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Comparing libev/ev.c (file contents):
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC vs.
Revision 1.344 by root, Fri Jul 9 20:55:14 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 *
77# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
79# endif 79# endif
80# endif 80# endif
81 81
82# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
85# else 86# else
87# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
88# endif 98# endif
89 99
100# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 103# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 104# else
105# undef EV_USE_POLL
102# define EV_USE_POLL 0 106# define EV_USE_POLL 0
103# endif
104# endif 107# endif
105 108
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
109# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
112# endif 116# endif
113 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
120# endif 125# endif
121 126
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
125# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
128# endif 134# endif
129 135
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
136# endif 143# endif
137 144
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 146# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 147# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
144# endif 152# endif
145 153
154# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 155# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 156# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
152# endif 161# endif
153 162
154#endif 163#endif
155 164
156#include <math.h> 165#include <math.h>
157#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
158#include <fcntl.h> 168#include <fcntl.h>
159#include <stddef.h> 169#include <stddef.h>
160 170
161#include <stdio.h> 171#include <stdio.h>
162 172
163#include <assert.h> 173#include <assert.h>
164#include <errno.h> 174#include <errno.h>
165#include <sys/types.h> 175#include <sys/types.h>
166#include <time.h> 176#include <time.h>
177#include <limits.h>
167 178
168#include <signal.h> 179#include <signal.h>
169 180
170#ifdef EV_H 181#ifdef EV_H
171# include EV_H 182# include EV_H
182# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 194# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
186# endif 197# endif
198# undef EV_AVOID_STDIO
187#endif 199#endif
200
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
188 208
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
190 210
191/* try to deduce the maximum number of signals on this platform */ 211/* try to deduce the maximum number of signals on this platform */
192/* one some platforms, NSIG is one too large. we do not bother */
193#if defined (EV_NSIG) 212#if defined (EV_NSIG)
194/* use what's provided */ 213/* use what's provided */
195#elif defined (NSIG) 214#elif defined (NSIG)
196# define EV_NSIG (NSIG) 215# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 216#elif defined(_NSIG)
205#elif defined (MAXSIG) 224#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1) 225# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 226#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1) 227# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 228#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 230#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 232#else
214# error "unable to find value for NSIG, please report" 233# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */ 234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
216# define EV_NSIG 65 236# define EV_NSIG 65
217#endif 237#endif
218 238
219#ifndef EV_USE_CLOCK_SYSCALL 239#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 240# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 242# else
223# define EV_USE_CLOCK_SYSCALL 0 243# define EV_USE_CLOCK_SYSCALL 0
224# endif 244# endif
225#endif 245#endif
226 246
227#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 250# else
231# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
232# endif 252# endif
233#endif 253#endif
234 254
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 257#endif
238 258
239#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 262# else
243# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
244# endif 264# endif
245#endif 265#endif
246 266
247#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 269#endif
250 270
251#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
252# ifdef _WIN32 272# ifdef _WIN32
253# define EV_USE_POLL 0 273# define EV_USE_POLL 0
254# else 274# else
255# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 276# endif
257#endif 277#endif
258 278
259#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 282# else
263# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
264# endif 284# endif
265#endif 285#endif
266 286
272# define EV_USE_PORT 0 292# define EV_USE_PORT 0
273#endif 293#endif
274 294
275#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 298# else
279# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
280# endif 300# endif
281#endif 301#endif
282 302
283#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 304# 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 305#endif
290 306
291#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 308# 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 309#endif
298 310
299#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 314# else
303# define EV_USE_EVENTFD 0 315# define EV_USE_EVENTFD 0
304# endif 316# endif
305#endif 317#endif
306 318
307#ifndef EV_USE_SIGNALFD 319#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 320# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 321# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 322# else
311# define EV_USE_SIGNALFD 0 323# define EV_USE_SIGNALFD 0
312# endif 324# endif
313#endif 325#endif
314 326
317# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
319#endif 331#endif
320 332
321#ifndef EV_VERIFY 333#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 335#endif
324 336
325#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 339#endif
328 340
329#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 343#endif
332 344
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 345/* 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. */ 346/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 347#if EV_USE_CLOCK_SYSCALL
344# endif 356# endif
345#endif 357#endif
346 358
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 359/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348 360
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
349#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
350# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
351# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
352#endif 370#endif
353 371
387# include <stdint.h> 405# include <stdint.h>
388# ifndef EFD_NONBLOCK 406# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK 407# define EFD_NONBLOCK O_NONBLOCK
390# endif 408# endif
391# ifndef EFD_CLOEXEC 409# ifndef EFD_CLOEXEC
410# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC 411# define EFD_CLOEXEC O_CLOEXEC
412# else
413# define EFD_CLOEXEC 02000000
414# endif
393# endif 415# endif
394# ifdef __cplusplus 416# ifdef __cplusplus
395extern "C" { 417extern "C" {
396# endif 418# endif
397int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
398# ifdef __cplusplus 420# ifdef __cplusplus
399} 421}
400# endif 422# endif
401#endif 423#endif
402 424
403#if EV_USE_SIGNALFD 425#if EV_USE_SIGNALFD
404# include <sys/signalfd.h> 426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h>
428# ifndef SFD_NONBLOCK
429# define SFD_NONBLOCK O_NONBLOCK
405#endif 430# endif
431# ifndef SFD_CLOEXEC
432# ifdef O_CLOEXEC
433# define SFD_CLOEXEC O_CLOEXEC
434# else
435# define SFD_CLOEXEC 02000000
436# endif
437# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags);
442
443struct signalfd_siginfo
444{
445 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)];
447};
448# ifdef __cplusplus
449}
450# endif
451#endif
452
406 453
407/**/ 454/**/
408 455
409#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
410# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
411#else 458#else
412# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
413#endif 460#endif
414 461
415/* 462/*
422 */ 469 */
423#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
424 471
425#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
426#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
427/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
428 474
429#if __GNUC__ >= 4 475#if __GNUC__ >= 4
430# define expect(expr,value) __builtin_expect ((expr),(value)) 476# define expect(expr,value) __builtin_expect ((expr),(value))
431# define noinline __attribute__ ((noinline)) 477# define noinline __attribute__ ((noinline))
432#else 478#else
439 485
440#define expect_false(expr) expect ((expr) != 0, 0) 486#define expect_false(expr) expect ((expr) != 0, 0)
441#define expect_true(expr) expect ((expr) != 0, 1) 487#define expect_true(expr) expect ((expr) != 0, 1)
442#define inline_size static inline 488#define inline_size static inline
443 489
444#if EV_MINIMAL 490#if EV_FEATURE_CODE
491# define inline_speed static inline
492#else
445# define inline_speed static noinline 493# define inline_speed static noinline
446#else
447# define inline_speed static inline
448#endif 494#endif
449 495
450#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
451 497
452#if EV_MINPRI == EV_MAXPRI 498#if EV_MINPRI == EV_MAXPRI
473 519
474#if EV_USE_MONOTONIC 520#if EV_USE_MONOTONIC
475static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
476#endif 522#endif
477 523
524#ifndef EV_FD_TO_WIN32_HANDLE
525# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
526#endif
527#ifndef EV_WIN32_HANDLE_TO_FD
528# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
529#endif
530#ifndef EV_WIN32_CLOSE_FD
531# define EV_WIN32_CLOSE_FD(fd) close (fd)
532#endif
533
478#ifdef _WIN32 534#ifdef _WIN32
479# include "ev_win32.c" 535# include "ev_win32.c"
480#endif 536#endif
481 537
482/*****************************************************************************/ 538/*****************************************************************************/
539
540#if EV_AVOID_STDIO
541static void noinline
542ev_printerr (const char *msg)
543{
544 write (STDERR_FILENO, msg, strlen (msg));
545}
546#endif
483 547
484static void (*syserr_cb)(const char *msg); 548static void (*syserr_cb)(const char *msg);
485 549
486void 550void
487ev_set_syserr_cb (void (*cb)(const char *msg)) 551ev_set_syserr_cb (void (*cb)(const char *msg))
497 561
498 if (syserr_cb) 562 if (syserr_cb)
499 syserr_cb (msg); 563 syserr_cb (msg);
500 else 564 else
501 { 565 {
566#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg);
570 ev_printerr (": ");
571 ev_printerr (err);
572 ev_printerr ("\n");
573#else
502 perror (msg); 574 perror (msg);
575#endif
503 abort (); 576 abort ();
504 } 577 }
505} 578}
506 579
507static void * 580static void *
508ev_realloc_emul (void *ptr, long size) 581ev_realloc_emul (void *ptr, long size)
509{ 582{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
510 /* some systems, notably openbsd and darwin, fail to properly 586 /* some systems, notably openbsd and darwin, fail to properly
511 * implement realloc (x, 0) (as required by both ansi c-98 and 587 * implement realloc (x, 0) (as required by both ansi c-89 and
512 * the single unix specification, so work around them here. 588 * the single unix specification, so work around them here.
513 */ 589 */
514 590
515 if (size) 591 if (size)
516 return realloc (ptr, size); 592 return realloc (ptr, size);
517 593
518 free (ptr); 594 free (ptr);
519 return 0; 595 return 0;
596#endif
520} 597}
521 598
522static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
523 600
524void 601void
532{ 609{
533 ptr = alloc (ptr, size); 610 ptr = alloc (ptr, size);
534 611
535 if (!ptr && size) 612 if (!ptr && size)
536 { 613 {
614#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n");
616#else
537 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
618#endif
538 abort (); 619 abort ();
539 } 620 }
540 621
541 return ptr; 622 return ptr;
542} 623}
624 705
625 static int ev_default_loop_ptr; 706 static int ev_default_loop_ptr;
626 707
627#endif 708#endif
628 709
629#if EV_MINIMAL < 2 710#if EV_FEATURE_API
630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 711# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 712# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
632# define EV_INVOKE_PENDING invoke_cb (EV_A) 713# define EV_INVOKE_PENDING invoke_cb (EV_A)
633#else 714#else
634# define EV_RELEASE_CB (void)0 715# define EV_RELEASE_CB (void)0
819} 900}
820 901
821/*****************************************************************************/ 902/*****************************************************************************/
822 903
823inline_speed void 904inline_speed void
824fd_event_nc (EV_P_ int fd, int revents) 905fd_event_nocheck (EV_P_ int fd, int revents)
825{ 906{
826 ANFD *anfd = anfds + fd; 907 ANFD *anfd = anfds + fd;
827 ev_io *w; 908 ev_io *w;
828 909
829 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
841fd_event (EV_P_ int fd, int revents) 922fd_event (EV_P_ int fd, int revents)
842{ 923{
843 ANFD *anfd = anfds + fd; 924 ANFD *anfd = anfds + fd;
844 925
845 if (expect_true (!anfd->reify)) 926 if (expect_true (!anfd->reify))
846 fd_event_nc (EV_A_ fd, revents); 927 fd_event_nocheck (EV_A_ fd, revents);
847} 928}
848 929
849void 930void
850ev_feed_fd_event (EV_P_ int fd, int revents) 931ev_feed_fd_event (EV_P_ int fd, int revents)
851{ 932{
852 if (fd >= 0 && fd < anfdmax) 933 if (fd >= 0 && fd < anfdmax)
853 fd_event_nc (EV_A_ fd, revents); 934 fd_event_nocheck (EV_A_ fd, revents);
854} 935}
855 936
856/* make sure the external fd watch events are in-sync */ 937/* make sure the external fd watch events are in-sync */
857/* with the kernel/libev internal state */ 938/* with the kernel/libev internal state */
858inline_size void 939inline_size void
873 954
874#if EV_SELECT_IS_WINSOCKET 955#if EV_SELECT_IS_WINSOCKET
875 if (events) 956 if (events)
876 { 957 {
877 unsigned long arg; 958 unsigned long arg;
878 #ifdef EV_FD_TO_WIN32_HANDLE
879 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
880 #else
881 anfd->handle = _get_osfhandle (fd);
882 #endif
883 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
884 } 961 }
885#endif 962#endif
886 963
887 { 964 {
925 ev_io_stop (EV_A_ w); 1002 ev_io_stop (EV_A_ w);
926 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
927 } 1004 }
928} 1005}
929 1006
930/* check whether the given fd is atcually valid, for error recovery */ 1007/* check whether the given fd is actually valid, for error recovery */
931inline_size int 1008inline_size int
932fd_valid (int fd) 1009fd_valid (int fd)
933{ 1010{
934#ifdef _WIN32 1011#ifdef _WIN32
935 return _get_osfhandle (fd) != -1; 1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
936#else 1013#else
937 return fcntl (fd, F_GETFD) != -1; 1014 return fcntl (fd, F_GETFD) != -1;
938#endif 1015#endif
939} 1016}
940 1017
958 1035
959 for (fd = anfdmax; fd--; ) 1036 for (fd = anfdmax; fd--; )
960 if (anfds [fd].events) 1037 if (anfds [fd].events)
961 { 1038 {
962 fd_kill (EV_A_ fd); 1039 fd_kill (EV_A_ fd);
963 return; 1040 break;
964 } 1041 }
965} 1042}
966 1043
967/* usually called after fork if backend needs to re-arm all fds from scratch */ 1044/* usually called after fork if backend needs to re-arm all fds from scratch */
968static void noinline 1045static void noinline
975 { 1052 {
976 anfds [fd].events = 0; 1053 anfds [fd].events = 0;
977 anfds [fd].emask = 0; 1054 anfds [fd].emask = 0;
978 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1055 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
979 } 1056 }
1057}
1058
1059/* used to prepare libev internal fd's */
1060/* this is not fork-safe */
1061inline_speed void
1062fd_intern (int fd)
1063{
1064#ifdef _WIN32
1065 unsigned long arg = 1;
1066 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1067#else
1068 fcntl (fd, F_SETFD, FD_CLOEXEC);
1069 fcntl (fd, F_SETFL, O_NONBLOCK);
1070#endif
980} 1071}
981 1072
982/*****************************************************************************/ 1073/*****************************************************************************/
983 1074
984/* 1075/*
1058 1149
1059 for (;;) 1150 for (;;)
1060 { 1151 {
1061 int c = k << 1; 1152 int c = k << 1;
1062 1153
1063 if (c > N + HEAP0 - 1) 1154 if (c >= N + HEAP0)
1064 break; 1155 break;
1065 1156
1066 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1157 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1067 ? 1 : 0; 1158 ? 1 : 0;
1068 1159
1104 1195
1105/* move an element suitably so it is in a correct place */ 1196/* move an element suitably so it is in a correct place */
1106inline_size void 1197inline_size void
1107adjustheap (ANHE *heap, int N, int k) 1198adjustheap (ANHE *heap, int N, int k)
1108{ 1199{
1109 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1200 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1110 upheap (heap, k); 1201 upheap (heap, k);
1111 else 1202 else
1112 downheap (heap, N, k); 1203 downheap (heap, N, k);
1113} 1204}
1114 1205
1127/*****************************************************************************/ 1218/*****************************************************************************/
1128 1219
1129/* associate signal watchers to a signal signal */ 1220/* associate signal watchers to a signal signal */
1130typedef struct 1221typedef struct
1131{ 1222{
1223 EV_ATOMIC_T pending;
1132#if EV_MULTIPLICITY 1224#if EV_MULTIPLICITY
1133 EV_P; 1225 EV_P;
1134#endif 1226#endif
1135 WL head; 1227 WL head;
1136 EV_ATOMIC_T gotsig;
1137} ANSIG; 1228} ANSIG;
1138 1229
1139static ANSIG signals [EV_NSIG - 1]; 1230static ANSIG signals [EV_NSIG - 1];
1140static EV_ATOMIC_T gotsig;
1141 1231
1142/*****************************************************************************/ 1232/*****************************************************************************/
1143 1233
1144/* used to prepare libev internal fd's */ 1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1145/* this is not fork-safe */
1146inline_speed void
1147fd_intern (int fd)
1148{
1149#ifdef _WIN32
1150 unsigned long arg = 1;
1151 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1152#else
1153 fcntl (fd, F_SETFD, FD_CLOEXEC);
1154 fcntl (fd, F_SETFL, O_NONBLOCK);
1155#endif
1156}
1157 1235
1158static void noinline 1236static void noinline
1159evpipe_init (EV_P) 1237evpipe_init (EV_P)
1160{ 1238{
1161 if (!ev_is_active (&pipe_w)) 1239 if (!ev_is_active (&pipe_w))
1162 { 1240 {
1163#if EV_USE_EVENTFD 1241# if EV_USE_EVENTFD
1164 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1165 if (evfd < 0 && errno == EINVAL) 1243 if (evfd < 0 && errno == EINVAL)
1166 evfd = eventfd (0, 0); 1244 evfd = eventfd (0, 0);
1167 1245
1168 if (evfd >= 0) 1246 if (evfd >= 0)
1170 evpipe [0] = -1; 1248 evpipe [0] = -1;
1171 fd_intern (evfd); /* doing it twice doesn't hurt */ 1249 fd_intern (evfd); /* doing it twice doesn't hurt */
1172 ev_io_set (&pipe_w, evfd, EV_READ); 1250 ev_io_set (&pipe_w, evfd, EV_READ);
1173 } 1251 }
1174 else 1252 else
1175#endif 1253# endif
1176 { 1254 {
1177 while (pipe (evpipe)) 1255 while (pipe (evpipe))
1178 ev_syserr ("(libev) error creating signal/async pipe"); 1256 ev_syserr ("(libev) error creating signal/async pipe");
1179 1257
1180 fd_intern (evpipe [0]); 1258 fd_intern (evpipe [0]);
1191evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1192{ 1270{
1193 if (!*flag) 1271 if (!*flag)
1194 { 1272 {
1195 int old_errno = errno; /* save errno because write might clobber it */ 1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1196 1275
1197 *flag = 1; 1276 *flag = 1;
1198 1277
1199#if EV_USE_EVENTFD 1278#if EV_USE_EVENTFD
1200 if (evfd >= 0) 1279 if (evfd >= 0)
1202 uint64_t counter = 1; 1281 uint64_t counter = 1;
1203 write (evfd, &counter, sizeof (uint64_t)); 1282 write (evfd, &counter, sizeof (uint64_t));
1204 } 1283 }
1205 else 1284 else
1206#endif 1285#endif
1207 write (evpipe [1], &old_errno, 1); 1286 write (evpipe [1], &dummy, 1);
1208 1287
1209 errno = old_errno; 1288 errno = old_errno;
1210 } 1289 }
1211} 1290}
1212 1291
1213/* called whenever the libev signal pipe */ 1292/* called whenever the libev signal pipe */
1214/* got some events (signal, async) */ 1293/* got some events (signal, async) */
1215static void 1294static void
1216pipecb (EV_P_ ev_io *iow, int revents) 1295pipecb (EV_P_ ev_io *iow, int revents)
1217{ 1296{
1297 int i;
1298
1218#if EV_USE_EVENTFD 1299#if EV_USE_EVENTFD
1219 if (evfd >= 0) 1300 if (evfd >= 0)
1220 { 1301 {
1221 uint64_t counter; 1302 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 1303 read (evfd, &counter, sizeof (uint64_t));
1226 { 1307 {
1227 char dummy; 1308 char dummy;
1228 read (evpipe [0], &dummy, 1); 1309 read (evpipe [0], &dummy, 1);
1229 } 1310 }
1230 1311
1231 if (gotsig && ev_is_default_loop (EV_A)) 1312 if (sig_pending)
1232 { 1313 {
1233 int signum; 1314 sig_pending = 0;
1234 gotsig = 0;
1235 1315
1236 for (signum = EV_NSIG - 1; signum--; ) 1316 for (i = EV_NSIG - 1; i--; )
1237 if (signals [signum].gotsig) 1317 if (expect_false (signals [i].pending))
1238 ev_feed_signal_event (EV_A_ signum + 1); 1318 ev_feed_signal_event (EV_A_ i + 1);
1239 } 1319 }
1240 1320
1241#if EV_ASYNC_ENABLE 1321#if EV_ASYNC_ENABLE
1242 if (gotasync) 1322 if (async_pending)
1243 { 1323 {
1244 int i; 1324 async_pending = 0;
1245 gotasync = 0;
1246 1325
1247 for (i = asynccnt; i--; ) 1326 for (i = asynccnt; i--; )
1248 if (asyncs [i]->sent) 1327 if (asyncs [i]->sent)
1249 { 1328 {
1250 asyncs [i]->sent = 0; 1329 asyncs [i]->sent = 0;
1261{ 1340{
1262#if EV_MULTIPLICITY 1341#if EV_MULTIPLICITY
1263 EV_P = signals [signum - 1].loop; 1342 EV_P = signals [signum - 1].loop;
1264#endif 1343#endif
1265 1344
1266#if _WIN32 1345#ifdef _WIN32
1267 signal (signum, ev_sighandler); 1346 signal (signum, ev_sighandler);
1268#endif 1347#endif
1269 1348
1270 signals [signum - 1].gotsig = 1; 1349 signals [signum - 1].pending = 1;
1271 evpipe_write (EV_A_ &gotsig); 1350 evpipe_write (EV_A_ &sig_pending);
1272} 1351}
1273 1352
1274void noinline 1353void noinline
1275ev_feed_signal_event (EV_P_ int signum) 1354ev_feed_signal_event (EV_P_ int signum)
1276{ 1355{
1277 WL w; 1356 WL w;
1278 1357
1358 if (expect_false (signum <= 0 || signum > EV_NSIG))
1359 return;
1360
1361 --signum;
1362
1279#if EV_MULTIPLICITY 1363#if EV_MULTIPLICITY
1280 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1364 /* it is permissible to try to feed a signal to the wrong loop */
1281#endif 1365 /* or, likely more useful, feeding a signal nobody is waiting for */
1282 1366
1283 if (signum <= 0 || signum > EV_NSIG) 1367 if (expect_false (signals [signum].loop != EV_A))
1284 return; 1368 return;
1369#endif
1285 1370
1286 --signum;
1287
1288 signals [signum].gotsig = 0; 1371 signals [signum].pending = 0;
1289 1372
1290 for (w = signals [signum].head; w; w = w->next) 1373 for (w = signals [signum].head; w; w = w->next)
1291 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1374 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1292} 1375}
1293 1376
1309 break; 1392 break;
1310 } 1393 }
1311} 1394}
1312#endif 1395#endif
1313 1396
1397#endif
1398
1314/*****************************************************************************/ 1399/*****************************************************************************/
1315 1400
1401#if EV_CHILD_ENABLE
1316static WL childs [EV_PID_HASHSIZE]; 1402static WL childs [EV_PID_HASHSIZE];
1317
1318#ifndef _WIN32
1319 1403
1320static ev_signal childev; 1404static ev_signal childev;
1321 1405
1322#ifndef WIFCONTINUED 1406#ifndef WIFCONTINUED
1323# define WIFCONTINUED(status) 0 1407# define WIFCONTINUED(status) 0
1328child_reap (EV_P_ int chain, int pid, int status) 1412child_reap (EV_P_ int chain, int pid, int status)
1329{ 1413{
1330 ev_child *w; 1414 ev_child *w;
1331 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1415 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1332 1416
1333 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1417 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1334 { 1418 {
1335 if ((w->pid == pid || !w->pid) 1419 if ((w->pid == pid || !w->pid)
1336 && (!traced || (w->flags & 1))) 1420 && (!traced || (w->flags & 1)))
1337 { 1421 {
1338 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1422 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1363 /* make sure we are called again until all children have been reaped */ 1447 /* make sure we are called again until all children have been reaped */
1364 /* we need to do it this way so that the callback gets called before we continue */ 1448 /* we need to do it this way so that the callback gets called before we continue */
1365 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1449 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1366 1450
1367 child_reap (EV_A_ pid, pid, status); 1451 child_reap (EV_A_ pid, pid, status);
1368 if (EV_PID_HASHSIZE > 1) 1452 if ((EV_PID_HASHSIZE) > 1)
1369 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1453 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1370} 1454}
1371 1455
1372#endif 1456#endif
1373 1457
1440#ifdef __APPLE__ 1524#ifdef __APPLE__
1441 /* only select works correctly on that "unix-certified" platform */ 1525 /* only select works correctly on that "unix-certified" platform */
1442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1526 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1443 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1527 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1444#endif 1528#endif
1529#ifdef __FreeBSD__
1530 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1531#endif
1445 1532
1446 return flags; 1533 return flags;
1447} 1534}
1448 1535
1449unsigned int 1536unsigned int
1462ev_backend (EV_P) 1549ev_backend (EV_P)
1463{ 1550{
1464 return backend; 1551 return backend;
1465} 1552}
1466 1553
1467#if EV_MINIMAL < 2 1554#if EV_FEATURE_API
1468unsigned int 1555unsigned int
1469ev_loop_count (EV_P) 1556ev_iteration (EV_P)
1470{ 1557{
1471 return loop_count; 1558 return loop_count;
1472} 1559}
1473 1560
1474unsigned int 1561unsigned int
1475ev_loop_depth (EV_P) 1562ev_depth (EV_P)
1476{ 1563{
1477 return loop_depth; 1564 return loop_depth;
1478} 1565}
1479 1566
1480void 1567void
1552 1639
1553 ev_rt_now = ev_time (); 1640 ev_rt_now = ev_time ();
1554 mn_now = get_clock (); 1641 mn_now = get_clock ();
1555 now_floor = mn_now; 1642 now_floor = mn_now;
1556 rtmn_diff = ev_rt_now - mn_now; 1643 rtmn_diff = ev_rt_now - mn_now;
1557#if EV_MINIMAL < 2 1644#if EV_FEATURE_API
1558 invoke_cb = ev_invoke_pending; 1645 invoke_cb = ev_invoke_pending;
1559#endif 1646#endif
1560 1647
1561 io_blocktime = 0.; 1648 io_blocktime = 0.;
1562 timeout_blocktime = 0.; 1649 timeout_blocktime = 0.;
1563 backend = 0; 1650 backend = 0;
1564 backend_fd = -1; 1651 backend_fd = -1;
1565 gotasync = 0; 1652 sig_pending = 0;
1653#if EV_ASYNC_ENABLE
1654 async_pending = 0;
1655#endif
1566#if EV_USE_INOTIFY 1656#if EV_USE_INOTIFY
1567 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1568#endif 1658#endif
1569#if EV_USE_SIGNALFD 1659#if EV_USE_SIGNALFD
1570 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1571#endif 1661#endif
1572 1662
1573 if (!(flags & 0x0000ffffU)) 1663 if (!(flags & 0x0000ffffU))
1574 flags |= ev_recommended_backends (); 1664 flags |= ev_recommended_backends ();
1575 1665
1589 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1679 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1590#endif 1680#endif
1591 1681
1592 ev_prepare_init (&pending_w, pendingcb); 1682 ev_prepare_init (&pending_w, pendingcb);
1593 1683
1684#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1594 ev_init (&pipe_w, pipecb); 1685 ev_init (&pipe_w, pipecb);
1595 ev_set_priority (&pipe_w, EV_MAXPRI); 1686 ev_set_priority (&pipe_w, EV_MAXPRI);
1687#endif
1596 } 1688 }
1597} 1689}
1598 1690
1599/* free up a loop structure */ 1691/* free up a loop structure */
1600static void noinline 1692static void noinline
1612 close (evfd); 1704 close (evfd);
1613#endif 1705#endif
1614 1706
1615 if (evpipe [0] >= 0) 1707 if (evpipe [0] >= 0)
1616 { 1708 {
1617 close (evpipe [0]); 1709 EV_WIN32_CLOSE_FD (evpipe [0]);
1618 close (evpipe [1]); 1710 EV_WIN32_CLOSE_FD (evpipe [1]);
1619 } 1711 }
1620 } 1712 }
1621 1713
1622#if EV_USE_SIGNALFD 1714#if EV_USE_SIGNALFD
1623 if (ev_is_active (&sigfd_w)) 1715 if (ev_is_active (&sigfd_w))
1624 {
1625 /*ev_ref (EV_A);*/
1626 /*ev_io_stop (EV_A_ &sigfd_w);*/
1627
1628 close (sigfd); 1716 close (sigfd);
1629 }
1630#endif 1717#endif
1631 1718
1632#if EV_USE_INOTIFY 1719#if EV_USE_INOTIFY
1633 if (fs_fd >= 0) 1720 if (fs_fd >= 0)
1634 close (fs_fd); 1721 close (fs_fd);
1704 1791
1705 if (ev_is_active (&pipe_w)) 1792 if (ev_is_active (&pipe_w))
1706 { 1793 {
1707 /* this "locks" the handlers against writing to the pipe */ 1794 /* this "locks" the handlers against writing to the pipe */
1708 /* while we modify the fd vars */ 1795 /* while we modify the fd vars */
1709 gotsig = 1; 1796 sig_pending = 1;
1710#if EV_ASYNC_ENABLE 1797#if EV_ASYNC_ENABLE
1711 gotasync = 1; 1798 async_pending = 1;
1712#endif 1799#endif
1713 1800
1714 ev_ref (EV_A); 1801 ev_ref (EV_A);
1715 ev_io_stop (EV_A_ &pipe_w); 1802 ev_io_stop (EV_A_ &pipe_w);
1716 1803
1719 close (evfd); 1806 close (evfd);
1720#endif 1807#endif
1721 1808
1722 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1723 { 1810 {
1724 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1725 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1726 } 1813 }
1727 1814
1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1728 evpipe_init (EV_A); 1816 evpipe_init (EV_A);
1729 /* now iterate over everything, in case we missed something */ 1817 /* now iterate over everything, in case we missed something */
1730 pipecb (EV_A_ &pipe_w, EV_READ); 1818 pipecb (EV_A_ &pipe_w, EV_READ);
1819#endif
1731 } 1820 }
1732 1821
1733 postfork = 0; 1822 postfork = 0;
1734} 1823}
1735 1824
1797 verify_watcher (EV_A_ ws [cnt]); 1886 verify_watcher (EV_A_ ws [cnt]);
1798 } 1887 }
1799} 1888}
1800#endif 1889#endif
1801 1890
1802#if EV_MINIMAL < 2 1891#if EV_FEATURE_API
1803void 1892void
1804ev_loop_verify (EV_P) 1893ev_verify (EV_P)
1805{ 1894{
1806#if EV_VERIFY 1895#if EV_VERIFY
1807 int i; 1896 int i;
1808 WL w; 1897 WL w;
1809 1898
1848#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1849 assert (asyncmax >= asynccnt); 1938 assert (asyncmax >= asynccnt);
1850 array_verify (EV_A_ (W *)asyncs, asynccnt); 1939 array_verify (EV_A_ (W *)asyncs, asynccnt);
1851#endif 1940#endif
1852 1941
1942#if EV_PREPARE_ENABLE
1853 assert (preparemax >= preparecnt); 1943 assert (preparemax >= preparecnt);
1854 array_verify (EV_A_ (W *)prepares, preparecnt); 1944 array_verify (EV_A_ (W *)prepares, preparecnt);
1945#endif
1855 1946
1947#if EV_CHECK_ENABLE
1856 assert (checkmax >= checkcnt); 1948 assert (checkmax >= checkcnt);
1857 array_verify (EV_A_ (W *)checks, checkcnt); 1949 array_verify (EV_A_ (W *)checks, checkcnt);
1950#endif
1858 1951
1859# if 0 1952# if 0
1953#if EV_CHILD_ENABLE
1860 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1954 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1861 for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig) 1955 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1956#endif
1862# endif 1957# endif
1863#endif 1958#endif
1864} 1959}
1865#endif 1960#endif
1866 1961
1882 1977
1883 loop_init (EV_A_ flags); 1978 loop_init (EV_A_ flags);
1884 1979
1885 if (ev_backend (EV_A)) 1980 if (ev_backend (EV_A))
1886 { 1981 {
1887#ifndef _WIN32 1982#if EV_CHILD_ENABLE
1888 ev_signal_init (&childev, childcb, SIGCHLD); 1983 ev_signal_init (&childev, childcb, SIGCHLD);
1889 ev_set_priority (&childev, EV_MAXPRI); 1984 ev_set_priority (&childev, EV_MAXPRI);
1890 ev_signal_start (EV_A_ &childev); 1985 ev_signal_start (EV_A_ &childev);
1891 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1986 ev_unref (EV_A); /* child watcher should not keep loop alive */
1892#endif 1987#endif
1905 EV_P = ev_default_loop_ptr; 2000 EV_P = ev_default_loop_ptr;
1906#endif 2001#endif
1907 2002
1908 ev_default_loop_ptr = 0; 2003 ev_default_loop_ptr = 0;
1909 2004
1910#ifndef _WIN32 2005#if EV_CHILD_ENABLE
1911 ev_ref (EV_A); /* child watcher */ 2006 ev_ref (EV_A); /* child watcher */
1912 ev_signal_stop (EV_A_ &childev); 2007 ev_signal_stop (EV_A_ &childev);
1913#endif 2008#endif
1914 2009
1915 loop_destroy (EV_A); 2010 loop_destroy (EV_A);
2021 EV_FREQUENT_CHECK; 2116 EV_FREQUENT_CHECK;
2022 feed_reverse (EV_A_ (W)w); 2117 feed_reverse (EV_A_ (W)w);
2023 } 2118 }
2024 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2119 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2025 2120
2026 feed_reverse_done (EV_A_ EV_TIMEOUT); 2121 feed_reverse_done (EV_A_ EV_TIMER);
2027 } 2122 }
2028} 2123}
2029 2124
2030#if EV_PERIODIC_ENABLE 2125#if EV_PERIODIC_ENABLE
2031/* make periodics pending */ 2126/* make periodics pending */
2122 ANHE_at_cache (*he); 2217 ANHE_at_cache (*he);
2123 } 2218 }
2124} 2219}
2125 2220
2126/* fetch new monotonic and realtime times from the kernel */ 2221/* fetch new monotonic and realtime times from the kernel */
2127/* also detetc if there was a timejump, and act accordingly */ 2222/* also detect if there was a timejump, and act accordingly */
2128inline_speed void 2223inline_speed void
2129time_update (EV_P_ ev_tstamp max_block) 2224time_update (EV_P_ ev_tstamp max_block)
2130{ 2225{
2131#if EV_USE_MONOTONIC 2226#if EV_USE_MONOTONIC
2132 if (expect_true (have_monotonic)) 2227 if (expect_true (have_monotonic))
2192} 2287}
2193 2288
2194void 2289void
2195ev_loop (EV_P_ int flags) 2290ev_loop (EV_P_ int flags)
2196{ 2291{
2197#if EV_MINIMAL < 2 2292#if EV_FEATURE_API
2198 ++loop_depth; 2293 ++loop_depth;
2199#endif 2294#endif
2200 2295
2201 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2202 2297
2205 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2206 2301
2207 do 2302 do
2208 { 2303 {
2209#if EV_VERIFY >= 2 2304#if EV_VERIFY >= 2
2210 ev_loop_verify (EV_A); 2305 ev_verify (EV_A);
2211#endif 2306#endif
2212 2307
2213#ifndef _WIN32 2308#ifndef _WIN32
2214 if (expect_false (curpid)) /* penalise the forking check even more */ 2309 if (expect_false (curpid)) /* penalise the forking check even more */
2215 if (expect_false (getpid () != curpid)) 2310 if (expect_false (getpid () != curpid))
2227 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2322 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2228 EV_INVOKE_PENDING; 2323 EV_INVOKE_PENDING;
2229 } 2324 }
2230#endif 2325#endif
2231 2326
2327#if EV_PREPARE_ENABLE
2232 /* queue prepare watchers (and execute them) */ 2328 /* queue prepare watchers (and execute them) */
2233 if (expect_false (preparecnt)) 2329 if (expect_false (preparecnt))
2234 { 2330 {
2235 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2331 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2236 EV_INVOKE_PENDING; 2332 EV_INVOKE_PENDING;
2237 } 2333 }
2334#endif
2238 2335
2239 if (expect_false (loop_done)) 2336 if (expect_false (loop_done))
2240 break; 2337 break;
2241 2338
2242 /* we might have forked, so reify kernel state if necessary */ 2339 /* we might have forked, so reify kernel state if necessary */
2293 waittime -= sleeptime; 2390 waittime -= sleeptime;
2294 } 2391 }
2295 } 2392 }
2296 } 2393 }
2297 2394
2298#if EV_MINIMAL < 2 2395#if EV_FEATURE_API
2299 ++loop_count; 2396 ++loop_count;
2300#endif 2397#endif
2301 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2302 backend_poll (EV_A_ waittime); 2399 backend_poll (EV_A_ waittime);
2303 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2315#if EV_IDLE_ENABLE 2412#if EV_IDLE_ENABLE
2316 /* queue idle watchers unless other events are pending */ 2413 /* queue idle watchers unless other events are pending */
2317 idle_reify (EV_A); 2414 idle_reify (EV_A);
2318#endif 2415#endif
2319 2416
2417#if EV_CHECK_ENABLE
2320 /* queue check watchers, to be executed first */ 2418 /* queue check watchers, to be executed first */
2321 if (expect_false (checkcnt)) 2419 if (expect_false (checkcnt))
2322 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2420 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2421#endif
2323 2422
2324 EV_INVOKE_PENDING; 2423 EV_INVOKE_PENDING;
2325 } 2424 }
2326 while (expect_true ( 2425 while (expect_true (
2327 activecnt 2426 activecnt
2330 )); 2429 ));
2331 2430
2332 if (loop_done == EVUNLOOP_ONE) 2431 if (loop_done == EVUNLOOP_ONE)
2333 loop_done = EVUNLOOP_CANCEL; 2432 loop_done = EVUNLOOP_CANCEL;
2334 2433
2335#if EV_MINIMAL < 2 2434#if EV_FEATURE_API
2336 --loop_depth; 2435 --loop_depth;
2337#endif 2436#endif
2338} 2437}
2339 2438
2340void 2439void
2393inline_size void 2492inline_size void
2394wlist_del (WL *head, WL elem) 2493wlist_del (WL *head, WL elem)
2395{ 2494{
2396 while (*head) 2495 while (*head)
2397 { 2496 {
2398 if (*head == elem) 2497 if (expect_true (*head == elem))
2399 { 2498 {
2400 *head = elem->next; 2499 *head = elem->next;
2401 return; 2500 break;
2402 } 2501 }
2403 2502
2404 head = &(*head)->next; 2503 head = &(*head)->next;
2405 } 2504 }
2406} 2505}
2466 2565
2467 if (expect_false (ev_is_active (w))) 2566 if (expect_false (ev_is_active (w)))
2468 return; 2567 return;
2469 2568
2470 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2569 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2471 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2570 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2472 2571
2473 EV_FREQUENT_CHECK; 2572 EV_FREQUENT_CHECK;
2474 2573
2475 ev_start (EV_A_ (W)w, 1); 2574 ev_start (EV_A_ (W)w, 1);
2476 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2575 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2546 timers [active] = timers [timercnt + HEAP0]; 2645 timers [active] = timers [timercnt + HEAP0];
2547 adjustheap (timers, timercnt, active); 2646 adjustheap (timers, timercnt, active);
2548 } 2647 }
2549 } 2648 }
2550 2649
2551 EV_FREQUENT_CHECK;
2552
2553 ev_at (w) -= mn_now; 2650 ev_at (w) -= mn_now;
2554 2651
2555 ev_stop (EV_A_ (W)w); 2652 ev_stop (EV_A_ (W)w);
2653
2654 EV_FREQUENT_CHECK;
2556} 2655}
2557 2656
2558void noinline 2657void noinline
2559ev_timer_again (EV_P_ ev_timer *w) 2658ev_timer_again (EV_P_ ev_timer *w)
2560{ 2659{
2639 periodics [active] = periodics [periodiccnt + HEAP0]; 2738 periodics [active] = periodics [periodiccnt + HEAP0];
2640 adjustheap (periodics, periodiccnt, active); 2739 adjustheap (periodics, periodiccnt, active);
2641 } 2740 }
2642 } 2741 }
2643 2742
2644 EV_FREQUENT_CHECK;
2645
2646 ev_stop (EV_A_ (W)w); 2743 ev_stop (EV_A_ (W)w);
2744
2745 EV_FREQUENT_CHECK;
2647} 2746}
2648 2747
2649void noinline 2748void noinline
2650ev_periodic_again (EV_P_ ev_periodic *w) 2749ev_periodic_again (EV_P_ ev_periodic *w)
2651{ 2750{
2657 2756
2658#ifndef SA_RESTART 2757#ifndef SA_RESTART
2659# define SA_RESTART 0 2758# define SA_RESTART 0
2660#endif 2759#endif
2661 2760
2761#if EV_SIGNAL_ENABLE
2762
2662void noinline 2763void noinline
2663ev_signal_start (EV_P_ ev_signal *w) 2764ev_signal_start (EV_P_ ev_signal *w)
2664{ 2765{
2665 if (expect_false (ev_is_active (w))) 2766 if (expect_false (ev_is_active (w)))
2666 return; 2767 return;
2667 2768
2668 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 2769 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2669 2770
2670#if EV_MULTIPLICITY 2771#if EV_MULTIPLICITY
2671 assert (("libev: tried to attach to a signal from two different loops", 2772 assert (("libev: a signal must not be attached to two different loops",
2672 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 2773 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2673 2774
2674 signals [w->signum - 1].loop = EV_A; 2775 signals [w->signum - 1].loop = EV_A;
2675#endif 2776#endif
2676 2777
2712 if (!((WL)w)->next) 2813 if (!((WL)w)->next)
2713# if EV_USE_SIGNALFD 2814# if EV_USE_SIGNALFD
2714 if (sigfd < 0) /*TODO*/ 2815 if (sigfd < 0) /*TODO*/
2715# endif 2816# endif
2716 { 2817 {
2717# if _WIN32 2818# ifdef _WIN32
2819 evpipe_init (EV_A);
2820
2718 signal (w->signum, ev_sighandler); 2821 signal (w->signum, ev_sighandler);
2719# else 2822# else
2720 struct sigaction sa; 2823 struct sigaction sa;
2721 2824
2722 evpipe_init (EV_A); 2825 evpipe_init (EV_A);
2747 wlist_del (&signals [w->signum - 1].head, (WL)w); 2850 wlist_del (&signals [w->signum - 1].head, (WL)w);
2748 ev_stop (EV_A_ (W)w); 2851 ev_stop (EV_A_ (W)w);
2749 2852
2750 if (!signals [w->signum - 1].head) 2853 if (!signals [w->signum - 1].head)
2751 { 2854 {
2752 #if EV_MULTIPLICITY 2855#if EV_MULTIPLICITY
2753 signals [w->signum - 1].loop = 0; /* unattach from signal */ 2856 signals [w->signum - 1].loop = 0; /* unattach from signal */
2754 #endif 2857#endif
2755 #if EV_USE_SIGNALFD 2858#if EV_USE_SIGNALFD
2756 if (sigfd >= 0) 2859 if (sigfd >= 0)
2757 { 2860 {
2758 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 2861 sigset_t ss;
2862
2863 sigemptyset (&ss);
2864 sigaddset (&ss, w->signum);
2759 sigdelset (&sigfd_set, w->signum); 2865 sigdelset (&sigfd_set, w->signum);
2866
2760 signalfd (sigfd, &sigfd_set, 0); 2867 signalfd (sigfd, &sigfd_set, 0);
2761 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 2868 sigprocmask (SIG_UNBLOCK, &ss, 0);
2762 /*TODO: maybe unblock signal? */
2763 } 2869 }
2764 else 2870 else
2765 #endif 2871#endif
2766 signal (w->signum, SIG_DFL); 2872 signal (w->signum, SIG_DFL);
2767 } 2873 }
2768 2874
2769 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
2770} 2876}
2877
2878#endif
2879
2880#if EV_CHILD_ENABLE
2771 2881
2772void 2882void
2773ev_child_start (EV_P_ ev_child *w) 2883ev_child_start (EV_P_ ev_child *w)
2774{ 2884{
2775#if EV_MULTIPLICITY 2885#if EV_MULTIPLICITY
2779 return; 2889 return;
2780 2890
2781 EV_FREQUENT_CHECK; 2891 EV_FREQUENT_CHECK;
2782 2892
2783 ev_start (EV_A_ (W)w, 1); 2893 ev_start (EV_A_ (W)w, 1);
2784 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2894 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2785 2895
2786 EV_FREQUENT_CHECK; 2896 EV_FREQUENT_CHECK;
2787} 2897}
2788 2898
2789void 2899void
2793 if (expect_false (!ev_is_active (w))) 2903 if (expect_false (!ev_is_active (w)))
2794 return; 2904 return;
2795 2905
2796 EV_FREQUENT_CHECK; 2906 EV_FREQUENT_CHECK;
2797 2907
2798 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2908 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2799 ev_stop (EV_A_ (W)w); 2909 ev_stop (EV_A_ (W)w);
2800 2910
2801 EV_FREQUENT_CHECK; 2911 EV_FREQUENT_CHECK;
2802} 2912}
2913
2914#endif
2803 2915
2804#if EV_STAT_ENABLE 2916#if EV_STAT_ENABLE
2805 2917
2806# ifdef _WIN32 2918# ifdef _WIN32
2807# undef lstat 2919# undef lstat
2813#define MIN_STAT_INTERVAL 0.1074891 2925#define MIN_STAT_INTERVAL 0.1074891
2814 2926
2815static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2927static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2816 2928
2817#if EV_USE_INOTIFY 2929#if EV_USE_INOTIFY
2818# define EV_INOTIFY_BUFSIZE 8192 2930
2931/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2932# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2819 2933
2820static void noinline 2934static void noinline
2821infy_add (EV_P_ ev_stat *w) 2935infy_add (EV_P_ ev_stat *w)
2822{ 2936{
2823 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); 2937 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);
2824 2938
2825 if (w->wd < 0) 2939 if (w->wd >= 0)
2940 {
2941 struct statfs sfs;
2942
2943 /* now local changes will be tracked by inotify, but remote changes won't */
2944 /* unless the filesystem is known to be local, we therefore still poll */
2945 /* also do poll on <2.6.25, but with normal frequency */
2946
2947 if (!fs_2625)
2948 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2949 else if (!statfs (w->path, &sfs)
2950 && (sfs.f_type == 0x1373 /* devfs */
2951 || sfs.f_type == 0xEF53 /* ext2/3 */
2952 || sfs.f_type == 0x3153464a /* jfs */
2953 || sfs.f_type == 0x52654973 /* reiser3 */
2954 || sfs.f_type == 0x01021994 /* tempfs */
2955 || sfs.f_type == 0x58465342 /* xfs */))
2956 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2957 else
2958 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2826 { 2959 }
2960 else
2961 {
2962 /* can't use inotify, continue to stat */
2827 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2963 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2828 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2829 2964
2830 /* monitor some parent directory for speedup hints */ 2965 /* if path is not there, monitor some parent directory for speedup hints */
2831 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2966 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2832 /* but an efficiency issue only */ 2967 /* but an efficiency issue only */
2833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2968 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2834 { 2969 {
2835 char path [4096]; 2970 char path [4096];
2851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2852 } 2987 }
2853 } 2988 }
2854 2989
2855 if (w->wd >= 0) 2990 if (w->wd >= 0)
2856 {
2857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2991 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2858 2992
2859 /* now local changes will be tracked by inotify, but remote changes won't */ 2993 /* now re-arm timer, if required */
2860 /* unless the filesystem it known to be local, we therefore still poll */ 2994 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2861 /* also do poll on <2.6.25, but with normal frequency */
2862 struct statfs sfs;
2863
2864 if (fs_2625 && !statfs (w->path, &sfs))
2865 if (sfs.f_type == 0x1373 /* devfs */
2866 || sfs.f_type == 0xEF53 /* ext2/3 */
2867 || sfs.f_type == 0x3153464a /* jfs */
2868 || sfs.f_type == 0x52654973 /* reiser3 */
2869 || sfs.f_type == 0x01021994 /* tempfs */
2870 || sfs.f_type == 0x58465342 /* xfs */)
2871 return;
2872
2873 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2874 ev_timer_again (EV_A_ &w->timer); 2995 ev_timer_again (EV_A_ &w->timer);
2875 } 2996 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2876} 2997}
2877 2998
2878static void noinline 2999static void noinline
2879infy_del (EV_P_ ev_stat *w) 3000infy_del (EV_P_ ev_stat *w)
2880{ 3001{
2883 3004
2884 if (wd < 0) 3005 if (wd < 0)
2885 return; 3006 return;
2886 3007
2887 w->wd = -2; 3008 w->wd = -2;
2888 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3009 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2889 wlist_del (&fs_hash [slot].head, (WL)w); 3010 wlist_del (&fs_hash [slot].head, (WL)w);
2890 3011
2891 /* remove this watcher, if others are watching it, they will rearm */ 3012 /* remove this watcher, if others are watching it, they will rearm */
2892 inotify_rm_watch (fs_fd, wd); 3013 inotify_rm_watch (fs_fd, wd);
2893} 3014}
2895static void noinline 3016static void noinline
2896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3017infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2897{ 3018{
2898 if (slot < 0) 3019 if (slot < 0)
2899 /* overflow, need to check for all hash slots */ 3020 /* overflow, need to check for all hash slots */
2900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3021 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2901 infy_wd (EV_A_ slot, wd, ev); 3022 infy_wd (EV_A_ slot, wd, ev);
2902 else 3023 else
2903 { 3024 {
2904 WL w_; 3025 WL w_;
2905 3026
2906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3027 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2907 { 3028 {
2908 ev_stat *w = (ev_stat *)w_; 3029 ev_stat *w = (ev_stat *)w_;
2909 w_ = w_->next; /* lets us remove this watcher and all before it */ 3030 w_ = w_->next; /* lets us remove this watcher and all before it */
2910 3031
2911 if (w->wd == wd || wd == -1) 3032 if (w->wd == wd || wd == -1)
2912 { 3033 {
2913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3034 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2914 { 3035 {
2915 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3036 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2916 w->wd = -1; 3037 w->wd = -1;
2917 infy_add (EV_A_ w); /* re-add, no matter what */ 3038 infy_add (EV_A_ w); /* re-add, no matter what */
2918 } 3039 }
2919 3040
2920 stat_timer_cb (EV_A_ &w->timer, 0); 3041 stat_timer_cb (EV_A_ &w->timer, 0);
2925 3046
2926static void 3047static void
2927infy_cb (EV_P_ ev_io *w, int revents) 3048infy_cb (EV_P_ ev_io *w, int revents)
2928{ 3049{
2929 char buf [EV_INOTIFY_BUFSIZE]; 3050 char buf [EV_INOTIFY_BUFSIZE];
2930 struct inotify_event *ev = (struct inotify_event *)buf;
2931 int ofs; 3051 int ofs;
2932 int len = read (fs_fd, buf, sizeof (buf)); 3052 int len = read (fs_fd, buf, sizeof (buf));
2933 3053
2934 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3054 for (ofs = 0; ofs < len; )
3055 {
3056 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2935 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3057 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len;
3059 }
3060}
3061
3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
2936} 3092}
2937 3093
2938inline_size void 3094inline_size void
2939check_2625 (EV_P) 3095ev_check_2625 (EV_P)
2940{ 3096{
2941 /* kernels < 2.6.25 are borked 3097 /* kernels < 2.6.25 are borked
2942 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2943 */ 3099 */
2944 struct utsname buf; 3100 if (ev_linux_version () < 0x020619)
2945 int major, minor, micro;
2946
2947 if (uname (&buf))
2948 return; 3101 return;
2949 3102
2950 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2951 return;
2952
2953 if (major < 2
2954 || (major == 2 && minor < 6)
2955 || (major == 2 && minor == 6 && micro < 25))
2956 return;
2957
2958 fs_2625 = 1; 3103 fs_2625 = 1;
3104}
3105
3106inline_size int
3107infy_newfd (void)
3108{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0)
3112 return fd;
3113#endif
3114 return inotify_init ();
2959} 3115}
2960 3116
2961inline_size void 3117inline_size void
2962infy_init (EV_P) 3118infy_init (EV_P)
2963{ 3119{
2964 if (fs_fd != -2) 3120 if (fs_fd != -2)
2965 return; 3121 return;
2966 3122
2967 fs_fd = -1; 3123 fs_fd = -1;
2968 3124
2969 check_2625 (EV_A); 3125 ev_check_2625 (EV_A);
2970 3126
2971 fs_fd = inotify_init (); 3127 fs_fd = infy_newfd ();
2972 3128
2973 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
2974 { 3130 {
3131 fd_intern (fs_fd);
2975 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3132 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2976 ev_set_priority (&fs_w, EV_MAXPRI); 3133 ev_set_priority (&fs_w, EV_MAXPRI);
2977 ev_io_start (EV_A_ &fs_w); 3134 ev_io_start (EV_A_ &fs_w);
3135 ev_unref (EV_A);
2978 } 3136 }
2979} 3137}
2980 3138
2981inline_size void 3139inline_size void
2982infy_fork (EV_P) 3140infy_fork (EV_P)
2984 int slot; 3142 int slot;
2985 3143
2986 if (fs_fd < 0) 3144 if (fs_fd < 0)
2987 return; 3145 return;
2988 3146
3147 ev_ref (EV_A);
3148 ev_io_stop (EV_A_ &fs_w);
2989 close (fs_fd); 3149 close (fs_fd);
2990 fs_fd = inotify_init (); 3150 fs_fd = infy_newfd ();
2991 3151
3152 if (fs_fd >= 0)
3153 {
3154 fd_intern (fs_fd);
3155 ev_io_set (&fs_w, fs_fd, EV_READ);
3156 ev_io_start (EV_A_ &fs_w);
3157 ev_unref (EV_A);
3158 }
3159
2992 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3160 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2993 { 3161 {
2994 WL w_ = fs_hash [slot].head; 3162 WL w_ = fs_hash [slot].head;
2995 fs_hash [slot].head = 0; 3163 fs_hash [slot].head = 0;
2996 3164
2997 while (w_) 3165 while (w_)
3002 w->wd = -1; 3170 w->wd = -1;
3003 3171
3004 if (fs_fd >= 0) 3172 if (fs_fd >= 0)
3005 infy_add (EV_A_ w); /* re-add, no matter what */ 3173 infy_add (EV_A_ w); /* re-add, no matter what */
3006 else 3174 else
3175 {
3176 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3177 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3007 ev_timer_again (EV_A_ &w->timer); 3178 ev_timer_again (EV_A_ &w->timer);
3179 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3180 }
3008 } 3181 }
3009 } 3182 }
3010} 3183}
3011 3184
3012#endif 3185#endif
3029static void noinline 3202static void noinline
3030stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3203stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3031{ 3204{
3032 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3205 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3033 3206
3034 /* we copy this here each the time so that */ 3207 ev_statdata prev = w->attr;
3035 /* prev has the old value when the callback gets invoked */
3036 w->prev = w->attr;
3037 ev_stat_stat (EV_A_ w); 3208 ev_stat_stat (EV_A_ w);
3038 3209
3039 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3210 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3040 if ( 3211 if (
3041 w->prev.st_dev != w->attr.st_dev 3212 prev.st_dev != w->attr.st_dev
3042 || w->prev.st_ino != w->attr.st_ino 3213 || prev.st_ino != w->attr.st_ino
3043 || w->prev.st_mode != w->attr.st_mode 3214 || prev.st_mode != w->attr.st_mode
3044 || w->prev.st_nlink != w->attr.st_nlink 3215 || prev.st_nlink != w->attr.st_nlink
3045 || w->prev.st_uid != w->attr.st_uid 3216 || prev.st_uid != w->attr.st_uid
3046 || w->prev.st_gid != w->attr.st_gid 3217 || prev.st_gid != w->attr.st_gid
3047 || w->prev.st_rdev != w->attr.st_rdev 3218 || prev.st_rdev != w->attr.st_rdev
3048 || w->prev.st_size != w->attr.st_size 3219 || prev.st_size != w->attr.st_size
3049 || w->prev.st_atime != w->attr.st_atime 3220 || prev.st_atime != w->attr.st_atime
3050 || w->prev.st_mtime != w->attr.st_mtime 3221 || prev.st_mtime != w->attr.st_mtime
3051 || w->prev.st_ctime != w->attr.st_ctime 3222 || prev.st_ctime != w->attr.st_ctime
3052 ) { 3223 ) {
3224 /* we only update w->prev on actual differences */
3225 /* in case we test more often than invoke the callback, */
3226 /* to ensure that prev is always different to attr */
3227 w->prev = prev;
3228
3053 #if EV_USE_INOTIFY 3229 #if EV_USE_INOTIFY
3054 if (fs_fd >= 0) 3230 if (fs_fd >= 0)
3055 { 3231 {
3056 infy_del (EV_A_ w); 3232 infy_del (EV_A_ w);
3057 infy_add (EV_A_ w); 3233 infy_add (EV_A_ w);
3082 3258
3083 if (fs_fd >= 0) 3259 if (fs_fd >= 0)
3084 infy_add (EV_A_ w); 3260 infy_add (EV_A_ w);
3085 else 3261 else
3086#endif 3262#endif
3263 {
3087 ev_timer_again (EV_A_ &w->timer); 3264 ev_timer_again (EV_A_ &w->timer);
3265 ev_unref (EV_A);
3266 }
3088 3267
3089 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
3090 3269
3091 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
3092} 3271}
3101 EV_FREQUENT_CHECK; 3280 EV_FREQUENT_CHECK;
3102 3281
3103#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
3104 infy_del (EV_A_ w); 3283 infy_del (EV_A_ w);
3105#endif 3284#endif
3285
3286 if (ev_is_active (&w->timer))
3287 {
3288 ev_ref (EV_A);
3106 ev_timer_stop (EV_A_ &w->timer); 3289 ev_timer_stop (EV_A_ &w->timer);
3290 }
3107 3291
3108 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
3109 3293
3110 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
3111} 3295}
3156 3340
3157 EV_FREQUENT_CHECK; 3341 EV_FREQUENT_CHECK;
3158} 3342}
3159#endif 3343#endif
3160 3344
3345#if EV_PREPARE_ENABLE
3161void 3346void
3162ev_prepare_start (EV_P_ ev_prepare *w) 3347ev_prepare_start (EV_P_ ev_prepare *w)
3163{ 3348{
3164 if (expect_false (ev_is_active (w))) 3349 if (expect_false (ev_is_active (w)))
3165 return; 3350 return;
3191 3376
3192 ev_stop (EV_A_ (W)w); 3377 ev_stop (EV_A_ (W)w);
3193 3378
3194 EV_FREQUENT_CHECK; 3379 EV_FREQUENT_CHECK;
3195} 3380}
3381#endif
3196 3382
3383#if EV_CHECK_ENABLE
3197void 3384void
3198ev_check_start (EV_P_ ev_check *w) 3385ev_check_start (EV_P_ ev_check *w)
3199{ 3386{
3200 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
3201 return; 3388 return;
3227 3414
3228 ev_stop (EV_A_ (W)w); 3415 ev_stop (EV_A_ (W)w);
3229 3416
3230 EV_FREQUENT_CHECK; 3417 EV_FREQUENT_CHECK;
3231} 3418}
3419#endif
3232 3420
3233#if EV_EMBED_ENABLE 3421#if EV_EMBED_ENABLE
3234void noinline 3422void noinline
3235ev_embed_sweep (EV_P_ ev_embed *w) 3423ev_embed_sweep (EV_P_ ev_embed *w)
3236{ 3424{
3331 3519
3332 ev_io_stop (EV_A_ &w->io); 3520 ev_io_stop (EV_A_ &w->io);
3333 ev_prepare_stop (EV_A_ &w->prepare); 3521 ev_prepare_stop (EV_A_ &w->prepare);
3334 ev_fork_stop (EV_A_ &w->fork); 3522 ev_fork_stop (EV_A_ &w->fork);
3335 3523
3524 ev_stop (EV_A_ (W)w);
3525
3336 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
3337} 3527}
3338#endif 3528#endif
3339 3529
3340#if EV_FORK_ENABLE 3530#if EV_FORK_ENABLE
3416 3606
3417void 3607void
3418ev_async_send (EV_P_ ev_async *w) 3608ev_async_send (EV_P_ ev_async *w)
3419{ 3609{
3420 w->sent = 1; 3610 w->sent = 1;
3421 evpipe_write (EV_A_ &gotasync); 3611 evpipe_write (EV_A_ &async_pending);
3422} 3612}
3423#endif 3613#endif
3424 3614
3425/*****************************************************************************/ 3615/*****************************************************************************/
3426 3616
3466{ 3656{
3467 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3657 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3468 3658
3469 if (expect_false (!once)) 3659 if (expect_false (!once))
3470 { 3660 {
3471 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3661 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3472 return; 3662 return;
3473 } 3663 }
3474 3664
3475 once->cb = cb; 3665 once->cb = cb;
3476 once->arg = arg; 3666 once->arg = arg;
3563 if (types & EV_ASYNC) 3753 if (types & EV_ASYNC)
3564 for (i = asynccnt; i--; ) 3754 for (i = asynccnt; i--; )
3565 cb (EV_A_ EV_ASYNC, asyncs [i]); 3755 cb (EV_A_ EV_ASYNC, asyncs [i]);
3566#endif 3756#endif
3567 3757
3758#if EV_PREPARE_ENABLE
3568 if (types & EV_PREPARE) 3759 if (types & EV_PREPARE)
3569 for (i = preparecnt; i--; ) 3760 for (i = preparecnt; i--; )
3570#if EV_EMBED_ENABLE 3761# if EV_EMBED_ENABLE
3571 if (ev_cb (prepares [i]) != embed_prepare_cb) 3762 if (ev_cb (prepares [i]) != embed_prepare_cb)
3572#endif 3763# endif
3573 cb (EV_A_ EV_PREPARE, prepares [i]); 3764 cb (EV_A_ EV_PREPARE, prepares [i]);
3765#endif
3574 3766
3767#if EV_CHECK_ENABLE
3575 if (types & EV_CHECK) 3768 if (types & EV_CHECK)
3576 for (i = checkcnt; i--; ) 3769 for (i = checkcnt; i--; )
3577 cb (EV_A_ EV_CHECK, checks [i]); 3770 cb (EV_A_ EV_CHECK, checks [i]);
3771#endif
3578 3772
3773#if EV_SIGNAL_ENABLE
3579 if (types & EV_SIGNAL) 3774 if (types & EV_SIGNAL)
3580 for (i = 0; i < EV_NSIG - 1; ++i) 3775 for (i = 0; i < EV_NSIG - 1; ++i)
3581 for (wl = signals [i].head; wl; ) 3776 for (wl = signals [i].head; wl; )
3582 { 3777 {
3583 wn = wl->next; 3778 wn = wl->next;
3584 cb (EV_A_ EV_SIGNAL, wl); 3779 cb (EV_A_ EV_SIGNAL, wl);
3585 wl = wn; 3780 wl = wn;
3586 } 3781 }
3782#endif
3587 3783
3784#if EV_CHILD_ENABLE
3588 if (types & EV_CHILD) 3785 if (types & EV_CHILD)
3589 for (i = EV_PID_HASHSIZE; i--; ) 3786 for (i = (EV_PID_HASHSIZE); i--; )
3590 for (wl = childs [i]; wl; ) 3787 for (wl = childs [i]; wl; )
3591 { 3788 {
3592 wn = wl->next; 3789 wn = wl->next;
3593 cb (EV_A_ EV_CHILD, wl); 3790 cb (EV_A_ EV_CHILD, wl);
3594 wl = wn; 3791 wl = wn;
3595 } 3792 }
3793#endif
3596/* EV_STAT 0x00001000 /* stat data changed */ 3794/* EV_STAT 0x00001000 /* stat data changed */
3597/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3795/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3598} 3796}
3599#endif 3797#endif
3600 3798

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