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Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.349 by sf-exg, Fri Oct 15 22:59:59 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
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
144# endif 161# endif
145 162
146#endif 163#endif
147 164
148#include <math.h> 165#include <math.h>
149#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
150#include <fcntl.h> 168#include <fcntl.h>
151#include <stddef.h> 169#include <stddef.h>
152 170
153#include <stdio.h> 171#include <stdio.h>
154 172
155#include <assert.h> 173#include <assert.h>
156#include <errno.h> 174#include <errno.h>
157#include <sys/types.h> 175#include <sys/types.h>
158#include <time.h> 176#include <time.h>
177#include <limits.h>
159 178
160#include <signal.h> 179#include <signal.h>
161 180
162#ifdef EV_H 181#ifdef EV_H
163# include EV_H 182# include EV_H
… …
174# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 194# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
178# endif 197# endif
198# undef EV_AVOID_STDIO
179#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
180 208
181/* 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 */
210
211/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG)
213/* use what's provided */
214#elif defined (NSIG)
215# define EV_NSIG (NSIG)
216#elif defined(_NSIG)
217# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX)
219# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX)
221# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX)
223# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG)
225# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG)
227# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE)
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig)
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else
233# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
236# define EV_NSIG 65
237#endif
182 238
183#ifndef EV_USE_CLOCK_SYSCALL 239#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 240# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 242# else
187# define EV_USE_CLOCK_SYSCALL 0 243# define EV_USE_CLOCK_SYSCALL 0
188# endif 244# endif
189#endif 245#endif
190 246
191#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 250# else
195# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
196# endif 252# endif
197#endif 253#endif
198 254
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 257#endif
202 258
203#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 262# else
207# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
208# endif 264# endif
209#endif 265#endif
210 266
211#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 269#endif
214 270
215#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
216# ifdef _WIN32 272# ifdef _WIN32
217# define EV_USE_POLL 0 273# define EV_USE_POLL 0
218# else 274# else
219# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 276# endif
221#endif 277#endif
222 278
223#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 282# else
227# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
228# endif 284# endif
229#endif 285#endif
230 286
… …
236# define EV_USE_PORT 0 292# define EV_USE_PORT 0
237#endif 293#endif
238 294
239#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 298# else
243# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
244# endif 300# endif
245#endif 301#endif
246 302
247#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 305#endif
254 306
255#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 309#endif
262 310
263#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 314# else
267# define EV_USE_EVENTFD 0 315# define EV_USE_EVENTFD 0
316# endif
317#endif
318
319#ifndef EV_USE_SIGNALFD
320# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
321# define EV_USE_SIGNALFD EV_FEATURE_OS
322# else
323# define EV_USE_SIGNALFD 0
268# endif 324# endif
269#endif 325#endif
270 326
271#if 0 /* debugging */ 327#if 0 /* debugging */
272# define EV_VERIFY 3 328# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
275#endif 331#endif
276 332
277#ifndef EV_VERIFY 333#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 335#endif
280 336
281#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 339#endif
284 340
285#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 343#endif
288 344
289/* 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, */
290/* which makes programs even slower. might work on other unices, too. */ 346/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 347#if EV_USE_CLOCK_SYSCALL
… …
300# endif 356# endif
301#endif 357#endif
302 358
303/* 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 */
304 360
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
305#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
308#endif 370#endif
309 371
… …
339#endif 401#endif
340 402
341#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 405# include <stdint.h>
406# ifndef EFD_NONBLOCK
407# define EFD_NONBLOCK O_NONBLOCK
408# endif
409# ifndef EFD_CLOEXEC
410# ifdef O_CLOEXEC
411# define EFD_CLOEXEC O_CLOEXEC
412# else
413# define EFD_CLOEXEC 02000000
414# endif
415# endif
344# ifdef __cplusplus 416# ifdef __cplusplus
345extern "C" { 417extern "C" {
346# endif 418# endif
347int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
348# ifdef __cplusplus 420# ifdef __cplusplus
349} 421}
350# endif 422# endif
351#endif 423#endif
352 424
425#if EV_USE_SIGNALFD
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
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
353/**/ 453/**/
354 454
355#if EV_VERIFY >= 3 455#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 456# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 457#else
358# define EV_FREQUENT_CHECK do { } while (0) 458# define EV_FREQUENT_CHECK do { } while (0)
359#endif 459#endif
360 460
361/* 461/*
… …
368 */ 468 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370 470
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 473
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
374 476
375#if __GNUC__ >= 4 477#if __GNUC__ >= 4
376# define expect(expr,value) __builtin_expect ((expr),(value)) 478# define expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline)) 479# define noinline __attribute__ ((noinline))
378#else 480#else
… …
385 487
386#define expect_false(expr) expect ((expr) != 0, 0) 488#define expect_false(expr) expect ((expr) != 0, 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 489#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline 490#define inline_size static inline
389 491
390#if EV_MINIMAL 492#if EV_FEATURE_CODE
493# define inline_speed static inline
494#else
391# define inline_speed static noinline 495# define inline_speed static noinline
496#endif
497
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499
500#if EV_MINPRI == EV_MAXPRI
501# define ABSPRI(w) (((W)w), 0)
392#else 502#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif
398 505
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 506#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 507#define EMPTY2(a,b) /* used to suppress some warnings */
401 508
402typedef ev_watcher *W; 509typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 513#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 514#define ev_at(w) ((WT)(w))->at
408 515
409#if EV_USE_REALTIME 516#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 517/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 518/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 519static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 520#endif
414 521
415#if EV_USE_MONOTONIC 522#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 523static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 524#endif
418 525
526#ifndef EV_FD_TO_WIN32_HANDLE
527# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
528#endif
529#ifndef EV_WIN32_HANDLE_TO_FD
530# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
531#endif
532#ifndef EV_WIN32_CLOSE_FD
533# define EV_WIN32_CLOSE_FD(fd) close (fd)
534#endif
535
419#ifdef _WIN32 536#ifdef _WIN32
420# include "ev_win32.c" 537# include "ev_win32.c"
421#endif 538#endif
422 539
423/*****************************************************************************/ 540/*****************************************************************************/
541
542#if EV_AVOID_STDIO
543static void noinline
544ev_printerr (const char *msg)
545{
546 write (STDERR_FILENO, msg, strlen (msg));
547}
548#endif
424 549
425static void (*syserr_cb)(const char *msg); 550static void (*syserr_cb)(const char *msg);
426 551
427void 552void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 553ev_set_syserr_cb (void (*cb)(const char *msg))
… …
438 563
439 if (syserr_cb) 564 if (syserr_cb)
440 syserr_cb (msg); 565 syserr_cb (msg);
441 else 566 else
442 { 567 {
568#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg);
572 ev_printerr (": ");
573 ev_printerr (err);
574 ev_printerr ("\n");
575#else
443 perror (msg); 576 perror (msg);
577#endif
444 abort (); 578 abort ();
445 } 579 }
446} 580}
447 581
448static void * 582static void *
449ev_realloc_emul (void *ptr, long size) 583ev_realloc_emul (void *ptr, long size)
450{ 584{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
451 /* some systems, notably openbsd and darwin, fail to properly 588 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 589 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 590 * the single unix specification, so work around them here.
454 */ 591 */
455 592
456 if (size) 593 if (size)
457 return realloc (ptr, size); 594 return realloc (ptr, size);
458 595
459 free (ptr); 596 free (ptr);
460 return 0; 597 return 0;
598#endif
461} 599}
462 600
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 602
465void 603void
… …
473{ 611{
474 ptr = alloc (ptr, size); 612 ptr = alloc (ptr, size);
475 613
476 if (!ptr && size) 614 if (!ptr && size)
477 { 615 {
616#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n");
618#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
620#endif
479 abort (); 621 abort ();
480 } 622 }
481 623
482 return ptr; 624 return ptr;
483} 625}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 627#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 628#define ev_free(ptr) ev_realloc ((ptr), 0)
487 629
488/*****************************************************************************/ 630/*****************************************************************************/
489 631
632/* set in reify when reification needed */
633#define EV_ANFD_REIFY 1
634
490/* file descriptor info structure */ 635/* file descriptor info structure */
491typedef struct 636typedef struct
492{ 637{
493 WL head; 638 WL head;
494 unsigned char events; /* the events watched for */ 639 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 642 unsigned char unused;
498#if EV_USE_EPOLL 643#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 644 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 645#endif
… …
562 707
563 static int ev_default_loop_ptr; 708 static int ev_default_loop_ptr;
564 709
565#endif 710#endif
566 711
712#if EV_FEATURE_API
713# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
714# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
715# define EV_INVOKE_PENDING invoke_cb (EV_A)
716#else
717# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif
721
722#define EVUNLOOP_RECURSE 0x80
723
567/*****************************************************************************/ 724/*****************************************************************************/
568 725
569#ifndef EV_HAVE_EV_TIME 726#ifndef EV_HAVE_EV_TIME
570ev_tstamp 727ev_tstamp
571ev_time (void) 728ev_time (void)
… …
614 if (delay > 0.) 771 if (delay > 0.)
615 { 772 {
616#if EV_USE_NANOSLEEP 773#if EV_USE_NANOSLEEP
617 struct timespec ts; 774 struct timespec ts;
618 775
619 ts.tv_sec = (time_t)delay; 776 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 777 nanosleep (&ts, 0);
623#elif defined(_WIN32) 778#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3)); 779 Sleep ((unsigned long)(delay * 1e3));
625#else 780#else
626 struct timeval tv; 781 struct timeval tv;
627 782
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 784 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 785 /* by older ones */
786 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 787 select (0, 0, 0, 0, &tv);
635#endif 788#endif
636 } 789 }
637} 790}
638 791
639/*****************************************************************************/ 792/*****************************************************************************/
640 793
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 794#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 795
643/* find a suitable new size for the given array, */ 796/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 797/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 798inline_size int
646array_nextsize (int elem, int cur, int cnt) 799array_nextsize (int elem, int cur, int cnt)
647{ 800{
648 int ncur = cur + 1; 801 int ncur = cur + 1;
649 802
… …
745} 898}
746 899
747/*****************************************************************************/ 900/*****************************************************************************/
748 901
749inline_speed void 902inline_speed void
750fd_event (EV_P_ int fd, int revents) 903fd_event_nocheck (EV_P_ int fd, int revents)
751{ 904{
752 ANFD *anfd = anfds + fd; 905 ANFD *anfd = anfds + fd;
753 ev_io *w; 906 ev_io *w;
754 907
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 912 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 913 ev_feed_event (EV_A_ (W)w, ev);
761 } 914 }
762} 915}
763 916
917/* do not submit kernel events for fds that have reify set */
918/* because that means they changed while we were polling for new events */
919inline_speed void
920fd_event (EV_P_ int fd, int revents)
921{
922 ANFD *anfd = anfds + fd;
923
924 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents);
926}
927
764void 928void
765ev_feed_fd_event (EV_P_ int fd, int revents) 929ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 930{
767 if (fd >= 0 && fd < anfdmax) 931 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 932 fd_event_nocheck (EV_A_ fd, revents);
769} 933}
770 934
771/* make sure the external fd watch events are in-sync */ 935/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 936/* with the kernel/libev internal state */
773inline_size void 937inline_size void
… …
788 952
789#if EV_SELECT_IS_WINSOCKET 953#if EV_SELECT_IS_WINSOCKET
790 if (events) 954 if (events)
791 { 955 {
792 unsigned long arg; 956 unsigned long arg;
793 #ifdef EV_FD_TO_WIN32_HANDLE
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795 #else
796 anfd->handle = _get_osfhandle (fd);
797 #endif
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
799 } 959 }
800#endif 960#endif
801 961
802 { 962 {
… …
840 ev_io_stop (EV_A_ w); 1000 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1002 }
843} 1003}
844 1004
845/* check whether the given fd is atcually valid, for error recovery */ 1005/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1006inline_size int
847fd_valid (int fd) 1007fd_valid (int fd)
848{ 1008{
849#ifdef _WIN32 1009#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1011#else
852 return fcntl (fd, F_GETFD) != -1; 1012 return fcntl (fd, F_GETFD) != -1;
853#endif 1013#endif
854} 1014}
855 1015
… …
873 1033
874 for (fd = anfdmax; fd--; ) 1034 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1035 if (anfds [fd].events)
876 { 1036 {
877 fd_kill (EV_A_ fd); 1037 fd_kill (EV_A_ fd);
878 return; 1038 break;
879 } 1039 }
880} 1040}
881 1041
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1042/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1043static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1048 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1049 if (anfds [fd].events)
890 { 1050 {
891 anfds [fd].events = 0; 1051 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1052 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1053 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1054 }
895} 1055}
896 1056
1057/* used to prepare libev internal fd's */
1058/* this is not fork-safe */
1059inline_speed void
1060fd_intern (int fd)
1061{
1062#ifdef _WIN32
1063 unsigned long arg = 1;
1064 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1065#else
1066 fcntl (fd, F_SETFD, FD_CLOEXEC);
1067 fcntl (fd, F_SETFL, O_NONBLOCK);
1068#endif
1069}
1070
897/*****************************************************************************/ 1071/*****************************************************************************/
898 1072
899/* 1073/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1074 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1075 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1076 * the branching factor of the d-tree.
903 */ 1077 */
904 1078
905/* 1079/*
… …
973 1147
974 for (;;) 1148 for (;;)
975 { 1149 {
976 int c = k << 1; 1150 int c = k << 1;
977 1151
978 if (c > N + HEAP0 - 1) 1152 if (c >= N + HEAP0)
979 break; 1153 break;
980 1154
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1155 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1156 ? 1 : 0;
983 1157
… …
1019 1193
1020/* move an element suitably so it is in a correct place */ 1194/* move an element suitably so it is in a correct place */
1021inline_size void 1195inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1196adjustheap (ANHE *heap, int N, int k)
1023{ 1197{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1198 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 1199 upheap (heap, k);
1026 else 1200 else
1027 downheap (heap, N, k); 1201 downheap (heap, N, k);
1028} 1202}
1029 1203
… …
1042/*****************************************************************************/ 1216/*****************************************************************************/
1043 1217
1044/* associate signal watchers to a signal signal */ 1218/* associate signal watchers to a signal signal */
1045typedef struct 1219typedef struct
1046{ 1220{
1221 EV_ATOMIC_T pending;
1222#if EV_MULTIPLICITY
1223 EV_P;
1224#endif
1047 WL head; 1225 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1226} ANSIG;
1050 1227
1051static ANSIG *signals; 1228static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1229
1056/*****************************************************************************/ 1230/*****************************************************************************/
1057 1231
1058/* used to prepare libev internal fd's */ 1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1233
1072static void noinline 1234static void noinline
1073evpipe_init (EV_P) 1235evpipe_init (EV_P)
1074{ 1236{
1075 if (!ev_is_active (&pipe_w)) 1237 if (!ev_is_active (&pipe_w))
1076 { 1238 {
1077#if EV_USE_EVENTFD 1239# if EV_USE_EVENTFD
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1242 evfd = eventfd (0, 0);
1243
1244 if (evfd >= 0)
1079 { 1245 {
1080 evpipe [0] = -1; 1246 evpipe [0] = -1;
1081 fd_intern (evfd); 1247 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1248 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1249 }
1084 else 1250 else
1085#endif 1251# endif
1086 { 1252 {
1087 while (pipe (evpipe)) 1253 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1254 ev_syserr ("(libev) error creating signal/async pipe");
1089 1255
1090 fd_intern (evpipe [0]); 1256 fd_intern (evpipe [0]);
… …
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1267evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1268{
1103 if (!*flag) 1269 if (!*flag)
1104 { 1270 {
1105 int old_errno = errno; /* save errno because write might clobber it */ 1271 int old_errno = errno; /* save errno because write might clobber it */
1272 char dummy;
1106 1273
1107 *flag = 1; 1274 *flag = 1;
1108 1275
1109#if EV_USE_EVENTFD 1276#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1277 if (evfd >= 0)
… …
1112 uint64_t counter = 1; 1279 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1280 write (evfd, &counter, sizeof (uint64_t));
1114 } 1281 }
1115 else 1282 else
1116#endif 1283#endif
1284 /* win32 people keep sending patches that change this write() to send() */
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286 /* so when you think this write should be a send instead, please find out */
1287 /* where your send() is from - it's definitely not the microsoft send, and */
1288 /* tell me. thank you. */
1117 write (evpipe [1], &old_errno, 1); 1289 write (evpipe [1], &dummy, 1);
1118 1290
1119 errno = old_errno; 1291 errno = old_errno;
1120 } 1292 }
1121} 1293}
1122 1294
1123/* called whenever the libev signal pipe */ 1295/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1296/* got some events (signal, async) */
1125static void 1297static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1298pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1299{
1300 int i;
1301
1128#if EV_USE_EVENTFD 1302#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1303 if (evfd >= 0)
1130 { 1304 {
1131 uint64_t counter; 1305 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1306 read (evfd, &counter, sizeof (uint64_t));
1133 } 1307 }
1134 else 1308 else
1135#endif 1309#endif
1136 { 1310 {
1137 char dummy; 1311 char dummy;
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1138 read (evpipe [0], &dummy, 1); 1313 read (evpipe [0], &dummy, 1);
1139 } 1314 }
1140 1315
1141 if (gotsig && ev_is_default_loop (EV_A)) 1316 if (sig_pending)
1142 { 1317 {
1143 int signum; 1318 sig_pending = 0;
1144 gotsig = 0;
1145 1319
1146 for (signum = signalmax; signum--; ) 1320 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 1321 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 1322 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1323 }
1150 1324
1151#if EV_ASYNC_ENABLE 1325#if EV_ASYNC_ENABLE
1152 if (gotasync) 1326 if (async_pending)
1153 { 1327 {
1154 int i; 1328 async_pending = 0;
1155 gotasync = 0;
1156 1329
1157 for (i = asynccnt; i--; ) 1330 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1331 if (asyncs [i]->sent)
1159 { 1332 {
1160 asyncs [i]->sent = 0; 1333 asyncs [i]->sent = 0;
… …
1168 1341
1169static void 1342static void
1170ev_sighandler (int signum) 1343ev_sighandler (int signum)
1171{ 1344{
1172#if EV_MULTIPLICITY 1345#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 1346 EV_P = signals [signum - 1].loop;
1174#endif 1347#endif
1175 1348
1176#if _WIN32 1349#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1350 signal (signum, ev_sighandler);
1178#endif 1351#endif
1179 1352
1180 signals [signum - 1].gotsig = 1; 1353 signals [signum - 1].pending = 1;
1181 evpipe_write (EV_A_ &gotsig); 1354 evpipe_write (EV_A_ &sig_pending);
1182} 1355}
1183 1356
1184void noinline 1357void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1358ev_feed_signal_event (EV_P_ int signum)
1186{ 1359{
1187 WL w; 1360 WL w;
1188 1361
1362 if (expect_false (signum <= 0 || signum > EV_NSIG))
1363 return;
1364
1365 --signum;
1366
1189#if EV_MULTIPLICITY 1367#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1368 /* it is permissible to try to feed a signal to the wrong loop */
1191#endif 1369 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1370
1193 --signum; 1371 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1372 return;
1373#endif
1197 1374
1198 signals [signum].gotsig = 0; 1375 signals [signum].pending = 0;
1199 1376
1200 for (w = signals [signum].head; w; w = w->next) 1377 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1379}
1203 1380
1381#if EV_USE_SIGNALFD
1382static void
1383sigfdcb (EV_P_ ev_io *iow, int revents)
1384{
1385 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1386
1387 for (;;)
1388 {
1389 ssize_t res = read (sigfd, si, sizeof (si));
1390
1391 /* not ISO-C, as res might be -1, but works with SuS */
1392 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1393 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1394
1395 if (res < (ssize_t)sizeof (si))
1396 break;
1397 }
1398}
1399#endif
1400
1401#endif
1402
1204/*****************************************************************************/ 1403/*****************************************************************************/
1205 1404
1405#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 1406static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 1407
1210static ev_signal childev; 1408static ev_signal childev;
1211 1409
1212#ifndef WIFCONTINUED 1410#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 1411# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 1416child_reap (EV_P_ int chain, int pid, int status)
1219{ 1417{
1220 ev_child *w; 1418 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1419 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 1420
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1421 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 1422 {
1225 if ((w->pid == pid || !w->pid) 1423 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 1424 && (!traced || (w->flags & 1)))
1227 { 1425 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1426 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 1451 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 1452 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1453 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 1454
1257 child_reap (EV_A_ pid, pid, status); 1455 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 1456 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1457 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 1458}
1261 1459
1262#endif 1460#endif
1263 1461
… …
1330#ifdef __APPLE__ 1528#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 1529 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1530 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1531 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 1532#endif
1533#ifdef __FreeBSD__
1534 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1535#endif
1335 1536
1336 return flags; 1537 return flags;
1337} 1538}
1338 1539
1339unsigned int 1540unsigned int
… …
1352ev_backend (EV_P) 1553ev_backend (EV_P)
1353{ 1554{
1354 return backend; 1555 return backend;
1355} 1556}
1356 1557
1558#if EV_FEATURE_API
1357unsigned int 1559unsigned int
1358ev_loop_count (EV_P) 1560ev_iteration (EV_P)
1359{ 1561{
1360 return loop_count; 1562 return loop_count;
1361} 1563}
1362 1564
1565unsigned int
1566ev_depth (EV_P)
1567{
1568 return loop_depth;
1569}
1570
1363void 1571void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365{ 1573{
1366 io_blocktime = interval; 1574 io_blocktime = interval;
1367} 1575}
… …
1369void 1577void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371{ 1579{
1372 timeout_blocktime = interval; 1580 timeout_blocktime = interval;
1373} 1581}
1582
1583void
1584ev_set_userdata (EV_P_ void *data)
1585{
1586 userdata = data;
1587}
1588
1589void *
1590ev_userdata (EV_P)
1591{
1592 return userdata;
1593}
1594
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1596{
1597 invoke_cb = invoke_pending_cb;
1598}
1599
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1601{
1602 release_cb = release;
1603 acquire_cb = acquire;
1604}
1605#endif
1374 1606
1375/* initialise a loop structure, must be zero-initialised */ 1607/* initialise a loop structure, must be zero-initialised */
1376static void noinline 1608static void noinline
1377loop_init (EV_P_ unsigned int flags) 1609loop_init (EV_P_ unsigned int flags)
1378{ 1610{
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1628 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 1629 have_monotonic = 1;
1398 } 1630 }
1399#endif 1631#endif
1400 1632
1633 /* pid check not overridable via env */
1634#ifndef _WIN32
1635 if (flags & EVFLAG_FORKCHECK)
1636 curpid = getpid ();
1637#endif
1638
1639 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS"));
1643
1401 ev_rt_now = ev_time (); 1644 ev_rt_now = ev_time ();
1402 mn_now = get_clock (); 1645 mn_now = get_clock ();
1403 now_floor = mn_now; 1646 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now; 1647 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending;
1650#endif
1405 1651
1406 io_blocktime = 0.; 1652 io_blocktime = 0.;
1407 timeout_blocktime = 0.; 1653 timeout_blocktime = 0.;
1408 backend = 0; 1654 backend = 0;
1409 backend_fd = -1; 1655 backend_fd = -1;
1410 gotasync = 0; 1656 sig_pending = 0;
1657#if EV_ASYNC_ENABLE
1658 async_pending = 0;
1659#endif
1411#if EV_USE_INOTIFY 1660#if EV_USE_INOTIFY
1412 fs_fd = -2; 1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1413#endif 1662#endif
1414 1663#if EV_USE_SIGNALFD
1415 /* pid check not overridable via env */ 1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1416#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid ();
1419#endif 1665#endif
1420
1421 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 1666
1426 if (!(flags & 0x0000ffffU)) 1667 if (!(flags & 0x0000ffffU))
1427 flags |= ev_recommended_backends (); 1668 flags |= ev_recommended_backends ();
1428 1669
1429#if EV_USE_PORT 1670#if EV_USE_PORT
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1683 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 1684#endif
1444 1685
1445 ev_prepare_init (&pending_w, pendingcb); 1686 ev_prepare_init (&pending_w, pendingcb);
1446 1687
1688#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 1689 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 1690 ev_set_priority (&pipe_w, EV_MAXPRI);
1691#endif
1449 } 1692 }
1450} 1693}
1451 1694
1452/* free up a loop structure */ 1695/* free up a loop structure */
1453static void noinline 1696static void noinline
… …
1455{ 1698{
1456 int i; 1699 int i;
1457 1700
1458 if (ev_is_active (&pipe_w)) 1701 if (ev_is_active (&pipe_w))
1459 { 1702 {
1460 ev_ref (EV_A); /* signal watcher */ 1703 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 1704 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 1705
1463#if EV_USE_EVENTFD 1706#if EV_USE_EVENTFD
1464 if (evfd >= 0) 1707 if (evfd >= 0)
1465 close (evfd); 1708 close (evfd);
1466#endif 1709#endif
1467 1710
1468 if (evpipe [0] >= 0) 1711 if (evpipe [0] >= 0)
1469 { 1712 {
1470 close (evpipe [0]); 1713 EV_WIN32_CLOSE_FD (evpipe [0]);
1471 close (evpipe [1]); 1714 EV_WIN32_CLOSE_FD (evpipe [1]);
1472 } 1715 }
1473 } 1716 }
1717
1718#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w))
1720 close (sigfd);
1721#endif
1474 1722
1475#if EV_USE_INOTIFY 1723#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 1724 if (fs_fd >= 0)
1477 close (fs_fd); 1725 close (fs_fd);
1478#endif 1726#endif
… …
1502#if EV_IDLE_ENABLE 1750#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 1751 array_free (idle, [i]);
1504#endif 1752#endif
1505 } 1753 }
1506 1754
1507 ev_free (anfds); anfdmax = 0; 1755 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 1756
1509 /* have to use the microsoft-never-gets-it-right macro */ 1757 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 1758 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 1759 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 1760 array_free (timer, EMPTY);
… …
1547 1795
1548 if (ev_is_active (&pipe_w)) 1796 if (ev_is_active (&pipe_w))
1549 { 1797 {
1550 /* this "locks" the handlers against writing to the pipe */ 1798 /* this "locks" the handlers against writing to the pipe */
1551 /* while we modify the fd vars */ 1799 /* while we modify the fd vars */
1552 gotsig = 1; 1800 sig_pending = 1;
1553#if EV_ASYNC_ENABLE 1801#if EV_ASYNC_ENABLE
1554 gotasync = 1; 1802 async_pending = 1;
1555#endif 1803#endif
1556 1804
1557 ev_ref (EV_A); 1805 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 1806 ev_io_stop (EV_A_ &pipe_w);
1559 1807
… …
1562 close (evfd); 1810 close (evfd);
1563#endif 1811#endif
1564 1812
1565 if (evpipe [0] >= 0) 1813 if (evpipe [0] >= 0)
1566 { 1814 {
1567 close (evpipe [0]); 1815 EV_WIN32_CLOSE_FD (evpipe [0]);
1568 close (evpipe [1]); 1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1569 } 1817 }
1570 1818
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1571 evpipe_init (EV_A); 1820 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 1821 /* now iterate over everything, in case we missed something */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 1822 pipecb (EV_A_ &pipe_w, EV_READ);
1823#endif
1574 } 1824 }
1575 1825
1576 postfork = 0; 1826 postfork = 0;
1577} 1827}
1578 1828
1579#if EV_MULTIPLICITY 1829#if EV_MULTIPLICITY
1580 1830
1581struct ev_loop * 1831struct ev_loop *
1582ev_loop_new (unsigned int flags) 1832ev_loop_new (unsigned int flags)
1583{ 1833{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 1835
1586 memset (loop, 0, sizeof (struct ev_loop)); 1836 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 1837 loop_init (EV_A_ flags);
1589 1838
1590 if (ev_backend (EV_A)) 1839 if (ev_backend (EV_A))
1591 return loop; 1840 return EV_A;
1592 1841
1593 return 0; 1842 return 0;
1594} 1843}
1595 1844
1596void 1845void
… …
1603void 1852void
1604ev_loop_fork (EV_P) 1853ev_loop_fork (EV_P)
1605{ 1854{
1606 postfork = 1; /* must be in line with ev_default_fork */ 1855 postfork = 1; /* must be in line with ev_default_fork */
1607} 1856}
1857#endif /* multiplicity */
1608 1858
1609#if EV_VERIFY 1859#if EV_VERIFY
1610static void noinline 1860static void noinline
1611verify_watcher (EV_P_ W w) 1861verify_watcher (EV_P_ W w)
1612{ 1862{
… …
1640 verify_watcher (EV_A_ ws [cnt]); 1890 verify_watcher (EV_A_ ws [cnt]);
1641 } 1891 }
1642} 1892}
1643#endif 1893#endif
1644 1894
1895#if EV_FEATURE_API
1645void 1896void
1646ev_loop_verify (EV_P) 1897ev_verify (EV_P)
1647{ 1898{
1648#if EV_VERIFY 1899#if EV_VERIFY
1649 int i; 1900 int i;
1650 WL w; 1901 WL w;
1651 1902
… …
1690#if EV_ASYNC_ENABLE 1941#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 1942 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 1943 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 1944#endif
1694 1945
1946#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 1947 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 1948 array_verify (EV_A_ (W *)prepares, preparecnt);
1949#endif
1697 1950
1951#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 1952 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 1953 array_verify (EV_A_ (W *)checks, checkcnt);
1954#endif
1700 1955
1701# if 0 1956# if 0
1957#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1958 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1959 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1960#endif
1704# endif 1961# endif
1705#endif 1962#endif
1706} 1963}
1707 1964#endif
1708#endif /* multiplicity */
1709 1965
1710#if EV_MULTIPLICITY 1966#if EV_MULTIPLICITY
1711struct ev_loop * 1967struct ev_loop *
1712ev_default_loop_init (unsigned int flags) 1968ev_default_loop_init (unsigned int flags)
1713#else 1969#else
… …
1716#endif 1972#endif
1717{ 1973{
1718 if (!ev_default_loop_ptr) 1974 if (!ev_default_loop_ptr)
1719 { 1975 {
1720#if EV_MULTIPLICITY 1976#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1977 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 1978#else
1723 ev_default_loop_ptr = 1; 1979 ev_default_loop_ptr = 1;
1724#endif 1980#endif
1725 1981
1726 loop_init (EV_A_ flags); 1982 loop_init (EV_A_ flags);
1727 1983
1728 if (ev_backend (EV_A)) 1984 if (ev_backend (EV_A))
1729 { 1985 {
1730#ifndef _WIN32 1986#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 1987 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 1988 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 1989 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1990 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 1991#endif
… …
1743 1999
1744void 2000void
1745ev_default_destroy (void) 2001ev_default_destroy (void)
1746{ 2002{
1747#if EV_MULTIPLICITY 2003#if EV_MULTIPLICITY
1748 struct ev_loop *loop = ev_default_loop_ptr; 2004 EV_P = ev_default_loop_ptr;
1749#endif 2005#endif
1750 2006
1751 ev_default_loop_ptr = 0; 2007 ev_default_loop_ptr = 0;
1752 2008
1753#ifndef _WIN32 2009#if EV_CHILD_ENABLE
1754 ev_ref (EV_A); /* child watcher */ 2010 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev); 2011 ev_signal_stop (EV_A_ &childev);
1756#endif 2012#endif
1757 2013
1758 loop_destroy (EV_A); 2014 loop_destroy (EV_A);
… …
1760 2016
1761void 2017void
1762ev_default_fork (void) 2018ev_default_fork (void)
1763{ 2019{
1764#if EV_MULTIPLICITY 2020#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr; 2021 EV_P = ev_default_loop_ptr;
1766#endif 2022#endif
1767 2023
1768 postfork = 1; /* must be in line with ev_loop_fork */ 2024 postfork = 1; /* must be in line with ev_loop_fork */
1769} 2025}
1770 2026
… …
1774ev_invoke (EV_P_ void *w, int revents) 2030ev_invoke (EV_P_ void *w, int revents)
1775{ 2031{
1776 EV_CB_INVOKE ((W)w, revents); 2032 EV_CB_INVOKE ((W)w, revents);
1777} 2033}
1778 2034
1779inline_speed void 2035unsigned int
1780call_pending (EV_P) 2036ev_pending_count (EV_P)
2037{
2038 int pri;
2039 unsigned int count = 0;
2040
2041 for (pri = NUMPRI; pri--; )
2042 count += pendingcnt [pri];
2043
2044 return count;
2045}
2046
2047void noinline
2048ev_invoke_pending (EV_P)
1781{ 2049{
1782 int pri; 2050 int pri;
1783 2051
1784 for (pri = NUMPRI; pri--; ) 2052 for (pri = NUMPRI; pri--; )
1785 while (pendingcnt [pri]) 2053 while (pendingcnt [pri])
… …
1852 EV_FREQUENT_CHECK; 2120 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 2121 feed_reverse (EV_A_ (W)w);
1854 } 2122 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2123 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 2124
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 2125 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 2126 }
1859} 2127}
1860 2128
1861#if EV_PERIODIC_ENABLE 2129#if EV_PERIODIC_ENABLE
1862/* make periodics pending */ 2130/* make periodics pending */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 2183 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 2184 }
1917} 2185}
1918 2186
1919/* simply recalculate all periodics */ 2187/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2188/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 2189static void noinline
1922periodics_reschedule (EV_P) 2190periodics_reschedule (EV_P)
1923{ 2191{
1924 int i; 2192 int i;
1925 2193
… …
1953 ANHE_at_cache (*he); 2221 ANHE_at_cache (*he);
1954 } 2222 }
1955} 2223}
1956 2224
1957/* fetch new monotonic and realtime times from the kernel */ 2225/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 2226/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 2227inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 2228time_update (EV_P_ ev_tstamp max_block)
1961{ 2229{
1962#if EV_USE_MONOTONIC 2230#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 2231 if (expect_true (have_monotonic))
… …
2020 2288
2021 mn_now = ev_rt_now; 2289 mn_now = ev_rt_now;
2022 } 2290 }
2023} 2291}
2024 2292
2025static int loop_done;
2026
2027void 2293void
2028ev_loop (EV_P_ int flags) 2294ev_loop (EV_P_ int flags)
2029{ 2295{
2296#if EV_FEATURE_API
2297 ++loop_depth;
2298#endif
2299
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2301
2030 loop_done = EVUNLOOP_CANCEL; 2302 loop_done = EVUNLOOP_CANCEL;
2031 2303
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 2305
2034 do 2306 do
2035 { 2307 {
2036#if EV_VERIFY >= 2 2308#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 2309 ev_verify (EV_A);
2038#endif 2310#endif
2039 2311
2040#ifndef _WIN32 2312#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 2313 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 2314 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 2322 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 2323 if (expect_false (postfork))
2052 if (forkcnt) 2324 if (forkcnt)
2053 { 2325 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2326 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 2327 EV_INVOKE_PENDING;
2056 } 2328 }
2057#endif 2329#endif
2058 2330
2331#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 2332 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 2333 if (expect_false (preparecnt))
2061 { 2334 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2335 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 2336 EV_INVOKE_PENDING;
2064 } 2337 }
2338#endif
2339
2340 if (expect_false (loop_done))
2341 break;
2065 2342
2066 /* we might have forked, so reify kernel state if necessary */ 2343 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 2344 if (expect_false (postfork))
2068 loop_fork (EV_A); 2345 loop_fork (EV_A);
2069 2346
… …
2075 ev_tstamp waittime = 0.; 2352 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 2353 ev_tstamp sleeptime = 0.;
2077 2354
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2079 { 2356 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2080 /* update time to cancel out callback processing overhead */ 2360 /* update time to cancel out callback processing overhead */
2081 time_update (EV_A_ 1e100); 2361 time_update (EV_A_ 1e100);
2082 2362
2083 waittime = MAX_BLOCKTIME; 2363 waittime = MAX_BLOCKTIME;
2084 2364
… …
2094 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2095 if (waittime > to) waittime = to; 2375 if (waittime > to) waittime = to;
2096 } 2376 }
2097#endif 2377#endif
2098 2378
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */
2099 if (expect_false (waittime < timeout_blocktime)) 2380 if (expect_false (waittime < timeout_blocktime))
2100 waittime = timeout_blocktime; 2381 waittime = timeout_blocktime;
2101 2382
2102 sleeptime = waittime - backend_fudge; 2383 /* extra check because io_blocktime is commonly 0 */
2103
2104 if (expect_true (sleeptime > io_blocktime)) 2384 if (expect_false (io_blocktime))
2105 sleeptime = io_blocktime;
2106
2107 if (sleeptime)
2108 { 2385 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387
2388 if (sleeptime > waittime - backend_fudge)
2389 sleeptime = waittime - backend_fudge;
2390
2391 if (expect_true (sleeptime > 0.))
2392 {
2109 ev_sleep (sleeptime); 2393 ev_sleep (sleeptime);
2110 waittime -= sleeptime; 2394 waittime -= sleeptime;
2395 }
2111 } 2396 }
2112 } 2397 }
2113 2398
2399#if EV_FEATURE_API
2114 ++loop_count; 2400 ++loop_count;
2401#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2115 backend_poll (EV_A_ waittime); 2403 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2116 2405
2117 /* update ev_rt_now, do magic */ 2406 /* update ev_rt_now, do magic */
2118 time_update (EV_A_ waittime + sleeptime); 2407 time_update (EV_A_ waittime + sleeptime);
2119 } 2408 }
2120 2409
… …
2127#if EV_IDLE_ENABLE 2416#if EV_IDLE_ENABLE
2128 /* queue idle watchers unless other events are pending */ 2417 /* queue idle watchers unless other events are pending */
2129 idle_reify (EV_A); 2418 idle_reify (EV_A);
2130#endif 2419#endif
2131 2420
2421#if EV_CHECK_ENABLE
2132 /* queue check watchers, to be executed first */ 2422 /* queue check watchers, to be executed first */
2133 if (expect_false (checkcnt)) 2423 if (expect_false (checkcnt))
2134 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2424 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2425#endif
2135 2426
2136 call_pending (EV_A); 2427 EV_INVOKE_PENDING;
2137 } 2428 }
2138 while (expect_true ( 2429 while (expect_true (
2139 activecnt 2430 activecnt
2140 && !loop_done 2431 && !loop_done
2141 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2142 )); 2433 ));
2143 2434
2144 if (loop_done == EVUNLOOP_ONE) 2435 if (loop_done == EVUNLOOP_ONE)
2145 loop_done = EVUNLOOP_CANCEL; 2436 loop_done = EVUNLOOP_CANCEL;
2437
2438#if EV_FEATURE_API
2439 --loop_depth;
2440#endif
2146} 2441}
2147 2442
2148void 2443void
2149ev_unloop (EV_P_ int how) 2444ev_unloop (EV_P_ int how)
2150{ 2445{
… …
2201inline_size void 2496inline_size void
2202wlist_del (WL *head, WL elem) 2497wlist_del (WL *head, WL elem)
2203{ 2498{
2204 while (*head) 2499 while (*head)
2205 { 2500 {
2206 if (*head == elem) 2501 if (expect_true (*head == elem))
2207 { 2502 {
2208 *head = elem->next; 2503 *head = elem->next;
2209 return; 2504 break;
2210 } 2505 }
2211 2506
2212 head = &(*head)->next; 2507 head = &(*head)->next;
2213 } 2508 }
2214} 2509}
… …
2242} 2537}
2243 2538
2244inline_size void 2539inline_size void
2245pri_adjust (EV_P_ W w) 2540pri_adjust (EV_P_ W w)
2246{ 2541{
2247 int pri = w->priority; 2542 int pri = ev_priority (w);
2248 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2543 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2544 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250 w->priority = pri; 2545 ev_set_priority (w, pri);
2251} 2546}
2252 2547
2253inline_speed void 2548inline_speed void
2254ev_start (EV_P_ W w, int active) 2549ev_start (EV_P_ W w, int active)
2255{ 2550{
… …
2274 2569
2275 if (expect_false (ev_is_active (w))) 2570 if (expect_false (ev_is_active (w)))
2276 return; 2571 return;
2277 2572
2278 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2573 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2574 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2280 2575
2281 EV_FREQUENT_CHECK; 2576 EV_FREQUENT_CHECK;
2282 2577
2283 ev_start (EV_A_ (W)w, 1); 2578 ev_start (EV_A_ (W)w, 1);
2284 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2285 wlist_add (&anfds[fd].head, (WL)w); 2580 wlist_add (&anfds[fd].head, (WL)w);
2286 2581
2287 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2288 w->events &= ~EV__IOFDSET; 2583 w->events &= ~EV__IOFDSET;
2289 2584
2290 EV_FREQUENT_CHECK; 2585 EV_FREQUENT_CHECK;
2291} 2586}
2292 2587
… …
2354 timers [active] = timers [timercnt + HEAP0]; 2649 timers [active] = timers [timercnt + HEAP0];
2355 adjustheap (timers, timercnt, active); 2650 adjustheap (timers, timercnt, active);
2356 } 2651 }
2357 } 2652 }
2358 2653
2359 EV_FREQUENT_CHECK;
2360
2361 ev_at (w) -= mn_now; 2654 ev_at (w) -= mn_now;
2362 2655
2363 ev_stop (EV_A_ (W)w); 2656 ev_stop (EV_A_ (W)w);
2657
2658 EV_FREQUENT_CHECK;
2364} 2659}
2365 2660
2366void noinline 2661void noinline
2367ev_timer_again (EV_P_ ev_timer *w) 2662ev_timer_again (EV_P_ ev_timer *w)
2368{ 2663{
… …
2386 } 2681 }
2387 2682
2388 EV_FREQUENT_CHECK; 2683 EV_FREQUENT_CHECK;
2389} 2684}
2390 2685
2686ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w)
2688{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690}
2691
2391#if EV_PERIODIC_ENABLE 2692#if EV_PERIODIC_ENABLE
2392void noinline 2693void noinline
2393ev_periodic_start (EV_P_ ev_periodic *w) 2694ev_periodic_start (EV_P_ ev_periodic *w)
2394{ 2695{
2395 if (expect_false (ev_is_active (w))) 2696 if (expect_false (ev_is_active (w)))
… …
2441 periodics [active] = periodics [periodiccnt + HEAP0]; 2742 periodics [active] = periodics [periodiccnt + HEAP0];
2442 adjustheap (periodics, periodiccnt, active); 2743 adjustheap (periodics, periodiccnt, active);
2443 } 2744 }
2444 } 2745 }
2445 2746
2446 EV_FREQUENT_CHECK;
2447
2448 ev_stop (EV_A_ (W)w); 2747 ev_stop (EV_A_ (W)w);
2748
2749 EV_FREQUENT_CHECK;
2449} 2750}
2450 2751
2451void noinline 2752void noinline
2452ev_periodic_again (EV_P_ ev_periodic *w) 2753ev_periodic_again (EV_P_ ev_periodic *w)
2453{ 2754{
… …
2459 2760
2460#ifndef SA_RESTART 2761#ifndef SA_RESTART
2461# define SA_RESTART 0 2762# define SA_RESTART 0
2462#endif 2763#endif
2463 2764
2765#if EV_SIGNAL_ENABLE
2766
2464void noinline 2767void noinline
2465ev_signal_start (EV_P_ ev_signal *w) 2768ev_signal_start (EV_P_ ev_signal *w)
2466{ 2769{
2467#if EV_MULTIPLICITY
2468 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469#endif
2470 if (expect_false (ev_is_active (w))) 2770 if (expect_false (ev_is_active (w)))
2471 return; 2771 return;
2472 2772
2473 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2474 2774
2475 evpipe_init (EV_A); 2775#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2476 2778
2477 EV_FREQUENT_CHECK; 2779 signals [w->signum - 1].loop = EV_A;
2780#endif
2478 2781
2782 EV_FREQUENT_CHECK;
2783
2784#if EV_USE_SIGNALFD
2785 if (sigfd == -2)
2479 { 2786 {
2480#ifndef _WIN32 2787 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2481 sigset_t full, prev; 2788 if (sigfd < 0 && errno == EINVAL)
2482 sigfillset (&full); 2789 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483 sigprocmask (SIG_SETMASK, &full, &prev);
2484#endif
2485 2790
2486 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2791 if (sigfd >= 0)
2792 {
2793 fd_intern (sigfd); /* doing it twice will not hurt */
2487 2794
2488#ifndef _WIN32 2795 sigemptyset (&sigfd_set);
2489 sigprocmask (SIG_SETMASK, &prev, 0); 2796
2490#endif 2797 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2798 ev_set_priority (&sigfd_w, EV_MAXPRI);
2799 ev_io_start (EV_A_ &sigfd_w);
2800 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2801 }
2491 } 2802 }
2803
2804 if (sigfd >= 0)
2805 {
2806 /* TODO: check .head */
2807 sigaddset (&sigfd_set, w->signum);
2808 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2809
2810 signalfd (sigfd, &sigfd_set, 0);
2811 }
2812#endif
2492 2813
2493 ev_start (EV_A_ (W)w, 1); 2814 ev_start (EV_A_ (W)w, 1);
2494 wlist_add (&signals [w->signum - 1].head, (WL)w); 2815 wlist_add (&signals [w->signum - 1].head, (WL)w);
2495 2816
2496 if (!((WL)w)->next) 2817 if (!((WL)w)->next)
2818# if EV_USE_SIGNALFD
2819 if (sigfd < 0) /*TODO*/
2820# endif
2497 { 2821 {
2498#if _WIN32 2822# ifdef _WIN32
2823 evpipe_init (EV_A);
2824
2499 signal (w->signum, ev_sighandler); 2825 signal (w->signum, ev_sighandler);
2500#else 2826# else
2501 struct sigaction sa; 2827 struct sigaction sa;
2828
2829 evpipe_init (EV_A);
2830
2502 sa.sa_handler = ev_sighandler; 2831 sa.sa_handler = ev_sighandler;
2503 sigfillset (&sa.sa_mask); 2832 sigfillset (&sa.sa_mask);
2504 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505 sigaction (w->signum, &sa, 0); 2834 sigaction (w->signum, &sa, 0);
2835
2836 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2506#endif 2839#endif
2507 } 2840 }
2508 2841
2509 EV_FREQUENT_CHECK; 2842 EV_FREQUENT_CHECK;
2510} 2843}
2511 2844
2512void noinline 2845void noinline
… …
2520 2853
2521 wlist_del (&signals [w->signum - 1].head, (WL)w); 2854 wlist_del (&signals [w->signum - 1].head, (WL)w);
2522 ev_stop (EV_A_ (W)w); 2855 ev_stop (EV_A_ (W)w);
2523 2856
2524 if (!signals [w->signum - 1].head) 2857 if (!signals [w->signum - 1].head)
2858 {
2859#if EV_MULTIPLICITY
2860 signals [w->signum - 1].loop = 0; /* unattach from signal */
2861#endif
2862#if EV_USE_SIGNALFD
2863 if (sigfd >= 0)
2864 {
2865 sigset_t ss;
2866
2867 sigemptyset (&ss);
2868 sigaddset (&ss, w->signum);
2869 sigdelset (&sigfd_set, w->signum);
2870
2871 signalfd (sigfd, &sigfd_set, 0);
2872 sigprocmask (SIG_UNBLOCK, &ss, 0);
2873 }
2874 else
2875#endif
2525 signal (w->signum, SIG_DFL); 2876 signal (w->signum, SIG_DFL);
2877 }
2526 2878
2527 EV_FREQUENT_CHECK; 2879 EV_FREQUENT_CHECK;
2528} 2880}
2881
2882#endif
2883
2884#if EV_CHILD_ENABLE
2529 2885
2530void 2886void
2531ev_child_start (EV_P_ ev_child *w) 2887ev_child_start (EV_P_ ev_child *w)
2532{ 2888{
2533#if EV_MULTIPLICITY 2889#if EV_MULTIPLICITY
… …
2537 return; 2893 return;
2538 2894
2539 EV_FREQUENT_CHECK; 2895 EV_FREQUENT_CHECK;
2540 2896
2541 ev_start (EV_A_ (W)w, 1); 2897 ev_start (EV_A_ (W)w, 1);
2542 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2898 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2543 2899
2544 EV_FREQUENT_CHECK; 2900 EV_FREQUENT_CHECK;
2545} 2901}
2546 2902
2547void 2903void
… …
2551 if (expect_false (!ev_is_active (w))) 2907 if (expect_false (!ev_is_active (w)))
2552 return; 2908 return;
2553 2909
2554 EV_FREQUENT_CHECK; 2910 EV_FREQUENT_CHECK;
2555 2911
2556 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2912 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2557 ev_stop (EV_A_ (W)w); 2913 ev_stop (EV_A_ (W)w);
2558 2914
2559 EV_FREQUENT_CHECK; 2915 EV_FREQUENT_CHECK;
2560} 2916}
2917
2918#endif
2561 2919
2562#if EV_STAT_ENABLE 2920#if EV_STAT_ENABLE
2563 2921
2564# ifdef _WIN32 2922# ifdef _WIN32
2565# undef lstat 2923# undef lstat
… …
2571#define MIN_STAT_INTERVAL 0.1074891 2929#define MIN_STAT_INTERVAL 0.1074891
2572 2930
2573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2931static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2574 2932
2575#if EV_USE_INOTIFY 2933#if EV_USE_INOTIFY
2576# define EV_INOTIFY_BUFSIZE 8192 2934
2935/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2577 2937
2578static void noinline 2938static void noinline
2579infy_add (EV_P_ ev_stat *w) 2939infy_add (EV_P_ ev_stat *w)
2580{ 2940{
2581 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); 2941 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);
2582 2942
2583 if (w->wd < 0) 2943 if (w->wd >= 0)
2944 {
2945 struct statfs sfs;
2946
2947 /* now local changes will be tracked by inotify, but remote changes won't */
2948 /* unless the filesystem is known to be local, we therefore still poll */
2949 /* also do poll on <2.6.25, but with normal frequency */
2950
2951 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */
2956 || sfs.f_type == 0x3153464a /* jfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */
2959 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2584 { 2963 }
2964 else
2965 {
2966 /* can't use inotify, continue to stat */
2585 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587 2968
2588 /* monitor some parent directory for speedup hints */ 2969 /* if path is not there, monitor some parent directory for speedup hints */
2589 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2970 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2590 /* but an efficiency issue only */ 2971 /* but an efficiency issue only */
2591 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2972 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2592 { 2973 {
2593 char path [4096]; 2974 char path [4096];
… …
2609 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2610 } 2991 }
2611 } 2992 }
2612 2993
2613 if (w->wd >= 0) 2994 if (w->wd >= 0)
2614 {
2615 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2995 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2616 2996
2617 /* now local changes will be tracked by inotify, but remote changes won't */ 2997 /* now re-arm timer, if required */
2618 /* unless the filesystem it known to be local, we therefore still poll */ 2998 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619 /* also do poll on <2.6.25, but with normal frequency */
2620 struct statfs sfs;
2621
2622 if (fs_2625 && !statfs (w->path, &sfs))
2623 if (sfs.f_type == 0x1373 /* devfs */
2624 || sfs.f_type == 0xEF53 /* ext2/3 */
2625 || sfs.f_type == 0x3153464a /* jfs */
2626 || sfs.f_type == 0x52654973 /* reiser3 */
2627 || sfs.f_type == 0x01021994 /* tempfs */
2628 || sfs.f_type == 0x58465342 /* xfs */)
2629 return;
2630
2631 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632 ev_timer_again (EV_A_ &w->timer); 2999 ev_timer_again (EV_A_ &w->timer);
2633 } 3000 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634} 3001}
2635 3002
2636static void noinline 3003static void noinline
2637infy_del (EV_P_ ev_stat *w) 3004infy_del (EV_P_ ev_stat *w)
2638{ 3005{
… …
2641 3008
2642 if (wd < 0) 3009 if (wd < 0)
2643 return; 3010 return;
2644 3011
2645 w->wd = -2; 3012 w->wd = -2;
2646 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3013 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2647 wlist_del (&fs_hash [slot].head, (WL)w); 3014 wlist_del (&fs_hash [slot].head, (WL)w);
2648 3015
2649 /* remove this watcher, if others are watching it, they will rearm */ 3016 /* remove this watcher, if others are watching it, they will rearm */
2650 inotify_rm_watch (fs_fd, wd); 3017 inotify_rm_watch (fs_fd, wd);
2651} 3018}
… …
2653static void noinline 3020static void noinline
2654infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3021infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2655{ 3022{
2656 if (slot < 0) 3023 if (slot < 0)
2657 /* overflow, need to check for all hash slots */ 3024 /* overflow, need to check for all hash slots */
2658 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3025 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2659 infy_wd (EV_A_ slot, wd, ev); 3026 infy_wd (EV_A_ slot, wd, ev);
2660 else 3027 else
2661 { 3028 {
2662 WL w_; 3029 WL w_;
2663 3030
2664 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3031 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2665 { 3032 {
2666 ev_stat *w = (ev_stat *)w_; 3033 ev_stat *w = (ev_stat *)w_;
2667 w_ = w_->next; /* lets us remove this watcher and all before it */ 3034 w_ = w_->next; /* lets us remove this watcher and all before it */
2668 3035
2669 if (w->wd == wd || wd == -1) 3036 if (w->wd == wd || wd == -1)
2670 { 3037 {
2671 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3038 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2672 { 3039 {
2673 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3040 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2674 w->wd = -1; 3041 w->wd = -1;
2675 infy_add (EV_A_ w); /* re-add, no matter what */ 3042 infy_add (EV_A_ w); /* re-add, no matter what */
2676 } 3043 }
2677 3044
2678 stat_timer_cb (EV_A_ &w->timer, 0); 3045 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2683 3050
2684static void 3051static void
2685infy_cb (EV_P_ ev_io *w, int revents) 3052infy_cb (EV_P_ ev_io *w, int revents)
2686{ 3053{
2687 char buf [EV_INOTIFY_BUFSIZE]; 3054 char buf [EV_INOTIFY_BUFSIZE];
2688 struct inotify_event *ev = (struct inotify_event *)buf;
2689 int ofs; 3055 int ofs;
2690 int len = read (fs_fd, buf, sizeof (buf)); 3056 int len = read (fs_fd, buf, sizeof (buf));
2691 3057
2692 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3058 for (ofs = 0; ofs < len; )
3059 {
3060 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2693 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3061 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len;
3063 }
3064}
3065
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
2694} 3096}
2695 3097
2696inline_size void 3098inline_size void
2697check_2625 (EV_P) 3099ev_check_2625 (EV_P)
2698{ 3100{
2699 /* kernels < 2.6.25 are borked 3101 /* kernels < 2.6.25 are borked
2700 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2701 */ 3103 */
2702 struct utsname buf; 3104 if (ev_linux_version () < 0x020619)
2703 int major, minor, micro;
2704
2705 if (uname (&buf))
2706 return; 3105 return;
2707 3106
2708 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709 return;
2710
2711 if (major < 2
2712 || (major == 2 && minor < 6)
2713 || (major == 2 && minor == 6 && micro < 25))
2714 return;
2715
2716 fs_2625 = 1; 3107 fs_2625 = 1;
3108}
3109
3110inline_size int
3111infy_newfd (void)
3112{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0)
3116 return fd;
3117#endif
3118 return inotify_init ();
2717} 3119}
2718 3120
2719inline_size void 3121inline_size void
2720infy_init (EV_P) 3122infy_init (EV_P)
2721{ 3123{
2722 if (fs_fd != -2) 3124 if (fs_fd != -2)
2723 return; 3125 return;
2724 3126
2725 fs_fd = -1; 3127 fs_fd = -1;
2726 3128
2727 check_2625 (EV_A); 3129 ev_check_2625 (EV_A);
2728 3130
2729 fs_fd = inotify_init (); 3131 fs_fd = infy_newfd ();
2730 3132
2731 if (fs_fd >= 0) 3133 if (fs_fd >= 0)
2732 { 3134 {
3135 fd_intern (fs_fd);
2733 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3136 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734 ev_set_priority (&fs_w, EV_MAXPRI); 3137 ev_set_priority (&fs_w, EV_MAXPRI);
2735 ev_io_start (EV_A_ &fs_w); 3138 ev_io_start (EV_A_ &fs_w);
3139 ev_unref (EV_A);
2736 } 3140 }
2737} 3141}
2738 3142
2739inline_size void 3143inline_size void
2740infy_fork (EV_P) 3144infy_fork (EV_P)
… …
2742 int slot; 3146 int slot;
2743 3147
2744 if (fs_fd < 0) 3148 if (fs_fd < 0)
2745 return; 3149 return;
2746 3150
3151 ev_ref (EV_A);
3152 ev_io_stop (EV_A_ &fs_w);
2747 close (fs_fd); 3153 close (fs_fd);
2748 fs_fd = inotify_init (); 3154 fs_fd = infy_newfd ();
2749 3155
3156 if (fs_fd >= 0)
3157 {
3158 fd_intern (fs_fd);
3159 ev_io_set (&fs_w, fs_fd, EV_READ);
3160 ev_io_start (EV_A_ &fs_w);
3161 ev_unref (EV_A);
3162 }
3163
2750 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3164 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2751 { 3165 {
2752 WL w_ = fs_hash [slot].head; 3166 WL w_ = fs_hash [slot].head;
2753 fs_hash [slot].head = 0; 3167 fs_hash [slot].head = 0;
2754 3168
2755 while (w_) 3169 while (w_)
… …
2760 w->wd = -1; 3174 w->wd = -1;
2761 3175
2762 if (fs_fd >= 0) 3176 if (fs_fd >= 0)
2763 infy_add (EV_A_ w); /* re-add, no matter what */ 3177 infy_add (EV_A_ w); /* re-add, no matter what */
2764 else 3178 else
3179 {
3180 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3181 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2765 ev_timer_again (EV_A_ &w->timer); 3182 ev_timer_again (EV_A_ &w->timer);
3183 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3184 }
2766 } 3185 }
2767 } 3186 }
2768} 3187}
2769 3188
2770#endif 3189#endif
… …
2787static void noinline 3206static void noinline
2788stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3207stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789{ 3208{
2790 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3209 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2791 3210
2792 /* we copy this here each the time so that */ 3211 ev_statdata prev = w->attr;
2793 /* prev has the old value when the callback gets invoked */
2794 w->prev = w->attr;
2795 ev_stat_stat (EV_A_ w); 3212 ev_stat_stat (EV_A_ w);
2796 3213
2797 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3214 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2798 if ( 3215 if (
2799 w->prev.st_dev != w->attr.st_dev 3216 prev.st_dev != w->attr.st_dev
2800 || w->prev.st_ino != w->attr.st_ino 3217 || prev.st_ino != w->attr.st_ino
2801 || w->prev.st_mode != w->attr.st_mode 3218 || prev.st_mode != w->attr.st_mode
2802 || w->prev.st_nlink != w->attr.st_nlink 3219 || prev.st_nlink != w->attr.st_nlink
2803 || w->prev.st_uid != w->attr.st_uid 3220 || prev.st_uid != w->attr.st_uid
2804 || w->prev.st_gid != w->attr.st_gid 3221 || prev.st_gid != w->attr.st_gid
2805 || w->prev.st_rdev != w->attr.st_rdev 3222 || prev.st_rdev != w->attr.st_rdev
2806 || w->prev.st_size != w->attr.st_size 3223 || prev.st_size != w->attr.st_size
2807 || w->prev.st_atime != w->attr.st_atime 3224 || prev.st_atime != w->attr.st_atime
2808 || w->prev.st_mtime != w->attr.st_mtime 3225 || prev.st_mtime != w->attr.st_mtime
2809 || w->prev.st_ctime != w->attr.st_ctime 3226 || prev.st_ctime != w->attr.st_ctime
2810 ) { 3227 ) {
3228 /* we only update w->prev on actual differences */
3229 /* in case we test more often than invoke the callback, */
3230 /* to ensure that prev is always different to attr */
3231 w->prev = prev;
3232
2811 #if EV_USE_INOTIFY 3233 #if EV_USE_INOTIFY
2812 if (fs_fd >= 0) 3234 if (fs_fd >= 0)
2813 { 3235 {
2814 infy_del (EV_A_ w); 3236 infy_del (EV_A_ w);
2815 infy_add (EV_A_ w); 3237 infy_add (EV_A_ w);
… …
2840 3262
2841 if (fs_fd >= 0) 3263 if (fs_fd >= 0)
2842 infy_add (EV_A_ w); 3264 infy_add (EV_A_ w);
2843 else 3265 else
2844#endif 3266#endif
3267 {
2845 ev_timer_again (EV_A_ &w->timer); 3268 ev_timer_again (EV_A_ &w->timer);
3269 ev_unref (EV_A);
3270 }
2846 3271
2847 ev_start (EV_A_ (W)w, 1); 3272 ev_start (EV_A_ (W)w, 1);
2848 3273
2849 EV_FREQUENT_CHECK; 3274 EV_FREQUENT_CHECK;
2850} 3275}
… …
2859 EV_FREQUENT_CHECK; 3284 EV_FREQUENT_CHECK;
2860 3285
2861#if EV_USE_INOTIFY 3286#if EV_USE_INOTIFY
2862 infy_del (EV_A_ w); 3287 infy_del (EV_A_ w);
2863#endif 3288#endif
3289
3290 if (ev_is_active (&w->timer))
3291 {
3292 ev_ref (EV_A);
2864 ev_timer_stop (EV_A_ &w->timer); 3293 ev_timer_stop (EV_A_ &w->timer);
3294 }
2865 3295
2866 ev_stop (EV_A_ (W)w); 3296 ev_stop (EV_A_ (W)w);
2867 3297
2868 EV_FREQUENT_CHECK; 3298 EV_FREQUENT_CHECK;
2869} 3299}
… …
2914 3344
2915 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2916} 3346}
2917#endif 3347#endif
2918 3348
3349#if EV_PREPARE_ENABLE
2919void 3350void
2920ev_prepare_start (EV_P_ ev_prepare *w) 3351ev_prepare_start (EV_P_ ev_prepare *w)
2921{ 3352{
2922 if (expect_false (ev_is_active (w))) 3353 if (expect_false (ev_is_active (w)))
2923 return; 3354 return;
… …
2949 3380
2950 ev_stop (EV_A_ (W)w); 3381 ev_stop (EV_A_ (W)w);
2951 3382
2952 EV_FREQUENT_CHECK; 3383 EV_FREQUENT_CHECK;
2953} 3384}
3385#endif
2954 3386
3387#if EV_CHECK_ENABLE
2955void 3388void
2956ev_check_start (EV_P_ ev_check *w) 3389ev_check_start (EV_P_ ev_check *w)
2957{ 3390{
2958 if (expect_false (ev_is_active (w))) 3391 if (expect_false (ev_is_active (w)))
2959 return; 3392 return;
… …
2985 3418
2986 ev_stop (EV_A_ (W)w); 3419 ev_stop (EV_A_ (W)w);
2987 3420
2988 EV_FREQUENT_CHECK; 3421 EV_FREQUENT_CHECK;
2989} 3422}
3423#endif
2990 3424
2991#if EV_EMBED_ENABLE 3425#if EV_EMBED_ENABLE
2992void noinline 3426void noinline
2993ev_embed_sweep (EV_P_ ev_embed *w) 3427ev_embed_sweep (EV_P_ ev_embed *w)
2994{ 3428{
… …
3010embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011{ 3445{
3012 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3446 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3013 3447
3014 { 3448 {
3015 struct ev_loop *loop = w->other; 3449 EV_P = w->other;
3016 3450
3017 while (fdchangecnt) 3451 while (fdchangecnt)
3018 { 3452 {
3019 fd_reify (EV_A); 3453 fd_reify (EV_A);
3020 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3454 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
3028 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3462 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3029 3463
3030 ev_embed_stop (EV_A_ w); 3464 ev_embed_stop (EV_A_ w);
3031 3465
3032 { 3466 {
3033 struct ev_loop *loop = w->other; 3467 EV_P = w->other;
3034 3468
3035 ev_loop_fork (EV_A); 3469 ev_loop_fork (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3470 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3037 } 3471 }
3038 3472
… …
3052{ 3486{
3053 if (expect_false (ev_is_active (w))) 3487 if (expect_false (ev_is_active (w)))
3054 return; 3488 return;
3055 3489
3056 { 3490 {
3057 struct ev_loop *loop = w->other; 3491 EV_P = w->other;
3058 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3492 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3493 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060 } 3494 }
3061 3495
3062 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
… …
3089 3523
3090 ev_io_stop (EV_A_ &w->io); 3524 ev_io_stop (EV_A_ &w->io);
3091 ev_prepare_stop (EV_A_ &w->prepare); 3525 ev_prepare_stop (EV_A_ &w->prepare);
3092 ev_fork_stop (EV_A_ &w->fork); 3526 ev_fork_stop (EV_A_ &w->fork);
3093 3527
3528 ev_stop (EV_A_ (W)w);
3529
3094 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
3095} 3531}
3096#endif 3532#endif
3097 3533
3098#if EV_FORK_ENABLE 3534#if EV_FORK_ENABLE
… …
3174 3610
3175void 3611void
3176ev_async_send (EV_P_ ev_async *w) 3612ev_async_send (EV_P_ ev_async *w)
3177{ 3613{
3178 w->sent = 1; 3614 w->sent = 1;
3179 evpipe_write (EV_A_ &gotasync); 3615 evpipe_write (EV_A_ &async_pending);
3180} 3616}
3181#endif 3617#endif
3182 3618
3183/*****************************************************************************/ 3619/*****************************************************************************/
3184 3620
… …
3224{ 3660{
3225 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3226 3662
3227 if (expect_false (!once)) 3663 if (expect_false (!once))
3228 { 3664 {
3229 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3665 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3230 return; 3666 return;
3231 } 3667 }
3232 3668
3233 once->cb = cb; 3669 once->cb = cb;
3234 once->arg = arg; 3670 once->arg = arg;
… …
3321 if (types & EV_ASYNC) 3757 if (types & EV_ASYNC)
3322 for (i = asynccnt; i--; ) 3758 for (i = asynccnt; i--; )
3323 cb (EV_A_ EV_ASYNC, asyncs [i]); 3759 cb (EV_A_ EV_ASYNC, asyncs [i]);
3324#endif 3760#endif
3325 3761
3762#if EV_PREPARE_ENABLE
3326 if (types & EV_PREPARE) 3763 if (types & EV_PREPARE)
3327 for (i = preparecnt; i--; ) 3764 for (i = preparecnt; i--; )
3328#if EV_EMBED_ENABLE 3765# if EV_EMBED_ENABLE
3329 if (ev_cb (prepares [i]) != embed_prepare_cb) 3766 if (ev_cb (prepares [i]) != embed_prepare_cb)
3330#endif 3767# endif
3331 cb (EV_A_ EV_PREPARE, prepares [i]); 3768 cb (EV_A_ EV_PREPARE, prepares [i]);
3769#endif
3332 3770
3771#if EV_CHECK_ENABLE
3333 if (types & EV_CHECK) 3772 if (types & EV_CHECK)
3334 for (i = checkcnt; i--; ) 3773 for (i = checkcnt; i--; )
3335 cb (EV_A_ EV_CHECK, checks [i]); 3774 cb (EV_A_ EV_CHECK, checks [i]);
3775#endif
3336 3776
3777#if EV_SIGNAL_ENABLE
3337 if (types & EV_SIGNAL) 3778 if (types & EV_SIGNAL)
3338 for (i = 0; i < signalmax; ++i) 3779 for (i = 0; i < EV_NSIG - 1; ++i)
3339 for (wl = signals [i].head; wl; ) 3780 for (wl = signals [i].head; wl; )
3340 { 3781 {
3341 wn = wl->next; 3782 wn = wl->next;
3342 cb (EV_A_ EV_SIGNAL, wl); 3783 cb (EV_A_ EV_SIGNAL, wl);
3343 wl = wn; 3784 wl = wn;
3344 } 3785 }
3786#endif
3345 3787
3788#if EV_CHILD_ENABLE
3346 if (types & EV_CHILD) 3789 if (types & EV_CHILD)
3347 for (i = EV_PID_HASHSIZE; i--; ) 3790 for (i = (EV_PID_HASHSIZE); i--; )
3348 for (wl = childs [i]; wl; ) 3791 for (wl = childs [i]; wl; )
3349 { 3792 {
3350 wn = wl->next; 3793 wn = wl->next;
3351 cb (EV_A_ EV_CHILD, wl); 3794 cb (EV_A_ EV_CHILD, wl);
3352 wl = wn; 3795 wl = wn;
3353 } 3796 }
3797#endif
3354/* EV_STAT 0x00001000 /* stat data changed */ 3798/* EV_STAT 0x00001000 /* stat data changed */
3355/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3799/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3356} 3800}
3357#endif 3801#endif
3358 3802

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