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Comparing libev/ev.c (file contents):
Revision 1.285 by root, Wed Apr 15 19:35:53 2009 UTC vs.
Revision 1.366 by root, Mon Jan 10 01:58:54 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
… …
57# endif 53# endif
58# ifndef EV_USE_MONOTONIC 54# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 55# define EV_USE_MONOTONIC 1
60# endif 56# endif
61# endif 57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
62# endif 60# endif
63 61
64# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
77# endif 75# endif
78# endif 76# endif
79 77
78# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
83# else 82# else
83# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
86# endif 94# endif
87 95
96# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 99# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 100# else
101# undef EV_USE_POLL
100# define EV_USE_POLL 0 102# define EV_USE_POLL 0
101# endif
102# endif 103# endif
103 104
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
107# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
110# endif 112# endif
111 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
118# endif 121# endif
119 122
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
123# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
126# endif 130# endif
127 131
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
134# endif 139# endif
135 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
142# endif 157# endif
143 158
144#endif 159#endif
145 160
146#include <math.h> 161#include <math.h>
147#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
148#include <fcntl.h> 164#include <fcntl.h>
149#include <stddef.h> 165#include <stddef.h>
150 166
151#include <stdio.h> 167#include <stdio.h>
152 168
153#include <assert.h> 169#include <assert.h>
154#include <errno.h> 170#include <errno.h>
155#include <sys/types.h> 171#include <sys/types.h>
156#include <time.h> 172#include <time.h>
173#include <limits.h>
157 174
158#include <signal.h> 175#include <signal.h>
159 176
160#ifdef EV_H 177#ifdef EV_H
161# include EV_H 178# include EV_H
162#else 179#else
163# include "ev.h" 180# include "ev.h"
164#endif 181#endif
182
183EV_CPP(extern "C" {)
165 184
166#ifndef _WIN32 185#ifndef _WIN32
167# include <sys/time.h> 186# include <sys/time.h>
168# include <sys/wait.h> 187# include <sys/wait.h>
169# include <unistd.h> 188# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 192# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
176# endif 195# endif
196# undef EV_AVOID_STDIO
177#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
178 206
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
180 236
181#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 240# else
185# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
186# endif 242# endif
187#endif 243#endif
188 244
189#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 248# else
193# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
194# endif 250# endif
195#endif 251#endif
196 252
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 255#endif
200 256
201#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 260# else
205# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
206# endif 262# endif
207#endif 263#endif
208 264
209#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 267#endif
212 268
213#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
214# ifdef _WIN32 270# ifdef _WIN32
215# define EV_USE_POLL 0 271# define EV_USE_POLL 0
216# else 272# else
217# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 274# endif
219#endif 275#endif
220 276
221#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 280# else
225# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
226# endif 282# endif
227#endif 283#endif
228 284
… …
234# define EV_USE_PORT 0 290# define EV_USE_PORT 0
235#endif 291#endif
236 292
237#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 296# else
241# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
242# endif 298# endif
243#endif 299#endif
244 300
245#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 303#endif
252 304
253#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 307#endif
260 308
261#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 312# else
265# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
266# endif 322# endif
267#endif 323#endif
268 324
269#if 0 /* debugging */ 325#if 0 /* debugging */
270# define EV_VERIFY 3 326# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
273#endif 329#endif
274 330
275#ifndef EV_VERIFY 331#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 333#endif
278 334
279#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 337#endif
282 338
283#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
285#endif 355#endif
286 356
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
288 364
289#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
292#endif 368#endif
… …
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 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
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 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
436 perror (msg); 601 perror (msg);
602#endif
437 abort (); 603 abort ();
438 } 604 }
439} 605}
440 606
441static void * 607static void *
442ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
443{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
444 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
447 */ 616 */
448 617
449 if (size) 618 if (size)
450 return realloc (ptr, size); 619 return realloc (ptr, size);
451 620
452 free (ptr); 621 free (ptr);
453 return 0; 622 return 0;
623#endif
454} 624}
455 625
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 627
458void 628void
… …
466{ 636{
467 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
468 638
469 if (!ptr && size) 639 if (!ptr && size)
470 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
472 abort (); 646 abort ();
473 } 647 }
474 648
475 return ptr; 649 return ptr;
476} 650}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
480 654
481/*****************************************************************************/ 655/*****************************************************************************/
482 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
483typedef struct 661typedef struct
484{ 662{
485 WL head; 663 WL head;
486 unsigned char events; 664 unsigned char events; /* the events watched for */
487 unsigned char reify; 665 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 */ 666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 667 unsigned char unused;
490#if EV_USE_EPOLL 668#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 669 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 670#endif
493#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 672 SOCKET handle;
495#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
496} ANFD; 677} ANFD;
497 678
679/* stores the pending event set for a given watcher */
498typedef struct 680typedef struct
499{ 681{
500 W w; 682 W w;
501 int events; 683 int events; /* the pending event set for the given watcher */
502} ANPENDING; 684} ANPENDING;
503 685
504#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 687/* hash table entry per inotify-id */
506typedef struct 688typedef struct
… …
509} ANFS; 691} ANFS;
510#endif 692#endif
511 693
512/* Heap Entry */ 694/* Heap Entry */
513#if EV_HEAP_CACHE_AT 695#if EV_HEAP_CACHE_AT
696 /* a heap element */
514 typedef struct { 697 typedef struct {
515 ev_tstamp at; 698 ev_tstamp at;
516 WT w; 699 WT w;
517 } ANHE; 700 } ANHE;
518 701
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 702 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 703 #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 */ 704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 705#else
706 /* a heap element */
523 typedef WT ANHE; 707 typedef WT ANHE;
524 708
525 #define ANHE_w(he) (he) 709 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 710 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 711 #define ANHE_at_cache(he)
… …
551 735
552 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
553 737
554#endif 738#endif
555 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
556/*****************************************************************************/ 752/*****************************************************************************/
557 753
754#ifndef EV_HAVE_EV_TIME
558ev_tstamp 755ev_tstamp
559ev_time (void) 756ev_time (void)
560{ 757{
561#if EV_USE_REALTIME 758#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 759 if (expect_true (have_realtime))
… …
569 766
570 struct timeval tv; 767 struct timeval tv;
571 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 770}
771#endif
574 772
575inline_size ev_tstamp 773inline_size ev_tstamp
576get_clock (void) 774get_clock (void)
577{ 775{
578#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 799 if (delay > 0.)
602 { 800 {
603#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
604 struct timespec ts; 802 struct timespec ts;
605 803
606 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
610#elif defined(_WIN32) 806#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
612#else 808#else
613 struct timeval tv; 809 struct timeval tv;
614 810
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 */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
622#endif 816#endif
623 } 817 }
624} 818}
625 819
626/*****************************************************************************/ 820/*****************************************************************************/
627 821
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 822#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 823
824/* find a suitable new size for the given array, */
825/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 826inline_size int
631array_nextsize (int elem, int cur, int cnt) 827array_nextsize (int elem, int cur, int cnt)
632{ 828{
633 int ncur = cur + 1; 829 int ncur = cur + 1;
634 830
… …
680#define array_free(stem, idx) \ 876#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 877 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 878
683/*****************************************************************************/ 879/*****************************************************************************/
684 880
881/* dummy callback for pending events */
882static void noinline
883pendingcb (EV_P_ ev_prepare *w, int revents)
884{
885}
886
685void noinline 887void noinline
686ev_feed_event (EV_P_ void *w, int revents) 888ev_feed_event (EV_P_ void *w, int revents)
687{ 889{
688 W w_ = (W)w; 890 W w_ = (W)w;
689 int pri = ABSPRI (w_); 891 int pri = ABSPRI (w_);
… …
724} 926}
725 927
726/*****************************************************************************/ 928/*****************************************************************************/
727 929
728inline_speed void 930inline_speed void
729fd_event (EV_P_ int fd, int revents) 931fd_event_nocheck (EV_P_ int fd, int revents)
730{ 932{
731 ANFD *anfd = anfds + fd; 933 ANFD *anfd = anfds + fd;
732 ev_io *w; 934 ev_io *w;
733 935
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 936 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 940 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 941 ev_feed_event (EV_A_ (W)w, ev);
740 } 942 }
741} 943}
742 944
945/* do not submit kernel events for fds that have reify set */
946/* because that means they changed while we were polling for new events */
947inline_speed void
948fd_event (EV_P_ int fd, int revents)
949{
950 ANFD *anfd = anfds + fd;
951
952 if (expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents);
954}
955
743void 956void
744ev_feed_fd_event (EV_P_ int fd, int revents) 957ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 958{
746 if (fd >= 0 && fd < anfdmax) 959 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 960 fd_event_nocheck (EV_A_ fd, revents);
748} 961}
749 962
963/* make sure the external fd watch events are in-sync */
964/* with the kernel/libev internal state */
750inline_size void 965inline_size void
751fd_reify (EV_P) 966fd_reify (EV_P)
752{ 967{
753 int i; 968 int i;
754 969
… …
756 { 971 {
757 int fd = fdchanges [i]; 972 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 973 ANFD *anfd = anfds + fd;
759 ev_io *w; 974 ev_io *w;
760 975
761 unsigned char events = 0; 976 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify;
762 978
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 979 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 980
766#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
767 if (events) 982 if (o_reify & EV__IOFDSET)
768 { 983 {
769 unsigned long arg; 984 unsigned long arg;
770 #ifdef EV_FD_TO_WIN32_HANDLE
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 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)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
776 } 988 }
777#endif 989#endif
778 990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
779 { 992 {
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events; 993 anfd->events = 0;
785 994
786 if (o_events != events || o_reify & EV__IOFDSET) 995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events;
997
998 if (o_events != anfd->events)
999 o_reify = EV__IOFDSET; /* actually |= */
1000 }
1001
1002 if (o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1003 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1004 }
790 1005
791 fdchangecnt = 0; 1006 fdchangecnt = 0;
792} 1007}
793 1008
1009/* something about the given fd changed */
794inline_size void 1010inline_size void
795fd_change (EV_P_ int fd, int flags) 1011fd_change (EV_P_ int fd, int flags)
796{ 1012{
797 unsigned char reify = anfds [fd].reify; 1013 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1014 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1019 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1020 fdchanges [fdchangecnt - 1] = fd;
805 } 1021 }
806} 1022}
807 1023
1024/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1025inline_speed void
809fd_kill (EV_P_ int fd) 1026fd_kill (EV_P_ int fd)
810{ 1027{
811 ev_io *w; 1028 ev_io *w;
812 1029
… …
815 ev_io_stop (EV_A_ w); 1032 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1034 }
818} 1035}
819 1036
1037/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1038inline_size int
821fd_valid (int fd) 1039fd_valid (int fd)
822{ 1040{
823#ifdef _WIN32 1041#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1043#else
826 return fcntl (fd, F_GETFD) != -1; 1044 return fcntl (fd, F_GETFD) != -1;
827#endif 1045#endif
828} 1046}
829 1047
… …
847 1065
848 for (fd = anfdmax; fd--; ) 1066 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1067 if (anfds [fd].events)
850 { 1068 {
851 fd_kill (EV_A_ fd); 1069 fd_kill (EV_A_ fd);
852 return; 1070 break;
853 } 1071 }
854} 1072}
855 1073
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1074/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1075static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1080 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1081 if (anfds [fd].events)
864 { 1082 {
865 anfds [fd].events = 0; 1083 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1084 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1085 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1086 }
869} 1087}
870 1088
1089/* used to prepare libev internal fd's */
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102
871/*****************************************************************************/ 1103/*****************************************************************************/
872 1104
873/* 1105/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1106 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1107 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1108 * the branching factor of the d-tree.
877 */ 1109 */
878 1110
879/* 1111/*
… …
947 1179
948 for (;;) 1180 for (;;)
949 { 1181 {
950 int c = k << 1; 1182 int c = k << 1;
951 1183
952 if (c > N + HEAP0 - 1) 1184 if (c >= N + HEAP0)
953 break; 1185 break;
954 1186
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1187 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1188 ? 1 : 0;
957 1189
… …
989 1221
990 heap [k] = he; 1222 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1223 ev_active (ANHE_w (he)) = k;
992} 1224}
993 1225
1226/* move an element suitably so it is in a correct place */
994inline_size void 1227inline_size void
995adjustheap (ANHE *heap, int N, int k) 1228adjustheap (ANHE *heap, int N, int k)
996{ 1229{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1230 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1231 upheap (heap, k);
999 else 1232 else
1000 downheap (heap, N, k); 1233 downheap (heap, N, k);
1001} 1234}
1002 1235
… …
1012 upheap (heap, i + HEAP0); 1245 upheap (heap, i + HEAP0);
1013} 1246}
1014 1247
1015/*****************************************************************************/ 1248/*****************************************************************************/
1016 1249
1250/* associate signal watchers to a signal signal */
1017typedef struct 1251typedef struct
1018{ 1252{
1253 EV_ATOMIC_T pending;
1254#if EV_MULTIPLICITY
1255 EV_P;
1256#endif
1019 WL head; 1257 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1258} ANSIG;
1022 1259
1023static ANSIG *signals; 1260static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1261
1028/*****************************************************************************/ 1262/*****************************************************************************/
1029 1263
1030inline_speed void 1264#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 1265
1042static void noinline 1266static void noinline
1043evpipe_init (EV_P) 1267evpipe_init (EV_P)
1044{ 1268{
1045 if (!ev_is_active (&pipeev)) 1269 if (!ev_is_active (&pipe_w))
1046 { 1270 {
1047#if EV_USE_EVENTFD 1271# if EV_USE_EVENTFD
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1274 evfd = eventfd (0, 0);
1275
1276 if (evfd >= 0)
1049 { 1277 {
1050 evpipe [0] = -1; 1278 evpipe [0] = -1;
1051 fd_intern (evfd); 1279 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1280 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1281 }
1054 else 1282 else
1055#endif 1283# endif
1056 { 1284 {
1057 while (pipe (evpipe)) 1285 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1286 ev_syserr ("(libev) error creating signal/async pipe");
1059 1287
1060 fd_intern (evpipe [0]); 1288 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1289 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1290 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1291 }
1064 1292
1065 ev_io_start (EV_A_ &pipeev); 1293 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1294 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1295 }
1068} 1296}
1069 1297
1070inline_size void 1298inline_size void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1300{
1073 if (!*flag) 1301 if (!*flag)
1074 { 1302 {
1075 int old_errno = errno; /* save errno because write might clobber it */ 1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
1076 1305
1077 *flag = 1; 1306 *flag = 1;
1078 1307
1079#if EV_USE_EVENTFD 1308#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1309 if (evfd >= 0)
… …
1082 uint64_t counter = 1; 1311 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1312 write (evfd, &counter, sizeof (uint64_t));
1084 } 1313 }
1085 else 1314 else
1086#endif 1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1321 write (evpipe [1], &dummy, 1);
1088 1322
1089 errno = old_errno; 1323 errno = old_errno;
1090 } 1324 }
1091} 1325}
1092 1326
1327/* called whenever the libev signal pipe */
1328/* got some events (signal, async) */
1093static void 1329static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1330pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1331{
1332 int i;
1333
1096#if EV_USE_EVENTFD 1334#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1335 if (evfd >= 0)
1098 { 1336 {
1099 uint64_t counter; 1337 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1338 read (evfd, &counter, sizeof (uint64_t));
1101 } 1339 }
1102 else 1340 else
1103#endif 1341#endif
1104 { 1342 {
1105 char dummy; 1343 char dummy;
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1345 read (evpipe [0], &dummy, 1);
1107 } 1346 }
1108 1347
1109 if (gotsig && ev_is_default_loop (EV_A)) 1348 if (sig_pending)
1110 { 1349 {
1111 int signum; 1350 sig_pending = 0;
1112 gotsig = 0;
1113 1351
1114 for (signum = signalmax; signum--; ) 1352 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 1353 if (expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 1354 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1355 }
1118 1356
1119#if EV_ASYNC_ENABLE 1357#if EV_ASYNC_ENABLE
1120 if (gotasync) 1358 if (async_pending)
1121 { 1359 {
1122 int i; 1360 async_pending = 0;
1123 gotasync = 0;
1124 1361
1125 for (i = asynccnt; i--; ) 1362 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1363 if (asyncs [i]->sent)
1127 { 1364 {
1128 asyncs [i]->sent = 0; 1365 asyncs [i]->sent = 0;
… …
1132#endif 1369#endif
1133} 1370}
1134 1371
1135/*****************************************************************************/ 1372/*****************************************************************************/
1136 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
1137static void 1388static void
1138ev_sighandler (int signum) 1389ev_sighandler (int signum)
1139{ 1390{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1391#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
1146#endif 1393#endif
1147 1394
1148 signals [signum - 1].gotsig = 1; 1395 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1396}
1151 1397
1152void noinline 1398void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
1154{ 1400{
1155 WL w; 1401 WL w;
1156 1402
1403 if (expect_false (signum <= 0 || signum > EV_NSIG))
1404 return;
1405
1406 --signum;
1407
1157#if EV_MULTIPLICITY 1408#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1409 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1410 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1411
1161 --signum; 1412 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1413 return;
1414#endif
1165 1415
1166 signals [signum].gotsig = 0; 1416 signals [signum].pending = 0;
1167 1417
1168 for (w = signals [signum].head; w; w = w->next) 1418 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1419 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1420}
1171 1421
1422#if EV_USE_SIGNALFD
1423static void
1424sigfdcb (EV_P_ ev_io *iow, int revents)
1425{
1426 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1427
1428 for (;;)
1429 {
1430 ssize_t res = read (sigfd, si, sizeof (si));
1431
1432 /* not ISO-C, as res might be -1, but works with SuS */
1433 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1434 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1435
1436 if (res < (ssize_t)sizeof (si))
1437 break;
1438 }
1439}
1440#endif
1441
1442#endif
1443
1172/*****************************************************************************/ 1444/*****************************************************************************/
1173 1445
1446#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1447static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1448
1178static ev_signal childev; 1449static ev_signal childev;
1179 1450
1180#ifndef WIFCONTINUED 1451#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1452# define WIFCONTINUED(status) 0
1182#endif 1453#endif
1183 1454
1455/* handle a single child status event */
1184inline_speed void 1456inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1457child_reap (EV_P_ int chain, int pid, int status)
1186{ 1458{
1187 ev_child *w; 1459 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1460 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1461
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1462 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1463 {
1192 if ((w->pid == pid || !w->pid) 1464 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1465 && (!traced || (w->flags & 1)))
1194 { 1466 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1467 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1474
1203#ifndef WCONTINUED 1475#ifndef WCONTINUED
1204# define WCONTINUED 0 1476# define WCONTINUED 0
1205#endif 1477#endif
1206 1478
1479/* called on sigchld etc., calls waitpid */
1207static void 1480static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1481childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1482{
1210 int pid, status; 1483 int pid, status;
1211 1484
… …
1219 /* make sure we are called again until all children have been reaped */ 1492 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1493 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1494 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1495
1223 child_reap (EV_A_ pid, pid, status); 1496 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1497 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1498 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1499}
1227 1500
1228#endif 1501#endif
1229 1502
1230/*****************************************************************************/ 1503/*****************************************************************************/
1231 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1232#if EV_USE_PORT 1508#if EV_USE_PORT
1233# include "ev_port.c" 1509# include "ev_port.c"
1234#endif 1510#endif
1235#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
… …
1296#ifdef __APPLE__ 1572#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1573 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1574 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1575 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1576#endif
1577#ifdef __FreeBSD__
1578 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1579#endif
1301 1580
1302 return flags; 1581 return flags;
1303} 1582}
1304 1583
1305unsigned int 1584unsigned int
1306ev_embeddable_backends (void) 1585ev_embeddable_backends (void)
1307{ 1586{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 1588
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1589 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 1591 flags &= ~EVBACKEND_EPOLL;
1313 1592
1314 return flags; 1593 return flags;
1315} 1594}
1316 1595
1317unsigned int 1596unsigned int
1318ev_backend (EV_P) 1597ev_backend (EV_P)
1319{ 1598{
1320 return backend; 1599 return backend;
1321} 1600}
1322 1601
1602#if EV_FEATURE_API
1323unsigned int 1603unsigned int
1324ev_loop_count (EV_P) 1604ev_iteration (EV_P)
1325{ 1605{
1326 return loop_count; 1606 return loop_count;
1327} 1607}
1328 1608
1609unsigned int
1610ev_depth (EV_P)
1611{
1612 return loop_depth;
1613}
1614
1329void 1615void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1616ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1617{
1332 io_blocktime = interval; 1618 io_blocktime = interval;
1333} 1619}
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1622ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1623{
1338 timeout_blocktime = interval; 1624 timeout_blocktime = interval;
1339} 1625}
1340 1626
1627void
1628ev_set_userdata (EV_P_ void *data)
1629{
1630 userdata = data;
1631}
1632
1633void *
1634ev_userdata (EV_P)
1635{
1636 return userdata;
1637}
1638
1639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1640{
1641 invoke_cb = invoke_pending_cb;
1642}
1643
1644void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1645{
1646 release_cb = release;
1647 acquire_cb = acquire;
1648}
1649#endif
1650
1651/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1652static void noinline
1342loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1343{ 1654{
1344 if (!backend) 1655 if (!backend)
1345 { 1656 {
1657 origflags = flags;
1658
1346#if EV_USE_REALTIME 1659#if EV_USE_REALTIME
1347 if (!have_realtime) 1660 if (!have_realtime)
1348 { 1661 {
1349 struct timespec ts; 1662 struct timespec ts;
1350 1663
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1674 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1675 have_monotonic = 1;
1363 } 1676 }
1364#endif 1677#endif
1365 1678
1679 /* pid check not overridable via env */
1680#ifndef _WIN32
1681 if (flags & EVFLAG_FORKCHECK)
1682 curpid = getpid ();
1683#endif
1684
1685 if (!(flags & EVFLAG_NOENV)
1686 && !enable_secure ()
1687 && getenv ("LIBEV_FLAGS"))
1688 flags = atoi (getenv ("LIBEV_FLAGS"));
1689
1366 ev_rt_now = ev_time (); 1690 ev_rt_now = ev_time ();
1367 mn_now = get_clock (); 1691 mn_now = get_clock ();
1368 now_floor = mn_now; 1692 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now; 1693 rtmn_diff = ev_rt_now - mn_now;
1694#if EV_FEATURE_API
1695 invoke_cb = ev_invoke_pending;
1696#endif
1370 1697
1371 io_blocktime = 0.; 1698 io_blocktime = 0.;
1372 timeout_blocktime = 0.; 1699 timeout_blocktime = 0.;
1373 backend = 0; 1700 backend = 0;
1374 backend_fd = -1; 1701 backend_fd = -1;
1375 gotasync = 0; 1702 sig_pending = 0;
1703#if EV_ASYNC_ENABLE
1704 async_pending = 0;
1705#endif
1376#if EV_USE_INOTIFY 1706#if EV_USE_INOTIFY
1377 fs_fd = -2; 1707 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378#endif 1708#endif
1379 1709#if EV_USE_SIGNALFD
1380 /* pid check not overridable via env */ 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid ();
1384#endif 1711#endif
1385 1712
1386 if (!(flags & EVFLAG_NOENV) 1713 if (!(flags & EVBACKEND_MASK))
1387 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS"));
1390
1391 if (!(flags & 0x0000ffffU))
1392 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1393 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1394#if EV_USE_PORT 1719#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 1721#endif
1397#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 1730#endif
1406#if EV_USE_SELECT 1731#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1732 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1733#endif
1409 1734
1735 ev_prepare_init (&pending_w, pendingcb);
1736
1737#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1738 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1739 ev_set_priority (&pipe_w, EV_MAXPRI);
1740#endif
1412 } 1741 }
1413} 1742}
1414 1743
1415static void noinline 1744/* free up a loop structure */
1745void
1416loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1417{ 1747{
1418 int i; 1748 int i;
1419 1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1772
1420 if (ev_is_active (&pipeev)) 1773 if (ev_is_active (&pipe_w))
1421 { 1774 {
1422 ev_ref (EV_A); /* signal watcher */ 1775 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1777
1425#if EV_USE_EVENTFD 1778#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1779 if (evfd >= 0)
1427 close (evfd); 1780 close (evfd);
1428#endif 1781#endif
1429 1782
1430 if (evpipe [0] >= 0) 1783 if (evpipe [0] >= 0)
1431 { 1784 {
1432 close (evpipe [0]); 1785 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1786 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1787 }
1435 } 1788 }
1789
1790#if EV_USE_SIGNALFD
1791 if (ev_is_active (&sigfd_w))
1792 close (sigfd);
1793#endif
1436 1794
1437#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1796 if (fs_fd >= 0)
1439 close (fs_fd); 1797 close (fs_fd);
1440#endif 1798#endif
1441 1799
1442 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1443 close (backend_fd); 1801 close (backend_fd);
1444 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1445#if EV_USE_PORT 1806#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 1808#endif
1448#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 1825#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 1826 array_free (idle, [i]);
1466#endif 1827#endif
1467 } 1828 }
1468 1829
1469 ev_free (anfds); anfdmax = 0; 1830 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 1831
1471 /* have to use the microsoft-never-gets-it-right macro */ 1832 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 1833 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 1834 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 1835 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1477#endif 1838#endif
1478#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1480#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1481 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1485#endif 1849#endif
1486 1850
1487 backend = 0; 1851 backend = 0;
1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1488} 1861}
1489 1862
1490#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1492#endif 1865#endif
… …
1505#endif 1878#endif
1506#if EV_USE_INOTIFY 1879#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 1880 infy_fork (EV_A);
1508#endif 1881#endif
1509 1882
1510 if (ev_is_active (&pipeev)) 1883 if (ev_is_active (&pipe_w))
1511 { 1884 {
1512 /* this "locks" the handlers against writing to the pipe */ 1885 /* this "locks" the handlers against writing to the pipe */
1513 /* while we modify the fd vars */ 1886 /* while we modify the fd vars */
1514 gotsig = 1; 1887 sig_pending = 1;
1515#if EV_ASYNC_ENABLE 1888#if EV_ASYNC_ENABLE
1516 gotasync = 1; 1889 async_pending = 1;
1517#endif 1890#endif
1518 1891
1519 ev_ref (EV_A); 1892 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 1893 ev_io_stop (EV_A_ &pipe_w);
1521 1894
1522#if EV_USE_EVENTFD 1895#if EV_USE_EVENTFD
1523 if (evfd >= 0) 1896 if (evfd >= 0)
1524 close (evfd); 1897 close (evfd);
1525#endif 1898#endif
1526 1899
1527 if (evpipe [0] >= 0) 1900 if (evpipe [0] >= 0)
1528 { 1901 {
1529 close (evpipe [0]); 1902 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 1903 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 1904 }
1532 1905
1906#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 1907 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 1908 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 1909 pipecb (EV_A_ &pipe_w, EV_READ);
1910#endif
1536 } 1911 }
1537 1912
1538 postfork = 0; 1913 postfork = 0;
1539} 1914}
1540 1915
1541#if EV_MULTIPLICITY 1916#if EV_MULTIPLICITY
1542 1917
1543struct ev_loop * 1918struct ev_loop *
1544ev_loop_new (unsigned int flags) 1919ev_loop_new (unsigned int flags)
1545{ 1920{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1921 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 1922
1548 memset (loop, 0, sizeof (struct ev_loop)); 1923 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1551 1925
1552 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1553 return loop; 1927 return EV_A;
1554 1928
1929 ev_free (EV_A);
1555 return 0; 1930 return 0;
1556} 1931}
1557 1932
1558void 1933#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 1934
1571#if EV_VERIFY 1935#if EV_VERIFY
1572static void noinline 1936static void noinline
1573verify_watcher (EV_P_ W w) 1937verify_watcher (EV_P_ W w)
1574{ 1938{
… …
1602 verify_watcher (EV_A_ ws [cnt]); 1966 verify_watcher (EV_A_ ws [cnt]);
1603 } 1967 }
1604} 1968}
1605#endif 1969#endif
1606 1970
1971#if EV_FEATURE_API
1607void 1972void
1608ev_loop_verify (EV_P) 1973ev_verify (EV_P)
1609{ 1974{
1610#if EV_VERIFY 1975#if EV_VERIFY
1611 int i; 1976 int i;
1612 WL w; 1977 WL w;
1613 1978
… …
1647#if EV_FORK_ENABLE 2012#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2013 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2014 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2015#endif
1651 2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
1652#if EV_ASYNC_ENABLE 2022#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2023 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2025#endif
1656 2026
2027#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2028 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2029 array_verify (EV_A_ (W *)prepares, preparecnt);
2030#endif
1659 2031
2032#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2033 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2034 array_verify (EV_A_ (W *)checks, checkcnt);
2035#endif
1662 2036
1663# if 0 2037# if 0
2038#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2039 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2040 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2041#endif
1666# endif 2042# endif
1667#endif 2043#endif
1668} 2044}
1669 2045#endif
1670#endif /* multiplicity */
1671 2046
1672#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1673struct ev_loop * 2048struct ev_loop *
1674ev_default_loop_init (unsigned int flags)
1675#else 2049#else
1676int 2050int
2051#endif
1677ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1678#endif
1679{ 2053{
1680 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
1681 { 2055 {
1682#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2058#else
1685 ev_default_loop_ptr = 1; 2059 ev_default_loop_ptr = 1;
1686#endif 2060#endif
1687 2061
1688 loop_init (EV_A_ flags); 2062 loop_init (EV_A_ flags);
1689 2063
1690 if (ev_backend (EV_A)) 2064 if (ev_backend (EV_A))
1691 { 2065 {
1692#ifndef _WIN32 2066#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2067 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2068 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2069 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2070 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2071#endif
… …
1702 2076
1703 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
1704} 2078}
1705 2079
1706void 2080void
1707ev_default_destroy (void) 2081ev_loop_fork (EV_P)
1708{ 2082{
1709#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
1731} 2084}
1732 2085
1733/*****************************************************************************/ 2086/*****************************************************************************/
1734 2087
1735void 2088void
1736ev_invoke (EV_P_ void *w, int revents) 2089ev_invoke (EV_P_ void *w, int revents)
1737{ 2090{
1738 EV_CB_INVOKE ((W)w, revents); 2091 EV_CB_INVOKE ((W)w, revents);
1739} 2092}
1740 2093
1741inline_speed void 2094unsigned int
1742call_pending (EV_P) 2095ev_pending_count (EV_P)
2096{
2097 int pri;
2098 unsigned int count = 0;
2099
2100 for (pri = NUMPRI; pri--; )
2101 count += pendingcnt [pri];
2102
2103 return count;
2104}
2105
2106void noinline
2107ev_invoke_pending (EV_P)
1743{ 2108{
1744 int pri; 2109 int pri;
1745 2110
1746 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
1748 { 2113 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2115
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 2116 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2117 /* ^ this is no longer true, as pending_w could be here */
1754 2118
1755 p->w->pending = 0; 2119 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2120 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2121 EV_FREQUENT_CHECK;
1758 }
1759 } 2122 }
1760} 2123}
1761 2124
1762#if EV_IDLE_ENABLE 2125#if EV_IDLE_ENABLE
2126/* make idle watchers pending. this handles the "call-idle */
2127/* only when higher priorities are idle" logic */
1763inline_size void 2128inline_size void
1764idle_reify (EV_P) 2129idle_reify (EV_P)
1765{ 2130{
1766 if (expect_false (idleall)) 2131 if (expect_false (idleall))
1767 { 2132 {
… …
1780 } 2145 }
1781 } 2146 }
1782} 2147}
1783#endif 2148#endif
1784 2149
2150/* make timers pending */
1785inline_size void 2151inline_size void
1786timers_reify (EV_P) 2152timers_reify (EV_P)
1787{ 2153{
1788 EV_FREQUENT_CHECK; 2154 EV_FREQUENT_CHECK;
1789 2155
… …
1813 EV_FREQUENT_CHECK; 2179 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2180 feed_reverse (EV_A_ (W)w);
1815 } 2181 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2182 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2183
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2184 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2185 }
1820} 2186}
1821 2187
1822#if EV_PERIODIC_ENABLE 2188#if EV_PERIODIC_ENABLE
2189/* make periodics pending */
1823inline_size void 2190inline_size void
1824periodics_reify (EV_P) 2191periodics_reify (EV_P)
1825{ 2192{
1826 EV_FREQUENT_CHECK; 2193 EV_FREQUENT_CHECK;
1827 2194
… …
1874 2241
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2242 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2243 }
1877} 2244}
1878 2245
2246/* simply recalculate all periodics */
2247/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2248static void noinline
1880periodics_reschedule (EV_P) 2249periodics_reschedule (EV_P)
1881{ 2250{
1882 int i; 2251 int i;
1883 2252
… …
1896 2265
1897 reheap (periodics, periodiccnt); 2266 reheap (periodics, periodiccnt);
1898} 2267}
1899#endif 2268#endif
1900 2269
2270/* adjust all timers by a given offset */
1901static void noinline 2271static void noinline
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2272timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2273{
1904 int i; 2274 int i;
1905 2275
… …
1909 ANHE_w (*he)->at += adjust; 2279 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2280 ANHE_at_cache (*he);
1911 } 2281 }
1912} 2282}
1913 2283
2284/* fetch new monotonic and realtime times from the kernel */
2285/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2286inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2287time_update (EV_P_ ev_tstamp max_block)
1916{ 2288{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2289#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2290 if (expect_true (have_monotonic))
1921 { 2291 {
2292 int i;
1922 ev_tstamp odiff = rtmn_diff; 2293 ev_tstamp odiff = rtmn_diff;
1923 2294
1924 mn_now = get_clock (); 2295 mn_now = get_clock ();
1925 2296
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2297 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1976 2347
1977 mn_now = ev_rt_now; 2348 mn_now = ev_rt_now;
1978 } 2349 }
1979} 2350}
1980 2351
1981static int loop_done;
1982
1983void 2352void
1984ev_loop (EV_P_ int flags) 2353ev_run (EV_P_ int flags)
1985{ 2354{
2355#if EV_FEATURE_API
2356 ++loop_depth;
2357#endif
2358
2359 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2360
1986 loop_done = EVUNLOOP_CANCEL; 2361 loop_done = EVBREAK_CANCEL;
1987 2362
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2363 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2364
1990 do 2365 do
1991 { 2366 {
1992#if EV_VERIFY >= 2 2367#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2368 ev_verify (EV_A);
1994#endif 2369#endif
1995 2370
1996#ifndef _WIN32 2371#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2372 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2373 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2381 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2382 if (expect_false (postfork))
2008 if (forkcnt) 2383 if (forkcnt)
2009 { 2384 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2385 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2386 EV_INVOKE_PENDING;
2012 } 2387 }
2013#endif 2388#endif
2014 2389
2390#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2391 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2392 if (expect_false (preparecnt))
2017 { 2393 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2394 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2395 EV_INVOKE_PENDING;
2020 } 2396 }
2397#endif
2398
2399 if (expect_false (loop_done))
2400 break;
2021 2401
2022 /* we might have forked, so reify kernel state if necessary */ 2402 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2403 if (expect_false (postfork))
2024 loop_fork (EV_A); 2404 loop_fork (EV_A);
2025 2405
… …
2029 /* calculate blocking time */ 2409 /* calculate blocking time */
2030 { 2410 {
2031 ev_tstamp waittime = 0.; 2411 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2412 ev_tstamp sleeptime = 0.;
2033 2413
2414 /* remember old timestamp for io_blocktime calculation */
2415 ev_tstamp prev_mn_now = mn_now;
2416
2417 /* update time to cancel out callback processing overhead */
2418 time_update (EV_A_ 1e100);
2419
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2420 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2035 { 2421 {
2036 /* update time to cancel out callback processing overhead */ 2422 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 2423
2039 if (timercnt) 2424 if (timercnt)
2040 { 2425 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2426 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2042 if (waittime > to) waittime = to; 2427 if (waittime > to) waittime = to;
… …
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2433 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2049 if (waittime > to) waittime = to; 2434 if (waittime > to) waittime = to;
2050 } 2435 }
2051#endif 2436#endif
2052 2437
2438 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 2439 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 2440 waittime = timeout_blocktime;
2055 2441
2056 sleeptime = waittime - backend_fudge; 2442 /* extra check because io_blocktime is commonly 0 */
2057
2058 if (expect_true (sleeptime > io_blocktime)) 2443 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 2444 {
2445 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2446
2447 if (sleeptime > waittime - backend_fudge)
2448 sleeptime = waittime - backend_fudge;
2449
2450 if (expect_true (sleeptime > 0.))
2451 {
2063 ev_sleep (sleeptime); 2452 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 2453 waittime -= sleeptime;
2454 }
2065 } 2455 }
2066 } 2456 }
2067 2457
2458#if EV_FEATURE_API
2068 ++loop_count; 2459 ++loop_count;
2460#endif
2461 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 2462 backend_poll (EV_A_ waittime);
2463 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2070 2464
2071 /* update ev_rt_now, do magic */ 2465 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 2466 time_update (EV_A_ waittime + sleeptime);
2073 } 2467 }
2074 2468
… …
2081#if EV_IDLE_ENABLE 2475#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 2476 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 2477 idle_reify (EV_A);
2084#endif 2478#endif
2085 2479
2480#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 2481 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 2482 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2483 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2484#endif
2089 2485
2090 call_pending (EV_A); 2486 EV_INVOKE_PENDING;
2091 } 2487 }
2092 while (expect_true ( 2488 while (expect_true (
2093 activecnt 2489 activecnt
2094 && !loop_done 2490 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2491 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 2492 ));
2097 2493
2098 if (loop_done == EVUNLOOP_ONE) 2494 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 2495 loop_done = EVBREAK_CANCEL;
2100}
2101 2496
2497#if EV_FEATURE_API
2498 --loop_depth;
2499#endif
2500}
2501
2102void 2502void
2103ev_unloop (EV_P_ int how) 2503ev_break (EV_P_ int how)
2104{ 2504{
2105 loop_done = how; 2505 loop_done = how;
2106} 2506}
2107 2507
2108void 2508void
… …
2133ev_resume (EV_P) 2533ev_resume (EV_P)
2134{ 2534{
2135 ev_tstamp mn_prev = mn_now; 2535 ev_tstamp mn_prev = mn_now;
2136 2536
2137 ev_now_update (EV_A); 2537 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev); 2538 timers_reschedule (EV_A_ mn_now - mn_prev);
2539#if EV_PERIODIC_ENABLE
2540 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 2541 periodics_reschedule (EV_A);
2542#endif
2141} 2543}
2142 2544
2143/*****************************************************************************/ 2545/*****************************************************************************/
2546/* singly-linked list management, used when the expected list length is short */
2144 2547
2145inline_size void 2548inline_size void
2146wlist_add (WL *head, WL elem) 2549wlist_add (WL *head, WL elem)
2147{ 2550{
2148 elem->next = *head; 2551 elem->next = *head;
… …
2152inline_size void 2555inline_size void
2153wlist_del (WL *head, WL elem) 2556wlist_del (WL *head, WL elem)
2154{ 2557{
2155 while (*head) 2558 while (*head)
2156 { 2559 {
2157 if (*head == elem) 2560 if (expect_true (*head == elem))
2158 { 2561 {
2159 *head = elem->next; 2562 *head = elem->next;
2160 return; 2563 break;
2161 } 2564 }
2162 2565
2163 head = &(*head)->next; 2566 head = &(*head)->next;
2164 } 2567 }
2165} 2568}
2166 2569
2570/* internal, faster, version of ev_clear_pending */
2167inline_speed void 2571inline_speed void
2168clear_pending (EV_P_ W w) 2572clear_pending (EV_P_ W w)
2169{ 2573{
2170 if (w->pending) 2574 if (w->pending)
2171 { 2575 {
2172 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2576 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173 w->pending = 0; 2577 w->pending = 0;
2174 } 2578 }
2175} 2579}
2176 2580
2177int 2581int
… …
2181 int pending = w_->pending; 2585 int pending = w_->pending;
2182 2586
2183 if (expect_true (pending)) 2587 if (expect_true (pending))
2184 { 2588 {
2185 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2589 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2590 p->w = (W)&pending_w;
2186 w_->pending = 0; 2591 w_->pending = 0;
2187 p->w = 0;
2188 return p->events; 2592 return p->events;
2189 } 2593 }
2190 else 2594 else
2191 return 0; 2595 return 0;
2192} 2596}
2193 2597
2194inline_size void 2598inline_size void
2195pri_adjust (EV_P_ W w) 2599pri_adjust (EV_P_ W w)
2196{ 2600{
2197 int pri = w->priority; 2601 int pri = ev_priority (w);
2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2602 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2603 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200 w->priority = pri; 2604 ev_set_priority (w, pri);
2201} 2605}
2202 2606
2203inline_speed void 2607inline_speed void
2204ev_start (EV_P_ W w, int active) 2608ev_start (EV_P_ W w, int active)
2205{ 2609{
… …
2224 2628
2225 if (expect_false (ev_is_active (w))) 2629 if (expect_false (ev_is_active (w)))
2226 return; 2630 return;
2227 2631
2228 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2632 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2229 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2633 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230 2634
2231 EV_FREQUENT_CHECK; 2635 EV_FREQUENT_CHECK;
2232 2636
2233 ev_start (EV_A_ (W)w, 1); 2637 ev_start (EV_A_ (W)w, 1);
2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2638 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2235 wlist_add (&anfds[fd].head, (WL)w); 2639 wlist_add (&anfds[fd].head, (WL)w);
2236 2640
2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2641 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238 w->events &= ~EV__IOFDSET; 2642 w->events &= ~EV__IOFDSET;
2239 2643
2240 EV_FREQUENT_CHECK; 2644 EV_FREQUENT_CHECK;
2241} 2645}
2242 2646
… …
2252 EV_FREQUENT_CHECK; 2656 EV_FREQUENT_CHECK;
2253 2657
2254 wlist_del (&anfds[w->fd].head, (WL)w); 2658 wlist_del (&anfds[w->fd].head, (WL)w);
2255 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
2256 2660
2257 fd_change (EV_A_ w->fd, 1); 2661 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2258 2662
2259 EV_FREQUENT_CHECK; 2663 EV_FREQUENT_CHECK;
2260} 2664}
2261 2665
2262void noinline 2666void noinline
… …
2304 timers [active] = timers [timercnt + HEAP0]; 2708 timers [active] = timers [timercnt + HEAP0];
2305 adjustheap (timers, timercnt, active); 2709 adjustheap (timers, timercnt, active);
2306 } 2710 }
2307 } 2711 }
2308 2712
2309 EV_FREQUENT_CHECK;
2310
2311 ev_at (w) -= mn_now; 2713 ev_at (w) -= mn_now;
2312 2714
2313 ev_stop (EV_A_ (W)w); 2715 ev_stop (EV_A_ (W)w);
2716
2717 EV_FREQUENT_CHECK;
2314} 2718}
2315 2719
2316void noinline 2720void noinline
2317ev_timer_again (EV_P_ ev_timer *w) 2721ev_timer_again (EV_P_ ev_timer *w)
2318{ 2722{
… …
2336 } 2740 }
2337 2741
2338 EV_FREQUENT_CHECK; 2742 EV_FREQUENT_CHECK;
2339} 2743}
2340 2744
2745ev_tstamp
2746ev_timer_remaining (EV_P_ ev_timer *w)
2747{
2748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2749}
2750
2341#if EV_PERIODIC_ENABLE 2751#if EV_PERIODIC_ENABLE
2342void noinline 2752void noinline
2343ev_periodic_start (EV_P_ ev_periodic *w) 2753ev_periodic_start (EV_P_ ev_periodic *w)
2344{ 2754{
2345 if (expect_false (ev_is_active (w))) 2755 if (expect_false (ev_is_active (w)))
… …
2391 periodics [active] = periodics [periodiccnt + HEAP0]; 2801 periodics [active] = periodics [periodiccnt + HEAP0];
2392 adjustheap (periodics, periodiccnt, active); 2802 adjustheap (periodics, periodiccnt, active);
2393 } 2803 }
2394 } 2804 }
2395 2805
2396 EV_FREQUENT_CHECK;
2397
2398 ev_stop (EV_A_ (W)w); 2806 ev_stop (EV_A_ (W)w);
2807
2808 EV_FREQUENT_CHECK;
2399} 2809}
2400 2810
2401void noinline 2811void noinline
2402ev_periodic_again (EV_P_ ev_periodic *w) 2812ev_periodic_again (EV_P_ ev_periodic *w)
2403{ 2813{
… …
2409 2819
2410#ifndef SA_RESTART 2820#ifndef SA_RESTART
2411# define SA_RESTART 0 2821# define SA_RESTART 0
2412#endif 2822#endif
2413 2823
2824#if EV_SIGNAL_ENABLE
2825
2414void noinline 2826void noinline
2415ev_signal_start (EV_P_ ev_signal *w) 2827ev_signal_start (EV_P_ ev_signal *w)
2416{ 2828{
2417#if EV_MULTIPLICITY
2418 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2419#endif
2420 if (expect_false (ev_is_active (w))) 2829 if (expect_false (ev_is_active (w)))
2421 return; 2830 return;
2422 2831
2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2832 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2424 2833
2425 evpipe_init (EV_A); 2834#if EV_MULTIPLICITY
2835 assert (("libev: a signal must not be attached to two different loops",
2836 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2426 2837
2427 EV_FREQUENT_CHECK; 2838 signals [w->signum - 1].loop = EV_A;
2839#endif
2428 2840
2841 EV_FREQUENT_CHECK;
2842
2843#if EV_USE_SIGNALFD
2844 if (sigfd == -2)
2429 { 2845 {
2430#ifndef _WIN32 2846 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431 sigset_t full, prev; 2847 if (sigfd < 0 && errno == EINVAL)
2432 sigfillset (&full); 2848 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433 sigprocmask (SIG_SETMASK, &full, &prev);
2434#endif
2435 2849
2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2850 if (sigfd >= 0)
2851 {
2852 fd_intern (sigfd); /* doing it twice will not hurt */
2437 2853
2438#ifndef _WIN32 2854 sigemptyset (&sigfd_set);
2439 sigprocmask (SIG_SETMASK, &prev, 0); 2855
2440#endif 2856 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2857 ev_set_priority (&sigfd_w, EV_MAXPRI);
2858 ev_io_start (EV_A_ &sigfd_w);
2859 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2860 }
2441 } 2861 }
2862
2863 if (sigfd >= 0)
2864 {
2865 /* TODO: check .head */
2866 sigaddset (&sigfd_set, w->signum);
2867 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2868
2869 signalfd (sigfd, &sigfd_set, 0);
2870 }
2871#endif
2442 2872
2443 ev_start (EV_A_ (W)w, 1); 2873 ev_start (EV_A_ (W)w, 1);
2444 wlist_add (&signals [w->signum - 1].head, (WL)w); 2874 wlist_add (&signals [w->signum - 1].head, (WL)w);
2445 2875
2446 if (!((WL)w)->next) 2876 if (!((WL)w)->next)
2877# if EV_USE_SIGNALFD
2878 if (sigfd < 0) /*TODO*/
2879# endif
2447 { 2880 {
2448#if _WIN32 2881# ifdef _WIN32
2882 evpipe_init (EV_A);
2883
2449 signal (w->signum, ev_sighandler); 2884 signal (w->signum, ev_sighandler);
2450#else 2885# else
2451 struct sigaction sa; 2886 struct sigaction sa;
2887
2888 evpipe_init (EV_A);
2889
2452 sa.sa_handler = ev_sighandler; 2890 sa.sa_handler = ev_sighandler;
2453 sigfillset (&sa.sa_mask); 2891 sigfillset (&sa.sa_mask);
2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455 sigaction (w->signum, &sa, 0); 2893 sigaction (w->signum, &sa, 0);
2894
2895 if (origflags & EVFLAG_NOSIGMASK)
2896 {
2897 sigemptyset (&sa.sa_mask);
2898 sigaddset (&sa.sa_mask, w->signum);
2899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2900 }
2456#endif 2901#endif
2457 } 2902 }
2458 2903
2459 EV_FREQUENT_CHECK; 2904 EV_FREQUENT_CHECK;
2460} 2905}
2461 2906
2462void noinline 2907void noinline
… …
2470 2915
2471 wlist_del (&signals [w->signum - 1].head, (WL)w); 2916 wlist_del (&signals [w->signum - 1].head, (WL)w);
2472 ev_stop (EV_A_ (W)w); 2917 ev_stop (EV_A_ (W)w);
2473 2918
2474 if (!signals [w->signum - 1].head) 2919 if (!signals [w->signum - 1].head)
2920 {
2921#if EV_MULTIPLICITY
2922 signals [w->signum - 1].loop = 0; /* unattach from signal */
2923#endif
2924#if EV_USE_SIGNALFD
2925 if (sigfd >= 0)
2926 {
2927 sigset_t ss;
2928
2929 sigemptyset (&ss);
2930 sigaddset (&ss, w->signum);
2931 sigdelset (&sigfd_set, w->signum);
2932
2933 signalfd (sigfd, &sigfd_set, 0);
2934 sigprocmask (SIG_UNBLOCK, &ss, 0);
2935 }
2936 else
2937#endif
2475 signal (w->signum, SIG_DFL); 2938 signal (w->signum, SIG_DFL);
2939 }
2476 2940
2477 EV_FREQUENT_CHECK; 2941 EV_FREQUENT_CHECK;
2478} 2942}
2943
2944#endif
2945
2946#if EV_CHILD_ENABLE
2479 2947
2480void 2948void
2481ev_child_start (EV_P_ ev_child *w) 2949ev_child_start (EV_P_ ev_child *w)
2482{ 2950{
2483#if EV_MULTIPLICITY 2951#if EV_MULTIPLICITY
… …
2487 return; 2955 return;
2488 2956
2489 EV_FREQUENT_CHECK; 2957 EV_FREQUENT_CHECK;
2490 2958
2491 ev_start (EV_A_ (W)w, 1); 2959 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2493 2961
2494 EV_FREQUENT_CHECK; 2962 EV_FREQUENT_CHECK;
2495} 2963}
2496 2964
2497void 2965void
… …
2501 if (expect_false (!ev_is_active (w))) 2969 if (expect_false (!ev_is_active (w)))
2502 return; 2970 return;
2503 2971
2504 EV_FREQUENT_CHECK; 2972 EV_FREQUENT_CHECK;
2505 2973
2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2507 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2508 2976
2509 EV_FREQUENT_CHECK; 2977 EV_FREQUENT_CHECK;
2510} 2978}
2979
2980#endif
2511 2981
2512#if EV_STAT_ENABLE 2982#if EV_STAT_ENABLE
2513 2983
2514# ifdef _WIN32 2984# ifdef _WIN32
2515# undef lstat 2985# undef lstat
… …
2521#define MIN_STAT_INTERVAL 0.1074891 2991#define MIN_STAT_INTERVAL 0.1074891
2522 2992
2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524 2994
2525#if EV_USE_INOTIFY 2995#if EV_USE_INOTIFY
2526# define EV_INOTIFY_BUFSIZE 8192 2996
2997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2527 2999
2528static void noinline 3000static void noinline
2529infy_add (EV_P_ ev_stat *w) 3001infy_add (EV_P_ ev_stat *w)
2530{ 3002{
2531 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); 3003 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);
2532 3004
2533 if (w->wd < 0) 3005 if (w->wd >= 0)
3006 {
3007 struct statfs sfs;
3008
3009 /* now local changes will be tracked by inotify, but remote changes won't */
3010 /* unless the filesystem is known to be local, we therefore still poll */
3011 /* also do poll on <2.6.25, but with normal frequency */
3012
3013 if (!fs_2625)
3014 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3015 else if (!statfs (w->path, &sfs)
3016 && (sfs.f_type == 0x1373 /* devfs */
3017 || sfs.f_type == 0xEF53 /* ext2/3 */
3018 || sfs.f_type == 0x3153464a /* jfs */
3019 || sfs.f_type == 0x52654973 /* reiser3 */
3020 || sfs.f_type == 0x01021994 /* tempfs */
3021 || sfs.f_type == 0x58465342 /* xfs */))
3022 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3023 else
3024 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534 { 3025 }
3026 else
3027 {
3028 /* can't use inotify, continue to stat */
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3029 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2536 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2537 3030
2538 /* monitor some parent directory for speedup hints */ 3031 /* if path is not there, monitor some parent directory for speedup hints */
2539 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3032 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2540 /* but an efficiency issue only */ 3033 /* but an efficiency issue only */
2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3034 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542 { 3035 {
2543 char path [4096]; 3036 char path [4096];
… …
2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3052 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560 } 3053 }
2561 } 3054 }
2562 3055
2563 if (w->wd >= 0) 3056 if (w->wd >= 0)
2564 {
2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3057 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2566 3058
2567 /* now local changes will be tracked by inotify, but remote changes won't */ 3059 /* now re-arm timer, if required */
2568 /* unless the filesystem it known to be local, we therefore still poll */ 3060 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2569 /* also do poll on <2.6.25, but with normal frequency */
2570 struct statfs sfs;
2571
2572 if (fs_2625 && !statfs (w->path, &sfs))
2573 if (sfs.f_type == 0x1373 /* devfs */
2574 || sfs.f_type == 0xEF53 /* ext2/3 */
2575 || sfs.f_type == 0x3153464a /* jfs */
2576 || sfs.f_type == 0x52654973 /* reiser3 */
2577 || sfs.f_type == 0x01021994 /* tempfs */
2578 || sfs.f_type == 0x58465342 /* xfs */)
2579 return;
2580
2581 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2582 ev_timer_again (EV_A_ &w->timer); 3061 ev_timer_again (EV_A_ &w->timer);
2583 } 3062 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584} 3063}
2585 3064
2586static void noinline 3065static void noinline
2587infy_del (EV_P_ ev_stat *w) 3066infy_del (EV_P_ ev_stat *w)
2588{ 3067{
… …
2591 3070
2592 if (wd < 0) 3071 if (wd < 0)
2593 return; 3072 return;
2594 3073
2595 w->wd = -2; 3074 w->wd = -2;
2596 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3075 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2597 wlist_del (&fs_hash [slot].head, (WL)w); 3076 wlist_del (&fs_hash [slot].head, (WL)w);
2598 3077
2599 /* remove this watcher, if others are watching it, they will rearm */ 3078 /* remove this watcher, if others are watching it, they will rearm */
2600 inotify_rm_watch (fs_fd, wd); 3079 inotify_rm_watch (fs_fd, wd);
2601} 3080}
… …
2603static void noinline 3082static void noinline
2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3083infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2605{ 3084{
2606 if (slot < 0) 3085 if (slot < 0)
2607 /* overflow, need to check for all hash slots */ 3086 /* overflow, need to check for all hash slots */
2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3087 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2609 infy_wd (EV_A_ slot, wd, ev); 3088 infy_wd (EV_A_ slot, wd, ev);
2610 else 3089 else
2611 { 3090 {
2612 WL w_; 3091 WL w_;
2613 3092
2614 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3093 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2615 { 3094 {
2616 ev_stat *w = (ev_stat *)w_; 3095 ev_stat *w = (ev_stat *)w_;
2617 w_ = w_->next; /* lets us remove this watcher and all before it */ 3096 w_ = w_->next; /* lets us remove this watcher and all before it */
2618 3097
2619 if (w->wd == wd || wd == -1) 3098 if (w->wd == wd || wd == -1)
2620 { 3099 {
2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3100 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2622 { 3101 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3102 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 w->wd = -1; 3103 w->wd = -1;
2625 infy_add (EV_A_ w); /* re-add, no matter what */ 3104 infy_add (EV_A_ w); /* re-add, no matter what */
2626 } 3105 }
2627 3106
2628 stat_timer_cb (EV_A_ &w->timer, 0); 3107 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2633 3112
2634static void 3113static void
2635infy_cb (EV_P_ ev_io *w, int revents) 3114infy_cb (EV_P_ ev_io *w, int revents)
2636{ 3115{
2637 char buf [EV_INOTIFY_BUFSIZE]; 3116 char buf [EV_INOTIFY_BUFSIZE];
2638 struct inotify_event *ev = (struct inotify_event *)buf;
2639 int ofs; 3117 int ofs;
2640 int len = read (fs_fd, buf, sizeof (buf)); 3118 int len = read (fs_fd, buf, sizeof (buf));
2641 3119
2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3120 for (ofs = 0; ofs < len; )
3121 {
3122 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3123 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3124 ofs += sizeof (struct inotify_event) + ev->len;
3125 }
2644} 3126}
2645 3127
2646inline_size void 3128inline_size void
2647check_2625 (EV_P) 3129ev_check_2625 (EV_P)
2648{ 3130{
2649 /* kernels < 2.6.25 are borked 3131 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3132 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */ 3133 */
2652 struct utsname buf; 3134 if (ev_linux_version () < 0x020619)
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return; 3135 return;
2657 3136
2658 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2659 return;
2660
2661 if (major < 2
2662 || (major == 2 && minor < 6)
2663 || (major == 2 && minor == 6 && micro < 25))
2664 return;
2665
2666 fs_2625 = 1; 3137 fs_2625 = 1;
3138}
3139
3140inline_size int
3141infy_newfd (void)
3142{
3143#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3144 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3145 if (fd >= 0)
3146 return fd;
3147#endif
3148 return inotify_init ();
2667} 3149}
2668 3150
2669inline_size void 3151inline_size void
2670infy_init (EV_P) 3152infy_init (EV_P)
2671{ 3153{
2672 if (fs_fd != -2) 3154 if (fs_fd != -2)
2673 return; 3155 return;
2674 3156
2675 fs_fd = -1; 3157 fs_fd = -1;
2676 3158
2677 check_2625 (EV_A); 3159 ev_check_2625 (EV_A);
2678 3160
2679 fs_fd = inotify_init (); 3161 fs_fd = infy_newfd ();
2680 3162
2681 if (fs_fd >= 0) 3163 if (fs_fd >= 0)
2682 { 3164 {
3165 fd_intern (fs_fd);
2683 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3166 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684 ev_set_priority (&fs_w, EV_MAXPRI); 3167 ev_set_priority (&fs_w, EV_MAXPRI);
2685 ev_io_start (EV_A_ &fs_w); 3168 ev_io_start (EV_A_ &fs_w);
3169 ev_unref (EV_A);
2686 } 3170 }
2687} 3171}
2688 3172
2689inline_size void 3173inline_size void
2690infy_fork (EV_P) 3174infy_fork (EV_P)
… …
2692 int slot; 3176 int slot;
2693 3177
2694 if (fs_fd < 0) 3178 if (fs_fd < 0)
2695 return; 3179 return;
2696 3180
3181 ev_ref (EV_A);
3182 ev_io_stop (EV_A_ &fs_w);
2697 close (fs_fd); 3183 close (fs_fd);
2698 fs_fd = inotify_init (); 3184 fs_fd = infy_newfd ();
2699 3185
3186 if (fs_fd >= 0)
3187 {
3188 fd_intern (fs_fd);
3189 ev_io_set (&fs_w, fs_fd, EV_READ);
3190 ev_io_start (EV_A_ &fs_w);
3191 ev_unref (EV_A);
3192 }
3193
2700 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3194 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2701 { 3195 {
2702 WL w_ = fs_hash [slot].head; 3196 WL w_ = fs_hash [slot].head;
2703 fs_hash [slot].head = 0; 3197 fs_hash [slot].head = 0;
2704 3198
2705 while (w_) 3199 while (w_)
… …
2710 w->wd = -1; 3204 w->wd = -1;
2711 3205
2712 if (fs_fd >= 0) 3206 if (fs_fd >= 0)
2713 infy_add (EV_A_ w); /* re-add, no matter what */ 3207 infy_add (EV_A_ w); /* re-add, no matter what */
2714 else 3208 else
3209 {
3210 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3211 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715 ev_timer_again (EV_A_ &w->timer); 3212 ev_timer_again (EV_A_ &w->timer);
3213 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3214 }
2716 } 3215 }
2717 } 3216 }
2718} 3217}
2719 3218
2720#endif 3219#endif
… …
2737static void noinline 3236static void noinline
2738stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3237stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739{ 3238{
2740 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3239 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741 3240
2742 /* we copy this here each the time so that */ 3241 ev_statdata prev = w->attr;
2743 /* prev has the old value when the callback gets invoked */
2744 w->prev = w->attr;
2745 ev_stat_stat (EV_A_ w); 3242 ev_stat_stat (EV_A_ w);
2746 3243
2747 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3244 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748 if ( 3245 if (
2749 w->prev.st_dev != w->attr.st_dev 3246 prev.st_dev != w->attr.st_dev
2750 || w->prev.st_ino != w->attr.st_ino 3247 || prev.st_ino != w->attr.st_ino
2751 || w->prev.st_mode != w->attr.st_mode 3248 || prev.st_mode != w->attr.st_mode
2752 || w->prev.st_nlink != w->attr.st_nlink 3249 || prev.st_nlink != w->attr.st_nlink
2753 || w->prev.st_uid != w->attr.st_uid 3250 || prev.st_uid != w->attr.st_uid
2754 || w->prev.st_gid != w->attr.st_gid 3251 || prev.st_gid != w->attr.st_gid
2755 || w->prev.st_rdev != w->attr.st_rdev 3252 || prev.st_rdev != w->attr.st_rdev
2756 || w->prev.st_size != w->attr.st_size 3253 || prev.st_size != w->attr.st_size
2757 || w->prev.st_atime != w->attr.st_atime 3254 || prev.st_atime != w->attr.st_atime
2758 || w->prev.st_mtime != w->attr.st_mtime 3255 || prev.st_mtime != w->attr.st_mtime
2759 || w->prev.st_ctime != w->attr.st_ctime 3256 || prev.st_ctime != w->attr.st_ctime
2760 ) { 3257 ) {
3258 /* we only update w->prev on actual differences */
3259 /* in case we test more often than invoke the callback, */
3260 /* to ensure that prev is always different to attr */
3261 w->prev = prev;
3262
2761 #if EV_USE_INOTIFY 3263 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
2763 { 3265 {
2764 infy_del (EV_A_ w); 3266 infy_del (EV_A_ w);
2765 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
… …
2790 3292
2791 if (fs_fd >= 0) 3293 if (fs_fd >= 0)
2792 infy_add (EV_A_ w); 3294 infy_add (EV_A_ w);
2793 else 3295 else
2794#endif 3296#endif
3297 {
2795 ev_timer_again (EV_A_ &w->timer); 3298 ev_timer_again (EV_A_ &w->timer);
3299 ev_unref (EV_A);
3300 }
2796 3301
2797 ev_start (EV_A_ (W)w, 1); 3302 ev_start (EV_A_ (W)w, 1);
2798 3303
2799 EV_FREQUENT_CHECK; 3304 EV_FREQUENT_CHECK;
2800} 3305}
… …
2809 EV_FREQUENT_CHECK; 3314 EV_FREQUENT_CHECK;
2810 3315
2811#if EV_USE_INOTIFY 3316#if EV_USE_INOTIFY
2812 infy_del (EV_A_ w); 3317 infy_del (EV_A_ w);
2813#endif 3318#endif
3319
3320 if (ev_is_active (&w->timer))
3321 {
3322 ev_ref (EV_A);
2814 ev_timer_stop (EV_A_ &w->timer); 3323 ev_timer_stop (EV_A_ &w->timer);
3324 }
2815 3325
2816 ev_stop (EV_A_ (W)w); 3326 ev_stop (EV_A_ (W)w);
2817 3327
2818 EV_FREQUENT_CHECK; 3328 EV_FREQUENT_CHECK;
2819} 3329}
… …
2864 3374
2865 EV_FREQUENT_CHECK; 3375 EV_FREQUENT_CHECK;
2866} 3376}
2867#endif 3377#endif
2868 3378
3379#if EV_PREPARE_ENABLE
2869void 3380void
2870ev_prepare_start (EV_P_ ev_prepare *w) 3381ev_prepare_start (EV_P_ ev_prepare *w)
2871{ 3382{
2872 if (expect_false (ev_is_active (w))) 3383 if (expect_false (ev_is_active (w)))
2873 return; 3384 return;
… …
2899 3410
2900 ev_stop (EV_A_ (W)w); 3411 ev_stop (EV_A_ (W)w);
2901 3412
2902 EV_FREQUENT_CHECK; 3413 EV_FREQUENT_CHECK;
2903} 3414}
3415#endif
2904 3416
3417#if EV_CHECK_ENABLE
2905void 3418void
2906ev_check_start (EV_P_ ev_check *w) 3419ev_check_start (EV_P_ ev_check *w)
2907{ 3420{
2908 if (expect_false (ev_is_active (w))) 3421 if (expect_false (ev_is_active (w)))
2909 return; 3422 return;
… …
2935 3448
2936 ev_stop (EV_A_ (W)w); 3449 ev_stop (EV_A_ (W)w);
2937 3450
2938 EV_FREQUENT_CHECK; 3451 EV_FREQUENT_CHECK;
2939} 3452}
3453#endif
2940 3454
2941#if EV_EMBED_ENABLE 3455#if EV_EMBED_ENABLE
2942void noinline 3456void noinline
2943ev_embed_sweep (EV_P_ ev_embed *w) 3457ev_embed_sweep (EV_P_ ev_embed *w)
2944{ 3458{
2945 ev_loop (w->other, EVLOOP_NONBLOCK); 3459 ev_run (w->other, EVRUN_NOWAIT);
2946} 3460}
2947 3461
2948static void 3462static void
2949embed_io_cb (EV_P_ ev_io *io, int revents) 3463embed_io_cb (EV_P_ ev_io *io, int revents)
2950{ 3464{
2951 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3465 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2952 3466
2953 if (ev_cb (w)) 3467 if (ev_cb (w))
2954 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3468 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2955 else 3469 else
2956 ev_loop (w->other, EVLOOP_NONBLOCK); 3470 ev_run (w->other, EVRUN_NOWAIT);
2957} 3471}
2958 3472
2959static void 3473static void
2960embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3474embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961{ 3475{
2962 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3476 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963 3477
2964 { 3478 {
2965 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2966 3480
2967 while (fdchangecnt) 3481 while (fdchangecnt)
2968 { 3482 {
2969 fd_reify (EV_A); 3483 fd_reify (EV_A);
2970 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3484 ev_run (EV_A_ EVRUN_NOWAIT);
2971 } 3485 }
2972 } 3486 }
2973} 3487}
2974 3488
2975static void 3489static void
… …
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3492 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979 3493
2980 ev_embed_stop (EV_A_ w); 3494 ev_embed_stop (EV_A_ w);
2981 3495
2982 { 3496 {
2983 struct ev_loop *loop = w->other; 3497 EV_P = w->other;
2984 3498
2985 ev_loop_fork (EV_A); 3499 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3500 ev_run (EV_A_ EVRUN_NOWAIT);
2987 } 3501 }
2988 3502
2989 ev_embed_start (EV_A_ w); 3503 ev_embed_start (EV_A_ w);
2990} 3504}
2991 3505
… …
3002{ 3516{
3003 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
3004 return; 3518 return;
3005 3519
3006 { 3520 {
3007 struct ev_loop *loop = w->other; 3521 EV_P = w->other;
3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3522 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3009 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3523 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010 } 3524 }
3011 3525
3012 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
… …
3039 3553
3040 ev_io_stop (EV_A_ &w->io); 3554 ev_io_stop (EV_A_ &w->io);
3041 ev_prepare_stop (EV_A_ &w->prepare); 3555 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork); 3556 ev_fork_stop (EV_A_ &w->fork);
3043 3557
3558 ev_stop (EV_A_ (W)w);
3559
3044 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
3045} 3561}
3046#endif 3562#endif
3047 3563
3048#if EV_FORK_ENABLE 3564#if EV_FORK_ENABLE
… …
3081 3597
3082 EV_FREQUENT_CHECK; 3598 EV_FREQUENT_CHECK;
3083} 3599}
3084#endif 3600#endif
3085 3601
3086#if EV_ASYNC_ENABLE 3602#if EV_CLEANUP_ENABLE
3087void 3603void
3088ev_async_start (EV_P_ ev_async *w) 3604ev_cleanup_start (EV_P_ ev_cleanup *w)
3089{ 3605{
3090 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
3091 return; 3607 return;
3608
3609 EV_FREQUENT_CHECK;
3610
3611 ev_start (EV_A_ (W)w, ++cleanupcnt);
3612 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3613 cleanups [cleanupcnt - 1] = w;
3614
3615 /* cleanup watchers should never keep a refcount on the loop */
3616 ev_unref (EV_A);
3617 EV_FREQUENT_CHECK;
3618}
3619
3620void
3621ev_cleanup_stop (EV_P_ ev_cleanup *w)
3622{
3623 clear_pending (EV_A_ (W)w);
3624 if (expect_false (!ev_is_active (w)))
3625 return;
3626
3627 EV_FREQUENT_CHECK;
3628 ev_ref (EV_A);
3629
3630 {
3631 int active = ev_active (w);
3632
3633 cleanups [active - 1] = cleanups [--cleanupcnt];
3634 ev_active (cleanups [active - 1]) = active;
3635 }
3636
3637 ev_stop (EV_A_ (W)w);
3638
3639 EV_FREQUENT_CHECK;
3640}
3641#endif
3642
3643#if EV_ASYNC_ENABLE
3644void
3645ev_async_start (EV_P_ ev_async *w)
3646{
3647 if (expect_false (ev_is_active (w)))
3648 return;
3649
3650 w->sent = 0;
3092 3651
3093 evpipe_init (EV_A); 3652 evpipe_init (EV_A);
3094 3653
3095 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
3096 3655
… …
3124 3683
3125void 3684void
3126ev_async_send (EV_P_ ev_async *w) 3685ev_async_send (EV_P_ ev_async *w)
3127{ 3686{
3128 w->sent = 1; 3687 w->sent = 1;
3129 evpipe_write (EV_A_ &gotasync); 3688 evpipe_write (EV_A_ &async_pending);
3130} 3689}
3131#endif 3690#endif
3132 3691
3133/*****************************************************************************/ 3692/*****************************************************************************/
3134 3693
… …
3174{ 3733{
3175 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3734 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3176 3735
3177 if (expect_false (!once)) 3736 if (expect_false (!once))
3178 { 3737 {
3179 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3738 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3180 return; 3739 return;
3181 } 3740 }
3182 3741
3183 once->cb = cb; 3742 once->cb = cb;
3184 once->arg = arg; 3743 once->arg = arg;
… …
3198 } 3757 }
3199} 3758}
3200 3759
3201/*****************************************************************************/ 3760/*****************************************************************************/
3202 3761
3203#if 0 3762#if EV_WALK_ENABLE
3204void 3763void
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3764ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3206{ 3765{
3207 int i, j; 3766 int i, j;
3208 ev_watcher_list *wl, *wn; 3767 ev_watcher_list *wl, *wn;
… …
3224#if EV_USE_INOTIFY 3783#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb) 3784 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ; 3785 ;
3227 else 3786 else
3228#endif 3787#endif
3229 if ((ev_io *)wl != &pipeev) 3788 if ((ev_io *)wl != &pipe_w)
3230 if (types & EV_IO) 3789 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl); 3790 cb (EV_A_ EV_IO, wl);
3232 3791
3233 wl = wn; 3792 wl = wn;
3234 } 3793 }
… …
3271 if (types & EV_ASYNC) 3830 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; ) 3831 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]); 3832 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif 3833#endif
3275 3834
3835#if EV_PREPARE_ENABLE
3276 if (types & EV_PREPARE) 3836 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; ) 3837 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE 3838# if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb) 3839 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif 3840# endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]); 3841 cb (EV_A_ EV_PREPARE, prepares [i]);
3842#endif
3282 3843
3844#if EV_CHECK_ENABLE
3283 if (types & EV_CHECK) 3845 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; ) 3846 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]); 3847 cb (EV_A_ EV_CHECK, checks [i]);
3848#endif
3286 3849
3850#if EV_SIGNAL_ENABLE
3287 if (types & EV_SIGNAL) 3851 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i) 3852 for (i = 0; i < EV_NSIG - 1; ++i)
3289 for (wl = signals [i].head; wl; ) 3853 for (wl = signals [i].head; wl; )
3290 { 3854 {
3291 wn = wl->next; 3855 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl); 3856 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn; 3857 wl = wn;
3294 } 3858 }
3859#endif
3295 3860
3861#if EV_CHILD_ENABLE
3296 if (types & EV_CHILD) 3862 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; ) 3863 for (i = (EV_PID_HASHSIZE); i--; )
3298 for (wl = childs [i]; wl; ) 3864 for (wl = childs [i]; wl; )
3299 { 3865 {
3300 wn = wl->next; 3866 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl); 3867 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn; 3868 wl = wn;
3303 } 3869 }
3870#endif
3304/* EV_STAT 0x00001000 /* stat data changed */ 3871/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3872/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306} 3873}
3307#endif 3874#endif
3308 3875
3309#if EV_MULTIPLICITY 3876#if EV_MULTIPLICITY
3310 #include "ev_wrap.h" 3877 #include "ev_wrap.h"
3311#endif 3878#endif
3312 3879
3313#ifdef __cplusplus 3880EV_CPP(})
3314}
3315#endif
3316 3881

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