ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC vs.
Revision 1.367 by root, Tue Jan 11 02:15:58 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
… …
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));*/
1754
1755 p->w->pending = 0; 2116 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2117 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2118 EV_FREQUENT_CHECK;
1758 }
1759 } 2119 }
1760} 2120}
1761 2121
1762#if EV_IDLE_ENABLE 2122#if EV_IDLE_ENABLE
2123/* make idle watchers pending. this handles the "call-idle */
2124/* only when higher priorities are idle" logic */
1763inline_size void 2125inline_size void
1764idle_reify (EV_P) 2126idle_reify (EV_P)
1765{ 2127{
1766 if (expect_false (idleall)) 2128 if (expect_false (idleall))
1767 { 2129 {
… …
1780 } 2142 }
1781 } 2143 }
1782} 2144}
1783#endif 2145#endif
1784 2146
2147/* make timers pending */
1785inline_size void 2148inline_size void
1786timers_reify (EV_P) 2149timers_reify (EV_P)
1787{ 2150{
1788 EV_FREQUENT_CHECK; 2151 EV_FREQUENT_CHECK;
1789 2152
… …
1813 EV_FREQUENT_CHECK; 2176 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2177 feed_reverse (EV_A_ (W)w);
1815 } 2178 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2179 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2180
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2181 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2182 }
1820} 2183}
1821 2184
1822#if EV_PERIODIC_ENABLE 2185#if EV_PERIODIC_ENABLE
2186/* make periodics pending */
1823inline_size void 2187inline_size void
1824periodics_reify (EV_P) 2188periodics_reify (EV_P)
1825{ 2189{
1826 EV_FREQUENT_CHECK; 2190 EV_FREQUENT_CHECK;
1827 2191
… …
1874 2238
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2239 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2240 }
1877} 2241}
1878 2242
2243/* simply recalculate all periodics */
2244/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2245static void noinline
1880periodics_reschedule (EV_P) 2246periodics_reschedule (EV_P)
1881{ 2247{
1882 int i; 2248 int i;
1883 2249
… …
1896 2262
1897 reheap (periodics, periodiccnt); 2263 reheap (periodics, periodiccnt);
1898} 2264}
1899#endif 2265#endif
1900 2266
2267/* adjust all timers by a given offset */
1901static void noinline 2268static void noinline
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2269timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2270{
1904 int i; 2271 int i;
1905 2272
… …
1909 ANHE_w (*he)->at += adjust; 2276 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2277 ANHE_at_cache (*he);
1911 } 2278 }
1912} 2279}
1913 2280
2281/* fetch new monotonic and realtime times from the kernel */
2282/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2283inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2284time_update (EV_P_ ev_tstamp max_block)
1916{ 2285{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2286#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2287 if (expect_true (have_monotonic))
1921 { 2288 {
2289 int i;
1922 ev_tstamp odiff = rtmn_diff; 2290 ev_tstamp odiff = rtmn_diff;
1923 2291
1924 mn_now = get_clock (); 2292 mn_now = get_clock ();
1925 2293
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2294 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1976 2344
1977 mn_now = ev_rt_now; 2345 mn_now = ev_rt_now;
1978 } 2346 }
1979} 2347}
1980 2348
1981static int loop_done;
1982
1983void 2349void
1984ev_loop (EV_P_ int flags) 2350ev_run (EV_P_ int flags)
1985{ 2351{
2352#if EV_FEATURE_API
2353 ++loop_depth;
2354#endif
2355
2356 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2357
1986 loop_done = EVUNLOOP_CANCEL; 2358 loop_done = EVBREAK_CANCEL;
1987 2359
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2360 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2361
1990 do 2362 do
1991 { 2363 {
1992#if EV_VERIFY >= 2 2364#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2365 ev_verify (EV_A);
1994#endif 2366#endif
1995 2367
1996#ifndef _WIN32 2368#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2369 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2370 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2378 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2379 if (expect_false (postfork))
2008 if (forkcnt) 2380 if (forkcnt)
2009 { 2381 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2382 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2383 EV_INVOKE_PENDING;
2012 } 2384 }
2013#endif 2385#endif
2014 2386
2387#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2388 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2389 if (expect_false (preparecnt))
2017 { 2390 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2391 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2392 EV_INVOKE_PENDING;
2020 } 2393 }
2394#endif
2395
2396 if (expect_false (loop_done))
2397 break;
2021 2398
2022 /* we might have forked, so reify kernel state if necessary */ 2399 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2400 if (expect_false (postfork))
2024 loop_fork (EV_A); 2401 loop_fork (EV_A);
2025 2402
… …
2029 /* calculate blocking time */ 2406 /* calculate blocking time */
2030 { 2407 {
2031 ev_tstamp waittime = 0.; 2408 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2409 ev_tstamp sleeptime = 0.;
2033 2410
2411 /* remember old timestamp for io_blocktime calculation */
2412 ev_tstamp prev_mn_now = mn_now;
2413
2414 /* update time to cancel out callback processing overhead */
2415 time_update (EV_A_ 1e100);
2416
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2417 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2035 { 2418 {
2036 /* update time to cancel out callback processing overhead */ 2419 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 2420
2039 if (timercnt) 2421 if (timercnt)
2040 { 2422 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2423 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2042 if (waittime > to) waittime = to; 2424 if (waittime > to) waittime = to;
… …
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2430 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2049 if (waittime > to) waittime = to; 2431 if (waittime > to) waittime = to;
2050 } 2432 }
2051#endif 2433#endif
2052 2434
2435 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 2436 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 2437 waittime = timeout_blocktime;
2055 2438
2056 sleeptime = waittime - backend_fudge; 2439 /* extra check because io_blocktime is commonly 0 */
2057
2058 if (expect_true (sleeptime > io_blocktime)) 2440 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 2441 {
2442 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2443
2444 if (sleeptime > waittime - backend_fudge)
2445 sleeptime = waittime - backend_fudge;
2446
2447 if (expect_true (sleeptime > 0.))
2448 {
2063 ev_sleep (sleeptime); 2449 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 2450 waittime -= sleeptime;
2451 }
2065 } 2452 }
2066 } 2453 }
2067 2454
2455#if EV_FEATURE_API
2068 ++loop_count; 2456 ++loop_count;
2457#endif
2458 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 2459 backend_poll (EV_A_ waittime);
2460 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2070 2461
2071 /* update ev_rt_now, do magic */ 2462 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 2463 time_update (EV_A_ waittime + sleeptime);
2073 } 2464 }
2074 2465
… …
2081#if EV_IDLE_ENABLE 2472#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 2473 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 2474 idle_reify (EV_A);
2084#endif 2475#endif
2085 2476
2477#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 2478 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 2479 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2480 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2481#endif
2089 2482
2090 call_pending (EV_A); 2483 EV_INVOKE_PENDING;
2091 } 2484 }
2092 while (expect_true ( 2485 while (expect_true (
2093 activecnt 2486 activecnt
2094 && !loop_done 2487 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2488 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 2489 ));
2097 2490
2098 if (loop_done == EVUNLOOP_ONE) 2491 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 2492 loop_done = EVBREAK_CANCEL;
2100}
2101 2493
2494#if EV_FEATURE_API
2495 --loop_depth;
2496#endif
2497}
2498
2102void 2499void
2103ev_unloop (EV_P_ int how) 2500ev_break (EV_P_ int how)
2104{ 2501{
2105 loop_done = how; 2502 loop_done = how;
2106} 2503}
2107 2504
2108void 2505void
… …
2135 ev_tstamp mn_prev = mn_now; 2532 ev_tstamp mn_prev = mn_now;
2136 2533
2137 ev_now_update (EV_A); 2534 ev_now_update (EV_A);
2138 timers_reschedule (EV_A_ mn_now - mn_prev); 2535 timers_reschedule (EV_A_ mn_now - mn_prev);
2139#if EV_PERIODIC_ENABLE 2536#if EV_PERIODIC_ENABLE
2537 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 2538 periodics_reschedule (EV_A);
2141#endif 2539#endif
2142} 2540}
2143 2541
2144/*****************************************************************************/ 2542/*****************************************************************************/
2543/* singly-linked list management, used when the expected list length is short */
2145 2544
2146inline_size void 2545inline_size void
2147wlist_add (WL *head, WL elem) 2546wlist_add (WL *head, WL elem)
2148{ 2547{
2149 elem->next = *head; 2548 elem->next = *head;
… …
2153inline_size void 2552inline_size void
2154wlist_del (WL *head, WL elem) 2553wlist_del (WL *head, WL elem)
2155{ 2554{
2156 while (*head) 2555 while (*head)
2157 { 2556 {
2158 if (*head == elem) 2557 if (expect_true (*head == elem))
2159 { 2558 {
2160 *head = elem->next; 2559 *head = elem->next;
2161 return; 2560 break;
2162 } 2561 }
2163 2562
2164 head = &(*head)->next; 2563 head = &(*head)->next;
2165 } 2564 }
2166} 2565}
2167 2566
2567/* internal, faster, version of ev_clear_pending */
2168inline_speed void 2568inline_speed void
2169clear_pending (EV_P_ W w) 2569clear_pending (EV_P_ W w)
2170{ 2570{
2171 if (w->pending) 2571 if (w->pending)
2172 { 2572 {
2173 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2573 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2174 w->pending = 0; 2574 w->pending = 0;
2175 } 2575 }
2176} 2576}
2177 2577
2178int 2578int
… …
2182 int pending = w_->pending; 2582 int pending = w_->pending;
2183 2583
2184 if (expect_true (pending)) 2584 if (expect_true (pending))
2185 { 2585 {
2186 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2586 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2587 p->w = (W)&pending_w;
2187 w_->pending = 0; 2588 w_->pending = 0;
2188 p->w = 0;
2189 return p->events; 2589 return p->events;
2190 } 2590 }
2191 else 2591 else
2192 return 0; 2592 return 0;
2193} 2593}
2194 2594
2195inline_size void 2595inline_size void
2196pri_adjust (EV_P_ W w) 2596pri_adjust (EV_P_ W w)
2197{ 2597{
2198 int pri = w->priority; 2598 int pri = ev_priority (w);
2199 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2599 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2200 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2600 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2201 w->priority = pri; 2601 ev_set_priority (w, pri);
2202} 2602}
2203 2603
2204inline_speed void 2604inline_speed void
2205ev_start (EV_P_ W w, int active) 2605ev_start (EV_P_ W w, int active)
2206{ 2606{
… …
2225 2625
2226 if (expect_false (ev_is_active (w))) 2626 if (expect_false (ev_is_active (w)))
2227 return; 2627 return;
2228 2628
2229 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2629 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2230 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2630 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2231 2631
2232 EV_FREQUENT_CHECK; 2632 EV_FREQUENT_CHECK;
2233 2633
2234 ev_start (EV_A_ (W)w, 1); 2634 ev_start (EV_A_ (W)w, 1);
2235 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2635 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2236 wlist_add (&anfds[fd].head, (WL)w); 2636 wlist_add (&anfds[fd].head, (WL)w);
2237 2637
2238 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2638 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2239 w->events &= ~EV__IOFDSET; 2639 w->events &= ~EV__IOFDSET;
2240 2640
2241 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2242} 2642}
2243 2643
… …
2253 EV_FREQUENT_CHECK; 2653 EV_FREQUENT_CHECK;
2254 2654
2255 wlist_del (&anfds[w->fd].head, (WL)w); 2655 wlist_del (&anfds[w->fd].head, (WL)w);
2256 ev_stop (EV_A_ (W)w); 2656 ev_stop (EV_A_ (W)w);
2257 2657
2258 fd_change (EV_A_ w->fd, 1); 2658 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2259 2659
2260 EV_FREQUENT_CHECK; 2660 EV_FREQUENT_CHECK;
2261} 2661}
2262 2662
2263void noinline 2663void noinline
… …
2305 timers [active] = timers [timercnt + HEAP0]; 2705 timers [active] = timers [timercnt + HEAP0];
2306 adjustheap (timers, timercnt, active); 2706 adjustheap (timers, timercnt, active);
2307 } 2707 }
2308 } 2708 }
2309 2709
2310 EV_FREQUENT_CHECK;
2311
2312 ev_at (w) -= mn_now; 2710 ev_at (w) -= mn_now;
2313 2711
2314 ev_stop (EV_A_ (W)w); 2712 ev_stop (EV_A_ (W)w);
2713
2714 EV_FREQUENT_CHECK;
2315} 2715}
2316 2716
2317void noinline 2717void noinline
2318ev_timer_again (EV_P_ ev_timer *w) 2718ev_timer_again (EV_P_ ev_timer *w)
2319{ 2719{
… …
2337 } 2737 }
2338 2738
2339 EV_FREQUENT_CHECK; 2739 EV_FREQUENT_CHECK;
2340} 2740}
2341 2741
2742ev_tstamp
2743ev_timer_remaining (EV_P_ ev_timer *w)
2744{
2745 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2746}
2747
2342#if EV_PERIODIC_ENABLE 2748#if EV_PERIODIC_ENABLE
2343void noinline 2749void noinline
2344ev_periodic_start (EV_P_ ev_periodic *w) 2750ev_periodic_start (EV_P_ ev_periodic *w)
2345{ 2751{
2346 if (expect_false (ev_is_active (w))) 2752 if (expect_false (ev_is_active (w)))
… …
2392 periodics [active] = periodics [periodiccnt + HEAP0]; 2798 periodics [active] = periodics [periodiccnt + HEAP0];
2393 adjustheap (periodics, periodiccnt, active); 2799 adjustheap (periodics, periodiccnt, active);
2394 } 2800 }
2395 } 2801 }
2396 2802
2397 EV_FREQUENT_CHECK;
2398
2399 ev_stop (EV_A_ (W)w); 2803 ev_stop (EV_A_ (W)w);
2804
2805 EV_FREQUENT_CHECK;
2400} 2806}
2401 2807
2402void noinline 2808void noinline
2403ev_periodic_again (EV_P_ ev_periodic *w) 2809ev_periodic_again (EV_P_ ev_periodic *w)
2404{ 2810{
… …
2410 2816
2411#ifndef SA_RESTART 2817#ifndef SA_RESTART
2412# define SA_RESTART 0 2818# define SA_RESTART 0
2413#endif 2819#endif
2414 2820
2821#if EV_SIGNAL_ENABLE
2822
2415void noinline 2823void noinline
2416ev_signal_start (EV_P_ ev_signal *w) 2824ev_signal_start (EV_P_ ev_signal *w)
2417{ 2825{
2418#if EV_MULTIPLICITY
2419 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2420#endif
2421 if (expect_false (ev_is_active (w))) 2826 if (expect_false (ev_is_active (w)))
2422 return; 2827 return;
2423 2828
2424 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2829 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2425 2830
2426 evpipe_init (EV_A); 2831#if EV_MULTIPLICITY
2832 assert (("libev: a signal must not be attached to two different loops",
2833 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2427 2834
2428 EV_FREQUENT_CHECK; 2835 signals [w->signum - 1].loop = EV_A;
2836#endif
2429 2837
2838 EV_FREQUENT_CHECK;
2839
2840#if EV_USE_SIGNALFD
2841 if (sigfd == -2)
2430 { 2842 {
2431#ifndef _WIN32 2843 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2432 sigset_t full, prev; 2844 if (sigfd < 0 && errno == EINVAL)
2433 sigfillset (&full); 2845 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2434 sigprocmask (SIG_SETMASK, &full, &prev);
2435#endif
2436 2846
2437 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2847 if (sigfd >= 0)
2848 {
2849 fd_intern (sigfd); /* doing it twice will not hurt */
2438 2850
2439#ifndef _WIN32 2851 sigemptyset (&sigfd_set);
2440 sigprocmask (SIG_SETMASK, &prev, 0); 2852
2441#endif 2853 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2854 ev_set_priority (&sigfd_w, EV_MAXPRI);
2855 ev_io_start (EV_A_ &sigfd_w);
2856 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2857 }
2442 } 2858 }
2859
2860 if (sigfd >= 0)
2861 {
2862 /* TODO: check .head */
2863 sigaddset (&sigfd_set, w->signum);
2864 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2865
2866 signalfd (sigfd, &sigfd_set, 0);
2867 }
2868#endif
2443 2869
2444 ev_start (EV_A_ (W)w, 1); 2870 ev_start (EV_A_ (W)w, 1);
2445 wlist_add (&signals [w->signum - 1].head, (WL)w); 2871 wlist_add (&signals [w->signum - 1].head, (WL)w);
2446 2872
2447 if (!((WL)w)->next) 2873 if (!((WL)w)->next)
2874# if EV_USE_SIGNALFD
2875 if (sigfd < 0) /*TODO*/
2876# endif
2448 { 2877 {
2449#if _WIN32 2878# ifdef _WIN32
2879 evpipe_init (EV_A);
2880
2450 signal (w->signum, ev_sighandler); 2881 signal (w->signum, ev_sighandler);
2451#else 2882# else
2452 struct sigaction sa; 2883 struct sigaction sa;
2884
2885 evpipe_init (EV_A);
2886
2453 sa.sa_handler = ev_sighandler; 2887 sa.sa_handler = ev_sighandler;
2454 sigfillset (&sa.sa_mask); 2888 sigfillset (&sa.sa_mask);
2455 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2889 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2456 sigaction (w->signum, &sa, 0); 2890 sigaction (w->signum, &sa, 0);
2891
2892 if (origflags & EVFLAG_NOSIGMASK)
2893 {
2894 sigemptyset (&sa.sa_mask);
2895 sigaddset (&sa.sa_mask, w->signum);
2896 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2897 }
2457#endif 2898#endif
2458 } 2899 }
2459 2900
2460 EV_FREQUENT_CHECK; 2901 EV_FREQUENT_CHECK;
2461} 2902}
2462 2903
2463void noinline 2904void noinline
… …
2471 2912
2472 wlist_del (&signals [w->signum - 1].head, (WL)w); 2913 wlist_del (&signals [w->signum - 1].head, (WL)w);
2473 ev_stop (EV_A_ (W)w); 2914 ev_stop (EV_A_ (W)w);
2474 2915
2475 if (!signals [w->signum - 1].head) 2916 if (!signals [w->signum - 1].head)
2917 {
2918#if EV_MULTIPLICITY
2919 signals [w->signum - 1].loop = 0; /* unattach from signal */
2920#endif
2921#if EV_USE_SIGNALFD
2922 if (sigfd >= 0)
2923 {
2924 sigset_t ss;
2925
2926 sigemptyset (&ss);
2927 sigaddset (&ss, w->signum);
2928 sigdelset (&sigfd_set, w->signum);
2929
2930 signalfd (sigfd, &sigfd_set, 0);
2931 sigprocmask (SIG_UNBLOCK, &ss, 0);
2932 }
2933 else
2934#endif
2476 signal (w->signum, SIG_DFL); 2935 signal (w->signum, SIG_DFL);
2936 }
2477 2937
2478 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
2479} 2939}
2940
2941#endif
2942
2943#if EV_CHILD_ENABLE
2480 2944
2481void 2945void
2482ev_child_start (EV_P_ ev_child *w) 2946ev_child_start (EV_P_ ev_child *w)
2483{ 2947{
2484#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
… …
2488 return; 2952 return;
2489 2953
2490 EV_FREQUENT_CHECK; 2954 EV_FREQUENT_CHECK;
2491 2955
2492 ev_start (EV_A_ (W)w, 1); 2956 ev_start (EV_A_ (W)w, 1);
2493 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2957 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2494 2958
2495 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2496} 2960}
2497 2961
2498void 2962void
… …
2502 if (expect_false (!ev_is_active (w))) 2966 if (expect_false (!ev_is_active (w)))
2503 return; 2967 return;
2504 2968
2505 EV_FREQUENT_CHECK; 2969 EV_FREQUENT_CHECK;
2506 2970
2507 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2971 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2508 ev_stop (EV_A_ (W)w); 2972 ev_stop (EV_A_ (W)w);
2509 2973
2510 EV_FREQUENT_CHECK; 2974 EV_FREQUENT_CHECK;
2511} 2975}
2976
2977#endif
2512 2978
2513#if EV_STAT_ENABLE 2979#if EV_STAT_ENABLE
2514 2980
2515# ifdef _WIN32 2981# ifdef _WIN32
2516# undef lstat 2982# undef lstat
… …
2522#define MIN_STAT_INTERVAL 0.1074891 2988#define MIN_STAT_INTERVAL 0.1074891
2523 2989
2524static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2990static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2525 2991
2526#if EV_USE_INOTIFY 2992#if EV_USE_INOTIFY
2527# define EV_INOTIFY_BUFSIZE 8192 2993
2994/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2995# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2528 2996
2529static void noinline 2997static void noinline
2530infy_add (EV_P_ ev_stat *w) 2998infy_add (EV_P_ ev_stat *w)
2531{ 2999{
2532 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3000 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2533 3001
2534 if (w->wd < 0) 3002 if (w->wd >= 0)
3003 {
3004 struct statfs sfs;
3005
3006 /* now local changes will be tracked by inotify, but remote changes won't */
3007 /* unless the filesystem is known to be local, we therefore still poll */
3008 /* also do poll on <2.6.25, but with normal frequency */
3009
3010 if (!fs_2625)
3011 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3012 else if (!statfs (w->path, &sfs)
3013 && (sfs.f_type == 0x1373 /* devfs */
3014 || sfs.f_type == 0xEF53 /* ext2/3 */
3015 || sfs.f_type == 0x3153464a /* jfs */
3016 || sfs.f_type == 0x52654973 /* reiser3 */
3017 || sfs.f_type == 0x01021994 /* tempfs */
3018 || sfs.f_type == 0x58465342 /* xfs */))
3019 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3020 else
3021 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2535 { 3022 }
3023 else
3024 {
3025 /* can't use inotify, continue to stat */
2536 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2537 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2538 3027
2539 /* monitor some parent directory for speedup hints */ 3028 /* if path is not there, monitor some parent directory for speedup hints */
2540 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3029 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2541 /* but an efficiency issue only */ 3030 /* but an efficiency issue only */
2542 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3031 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2543 { 3032 {
2544 char path [4096]; 3033 char path [4096];
… …
2560 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3049 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2561 } 3050 }
2562 } 3051 }
2563 3052
2564 if (w->wd >= 0) 3053 if (w->wd >= 0)
2565 {
2566 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3054 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2567 3055
2568 /* now local changes will be tracked by inotify, but remote changes won't */ 3056 /* now re-arm timer, if required */
2569 /* unless the filesystem it known to be local, we therefore still poll */ 3057 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570 /* also do poll on <2.6.25, but with normal frequency */
2571 struct statfs sfs;
2572
2573 if (fs_2625 && !statfs (w->path, &sfs))
2574 if (sfs.f_type == 0x1373 /* devfs */
2575 || sfs.f_type == 0xEF53 /* ext2/3 */
2576 || sfs.f_type == 0x3153464a /* jfs */
2577 || sfs.f_type == 0x52654973 /* reiser3 */
2578 || sfs.f_type == 0x01021994 /* tempfs */
2579 || sfs.f_type == 0x58465342 /* xfs */)
2580 return;
2581
2582 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2583 ev_timer_again (EV_A_ &w->timer); 3058 ev_timer_again (EV_A_ &w->timer);
2584 } 3059 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2585} 3060}
2586 3061
2587static void noinline 3062static void noinline
2588infy_del (EV_P_ ev_stat *w) 3063infy_del (EV_P_ ev_stat *w)
2589{ 3064{
… …
2592 3067
2593 if (wd < 0) 3068 if (wd < 0)
2594 return; 3069 return;
2595 3070
2596 w->wd = -2; 3071 w->wd = -2;
2597 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3072 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2598 wlist_del (&fs_hash [slot].head, (WL)w); 3073 wlist_del (&fs_hash [slot].head, (WL)w);
2599 3074
2600 /* remove this watcher, if others are watching it, they will rearm */ 3075 /* remove this watcher, if others are watching it, they will rearm */
2601 inotify_rm_watch (fs_fd, wd); 3076 inotify_rm_watch (fs_fd, wd);
2602} 3077}
… …
2604static void noinline 3079static void noinline
2605infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3080infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2606{ 3081{
2607 if (slot < 0) 3082 if (slot < 0)
2608 /* overflow, need to check for all hash slots */ 3083 /* overflow, need to check for all hash slots */
2609 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3084 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2610 infy_wd (EV_A_ slot, wd, ev); 3085 infy_wd (EV_A_ slot, wd, ev);
2611 else 3086 else
2612 { 3087 {
2613 WL w_; 3088 WL w_;
2614 3089
2615 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3090 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2616 { 3091 {
2617 ev_stat *w = (ev_stat *)w_; 3092 ev_stat *w = (ev_stat *)w_;
2618 w_ = w_->next; /* lets us remove this watcher and all before it */ 3093 w_ = w_->next; /* lets us remove this watcher and all before it */
2619 3094
2620 if (w->wd == wd || wd == -1) 3095 if (w->wd == wd || wd == -1)
2621 { 3096 {
2622 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3097 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2623 { 3098 {
2624 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3099 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2625 w->wd = -1; 3100 w->wd = -1;
2626 infy_add (EV_A_ w); /* re-add, no matter what */ 3101 infy_add (EV_A_ w); /* re-add, no matter what */
2627 } 3102 }
2628 3103
2629 stat_timer_cb (EV_A_ &w->timer, 0); 3104 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2634 3109
2635static void 3110static void
2636infy_cb (EV_P_ ev_io *w, int revents) 3111infy_cb (EV_P_ ev_io *w, int revents)
2637{ 3112{
2638 char buf [EV_INOTIFY_BUFSIZE]; 3113 char buf [EV_INOTIFY_BUFSIZE];
2639 struct inotify_event *ev = (struct inotify_event *)buf;
2640 int ofs; 3114 int ofs;
2641 int len = read (fs_fd, buf, sizeof (buf)); 3115 int len = read (fs_fd, buf, sizeof (buf));
2642 3116
2643 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3117 for (ofs = 0; ofs < len; )
3118 {
3119 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2644 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3120 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3121 ofs += sizeof (struct inotify_event) + ev->len;
3122 }
2645} 3123}
2646 3124
2647inline_size void 3125inline_size void
2648check_2625 (EV_P) 3126ev_check_2625 (EV_P)
2649{ 3127{
2650 /* kernels < 2.6.25 are borked 3128 /* kernels < 2.6.25 are borked
2651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3129 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2652 */ 3130 */
2653 struct utsname buf; 3131 if (ev_linux_version () < 0x020619)
2654 int major, minor, micro;
2655
2656 if (uname (&buf))
2657 return; 3132 return;
2658 3133
2659 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2660 return;
2661
2662 if (major < 2
2663 || (major == 2 && minor < 6)
2664 || (major == 2 && minor == 6 && micro < 25))
2665 return;
2666
2667 fs_2625 = 1; 3134 fs_2625 = 1;
3135}
3136
3137inline_size int
3138infy_newfd (void)
3139{
3140#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3141 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3142 if (fd >= 0)
3143 return fd;
3144#endif
3145 return inotify_init ();
2668} 3146}
2669 3147
2670inline_size void 3148inline_size void
2671infy_init (EV_P) 3149infy_init (EV_P)
2672{ 3150{
2673 if (fs_fd != -2) 3151 if (fs_fd != -2)
2674 return; 3152 return;
2675 3153
2676 fs_fd = -1; 3154 fs_fd = -1;
2677 3155
2678 check_2625 (EV_A); 3156 ev_check_2625 (EV_A);
2679 3157
2680 fs_fd = inotify_init (); 3158 fs_fd = infy_newfd ();
2681 3159
2682 if (fs_fd >= 0) 3160 if (fs_fd >= 0)
2683 { 3161 {
3162 fd_intern (fs_fd);
2684 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3163 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2685 ev_set_priority (&fs_w, EV_MAXPRI); 3164 ev_set_priority (&fs_w, EV_MAXPRI);
2686 ev_io_start (EV_A_ &fs_w); 3165 ev_io_start (EV_A_ &fs_w);
3166 ev_unref (EV_A);
2687 } 3167 }
2688} 3168}
2689 3169
2690inline_size void 3170inline_size void
2691infy_fork (EV_P) 3171infy_fork (EV_P)
… …
2693 int slot; 3173 int slot;
2694 3174
2695 if (fs_fd < 0) 3175 if (fs_fd < 0)
2696 return; 3176 return;
2697 3177
3178 ev_ref (EV_A);
3179 ev_io_stop (EV_A_ &fs_w);
2698 close (fs_fd); 3180 close (fs_fd);
2699 fs_fd = inotify_init (); 3181 fs_fd = infy_newfd ();
2700 3182
3183 if (fs_fd >= 0)
3184 {
3185 fd_intern (fs_fd);
3186 ev_io_set (&fs_w, fs_fd, EV_READ);
3187 ev_io_start (EV_A_ &fs_w);
3188 ev_unref (EV_A);
3189 }
3190
2701 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3191 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2702 { 3192 {
2703 WL w_ = fs_hash [slot].head; 3193 WL w_ = fs_hash [slot].head;
2704 fs_hash [slot].head = 0; 3194 fs_hash [slot].head = 0;
2705 3195
2706 while (w_) 3196 while (w_)
… …
2711 w->wd = -1; 3201 w->wd = -1;
2712 3202
2713 if (fs_fd >= 0) 3203 if (fs_fd >= 0)
2714 infy_add (EV_A_ w); /* re-add, no matter what */ 3204 infy_add (EV_A_ w); /* re-add, no matter what */
2715 else 3205 else
3206 {
3207 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3208 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2716 ev_timer_again (EV_A_ &w->timer); 3209 ev_timer_again (EV_A_ &w->timer);
3210 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3211 }
2717 } 3212 }
2718 } 3213 }
2719} 3214}
2720 3215
2721#endif 3216#endif
… …
2738static void noinline 3233static void noinline
2739stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3234stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2740{ 3235{
2741 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3236 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2742 3237
2743 /* we copy this here each the time so that */ 3238 ev_statdata prev = w->attr;
2744 /* prev has the old value when the callback gets invoked */
2745 w->prev = w->attr;
2746 ev_stat_stat (EV_A_ w); 3239 ev_stat_stat (EV_A_ w);
2747 3240
2748 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3241 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2749 if ( 3242 if (
2750 w->prev.st_dev != w->attr.st_dev 3243 prev.st_dev != w->attr.st_dev
2751 || w->prev.st_ino != w->attr.st_ino 3244 || prev.st_ino != w->attr.st_ino
2752 || w->prev.st_mode != w->attr.st_mode 3245 || prev.st_mode != w->attr.st_mode
2753 || w->prev.st_nlink != w->attr.st_nlink 3246 || prev.st_nlink != w->attr.st_nlink
2754 || w->prev.st_uid != w->attr.st_uid 3247 || prev.st_uid != w->attr.st_uid
2755 || w->prev.st_gid != w->attr.st_gid 3248 || prev.st_gid != w->attr.st_gid
2756 || w->prev.st_rdev != w->attr.st_rdev 3249 || prev.st_rdev != w->attr.st_rdev
2757 || w->prev.st_size != w->attr.st_size 3250 || prev.st_size != w->attr.st_size
2758 || w->prev.st_atime != w->attr.st_atime 3251 || prev.st_atime != w->attr.st_atime
2759 || w->prev.st_mtime != w->attr.st_mtime 3252 || prev.st_mtime != w->attr.st_mtime
2760 || w->prev.st_ctime != w->attr.st_ctime 3253 || prev.st_ctime != w->attr.st_ctime
2761 ) { 3254 ) {
3255 /* we only update w->prev on actual differences */
3256 /* in case we test more often than invoke the callback, */
3257 /* to ensure that prev is always different to attr */
3258 w->prev = prev;
3259
2762 #if EV_USE_INOTIFY 3260 #if EV_USE_INOTIFY
2763 if (fs_fd >= 0) 3261 if (fs_fd >= 0)
2764 { 3262 {
2765 infy_del (EV_A_ w); 3263 infy_del (EV_A_ w);
2766 infy_add (EV_A_ w); 3264 infy_add (EV_A_ w);
… …
2791 3289
2792 if (fs_fd >= 0) 3290 if (fs_fd >= 0)
2793 infy_add (EV_A_ w); 3291 infy_add (EV_A_ w);
2794 else 3292 else
2795#endif 3293#endif
3294 {
2796 ev_timer_again (EV_A_ &w->timer); 3295 ev_timer_again (EV_A_ &w->timer);
3296 ev_unref (EV_A);
3297 }
2797 3298
2798 ev_start (EV_A_ (W)w, 1); 3299 ev_start (EV_A_ (W)w, 1);
2799 3300
2800 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2801} 3302}
… …
2810 EV_FREQUENT_CHECK; 3311 EV_FREQUENT_CHECK;
2811 3312
2812#if EV_USE_INOTIFY 3313#if EV_USE_INOTIFY
2813 infy_del (EV_A_ w); 3314 infy_del (EV_A_ w);
2814#endif 3315#endif
3316
3317 if (ev_is_active (&w->timer))
3318 {
3319 ev_ref (EV_A);
2815 ev_timer_stop (EV_A_ &w->timer); 3320 ev_timer_stop (EV_A_ &w->timer);
3321 }
2816 3322
2817 ev_stop (EV_A_ (W)w); 3323 ev_stop (EV_A_ (W)w);
2818 3324
2819 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
2820} 3326}
… …
2865 3371
2866 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
2867} 3373}
2868#endif 3374#endif
2869 3375
3376#if EV_PREPARE_ENABLE
2870void 3377void
2871ev_prepare_start (EV_P_ ev_prepare *w) 3378ev_prepare_start (EV_P_ ev_prepare *w)
2872{ 3379{
2873 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2874 return; 3381 return;
… …
2900 3407
2901 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
2902 3409
2903 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
2904} 3411}
3412#endif
2905 3413
3414#if EV_CHECK_ENABLE
2906void 3415void
2907ev_check_start (EV_P_ ev_check *w) 3416ev_check_start (EV_P_ ev_check *w)
2908{ 3417{
2909 if (expect_false (ev_is_active (w))) 3418 if (expect_false (ev_is_active (w)))
2910 return; 3419 return;
… …
2936 3445
2937 ev_stop (EV_A_ (W)w); 3446 ev_stop (EV_A_ (W)w);
2938 3447
2939 EV_FREQUENT_CHECK; 3448 EV_FREQUENT_CHECK;
2940} 3449}
3450#endif
2941 3451
2942#if EV_EMBED_ENABLE 3452#if EV_EMBED_ENABLE
2943void noinline 3453void noinline
2944ev_embed_sweep (EV_P_ ev_embed *w) 3454ev_embed_sweep (EV_P_ ev_embed *w)
2945{ 3455{
2946 ev_loop (w->other, EVLOOP_NONBLOCK); 3456 ev_run (w->other, EVRUN_NOWAIT);
2947} 3457}
2948 3458
2949static void 3459static void
2950embed_io_cb (EV_P_ ev_io *io, int revents) 3460embed_io_cb (EV_P_ ev_io *io, int revents)
2951{ 3461{
2952 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3462 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2953 3463
2954 if (ev_cb (w)) 3464 if (ev_cb (w))
2955 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3465 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2956 else 3466 else
2957 ev_loop (w->other, EVLOOP_NONBLOCK); 3467 ev_run (w->other, EVRUN_NOWAIT);
2958} 3468}
2959 3469
2960static void 3470static void
2961embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3471embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2962{ 3472{
2963 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3473 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2964 3474
2965 { 3475 {
2966 struct ev_loop *loop = w->other; 3476 EV_P = w->other;
2967 3477
2968 while (fdchangecnt) 3478 while (fdchangecnt)
2969 { 3479 {
2970 fd_reify (EV_A); 3480 fd_reify (EV_A);
2971 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3481 ev_run (EV_A_ EVRUN_NOWAIT);
2972 } 3482 }
2973 } 3483 }
2974} 3484}
2975 3485
2976static void 3486static void
… …
2979 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3489 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2980 3490
2981 ev_embed_stop (EV_A_ w); 3491 ev_embed_stop (EV_A_ w);
2982 3492
2983 { 3493 {
2984 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2985 3495
2986 ev_loop_fork (EV_A); 3496 ev_loop_fork (EV_A);
2987 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3497 ev_run (EV_A_ EVRUN_NOWAIT);
2988 } 3498 }
2989 3499
2990 ev_embed_start (EV_A_ w); 3500 ev_embed_start (EV_A_ w);
2991} 3501}
2992 3502
… …
3003{ 3513{
3004 if (expect_false (ev_is_active (w))) 3514 if (expect_false (ev_is_active (w)))
3005 return; 3515 return;
3006 3516
3007 { 3517 {
3008 struct ev_loop *loop = w->other; 3518 EV_P = w->other;
3009 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3519 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3010 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3520 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3011 } 3521 }
3012 3522
3013 EV_FREQUENT_CHECK; 3523 EV_FREQUENT_CHECK;
… …
3040 3550
3041 ev_io_stop (EV_A_ &w->io); 3551 ev_io_stop (EV_A_ &w->io);
3042 ev_prepare_stop (EV_A_ &w->prepare); 3552 ev_prepare_stop (EV_A_ &w->prepare);
3043 ev_fork_stop (EV_A_ &w->fork); 3553 ev_fork_stop (EV_A_ &w->fork);
3044 3554
3555 ev_stop (EV_A_ (W)w);
3556
3045 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
3046} 3558}
3047#endif 3559#endif
3048 3560
3049#if EV_FORK_ENABLE 3561#if EV_FORK_ENABLE
… …
3082 3594
3083 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
3084} 3596}
3085#endif 3597#endif
3086 3598
3087#if EV_ASYNC_ENABLE 3599#if EV_CLEANUP_ENABLE
3088void 3600void
3089ev_async_start (EV_P_ ev_async *w) 3601ev_cleanup_start (EV_P_ ev_cleanup *w)
3090{ 3602{
3091 if (expect_false (ev_is_active (w))) 3603 if (expect_false (ev_is_active (w)))
3092 return; 3604 return;
3605
3606 EV_FREQUENT_CHECK;
3607
3608 ev_start (EV_A_ (W)w, ++cleanupcnt);
3609 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3610 cleanups [cleanupcnt - 1] = w;
3611
3612 /* cleanup watchers should never keep a refcount on the loop */
3613 ev_unref (EV_A);
3614 EV_FREQUENT_CHECK;
3615}
3616
3617void
3618ev_cleanup_stop (EV_P_ ev_cleanup *w)
3619{
3620 clear_pending (EV_A_ (W)w);
3621 if (expect_false (!ev_is_active (w)))
3622 return;
3623
3624 EV_FREQUENT_CHECK;
3625 ev_ref (EV_A);
3626
3627 {
3628 int active = ev_active (w);
3629
3630 cleanups [active - 1] = cleanups [--cleanupcnt];
3631 ev_active (cleanups [active - 1]) = active;
3632 }
3633
3634 ev_stop (EV_A_ (W)w);
3635
3636 EV_FREQUENT_CHECK;
3637}
3638#endif
3639
3640#if EV_ASYNC_ENABLE
3641void
3642ev_async_start (EV_P_ ev_async *w)
3643{
3644 if (expect_false (ev_is_active (w)))
3645 return;
3646
3647 w->sent = 0;
3093 3648
3094 evpipe_init (EV_A); 3649 evpipe_init (EV_A);
3095 3650
3096 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
3097 3652
… …
3125 3680
3126void 3681void
3127ev_async_send (EV_P_ ev_async *w) 3682ev_async_send (EV_P_ ev_async *w)
3128{ 3683{
3129 w->sent = 1; 3684 w->sent = 1;
3130 evpipe_write (EV_A_ &gotasync); 3685 evpipe_write (EV_A_ &async_pending);
3131} 3686}
3132#endif 3687#endif
3133 3688
3134/*****************************************************************************/ 3689/*****************************************************************************/
3135 3690
… …
3175{ 3730{
3176 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3731 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3177 3732
3178 if (expect_false (!once)) 3733 if (expect_false (!once))
3179 { 3734 {
3180 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3735 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3181 return; 3736 return;
3182 } 3737 }
3183 3738
3184 once->cb = cb; 3739 once->cb = cb;
3185 once->arg = arg; 3740 once->arg = arg;
… …
3199 } 3754 }
3200} 3755}
3201 3756
3202/*****************************************************************************/ 3757/*****************************************************************************/
3203 3758
3204#if 0 3759#if EV_WALK_ENABLE
3205void 3760void
3206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3761ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3207{ 3762{
3208 int i, j; 3763 int i, j;
3209 ev_watcher_list *wl, *wn; 3764 ev_watcher_list *wl, *wn;
… …
3225#if EV_USE_INOTIFY 3780#if EV_USE_INOTIFY
3226 if (ev_cb ((ev_io *)wl) == infy_cb) 3781 if (ev_cb ((ev_io *)wl) == infy_cb)
3227 ; 3782 ;
3228 else 3783 else
3229#endif 3784#endif
3230 if ((ev_io *)wl != &pipeev) 3785 if ((ev_io *)wl != &pipe_w)
3231 if (types & EV_IO) 3786 if (types & EV_IO)
3232 cb (EV_A_ EV_IO, wl); 3787 cb (EV_A_ EV_IO, wl);
3233 3788
3234 wl = wn; 3789 wl = wn;
3235 } 3790 }
… …
3272 if (types & EV_ASYNC) 3827 if (types & EV_ASYNC)
3273 for (i = asynccnt; i--; ) 3828 for (i = asynccnt; i--; )
3274 cb (EV_A_ EV_ASYNC, asyncs [i]); 3829 cb (EV_A_ EV_ASYNC, asyncs [i]);
3275#endif 3830#endif
3276 3831
3832#if EV_PREPARE_ENABLE
3277 if (types & EV_PREPARE) 3833 if (types & EV_PREPARE)
3278 for (i = preparecnt; i--; ) 3834 for (i = preparecnt; i--; )
3279#if EV_EMBED_ENABLE 3835# if EV_EMBED_ENABLE
3280 if (ev_cb (prepares [i]) != embed_prepare_cb) 3836 if (ev_cb (prepares [i]) != embed_prepare_cb)
3281#endif 3837# endif
3282 cb (EV_A_ EV_PREPARE, prepares [i]); 3838 cb (EV_A_ EV_PREPARE, prepares [i]);
3839#endif
3283 3840
3841#if EV_CHECK_ENABLE
3284 if (types & EV_CHECK) 3842 if (types & EV_CHECK)
3285 for (i = checkcnt; i--; ) 3843 for (i = checkcnt; i--; )
3286 cb (EV_A_ EV_CHECK, checks [i]); 3844 cb (EV_A_ EV_CHECK, checks [i]);
3845#endif
3287 3846
3847#if EV_SIGNAL_ENABLE
3288 if (types & EV_SIGNAL) 3848 if (types & EV_SIGNAL)
3289 for (i = 0; i < signalmax; ++i) 3849 for (i = 0; i < EV_NSIG - 1; ++i)
3290 for (wl = signals [i].head; wl; ) 3850 for (wl = signals [i].head; wl; )
3291 { 3851 {
3292 wn = wl->next; 3852 wn = wl->next;
3293 cb (EV_A_ EV_SIGNAL, wl); 3853 cb (EV_A_ EV_SIGNAL, wl);
3294 wl = wn; 3854 wl = wn;
3295 } 3855 }
3856#endif
3296 3857
3858#if EV_CHILD_ENABLE
3297 if (types & EV_CHILD) 3859 if (types & EV_CHILD)
3298 for (i = EV_PID_HASHSIZE; i--; ) 3860 for (i = (EV_PID_HASHSIZE); i--; )
3299 for (wl = childs [i]; wl; ) 3861 for (wl = childs [i]; wl; )
3300 { 3862 {
3301 wn = wl->next; 3863 wn = wl->next;
3302 cb (EV_A_ EV_CHILD, wl); 3864 cb (EV_A_ EV_CHILD, wl);
3303 wl = wn; 3865 wl = wn;
3304 } 3866 }
3867#endif
3305/* EV_STAT 0x00001000 /* stat data changed */ 3868/* EV_STAT 0x00001000 /* stat data changed */
3306/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3869/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3307} 3870}
3308#endif 3871#endif
3309 3872
3310#if EV_MULTIPLICITY 3873#if EV_MULTIPLICITY
3311 #include "ev_wrap.h" 3874 #include "ev_wrap.h"
3312#endif 3875#endif
3313 3876
3314#ifdef __cplusplus 3877EV_CPP(})
3315}
3316#endif
3317 3878

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines