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Comparing libev/ev.c (file contents):
Revision 1.319 by root, Wed Nov 18 10:25:22 2009 UTC vs.
Revision 1.358 by root, Sun Oct 24 14:44:40 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
77# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
79# endif 75# endif
80# endif 76# endif
81 77
78# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
85# else 82# else
83# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
88# endif 94# endif
89 95
96# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 99# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 100# else
101# undef EV_USE_POLL
102# define EV_USE_POLL 0 102# define EV_USE_POLL 0
103# endif
104# endif 103# endif
105 104
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
109# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
112# endif 112# endif
113 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
120# endif 121# endif
121 122
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
125# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
128# endif 130# endif
129 131
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
136# endif 139# endif
137 140
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 142# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 143# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
144# endif 148# endif
145 149
150# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 151# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 152# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
152# endif 157# endif
153 158
154#endif 159#endif
155 160
156#include <math.h> 161#include <math.h>
163 168
164#include <assert.h> 169#include <assert.h>
165#include <errno.h> 170#include <errno.h>
166#include <sys/types.h> 171#include <sys/types.h>
167#include <time.h> 172#include <time.h>
173#include <limits.h>
168 174
169#include <signal.h> 175#include <signal.h>
170 176
171#ifdef EV_H 177#ifdef EV_H
172# include EV_H 178# include EV_H
173#else 179#else
174# include "ev.h" 180# include "ev.h"
175#endif 181#endif
182
183EV_CPP(extern "C" {)
176 184
177#ifndef _WIN32 185#ifndef _WIN32
178# include <sys/time.h> 186# include <sys/time.h>
179# include <sys/wait.h> 187# include <sys/wait.h>
180# include <unistd.h> 188# include <unistd.h>
183# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
184# include <windows.h> 192# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
187# endif 195# endif
196# undef EV_AVOID_STDIO
188#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
189 206
190/* 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 */
191 208
192/* try to deduce the maximum number of signals on this platform */ 209/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 210#if defined (EV_NSIG)
205#elif defined (MAXSIG) 222#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1) 223# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 224#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1) 225# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 226#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 228#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 230#else
214# error "unable to find value for NSIG, please report" 231# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */ 232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
216# define EV_NSIG 65 234# define EV_NSIG 65
217#endif 235#endif
218 236
219#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 240# else
223# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
224# endif 242# endif
225#endif 243#endif
226 244
227#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 248# else
231# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
232# endif 250# endif
233#endif 251#endif
234 252
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 255#endif
238 256
239#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 260# else
243# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
244# endif 262# endif
245#endif 263#endif
246 264
247#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 267#endif
250 268
251#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
252# ifdef _WIN32 270# ifdef _WIN32
253# define EV_USE_POLL 0 271# define EV_USE_POLL 0
254# else 272# else
255# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 274# endif
257#endif 275#endif
258 276
259#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 280# else
263# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
264# endif 282# endif
265#endif 283#endif
266 284
272# define EV_USE_PORT 0 290# define EV_USE_PORT 0
273#endif 291#endif
274 292
275#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 296# else
279# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
280# endif 298# endif
281#endif 299#endif
282 300
283#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 303#endif
290 304
291#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 307#endif
298 308
299#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 312# else
303# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
304# endif 314# endif
305#endif 315#endif
306 316
307#ifndef EV_USE_SIGNALFD 317#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 319# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 320# else
311# define EV_USE_SIGNALFD 0 321# define EV_USE_SIGNALFD 0
312# endif 322# endif
313#endif 323#endif
314 324
317# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
319#endif 329#endif
320 330
321#ifndef EV_VERIFY 331#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 333#endif
324 334
325#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 337#endif
328 338
329#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 341#endif
332 342
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 344/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 345#if EV_USE_CLOCK_SYSCALL
344# endif 354# endif
345#endif 355#endif
346 356
347/* 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 */
348 358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
349#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
350# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
351# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
352#endif 368#endif
353 369
366# include <sys/select.h> 382# include <sys/select.h>
367# endif 383# endif
368#endif 384#endif
369 385
370#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 387# include <sys/statfs.h>
373# include <sys/inotify.h> 388# include <sys/inotify.h>
374/* 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 */
375# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
393# define EFD_CLOEXEC O_CLOEXEC 408# define EFD_CLOEXEC O_CLOEXEC
394# else 409# else
395# define EFD_CLOEXEC 02000000 410# define EFD_CLOEXEC 02000000
396# endif 411# endif
397# endif 412# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 414#endif
406 415
407#if EV_USE_SIGNALFD 416#if EV_USE_SIGNALFD
408/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
409# include <stdint.h> 418# include <stdint.h>
415# define SFD_CLOEXEC O_CLOEXEC 424# define SFD_CLOEXEC O_CLOEXEC
416# else 425# else
417# define SFD_CLOEXEC 02000000 426# define SFD_CLOEXEC 02000000
418# endif 427# endif
419# endif 428# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
424 430
425struct signalfd_siginfo 431struct signalfd_siginfo
426{ 432{
427 uint32_t ssi_signo; 433 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 434 char pad[128 - sizeof (uint32_t)];
429}; 435};
430# ifdef __cplusplus
431}
432# endif 436#endif
433#endif
434
435 437
436/**/ 438/**/
437 439
438#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 442#else
441# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
442#endif 444#endif
443 445
444/* 446/*
452#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
453 455
454#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) */
455#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) */
456 458
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)
461
457#if __GNUC__ >= 4 462#if __GNUC__ >= 4
458# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
459# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
460#else 465#else
461# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
467 472
468#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
469#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
470#define inline_size static inline 475#define inline_size static inline
471 476
472#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
473# define inline_speed static noinline 480# define inline_speed static noinline
474#else
475# define inline_speed static inline
476#endif 481#endif
477 482
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 484
480#if EV_MINPRI == EV_MAXPRI 485#if EV_MINPRI == EV_MAXPRI
493#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
495 500
496#if EV_USE_REALTIME 501#if EV_USE_REALTIME
497/* 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 */
498/* giving it a reasonably high chance of working on typical architetcures */ 503/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 505#endif
501 506
502#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
505 510
506#ifndef EV_FD_TO_WIN32_HANDLE 511#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif 513#endif
509#ifndef EV_WIN32_HANDLE_TO_FD 514#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif 516#endif
512#ifndef EV_WIN32_CLOSE_FD 517#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd) 518# define EV_WIN32_CLOSE_FD(fd) close (fd)
514#endif 519#endif
515 520
516#ifdef _WIN32 521#ifdef _WIN32
517# include "ev_win32.c" 522# include "ev_win32.c"
518#endif 523#endif
519 524
520/*****************************************************************************/ 525/*****************************************************************************/
526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
521 576
522static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
523 578
524void 579void
525ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
535 590
536 if (syserr_cb) 591 if (syserr_cb)
537 syserr_cb (msg); 592 syserr_cb (msg);
538 else 593 else
539 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
540 perror (msg); 603 perror (msg);
604#endif
541 abort (); 605 abort ();
542 } 606 }
543} 607}
544 608
545static void * 609static void *
546ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
547{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
548 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
551 */ 618 */
552 619
553 if (size) 620 if (size)
554 return realloc (ptr, size); 621 return realloc (ptr, size);
555 622
556 free (ptr); 623 free (ptr);
557 return 0; 624 return 0;
625#endif
558} 626}
559 627
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
561 629
562void 630void
570{ 638{
571 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
572 640
573 if (!ptr && size) 641 if (!ptr && size)
574 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
576 abort (); 648 abort ();
577 } 649 }
578 650
579 return ptr; 651 return ptr;
580} 652}
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 669 unsigned char unused;
598#if EV_USE_EPOLL 670#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 671 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 672#endif
601#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 674 SOCKET handle;
675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
603#endif 678#endif
604} ANFD; 679} ANFD;
605 680
606/* stores the pending event set for a given watcher */ 681/* stores the pending event set for a given watcher */
607typedef struct 682typedef struct
662 737
663 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
664 739
665#endif 740#endif
666 741
667#if EV_MINIMAL < 2 742#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 745# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 746#else
672# define EV_RELEASE_CB (void)0 747# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 748# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 750#endif
676 751
677#define EVUNLOOP_RECURSE 0x80 752#define EVBREAK_RECURSE 0x80
678 753
679/*****************************************************************************/ 754/*****************************************************************************/
680 755
681#ifndef EV_HAVE_EV_TIME 756#ifndef EV_HAVE_EV_TIME
682ev_tstamp 757ev_tstamp
726 if (delay > 0.) 801 if (delay > 0.)
727 { 802 {
728#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
729 struct timespec ts; 804 struct timespec ts;
730 805
731 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
735#elif defined(_WIN32) 808#elif defined(_WIN32)
736 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
737#else 810#else
738 struct timeval tv; 811 struct timeval tv;
739 812
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
747#endif 818#endif
748 } 819 }
749} 820}
750 821
751/*****************************************************************************/ 822/*****************************************************************************/
752 823
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 825
755/* find a suitable new size for the given array, */ 826/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 827/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 828inline_size int
758array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
759{ 830{
760 int ncur = cur + 1; 831 int ncur = cur + 1;
761 832
857} 928}
858 929
859/*****************************************************************************/ 930/*****************************************************************************/
860 931
861inline_speed void 932inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
863{ 934{
864 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
865 ev_io *w; 936 ev_io *w;
866 937
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879fd_event (EV_P_ int fd, int revents) 950fd_event (EV_P_ int fd, int revents)
880{ 951{
881 ANFD *anfd = anfds + fd; 952 ANFD *anfd = anfds + fd;
882 953
883 if (expect_true (!anfd->reify)) 954 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 955 fd_event_nocheck (EV_A_ fd, revents);
885} 956}
886 957
887void 958void
888ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
889{ 960{
890 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
892} 963}
893 964
894/* make sure the external fd watch events are in-sync */ 965/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 966/* with the kernel/libev internal state */
896inline_size void 967inline_size void
902 { 973 {
903 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
905 ev_io *w; 976 ev_io *w;
906 977
907 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
908 980
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 982
912#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
913 if (events) 984 if (o_reify & EV__IOFDSET)
914 { 985 {
915 unsigned long arg; 986 unsigned long arg;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
918 } 990 }
919#endif 991#endif
920 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
921 { 994 {
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events; 995 anfd->events = 0;
927 996
928 if (o_events != events || o_reify & EV__IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1006 }
932 1007
933 fdchangecnt = 0; 1008 fdchangecnt = 0;
934} 1009}
935 1010
959 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 1036 }
962} 1037}
963 1038
964/* check whether the given fd is atcually valid, for error recovery */ 1039/* check whether the given fd is actually valid, for error recovery */
965inline_size int 1040inline_size int
966fd_valid (int fd) 1041fd_valid (int fd)
967{ 1042{
968#ifdef _WIN32 1043#ifdef _WIN32
969 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 1045#else
971 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
972#endif 1047#endif
973} 1048}
974 1049
1011 anfds [fd].emask = 0; 1086 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 1088 }
1014} 1089}
1015 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
1016/*****************************************************************************/ 1105/*****************************************************************************/
1017 1106
1018/* 1107/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
1022 */ 1111 */
1023 1112
1024/* 1113/*
1172 1261
1173static ANSIG signals [EV_NSIG - 1]; 1262static ANSIG signals [EV_NSIG - 1];
1174 1263
1175/*****************************************************************************/ 1264/*****************************************************************************/
1176 1265
1177/* used to prepare libev internal fd's */ 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */
1179inline_speed void
1180fd_intern (int fd)
1181{
1182#ifdef _WIN32
1183 unsigned long arg = 1;
1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 1267
1191static void noinline 1268static void noinline
1192evpipe_init (EV_P) 1269evpipe_init (EV_P)
1193{ 1270{
1194 if (!ev_is_active (&pipe_w)) 1271 if (!ev_is_active (&pipe_w))
1195 { 1272 {
1196#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1198 if (evfd < 0 && errno == EINVAL) 1275 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0); 1276 evfd = eventfd (0, 0);
1200 1277
1201 if (evfd >= 0) 1278 if (evfd >= 0)
1203 evpipe [0] = -1; 1280 evpipe [0] = -1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1205 ev_io_set (&pipe_w, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 1283 }
1207 else 1284 else
1208#endif 1285# endif
1209 { 1286 {
1210 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1211 ev_syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1212 1289
1213 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{ 1302{
1226 if (!*flag) 1303 if (!*flag)
1227 { 1304 {
1228 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1229 1307
1230 *flag = 1; 1308 *flag = 1;
1231 1309
1232#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1233 if (evfd >= 0) 1311 if (evfd >= 0)
1235 uint64_t counter = 1; 1313 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1237 } 1315 }
1238 else 1316 else
1239#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1240 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1241 1324
1242 errno = old_errno; 1325 errno = old_errno;
1243 } 1326 }
1244} 1327}
1245 1328
1258 } 1341 }
1259 else 1342 else
1260#endif 1343#endif
1261 { 1344 {
1262 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1263 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1264 } 1348 }
1265 1349
1266 if (sig_pending) 1350 if (sig_pending)
1267 { 1351 {
1294{ 1378{
1295#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop; 1380 EV_P = signals [signum - 1].loop;
1297#endif 1381#endif
1298 1382
1299#if _WIN32 1383#ifdef _WIN32
1300 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1301#endif 1385#endif
1302 1386
1303 signals [signum - 1].pending = 1; 1387 signals [signum - 1].pending = 1;
1304 evpipe_write (EV_A_ &sig_pending); 1388 evpipe_write (EV_A_ &sig_pending);
1346 break; 1430 break;
1347 } 1431 }
1348} 1432}
1349#endif 1433#endif
1350 1434
1435#endif
1436
1351/*****************************************************************************/ 1437/*****************************************************************************/
1352 1438
1439#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 1441
1357static ev_signal childev; 1442static ev_signal childev;
1358 1443
1359#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1365child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1366{ 1451{
1367 ev_child *w; 1452 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 1454
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 1456 {
1372 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1374 { 1459 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1400 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 1488
1404 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 1492}
1408 1493
1409#endif 1494#endif
1410 1495
1411/*****************************************************************************/ 1496/*****************************************************************************/
1412 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1413#if EV_USE_PORT 1501#if EV_USE_PORT
1414# include "ev_port.c" 1502# include "ev_port.c"
1415#endif 1503#endif
1416#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
1477#ifdef __APPLE__ 1565#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 1566 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1572#endif
1482 1573
1483 return flags; 1574 return flags;
1484} 1575}
1485 1576
1486unsigned int 1577unsigned int
1487ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1488{ 1579{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1490 1581
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1493 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1494 1585
1495 return flags; 1586 return flags;
1496} 1587}
1497 1588
1498unsigned int 1589unsigned int
1499ev_backend (EV_P) 1590ev_backend (EV_P)
1500{ 1591{
1501 return backend; 1592 return backend;
1502} 1593}
1503 1594
1504#if EV_MINIMAL < 2 1595#if EV_FEATURE_API
1505unsigned int 1596unsigned int
1506ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1507{ 1598{
1508 return loop_count; 1599 return loop_count;
1509} 1600}
1510 1601
1511unsigned int 1602unsigned int
1512ev_loop_depth (EV_P) 1603ev_depth (EV_P)
1513{ 1604{
1514 return loop_depth; 1605 return loop_depth;
1515} 1606}
1516 1607
1517void 1608void
1589 1680
1590 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 1682 mn_now = get_clock ();
1592 now_floor = mn_now; 1683 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 1685#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 1686 invoke_cb = ev_invoke_pending;
1596#endif 1687#endif
1597 1688
1598 io_blocktime = 0.; 1689 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1605#endif 1696#endif
1606#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 1699#endif
1609#if EV_USE_SIGNALFD 1700#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 1702#endif
1612 1703
1613 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1614 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1615 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1616#if EV_USE_PORT 1710#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 1712#endif
1619#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 1724#endif
1631 1725
1632 ev_prepare_init (&pending_w, pendingcb); 1726 ev_prepare_init (&pending_w, pendingcb);
1633 1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 1729 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1636 } 1732 }
1637} 1733}
1638 1734
1639/* free up a loop structure */ 1735/* free up a loop structure */
1640static void noinline 1736static void noinline
1670#endif 1766#endif
1671 1767
1672 if (backend_fd >= 0) 1768 if (backend_fd >= 0)
1673 close (backend_fd); 1769 close (backend_fd);
1674 1770
1771#if EV_USE_IOCP
1772 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1773#endif
1675#if EV_USE_PORT 1774#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1775 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 1776#endif
1678#if EV_USE_KQUEUE 1777#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1778 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1758 { 1857 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 1858 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]); 1859 EV_WIN32_CLOSE_FD (evpipe [1]);
1761 } 1860 }
1762 1861
1862#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1763 evpipe_init (EV_A); 1863 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */ 1864 /* now iterate over everything, in case we missed something */
1765 pipecb (EV_A_ &pipe_w, EV_READ); 1865 pipecb (EV_A_ &pipe_w, EV_READ);
1866#endif
1766 } 1867 }
1767 1868
1768 postfork = 0; 1869 postfork = 0;
1769} 1870}
1770 1871
1832 verify_watcher (EV_A_ ws [cnt]); 1933 verify_watcher (EV_A_ ws [cnt]);
1833 } 1934 }
1834} 1935}
1835#endif 1936#endif
1836 1937
1837#if EV_MINIMAL < 2 1938#if EV_FEATURE_API
1838void 1939void
1839ev_loop_verify (EV_P) 1940ev_verify (EV_P)
1840{ 1941{
1841#if EV_VERIFY 1942#if EV_VERIFY
1842 int i; 1943 int i;
1843 WL w; 1944 WL w;
1844 1945
1883#if EV_ASYNC_ENABLE 1984#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 1985 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 1986 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 1987#endif
1887 1988
1989#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 1990 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 1991 array_verify (EV_A_ (W *)prepares, preparecnt);
1992#endif
1890 1993
1994#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 1995 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 1996 array_verify (EV_A_ (W *)checks, checkcnt);
1997#endif
1893 1998
1894# if 0 1999# if 0
2000#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2001 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2002 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2003#endif
1897# endif 2004# endif
1898#endif 2005#endif
1899} 2006}
1900#endif 2007#endif
1901 2008
1902#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1903struct ev_loop * 2010struct ev_loop *
1904ev_default_loop_init (unsigned int flags)
1905#else 2011#else
1906int 2012int
2013#endif
1907ev_default_loop (unsigned int flags) 2014ev_default_loop (unsigned int flags)
1908#endif
1909{ 2015{
1910 if (!ev_default_loop_ptr) 2016 if (!ev_default_loop_ptr)
1911 { 2017 {
1912#if EV_MULTIPLICITY 2018#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 2019 EV_P = ev_default_loop_ptr = &default_loop_struct;
1917 2023
1918 loop_init (EV_A_ flags); 2024 loop_init (EV_A_ flags);
1919 2025
1920 if (ev_backend (EV_A)) 2026 if (ev_backend (EV_A))
1921 { 2027 {
1922#ifndef _WIN32 2028#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 2029 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 2030 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 2031 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2032 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 2033#endif
1940 EV_P = ev_default_loop_ptr; 2046 EV_P = ev_default_loop_ptr;
1941#endif 2047#endif
1942 2048
1943 ev_default_loop_ptr = 0; 2049 ev_default_loop_ptr = 0;
1944 2050
1945#ifndef _WIN32 2051#if EV_CHILD_ENABLE
1946 ev_ref (EV_A); /* child watcher */ 2052 ev_ref (EV_A); /* child watcher */
1947 ev_signal_stop (EV_A_ &childev); 2053 ev_signal_stop (EV_A_ &childev);
1948#endif 2054#endif
1949 2055
1950 loop_destroy (EV_A); 2056 loop_destroy (EV_A);
2056 EV_FREQUENT_CHECK; 2162 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 2163 feed_reverse (EV_A_ (W)w);
2058 } 2164 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2165 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 2166
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 2167 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 2168 }
2063} 2169}
2064 2170
2065#if EV_PERIODIC_ENABLE 2171#if EV_PERIODIC_ENABLE
2066/* make periodics pending */ 2172/* make periodics pending */
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 2225 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 2226 }
2121} 2227}
2122 2228
2123/* simply recalculate all periodics */ 2229/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2230/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 2231static void noinline
2126periodics_reschedule (EV_P) 2232periodics_reschedule (EV_P)
2127{ 2233{
2128 int i; 2234 int i;
2129 2235
2157 ANHE_at_cache (*he); 2263 ANHE_at_cache (*he);
2158 } 2264 }
2159} 2265}
2160 2266
2161/* fetch new monotonic and realtime times from the kernel */ 2267/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 2268/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 2269inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 2270time_update (EV_P_ ev_tstamp max_block)
2165{ 2271{
2166#if EV_USE_MONOTONIC 2272#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 2273 if (expect_true (have_monotonic))
2225 mn_now = ev_rt_now; 2331 mn_now = ev_rt_now;
2226 } 2332 }
2227} 2333}
2228 2334
2229void 2335void
2230ev_loop (EV_P_ int flags) 2336ev_run (EV_P_ int flags)
2231{ 2337{
2232#if EV_MINIMAL < 2 2338#if EV_FEATURE_API
2233 ++loop_depth; 2339 ++loop_depth;
2234#endif 2340#endif
2235 2341
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2342 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 2343
2238 loop_done = EVUNLOOP_CANCEL; 2344 loop_done = EVBREAK_CANCEL;
2239 2345
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2346 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 2347
2242 do 2348 do
2243 { 2349 {
2244#if EV_VERIFY >= 2 2350#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 2351 ev_verify (EV_A);
2246#endif 2352#endif
2247 2353
2248#ifndef _WIN32 2354#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 2355 if (expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 2356 if (expect_false (getpid () != curpid))
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2368 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 2369 EV_INVOKE_PENDING;
2264 } 2370 }
2265#endif 2371#endif
2266 2372
2373#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 2374 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 2375 if (expect_false (preparecnt))
2269 { 2376 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2377 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 2378 EV_INVOKE_PENDING;
2272 } 2379 }
2380#endif
2273 2381
2274 if (expect_false (loop_done)) 2382 if (expect_false (loop_done))
2275 break; 2383 break;
2276 2384
2277 /* we might have forked, so reify kernel state if necessary */ 2385 /* we might have forked, so reify kernel state if necessary */
2284 /* calculate blocking time */ 2392 /* calculate blocking time */
2285 { 2393 {
2286 ev_tstamp waittime = 0.; 2394 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 2395 ev_tstamp sleeptime = 0.;
2288 2396
2397 /* remember old timestamp for io_blocktime calculation */
2398 ev_tstamp prev_mn_now = mn_now;
2399
2400 /* update time to cancel out callback processing overhead */
2401 time_update (EV_A_ 1e100);
2402
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2403 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2290 { 2404 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
2294 /* update time to cancel out callback processing overhead */
2295 time_update (EV_A_ 1e100);
2296
2297 waittime = MAX_BLOCKTIME; 2405 waittime = MAX_BLOCKTIME;
2298 2406
2299 if (timercnt) 2407 if (timercnt)
2300 { 2408 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2328 waittime -= sleeptime; 2436 waittime -= sleeptime;
2329 } 2437 }
2330 } 2438 }
2331 } 2439 }
2332 2440
2333#if EV_MINIMAL < 2 2441#if EV_FEATURE_API
2334 ++loop_count; 2442 ++loop_count;
2335#endif 2443#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 2445 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2339 2447
2340 /* update ev_rt_now, do magic */ 2448 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 2449 time_update (EV_A_ waittime + sleeptime);
2342 } 2450 }
2343 2451
2350#if EV_IDLE_ENABLE 2458#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 2459 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 2460 idle_reify (EV_A);
2353#endif 2461#endif
2354 2462
2463#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 2464 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 2465 if (expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2466 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2467#endif
2358 2468
2359 EV_INVOKE_PENDING; 2469 EV_INVOKE_PENDING;
2360 } 2470 }
2361 while (expect_true ( 2471 while (expect_true (
2362 activecnt 2472 activecnt
2363 && !loop_done 2473 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2474 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 2475 ));
2366 2476
2367 if (loop_done == EVUNLOOP_ONE) 2477 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 2478 loop_done = EVBREAK_CANCEL;
2369 2479
2370#if EV_MINIMAL < 2 2480#if EV_FEATURE_API
2371 --loop_depth; 2481 --loop_depth;
2372#endif 2482#endif
2373} 2483}
2374 2484
2375void 2485void
2376ev_unloop (EV_P_ int how) 2486ev_break (EV_P_ int how)
2377{ 2487{
2378 loop_done = how; 2488 loop_done = how;
2379} 2489}
2380 2490
2381void 2491void
2501 2611
2502 if (expect_false (ev_is_active (w))) 2612 if (expect_false (ev_is_active (w)))
2503 return; 2613 return;
2504 2614
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2615 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2616 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 2617
2508 EV_FREQUENT_CHECK; 2618 EV_FREQUENT_CHECK;
2509 2619
2510 ev_start (EV_A_ (W)w, 1); 2620 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2621 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2529 EV_FREQUENT_CHECK; 2639 EV_FREQUENT_CHECK;
2530 2640
2531 wlist_del (&anfds[w->fd].head, (WL)w); 2641 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 2642 ev_stop (EV_A_ (W)w);
2533 2643
2534 fd_change (EV_A_ w->fd, 1); 2644 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 2645
2536 EV_FREQUENT_CHECK; 2646 EV_FREQUENT_CHECK;
2537} 2647}
2538 2648
2539void noinline 2649void noinline
2581 timers [active] = timers [timercnt + HEAP0]; 2691 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 2692 adjustheap (timers, timercnt, active);
2583 } 2693 }
2584 } 2694 }
2585 2695
2586 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now; 2696 ev_at (w) -= mn_now;
2589 2697
2590 ev_stop (EV_A_ (W)w); 2698 ev_stop (EV_A_ (W)w);
2699
2700 EV_FREQUENT_CHECK;
2591} 2701}
2592 2702
2593void noinline 2703void noinline
2594ev_timer_again (EV_P_ ev_timer *w) 2704ev_timer_again (EV_P_ ev_timer *w)
2595{ 2705{
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 2784 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 2785 adjustheap (periodics, periodiccnt, active);
2676 } 2786 }
2677 } 2787 }
2678 2788
2679 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w); 2789 ev_stop (EV_A_ (W)w);
2790
2791 EV_FREQUENT_CHECK;
2682} 2792}
2683 2793
2684void noinline 2794void noinline
2685ev_periodic_again (EV_P_ ev_periodic *w) 2795ev_periodic_again (EV_P_ ev_periodic *w)
2686{ 2796{
2691#endif 2801#endif
2692 2802
2693#ifndef SA_RESTART 2803#ifndef SA_RESTART
2694# define SA_RESTART 0 2804# define SA_RESTART 0
2695#endif 2805#endif
2806
2807#if EV_SIGNAL_ENABLE
2696 2808
2697void noinline 2809void noinline
2698ev_signal_start (EV_P_ ev_signal *w) 2810ev_signal_start (EV_P_ ev_signal *w)
2699{ 2811{
2700 if (expect_false (ev_is_active (w))) 2812 if (expect_false (ev_is_active (w)))
2747 if (!((WL)w)->next) 2859 if (!((WL)w)->next)
2748# if EV_USE_SIGNALFD 2860# if EV_USE_SIGNALFD
2749 if (sigfd < 0) /*TODO*/ 2861 if (sigfd < 0) /*TODO*/
2750# endif 2862# endif
2751 { 2863 {
2752# if _WIN32 2864# ifdef _WIN32
2753 evpipe_init (EV_A); 2865 evpipe_init (EV_A);
2754 2866
2755 signal (w->signum, ev_sighandler); 2867 signal (w->signum, ev_sighandler);
2756# else 2868# else
2757 struct sigaction sa; 2869 struct sigaction sa;
2790 signals [w->signum - 1].loop = 0; /* unattach from signal */ 2902 signals [w->signum - 1].loop = 0; /* unattach from signal */
2791#endif 2903#endif
2792#if EV_USE_SIGNALFD 2904#if EV_USE_SIGNALFD
2793 if (sigfd >= 0) 2905 if (sigfd >= 0)
2794 { 2906 {
2795 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 2907 sigset_t ss;
2908
2909 sigemptyset (&ss);
2910 sigaddset (&ss, w->signum);
2796 sigdelset (&sigfd_set, w->signum); 2911 sigdelset (&sigfd_set, w->signum);
2912
2797 signalfd (sigfd, &sigfd_set, 0); 2913 signalfd (sigfd, &sigfd_set, 0);
2798 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 2914 sigprocmask (SIG_UNBLOCK, &ss, 0);
2799 /*TODO: maybe unblock signal? */
2800 } 2915 }
2801 else 2916 else
2802#endif 2917#endif
2803 signal (w->signum, SIG_DFL); 2918 signal (w->signum, SIG_DFL);
2804 } 2919 }
2805 2920
2806 EV_FREQUENT_CHECK; 2921 EV_FREQUENT_CHECK;
2807} 2922}
2808 2923
2924#endif
2925
2926#if EV_CHILD_ENABLE
2927
2809void 2928void
2810ev_child_start (EV_P_ ev_child *w) 2929ev_child_start (EV_P_ ev_child *w)
2811{ 2930{
2812#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2813 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2932 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2816 return; 2935 return;
2817 2936
2818 EV_FREQUENT_CHECK; 2937 EV_FREQUENT_CHECK;
2819 2938
2820 ev_start (EV_A_ (W)w, 1); 2939 ev_start (EV_A_ (W)w, 1);
2821 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2940 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2822 2941
2823 EV_FREQUENT_CHECK; 2942 EV_FREQUENT_CHECK;
2824} 2943}
2825 2944
2826void 2945void
2830 if (expect_false (!ev_is_active (w))) 2949 if (expect_false (!ev_is_active (w)))
2831 return; 2950 return;
2832 2951
2833 EV_FREQUENT_CHECK; 2952 EV_FREQUENT_CHECK;
2834 2953
2835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2954 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2836 ev_stop (EV_A_ (W)w); 2955 ev_stop (EV_A_ (W)w);
2837 2956
2838 EV_FREQUENT_CHECK; 2957 EV_FREQUENT_CHECK;
2839} 2958}
2959
2960#endif
2840 2961
2841#if EV_STAT_ENABLE 2962#if EV_STAT_ENABLE
2842 2963
2843# ifdef _WIN32 2964# ifdef _WIN32
2844# undef lstat 2965# undef lstat
2850#define MIN_STAT_INTERVAL 0.1074891 2971#define MIN_STAT_INTERVAL 0.1074891
2851 2972
2852static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2973static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2853 2974
2854#if EV_USE_INOTIFY 2975#if EV_USE_INOTIFY
2855# define EV_INOTIFY_BUFSIZE 8192 2976
2977/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2978# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2856 2979
2857static void noinline 2980static void noinline
2858infy_add (EV_P_ ev_stat *w) 2981infy_add (EV_P_ ev_stat *w)
2859{ 2982{
2860 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2983 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2909 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3032 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2910 } 3033 }
2911 } 3034 }
2912 3035
2913 if (w->wd >= 0) 3036 if (w->wd >= 0)
2914 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3037 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2915 3038
2916 /* now re-arm timer, if required */ 3039 /* now re-arm timer, if required */
2917 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3040 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2918 ev_timer_again (EV_A_ &w->timer); 3041 ev_timer_again (EV_A_ &w->timer);
2919 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3042 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2927 3050
2928 if (wd < 0) 3051 if (wd < 0)
2929 return; 3052 return;
2930 3053
2931 w->wd = -2; 3054 w->wd = -2;
2932 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3055 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2933 wlist_del (&fs_hash [slot].head, (WL)w); 3056 wlist_del (&fs_hash [slot].head, (WL)w);
2934 3057
2935 /* remove this watcher, if others are watching it, they will rearm */ 3058 /* remove this watcher, if others are watching it, they will rearm */
2936 inotify_rm_watch (fs_fd, wd); 3059 inotify_rm_watch (fs_fd, wd);
2937} 3060}
2939static void noinline 3062static void noinline
2940infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3063infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2941{ 3064{
2942 if (slot < 0) 3065 if (slot < 0)
2943 /* overflow, need to check for all hash slots */ 3066 /* overflow, need to check for all hash slots */
2944 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3067 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2945 infy_wd (EV_A_ slot, wd, ev); 3068 infy_wd (EV_A_ slot, wd, ev);
2946 else 3069 else
2947 { 3070 {
2948 WL w_; 3071 WL w_;
2949 3072
2950 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3073 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2951 { 3074 {
2952 ev_stat *w = (ev_stat *)w_; 3075 ev_stat *w = (ev_stat *)w_;
2953 w_ = w_->next; /* lets us remove this watcher and all before it */ 3076 w_ = w_->next; /* lets us remove this watcher and all before it */
2954 3077
2955 if (w->wd == wd || wd == -1) 3078 if (w->wd == wd || wd == -1)
2956 { 3079 {
2957 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3080 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2958 { 3081 {
2959 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3082 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2960 w->wd = -1; 3083 w->wd = -1;
2961 infy_add (EV_A_ w); /* re-add, no matter what */ 3084 infy_add (EV_A_ w); /* re-add, no matter what */
2962 } 3085 }
2963 3086
2964 stat_timer_cb (EV_A_ &w->timer, 0); 3087 stat_timer_cb (EV_A_ &w->timer, 0);
2969 3092
2970static void 3093static void
2971infy_cb (EV_P_ ev_io *w, int revents) 3094infy_cb (EV_P_ ev_io *w, int revents)
2972{ 3095{
2973 char buf [EV_INOTIFY_BUFSIZE]; 3096 char buf [EV_INOTIFY_BUFSIZE];
2974 struct inotify_event *ev = (struct inotify_event *)buf;
2975 int ofs; 3097 int ofs;
2976 int len = read (fs_fd, buf, sizeof (buf)); 3098 int len = read (fs_fd, buf, sizeof (buf));
2977 3099
2978 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3100 for (ofs = 0; ofs < len; )
3101 {
3102 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2979 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3103 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3104 ofs += sizeof (struct inotify_event) + ev->len;
3105 }
2980} 3106}
2981 3107
2982inline_size void 3108inline_size void
2983check_2625 (EV_P) 3109ev_check_2625 (EV_P)
2984{ 3110{
2985 /* kernels < 2.6.25 are borked 3111 /* kernels < 2.6.25 are borked
2986 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3112 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2987 */ 3113 */
2988 struct utsname buf; 3114 if (ev_linux_version () < 0x020619)
2989 int major, minor, micro;
2990
2991 if (uname (&buf))
2992 return;
2993
2994 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2995 return;
2996
2997 if (major < 2
2998 || (major == 2 && minor < 6)
2999 || (major == 2 && minor == 6 && micro < 25))
3000 return; 3115 return;
3001 3116
3002 fs_2625 = 1; 3117 fs_2625 = 1;
3003} 3118}
3004 3119
3019 if (fs_fd != -2) 3134 if (fs_fd != -2)
3020 return; 3135 return;
3021 3136
3022 fs_fd = -1; 3137 fs_fd = -1;
3023 3138
3024 check_2625 (EV_A); 3139 ev_check_2625 (EV_A);
3025 3140
3026 fs_fd = infy_newfd (); 3141 fs_fd = infy_newfd ();
3027 3142
3028 if (fs_fd >= 0) 3143 if (fs_fd >= 0)
3029 { 3144 {
3054 ev_io_set (&fs_w, fs_fd, EV_READ); 3169 ev_io_set (&fs_w, fs_fd, EV_READ);
3055 ev_io_start (EV_A_ &fs_w); 3170 ev_io_start (EV_A_ &fs_w);
3056 ev_unref (EV_A); 3171 ev_unref (EV_A);
3057 } 3172 }
3058 3173
3059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3174 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3060 { 3175 {
3061 WL w_ = fs_hash [slot].head; 3176 WL w_ = fs_hash [slot].head;
3062 fs_hash [slot].head = 0; 3177 fs_hash [slot].head = 0;
3063 3178
3064 while (w_) 3179 while (w_)
3101static void noinline 3216static void noinline
3102stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3217stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3103{ 3218{
3104 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3219 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3105 3220
3106 /* we copy this here each the time so that */ 3221 ev_statdata prev = w->attr;
3107 /* prev has the old value when the callback gets invoked */
3108 w->prev = w->attr;
3109 ev_stat_stat (EV_A_ w); 3222 ev_stat_stat (EV_A_ w);
3110 3223
3111 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3224 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3112 if ( 3225 if (
3113 w->prev.st_dev != w->attr.st_dev 3226 prev.st_dev != w->attr.st_dev
3114 || w->prev.st_ino != w->attr.st_ino 3227 || prev.st_ino != w->attr.st_ino
3115 || w->prev.st_mode != w->attr.st_mode 3228 || prev.st_mode != w->attr.st_mode
3116 || w->prev.st_nlink != w->attr.st_nlink 3229 || prev.st_nlink != w->attr.st_nlink
3117 || w->prev.st_uid != w->attr.st_uid 3230 || prev.st_uid != w->attr.st_uid
3118 || w->prev.st_gid != w->attr.st_gid 3231 || prev.st_gid != w->attr.st_gid
3119 || w->prev.st_rdev != w->attr.st_rdev 3232 || prev.st_rdev != w->attr.st_rdev
3120 || w->prev.st_size != w->attr.st_size 3233 || prev.st_size != w->attr.st_size
3121 || w->prev.st_atime != w->attr.st_atime 3234 || prev.st_atime != w->attr.st_atime
3122 || w->prev.st_mtime != w->attr.st_mtime 3235 || prev.st_mtime != w->attr.st_mtime
3123 || w->prev.st_ctime != w->attr.st_ctime 3236 || prev.st_ctime != w->attr.st_ctime
3124 ) { 3237 ) {
3238 /* we only update w->prev on actual differences */
3239 /* in case we test more often than invoke the callback, */
3240 /* to ensure that prev is always different to attr */
3241 w->prev = prev;
3242
3125 #if EV_USE_INOTIFY 3243 #if EV_USE_INOTIFY
3126 if (fs_fd >= 0) 3244 if (fs_fd >= 0)
3127 { 3245 {
3128 infy_del (EV_A_ w); 3246 infy_del (EV_A_ w);
3129 infy_add (EV_A_ w); 3247 infy_add (EV_A_ w);
3236 3354
3237 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
3238} 3356}
3239#endif 3357#endif
3240 3358
3359#if EV_PREPARE_ENABLE
3241void 3360void
3242ev_prepare_start (EV_P_ ev_prepare *w) 3361ev_prepare_start (EV_P_ ev_prepare *w)
3243{ 3362{
3244 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
3245 return; 3364 return;
3271 3390
3272 ev_stop (EV_A_ (W)w); 3391 ev_stop (EV_A_ (W)w);
3273 3392
3274 EV_FREQUENT_CHECK; 3393 EV_FREQUENT_CHECK;
3275} 3394}
3395#endif
3276 3396
3397#if EV_CHECK_ENABLE
3277void 3398void
3278ev_check_start (EV_P_ ev_check *w) 3399ev_check_start (EV_P_ ev_check *w)
3279{ 3400{
3280 if (expect_false (ev_is_active (w))) 3401 if (expect_false (ev_is_active (w)))
3281 return; 3402 return;
3307 3428
3308 ev_stop (EV_A_ (W)w); 3429 ev_stop (EV_A_ (W)w);
3309 3430
3310 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
3311} 3432}
3433#endif
3312 3434
3313#if EV_EMBED_ENABLE 3435#if EV_EMBED_ENABLE
3314void noinline 3436void noinline
3315ev_embed_sweep (EV_P_ ev_embed *w) 3437ev_embed_sweep (EV_P_ ev_embed *w)
3316{ 3438{
3317 ev_loop (w->other, EVLOOP_NONBLOCK); 3439 ev_run (w->other, EVRUN_NOWAIT);
3318} 3440}
3319 3441
3320static void 3442static void
3321embed_io_cb (EV_P_ ev_io *io, int revents) 3443embed_io_cb (EV_P_ ev_io *io, int revents)
3322{ 3444{
3323 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3445 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3324 3446
3325 if (ev_cb (w)) 3447 if (ev_cb (w))
3326 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3448 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3327 else 3449 else
3328 ev_loop (w->other, EVLOOP_NONBLOCK); 3450 ev_run (w->other, EVRUN_NOWAIT);
3329} 3451}
3330 3452
3331static void 3453static void
3332embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3454embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3333{ 3455{
3337 EV_P = w->other; 3459 EV_P = w->other;
3338 3460
3339 while (fdchangecnt) 3461 while (fdchangecnt)
3340 { 3462 {
3341 fd_reify (EV_A); 3463 fd_reify (EV_A);
3342 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3464 ev_run (EV_A_ EVRUN_NOWAIT);
3343 } 3465 }
3344 } 3466 }
3345} 3467}
3346 3468
3347static void 3469static void
3353 3475
3354 { 3476 {
3355 EV_P = w->other; 3477 EV_P = w->other;
3356 3478
3357 ev_loop_fork (EV_A); 3479 ev_loop_fork (EV_A);
3358 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3480 ev_run (EV_A_ EVRUN_NOWAIT);
3359 } 3481 }
3360 3482
3361 ev_embed_start (EV_A_ w); 3483 ev_embed_start (EV_A_ w);
3362} 3484}
3363 3485
3411 3533
3412 ev_io_stop (EV_A_ &w->io); 3534 ev_io_stop (EV_A_ &w->io);
3413 ev_prepare_stop (EV_A_ &w->prepare); 3535 ev_prepare_stop (EV_A_ &w->prepare);
3414 ev_fork_stop (EV_A_ &w->fork); 3536 ev_fork_stop (EV_A_ &w->fork);
3415 3537
3538 ev_stop (EV_A_ (W)w);
3539
3416 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
3417} 3541}
3418#endif 3542#endif
3419 3543
3420#if EV_FORK_ENABLE 3544#if EV_FORK_ENABLE
3459void 3583void
3460ev_async_start (EV_P_ ev_async *w) 3584ev_async_start (EV_P_ ev_async *w)
3461{ 3585{
3462 if (expect_false (ev_is_active (w))) 3586 if (expect_false (ev_is_active (w)))
3463 return; 3587 return;
3588
3589 w->sent = 0;
3464 3590
3465 evpipe_init (EV_A); 3591 evpipe_init (EV_A);
3466 3592
3467 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
3468 3594
3546{ 3672{
3547 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3673 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3548 3674
3549 if (expect_false (!once)) 3675 if (expect_false (!once))
3550 { 3676 {
3551 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3677 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3552 return; 3678 return;
3553 } 3679 }
3554 3680
3555 once->cb = cb; 3681 once->cb = cb;
3556 once->arg = arg; 3682 once->arg = arg;
3643 if (types & EV_ASYNC) 3769 if (types & EV_ASYNC)
3644 for (i = asynccnt; i--; ) 3770 for (i = asynccnt; i--; )
3645 cb (EV_A_ EV_ASYNC, asyncs [i]); 3771 cb (EV_A_ EV_ASYNC, asyncs [i]);
3646#endif 3772#endif
3647 3773
3774#if EV_PREPARE_ENABLE
3648 if (types & EV_PREPARE) 3775 if (types & EV_PREPARE)
3649 for (i = preparecnt; i--; ) 3776 for (i = preparecnt; i--; )
3650#if EV_EMBED_ENABLE 3777# if EV_EMBED_ENABLE
3651 if (ev_cb (prepares [i]) != embed_prepare_cb) 3778 if (ev_cb (prepares [i]) != embed_prepare_cb)
3652#endif 3779# endif
3653 cb (EV_A_ EV_PREPARE, prepares [i]); 3780 cb (EV_A_ EV_PREPARE, prepares [i]);
3781#endif
3654 3782
3783#if EV_CHECK_ENABLE
3655 if (types & EV_CHECK) 3784 if (types & EV_CHECK)
3656 for (i = checkcnt; i--; ) 3785 for (i = checkcnt; i--; )
3657 cb (EV_A_ EV_CHECK, checks [i]); 3786 cb (EV_A_ EV_CHECK, checks [i]);
3787#endif
3658 3788
3789#if EV_SIGNAL_ENABLE
3659 if (types & EV_SIGNAL) 3790 if (types & EV_SIGNAL)
3660 for (i = 0; i < EV_NSIG - 1; ++i) 3791 for (i = 0; i < EV_NSIG - 1; ++i)
3661 for (wl = signals [i].head; wl; ) 3792 for (wl = signals [i].head; wl; )
3662 { 3793 {
3663 wn = wl->next; 3794 wn = wl->next;
3664 cb (EV_A_ EV_SIGNAL, wl); 3795 cb (EV_A_ EV_SIGNAL, wl);
3665 wl = wn; 3796 wl = wn;
3666 } 3797 }
3798#endif
3667 3799
3800#if EV_CHILD_ENABLE
3668 if (types & EV_CHILD) 3801 if (types & EV_CHILD)
3669 for (i = EV_PID_HASHSIZE; i--; ) 3802 for (i = (EV_PID_HASHSIZE); i--; )
3670 for (wl = childs [i]; wl; ) 3803 for (wl = childs [i]; wl; )
3671 { 3804 {
3672 wn = wl->next; 3805 wn = wl->next;
3673 cb (EV_A_ EV_CHILD, wl); 3806 cb (EV_A_ EV_CHILD, wl);
3674 wl = wn; 3807 wl = wn;
3675 } 3808 }
3809#endif
3676/* EV_STAT 0x00001000 /* stat data changed */ 3810/* EV_STAT 0x00001000 /* stat data changed */
3677/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3811/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3678} 3812}
3679#endif 3813#endif
3680 3814
3681#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
3682 #include "ev_wrap.h" 3816 #include "ev_wrap.h"
3683#endif 3817#endif
3684 3818
3685#ifdef __cplusplus 3819EV_CPP(})
3686}
3687#endif
3688 3820

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