3136
2484 if (fs_fd < 0) 3137 if (fs_fd < 0)
2485 return; 3138 return;
2486 3139
3140 ev_ref (EV_A);
3141 ev_io_stop (EV_A_ &fs_w);
2487 close (fs_fd); 3142 close (fs_fd);
2488 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2489 3144
3145 if (fs_fd >= 0)
3146 {
3147 fd_intern (fs_fd);
3148 ev_io_set (&fs_w, fs_fd, EV_READ);
3149 ev_io_start (EV_A_ &fs_w);
3150 ev_unref (EV_A);
3151 }
3152
2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3153 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2491 { 3154 {
2492 WL w_ = fs_hash [slot].head; 3155 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0; 3156 fs_hash [slot].head = 0;
2494 3157
2495 while (w_) 3158 while (w_)
… …
2500 w->wd = -1; 3163 w->wd = -1;
2501 3164
2502 if (fs_fd >= 0) 3165 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3166 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else 3167 else
3168 {
3169 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3170 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2505 ev_timer_start (EV_A_ &w->timer); 3171 ev_timer_again (EV_A_ &w->timer);
3172 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3173 }
2506 } 3174 }
2507
2508 } 3175 }
2509} 3176}
2510 3177
3178#endif
3179
3180#ifdef _WIN32
3181# define EV_LSTAT(p,b) _stati64 (p, b)
3182#else
3183# define EV_LSTAT(p,b) lstat (p, b)
2511#endif 3184#endif
2512 3185
2513void 3186void
2514ev_stat_stat (EV_P_ ev_stat *w) 3187ev_stat_stat (EV_P_ ev_stat *w)
2515{ 3188{
… …
2522static void noinline 3195static void noinline
2523stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3196stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2524{ 3197{
2525 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2526 3199
2527 /* we copy this here each the time so that */ 3200 ev_statdata prev = w->attr;
2528 /* prev has the old value when the callback gets invoked */
2529 w->prev = w->attr;
2530 ev_stat_stat (EV_A_ w); 3201 ev_stat_stat (EV_A_ w);
2531 3202
2532 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3203 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2533 if ( 3204 if (
2534 w->prev.st_dev != w->attr.st_dev 3205 prev.st_dev != w->attr.st_dev
2535 || w->prev.st_ino != w->attr.st_ino 3206 || prev.st_ino != w->attr.st_ino
2536 || w->prev.st_mode != w->attr.st_mode 3207 || prev.st_mode != w->attr.st_mode
2537 || w->prev.st_nlink != w->attr.st_nlink 3208 || prev.st_nlink != w->attr.st_nlink
2538 || w->prev.st_uid != w->attr.st_uid 3209 || prev.st_uid != w->attr.st_uid
2539 || w->prev.st_gid != w->attr.st_gid 3210 || prev.st_gid != w->attr.st_gid
2540 || w->prev.st_rdev != w->attr.st_rdev 3211 || prev.st_rdev != w->attr.st_rdev
2541 || w->prev.st_size != w->attr.st_size 3212 || prev.st_size != w->attr.st_size
2542 || w->prev.st_atime != w->attr.st_atime 3213 || prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime 3214 || prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime 3215 || prev.st_ctime != w->attr.st_ctime
2545 ) { 3216 ) {
3217 /* we only update w->prev on actual differences */
3218 /* in case we test more often than invoke the callback, */
3219 /* to ensure that prev is always different to attr */
3220 w->prev = prev;
3221
2546 #if EV_USE_INOTIFY 3222 #if EV_USE_INOTIFY
3223 if (fs_fd >= 0)
3224 {
2547 infy_del (EV_A_ w); 3225 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w); 3226 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */ 3227 ev_stat_stat (EV_A_ w); /* avoid race... */
3228 }
2550 #endif 3229 #endif
2551 3230
2552 ev_feed_event (EV_A_ w, EV_STAT); 3231 ev_feed_event (EV_A_ w, EV_STAT);
2553 } 3232 }
2554} 3233}
… …
2557ev_stat_start (EV_P_ ev_stat *w) 3236ev_stat_start (EV_P_ ev_stat *w)
2558{ 3237{
2559 if (expect_false (ev_is_active (w))) 3238 if (expect_false (ev_is_active (w)))
2560 return; 3239 return;
2561 3240
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w); 3241 ev_stat_stat (EV_A_ w);
2567 3242
3243 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568 if (w->interval < MIN_STAT_INTERVAL) 3244 w->interval = MIN_STAT_INTERVAL;
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570 3245
2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3246 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572 ev_set_priority (&w->timer, ev_priority (w)); 3247 ev_set_priority (&w->timer, ev_priority (w));
2573 3248
2574#if EV_USE_INOTIFY 3249#if EV_USE_INOTIFY
2575 infy_init (EV_A); 3250 infy_init (EV_A);
2576 3251
2577 if (fs_fd >= 0) 3252 if (fs_fd >= 0)
2578 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
2579 else 3254 else
2580#endif 3255#endif
3256 {
2581 ev_timer_start (EV_A_ &w->timer); 3257 ev_timer_again (EV_A_ &w->timer);
3258 ev_unref (EV_A);
3259 }
2582 3260
2583 ev_start (EV_A_ (W)w, 1); 3261 ev_start (EV_A_ (W)w, 1);
2584 3262
2585 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2586} 3264}
… …
2595 EV_FREQUENT_CHECK; 3273 EV_FREQUENT_CHECK;
2596 3274
2597#if EV_USE_INOTIFY 3275#if EV_USE_INOTIFY
2598 infy_del (EV_A_ w); 3276 infy_del (EV_A_ w);
2599#endif 3277#endif
3278
3279 if (ev_is_active (&w->timer))
3280 {
3281 ev_ref (EV_A);
2600 ev_timer_stop (EV_A_ &w->timer); 3282 ev_timer_stop (EV_A_ &w->timer);
3283 }
2601 3284
2602 ev_stop (EV_A_ (W)w); 3285 ev_stop (EV_A_ (W)w);
2603 3286
2604 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2605} 3288}
… …
2650 3333
2651 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2652} 3335}
2653#endif 3336#endif
2654 3337
3338#if EV_PREPARE_ENABLE
2655void 3339void
2656ev_prepare_start (EV_P_ ev_prepare *w) 3340ev_prepare_start (EV_P_ ev_prepare *w)
2657{ 3341{
2658 if (expect_false (ev_is_active (w))) 3342 if (expect_false (ev_is_active (w)))
2659 return; 3343 return;
… …
2685 3369
2686 ev_stop (EV_A_ (W)w); 3370 ev_stop (EV_A_ (W)w);
2687 3371
2688 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
2689} 3373}
3374#endif
2690 3375
3376#if EV_CHECK_ENABLE
2691void 3377void
2692ev_check_start (EV_P_ ev_check *w) 3378ev_check_start (EV_P_ ev_check *w)
2693{ 3379{
2694 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2695 return; 3381 return;
… …
2721 3407
2722 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
2723 3409
2724 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
2725} 3411}
3412#endif
2726 3413
2727#if EV_EMBED_ENABLE 3414#if EV_EMBED_ENABLE
2728void noinline 3415void noinline
2729ev_embed_sweep (EV_P_ ev_embed *w) 3416ev_embed_sweep (EV_P_ ev_embed *w)
2730{ 3417{
2731 ev_loop (w->other, EVLOOP_NONBLOCK); 3418 ev_run (w->other, EVRUN_NOWAIT);
2732} 3419}
2733 3420
2734static void 3421static void
2735embed_io_cb (EV_P_ ev_io *io, int revents) 3422embed_io_cb (EV_P_ ev_io *io, int revents)
2736{ 3423{
2737 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2738 3425
2739 if (ev_cb (w)) 3426 if (ev_cb (w))
2740 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2741 else 3428 else
2742 ev_loop (w->other, EVLOOP_NONBLOCK); 3429 ev_run (w->other, EVRUN_NOWAIT);
2743} 3430}
2744 3431
2745static void 3432static void
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{ 3434{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3435 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749 3436
2750 { 3437 {
2751 struct ev_loop *loop = w->other; 3438 EV_P = w->other;
2752 3439
2753 while (fdchangecnt) 3440 while (fdchangecnt)
2754 { 3441 {
2755 fd_reify (EV_A); 3442 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3443 ev_run (EV_A_ EVRUN_NOWAIT);
2757 } 3444 }
2758 } 3445 }
3446}
3447
3448static void
3449embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3450{
3451 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3452
3453 ev_embed_stop (EV_A_ w);
3454
3455 {
3456 EV_P = w->other;
3457
3458 ev_loop_fork (EV_A);
3459 ev_run (EV_A_ EVRUN_NOWAIT);
3460 }
3461
3462 ev_embed_start (EV_A_ w);
2759} 3463}
2760 3464
2761#if 0 3465#if 0
2762static void 3466static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3467embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2771{ 3475{
2772 if (expect_false (ev_is_active (w))) 3476 if (expect_false (ev_is_active (w)))
2773 return; 3477 return;
2774 3478
2775 { 3479 {
2776 struct ev_loop *loop = w->other; 3480 EV_P = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3481 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3482 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 } 3483 }
2780 3484
2781 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
2782 3486
… …
2785 3489
2786 ev_prepare_init (&w->prepare, embed_prepare_cb); 3490 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI); 3491 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare); 3492 ev_prepare_start (EV_A_ &w->prepare);
2789 3493
3494 ev_fork_init (&w->fork, embed_fork_cb);
3495 ev_fork_start (EV_A_ &w->fork);
3496
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3497 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791 3498
2792 ev_start (EV_A_ (W)w, 1); 3499 ev_start (EV_A_ (W)w, 1);
2793 3500
2794 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
… …
2801 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2802 return; 3509 return;
2803 3510
2804 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2805 3512
2806 ev_io_stop (EV_A_ &w->io); 3513 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare); 3514 ev_prepare_stop (EV_A_ &w->prepare);
3515 ev_fork_stop (EV_A_ &w->fork);
2808 3516
2809 ev_stop (EV_A_ (W)w); 3517 ev_stop (EV_A_ (W)w);
2810 3518
2811 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2812} 3520}
… …
2855ev_async_start (EV_P_ ev_async *w) 3563ev_async_start (EV_P_ ev_async *w)
2856{ 3564{
2857 if (expect_false (ev_is_active (w))) 3565 if (expect_false (ev_is_active (w)))
2858 return; 3566 return;
2859 3567
3568 w->sent = 0;
3569
2860 evpipe_init (EV_A); 3570 evpipe_init (EV_A);
2861 3571
2862 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2863 3573
2864 ev_start (EV_A_ (W)w, ++asynccnt); 3574 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2891 3601
2892void 3602void
2893ev_async_send (EV_P_ ev_async *w) 3603ev_async_send (EV_P_ ev_async *w)
2894{ 3604{
2895 w->sent = 1; 3605 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync); 3606 evpipe_write (EV_A_ &async_pending);
2897} 3607}
2898#endif 3608#endif
2899 3609
2900/*****************************************************************************/ 3610/*****************************************************************************/
2901 3611
… …
2911once_cb (EV_P_ struct ev_once *once, int revents) 3621once_cb (EV_P_ struct ev_once *once, int revents)
2912{ 3622{
2913 void (*cb)(int revents, void *arg) = once->cb; 3623 void (*cb)(int revents, void *arg) = once->cb;
2914 void *arg = once->arg; 3624 void *arg = once->arg;
2915 3625
2916 ev_io_stop (EV_A_ &once->io); 3626 ev_io_stop (EV_A_ &once->io);
2917 ev_timer_stop (EV_A_ &once->to); 3627 ev_timer_stop (EV_A_ &once->to);
2918 ev_free (once); 3628 ev_free (once);
2919 3629
2920 cb (revents, arg); 3630 cb (revents, arg);
2921} 3631}
2922 3632
2923static void 3633static void
2924once_cb_io (EV_P_ ev_io *w, int revents) 3634once_cb_io (EV_P_ ev_io *w, int revents)
2925{ 3635{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3636 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3637
3638 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927} 3639}
2928 3640
2929static void 3641static void
2930once_cb_to (EV_P_ ev_timer *w, int revents) 3642once_cb_to (EV_P_ ev_timer *w, int revents)
2931{ 3643{
2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3644 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3645
3646 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933} 3647}
2934 3648
2935void 3649void
2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3650ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937{ 3651{
2938 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2939 3653
2940 if (expect_false (!once)) 3654 if (expect_false (!once))
2941 { 3655 {
2942 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3656 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2943 return; 3657 return;
2944 } 3658 }
2945 3659
2946 once->cb = cb; 3660 once->cb = cb;
2947 once->arg = arg; 3661 once->arg = arg;
… …
2959 ev_timer_set (&once->to, timeout, 0.); 3673 ev_timer_set (&once->to, timeout, 0.);
2960 ev_timer_start (EV_A_ &once->to); 3674 ev_timer_start (EV_A_ &once->to);
2961 } 3675 }
2962} 3676}
2963 3677
3678/*****************************************************************************/
3679
3680#if EV_WALK_ENABLE
3681void
3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3683{
3684 int i, j;
3685 ev_watcher_list *wl, *wn;
3686
3687 if (types & (EV_IO | EV_EMBED))
3688 for (i = 0; i < anfdmax; ++i)
3689 for (wl = anfds [i].head; wl; )
3690 {
3691 wn = wl->next;
3692
3693#if EV_EMBED_ENABLE
3694 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3695 {
3696 if (types & EV_EMBED)
3697 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3698 }
3699 else
3700#endif
3701#if EV_USE_INOTIFY
3702 if (ev_cb ((ev_io *)wl) == infy_cb)
3703 ;
3704 else
3705#endif
3706 if ((ev_io *)wl != &pipe_w)
3707 if (types & EV_IO)
3708 cb (EV_A_ EV_IO, wl);
3709
3710 wl = wn;
3711 }
3712
3713 if (types & (EV_TIMER | EV_STAT))
3714 for (i = timercnt + HEAP0; i-- > HEAP0; )
3715#if EV_STAT_ENABLE
3716 /*TODO: timer is not always active*/
3717 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3718 {
3719 if (types & EV_STAT)
3720 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3721 }
3722 else
3723#endif
3724 if (types & EV_TIMER)
3725 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3726
3727#if EV_PERIODIC_ENABLE
3728 if (types & EV_PERIODIC)
3729 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3730 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3731#endif
3732
3733#if EV_IDLE_ENABLE
3734 if (types & EV_IDLE)
3735 for (j = NUMPRI; i--; )
3736 for (i = idlecnt [j]; i--; )
3737 cb (EV_A_ EV_IDLE, idles [j][i]);
3738#endif
3739
3740#if EV_FORK_ENABLE
3741 if (types & EV_FORK)
3742 for (i = forkcnt; i--; )
3743 if (ev_cb (forks [i]) != embed_fork_cb)
3744 cb (EV_A_ EV_FORK, forks [i]);
3745#endif
3746
3747#if EV_ASYNC_ENABLE
3748 if (types & EV_ASYNC)
3749 for (i = asynccnt; i--; )
3750 cb (EV_A_ EV_ASYNC, asyncs [i]);
3751#endif
3752
3753#if EV_PREPARE_ENABLE
3754 if (types & EV_PREPARE)
3755 for (i = preparecnt; i--; )
3756# if EV_EMBED_ENABLE
3757 if (ev_cb (prepares [i]) != embed_prepare_cb)
3758# endif
3759 cb (EV_A_ EV_PREPARE, prepares [i]);
3760#endif
3761
3762#if EV_CHECK_ENABLE
3763 if (types & EV_CHECK)
3764 for (i = checkcnt; i--; )
3765 cb (EV_A_ EV_CHECK, checks [i]);
3766#endif
3767
3768#if EV_SIGNAL_ENABLE
3769 if (types & EV_SIGNAL)
3770 for (i = 0; i < EV_NSIG - 1; ++i)
3771 for (wl = signals [i].head; wl; )
3772 {
3773 wn = wl->next;
3774 cb (EV_A_ EV_SIGNAL, wl);
3775 wl = wn;
3776 }
3777#endif
3778
3779#if EV_CHILD_ENABLE
3780 if (types & EV_CHILD)
3781 for (i = (EV_PID_HASHSIZE); i--; )
3782 for (wl = childs [i]; wl; )
3783 {
3784 wn = wl->next;
3785 cb (EV_A_ EV_CHILD, wl);
3786 wl = wn;
3787 }
3788#endif
3789/* EV_STAT 0x00001000 /* stat data changed */
3790/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3791}
3792#endif
3793
2964#if EV_MULTIPLICITY 3794#if EV_MULTIPLICITY
2965 #include "ev_wrap.h" 3795 #include "ev_wrap.h"
2966#endif 3796#endif
2967 3797
2968#ifdef __cplusplus 3798EV_CPP(})
2969}
2970#endif
2971 3799

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