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Comparing libev/ev.c (file contents):
Revision 1.284 by root, Wed Apr 15 17:49:26 2009 UTC vs.
Revision 1.358 by root, Sun Oct 24 14:44:40 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
… …
57# endif 53# endif
58# ifndef EV_USE_MONOTONIC 54# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 55# define EV_USE_MONOTONIC 1
60# endif 56# endif
61# endif 57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
62# endif 60# endif
63 61
64# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
77# endif 75# endif
78# endif 76# endif
79 77
78# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
83# else 82# else
83# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
86# endif 94# endif
87 95
96# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 99# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 100# else
101# undef EV_USE_POLL
100# define EV_USE_POLL 0 102# define EV_USE_POLL 0
101# endif
102# endif 103# endif
103 104
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
107# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
110# endif 112# endif
111 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
118# endif 121# endif
119 122
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
123# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
126# endif 130# endif
127 131
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
134# endif 139# endif
135 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
142# endif 157# endif
143 158
144#endif 159#endif
145 160
146#include <math.h> 161#include <math.h>
147#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
148#include <fcntl.h> 164#include <fcntl.h>
149#include <stddef.h> 165#include <stddef.h>
150 166
151#include <stdio.h> 167#include <stdio.h>
152 168
153#include <assert.h> 169#include <assert.h>
154#include <errno.h> 170#include <errno.h>
155#include <sys/types.h> 171#include <sys/types.h>
156#include <time.h> 172#include <time.h>
173#include <limits.h>
157 174
158#include <signal.h> 175#include <signal.h>
159 176
160#ifdef EV_H 177#ifdef EV_H
161# include EV_H 178# include EV_H
162#else 179#else
163# include "ev.h" 180# include "ev.h"
164#endif 181#endif
182
183EV_CPP(extern "C" {)
165 184
166#ifndef _WIN32 185#ifndef _WIN32
167# include <sys/time.h> 186# include <sys/time.h>
168# include <sys/wait.h> 187# include <sys/wait.h>
169# include <unistd.h> 188# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 192# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
176# endif 195# endif
196# undef EV_AVOID_STDIO
177#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
178 206
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
180 236
181#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 240# else
185# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
186# endif 242# endif
187#endif 243#endif
188 244
189#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 248# else
193# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
194# endif 250# endif
195#endif 251#endif
196 252
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 255#endif
200 256
201#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 260# else
205# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
206# endif 262# endif
207#endif 263#endif
208 264
209#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 267#endif
212 268
213#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
214# ifdef _WIN32 270# ifdef _WIN32
215# define EV_USE_POLL 0 271# define EV_USE_POLL 0
216# else 272# else
217# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 274# endif
219#endif 275#endif
220 276
221#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 280# else
225# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
226# endif 282# endif
227#endif 283#endif
228 284
… …
234# define EV_USE_PORT 0 290# define EV_USE_PORT 0
235#endif 291#endif
236 292
237#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 296# else
241# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
242# endif 298# endif
243#endif 299#endif
244 300
245#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 303#endif
252 304
253#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 307#endif
260 308
261#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 312# else
265# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
266# endif 322# endif
267#endif 323#endif
268 324
269#if 0 /* debugging */ 325#if 0 /* debugging */
270# define EV_VERIFY 3 326# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
273#endif 329#endif
274 330
275#ifndef EV_VERIFY 331#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 333#endif
278 334
279#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 337#endif
282 338
283#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
285#endif 355#endif
286 356
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
288 364
289#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
292#endif 368#endif
… …
306# include <sys/select.h> 382# include <sys/select.h>
307# endif 383# endif
308#endif 384#endif
309 385
310#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 387# include <sys/statfs.h>
313# include <sys/inotify.h> 388# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
… …
320 395
321#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 397# include <winsock.h>
323#endif 398#endif
324 399
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 402# include <stdint.h>
337# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
338extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
339# endif 405# endif
340int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 407# ifdef O_CLOEXEC
342} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
343# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
344#endif 436#endif
345 437
346/**/ 438/**/
347 439
348#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 442#else
351# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
352#endif 444#endif
353 445
354/* 446/*
… …
361 */ 453 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363 455
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
367 461
368#if __GNUC__ >= 4 462#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
371#else 465#else
… …
378 472
379#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 475#define inline_size static inline
382 476
383#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
384# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
385#else 487#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
391 490
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
394 493
395typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
401 500
402#if EV_USE_REALTIME 501#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 503/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 505#endif
407 506
408#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 509#endif
411 510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
519#endif
520
412#ifdef _WIN32 521#ifdef _WIN32
413# include "ev_win32.c" 522# include "ev_win32.c"
414#endif 523#endif
415 524
416/*****************************************************************************/ 525/*****************************************************************************/
526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
417 576
418static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
419 578
420void 579void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
… …
431 590
432 if (syserr_cb) 591 if (syserr_cb)
433 syserr_cb (msg); 592 syserr_cb (msg);
434 else 593 else
435 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
436 perror (msg); 603 perror (msg);
604#endif
437 abort (); 605 abort ();
438 } 606 }
439} 607}
440 608
441static void * 609static void *
442ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
443{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
444 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
447 */ 618 */
448 619
449 if (size) 620 if (size)
450 return realloc (ptr, size); 621 return realloc (ptr, size);
451 622
452 free (ptr); 623 free (ptr);
453 return 0; 624 return 0;
625#endif
454} 626}
455 627
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 629
458void 630void
… …
466{ 638{
467 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
468 640
469 if (!ptr && size) 641 if (!ptr && size)
470 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
472 abort (); 648 abort ();
473 } 649 }
474 650
475 return ptr; 651 return ptr;
476} 652}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
480 656
481/*****************************************************************************/ 657/*****************************************************************************/
482 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
483typedef struct 663typedef struct
484{ 664{
485 WL head; 665 WL head;
486 unsigned char events; 666 unsigned char events; /* the events watched for */
487 unsigned char reify; 667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 669 unsigned char unused;
490#if EV_USE_EPOLL 670#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 671 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 672#endif
493#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 674 SOCKET handle;
495#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
496} ANFD; 679} ANFD;
497 680
681/* stores the pending event set for a given watcher */
498typedef struct 682typedef struct
499{ 683{
500 W w; 684 W w;
501 int events; 685 int events; /* the pending event set for the given watcher */
502} ANPENDING; 686} ANPENDING;
503 687
504#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
506typedef struct 690typedef struct
… …
509} ANFS; 693} ANFS;
510#endif 694#endif
511 695
512/* Heap Entry */ 696/* Heap Entry */
513#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
514 typedef struct { 699 typedef struct {
515 ev_tstamp at; 700 ev_tstamp at;
516 WT w; 701 WT w;
517 } ANHE; 702 } ANHE;
518 703
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 707#else
708 /* a heap element */
523 typedef WT ANHE; 709 typedef WT ANHE;
524 710
525 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
551 737
552 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
553 739
554#endif 740#endif
555 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
556/*****************************************************************************/ 754/*****************************************************************************/
557 755
756#ifndef EV_HAVE_EV_TIME
558ev_tstamp 757ev_tstamp
559ev_time (void) 758ev_time (void)
560{ 759{
561#if EV_USE_REALTIME 760#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 761 if (expect_true (have_realtime))
… …
569 768
570 struct timeval tv; 769 struct timeval tv;
571 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 772}
773#endif
574 774
575inline_size ev_tstamp 775inline_size ev_tstamp
576get_clock (void) 776get_clock (void)
577{ 777{
578#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 801 if (delay > 0.)
602 { 802 {
603#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
604 struct timespec ts; 804 struct timespec ts;
605 805
606 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
610#elif defined(_WIN32) 808#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
612#else 810#else
613 struct timeval tv; 811 struct timeval tv;
614 812
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
622#endif 818#endif
623 } 819 }
624} 820}
625 821
626/*****************************************************************************/ 822/*****************************************************************************/
627 823
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 825
826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 828inline_size int
631array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
632{ 830{
633 int ncur = cur + 1; 831 int ncur = cur + 1;
634 832
… …
680#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 880
683/*****************************************************************************/ 881/*****************************************************************************/
684 882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
888
685void noinline 889void noinline
686ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
687{ 891{
688 W w_ = (W)w; 892 W w_ = (W)w;
689 int pri = ABSPRI (w_); 893 int pri = ABSPRI (w_);
… …
724} 928}
725 929
726/*****************************************************************************/ 930/*****************************************************************************/
727 931
728inline_speed void 932inline_speed void
729fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
730{ 934{
731 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
732 ev_io *w; 936 ev_io *w;
733 937
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 942 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
740 } 944 }
741} 945}
742 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
743void 958void
744ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 960{
746 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
748} 963}
749 964
965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
750inline_size void 967inline_size void
751fd_reify (EV_P) 968fd_reify (EV_P)
752{ 969{
753 int i; 970 int i;
754 971
… …
756 { 973 {
757 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
759 ev_io *w; 976 ev_io *w;
760 977
761 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
762 980
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 982
766#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
767 if (events) 984 if (o_reify & EV__IOFDSET)
768 { 985 {
769 unsigned long arg; 986 unsigned long arg;
770 #ifdef EV_FD_TO_WIN32_HANDLE
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
772 #else
773 anfd->handle = _get_osfhandle (fd);
774 #endif
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
776 } 990 }
777#endif 991#endif
778 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
779 { 994 {
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events; 995 anfd->events = 0;
785 996
786 if (o_events != events || o_reify & EV__IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1006 }
790 1007
791 fdchangecnt = 0; 1008 fdchangecnt = 0;
792} 1009}
793 1010
1011/* something about the given fd changed */
794inline_size void 1012inline_size void
795fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
796{ 1014{
797 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
805 } 1023 }
806} 1024}
807 1025
1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1027inline_speed void
809fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
810{ 1029{
811 ev_io *w; 1030 ev_io *w;
812 1031
… …
815 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1036 }
818} 1037}
819 1038
1039/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1040inline_size int
821fd_valid (int fd) 1041fd_valid (int fd)
822{ 1042{
823#ifdef _WIN32 1043#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1045#else
826 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
827#endif 1047#endif
828} 1048}
829 1049
… …
847 1067
848 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1069 if (anfds [fd].events)
850 { 1070 {
851 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
852 return; 1072 break;
853 } 1073 }
854} 1074}
855 1075
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1077static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1083 if (anfds [fd].events)
864 { 1084 {
865 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1086 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1088 }
869} 1089}
870 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
871/*****************************************************************************/ 1105/*****************************************************************************/
872 1106
873/* 1107/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
877 */ 1111 */
878 1112
879/* 1113/*
… …
947 1181
948 for (;;) 1182 for (;;)
949 { 1183 {
950 int c = k << 1; 1184 int c = k << 1;
951 1185
952 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
953 break; 1187 break;
954 1188
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1190 ? 1 : 0;
957 1191
… …
989 1223
990 heap [k] = he; 1224 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
992} 1226}
993 1227
1228/* move an element suitably so it is in a correct place */
994inline_size void 1229inline_size void
995adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
996{ 1231{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1233 upheap (heap, k);
999 else 1234 else
1000 downheap (heap, N, k); 1235 downheap (heap, N, k);
1001} 1236}
1002 1237
… …
1012 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
1013} 1248}
1014 1249
1015/*****************************************************************************/ 1250/*****************************************************************************/
1016 1251
1252/* associate signal watchers to a signal signal */
1017typedef struct 1253typedef struct
1018{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
1019 WL head; 1259 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1260} ANSIG;
1022 1261
1023static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1263
1028/*****************************************************************************/ 1264/*****************************************************************************/
1029 1265
1030inline_speed void 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1267
1042static void noinline 1268static void noinline
1043evpipe_init (EV_P) 1269evpipe_init (EV_P)
1044{ 1270{
1045 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
1046 { 1272 {
1047#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1049 { 1279 {
1050 evpipe [0] = -1; 1280 evpipe [0] = -1;
1051 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1283 }
1054 else 1284 else
1055#endif 1285# endif
1056 { 1286 {
1057 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1059 1289
1060 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1293 }
1064 1294
1065 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1297 }
1068} 1298}
1069 1299
1070inline_size void 1300inline_size void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1302{
1073 if (!*flag) 1303 if (!*flag)
1074 { 1304 {
1075 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1076 1307
1077 *flag = 1; 1308 *flag = 1;
1078 1309
1079#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1082 uint64_t counter = 1; 1313 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1084 } 1315 }
1085 else 1316 else
1086#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1088 1324
1089 errno = old_errno; 1325 errno = old_errno;
1090 } 1326 }
1091} 1327}
1092 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1093static void 1331static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1333{
1334 int i;
1335
1096#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1337 if (evfd >= 0)
1098 { 1338 {
1099 uint64_t counter; 1339 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1101 } 1341 }
1102 else 1342 else
1103#endif 1343#endif
1104 { 1344 {
1105 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1107 } 1348 }
1108 1349
1109 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1110 { 1351 {
1111 int signum; 1352 sig_pending = 0;
1112 gotsig = 0;
1113 1353
1114 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1357 }
1118 1358
1119#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1120 if (gotasync) 1360 if (async_pending)
1121 { 1361 {
1122 int i; 1362 async_pending = 0;
1123 gotasync = 0;
1124 1363
1125 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1127 { 1366 {
1128 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1136 1375
1137static void 1376static void
1138ev_sighandler (int signum) 1377ev_sighandler (int signum)
1139{ 1378{
1140#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1142#endif 1381#endif
1143 1382
1144#if _WIN32 1383#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1146#endif 1385#endif
1147 1386
1148 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1149 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1150} 1389}
1151 1390
1152void noinline 1391void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1154{ 1393{
1155 WL w; 1394 WL w;
1156 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1157#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1404
1161 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1406 return;
1407#endif
1165 1408
1166 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1167 1410
1168 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1413}
1171 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1172/*****************************************************************************/ 1437/*****************************************************************************/
1173 1438
1439#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1441
1178static ev_signal childev; 1442static ev_signal childev;
1179 1443
1180#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1182#endif 1446#endif
1183 1447
1448/* handle a single child status event */
1184inline_speed void 1449inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1186{ 1451{
1187 ev_child *w; 1452 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1454
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1456 {
1192 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1194 { 1459 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1467
1203#ifndef WCONTINUED 1468#ifndef WCONTINUED
1204# define WCONTINUED 0 1469# define WCONTINUED 0
1205#endif 1470#endif
1206 1471
1472/* called on sigchld etc., calls waitpid */
1207static void 1473static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1475{
1210 int pid, status; 1476 int pid, status;
1211 1477
… …
1219 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1488
1223 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1492}
1227 1493
1228#endif 1494#endif
1229 1495
1230/*****************************************************************************/ 1496/*****************************************************************************/
1231 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1232#if EV_USE_PORT 1501#if EV_USE_PORT
1233# include "ev_port.c" 1502# include "ev_port.c"
1234#endif 1503#endif
1235#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1296#ifdef __APPLE__ 1565#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1566 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1572#endif
1301 1573
1302 return flags; 1574 return flags;
1303} 1575}
1304 1576
1305unsigned int 1577unsigned int
1306ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1307{ 1579{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 1581
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1313 1585
1314 return flags; 1586 return flags;
1315} 1587}
1316 1588
1317unsigned int 1589unsigned int
1318ev_backend (EV_P) 1590ev_backend (EV_P)
1319{ 1591{
1320 return backend; 1592 return backend;
1321} 1593}
1322 1594
1595#if EV_FEATURE_API
1323unsigned int 1596unsigned int
1324ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1325{ 1598{
1326 return loop_count; 1599 return loop_count;
1327} 1600}
1328 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1329void 1608void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1610{
1332 io_blocktime = interval; 1611 io_blocktime = interval;
1333} 1612}
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1616{
1338 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1339} 1618}
1340 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1645static void noinline
1342loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1343{ 1647{
1344 if (!backend) 1648 if (!backend)
1345 { 1649 {
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1666 have_monotonic = 1;
1363 } 1667 }
1364#endif 1668#endif
1365 1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1680
1366 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1367 mn_now = get_clock (); 1682 mn_now = get_clock ();
1368 now_floor = mn_now; 1683 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1370 1688
1371 io_blocktime = 0.; 1689 io_blocktime = 0.;
1372 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1373 backend = 0; 1691 backend = 0;
1374 backend_fd = -1; 1692 backend_fd = -1;
1375 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1376#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1377 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378#endif 1699#endif
1379 1700#if EV_USE_SIGNALFD
1380 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid ();
1384#endif 1702#endif
1385
1386 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 1703
1391 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1392 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1393 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1394#if EV_USE_PORT 1710#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 1712#endif
1397#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 1721#endif
1406#if EV_USE_SELECT 1722#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1724#endif
1409 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1412 } 1732 }
1413} 1733}
1414 1734
1735/* free up a loop structure */
1415static void noinline 1736static void noinline
1416loop_destroy (EV_P) 1737loop_destroy (EV_P)
1417{ 1738{
1418 int i; 1739 int i;
1419 1740
1420 if (ev_is_active (&pipeev)) 1741 if (ev_is_active (&pipe_w))
1421 { 1742 {
1422 ev_ref (EV_A); /* signal watcher */ 1743 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1744 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1745
1425#if EV_USE_EVENTFD 1746#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1747 if (evfd >= 0)
1427 close (evfd); 1748 close (evfd);
1428#endif 1749#endif
1429 1750
1430 if (evpipe [0] >= 0) 1751 if (evpipe [0] >= 0)
1431 { 1752 {
1432 close (evpipe [0]); 1753 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1754 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1755 }
1435 } 1756 }
1757
1758#if EV_USE_SIGNALFD
1759 if (ev_is_active (&sigfd_w))
1760 close (sigfd);
1761#endif
1436 1762
1437#if EV_USE_INOTIFY 1763#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1764 if (fs_fd >= 0)
1439 close (fs_fd); 1765 close (fs_fd);
1440#endif 1766#endif
1441 1767
1442 if (backend_fd >= 0) 1768 if (backend_fd >= 0)
1443 close (backend_fd); 1769 close (backend_fd);
1444 1770
1771#if EV_USE_IOCP
1772 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1773#endif
1445#if EV_USE_PORT 1774#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1775 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 1776#endif
1448#if EV_USE_KQUEUE 1777#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1778 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 1793#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 1794 array_free (idle, [i]);
1466#endif 1795#endif
1467 } 1796 }
1468 1797
1469 ev_free (anfds); anfdmax = 0; 1798 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 1799
1471 /* have to use the microsoft-never-gets-it-right macro */ 1800 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 1801 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 1802 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 1803 array_free (timer, EMPTY);
… …
1505#endif 1834#endif
1506#if EV_USE_INOTIFY 1835#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 1836 infy_fork (EV_A);
1508#endif 1837#endif
1509 1838
1510 if (ev_is_active (&pipeev)) 1839 if (ev_is_active (&pipe_w))
1511 { 1840 {
1512 /* this "locks" the handlers against writing to the pipe */ 1841 /* this "locks" the handlers against writing to the pipe */
1513 /* while we modify the fd vars */ 1842 /* while we modify the fd vars */
1514 gotsig = 1; 1843 sig_pending = 1;
1515#if EV_ASYNC_ENABLE 1844#if EV_ASYNC_ENABLE
1516 gotasync = 1; 1845 async_pending = 1;
1517#endif 1846#endif
1518 1847
1519 ev_ref (EV_A); 1848 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 1849 ev_io_stop (EV_A_ &pipe_w);
1521 1850
1522#if EV_USE_EVENTFD 1851#if EV_USE_EVENTFD
1523 if (evfd >= 0) 1852 if (evfd >= 0)
1524 close (evfd); 1853 close (evfd);
1525#endif 1854#endif
1526 1855
1527 if (evpipe [0] >= 0) 1856 if (evpipe [0] >= 0)
1528 { 1857 {
1529 close (evpipe [0]); 1858 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 1859 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 1860 }
1532 1861
1862#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 1863 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 1864 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 1865 pipecb (EV_A_ &pipe_w, EV_READ);
1866#endif
1536 } 1867 }
1537 1868
1538 postfork = 0; 1869 postfork = 0;
1539} 1870}
1540 1871
1541#if EV_MULTIPLICITY 1872#if EV_MULTIPLICITY
1542 1873
1543struct ev_loop * 1874struct ev_loop *
1544ev_loop_new (unsigned int flags) 1875ev_loop_new (unsigned int flags)
1545{ 1876{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1877 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 1878
1548 memset (loop, 0, sizeof (struct ev_loop)); 1879 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 1880 loop_init (EV_A_ flags);
1551 1881
1552 if (ev_backend (EV_A)) 1882 if (ev_backend (EV_A))
1553 return loop; 1883 return EV_A;
1554 1884
1555 return 0; 1885 return 0;
1556} 1886}
1557 1887
1558void 1888void
… …
1565void 1895void
1566ev_loop_fork (EV_P) 1896ev_loop_fork (EV_P)
1567{ 1897{
1568 postfork = 1; /* must be in line with ev_default_fork */ 1898 postfork = 1; /* must be in line with ev_default_fork */
1569} 1899}
1900#endif /* multiplicity */
1570 1901
1571#if EV_VERIFY 1902#if EV_VERIFY
1572static void noinline 1903static void noinline
1573verify_watcher (EV_P_ W w) 1904verify_watcher (EV_P_ W w)
1574{ 1905{
… …
1602 verify_watcher (EV_A_ ws [cnt]); 1933 verify_watcher (EV_A_ ws [cnt]);
1603 } 1934 }
1604} 1935}
1605#endif 1936#endif
1606 1937
1938#if EV_FEATURE_API
1607void 1939void
1608ev_loop_verify (EV_P) 1940ev_verify (EV_P)
1609{ 1941{
1610#if EV_VERIFY 1942#if EV_VERIFY
1611 int i; 1943 int i;
1612 WL w; 1944 WL w;
1613 1945
… …
1652#if EV_ASYNC_ENABLE 1984#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 1985 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 1986 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 1987#endif
1656 1988
1989#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 1990 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 1991 array_verify (EV_A_ (W *)prepares, preparecnt);
1992#endif
1659 1993
1994#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 1995 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 1996 array_verify (EV_A_ (W *)checks, checkcnt);
1997#endif
1662 1998
1663# if 0 1999# if 0
2000#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2001 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2002 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2003#endif
1666# endif 2004# endif
1667#endif 2005#endif
1668} 2006}
1669 2007#endif
1670#endif /* multiplicity */
1671 2008
1672#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1673struct ev_loop * 2010struct ev_loop *
1674ev_default_loop_init (unsigned int flags)
1675#else 2011#else
1676int 2012int
2013#endif
1677ev_default_loop (unsigned int flags) 2014ev_default_loop (unsigned int flags)
1678#endif
1679{ 2015{
1680 if (!ev_default_loop_ptr) 2016 if (!ev_default_loop_ptr)
1681 { 2017 {
1682#if EV_MULTIPLICITY 2018#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2019 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2020#else
1685 ev_default_loop_ptr = 1; 2021 ev_default_loop_ptr = 1;
1686#endif 2022#endif
1687 2023
1688 loop_init (EV_A_ flags); 2024 loop_init (EV_A_ flags);
1689 2025
1690 if (ev_backend (EV_A)) 2026 if (ev_backend (EV_A))
1691 { 2027 {
1692#ifndef _WIN32 2028#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2029 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2030 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2031 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2032 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2033#endif
… …
1705 2041
1706void 2042void
1707ev_default_destroy (void) 2043ev_default_destroy (void)
1708{ 2044{
1709#if EV_MULTIPLICITY 2045#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr; 2046 EV_P = ev_default_loop_ptr;
1711#endif 2047#endif
1712 2048
1713 ev_default_loop_ptr = 0; 2049 ev_default_loop_ptr = 0;
1714 2050
1715#ifndef _WIN32 2051#if EV_CHILD_ENABLE
1716 ev_ref (EV_A); /* child watcher */ 2052 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev); 2053 ev_signal_stop (EV_A_ &childev);
1718#endif 2054#endif
1719 2055
1720 loop_destroy (EV_A); 2056 loop_destroy (EV_A);
… …
1722 2058
1723void 2059void
1724ev_default_fork (void) 2060ev_default_fork (void)
1725{ 2061{
1726#if EV_MULTIPLICITY 2062#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr; 2063 EV_P = ev_default_loop_ptr;
1728#endif 2064#endif
1729 2065
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2066 postfork = 1; /* must be in line with ev_loop_fork */
1731} 2067}
1732 2068
… …
1736ev_invoke (EV_P_ void *w, int revents) 2072ev_invoke (EV_P_ void *w, int revents)
1737{ 2073{
1738 EV_CB_INVOKE ((W)w, revents); 2074 EV_CB_INVOKE ((W)w, revents);
1739} 2075}
1740 2076
1741inline_speed void 2077unsigned int
1742call_pending (EV_P) 2078ev_pending_count (EV_P)
2079{
2080 int pri;
2081 unsigned int count = 0;
2082
2083 for (pri = NUMPRI; pri--; )
2084 count += pendingcnt [pri];
2085
2086 return count;
2087}
2088
2089void noinline
2090ev_invoke_pending (EV_P)
1743{ 2091{
1744 int pri; 2092 int pri;
1745 2093
1746 for (pri = NUMPRI; pri--; ) 2094 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2095 while (pendingcnt [pri])
1748 { 2096 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2097 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2098
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 2099 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2100 /* ^ this is no longer true, as pending_w could be here */
1754 2101
1755 p->w->pending = 0; 2102 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2103 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2104 EV_FREQUENT_CHECK;
1758 }
1759 } 2105 }
1760} 2106}
1761 2107
1762#if EV_IDLE_ENABLE 2108#if EV_IDLE_ENABLE
2109/* make idle watchers pending. this handles the "call-idle */
2110/* only when higher priorities are idle" logic */
1763inline_size void 2111inline_size void
1764idle_reify (EV_P) 2112idle_reify (EV_P)
1765{ 2113{
1766 if (expect_false (idleall)) 2114 if (expect_false (idleall))
1767 { 2115 {
… …
1780 } 2128 }
1781 } 2129 }
1782} 2130}
1783#endif 2131#endif
1784 2132
2133/* make timers pending */
1785inline_size void 2134inline_size void
1786timers_reify (EV_P) 2135timers_reify (EV_P)
1787{ 2136{
1788 EV_FREQUENT_CHECK; 2137 EV_FREQUENT_CHECK;
1789 2138
… …
1813 EV_FREQUENT_CHECK; 2162 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2163 feed_reverse (EV_A_ (W)w);
1815 } 2164 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2165 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2166
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2167 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2168 }
1820} 2169}
1821 2170
1822#if EV_PERIODIC_ENABLE 2171#if EV_PERIODIC_ENABLE
2172/* make periodics pending */
1823inline_size void 2173inline_size void
1824periodics_reify (EV_P) 2174periodics_reify (EV_P)
1825{ 2175{
1826 EV_FREQUENT_CHECK; 2176 EV_FREQUENT_CHECK;
1827 2177
… …
1874 2224
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2225 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2226 }
1877} 2227}
1878 2228
2229/* simply recalculate all periodics */
2230/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2231static void noinline
1880periodics_reschedule (EV_P) 2232periodics_reschedule (EV_P)
1881{ 2233{
1882 int i; 2234 int i;
1883 2235
… …
1896 2248
1897 reheap (periodics, periodiccnt); 2249 reheap (periodics, periodiccnt);
1898} 2250}
1899#endif 2251#endif
1900 2252
2253/* adjust all timers by a given offset */
2254static void noinline
2255timers_reschedule (EV_P_ ev_tstamp adjust)
2256{
2257 int i;
2258
2259 for (i = 0; i < timercnt; ++i)
2260 {
2261 ANHE *he = timers + i + HEAP0;
2262 ANHE_w (*he)->at += adjust;
2263 ANHE_at_cache (*he);
2264 }
2265}
2266
2267/* fetch new monotonic and realtime times from the kernel */
2268/* also detect if there was a timejump, and act accordingly */
1901inline_speed void 2269inline_speed void
1902time_update (EV_P_ ev_tstamp max_block) 2270time_update (EV_P_ ev_tstamp max_block)
1903{ 2271{
1904 int i;
1905
1906#if EV_USE_MONOTONIC 2272#if EV_USE_MONOTONIC
1907 if (expect_true (have_monotonic)) 2273 if (expect_true (have_monotonic))
1908 { 2274 {
2275 int i;
1909 ev_tstamp odiff = rtmn_diff; 2276 ev_tstamp odiff = rtmn_diff;
1910 2277
1911 mn_now = get_clock (); 2278 mn_now = get_clock ();
1912 2279
1913 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2280 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1939 ev_rt_now = ev_time (); 2306 ev_rt_now = ev_time ();
1940 mn_now = get_clock (); 2307 mn_now = get_clock ();
1941 now_floor = mn_now; 2308 now_floor = mn_now;
1942 } 2309 }
1943 2310
2311 /* no timer adjustment, as the monotonic clock doesn't jump */
2312 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1944# if EV_PERIODIC_ENABLE 2313# if EV_PERIODIC_ENABLE
1945 periodics_reschedule (EV_A); 2314 periodics_reschedule (EV_A);
1946# endif 2315# endif
1947 /* no timer adjustment, as the monotonic clock doesn't jump */
1948 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1949 } 2316 }
1950 else 2317 else
1951#endif 2318#endif
1952 { 2319 {
1953 ev_rt_now = ev_time (); 2320 ev_rt_now = ev_time ();
1954 2321
1955 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2322 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1956 { 2323 {
2324 /* adjust timers. this is easy, as the offset is the same for all of them */
2325 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1957#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
1958 periodics_reschedule (EV_A); 2327 periodics_reschedule (EV_A);
1959#endif 2328#endif
1960 /* adjust timers. this is easy, as the offset is the same for all of them */
1961 for (i = 0; i < timercnt; ++i)
1962 {
1963 ANHE *he = timers + i + HEAP0;
1964 ANHE_w (*he)->at += ev_rt_now - mn_now;
1965 ANHE_at_cache (*he);
1966 }
1967 } 2329 }
1968 2330
1969 mn_now = ev_rt_now; 2331 mn_now = ev_rt_now;
1970 } 2332 }
1971} 2333}
1972 2334
1973void 2335void
1974ev_ref (EV_P)
1975{
1976 ++activecnt;
1977}
1978
1979void
1980ev_unref (EV_P)
1981{
1982 --activecnt;
1983}
1984
1985void
1986ev_now_update (EV_P)
1987{
1988 time_update (EV_A_ 1e100);
1989}
1990
1991static int loop_done;
1992
1993void
1994ev_loop (EV_P_ int flags) 2336ev_run (EV_P_ int flags)
1995{ 2337{
2338#if EV_FEATURE_API
2339 ++loop_depth;
2340#endif
2341
2342 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2343
1996 loop_done = EVUNLOOP_CANCEL; 2344 loop_done = EVBREAK_CANCEL;
1997 2345
1998 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2346 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1999 2347
2000 do 2348 do
2001 { 2349 {
2002#if EV_VERIFY >= 2 2350#if EV_VERIFY >= 2
2003 ev_loop_verify (EV_A); 2351 ev_verify (EV_A);
2004#endif 2352#endif
2005 2353
2006#ifndef _WIN32 2354#ifndef _WIN32
2007 if (expect_false (curpid)) /* penalise the forking check even more */ 2355 if (expect_false (curpid)) /* penalise the forking check even more */
2008 if (expect_false (getpid () != curpid)) 2356 if (expect_false (getpid () != curpid))
… …
2016 /* we might have forked, so queue fork handlers */ 2364 /* we might have forked, so queue fork handlers */
2017 if (expect_false (postfork)) 2365 if (expect_false (postfork))
2018 if (forkcnt) 2366 if (forkcnt)
2019 { 2367 {
2020 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2368 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2021 call_pending (EV_A); 2369 EV_INVOKE_PENDING;
2022 } 2370 }
2023#endif 2371#endif
2024 2372
2373#if EV_PREPARE_ENABLE
2025 /* queue prepare watchers (and execute them) */ 2374 /* queue prepare watchers (and execute them) */
2026 if (expect_false (preparecnt)) 2375 if (expect_false (preparecnt))
2027 { 2376 {
2028 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2377 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2029 call_pending (EV_A); 2378 EV_INVOKE_PENDING;
2030 } 2379 }
2380#endif
2381
2382 if (expect_false (loop_done))
2383 break;
2031 2384
2032 /* we might have forked, so reify kernel state if necessary */ 2385 /* we might have forked, so reify kernel state if necessary */
2033 if (expect_false (postfork)) 2386 if (expect_false (postfork))
2034 loop_fork (EV_A); 2387 loop_fork (EV_A);
2035 2388
… …
2039 /* calculate blocking time */ 2392 /* calculate blocking time */
2040 { 2393 {
2041 ev_tstamp waittime = 0.; 2394 ev_tstamp waittime = 0.;
2042 ev_tstamp sleeptime = 0.; 2395 ev_tstamp sleeptime = 0.;
2043 2396
2397 /* remember old timestamp for io_blocktime calculation */
2398 ev_tstamp prev_mn_now = mn_now;
2399
2400 /* update time to cancel out callback processing overhead */
2401 time_update (EV_A_ 1e100);
2402
2044 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2403 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2045 { 2404 {
2046 /* update time to cancel out callback processing overhead */ 2405 waittime = MAX_BLOCKTIME;
2047 time_update (EV_A_ 1e100);
2048 2406
2049 if (timercnt) 2407 if (timercnt)
2050 { 2408 {
2051 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2052 if (waittime > to) waittime = to; 2410 if (waittime > to) waittime = to;
… …
2058 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2416 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2059 if (waittime > to) waittime = to; 2417 if (waittime > to) waittime = to;
2060 } 2418 }
2061#endif 2419#endif
2062 2420
2421 /* don't let timeouts decrease the waittime below timeout_blocktime */
2063 if (expect_false (waittime < timeout_blocktime)) 2422 if (expect_false (waittime < timeout_blocktime))
2064 waittime = timeout_blocktime; 2423 waittime = timeout_blocktime;
2065 2424
2066 sleeptime = waittime - backend_fudge; 2425 /* extra check because io_blocktime is commonly 0 */
2067
2068 if (expect_true (sleeptime > io_blocktime)) 2426 if (expect_false (io_blocktime))
2069 sleeptime = io_blocktime;
2070
2071 if (sleeptime)
2072 { 2427 {
2428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2429
2430 if (sleeptime > waittime - backend_fudge)
2431 sleeptime = waittime - backend_fudge;
2432
2433 if (expect_true (sleeptime > 0.))
2434 {
2073 ev_sleep (sleeptime); 2435 ev_sleep (sleeptime);
2074 waittime -= sleeptime; 2436 waittime -= sleeptime;
2437 }
2075 } 2438 }
2076 } 2439 }
2077 2440
2441#if EV_FEATURE_API
2078 ++loop_count; 2442 ++loop_count;
2443#endif
2444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2079 backend_poll (EV_A_ waittime); 2445 backend_poll (EV_A_ waittime);
2446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2080 2447
2081 /* update ev_rt_now, do magic */ 2448 /* update ev_rt_now, do magic */
2082 time_update (EV_A_ waittime + sleeptime); 2449 time_update (EV_A_ waittime + sleeptime);
2083 } 2450 }
2084 2451
… …
2091#if EV_IDLE_ENABLE 2458#if EV_IDLE_ENABLE
2092 /* queue idle watchers unless other events are pending */ 2459 /* queue idle watchers unless other events are pending */
2093 idle_reify (EV_A); 2460 idle_reify (EV_A);
2094#endif 2461#endif
2095 2462
2463#if EV_CHECK_ENABLE
2096 /* queue check watchers, to be executed first */ 2464 /* queue check watchers, to be executed first */
2097 if (expect_false (checkcnt)) 2465 if (expect_false (checkcnt))
2098 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2466 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2467#endif
2099 2468
2100 call_pending (EV_A); 2469 EV_INVOKE_PENDING;
2101 } 2470 }
2102 while (expect_true ( 2471 while (expect_true (
2103 activecnt 2472 activecnt
2104 && !loop_done 2473 && !loop_done
2105 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2474 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2106 )); 2475 ));
2107 2476
2108 if (loop_done == EVUNLOOP_ONE) 2477 if (loop_done == EVBREAK_ONE)
2109 loop_done = EVUNLOOP_CANCEL; 2478 loop_done = EVBREAK_CANCEL;
2110}
2111 2479
2480#if EV_FEATURE_API
2481 --loop_depth;
2482#endif
2483}
2484
2112void 2485void
2113ev_unloop (EV_P_ int how) 2486ev_break (EV_P_ int how)
2114{ 2487{
2115 loop_done = how; 2488 loop_done = how;
2116} 2489}
2117 2490
2491void
2492ev_ref (EV_P)
2493{
2494 ++activecnt;
2495}
2496
2497void
2498ev_unref (EV_P)
2499{
2500 --activecnt;
2501}
2502
2503void
2504ev_now_update (EV_P)
2505{
2506 time_update (EV_A_ 1e100);
2507}
2508
2509void
2510ev_suspend (EV_P)
2511{
2512 ev_now_update (EV_A);
2513}
2514
2515void
2516ev_resume (EV_P)
2517{
2518 ev_tstamp mn_prev = mn_now;
2519
2520 ev_now_update (EV_A);
2521 timers_reschedule (EV_A_ mn_now - mn_prev);
2522#if EV_PERIODIC_ENABLE
2523 /* TODO: really do this? */
2524 periodics_reschedule (EV_A);
2525#endif
2526}
2527
2118/*****************************************************************************/ 2528/*****************************************************************************/
2529/* singly-linked list management, used when the expected list length is short */
2119 2530
2120inline_size void 2531inline_size void
2121wlist_add (WL *head, WL elem) 2532wlist_add (WL *head, WL elem)
2122{ 2533{
2123 elem->next = *head; 2534 elem->next = *head;
… …
2127inline_size void 2538inline_size void
2128wlist_del (WL *head, WL elem) 2539wlist_del (WL *head, WL elem)
2129{ 2540{
2130 while (*head) 2541 while (*head)
2131 { 2542 {
2132 if (*head == elem) 2543 if (expect_true (*head == elem))
2133 { 2544 {
2134 *head = elem->next; 2545 *head = elem->next;
2135 return; 2546 break;
2136 } 2547 }
2137 2548
2138 head = &(*head)->next; 2549 head = &(*head)->next;
2139 } 2550 }
2140} 2551}
2141 2552
2553/* internal, faster, version of ev_clear_pending */
2142inline_speed void 2554inline_speed void
2143clear_pending (EV_P_ W w) 2555clear_pending (EV_P_ W w)
2144{ 2556{
2145 if (w->pending) 2557 if (w->pending)
2146 { 2558 {
2147 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2559 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2148 w->pending = 0; 2560 w->pending = 0;
2149 } 2561 }
2150} 2562}
2151 2563
2152int 2564int
… …
2156 int pending = w_->pending; 2568 int pending = w_->pending;
2157 2569
2158 if (expect_true (pending)) 2570 if (expect_true (pending))
2159 { 2571 {
2160 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2572 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2573 p->w = (W)&pending_w;
2161 w_->pending = 0; 2574 w_->pending = 0;
2162 p->w = 0;
2163 return p->events; 2575 return p->events;
2164 } 2576 }
2165 else 2577 else
2166 return 0; 2578 return 0;
2167} 2579}
2168 2580
2169inline_size void 2581inline_size void
2170pri_adjust (EV_P_ W w) 2582pri_adjust (EV_P_ W w)
2171{ 2583{
2172 int pri = w->priority; 2584 int pri = ev_priority (w);
2173 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2585 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2174 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2586 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2175 w->priority = pri; 2587 ev_set_priority (w, pri);
2176} 2588}
2177 2589
2178inline_speed void 2590inline_speed void
2179ev_start (EV_P_ W w, int active) 2591ev_start (EV_P_ W w, int active)
2180{ 2592{
… …
2199 2611
2200 if (expect_false (ev_is_active (w))) 2612 if (expect_false (ev_is_active (w)))
2201 return; 2613 return;
2202 2614
2203 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2615 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2204 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2616 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2205 2617
2206 EV_FREQUENT_CHECK; 2618 EV_FREQUENT_CHECK;
2207 2619
2208 ev_start (EV_A_ (W)w, 1); 2620 ev_start (EV_A_ (W)w, 1);
2209 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2621 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2210 wlist_add (&anfds[fd].head, (WL)w); 2622 wlist_add (&anfds[fd].head, (WL)w);
2211 2623
2212 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2624 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2213 w->events &= ~EV__IOFDSET; 2625 w->events &= ~EV__IOFDSET;
2214 2626
2215 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2216} 2628}
2217 2629
… …
2227 EV_FREQUENT_CHECK; 2639 EV_FREQUENT_CHECK;
2228 2640
2229 wlist_del (&anfds[w->fd].head, (WL)w); 2641 wlist_del (&anfds[w->fd].head, (WL)w);
2230 ev_stop (EV_A_ (W)w); 2642 ev_stop (EV_A_ (W)w);
2231 2643
2232 fd_change (EV_A_ w->fd, 1); 2644 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2233 2645
2234 EV_FREQUENT_CHECK; 2646 EV_FREQUENT_CHECK;
2235} 2647}
2236 2648
2237void noinline 2649void noinline
… …
2279 timers [active] = timers [timercnt + HEAP0]; 2691 timers [active] = timers [timercnt + HEAP0];
2280 adjustheap (timers, timercnt, active); 2692 adjustheap (timers, timercnt, active);
2281 } 2693 }
2282 } 2694 }
2283 2695
2284 EV_FREQUENT_CHECK;
2285
2286 ev_at (w) -= mn_now; 2696 ev_at (w) -= mn_now;
2287 2697
2288 ev_stop (EV_A_ (W)w); 2698 ev_stop (EV_A_ (W)w);
2699
2700 EV_FREQUENT_CHECK;
2289} 2701}
2290 2702
2291void noinline 2703void noinline
2292ev_timer_again (EV_P_ ev_timer *w) 2704ev_timer_again (EV_P_ ev_timer *w)
2293{ 2705{
… …
2311 } 2723 }
2312 2724
2313 EV_FREQUENT_CHECK; 2725 EV_FREQUENT_CHECK;
2314} 2726}
2315 2727
2728ev_tstamp
2729ev_timer_remaining (EV_P_ ev_timer *w)
2730{
2731 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2732}
2733
2316#if EV_PERIODIC_ENABLE 2734#if EV_PERIODIC_ENABLE
2317void noinline 2735void noinline
2318ev_periodic_start (EV_P_ ev_periodic *w) 2736ev_periodic_start (EV_P_ ev_periodic *w)
2319{ 2737{
2320 if (expect_false (ev_is_active (w))) 2738 if (expect_false (ev_is_active (w)))
… …
2366 periodics [active] = periodics [periodiccnt + HEAP0]; 2784 periodics [active] = periodics [periodiccnt + HEAP0];
2367 adjustheap (periodics, periodiccnt, active); 2785 adjustheap (periodics, periodiccnt, active);
2368 } 2786 }
2369 } 2787 }
2370 2788
2371 EV_FREQUENT_CHECK;
2372
2373 ev_stop (EV_A_ (W)w); 2789 ev_stop (EV_A_ (W)w);
2790
2791 EV_FREQUENT_CHECK;
2374} 2792}
2375 2793
2376void noinline 2794void noinline
2377ev_periodic_again (EV_P_ ev_periodic *w) 2795ev_periodic_again (EV_P_ ev_periodic *w)
2378{ 2796{
… …
2384 2802
2385#ifndef SA_RESTART 2803#ifndef SA_RESTART
2386# define SA_RESTART 0 2804# define SA_RESTART 0
2387#endif 2805#endif
2388 2806
2807#if EV_SIGNAL_ENABLE
2808
2389void noinline 2809void noinline
2390ev_signal_start (EV_P_ ev_signal *w) 2810ev_signal_start (EV_P_ ev_signal *w)
2391{ 2811{
2392#if EV_MULTIPLICITY
2393 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2394#endif
2395 if (expect_false (ev_is_active (w))) 2812 if (expect_false (ev_is_active (w)))
2396 return; 2813 return;
2397 2814
2398 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2815 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2399 2816
2400 evpipe_init (EV_A); 2817#if EV_MULTIPLICITY
2818 assert (("libev: a signal must not be attached to two different loops",
2819 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2401 2820
2402 EV_FREQUENT_CHECK; 2821 signals [w->signum - 1].loop = EV_A;
2822#endif
2403 2823
2824 EV_FREQUENT_CHECK;
2825
2826#if EV_USE_SIGNALFD
2827 if (sigfd == -2)
2404 { 2828 {
2405#ifndef _WIN32 2829 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2406 sigset_t full, prev; 2830 if (sigfd < 0 && errno == EINVAL)
2407 sigfillset (&full); 2831 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2408 sigprocmask (SIG_SETMASK, &full, &prev);
2409#endif
2410 2832
2411 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2833 if (sigfd >= 0)
2834 {
2835 fd_intern (sigfd); /* doing it twice will not hurt */
2412 2836
2413#ifndef _WIN32 2837 sigemptyset (&sigfd_set);
2414 sigprocmask (SIG_SETMASK, &prev, 0); 2838
2415#endif 2839 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2840 ev_set_priority (&sigfd_w, EV_MAXPRI);
2841 ev_io_start (EV_A_ &sigfd_w);
2842 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2843 }
2416 } 2844 }
2845
2846 if (sigfd >= 0)
2847 {
2848 /* TODO: check .head */
2849 sigaddset (&sigfd_set, w->signum);
2850 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2851
2852 signalfd (sigfd, &sigfd_set, 0);
2853 }
2854#endif
2417 2855
2418 ev_start (EV_A_ (W)w, 1); 2856 ev_start (EV_A_ (W)w, 1);
2419 wlist_add (&signals [w->signum - 1].head, (WL)w); 2857 wlist_add (&signals [w->signum - 1].head, (WL)w);
2420 2858
2421 if (!((WL)w)->next) 2859 if (!((WL)w)->next)
2860# if EV_USE_SIGNALFD
2861 if (sigfd < 0) /*TODO*/
2862# endif
2422 { 2863 {
2423#if _WIN32 2864# ifdef _WIN32
2865 evpipe_init (EV_A);
2866
2424 signal (w->signum, ev_sighandler); 2867 signal (w->signum, ev_sighandler);
2425#else 2868# else
2426 struct sigaction sa; 2869 struct sigaction sa;
2870
2871 evpipe_init (EV_A);
2872
2427 sa.sa_handler = ev_sighandler; 2873 sa.sa_handler = ev_sighandler;
2428 sigfillset (&sa.sa_mask); 2874 sigfillset (&sa.sa_mask);
2429 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2875 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2430 sigaction (w->signum, &sa, 0); 2876 sigaction (w->signum, &sa, 0);
2877
2878 sigemptyset (&sa.sa_mask);
2879 sigaddset (&sa.sa_mask, w->signum);
2880 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2431#endif 2881#endif
2432 } 2882 }
2433 2883
2434 EV_FREQUENT_CHECK; 2884 EV_FREQUENT_CHECK;
2435} 2885}
2436 2886
2437void noinline 2887void noinline
… …
2445 2895
2446 wlist_del (&signals [w->signum - 1].head, (WL)w); 2896 wlist_del (&signals [w->signum - 1].head, (WL)w);
2447 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2448 2898
2449 if (!signals [w->signum - 1].head) 2899 if (!signals [w->signum - 1].head)
2900 {
2901#if EV_MULTIPLICITY
2902 signals [w->signum - 1].loop = 0; /* unattach from signal */
2903#endif
2904#if EV_USE_SIGNALFD
2905 if (sigfd >= 0)
2906 {
2907 sigset_t ss;
2908
2909 sigemptyset (&ss);
2910 sigaddset (&ss, w->signum);
2911 sigdelset (&sigfd_set, w->signum);
2912
2913 signalfd (sigfd, &sigfd_set, 0);
2914 sigprocmask (SIG_UNBLOCK, &ss, 0);
2915 }
2916 else
2917#endif
2450 signal (w->signum, SIG_DFL); 2918 signal (w->signum, SIG_DFL);
2919 }
2451 2920
2452 EV_FREQUENT_CHECK; 2921 EV_FREQUENT_CHECK;
2453} 2922}
2923
2924#endif
2925
2926#if EV_CHILD_ENABLE
2454 2927
2455void 2928void
2456ev_child_start (EV_P_ ev_child *w) 2929ev_child_start (EV_P_ ev_child *w)
2457{ 2930{
2458#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
… …
2462 return; 2935 return;
2463 2936
2464 EV_FREQUENT_CHECK; 2937 EV_FREQUENT_CHECK;
2465 2938
2466 ev_start (EV_A_ (W)w, 1); 2939 ev_start (EV_A_ (W)w, 1);
2467 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2940 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2468 2941
2469 EV_FREQUENT_CHECK; 2942 EV_FREQUENT_CHECK;
2470} 2943}
2471 2944
2472void 2945void
… …
2476 if (expect_false (!ev_is_active (w))) 2949 if (expect_false (!ev_is_active (w)))
2477 return; 2950 return;
2478 2951
2479 EV_FREQUENT_CHECK; 2952 EV_FREQUENT_CHECK;
2480 2953
2481 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2954 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2482 ev_stop (EV_A_ (W)w); 2955 ev_stop (EV_A_ (W)w);
2483 2956
2484 EV_FREQUENT_CHECK; 2957 EV_FREQUENT_CHECK;
2485} 2958}
2959
2960#endif
2486 2961
2487#if EV_STAT_ENABLE 2962#if EV_STAT_ENABLE
2488 2963
2489# ifdef _WIN32 2964# ifdef _WIN32
2490# undef lstat 2965# undef lstat
… …
2496#define MIN_STAT_INTERVAL 0.1074891 2971#define MIN_STAT_INTERVAL 0.1074891
2497 2972
2498static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2973static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2499 2974
2500#if EV_USE_INOTIFY 2975#if EV_USE_INOTIFY
2501# define EV_INOTIFY_BUFSIZE 8192 2976
2977/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2978# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2502 2979
2503static void noinline 2980static void noinline
2504infy_add (EV_P_ ev_stat *w) 2981infy_add (EV_P_ ev_stat *w)
2505{ 2982{
2506 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2983 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2507 2984
2508 if (w->wd < 0) 2985 if (w->wd >= 0)
2986 {
2987 struct statfs sfs;
2988
2989 /* now local changes will be tracked by inotify, but remote changes won't */
2990 /* unless the filesystem is known to be local, we therefore still poll */
2991 /* also do poll on <2.6.25, but with normal frequency */
2992
2993 if (!fs_2625)
2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2995 else if (!statfs (w->path, &sfs)
2996 && (sfs.f_type == 0x1373 /* devfs */
2997 || sfs.f_type == 0xEF53 /* ext2/3 */
2998 || sfs.f_type == 0x3153464a /* jfs */
2999 || sfs.f_type == 0x52654973 /* reiser3 */
3000 || sfs.f_type == 0x01021994 /* tempfs */
3001 || sfs.f_type == 0x58465342 /* xfs */))
3002 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3003 else
3004 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2509 { 3005 }
3006 else
3007 {
3008 /* can't use inotify, continue to stat */
2510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3009 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2511 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2512 3010
2513 /* monitor some parent directory for speedup hints */ 3011 /* if path is not there, monitor some parent directory for speedup hints */
2514 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3012 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2515 /* but an efficiency issue only */ 3013 /* but an efficiency issue only */
2516 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3014 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2517 { 3015 {
2518 char path [4096]; 3016 char path [4096];
… …
2534 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3032 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2535 } 3033 }
2536 } 3034 }
2537 3035
2538 if (w->wd >= 0) 3036 if (w->wd >= 0)
2539 {
2540 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3037 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2541 3038
2542 /* now local changes will be tracked by inotify, but remote changes won't */ 3039 /* now re-arm timer, if required */
2543 /* unless the filesystem it known to be local, we therefore still poll */ 3040 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2544 /* also do poll on <2.6.25, but with normal frequency */
2545 struct statfs sfs;
2546
2547 if (fs_2625 && !statfs (w->path, &sfs))
2548 if (sfs.f_type == 0x1373 /* devfs */
2549 || sfs.f_type == 0xEF53 /* ext2/3 */
2550 || sfs.f_type == 0x3153464a /* jfs */
2551 || sfs.f_type == 0x52654973 /* reiser3 */
2552 || sfs.f_type == 0x01021994 /* tempfs */
2553 || sfs.f_type == 0x58465342 /* xfs */)
2554 return;
2555
2556 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2557 ev_timer_again (EV_A_ &w->timer); 3041 ev_timer_again (EV_A_ &w->timer);
2558 } 3042 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2559} 3043}
2560 3044
2561static void noinline 3045static void noinline
2562infy_del (EV_P_ ev_stat *w) 3046infy_del (EV_P_ ev_stat *w)
2563{ 3047{
… …
2566 3050
2567 if (wd < 0) 3051 if (wd < 0)
2568 return; 3052 return;
2569 3053
2570 w->wd = -2; 3054 w->wd = -2;
2571 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3055 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2572 wlist_del (&fs_hash [slot].head, (WL)w); 3056 wlist_del (&fs_hash [slot].head, (WL)w);
2573 3057
2574 /* remove this watcher, if others are watching it, they will rearm */ 3058 /* remove this watcher, if others are watching it, they will rearm */
2575 inotify_rm_watch (fs_fd, wd); 3059 inotify_rm_watch (fs_fd, wd);
2576} 3060}
… …
2578static void noinline 3062static void noinline
2579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3063infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2580{ 3064{
2581 if (slot < 0) 3065 if (slot < 0)
2582 /* overflow, need to check for all hash slots */ 3066 /* overflow, need to check for all hash slots */
2583 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3067 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2584 infy_wd (EV_A_ slot, wd, ev); 3068 infy_wd (EV_A_ slot, wd, ev);
2585 else 3069 else
2586 { 3070 {
2587 WL w_; 3071 WL w_;
2588 3072
2589 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3073 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2590 { 3074 {
2591 ev_stat *w = (ev_stat *)w_; 3075 ev_stat *w = (ev_stat *)w_;
2592 w_ = w_->next; /* lets us remove this watcher and all before it */ 3076 w_ = w_->next; /* lets us remove this watcher and all before it */
2593 3077
2594 if (w->wd == wd || wd == -1) 3078 if (w->wd == wd || wd == -1)
2595 { 3079 {
2596 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3080 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2597 { 3081 {
2598 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3082 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2599 w->wd = -1; 3083 w->wd = -1;
2600 infy_add (EV_A_ w); /* re-add, no matter what */ 3084 infy_add (EV_A_ w); /* re-add, no matter what */
2601 } 3085 }
2602 3086
2603 stat_timer_cb (EV_A_ &w->timer, 0); 3087 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2608 3092
2609static void 3093static void
2610infy_cb (EV_P_ ev_io *w, int revents) 3094infy_cb (EV_P_ ev_io *w, int revents)
2611{ 3095{
2612 char buf [EV_INOTIFY_BUFSIZE]; 3096 char buf [EV_INOTIFY_BUFSIZE];
2613 struct inotify_event *ev = (struct inotify_event *)buf;
2614 int ofs; 3097 int ofs;
2615 int len = read (fs_fd, buf, sizeof (buf)); 3098 int len = read (fs_fd, buf, sizeof (buf));
2616 3099
2617 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3100 for (ofs = 0; ofs < len; )
3101 {
3102 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2618 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3103 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3104 ofs += sizeof (struct inotify_event) + ev->len;
3105 }
2619} 3106}
2620 3107
2621inline_size void 3108inline_size void
2622check_2625 (EV_P) 3109ev_check_2625 (EV_P)
2623{ 3110{
2624 /* kernels < 2.6.25 are borked 3111 /* kernels < 2.6.25 are borked
2625 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3112 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2626 */ 3113 */
2627 struct utsname buf; 3114 if (ev_linux_version () < 0x020619)
2628 int major, minor, micro;
2629
2630 if (uname (&buf))
2631 return; 3115 return;
2632 3116
2633 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2634 return;
2635
2636 if (major < 2
2637 || (major == 2 && minor < 6)
2638 || (major == 2 && minor == 6 && micro < 25))
2639 return;
2640
2641 fs_2625 = 1; 3117 fs_2625 = 1;
3118}
3119
3120inline_size int
3121infy_newfd (void)
3122{
3123#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3124 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3125 if (fd >= 0)
3126 return fd;
3127#endif
3128 return inotify_init ();
2642} 3129}
2643 3130
2644inline_size void 3131inline_size void
2645infy_init (EV_P) 3132infy_init (EV_P)
2646{ 3133{
2647 if (fs_fd != -2) 3134 if (fs_fd != -2)
2648 return; 3135 return;
2649 3136
2650 fs_fd = -1; 3137 fs_fd = -1;
2651 3138
2652 check_2625 (EV_A); 3139 ev_check_2625 (EV_A);
2653 3140
2654 fs_fd = inotify_init (); 3141 fs_fd = infy_newfd ();
2655 3142
2656 if (fs_fd >= 0) 3143 if (fs_fd >= 0)
2657 { 3144 {
3145 fd_intern (fs_fd);
2658 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3146 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2659 ev_set_priority (&fs_w, EV_MAXPRI); 3147 ev_set_priority (&fs_w, EV_MAXPRI);
2660 ev_io_start (EV_A_ &fs_w); 3148 ev_io_start (EV_A_ &fs_w);
3149 ev_unref (EV_A);
2661 } 3150 }
2662} 3151}
2663 3152
2664inline_size void 3153inline_size void
2665infy_fork (EV_P) 3154infy_fork (EV_P)
… …
2667 int slot; 3156 int slot;
2668 3157
2669 if (fs_fd < 0) 3158 if (fs_fd < 0)
2670 return; 3159 return;
2671 3160
3161 ev_ref (EV_A);
3162 ev_io_stop (EV_A_ &fs_w);
2672 close (fs_fd); 3163 close (fs_fd);
2673 fs_fd = inotify_init (); 3164 fs_fd = infy_newfd ();
2674 3165
3166 if (fs_fd >= 0)
3167 {
3168 fd_intern (fs_fd);
3169 ev_io_set (&fs_w, fs_fd, EV_READ);
3170 ev_io_start (EV_A_ &fs_w);
3171 ev_unref (EV_A);
3172 }
3173
2675 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3174 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2676 { 3175 {
2677 WL w_ = fs_hash [slot].head; 3176 WL w_ = fs_hash [slot].head;
2678 fs_hash [slot].head = 0; 3177 fs_hash [slot].head = 0;
2679 3178
2680 while (w_) 3179 while (w_)
… …
2685 w->wd = -1; 3184 w->wd = -1;
2686 3185
2687 if (fs_fd >= 0) 3186 if (fs_fd >= 0)
2688 infy_add (EV_A_ w); /* re-add, no matter what */ 3187 infy_add (EV_A_ w); /* re-add, no matter what */
2689 else 3188 else
3189 {
3190 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3191 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2690 ev_timer_again (EV_A_ &w->timer); 3192 ev_timer_again (EV_A_ &w->timer);
3193 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3194 }
2691 } 3195 }
2692 } 3196 }
2693} 3197}
2694 3198
2695#endif 3199#endif
… …
2712static void noinline 3216static void noinline
2713stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3217stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2714{ 3218{
2715 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3219 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2716 3220
2717 /* we copy this here each the time so that */ 3221 ev_statdata prev = w->attr;
2718 /* prev has the old value when the callback gets invoked */
2719 w->prev = w->attr;
2720 ev_stat_stat (EV_A_ w); 3222 ev_stat_stat (EV_A_ w);
2721 3223
2722 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3224 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2723 if ( 3225 if (
2724 w->prev.st_dev != w->attr.st_dev 3226 prev.st_dev != w->attr.st_dev
2725 || w->prev.st_ino != w->attr.st_ino 3227 || prev.st_ino != w->attr.st_ino
2726 || w->prev.st_mode != w->attr.st_mode 3228 || prev.st_mode != w->attr.st_mode
2727 || w->prev.st_nlink != w->attr.st_nlink 3229 || prev.st_nlink != w->attr.st_nlink
2728 || w->prev.st_uid != w->attr.st_uid 3230 || prev.st_uid != w->attr.st_uid
2729 || w->prev.st_gid != w->attr.st_gid 3231 || prev.st_gid != w->attr.st_gid
2730 || w->prev.st_rdev != w->attr.st_rdev 3232 || prev.st_rdev != w->attr.st_rdev
2731 || w->prev.st_size != w->attr.st_size 3233 || prev.st_size != w->attr.st_size
2732 || w->prev.st_atime != w->attr.st_atime 3234 || prev.st_atime != w->attr.st_atime
2733 || w->prev.st_mtime != w->attr.st_mtime 3235 || prev.st_mtime != w->attr.st_mtime
2734 || w->prev.st_ctime != w->attr.st_ctime 3236 || prev.st_ctime != w->attr.st_ctime
2735 ) { 3237 ) {
3238 /* we only update w->prev on actual differences */
3239 /* in case we test more often than invoke the callback, */
3240 /* to ensure that prev is always different to attr */
3241 w->prev = prev;
3242
2736 #if EV_USE_INOTIFY 3243 #if EV_USE_INOTIFY
2737 if (fs_fd >= 0) 3244 if (fs_fd >= 0)
2738 { 3245 {
2739 infy_del (EV_A_ w); 3246 infy_del (EV_A_ w);
2740 infy_add (EV_A_ w); 3247 infy_add (EV_A_ w);
… …
2765 3272
2766 if (fs_fd >= 0) 3273 if (fs_fd >= 0)
2767 infy_add (EV_A_ w); 3274 infy_add (EV_A_ w);
2768 else 3275 else
2769#endif 3276#endif
3277 {
2770 ev_timer_again (EV_A_ &w->timer); 3278 ev_timer_again (EV_A_ &w->timer);
3279 ev_unref (EV_A);
3280 }
2771 3281
2772 ev_start (EV_A_ (W)w, 1); 3282 ev_start (EV_A_ (W)w, 1);
2773 3283
2774 EV_FREQUENT_CHECK; 3284 EV_FREQUENT_CHECK;
2775} 3285}
… …
2784 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
2785 3295
2786#if EV_USE_INOTIFY 3296#if EV_USE_INOTIFY
2787 infy_del (EV_A_ w); 3297 infy_del (EV_A_ w);
2788#endif 3298#endif
3299
3300 if (ev_is_active (&w->timer))
3301 {
3302 ev_ref (EV_A);
2789 ev_timer_stop (EV_A_ &w->timer); 3303 ev_timer_stop (EV_A_ &w->timer);
3304 }
2790 3305
2791 ev_stop (EV_A_ (W)w); 3306 ev_stop (EV_A_ (W)w);
2792 3307
2793 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
2794} 3309}
… …
2839 3354
2840 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
2841} 3356}
2842#endif 3357#endif
2843 3358
3359#if EV_PREPARE_ENABLE
2844void 3360void
2845ev_prepare_start (EV_P_ ev_prepare *w) 3361ev_prepare_start (EV_P_ ev_prepare *w)
2846{ 3362{
2847 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
2848 return; 3364 return;
… …
2874 3390
2875 ev_stop (EV_A_ (W)w); 3391 ev_stop (EV_A_ (W)w);
2876 3392
2877 EV_FREQUENT_CHECK; 3393 EV_FREQUENT_CHECK;
2878} 3394}
3395#endif
2879 3396
3397#if EV_CHECK_ENABLE
2880void 3398void
2881ev_check_start (EV_P_ ev_check *w) 3399ev_check_start (EV_P_ ev_check *w)
2882{ 3400{
2883 if (expect_false (ev_is_active (w))) 3401 if (expect_false (ev_is_active (w)))
2884 return; 3402 return;
… …
2910 3428
2911 ev_stop (EV_A_ (W)w); 3429 ev_stop (EV_A_ (W)w);
2912 3430
2913 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2914} 3432}
3433#endif
2915 3434
2916#if EV_EMBED_ENABLE 3435#if EV_EMBED_ENABLE
2917void noinline 3436void noinline
2918ev_embed_sweep (EV_P_ ev_embed *w) 3437ev_embed_sweep (EV_P_ ev_embed *w)
2919{ 3438{
2920 ev_loop (w->other, EVLOOP_NONBLOCK); 3439 ev_run (w->other, EVRUN_NOWAIT);
2921} 3440}
2922 3441
2923static void 3442static void
2924embed_io_cb (EV_P_ ev_io *io, int revents) 3443embed_io_cb (EV_P_ ev_io *io, int revents)
2925{ 3444{
2926 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3445 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2927 3446
2928 if (ev_cb (w)) 3447 if (ev_cb (w))
2929 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3448 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2930 else 3449 else
2931 ev_loop (w->other, EVLOOP_NONBLOCK); 3450 ev_run (w->other, EVRUN_NOWAIT);
2932} 3451}
2933 3452
2934static void 3453static void
2935embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3454embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2936{ 3455{
2937 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3456 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2938 3457
2939 { 3458 {
2940 struct ev_loop *loop = w->other; 3459 EV_P = w->other;
2941 3460
2942 while (fdchangecnt) 3461 while (fdchangecnt)
2943 { 3462 {
2944 fd_reify (EV_A); 3463 fd_reify (EV_A);
2945 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3464 ev_run (EV_A_ EVRUN_NOWAIT);
2946 } 3465 }
2947 } 3466 }
2948} 3467}
2949 3468
2950static void 3469static void
… …
2953 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3472 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2954 3473
2955 ev_embed_stop (EV_A_ w); 3474 ev_embed_stop (EV_A_ w);
2956 3475
2957 { 3476 {
2958 struct ev_loop *loop = w->other; 3477 EV_P = w->other;
2959 3478
2960 ev_loop_fork (EV_A); 3479 ev_loop_fork (EV_A);
2961 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3480 ev_run (EV_A_ EVRUN_NOWAIT);
2962 } 3481 }
2963 3482
2964 ev_embed_start (EV_A_ w); 3483 ev_embed_start (EV_A_ w);
2965} 3484}
2966 3485
… …
2977{ 3496{
2978 if (expect_false (ev_is_active (w))) 3497 if (expect_false (ev_is_active (w)))
2979 return; 3498 return;
2980 3499
2981 { 3500 {
2982 struct ev_loop *loop = w->other; 3501 EV_P = w->other;
2983 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3502 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2984 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3503 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2985 } 3504 }
2986 3505
2987 EV_FREQUENT_CHECK; 3506 EV_FREQUENT_CHECK;
… …
3014 3533
3015 ev_io_stop (EV_A_ &w->io); 3534 ev_io_stop (EV_A_ &w->io);
3016 ev_prepare_stop (EV_A_ &w->prepare); 3535 ev_prepare_stop (EV_A_ &w->prepare);
3017 ev_fork_stop (EV_A_ &w->fork); 3536 ev_fork_stop (EV_A_ &w->fork);
3018 3537
3538 ev_stop (EV_A_ (W)w);
3539
3019 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
3020} 3541}
3021#endif 3542#endif
3022 3543
3023#if EV_FORK_ENABLE 3544#if EV_FORK_ENABLE
… …
3063ev_async_start (EV_P_ ev_async *w) 3584ev_async_start (EV_P_ ev_async *w)
3064{ 3585{
3065 if (expect_false (ev_is_active (w))) 3586 if (expect_false (ev_is_active (w)))
3066 return; 3587 return;
3067 3588
3589 w->sent = 0;
3590
3068 evpipe_init (EV_A); 3591 evpipe_init (EV_A);
3069 3592
3070 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
3071 3594
3072 ev_start (EV_A_ (W)w, ++asynccnt); 3595 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3099 3622
3100void 3623void
3101ev_async_send (EV_P_ ev_async *w) 3624ev_async_send (EV_P_ ev_async *w)
3102{ 3625{
3103 w->sent = 1; 3626 w->sent = 1;
3104 evpipe_write (EV_A_ &gotasync); 3627 evpipe_write (EV_A_ &async_pending);
3105} 3628}
3106#endif 3629#endif
3107 3630
3108/*****************************************************************************/ 3631/*****************************************************************************/
3109 3632
… …
3149{ 3672{
3150 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3673 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3151 3674
3152 if (expect_false (!once)) 3675 if (expect_false (!once))
3153 { 3676 {
3154 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3677 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3155 return; 3678 return;
3156 } 3679 }
3157 3680
3158 once->cb = cb; 3681 once->cb = cb;
3159 once->arg = arg; 3682 once->arg = arg;
… …
3173 } 3696 }
3174} 3697}
3175 3698
3176/*****************************************************************************/ 3699/*****************************************************************************/
3177 3700
3178#if 0 3701#if EV_WALK_ENABLE
3179void 3702void
3180ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3703ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3181{ 3704{
3182 int i, j; 3705 int i, j;
3183 ev_watcher_list *wl, *wn; 3706 ev_watcher_list *wl, *wn;
… …
3199#if EV_USE_INOTIFY 3722#if EV_USE_INOTIFY
3200 if (ev_cb ((ev_io *)wl) == infy_cb) 3723 if (ev_cb ((ev_io *)wl) == infy_cb)
3201 ; 3724 ;
3202 else 3725 else
3203#endif 3726#endif
3204 if ((ev_io *)wl != &pipeev) 3727 if ((ev_io *)wl != &pipe_w)
3205 if (types & EV_IO) 3728 if (types & EV_IO)
3206 cb (EV_A_ EV_IO, wl); 3729 cb (EV_A_ EV_IO, wl);
3207 3730
3208 wl = wn; 3731 wl = wn;
3209 } 3732 }
… …
3246 if (types & EV_ASYNC) 3769 if (types & EV_ASYNC)
3247 for (i = asynccnt; i--; ) 3770 for (i = asynccnt; i--; )
3248 cb (EV_A_ EV_ASYNC, asyncs [i]); 3771 cb (EV_A_ EV_ASYNC, asyncs [i]);
3249#endif 3772#endif
3250 3773
3774#if EV_PREPARE_ENABLE
3251 if (types & EV_PREPARE) 3775 if (types & EV_PREPARE)
3252 for (i = preparecnt; i--; ) 3776 for (i = preparecnt; i--; )
3253#if EV_EMBED_ENABLE 3777# if EV_EMBED_ENABLE
3254 if (ev_cb (prepares [i]) != embed_prepare_cb) 3778 if (ev_cb (prepares [i]) != embed_prepare_cb)
3255#endif 3779# endif
3256 cb (EV_A_ EV_PREPARE, prepares [i]); 3780 cb (EV_A_ EV_PREPARE, prepares [i]);
3781#endif
3257 3782
3783#if EV_CHECK_ENABLE
3258 if (types & EV_CHECK) 3784 if (types & EV_CHECK)
3259 for (i = checkcnt; i--; ) 3785 for (i = checkcnt; i--; )
3260 cb (EV_A_ EV_CHECK, checks [i]); 3786 cb (EV_A_ EV_CHECK, checks [i]);
3787#endif
3261 3788
3789#if EV_SIGNAL_ENABLE
3262 if (types & EV_SIGNAL) 3790 if (types & EV_SIGNAL)
3263 for (i = 0; i < signalmax; ++i) 3791 for (i = 0; i < EV_NSIG - 1; ++i)
3264 for (wl = signals [i].head; wl; ) 3792 for (wl = signals [i].head; wl; )
3265 { 3793 {
3266 wn = wl->next; 3794 wn = wl->next;
3267 cb (EV_A_ EV_SIGNAL, wl); 3795 cb (EV_A_ EV_SIGNAL, wl);
3268 wl = wn; 3796 wl = wn;
3269 } 3797 }
3798#endif
3270 3799
3800#if EV_CHILD_ENABLE
3271 if (types & EV_CHILD) 3801 if (types & EV_CHILD)
3272 for (i = EV_PID_HASHSIZE; i--; ) 3802 for (i = (EV_PID_HASHSIZE); i--; )
3273 for (wl = childs [i]; wl; ) 3803 for (wl = childs [i]; wl; )
3274 { 3804 {
3275 wn = wl->next; 3805 wn = wl->next;
3276 cb (EV_A_ EV_CHILD, wl); 3806 cb (EV_A_ EV_CHILD, wl);
3277 wl = wn; 3807 wl = wn;
3278 } 3808 }
3809#endif
3279/* EV_STAT 0x00001000 /* stat data changed */ 3810/* EV_STAT 0x00001000 /* stat data changed */
3280/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3811/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3281} 3812}
3282#endif 3813#endif
3283 3814
3284#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
3285 #include "ev_wrap.h" 3816 #include "ev_wrap.h"
3286#endif 3817#endif
3287 3818
3288#ifdef __cplusplus 3819EV_CPP(})
3289}
3290#endif
3291 3820

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