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Comparing libev/ev.c (file contents):
Revision 1.211 by root, Tue Feb 19 17:09:28 2008 UTC vs.
Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 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 *
… …
39 39
40#ifdef __cplusplus 40#ifdef __cplusplus
41extern "C" { 41extern "C" {
42#endif 42#endif
43 43
44/* this big block deduces configuration from config.h */
44#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
46# include EV_CONFIG_H 47# include EV_CONFIG_H
47# else 48# else
48# include "config.h" 49# include "config.h"
49# endif 50# endif
50 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
51# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
53# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
54# endif 69# endif
55# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
57# endif 72# endif
58# else 73# else
59# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
61# endif 76# endif
… …
118# else 133# else
119# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
120# endif 135# endif
121# endif 136# endif
122 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
146# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif
152# endif
153
123#endif 154#endif
124 155
125#include <math.h> 156#include <math.h>
126#include <stdlib.h> 157#include <stdlib.h>
127#include <fcntl.h> 158#include <fcntl.h>
… …
145#ifndef _WIN32 176#ifndef _WIN32
146# include <sys/time.h> 177# include <sys/time.h>
147# include <sys/wait.h> 178# include <sys/wait.h>
148# include <unistd.h> 179# include <unistd.h>
149#else 180#else
181# include <io.h>
150# define WIN32_LEAN_AND_MEAN 182# define WIN32_LEAN_AND_MEAN
151# include <windows.h> 183# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET 184# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 185# define EV_SELECT_IS_WINSOCKET 1
154# endif 186# endif
155#endif 187#endif
156 188
157/**/ 189/* this block tries to deduce configuration from header-defined symbols and defaults */
190
191/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG)
193/* use what's provided */
194#elif defined (NSIG)
195# define EV_NSIG (NSIG)
196#elif defined(_NSIG)
197# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX)
199# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX)
201# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX)
203# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else
213# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */
215# define EV_NSIG 65
216#endif
217
218#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1
221# else
222# define EV_USE_CLOCK_SYSCALL 0
223# endif
224#endif
158 225
159#ifndef EV_USE_MONOTONIC 226#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1
229# else
160# define EV_USE_MONOTONIC 0 230# define EV_USE_MONOTONIC 0
231# endif
161#endif 232#endif
162 233
163#ifndef EV_USE_REALTIME 234#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0 235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165#endif 236#endif
166 237
167#ifndef EV_USE_NANOSLEEP 238#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1
241# else
168# define EV_USE_NANOSLEEP 0 242# define EV_USE_NANOSLEEP 0
243# endif
169#endif 244#endif
170 245
171#ifndef EV_USE_SELECT 246#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1 247# define EV_USE_SELECT 1
173#endif 248#endif
… …
179# define EV_USE_POLL 1 254# define EV_USE_POLL 1
180# endif 255# endif
181#endif 256#endif
182 257
183#ifndef EV_USE_EPOLL 258#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1
261# else
184# define EV_USE_EPOLL 0 262# define EV_USE_EPOLL 0
263# endif
185#endif 264#endif
186 265
187#ifndef EV_USE_KQUEUE 266#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 267# define EV_USE_KQUEUE 0
189#endif 268#endif
… …
191#ifndef EV_USE_PORT 270#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 271# define EV_USE_PORT 0
193#endif 272#endif
194 273
195#ifndef EV_USE_INOTIFY 274#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1
277# else
196# define EV_USE_INOTIFY 0 278# define EV_USE_INOTIFY 0
279# endif
197#endif 280#endif
198 281
199#ifndef EV_PID_HASHSIZE 282#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 283# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1 284# define EV_PID_HASHSIZE 1
… …
210# else 293# else
211# define EV_INOTIFY_HASHSIZE 16 294# define EV_INOTIFY_HASHSIZE 16
212# endif 295# endif
213#endif 296#endif
214 297
215/**/ 298#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1
301# else
302# define EV_USE_EVENTFD 0
303# endif
304#endif
305
306#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1
309# else
310# define EV_USE_SIGNALFD 0
311# endif
312#endif
313
314#if 0 /* debugging */
315# define EV_VERIFY 3
316# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1
318#endif
319
320#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL
322#endif
323
324#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL
326#endif
327
328#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL
330#endif
331
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h>
336# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1
340# else
341# undef EV_USE_CLOCK_SYSCALL
342# define EV_USE_CLOCK_SYSCALL 0
343# endif
344#endif
345
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */
216 347
217#ifndef CLOCK_MONOTONIC 348#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 349# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 350# define EV_USE_MONOTONIC 0
220#endif 351#endif
… …
234# include <sys/select.h> 365# include <sys/select.h>
235# endif 366# endif
236#endif 367#endif
237 368
238#if EV_USE_INOTIFY 369#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h>
239# include <sys/inotify.h> 372# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0
377# endif
240#endif 378#endif
241 379
242#if EV_SELECT_IS_WINSOCKET 380#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 381# include <winsock.h>
244#endif 382#endif
245 383
384#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h>
387# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK
389# endif
390# ifndef EFD_CLOEXEC
391# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC
393# else
394# define EFD_CLOEXEC 02000000
395# endif
396# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif
405
406#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h>
409# ifndef SFD_NONBLOCK
410# define SFD_NONBLOCK O_NONBLOCK
411# endif
412# ifndef SFD_CLOEXEC
413# ifdef O_CLOEXEC
414# define SFD_CLOEXEC O_CLOEXEC
415# else
416# define SFD_CLOEXEC 02000000
417# endif
418# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags);
423
424struct signalfd_siginfo
425{
426 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)];
428};
429# ifdef __cplusplus
430}
431# endif
432#endif
433
434
246/**/ 435/**/
436
437#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
439#else
440# define EV_FREQUENT_CHECK do { } while (0)
441#endif
247 442
248/* 443/*
249 * This is used to avoid floating point rounding problems. 444 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics 445 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding 446 * to ensure progress, time-wise, even when rounding
… …
255 */ 450 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257 452
258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261 455
262#if __GNUC__ >= 4 456#if __GNUC__ >= 4
263# define expect(expr,value) __builtin_expect ((expr),(value)) 457# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline)) 458# define noinline __attribute__ ((noinline))
265#else 459#else
266# define expect(expr,value) (expr) 460# define expect(expr,value) (expr)
267# define noinline 461# define noinline
268# if __STDC_VERSION__ < 199901L 462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
269# define inline 463# define inline
270# endif 464# endif
271#endif 465#endif
272 466
273#define expect_false(expr) expect ((expr) != 0, 0) 467#define expect_false(expr) expect ((expr) != 0, 0)
… …
278# define inline_speed static noinline 472# define inline_speed static noinline
279#else 473#else
280# define inline_speed static inline 474# define inline_speed static inline
281#endif 475#endif
282 476
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478
479#if EV_MINPRI == EV_MAXPRI
480# define ABSPRI(w) (((W)w), 0)
481#else
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 482# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
483#endif
285 484
286#define EMPTY /* required for microsofts broken pseudo-c compiler */ 485#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */ 486#define EMPTY2(a,b) /* used to suppress some warnings */
288 487
289typedef ev_watcher *W; 488typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 489typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 490typedef ev_watcher_time *WT;
292 491
293#if EV_USE_MONOTONIC 492#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at
494
495#if EV_USE_REALTIME
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 496/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */ 497/* giving it a reasonably high chance of working on typical architetcures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif
500
501#if EV_USE_MONOTONIC
296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
503#endif
504
505#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif
508#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
510#endif
511#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd)
297#endif 513#endif
298 514
299#ifdef _WIN32 515#ifdef _WIN32
300# include "ev_win32.c" 516# include "ev_win32.c"
301#endif 517#endif
… …
309{ 525{
310 syserr_cb = cb; 526 syserr_cb = cb;
311} 527}
312 528
313static void noinline 529static void noinline
314syserr (const char *msg) 530ev_syserr (const char *msg)
315{ 531{
316 if (!msg) 532 if (!msg)
317 msg = "(libev) system error"; 533 msg = "(libev) system error";
318 534
319 if (syserr_cb) 535 if (syserr_cb)
… …
323 perror (msg); 539 perror (msg);
324 abort (); 540 abort ();
325 } 541 }
326} 542}
327 543
544static void *
545ev_realloc_emul (void *ptr, long size)
546{
547 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and
549 * the single unix specification, so work around them here.
550 */
551
552 if (size)
553 return realloc (ptr, size);
554
555 free (ptr);
556 return 0;
557}
558
328static void *(*alloc)(void *ptr, long size); 559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 560
330void 561void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 562ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 563{
333 alloc = cb; 564 alloc = cb;
334} 565}
335 566
336inline_speed void * 567inline_speed void *
337ev_realloc (void *ptr, long size) 568ev_realloc (void *ptr, long size)
338{ 569{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 570 ptr = alloc (ptr, size);
340 571
341 if (!ptr && size) 572 if (!ptr && size)
342 { 573 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort (); 575 abort ();
… …
350#define ev_malloc(size) ev_realloc (0, (size)) 581#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0) 582#define ev_free(ptr) ev_realloc ((ptr), 0)
352 583
353/*****************************************************************************/ 584/*****************************************************************************/
354 585
586/* set in reify when reification needed */
587#define EV_ANFD_REIFY 1
588
589/* file descriptor info structure */
355typedef struct 590typedef struct
356{ 591{
357 WL head; 592 WL head;
358 unsigned char events; 593 unsigned char events; /* the events watched for */
594 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359 unsigned char reify; 596 unsigned char unused;
597#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif
360#if EV_SELECT_IS_WINSOCKET 600#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle; 601 SOCKET handle;
362#endif 602#endif
363} ANFD; 603} ANFD;
364 604
605/* stores the pending event set for a given watcher */
365typedef struct 606typedef struct
366{ 607{
367 W w; 608 W w;
368 int events; 609 int events; /* the pending event set for the given watcher */
369} ANPENDING; 610} ANPENDING;
370 611
371#if EV_USE_INOTIFY 612#if EV_USE_INOTIFY
613/* hash table entry per inotify-id */
372typedef struct 614typedef struct
373{ 615{
374 WL head; 616 WL head;
375} ANFS; 617} ANFS;
618#endif
619
620/* Heap Entry */
621#if EV_HEAP_CACHE_AT
622 /* a heap element */
623 typedef struct {
624 ev_tstamp at;
625 WT w;
626 } ANHE;
627
628 #define ANHE_w(he) (he).w /* access watcher, read-write */
629 #define ANHE_at(he) (he).at /* access cached at, read-only */
630 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
631#else
632 /* a heap element */
633 typedef WT ANHE;
634
635 #define ANHE_w(he) (he)
636 #define ANHE_at(he) (he)->at
637 #define ANHE_at_cache(he)
376#endif 638#endif
377 639
378#if EV_MULTIPLICITY 640#if EV_MULTIPLICITY
379 641
380 struct ev_loop 642 struct ev_loop
… …
399 661
400 static int ev_default_loop_ptr; 662 static int ev_default_loop_ptr;
401 663
402#endif 664#endif
403 665
666#if EV_MINIMAL < 2
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else
671# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif
675
676#define EVUNLOOP_RECURSE 0x80
677
404/*****************************************************************************/ 678/*****************************************************************************/
405 679
680#ifndef EV_HAVE_EV_TIME
406ev_tstamp 681ev_tstamp
407ev_time (void) 682ev_time (void)
408{ 683{
409#if EV_USE_REALTIME 684#if EV_USE_REALTIME
685 if (expect_true (have_realtime))
686 {
410 struct timespec ts; 687 struct timespec ts;
411 clock_gettime (CLOCK_REALTIME, &ts); 688 clock_gettime (CLOCK_REALTIME, &ts);
412 return ts.tv_sec + ts.tv_nsec * 1e-9; 689 return ts.tv_sec + ts.tv_nsec * 1e-9;
413#else 690 }
691#endif
692
414 struct timeval tv; 693 struct timeval tv;
415 gettimeofday (&tv, 0); 694 gettimeofday (&tv, 0);
416 return tv.tv_sec + tv.tv_usec * 1e-6; 695 return tv.tv_sec + tv.tv_usec * 1e-6;
417#endif
418} 696}
697#endif
419 698
420ev_tstamp inline_size 699inline_size ev_tstamp
421get_clock (void) 700get_clock (void)
422{ 701{
423#if EV_USE_MONOTONIC 702#if EV_USE_MONOTONIC
424 if (expect_true (have_monotonic)) 703 if (expect_true (have_monotonic))
425 { 704 {
… …
451 ts.tv_sec = (time_t)delay; 730 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453 732
454 nanosleep (&ts, 0); 733 nanosleep (&ts, 0);
455#elif defined(_WIN32) 734#elif defined(_WIN32)
456 Sleep (delay * 1e3); 735 Sleep ((unsigned long)(delay * 1e3));
457#else 736#else
458 struct timeval tv; 737 struct timeval tv;
459 738
460 tv.tv_sec = (time_t)delay; 739 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462 741
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */
463 select (0, 0, 0, 0, &tv); 745 select (0, 0, 0, 0, &tv);
464#endif 746#endif
465 } 747 }
466} 748}
467 749
468/*****************************************************************************/ 750/*****************************************************************************/
469 751
470int inline_size 752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753
754/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */
756inline_size int
471array_nextsize (int elem, int cur, int cnt) 757array_nextsize (int elem, int cur, int cnt)
472{ 758{
473 int ncur = cur + 1; 759 int ncur = cur + 1;
474 760
475 do 761 do
476 ncur <<= 1; 762 ncur <<= 1;
477 while (cnt > ncur); 763 while (cnt > ncur);
478 764
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 767 {
482 ncur *= elem; 768 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 770 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 771 ncur /= elem;
486 } 772 }
487 773
488 return ncur; 774 return ncur;
… …
492array_realloc (int elem, void *base, int *cur, int cnt) 778array_realloc (int elem, void *base, int *cur, int cnt)
493{ 779{
494 *cur = array_nextsize (elem, *cur, cnt); 780 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur); 781 return ev_realloc (base, elem * *cur);
496} 782}
783
784#define array_init_zero(base,count) \
785 memset ((void *)(base), 0, sizeof (*(base)) * (count))
497 786
498#define array_needsize(type,base,cur,cnt,init) \ 787#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \ 788 if (expect_false ((cnt) > (cur))) \
500 { \ 789 { \
501 int ocur_ = (cur); \ 790 int ocur_ = (cur); \
… …
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 802 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 } 803 }
515#endif 804#endif
516 805
517#define array_free(stem, idx) \ 806#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 807 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519 808
520/*****************************************************************************/ 809/*****************************************************************************/
810
811/* dummy callback for pending events */
812static void noinline
813pendingcb (EV_P_ ev_prepare *w, int revents)
814{
815}
521 816
522void noinline 817void noinline
523ev_feed_event (EV_P_ void *w, int revents) 818ev_feed_event (EV_P_ void *w, int revents)
524{ 819{
525 W w_ = (W)w; 820 W w_ = (W)w;
… …
534 pendings [pri][w_->pending - 1].w = w_; 829 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents; 830 pendings [pri][w_->pending - 1].events = revents;
536 } 831 }
537} 832}
538 833
539void inline_speed 834inline_speed void
835feed_reverse (EV_P_ W w)
836{
837 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
838 rfeeds [rfeedcnt++] = w;
839}
840
841inline_size void
842feed_reverse_done (EV_P_ int revents)
843{
844 do
845 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
846 while (rfeedcnt);
847}
848
849inline_speed void
540queue_events (EV_P_ W *events, int eventcnt, int type) 850queue_events (EV_P_ W *events, int eventcnt, int type)
541{ 851{
542 int i; 852 int i;
543 853
544 for (i = 0; i < eventcnt; ++i) 854 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type); 855 ev_feed_event (EV_A_ events [i], type);
546} 856}
547 857
548/*****************************************************************************/ 858/*****************************************************************************/
549 859
550void inline_size 860inline_speed void
551anfds_init (ANFD *base, int count)
552{
553 while (count--)
554 {
555 base->head = 0;
556 base->events = EV_NONE;
557 base->reify = 0;
558
559 ++base;
560 }
561}
562
563void inline_speed
564fd_event (EV_P_ int fd, int revents) 861fd_event_nc (EV_P_ int fd, int revents)
565{ 862{
566 ANFD *anfd = anfds + fd; 863 ANFD *anfd = anfds + fd;
567 ev_io *w; 864 ev_io *w;
568 865
569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
573 if (ev) 870 if (ev)
574 ev_feed_event (EV_A_ (W)w, ev); 871 ev_feed_event (EV_A_ (W)w, ev);
575 } 872 }
576} 873}
577 874
875/* do not submit kernel events for fds that have reify set */
876/* because that means they changed while we were polling for new events */
877inline_speed void
878fd_event (EV_P_ int fd, int revents)
879{
880 ANFD *anfd = anfds + fd;
881
882 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents);
884}
885
578void 886void
579ev_feed_fd_event (EV_P_ int fd, int revents) 887ev_feed_fd_event (EV_P_ int fd, int revents)
580{ 888{
581 if (fd >= 0 && fd < anfdmax) 889 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents); 890 fd_event_nc (EV_A_ fd, revents);
583} 891}
584 892
585void inline_size 893/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */
895inline_size void
586fd_reify (EV_P) 896fd_reify (EV_P)
587{ 897{
588 int i; 898 int i;
589 899
590 for (i = 0; i < fdchangecnt; ++i) 900 for (i = 0; i < fdchangecnt; ++i)
… …
599 events |= (unsigned char)w->events; 909 events |= (unsigned char)w->events;
600 910
601#if EV_SELECT_IS_WINSOCKET 911#if EV_SELECT_IS_WINSOCKET
602 if (events) 912 if (events)
603 { 913 {
604 unsigned long argp; 914 unsigned long arg;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
608 anfd->handle = _get_osfhandle (fd);
609 #endif
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
611 } 917 }
612#endif 918#endif
613 919
614 { 920 {
615 unsigned char o_events = anfd->events; 921 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify; 922 unsigned char o_reify = anfd->reify;
617 923
618 anfd->reify = 0; 924 anfd->reify = 0;
619 anfd->events = events; 925 anfd->events = events;
620 926
621 if (o_events != events || o_reify & EV_IOFDSET) 927 if (o_events != events || o_reify & EV__IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events); 928 backend_modify (EV_A_ fd, o_events, events);
623 } 929 }
624 } 930 }
625 931
626 fdchangecnt = 0; 932 fdchangecnt = 0;
627} 933}
628 934
629void inline_size 935/* something about the given fd changed */
936inline_size void
630fd_change (EV_P_ int fd, int flags) 937fd_change (EV_P_ int fd, int flags)
631{ 938{
632 unsigned char reify = anfds [fd].reify; 939 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags; 940 anfds [fd].reify |= flags;
634 941
… …
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 945 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd; 946 fdchanges [fdchangecnt - 1] = fd;
640 } 947 }
641} 948}
642 949
643void inline_speed 950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void
644fd_kill (EV_P_ int fd) 952fd_kill (EV_P_ int fd)
645{ 953{
646 ev_io *w; 954 ev_io *w;
647 955
648 while ((w = (ev_io *)anfds [fd].head)) 956 while ((w = (ev_io *)anfds [fd].head))
… …
650 ev_io_stop (EV_A_ w); 958 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 } 960 }
653} 961}
654 962
655int inline_size 963/* check whether the given fd is atcually valid, for error recovery */
964inline_size int
656fd_valid (int fd) 965fd_valid (int fd)
657{ 966{
658#ifdef _WIN32 967#ifdef _WIN32
659 return _get_osfhandle (fd) != -1; 968 return _get_osfhandle (fd) != -1;
660#else 969#else
… …
668{ 977{
669 int fd; 978 int fd;
670 979
671 for (fd = 0; fd < anfdmax; ++fd) 980 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events) 981 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF) 982 if (!fd_valid (fd) && errno == EBADF)
674 fd_kill (EV_A_ fd); 983 fd_kill (EV_A_ fd);
675} 984}
676 985
677/* called on ENOMEM in select/poll to kill some fds and retry */ 986/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline 987static void noinline
… …
682 991
683 for (fd = anfdmax; fd--; ) 992 for (fd = anfdmax; fd--; )
684 if (anfds [fd].events) 993 if (anfds [fd].events)
685 { 994 {
686 fd_kill (EV_A_ fd); 995 fd_kill (EV_A_ fd);
687 return; 996 break;
688 } 997 }
689} 998}
690 999
691/* usually called after fork if backend needs to re-arm all fds from scratch */ 1000/* usually called after fork if backend needs to re-arm all fds from scratch */
692static void noinline 1001static void noinline
… …
696 1005
697 for (fd = 0; fd < anfdmax; ++fd) 1006 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events) 1007 if (anfds [fd].events)
699 { 1008 {
700 anfds [fd].events = 0; 1009 anfds [fd].events = 0;
1010 anfds [fd].emask = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702 } 1012 }
703} 1013}
704 1014
705/*****************************************************************************/ 1015/*****************************************************************************/
706 1016
707void inline_speed 1017/*
708upheap (WT *heap, int k) 1018 * the heap functions want a real array index. array index 0 uis guaranteed to not
709{ 1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
710 WT w = heap [k]; 1020 * the branching factor of the d-tree.
1021 */
711 1022
712 while (k) 1023/*
713 { 1024 * at the moment we allow libev the luxury of two heaps,
714 int p = (k - 1) >> 1; 1025 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1026 * which is more cache-efficient.
1027 * the difference is about 5% with 50000+ watchers.
1028 */
1029#if EV_USE_4HEAP
715 1030
716 if (heap [p]->at <= w->at) 1031#define DHEAP 4
1032#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1033#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1034#define UPHEAP_DONE(p,k) ((p) == (k))
1035
1036/* away from the root */
1037inline_speed void
1038downheap (ANHE *heap, int N, int k)
1039{
1040 ANHE he = heap [k];
1041 ANHE *E = heap + N + HEAP0;
1042
1043 for (;;)
1044 {
1045 ev_tstamp minat;
1046 ANHE *minpos;
1047 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1048
1049 /* find minimum child */
1050 if (expect_true (pos + DHEAP - 1 < E))
1051 {
1052 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1053 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1054 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1055 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1056 }
1057 else if (pos < E)
1058 {
1059 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1060 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1061 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1062 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1063 }
1064 else
717 break; 1065 break;
718 1066
1067 if (ANHE_at (he) <= minat)
1068 break;
1069
1070 heap [k] = *minpos;
1071 ev_active (ANHE_w (*minpos)) = k;
1072
1073 k = minpos - heap;
1074 }
1075
1076 heap [k] = he;
1077 ev_active (ANHE_w (he)) = k;
1078}
1079
1080#else /* 4HEAP */
1081
1082#define HEAP0 1
1083#define HPARENT(k) ((k) >> 1)
1084#define UPHEAP_DONE(p,k) (!(p))
1085
1086/* away from the root */
1087inline_speed void
1088downheap (ANHE *heap, int N, int k)
1089{
1090 ANHE he = heap [k];
1091
1092 for (;;)
1093 {
1094 int c = k << 1;
1095
1096 if (c >= N + HEAP0)
1097 break;
1098
1099 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1100 ? 1 : 0;
1101
1102 if (ANHE_at (he) <= ANHE_at (heap [c]))
1103 break;
1104
1105 heap [k] = heap [c];
1106 ev_active (ANHE_w (heap [k])) = k;
1107
1108 k = c;
1109 }
1110
1111 heap [k] = he;
1112 ev_active (ANHE_w (he)) = k;
1113}
1114#endif
1115
1116/* towards the root */
1117inline_speed void
1118upheap (ANHE *heap, int k)
1119{
1120 ANHE he = heap [k];
1121
1122 for (;;)
1123 {
1124 int p = HPARENT (k);
1125
1126 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1127 break;
1128
719 heap [k] = heap [p]; 1129 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1; 1130 ev_active (ANHE_w (heap [k])) = k;
721 k = p; 1131 k = p;
722 } 1132 }
723 1133
724 heap [k] = w; 1134 heap [k] = he;
725 ((W)heap [k])->active = k + 1; 1135 ev_active (ANHE_w (he)) = k;
726} 1136}
727 1137
728void inline_speed 1138/* move an element suitably so it is in a correct place */
729downheap (WT *heap, int N, int k) 1139inline_size void
730{
731 WT w = heap [k];
732
733 for (;;)
734 {
735 int c = (k << 1) + 1;
736
737 if (c >= N)
738 break;
739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
746 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1;
748
749 k = c;
750 }
751
752 heap [k] = w;
753 ((W)heap [k])->active = k + 1;
754}
755
756void inline_size
757adjustheap (WT *heap, int N, int k) 1140adjustheap (ANHE *heap, int N, int k)
758{ 1141{
1142 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
759 upheap (heap, k); 1143 upheap (heap, k);
1144 else
760 downheap (heap, N, k); 1145 downheap (heap, N, k);
1146}
1147
1148/* rebuild the heap: this function is used only once and executed rarely */
1149inline_size void
1150reheap (ANHE *heap, int N)
1151{
1152 int i;
1153
1154 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1155 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1156 for (i = 0; i < N; ++i)
1157 upheap (heap, i + HEAP0);
761} 1158}
762 1159
763/*****************************************************************************/ 1160/*****************************************************************************/
764 1161
1162/* associate signal watchers to a signal signal */
765typedef struct 1163typedef struct
766{ 1164{
1165 EV_ATOMIC_T pending;
1166#if EV_MULTIPLICITY
1167 EV_P;
1168#endif
767 WL head; 1169 WL head;
768 EV_ATOMIC_T gotsig;
769} ANSIG; 1170} ANSIG;
770 1171
771static ANSIG *signals; 1172static ANSIG signals [EV_NSIG - 1];
772static int signalmax;
773
774static EV_ATOMIC_T gotsig;
775
776void inline_size
777signals_init (ANSIG *base, int count)
778{
779 while (count--)
780 {
781 base->head = 0;
782 base->gotsig = 0;
783
784 ++base;
785 }
786}
787 1173
788/*****************************************************************************/ 1174/*****************************************************************************/
789 1175
790void inline_speed 1176/* used to prepare libev internal fd's */
1177/* this is not fork-safe */
1178inline_speed void
791fd_intern (int fd) 1179fd_intern (int fd)
792{ 1180{
793#ifdef _WIN32 1181#ifdef _WIN32
794 int arg = 1; 1182 unsigned long arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else 1184#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC); 1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK); 1186 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif 1187#endif
800} 1188}
801 1189
802static void noinline 1190static void noinline
803evpipe_init (EV_P) 1191evpipe_init (EV_P)
804{ 1192{
805 if (!ev_is_active (&pipeev)) 1193 if (!ev_is_active (&pipe_w))
806 { 1194 {
1195#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1201 {
1202 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ);
1205 }
1206 else
1207#endif
1208 {
807 while (pipe (evpipe)) 1209 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe"); 1210 ev_syserr ("(libev) error creating signal/async pipe");
809 1211
810 fd_intern (evpipe [0]); 1212 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]); 1213 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ); 1214 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1215 }
1216
814 ev_io_start (EV_A_ &pipeev); 1217 ev_io_start (EV_A_ &pipe_w);
815 ev_unref (EV_A); /* watcher should not keep loop alive */ 1218 ev_unref (EV_A); /* watcher should not keep loop alive */
816
817 /* in case we received the signal before we had the chance of installing a handler */
818 ev_feed_event (EV_A_ &pipeev, 0);
819 }
820}
821
822void inline_size
823evpipe_write (EV_P_ int sig, int async)
824{
825 if (!(gotasync || gotsig))
826 { 1219 }
1220}
1221
1222inline_size void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{
1225 if (!*flag)
1226 {
827 int old_errno = errno; /* save errno becaue write might clobber it */ 1227 int old_errno = errno; /* save errno because write might clobber it */
828 1228
829 if (sig) gotsig = 1; 1229 *flag = 1;
830 if (async) gotasync = 1;
831 1230
1231#if EV_USE_EVENTFD
1232 if (evfd >= 0)
1233 {
1234 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t));
1236 }
1237 else
1238#endif
832 write (evpipe [1], &old_errno, 1); 1239 write (evpipe [1], &old_errno, 1);
833 1240
834 errno = old_errno; 1241 errno = old_errno;
835 } 1242 }
836} 1243}
837 1244
1245/* called whenever the libev signal pipe */
1246/* got some events (signal, async) */
838static void 1247static void
839pipecb (EV_P_ ev_io *iow, int revents) 1248pipecb (EV_P_ ev_io *iow, int revents)
840{ 1249{
1250 int i;
1251
1252#if EV_USE_EVENTFD
1253 if (evfd >= 0)
841 { 1254 {
842 int dummy; 1255 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t));
1257 }
1258 else
1259#endif
1260 {
1261 char dummy;
843 read (evpipe [0], &dummy, 1); 1262 read (evpipe [0], &dummy, 1);
844 } 1263 }
845 1264
846 if (gotsig && ev_is_default_loop (EV_A)) 1265 if (sig_pending)
847 { 1266 {
848 int signum; 1267 sig_pending = 0;
849 gotsig = 0;
850 1268
851 for (signum = signalmax; signum--; ) 1269 for (i = EV_NSIG - 1; i--; )
852 if (signals [signum].gotsig) 1270 if (expect_false (signals [i].pending))
853 ev_feed_signal_event (EV_A_ signum + 1); 1271 ev_feed_signal_event (EV_A_ i + 1);
854 } 1272 }
855 1273
856#if EV_ASYNC_ENABLE 1274#if EV_ASYNC_ENABLE
857 if (gotasync) 1275 if (async_pending)
858 { 1276 {
859 int i; 1277 async_pending = 0;
860 gotasync = 0;
861 1278
862 for (i = asynccnt; i--; ) 1279 for (i = asynccnt; i--; )
863 if (asyncs [i]->sent) 1280 if (asyncs [i]->sent)
864 { 1281 {
865 asyncs [i]->sent = 0; 1282 asyncs [i]->sent = 0;
… …
870} 1287}
871 1288
872/*****************************************************************************/ 1289/*****************************************************************************/
873 1290
874static void 1291static void
875sighandler (int signum) 1292ev_sighandler (int signum)
876{ 1293{
877#if EV_MULTIPLICITY 1294#if EV_MULTIPLICITY
878 struct ev_loop *loop = &default_loop_struct; 1295 EV_P = signals [signum - 1].loop;
879#endif 1296#endif
880 1297
881#if _WIN32 1298#if _WIN32
882 signal (signum, sighandler); 1299 signal (signum, ev_sighandler);
883#endif 1300#endif
884 1301
885 signals [signum - 1].gotsig = 1; 1302 signals [signum - 1].pending = 1;
886 evpipe_write (EV_A_ 1, 0); 1303 evpipe_write (EV_A_ &sig_pending);
887} 1304}
888 1305
889void noinline 1306void noinline
890ev_feed_signal_event (EV_P_ int signum) 1307ev_feed_signal_event (EV_P_ int signum)
891{ 1308{
892 WL w; 1309 WL w;
893 1310
1311 if (expect_false (signum <= 0 || signum > EV_NSIG))
1312 return;
1313
1314 --signum;
1315
894#if EV_MULTIPLICITY 1316#if EV_MULTIPLICITY
895 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1317 /* it is permissible to try to feed a signal to the wrong loop */
896#endif 1318 /* or, likely more useful, feeding a signal nobody is waiting for */
897 1319
898 --signum; 1320 if (expect_false (signals [signum].loop != EV_A))
899
900 if (signum < 0 || signum >= signalmax)
901 return; 1321 return;
1322#endif
902 1323
903 signals [signum].gotsig = 0; 1324 signals [signum].pending = 0;
904 1325
905 for (w = signals [signum].head; w; w = w->next) 1326 for (w = signals [signum].head; w; w = w->next)
906 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
907} 1328}
908 1329
1330#if EV_USE_SIGNALFD
1331static void
1332sigfdcb (EV_P_ ev_io *iow, int revents)
1333{
1334 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1335
1336 for (;;)
1337 {
1338 ssize_t res = read (sigfd, si, sizeof (si));
1339
1340 /* not ISO-C, as res might be -1, but works with SuS */
1341 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1342 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1343
1344 if (res < (ssize_t)sizeof (si))
1345 break;
1346 }
1347}
1348#endif
1349
909/*****************************************************************************/ 1350/*****************************************************************************/
910 1351
911static WL childs [EV_PID_HASHSIZE]; 1352static WL childs [EV_PID_HASHSIZE];
912 1353
913#ifndef _WIN32 1354#ifndef _WIN32
… …
916 1357
917#ifndef WIFCONTINUED 1358#ifndef WIFCONTINUED
918# define WIFCONTINUED(status) 0 1359# define WIFCONTINUED(status) 0
919#endif 1360#endif
920 1361
921void inline_speed 1362/* handle a single child status event */
1363inline_speed void
922child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1364child_reap (EV_P_ int chain, int pid, int status)
923{ 1365{
924 ev_child *w; 1366 ev_child *w;
925 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
926 1368
927 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
928 { 1370 {
929 if ((w->pid == pid || !w->pid) 1371 if ((w->pid == pid || !w->pid)
930 && (!traced || (w->flags & 1))) 1372 && (!traced || (w->flags & 1)))
931 { 1373 {
932 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
933 w->rpid = pid; 1375 w->rpid = pid;
934 w->rstatus = status; 1376 w->rstatus = status;
935 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1377 ev_feed_event (EV_A_ (W)w, EV_CHILD);
936 } 1378 }
937 } 1379 }
… …
939 1381
940#ifndef WCONTINUED 1382#ifndef WCONTINUED
941# define WCONTINUED 0 1383# define WCONTINUED 0
942#endif 1384#endif
943 1385
1386/* called on sigchld etc., calls waitpid */
944static void 1387static void
945childcb (EV_P_ ev_signal *sw, int revents) 1388childcb (EV_P_ ev_signal *sw, int revents)
946{ 1389{
947 int pid, status; 1390 int pid, status;
948 1391
… …
951 if (!WCONTINUED 1394 if (!WCONTINUED
952 || errno != EINVAL 1395 || errno != EINVAL
953 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1396 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
954 return; 1397 return;
955 1398
956 /* make sure we are called again until all childs have been reaped */ 1399 /* make sure we are called again until all children have been reaped */
957 /* we need to do it this way so that the callback gets called before we continue */ 1400 /* we need to do it this way so that the callback gets called before we continue */
958 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
959 1402
960 child_reap (EV_A_ sw, pid, pid, status); 1403 child_reap (EV_A_ pid, pid, status);
961 if (EV_PID_HASHSIZE > 1) 1404 if (EV_PID_HASHSIZE > 1)
962 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
963} 1406}
964 1407
965#endif 1408#endif
966 1409
967/*****************************************************************************/ 1410/*****************************************************************************/
… …
1029 /* kqueue is borked on everything but netbsd apparently */ 1472 /* kqueue is borked on everything but netbsd apparently */
1030 /* it usually doesn't work correctly on anything but sockets and pipes */ 1473 /* it usually doesn't work correctly on anything but sockets and pipes */
1031 flags &= ~EVBACKEND_KQUEUE; 1474 flags &= ~EVBACKEND_KQUEUE;
1032#endif 1475#endif
1033#ifdef __APPLE__ 1476#ifdef __APPLE__
1034 // flags &= ~EVBACKEND_KQUEUE; for documentation 1477 /* only select works correctly on that "unix-certified" platform */
1035 flags &= ~EVBACKEND_POLL; 1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1036#endif 1480#endif
1037 1481
1038 return flags; 1482 return flags;
1039} 1483}
1040 1484
… …
1054ev_backend (EV_P) 1498ev_backend (EV_P)
1055{ 1499{
1056 return backend; 1500 return backend;
1057} 1501}
1058 1502
1503#if EV_MINIMAL < 2
1059unsigned int 1504unsigned int
1060ev_loop_count (EV_P) 1505ev_loop_count (EV_P)
1061{ 1506{
1062 return loop_count; 1507 return loop_count;
1063} 1508}
1064 1509
1510unsigned int
1511ev_loop_depth (EV_P)
1512{
1513 return loop_depth;
1514}
1515
1065void 1516void
1066ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1067{ 1518{
1068 io_blocktime = interval; 1519 io_blocktime = interval;
1069} 1520}
… …
1072ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1073{ 1524{
1074 timeout_blocktime = interval; 1525 timeout_blocktime = interval;
1075} 1526}
1076 1527
1528void
1529ev_set_userdata (EV_P_ void *data)
1530{
1531 userdata = data;
1532}
1533
1534void *
1535ev_userdata (EV_P)
1536{
1537 return userdata;
1538}
1539
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1541{
1542 invoke_cb = invoke_pending_cb;
1543}
1544
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1546{
1547 release_cb = release;
1548 acquire_cb = acquire;
1549}
1550#endif
1551
1552/* initialise a loop structure, must be zero-initialised */
1077static void noinline 1553static void noinline
1078loop_init (EV_P_ unsigned int flags) 1554loop_init (EV_P_ unsigned int flags)
1079{ 1555{
1080 if (!backend) 1556 if (!backend)
1081 { 1557 {
1558#if EV_USE_REALTIME
1559 if (!have_realtime)
1560 {
1561 struct timespec ts;
1562
1563 if (!clock_gettime (CLOCK_REALTIME, &ts))
1564 have_realtime = 1;
1565 }
1566#endif
1567
1082#if EV_USE_MONOTONIC 1568#if EV_USE_MONOTONIC
1569 if (!have_monotonic)
1083 { 1570 {
1084 struct timespec ts; 1571 struct timespec ts;
1572
1085 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1573 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1086 have_monotonic = 1; 1574 have_monotonic = 1;
1087 } 1575 }
1088#endif 1576#endif
1577
1578 /* pid check not overridable via env */
1579#ifndef _WIN32
1580 if (flags & EVFLAG_FORKCHECK)
1581 curpid = getpid ();
1582#endif
1583
1584 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS"));
1089 1588
1090 ev_rt_now = ev_time (); 1589 ev_rt_now = ev_time ();
1091 mn_now = get_clock (); 1590 mn_now = get_clock ();
1092 now_floor = mn_now; 1591 now_floor = mn_now;
1093 rtmn_diff = ev_rt_now - mn_now; 1592 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2
1594 invoke_cb = ev_invoke_pending;
1595#endif
1094 1596
1095 io_blocktime = 0.; 1597 io_blocktime = 0.;
1096 timeout_blocktime = 0.; 1598 timeout_blocktime = 0.;
1097 backend = 0; 1599 backend = 0;
1098 backend_fd = -1; 1600 backend_fd = -1;
1099 gotasync = 0; 1601 sig_pending = 0;
1602#if EV_ASYNC_ENABLE
1603 async_pending = 0;
1604#endif
1100#if EV_USE_INOTIFY 1605#if EV_USE_INOTIFY
1101 fs_fd = -2; 1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1102#endif 1607#endif
1103 1608#if EV_USE_SIGNALFD
1104 /* pid check not overridable via env */ 1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1105#ifndef _WIN32
1106 if (flags & EVFLAG_FORKCHECK)
1107 curpid = getpid ();
1108#endif 1610#endif
1109 1611
1110 if (!(flags & EVFLAG_NOENV)
1111 && !enable_secure ()
1112 && getenv ("LIBEV_FLAGS"))
1113 flags = atoi (getenv ("LIBEV_FLAGS"));
1114
1115 if (!(flags & 0x0000ffffUL)) 1612 if (!(flags & 0x0000ffffU))
1116 flags |= ev_recommended_backends (); 1613 flags |= ev_recommended_backends ();
1117 1614
1118#if EV_USE_PORT 1615#if EV_USE_PORT
1119 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1120#endif 1617#endif
… …
1129#endif 1626#endif
1130#if EV_USE_SELECT 1627#if EV_USE_SELECT
1131 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1132#endif 1629#endif
1133 1630
1631 ev_prepare_init (&pending_w, pendingcb);
1632
1134 ev_init (&pipeev, pipecb); 1633 ev_init (&pipe_w, pipecb);
1135 ev_set_priority (&pipeev, EV_MAXPRI); 1634 ev_set_priority (&pipe_w, EV_MAXPRI);
1136 } 1635 }
1137} 1636}
1138 1637
1638/* free up a loop structure */
1139static void noinline 1639static void noinline
1140loop_destroy (EV_P) 1640loop_destroy (EV_P)
1141{ 1641{
1142 int i; 1642 int i;
1143 1643
1144 if (ev_is_active (&pipeev)) 1644 if (ev_is_active (&pipe_w))
1145 { 1645 {
1146 ev_ref (EV_A); /* signal watcher */ 1646 /*ev_ref (EV_A);*/
1147 ev_io_stop (EV_A_ &pipeev); 1647 /*ev_io_stop (EV_A_ &pipe_w);*/
1148 1648
1149 close (evpipe [0]); evpipe [0] = 0; 1649#if EV_USE_EVENTFD
1150 close (evpipe [1]); evpipe [1] = 0; 1650 if (evfd >= 0)
1651 close (evfd);
1652#endif
1653
1654 if (evpipe [0] >= 0)
1655 {
1656 EV_WIN32_CLOSE_FD (evpipe [0]);
1657 EV_WIN32_CLOSE_FD (evpipe [1]);
1658 }
1151 } 1659 }
1660
1661#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w))
1663 close (sigfd);
1664#endif
1152 1665
1153#if EV_USE_INOTIFY 1666#if EV_USE_INOTIFY
1154 if (fs_fd >= 0) 1667 if (fs_fd >= 0)
1155 close (fs_fd); 1668 close (fs_fd);
1156#endif 1669#endif
… …
1180#if EV_IDLE_ENABLE 1693#if EV_IDLE_ENABLE
1181 array_free (idle, [i]); 1694 array_free (idle, [i]);
1182#endif 1695#endif
1183 } 1696 }
1184 1697
1185 ev_free (anfds); anfdmax = 0; 1698 ev_free (anfds); anfds = 0; anfdmax = 0;
1186 1699
1187 /* have to use the microsoft-never-gets-it-right macro */ 1700 /* have to use the microsoft-never-gets-it-right macro */
1701 array_free (rfeed, EMPTY);
1188 array_free (fdchange, EMPTY); 1702 array_free (fdchange, EMPTY);
1189 array_free (timer, EMPTY); 1703 array_free (timer, EMPTY);
1190#if EV_PERIODIC_ENABLE 1704#if EV_PERIODIC_ENABLE
1191 array_free (periodic, EMPTY); 1705 array_free (periodic, EMPTY);
1192#endif 1706#endif
… …
1200#endif 1714#endif
1201 1715
1202 backend = 0; 1716 backend = 0;
1203} 1717}
1204 1718
1719#if EV_USE_INOTIFY
1205void inline_size infy_fork (EV_P); 1720inline_size void infy_fork (EV_P);
1721#endif
1206 1722
1207void inline_size 1723inline_size void
1208loop_fork (EV_P) 1724loop_fork (EV_P)
1209{ 1725{
1210#if EV_USE_PORT 1726#if EV_USE_PORT
1211 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1727 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1212#endif 1728#endif
… …
1218#endif 1734#endif
1219#if EV_USE_INOTIFY 1735#if EV_USE_INOTIFY
1220 infy_fork (EV_A); 1736 infy_fork (EV_A);
1221#endif 1737#endif
1222 1738
1223 if (ev_is_active (&pipeev)) 1739 if (ev_is_active (&pipe_w))
1224 { 1740 {
1225 /* this "locks" the handlers against writing to the pipe */ 1741 /* this "locks" the handlers against writing to the pipe */
1226 gotsig = gotasync = 1; 1742 /* while we modify the fd vars */
1743 sig_pending = 1;
1744#if EV_ASYNC_ENABLE
1745 async_pending = 1;
1746#endif
1227 1747
1228 ev_ref (EV_A); 1748 ev_ref (EV_A);
1229 ev_io_stop (EV_A_ &pipeev); 1749 ev_io_stop (EV_A_ &pipe_w);
1230 close (evpipe [0]); 1750
1231 close (evpipe [1]); 1751#if EV_USE_EVENTFD
1752 if (evfd >= 0)
1753 close (evfd);
1754#endif
1755
1756 if (evpipe [0] >= 0)
1757 {
1758 EV_WIN32_CLOSE_FD (evpipe [0]);
1759 EV_WIN32_CLOSE_FD (evpipe [1]);
1760 }
1232 1761
1233 evpipe_init (EV_A); 1762 evpipe_init (EV_A);
1234 /* now iterate over everything, in case we missed something */ 1763 /* now iterate over everything, in case we missed something */
1235 pipecb (EV_A_ &pipeev, EV_READ); 1764 pipecb (EV_A_ &pipe_w, EV_READ);
1236 } 1765 }
1237 1766
1238 postfork = 0; 1767 postfork = 0;
1239} 1768}
1240 1769
1241#if EV_MULTIPLICITY 1770#if EV_MULTIPLICITY
1771
1242struct ev_loop * 1772struct ev_loop *
1243ev_loop_new (unsigned int flags) 1773ev_loop_new (unsigned int flags)
1244{ 1774{
1245 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1246 1776
1247 memset (loop, 0, sizeof (struct ev_loop)); 1777 memset (EV_A, 0, sizeof (struct ev_loop));
1248
1249 loop_init (EV_A_ flags); 1778 loop_init (EV_A_ flags);
1250 1779
1251 if (ev_backend (EV_A)) 1780 if (ev_backend (EV_A))
1252 return loop; 1781 return EV_A;
1253 1782
1254 return 0; 1783 return 0;
1255} 1784}
1256 1785
1257void 1786void
… …
1264void 1793void
1265ev_loop_fork (EV_P) 1794ev_loop_fork (EV_P)
1266{ 1795{
1267 postfork = 1; /* must be in line with ev_default_fork */ 1796 postfork = 1; /* must be in line with ev_default_fork */
1268} 1797}
1798#endif /* multiplicity */
1269 1799
1800#if EV_VERIFY
1801static void noinline
1802verify_watcher (EV_P_ W w)
1803{
1804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1805
1806 if (w->pending)
1807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1808}
1809
1810static void noinline
1811verify_heap (EV_P_ ANHE *heap, int N)
1812{
1813 int i;
1814
1815 for (i = HEAP0; i < N + HEAP0; ++i)
1816 {
1817 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1818 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1819 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1820
1821 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1822 }
1823}
1824
1825static void noinline
1826array_verify (EV_P_ W *ws, int cnt)
1827{
1828 while (cnt--)
1829 {
1830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1831 verify_watcher (EV_A_ ws [cnt]);
1832 }
1833}
1834#endif
1835
1836#if EV_MINIMAL < 2
1837void
1838ev_loop_verify (EV_P)
1839{
1840#if EV_VERIFY
1841 int i;
1842 WL w;
1843
1844 assert (activecnt >= -1);
1845
1846 assert (fdchangemax >= fdchangecnt);
1847 for (i = 0; i < fdchangecnt; ++i)
1848 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1849
1850 assert (anfdmax >= 0);
1851 for (i = 0; i < anfdmax; ++i)
1852 for (w = anfds [i].head; w; w = w->next)
1853 {
1854 verify_watcher (EV_A_ (W)w);
1855 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1856 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1857 }
1858
1859 assert (timermax >= timercnt);
1860 verify_heap (EV_A_ timers, timercnt);
1861
1862#if EV_PERIODIC_ENABLE
1863 assert (periodicmax >= periodiccnt);
1864 verify_heap (EV_A_ periodics, periodiccnt);
1865#endif
1866
1867 for (i = NUMPRI; i--; )
1868 {
1869 assert (pendingmax [i] >= pendingcnt [i]);
1870#if EV_IDLE_ENABLE
1871 assert (idleall >= 0);
1872 assert (idlemax [i] >= idlecnt [i]);
1873 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1874#endif
1875 }
1876
1877#if EV_FORK_ENABLE
1878 assert (forkmax >= forkcnt);
1879 array_verify (EV_A_ (W *)forks, forkcnt);
1880#endif
1881
1882#if EV_ASYNC_ENABLE
1883 assert (asyncmax >= asynccnt);
1884 array_verify (EV_A_ (W *)asyncs, asynccnt);
1885#endif
1886
1887 assert (preparemax >= preparecnt);
1888 array_verify (EV_A_ (W *)prepares, preparecnt);
1889
1890 assert (checkmax >= checkcnt);
1891 array_verify (EV_A_ (W *)checks, checkcnt);
1892
1893# if 0
1894 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1895 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1896# endif
1897#endif
1898}
1270#endif 1899#endif
1271 1900
1272#if EV_MULTIPLICITY 1901#if EV_MULTIPLICITY
1273struct ev_loop * 1902struct ev_loop *
1274ev_default_loop_init (unsigned int flags) 1903ev_default_loop_init (unsigned int flags)
… …
1278#endif 1907#endif
1279{ 1908{
1280 if (!ev_default_loop_ptr) 1909 if (!ev_default_loop_ptr)
1281 { 1910 {
1282#if EV_MULTIPLICITY 1911#if EV_MULTIPLICITY
1283 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1912 EV_P = ev_default_loop_ptr = &default_loop_struct;
1284#else 1913#else
1285 ev_default_loop_ptr = 1; 1914 ev_default_loop_ptr = 1;
1286#endif 1915#endif
1287 1916
1288 loop_init (EV_A_ flags); 1917 loop_init (EV_A_ flags);
… …
1305 1934
1306void 1935void
1307ev_default_destroy (void) 1936ev_default_destroy (void)
1308{ 1937{
1309#if EV_MULTIPLICITY 1938#if EV_MULTIPLICITY
1310 struct ev_loop *loop = ev_default_loop_ptr; 1939 EV_P = ev_default_loop_ptr;
1311#endif 1940#endif
1941
1942 ev_default_loop_ptr = 0;
1312 1943
1313#ifndef _WIN32 1944#ifndef _WIN32
1314 ev_ref (EV_A); /* child watcher */ 1945 ev_ref (EV_A); /* child watcher */
1315 ev_signal_stop (EV_A_ &childev); 1946 ev_signal_stop (EV_A_ &childev);
1316#endif 1947#endif
… …
1320 1951
1321void 1952void
1322ev_default_fork (void) 1953ev_default_fork (void)
1323{ 1954{
1324#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1325 struct ev_loop *loop = ev_default_loop_ptr; 1956 EV_P = ev_default_loop_ptr;
1326#endif 1957#endif
1327 1958
1328 if (backend)
1329 postfork = 1; /* must be in line with ev_loop_fork */ 1959 postfork = 1; /* must be in line with ev_loop_fork */
1330} 1960}
1331 1961
1332/*****************************************************************************/ 1962/*****************************************************************************/
1333 1963
1334void 1964void
1335ev_invoke (EV_P_ void *w, int revents) 1965ev_invoke (EV_P_ void *w, int revents)
1336{ 1966{
1337 EV_CB_INVOKE ((W)w, revents); 1967 EV_CB_INVOKE ((W)w, revents);
1338} 1968}
1339 1969
1340void inline_speed 1970unsigned int
1341call_pending (EV_P) 1971ev_pending_count (EV_P)
1972{
1973 int pri;
1974 unsigned int count = 0;
1975
1976 for (pri = NUMPRI; pri--; )
1977 count += pendingcnt [pri];
1978
1979 return count;
1980}
1981
1982void noinline
1983ev_invoke_pending (EV_P)
1342{ 1984{
1343 int pri; 1985 int pri;
1344 1986
1345 for (pri = NUMPRI; pri--; ) 1987 for (pri = NUMPRI; pri--; )
1346 while (pendingcnt [pri]) 1988 while (pendingcnt [pri])
1347 { 1989 {
1348 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1990 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1349 1991
1350 if (expect_true (p->w))
1351 {
1352 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1992 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1993 /* ^ this is no longer true, as pending_w could be here */
1353 1994
1354 p->w->pending = 0; 1995 p->w->pending = 0;
1355 EV_CB_INVOKE (p->w, p->events); 1996 EV_CB_INVOKE (p->w, p->events);
1356 } 1997 EV_FREQUENT_CHECK;
1357 } 1998 }
1358} 1999}
1359 2000
1360void inline_size
1361timers_reify (EV_P)
1362{
1363 while (timercnt && ((WT)timers [0])->at <= mn_now)
1364 {
1365 ev_timer *w = (ev_timer *)timers [0];
1366
1367 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1368
1369 /* first reschedule or stop timer */
1370 if (w->repeat)
1371 {
1372 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1373
1374 ((WT)w)->at += w->repeat;
1375 if (((WT)w)->at < mn_now)
1376 ((WT)w)->at = mn_now;
1377
1378 downheap (timers, timercnt, 0);
1379 }
1380 else
1381 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1382
1383 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1384 }
1385}
1386
1387#if EV_PERIODIC_ENABLE
1388void inline_size
1389periodics_reify (EV_P)
1390{
1391 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1392 {
1393 ev_periodic *w = (ev_periodic *)periodics [0];
1394
1395 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1396
1397 /* first reschedule or stop timer */
1398 if (w->reschedule_cb)
1399 {
1400 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1401 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1402 downheap (periodics, periodiccnt, 0);
1403 }
1404 else if (w->interval)
1405 {
1406 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1407 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1408 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1409 downheap (periodics, periodiccnt, 0);
1410 }
1411 else
1412 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1413
1414 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1415 }
1416}
1417
1418static void noinline
1419periodics_reschedule (EV_P)
1420{
1421 int i;
1422
1423 /* adjust periodics after time jump */
1424 for (i = 0; i < periodiccnt; ++i)
1425 {
1426 ev_periodic *w = (ev_periodic *)periodics [i];
1427
1428 if (w->reschedule_cb)
1429 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1430 else if (w->interval)
1431 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1432 }
1433
1434 /* now rebuild the heap */
1435 for (i = periodiccnt >> 1; i--; )
1436 downheap (periodics, periodiccnt, i);
1437}
1438#endif
1439
1440#if EV_IDLE_ENABLE 2001#if EV_IDLE_ENABLE
1441void inline_size 2002/* make idle watchers pending. this handles the "call-idle */
2003/* only when higher priorities are idle" logic */
2004inline_size void
1442idle_reify (EV_P) 2005idle_reify (EV_P)
1443{ 2006{
1444 if (expect_false (idleall)) 2007 if (expect_false (idleall))
1445 { 2008 {
1446 int pri; 2009 int pri;
… …
1458 } 2021 }
1459 } 2022 }
1460} 2023}
1461#endif 2024#endif
1462 2025
1463void inline_speed 2026/* make timers pending */
2027inline_size void
2028timers_reify (EV_P)
2029{
2030 EV_FREQUENT_CHECK;
2031
2032 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2033 {
2034 do
2035 {
2036 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2037
2038 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2039
2040 /* first reschedule or stop timer */
2041 if (w->repeat)
2042 {
2043 ev_at (w) += w->repeat;
2044 if (ev_at (w) < mn_now)
2045 ev_at (w) = mn_now;
2046
2047 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2048
2049 ANHE_at_cache (timers [HEAP0]);
2050 downheap (timers, timercnt, HEAP0);
2051 }
2052 else
2053 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2054
2055 EV_FREQUENT_CHECK;
2056 feed_reverse (EV_A_ (W)w);
2057 }
2058 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2059
2060 feed_reverse_done (EV_A_ EV_TIMEOUT);
2061 }
2062}
2063
2064#if EV_PERIODIC_ENABLE
2065/* make periodics pending */
2066inline_size void
2067periodics_reify (EV_P)
2068{
2069 EV_FREQUENT_CHECK;
2070
2071 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2072 {
2073 int feed_count = 0;
2074
2075 do
2076 {
2077 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2078
2079 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2080
2081 /* first reschedule or stop timer */
2082 if (w->reschedule_cb)
2083 {
2084 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2085
2086 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2087
2088 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0);
2090 }
2091 else if (w->interval)
2092 {
2093 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2094 /* if next trigger time is not sufficiently in the future, put it there */
2095 /* this might happen because of floating point inexactness */
2096 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2097 {
2098 ev_at (w) += w->interval;
2099
2100 /* if interval is unreasonably low we might still have a time in the past */
2101 /* so correct this. this will make the periodic very inexact, but the user */
2102 /* has effectively asked to get triggered more often than possible */
2103 if (ev_at (w) < ev_rt_now)
2104 ev_at (w) = ev_rt_now;
2105 }
2106
2107 ANHE_at_cache (periodics [HEAP0]);
2108 downheap (periodics, periodiccnt, HEAP0);
2109 }
2110 else
2111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2112
2113 EV_FREQUENT_CHECK;
2114 feed_reverse (EV_A_ (W)w);
2115 }
2116 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2117
2118 feed_reverse_done (EV_A_ EV_PERIODIC);
2119 }
2120}
2121
2122/* simply recalculate all periodics */
2123/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2124static void noinline
2125periodics_reschedule (EV_P)
2126{
2127 int i;
2128
2129 /* adjust periodics after time jump */
2130 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2131 {
2132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2133
2134 if (w->reschedule_cb)
2135 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2136 else if (w->interval)
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2138
2139 ANHE_at_cache (periodics [i]);
2140 }
2141
2142 reheap (periodics, periodiccnt);
2143}
2144#endif
2145
2146/* adjust all timers by a given offset */
2147static void noinline
2148timers_reschedule (EV_P_ ev_tstamp adjust)
2149{
2150 int i;
2151
2152 for (i = 0; i < timercnt; ++i)
2153 {
2154 ANHE *he = timers + i + HEAP0;
2155 ANHE_w (*he)->at += adjust;
2156 ANHE_at_cache (*he);
2157 }
2158}
2159
2160/* fetch new monotonic and realtime times from the kernel */
2161/* also detetc if there was a timejump, and act accordingly */
2162inline_speed void
1464time_update (EV_P_ ev_tstamp max_block) 2163time_update (EV_P_ ev_tstamp max_block)
1465{ 2164{
1466 int i;
1467
1468#if EV_USE_MONOTONIC 2165#if EV_USE_MONOTONIC
1469 if (expect_true (have_monotonic)) 2166 if (expect_true (have_monotonic))
1470 { 2167 {
2168 int i;
1471 ev_tstamp odiff = rtmn_diff; 2169 ev_tstamp odiff = rtmn_diff;
1472 2170
1473 mn_now = get_clock (); 2171 mn_now = get_clock ();
1474 2172
1475 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2173 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1493 */ 2191 */
1494 for (i = 4; --i; ) 2192 for (i = 4; --i; )
1495 { 2193 {
1496 rtmn_diff = ev_rt_now - mn_now; 2194 rtmn_diff = ev_rt_now - mn_now;
1497 2195
1498 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2196 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1499 return; /* all is well */ 2197 return; /* all is well */
1500 2198
1501 ev_rt_now = ev_time (); 2199 ev_rt_now = ev_time ();
1502 mn_now = get_clock (); 2200 mn_now = get_clock ();
1503 now_floor = mn_now; 2201 now_floor = mn_now;
1504 } 2202 }
1505 2203
2204 /* no timer adjustment, as the monotonic clock doesn't jump */
2205 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1506# if EV_PERIODIC_ENABLE 2206# if EV_PERIODIC_ENABLE
1507 periodics_reschedule (EV_A); 2207 periodics_reschedule (EV_A);
1508# endif 2208# endif
1509 /* no timer adjustment, as the monotonic clock doesn't jump */
1510 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1511 } 2209 }
1512 else 2210 else
1513#endif 2211#endif
1514 { 2212 {
1515 ev_rt_now = ev_time (); 2213 ev_rt_now = ev_time ();
1516 2214
1517 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2215 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1518 { 2216 {
2217 /* adjust timers. this is easy, as the offset is the same for all of them */
2218 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1519#if EV_PERIODIC_ENABLE 2219#if EV_PERIODIC_ENABLE
1520 periodics_reschedule (EV_A); 2220 periodics_reschedule (EV_A);
1521#endif 2221#endif
1522 /* adjust timers. this is easy, as the offset is the same for all of them */
1523 for (i = 0; i < timercnt; ++i)
1524 ((WT)timers [i])->at += ev_rt_now - mn_now;
1525 } 2222 }
1526 2223
1527 mn_now = ev_rt_now; 2224 mn_now = ev_rt_now;
1528 } 2225 }
1529} 2226}
1530 2227
1531void 2228void
1532ev_ref (EV_P)
1533{
1534 ++activecnt;
1535}
1536
1537void
1538ev_unref (EV_P)
1539{
1540 --activecnt;
1541}
1542
1543static int loop_done;
1544
1545void
1546ev_loop (EV_P_ int flags) 2229ev_loop (EV_P_ int flags)
1547{ 2230{
1548 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2231#if EV_MINIMAL < 2
1549 ? EVUNLOOP_ONE 2232 ++loop_depth;
1550 : EVUNLOOP_CANCEL; 2233#endif
1551 2234
2235 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2236
2237 loop_done = EVUNLOOP_CANCEL;
2238
1552 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2239 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1553 2240
1554 do 2241 do
1555 { 2242 {
2243#if EV_VERIFY >= 2
2244 ev_loop_verify (EV_A);
2245#endif
2246
1556#ifndef _WIN32 2247#ifndef _WIN32
1557 if (expect_false (curpid)) /* penalise the forking check even more */ 2248 if (expect_false (curpid)) /* penalise the forking check even more */
1558 if (expect_false (getpid () != curpid)) 2249 if (expect_false (getpid () != curpid))
1559 { 2250 {
1560 curpid = getpid (); 2251 curpid = getpid ();
… …
1566 /* we might have forked, so queue fork handlers */ 2257 /* we might have forked, so queue fork handlers */
1567 if (expect_false (postfork)) 2258 if (expect_false (postfork))
1568 if (forkcnt) 2259 if (forkcnt)
1569 { 2260 {
1570 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2261 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1571 call_pending (EV_A); 2262 EV_INVOKE_PENDING;
1572 } 2263 }
1573#endif 2264#endif
1574 2265
1575 /* queue prepare watchers (and execute them) */ 2266 /* queue prepare watchers (and execute them) */
1576 if (expect_false (preparecnt)) 2267 if (expect_false (preparecnt))
1577 { 2268 {
1578 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1579 call_pending (EV_A); 2270 EV_INVOKE_PENDING;
1580 } 2271 }
1581 2272
1582 if (expect_false (!activecnt)) 2273 if (expect_false (loop_done))
1583 break; 2274 break;
1584 2275
1585 /* we might have forked, so reify kernel state if necessary */ 2276 /* we might have forked, so reify kernel state if necessary */
1586 if (expect_false (postfork)) 2277 if (expect_false (postfork))
1587 loop_fork (EV_A); 2278 loop_fork (EV_A);
… …
1594 ev_tstamp waittime = 0.; 2285 ev_tstamp waittime = 0.;
1595 ev_tstamp sleeptime = 0.; 2286 ev_tstamp sleeptime = 0.;
1596 2287
1597 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2288 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1598 { 2289 {
2290 /* remember old timestamp for io_blocktime calculation */
2291 ev_tstamp prev_mn_now = mn_now;
2292
1599 /* update time to cancel out callback processing overhead */ 2293 /* update time to cancel out callback processing overhead */
1600 time_update (EV_A_ 1e100); 2294 time_update (EV_A_ 1e100);
1601 2295
1602 waittime = MAX_BLOCKTIME; 2296 waittime = MAX_BLOCKTIME;
1603 2297
1604 if (timercnt) 2298 if (timercnt)
1605 { 2299 {
1606 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2300 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1607 if (waittime > to) waittime = to; 2301 if (waittime > to) waittime = to;
1608 } 2302 }
1609 2303
1610#if EV_PERIODIC_ENABLE 2304#if EV_PERIODIC_ENABLE
1611 if (periodiccnt) 2305 if (periodiccnt)
1612 { 2306 {
1613 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2307 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1614 if (waittime > to) waittime = to; 2308 if (waittime > to) waittime = to;
1615 } 2309 }
1616#endif 2310#endif
1617 2311
2312 /* don't let timeouts decrease the waittime below timeout_blocktime */
1618 if (expect_false (waittime < timeout_blocktime)) 2313 if (expect_false (waittime < timeout_blocktime))
1619 waittime = timeout_blocktime; 2314 waittime = timeout_blocktime;
1620 2315
1621 sleeptime = waittime - backend_fudge; 2316 /* extra check because io_blocktime is commonly 0 */
1622
1623 if (expect_true (sleeptime > io_blocktime)) 2317 if (expect_false (io_blocktime))
1624 sleeptime = io_blocktime;
1625
1626 if (sleeptime)
1627 { 2318 {
2319 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2320
2321 if (sleeptime > waittime - backend_fudge)
2322 sleeptime = waittime - backend_fudge;
2323
2324 if (expect_true (sleeptime > 0.))
2325 {
1628 ev_sleep (sleeptime); 2326 ev_sleep (sleeptime);
1629 waittime -= sleeptime; 2327 waittime -= sleeptime;
2328 }
1630 } 2329 }
1631 } 2330 }
1632 2331
2332#if EV_MINIMAL < 2
1633 ++loop_count; 2333 ++loop_count;
2334#endif
2335 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1634 backend_poll (EV_A_ waittime); 2336 backend_poll (EV_A_ waittime);
2337 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1635 2338
1636 /* update ev_rt_now, do magic */ 2339 /* update ev_rt_now, do magic */
1637 time_update (EV_A_ waittime + sleeptime); 2340 time_update (EV_A_ waittime + sleeptime);
1638 } 2341 }
1639 2342
… …
1650 2353
1651 /* queue check watchers, to be executed first */ 2354 /* queue check watchers, to be executed first */
1652 if (expect_false (checkcnt)) 2355 if (expect_false (checkcnt))
1653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2356 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1654 2357
1655 call_pending (EV_A); 2358 EV_INVOKE_PENDING;
1656
1657 } 2359 }
1658 while (expect_true (activecnt && !loop_done)); 2360 while (expect_true (
2361 activecnt
2362 && !loop_done
2363 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2364 ));
1659 2365
1660 if (loop_done == EVUNLOOP_ONE) 2366 if (loop_done == EVUNLOOP_ONE)
1661 loop_done = EVUNLOOP_CANCEL; 2367 loop_done = EVUNLOOP_CANCEL;
2368
2369#if EV_MINIMAL < 2
2370 --loop_depth;
2371#endif
1662} 2372}
1663 2373
1664void 2374void
1665ev_unloop (EV_P_ int how) 2375ev_unloop (EV_P_ int how)
1666{ 2376{
1667 loop_done = how; 2377 loop_done = how;
1668} 2378}
1669 2379
2380void
2381ev_ref (EV_P)
2382{
2383 ++activecnt;
2384}
2385
2386void
2387ev_unref (EV_P)
2388{
2389 --activecnt;
2390}
2391
2392void
2393ev_now_update (EV_P)
2394{
2395 time_update (EV_A_ 1e100);
2396}
2397
2398void
2399ev_suspend (EV_P)
2400{
2401 ev_now_update (EV_A);
2402}
2403
2404void
2405ev_resume (EV_P)
2406{
2407 ev_tstamp mn_prev = mn_now;
2408
2409 ev_now_update (EV_A);
2410 timers_reschedule (EV_A_ mn_now - mn_prev);
2411#if EV_PERIODIC_ENABLE
2412 /* TODO: really do this? */
2413 periodics_reschedule (EV_A);
2414#endif
2415}
2416
1670/*****************************************************************************/ 2417/*****************************************************************************/
2418/* singly-linked list management, used when the expected list length is short */
1671 2419
1672void inline_size 2420inline_size void
1673wlist_add (WL *head, WL elem) 2421wlist_add (WL *head, WL elem)
1674{ 2422{
1675 elem->next = *head; 2423 elem->next = *head;
1676 *head = elem; 2424 *head = elem;
1677} 2425}
1678 2426
1679void inline_size 2427inline_size void
1680wlist_del (WL *head, WL elem) 2428wlist_del (WL *head, WL elem)
1681{ 2429{
1682 while (*head) 2430 while (*head)
1683 { 2431 {
1684 if (*head == elem) 2432 if (expect_true (*head == elem))
1685 { 2433 {
1686 *head = elem->next; 2434 *head = elem->next;
1687 return; 2435 break;
1688 } 2436 }
1689 2437
1690 head = &(*head)->next; 2438 head = &(*head)->next;
1691 } 2439 }
1692} 2440}
1693 2441
1694void inline_speed 2442/* internal, faster, version of ev_clear_pending */
2443inline_speed void
1695clear_pending (EV_P_ W w) 2444clear_pending (EV_P_ W w)
1696{ 2445{
1697 if (w->pending) 2446 if (w->pending)
1698 { 2447 {
1699 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2448 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1700 w->pending = 0; 2449 w->pending = 0;
1701 } 2450 }
1702} 2451}
1703 2452
1704int 2453int
… …
1708 int pending = w_->pending; 2457 int pending = w_->pending;
1709 2458
1710 if (expect_true (pending)) 2459 if (expect_true (pending))
1711 { 2460 {
1712 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2461 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2462 p->w = (W)&pending_w;
1713 w_->pending = 0; 2463 w_->pending = 0;
1714 p->w = 0;
1715 return p->events; 2464 return p->events;
1716 } 2465 }
1717 else 2466 else
1718 return 0; 2467 return 0;
1719} 2468}
1720 2469
1721void inline_size 2470inline_size void
1722pri_adjust (EV_P_ W w) 2471pri_adjust (EV_P_ W w)
1723{ 2472{
1724 int pri = w->priority; 2473 int pri = ev_priority (w);
1725 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2474 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1726 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2475 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1727 w->priority = pri; 2476 ev_set_priority (w, pri);
1728} 2477}
1729 2478
1730void inline_speed 2479inline_speed void
1731ev_start (EV_P_ W w, int active) 2480ev_start (EV_P_ W w, int active)
1732{ 2481{
1733 pri_adjust (EV_A_ w); 2482 pri_adjust (EV_A_ w);
1734 w->active = active; 2483 w->active = active;
1735 ev_ref (EV_A); 2484 ev_ref (EV_A);
1736} 2485}
1737 2486
1738void inline_size 2487inline_size void
1739ev_stop (EV_P_ W w) 2488ev_stop (EV_P_ W w)
1740{ 2489{
1741 ev_unref (EV_A); 2490 ev_unref (EV_A);
1742 w->active = 0; 2491 w->active = 0;
1743} 2492}
… …
1750 int fd = w->fd; 2499 int fd = w->fd;
1751 2500
1752 if (expect_false (ev_is_active (w))) 2501 if (expect_false (ev_is_active (w)))
1753 return; 2502 return;
1754 2503
1755 assert (("ev_io_start called with negative fd", fd >= 0)); 2504 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2505 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2506
2507 EV_FREQUENT_CHECK;
1756 2508
1757 ev_start (EV_A_ (W)w, 1); 2509 ev_start (EV_A_ (W)w, 1);
1758 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2510 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1759 wlist_add (&anfds[fd].head, (WL)w); 2511 wlist_add (&anfds[fd].head, (WL)w);
1760 2512
1761 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2513 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1762 w->events &= ~EV_IOFDSET; 2514 w->events &= ~EV__IOFDSET;
2515
2516 EV_FREQUENT_CHECK;
1763} 2517}
1764 2518
1765void noinline 2519void noinline
1766ev_io_stop (EV_P_ ev_io *w) 2520ev_io_stop (EV_P_ ev_io *w)
1767{ 2521{
1768 clear_pending (EV_A_ (W)w); 2522 clear_pending (EV_A_ (W)w);
1769 if (expect_false (!ev_is_active (w))) 2523 if (expect_false (!ev_is_active (w)))
1770 return; 2524 return;
1771 2525
1772 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2526 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2527
2528 EV_FREQUENT_CHECK;
1773 2529
1774 wlist_del (&anfds[w->fd].head, (WL)w); 2530 wlist_del (&anfds[w->fd].head, (WL)w);
1775 ev_stop (EV_A_ (W)w); 2531 ev_stop (EV_A_ (W)w);
1776 2532
1777 fd_change (EV_A_ w->fd, 1); 2533 fd_change (EV_A_ w->fd, 1);
2534
2535 EV_FREQUENT_CHECK;
1778} 2536}
1779 2537
1780void noinline 2538void noinline
1781ev_timer_start (EV_P_ ev_timer *w) 2539ev_timer_start (EV_P_ ev_timer *w)
1782{ 2540{
1783 if (expect_false (ev_is_active (w))) 2541 if (expect_false (ev_is_active (w)))
1784 return; 2542 return;
1785 2543
1786 ((WT)w)->at += mn_now; 2544 ev_at (w) += mn_now;
1787 2545
1788 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2546 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1789 2547
2548 EV_FREQUENT_CHECK;
2549
2550 ++timercnt;
1790 ev_start (EV_A_ (W)w, ++timercnt); 2551 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1791 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2552 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1792 timers [timercnt - 1] = (WT)w; 2553 ANHE_w (timers [ev_active (w)]) = (WT)w;
1793 upheap (timers, timercnt - 1); 2554 ANHE_at_cache (timers [ev_active (w)]);
2555 upheap (timers, ev_active (w));
1794 2556
2557 EV_FREQUENT_CHECK;
2558
1795 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2559 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1796} 2560}
1797 2561
1798void noinline 2562void noinline
1799ev_timer_stop (EV_P_ ev_timer *w) 2563ev_timer_stop (EV_P_ ev_timer *w)
1800{ 2564{
1801 clear_pending (EV_A_ (W)w); 2565 clear_pending (EV_A_ (W)w);
1802 if (expect_false (!ev_is_active (w))) 2566 if (expect_false (!ev_is_active (w)))
1803 return; 2567 return;
1804 2568
1805 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2569 EV_FREQUENT_CHECK;
1806 2570
1807 { 2571 {
1808 int active = ((W)w)->active; 2572 int active = ev_active (w);
1809 2573
2574 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2575
2576 --timercnt;
2577
1810 if (expect_true (--active < --timercnt)) 2578 if (expect_true (active < timercnt + HEAP0))
1811 { 2579 {
1812 timers [active] = timers [timercnt]; 2580 timers [active] = timers [timercnt + HEAP0];
1813 adjustheap (timers, timercnt, active); 2581 adjustheap (timers, timercnt, active);
1814 } 2582 }
1815 } 2583 }
1816 2584
1817 ((WT)w)->at -= mn_now; 2585 EV_FREQUENT_CHECK;
2586
2587 ev_at (w) -= mn_now;
1818 2588
1819 ev_stop (EV_A_ (W)w); 2589 ev_stop (EV_A_ (W)w);
1820} 2590}
1821 2591
1822void noinline 2592void noinline
1823ev_timer_again (EV_P_ ev_timer *w) 2593ev_timer_again (EV_P_ ev_timer *w)
1824{ 2594{
2595 EV_FREQUENT_CHECK;
2596
1825 if (ev_is_active (w)) 2597 if (ev_is_active (w))
1826 { 2598 {
1827 if (w->repeat) 2599 if (w->repeat)
1828 { 2600 {
1829 ((WT)w)->at = mn_now + w->repeat; 2601 ev_at (w) = mn_now + w->repeat;
2602 ANHE_at_cache (timers [ev_active (w)]);
1830 adjustheap (timers, timercnt, ((W)w)->active - 1); 2603 adjustheap (timers, timercnt, ev_active (w));
1831 } 2604 }
1832 else 2605 else
1833 ev_timer_stop (EV_A_ w); 2606 ev_timer_stop (EV_A_ w);
1834 } 2607 }
1835 else if (w->repeat) 2608 else if (w->repeat)
1836 { 2609 {
1837 w->at = w->repeat; 2610 ev_at (w) = w->repeat;
1838 ev_timer_start (EV_A_ w); 2611 ev_timer_start (EV_A_ w);
1839 } 2612 }
2613
2614 EV_FREQUENT_CHECK;
2615}
2616
2617ev_tstamp
2618ev_timer_remaining (EV_P_ ev_timer *w)
2619{
2620 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1840} 2621}
1841 2622
1842#if EV_PERIODIC_ENABLE 2623#if EV_PERIODIC_ENABLE
1843void noinline 2624void noinline
1844ev_periodic_start (EV_P_ ev_periodic *w) 2625ev_periodic_start (EV_P_ ev_periodic *w)
1845{ 2626{
1846 if (expect_false (ev_is_active (w))) 2627 if (expect_false (ev_is_active (w)))
1847 return; 2628 return;
1848 2629
1849 if (w->reschedule_cb) 2630 if (w->reschedule_cb)
1850 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2631 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1851 else if (w->interval) 2632 else if (w->interval)
1852 { 2633 {
1853 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2634 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1854 /* this formula differs from the one in periodic_reify because we do not always round up */ 2635 /* this formula differs from the one in periodic_reify because we do not always round up */
1855 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2636 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1856 } 2637 }
1857 else 2638 else
1858 ((WT)w)->at = w->offset; 2639 ev_at (w) = w->offset;
1859 2640
2641 EV_FREQUENT_CHECK;
2642
2643 ++periodiccnt;
1860 ev_start (EV_A_ (W)w, ++periodiccnt); 2644 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1861 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2645 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1862 periodics [periodiccnt - 1] = (WT)w; 2646 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1863 upheap (periodics, periodiccnt - 1); 2647 ANHE_at_cache (periodics [ev_active (w)]);
2648 upheap (periodics, ev_active (w));
1864 2649
2650 EV_FREQUENT_CHECK;
2651
1865 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2652 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1866} 2653}
1867 2654
1868void noinline 2655void noinline
1869ev_periodic_stop (EV_P_ ev_periodic *w) 2656ev_periodic_stop (EV_P_ ev_periodic *w)
1870{ 2657{
1871 clear_pending (EV_A_ (W)w); 2658 clear_pending (EV_A_ (W)w);
1872 if (expect_false (!ev_is_active (w))) 2659 if (expect_false (!ev_is_active (w)))
1873 return; 2660 return;
1874 2661
1875 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2662 EV_FREQUENT_CHECK;
1876 2663
1877 { 2664 {
1878 int active = ((W)w)->active; 2665 int active = ev_active (w);
1879 2666
2667 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2668
2669 --periodiccnt;
2670
1880 if (expect_true (--active < --periodiccnt)) 2671 if (expect_true (active < periodiccnt + HEAP0))
1881 { 2672 {
1882 periodics [active] = periodics [periodiccnt]; 2673 periodics [active] = periodics [periodiccnt + HEAP0];
1883 adjustheap (periodics, periodiccnt, active); 2674 adjustheap (periodics, periodiccnt, active);
1884 } 2675 }
1885 } 2676 }
1886 2677
2678 EV_FREQUENT_CHECK;
2679
1887 ev_stop (EV_A_ (W)w); 2680 ev_stop (EV_A_ (W)w);
1888} 2681}
1889 2682
1890void noinline 2683void noinline
1891ev_periodic_again (EV_P_ ev_periodic *w) 2684ev_periodic_again (EV_P_ ev_periodic *w)
… …
1901#endif 2694#endif
1902 2695
1903void noinline 2696void noinline
1904ev_signal_start (EV_P_ ev_signal *w) 2697ev_signal_start (EV_P_ ev_signal *w)
1905{ 2698{
1906#if EV_MULTIPLICITY
1907 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1908#endif
1909 if (expect_false (ev_is_active (w))) 2699 if (expect_false (ev_is_active (w)))
1910 return; 2700 return;
1911 2701
1912 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2702 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1913 2703
1914 evpipe_init (EV_A); 2704#if EV_MULTIPLICITY
2705 assert (("libev: a signal must not be attached to two different loops",
2706 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1915 2707
2708 signals [w->signum - 1].loop = EV_A;
2709#endif
2710
2711 EV_FREQUENT_CHECK;
2712
2713#if EV_USE_SIGNALFD
2714 if (sigfd == -2)
1916 { 2715 {
1917#ifndef _WIN32 2716 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1918 sigset_t full, prev; 2717 if (sigfd < 0 && errno == EINVAL)
1919 sigfillset (&full); 2718 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1920 sigprocmask (SIG_SETMASK, &full, &prev);
1921#endif
1922 2719
1923 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2720 if (sigfd >= 0)
2721 {
2722 fd_intern (sigfd); /* doing it twice will not hurt */
1924 2723
1925#ifndef _WIN32 2724 sigemptyset (&sigfd_set);
1926 sigprocmask (SIG_SETMASK, &prev, 0); 2725
1927#endif 2726 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2727 ev_set_priority (&sigfd_w, EV_MAXPRI);
2728 ev_io_start (EV_A_ &sigfd_w);
2729 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2730 }
1928 } 2731 }
2732
2733 if (sigfd >= 0)
2734 {
2735 /* TODO: check .head */
2736 sigaddset (&sigfd_set, w->signum);
2737 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2738
2739 signalfd (sigfd, &sigfd_set, 0);
2740 }
2741#endif
1929 2742
1930 ev_start (EV_A_ (W)w, 1); 2743 ev_start (EV_A_ (W)w, 1);
1931 wlist_add (&signals [w->signum - 1].head, (WL)w); 2744 wlist_add (&signals [w->signum - 1].head, (WL)w);
1932 2745
1933 if (!((WL)w)->next) 2746 if (!((WL)w)->next)
2747# if EV_USE_SIGNALFD
2748 if (sigfd < 0) /*TODO*/
2749# endif
1934 { 2750 {
1935#if _WIN32 2751# if _WIN32
2752 evpipe_init (EV_A);
2753
1936 signal (w->signum, sighandler); 2754 signal (w->signum, ev_sighandler);
1937#else 2755# else
1938 struct sigaction sa; 2756 struct sigaction sa;
2757
2758 evpipe_init (EV_A);
2759
1939 sa.sa_handler = sighandler; 2760 sa.sa_handler = ev_sighandler;
1940 sigfillset (&sa.sa_mask); 2761 sigfillset (&sa.sa_mask);
1941 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2762 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1942 sigaction (w->signum, &sa, 0); 2763 sigaction (w->signum, &sa, 0);
2764
2765 sigemptyset (&sa.sa_mask);
2766 sigaddset (&sa.sa_mask, w->signum);
2767 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1943#endif 2768#endif
1944 } 2769 }
2770
2771 EV_FREQUENT_CHECK;
1945} 2772}
1946 2773
1947void noinline 2774void noinline
1948ev_signal_stop (EV_P_ ev_signal *w) 2775ev_signal_stop (EV_P_ ev_signal *w)
1949{ 2776{
1950 clear_pending (EV_A_ (W)w); 2777 clear_pending (EV_A_ (W)w);
1951 if (expect_false (!ev_is_active (w))) 2778 if (expect_false (!ev_is_active (w)))
1952 return; 2779 return;
1953 2780
2781 EV_FREQUENT_CHECK;
2782
1954 wlist_del (&signals [w->signum - 1].head, (WL)w); 2783 wlist_del (&signals [w->signum - 1].head, (WL)w);
1955 ev_stop (EV_A_ (W)w); 2784 ev_stop (EV_A_ (W)w);
1956 2785
1957 if (!signals [w->signum - 1].head) 2786 if (!signals [w->signum - 1].head)
2787 {
2788#if EV_MULTIPLICITY
2789 signals [w->signum - 1].loop = 0; /* unattach from signal */
2790#endif
2791#if EV_USE_SIGNALFD
2792 if (sigfd >= 0)
2793 {
2794 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2795 sigdelset (&sigfd_set, w->signum);
2796 signalfd (sigfd, &sigfd_set, 0);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2798 /*TODO: maybe unblock signal? */
2799 }
2800 else
2801#endif
1958 signal (w->signum, SIG_DFL); 2802 signal (w->signum, SIG_DFL);
2803 }
2804
2805 EV_FREQUENT_CHECK;
1959} 2806}
1960 2807
1961void 2808void
1962ev_child_start (EV_P_ ev_child *w) 2809ev_child_start (EV_P_ ev_child *w)
1963{ 2810{
1964#if EV_MULTIPLICITY 2811#if EV_MULTIPLICITY
1965 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2812 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1966#endif 2813#endif
1967 if (expect_false (ev_is_active (w))) 2814 if (expect_false (ev_is_active (w)))
1968 return; 2815 return;
1969 2816
2817 EV_FREQUENT_CHECK;
2818
1970 ev_start (EV_A_ (W)w, 1); 2819 ev_start (EV_A_ (W)w, 1);
1971 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2820 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2821
2822 EV_FREQUENT_CHECK;
1972} 2823}
1973 2824
1974void 2825void
1975ev_child_stop (EV_P_ ev_child *w) 2826ev_child_stop (EV_P_ ev_child *w)
1976{ 2827{
1977 clear_pending (EV_A_ (W)w); 2828 clear_pending (EV_A_ (W)w);
1978 if (expect_false (!ev_is_active (w))) 2829 if (expect_false (!ev_is_active (w)))
1979 return; 2830 return;
1980 2831
2832 EV_FREQUENT_CHECK;
2833
1981 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2834 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1982 ev_stop (EV_A_ (W)w); 2835 ev_stop (EV_A_ (W)w);
2836
2837 EV_FREQUENT_CHECK;
1983} 2838}
1984 2839
1985#if EV_STAT_ENABLE 2840#if EV_STAT_ENABLE
1986 2841
1987# ifdef _WIN32 2842# ifdef _WIN32
1988# undef lstat 2843# undef lstat
1989# define lstat(a,b) _stati64 (a,b) 2844# define lstat(a,b) _stati64 (a,b)
1990# endif 2845# endif
1991 2846
1992#define DEF_STAT_INTERVAL 5.0074891 2847#define DEF_STAT_INTERVAL 5.0074891
2848#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1993#define MIN_STAT_INTERVAL 0.1074891 2849#define MIN_STAT_INTERVAL 0.1074891
1994 2850
1995static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2851static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1996 2852
1997#if EV_USE_INOTIFY 2853#if EV_USE_INOTIFY
1998# define EV_INOTIFY_BUFSIZE 8192 2854# define EV_INOTIFY_BUFSIZE 8192
… …
2000static void noinline 2856static void noinline
2001infy_add (EV_P_ ev_stat *w) 2857infy_add (EV_P_ ev_stat *w)
2002{ 2858{
2003 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); 2859 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);
2004 2860
2005 if (w->wd < 0) 2861 if (w->wd >= 0)
2862 {
2863 struct statfs sfs;
2864
2865 /* now local changes will be tracked by inotify, but remote changes won't */
2866 /* unless the filesystem is known to be local, we therefore still poll */
2867 /* also do poll on <2.6.25, but with normal frequency */
2868
2869 if (!fs_2625)
2870 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2871 else if (!statfs (w->path, &sfs)
2872 && (sfs.f_type == 0x1373 /* devfs */
2873 || sfs.f_type == 0xEF53 /* ext2/3 */
2874 || sfs.f_type == 0x3153464a /* jfs */
2875 || sfs.f_type == 0x52654973 /* reiser3 */
2876 || sfs.f_type == 0x01021994 /* tempfs */
2877 || sfs.f_type == 0x58465342 /* xfs */))
2878 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2879 else
2880 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2006 { 2881 }
2007 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2882 else
2883 {
2884 /* can't use inotify, continue to stat */
2885 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2008 2886
2009 /* monitor some parent directory for speedup hints */ 2887 /* if path is not there, monitor some parent directory for speedup hints */
2888 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2889 /* but an efficiency issue only */
2010 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2890 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2011 { 2891 {
2012 char path [4096]; 2892 char path [4096];
2013 strcpy (path, w->path); 2893 strcpy (path, w->path);
2014 2894
… …
2017 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2897 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2018 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2898 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2019 2899
2020 char *pend = strrchr (path, '/'); 2900 char *pend = strrchr (path, '/');
2021 2901
2022 if (!pend) 2902 if (!pend || pend == path)
2023 break; /* whoops, no '/', complain to your admin */ 2903 break;
2024 2904
2025 *pend = 0; 2905 *pend = 0;
2026 w->wd = inotify_add_watch (fs_fd, path, mask); 2906 w->wd = inotify_add_watch (fs_fd, path, mask);
2027 } 2907 }
2028 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2908 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2029 } 2909 }
2030 } 2910 }
2031 else
2032 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2033 2911
2034 if (w->wd >= 0) 2912 if (w->wd >= 0)
2035 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2913 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2914
2915 /* now re-arm timer, if required */
2916 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2917 ev_timer_again (EV_A_ &w->timer);
2918 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2036} 2919}
2037 2920
2038static void noinline 2921static void noinline
2039infy_del (EV_P_ ev_stat *w) 2922infy_del (EV_P_ ev_stat *w)
2040{ 2923{
… …
2054 2937
2055static void noinline 2938static void noinline
2056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2939infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2057{ 2940{
2058 if (slot < 0) 2941 if (slot < 0)
2059 /* overflow, need to check for all hahs slots */ 2942 /* overflow, need to check for all hash slots */
2060 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2061 infy_wd (EV_A_ slot, wd, ev); 2944 infy_wd (EV_A_ slot, wd, ev);
2062 else 2945 else
2063 { 2946 {
2064 WL w_; 2947 WL w_;
… …
2070 2953
2071 if (w->wd == wd || wd == -1) 2954 if (w->wd == wd || wd == -1)
2072 { 2955 {
2073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2956 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2074 { 2957 {
2958 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2075 w->wd = -1; 2959 w->wd = -1;
2076 infy_add (EV_A_ w); /* re-add, no matter what */ 2960 infy_add (EV_A_ w); /* re-add, no matter what */
2077 } 2961 }
2078 2962
2079 stat_timer_cb (EV_A_ &w->timer, 0); 2963 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2092 2976
2093 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2977 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2094 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2978 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2095} 2979}
2096 2980
2097void inline_size 2981inline_size void
2982check_2625 (EV_P)
2983{
2984 /* kernels < 2.6.25 are borked
2985 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2986 */
2987 struct utsname buf;
2988 int major, minor, micro;
2989
2990 if (uname (&buf))
2991 return;
2992
2993 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2994 return;
2995
2996 if (major < 2
2997 || (major == 2 && minor < 6)
2998 || (major == 2 && minor == 6 && micro < 25))
2999 return;
3000
3001 fs_2625 = 1;
3002}
3003
3004inline_size int
3005infy_newfd (void)
3006{
3007#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3008 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3009 if (fd >= 0)
3010 return fd;
3011#endif
3012 return inotify_init ();
3013}
3014
3015inline_size void
2098infy_init (EV_P) 3016infy_init (EV_P)
2099{ 3017{
2100 if (fs_fd != -2) 3018 if (fs_fd != -2)
2101 return; 3019 return;
2102 3020
3021 fs_fd = -1;
3022
3023 check_2625 (EV_A);
3024
2103 fs_fd = inotify_init (); 3025 fs_fd = infy_newfd ();
2104 3026
2105 if (fs_fd >= 0) 3027 if (fs_fd >= 0)
2106 { 3028 {
3029 fd_intern (fs_fd);
2107 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3030 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2108 ev_set_priority (&fs_w, EV_MAXPRI); 3031 ev_set_priority (&fs_w, EV_MAXPRI);
2109 ev_io_start (EV_A_ &fs_w); 3032 ev_io_start (EV_A_ &fs_w);
3033 ev_unref (EV_A);
2110 } 3034 }
2111} 3035}
2112 3036
2113void inline_size 3037inline_size void
2114infy_fork (EV_P) 3038infy_fork (EV_P)
2115{ 3039{
2116 int slot; 3040 int slot;
2117 3041
2118 if (fs_fd < 0) 3042 if (fs_fd < 0)
2119 return; 3043 return;
2120 3044
3045 ev_ref (EV_A);
3046 ev_io_stop (EV_A_ &fs_w);
2121 close (fs_fd); 3047 close (fs_fd);
2122 fs_fd = inotify_init (); 3048 fs_fd = infy_newfd ();
3049
3050 if (fs_fd >= 0)
3051 {
3052 fd_intern (fs_fd);
3053 ev_io_set (&fs_w, fs_fd, EV_READ);
3054 ev_io_start (EV_A_ &fs_w);
3055 ev_unref (EV_A);
3056 }
2123 3057
2124 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3058 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2125 { 3059 {
2126 WL w_ = fs_hash [slot].head; 3060 WL w_ = fs_hash [slot].head;
2127 fs_hash [slot].head = 0; 3061 fs_hash [slot].head = 0;
… …
2134 w->wd = -1; 3068 w->wd = -1;
2135 3069
2136 if (fs_fd >= 0) 3070 if (fs_fd >= 0)
2137 infy_add (EV_A_ w); /* re-add, no matter what */ 3071 infy_add (EV_A_ w); /* re-add, no matter what */
2138 else 3072 else
3073 {
3074 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3075 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2139 ev_timer_start (EV_A_ &w->timer); 3076 ev_timer_again (EV_A_ &w->timer);
3077 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3078 }
2140 } 3079 }
2141
2142 } 3080 }
2143} 3081}
2144 3082
3083#endif
3084
3085#ifdef _WIN32
3086# define EV_LSTAT(p,b) _stati64 (p, b)
3087#else
3088# define EV_LSTAT(p,b) lstat (p, b)
2145#endif 3089#endif
2146 3090
2147void 3091void
2148ev_stat_stat (EV_P_ ev_stat *w) 3092ev_stat_stat (EV_P_ ev_stat *w)
2149{ 3093{
… …
2176 || w->prev.st_atime != w->attr.st_atime 3120 || w->prev.st_atime != w->attr.st_atime
2177 || w->prev.st_mtime != w->attr.st_mtime 3121 || w->prev.st_mtime != w->attr.st_mtime
2178 || w->prev.st_ctime != w->attr.st_ctime 3122 || w->prev.st_ctime != w->attr.st_ctime
2179 ) { 3123 ) {
2180 #if EV_USE_INOTIFY 3124 #if EV_USE_INOTIFY
3125 if (fs_fd >= 0)
3126 {
2181 infy_del (EV_A_ w); 3127 infy_del (EV_A_ w);
2182 infy_add (EV_A_ w); 3128 infy_add (EV_A_ w);
2183 ev_stat_stat (EV_A_ w); /* avoid race... */ 3129 ev_stat_stat (EV_A_ w); /* avoid race... */
3130 }
2184 #endif 3131 #endif
2185 3132
2186 ev_feed_event (EV_A_ w, EV_STAT); 3133 ev_feed_event (EV_A_ w, EV_STAT);
2187 } 3134 }
2188} 3135}
… …
2191ev_stat_start (EV_P_ ev_stat *w) 3138ev_stat_start (EV_P_ ev_stat *w)
2192{ 3139{
2193 if (expect_false (ev_is_active (w))) 3140 if (expect_false (ev_is_active (w)))
2194 return; 3141 return;
2195 3142
2196 /* since we use memcmp, we need to clear any padding data etc. */
2197 memset (&w->prev, 0, sizeof (ev_statdata));
2198 memset (&w->attr, 0, sizeof (ev_statdata));
2199
2200 ev_stat_stat (EV_A_ w); 3143 ev_stat_stat (EV_A_ w);
2201 3144
3145 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2202 if (w->interval < MIN_STAT_INTERVAL) 3146 w->interval = MIN_STAT_INTERVAL;
2203 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2204 3147
2205 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3148 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2206 ev_set_priority (&w->timer, ev_priority (w)); 3149 ev_set_priority (&w->timer, ev_priority (w));
2207 3150
2208#if EV_USE_INOTIFY 3151#if EV_USE_INOTIFY
2209 infy_init (EV_A); 3152 infy_init (EV_A);
2210 3153
2211 if (fs_fd >= 0) 3154 if (fs_fd >= 0)
2212 infy_add (EV_A_ w); 3155 infy_add (EV_A_ w);
2213 else 3156 else
2214#endif 3157#endif
3158 {
2215 ev_timer_start (EV_A_ &w->timer); 3159 ev_timer_again (EV_A_ &w->timer);
3160 ev_unref (EV_A);
3161 }
2216 3162
2217 ev_start (EV_A_ (W)w, 1); 3163 ev_start (EV_A_ (W)w, 1);
3164
3165 EV_FREQUENT_CHECK;
2218} 3166}
2219 3167
2220void 3168void
2221ev_stat_stop (EV_P_ ev_stat *w) 3169ev_stat_stop (EV_P_ ev_stat *w)
2222{ 3170{
2223 clear_pending (EV_A_ (W)w); 3171 clear_pending (EV_A_ (W)w);
2224 if (expect_false (!ev_is_active (w))) 3172 if (expect_false (!ev_is_active (w)))
2225 return; 3173 return;
2226 3174
3175 EV_FREQUENT_CHECK;
3176
2227#if EV_USE_INOTIFY 3177#if EV_USE_INOTIFY
2228 infy_del (EV_A_ w); 3178 infy_del (EV_A_ w);
2229#endif 3179#endif
3180
3181 if (ev_is_active (&w->timer))
3182 {
3183 ev_ref (EV_A);
2230 ev_timer_stop (EV_A_ &w->timer); 3184 ev_timer_stop (EV_A_ &w->timer);
3185 }
2231 3186
2232 ev_stop (EV_A_ (W)w); 3187 ev_stop (EV_A_ (W)w);
3188
3189 EV_FREQUENT_CHECK;
2233} 3190}
2234#endif 3191#endif
2235 3192
2236#if EV_IDLE_ENABLE 3193#if EV_IDLE_ENABLE
2237void 3194void
… …
2239{ 3196{
2240 if (expect_false (ev_is_active (w))) 3197 if (expect_false (ev_is_active (w)))
2241 return; 3198 return;
2242 3199
2243 pri_adjust (EV_A_ (W)w); 3200 pri_adjust (EV_A_ (W)w);
3201
3202 EV_FREQUENT_CHECK;
2244 3203
2245 { 3204 {
2246 int active = ++idlecnt [ABSPRI (w)]; 3205 int active = ++idlecnt [ABSPRI (w)];
2247 3206
2248 ++idleall; 3207 ++idleall;
2249 ev_start (EV_A_ (W)w, active); 3208 ev_start (EV_A_ (W)w, active);
2250 3209
2251 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3210 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2252 idles [ABSPRI (w)][active - 1] = w; 3211 idles [ABSPRI (w)][active - 1] = w;
2253 } 3212 }
3213
3214 EV_FREQUENT_CHECK;
2254} 3215}
2255 3216
2256void 3217void
2257ev_idle_stop (EV_P_ ev_idle *w) 3218ev_idle_stop (EV_P_ ev_idle *w)
2258{ 3219{
2259 clear_pending (EV_A_ (W)w); 3220 clear_pending (EV_A_ (W)w);
2260 if (expect_false (!ev_is_active (w))) 3221 if (expect_false (!ev_is_active (w)))
2261 return; 3222 return;
2262 3223
3224 EV_FREQUENT_CHECK;
3225
2263 { 3226 {
2264 int active = ((W)w)->active; 3227 int active = ev_active (w);
2265 3228
2266 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3229 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2267 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3230 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2268 3231
2269 ev_stop (EV_A_ (W)w); 3232 ev_stop (EV_A_ (W)w);
2270 --idleall; 3233 --idleall;
2271 } 3234 }
3235
3236 EV_FREQUENT_CHECK;
2272} 3237}
2273#endif 3238#endif
2274 3239
2275void 3240void
2276ev_prepare_start (EV_P_ ev_prepare *w) 3241ev_prepare_start (EV_P_ ev_prepare *w)
2277{ 3242{
2278 if (expect_false (ev_is_active (w))) 3243 if (expect_false (ev_is_active (w)))
2279 return; 3244 return;
3245
3246 EV_FREQUENT_CHECK;
2280 3247
2281 ev_start (EV_A_ (W)w, ++preparecnt); 3248 ev_start (EV_A_ (W)w, ++preparecnt);
2282 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3249 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2283 prepares [preparecnt - 1] = w; 3250 prepares [preparecnt - 1] = w;
3251
3252 EV_FREQUENT_CHECK;
2284} 3253}
2285 3254
2286void 3255void
2287ev_prepare_stop (EV_P_ ev_prepare *w) 3256ev_prepare_stop (EV_P_ ev_prepare *w)
2288{ 3257{
2289 clear_pending (EV_A_ (W)w); 3258 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w))) 3259 if (expect_false (!ev_is_active (w)))
2291 return; 3260 return;
2292 3261
3262 EV_FREQUENT_CHECK;
3263
2293 { 3264 {
2294 int active = ((W)w)->active; 3265 int active = ev_active (w);
3266
2295 prepares [active - 1] = prepares [--preparecnt]; 3267 prepares [active - 1] = prepares [--preparecnt];
2296 ((W)prepares [active - 1])->active = active; 3268 ev_active (prepares [active - 1]) = active;
2297 } 3269 }
2298 3270
2299 ev_stop (EV_A_ (W)w); 3271 ev_stop (EV_A_ (W)w);
3272
3273 EV_FREQUENT_CHECK;
2300} 3274}
2301 3275
2302void 3276void
2303ev_check_start (EV_P_ ev_check *w) 3277ev_check_start (EV_P_ ev_check *w)
2304{ 3278{
2305 if (expect_false (ev_is_active (w))) 3279 if (expect_false (ev_is_active (w)))
2306 return; 3280 return;
3281
3282 EV_FREQUENT_CHECK;
2307 3283
2308 ev_start (EV_A_ (W)w, ++checkcnt); 3284 ev_start (EV_A_ (W)w, ++checkcnt);
2309 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3285 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2310 checks [checkcnt - 1] = w; 3286 checks [checkcnt - 1] = w;
3287
3288 EV_FREQUENT_CHECK;
2311} 3289}
2312 3290
2313void 3291void
2314ev_check_stop (EV_P_ ev_check *w) 3292ev_check_stop (EV_P_ ev_check *w)
2315{ 3293{
2316 clear_pending (EV_A_ (W)w); 3294 clear_pending (EV_A_ (W)w);
2317 if (expect_false (!ev_is_active (w))) 3295 if (expect_false (!ev_is_active (w)))
2318 return; 3296 return;
2319 3297
3298 EV_FREQUENT_CHECK;
3299
2320 { 3300 {
2321 int active = ((W)w)->active; 3301 int active = ev_active (w);
3302
2322 checks [active - 1] = checks [--checkcnt]; 3303 checks [active - 1] = checks [--checkcnt];
2323 ((W)checks [active - 1])->active = active; 3304 ev_active (checks [active - 1]) = active;
2324 } 3305 }
2325 3306
2326 ev_stop (EV_A_ (W)w); 3307 ev_stop (EV_A_ (W)w);
3308
3309 EV_FREQUENT_CHECK;
2327} 3310}
2328 3311
2329#if EV_EMBED_ENABLE 3312#if EV_EMBED_ENABLE
2330void noinline 3313void noinline
2331ev_embed_sweep (EV_P_ ev_embed *w) 3314ev_embed_sweep (EV_P_ ev_embed *w)
… …
2348embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3331embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2349{ 3332{
2350 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3333 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2351 3334
2352 { 3335 {
2353 struct ev_loop *loop = w->other; 3336 EV_P = w->other;
2354 3337
2355 while (fdchangecnt) 3338 while (fdchangecnt)
2356 { 3339 {
2357 fd_reify (EV_A); 3340 fd_reify (EV_A);
2358 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3341 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2359 } 3342 }
2360 } 3343 }
2361} 3344}
2362 3345
3346static void
3347embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3348{
3349 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3350
3351 ev_embed_stop (EV_A_ w);
3352
3353 {
3354 EV_P = w->other;
3355
3356 ev_loop_fork (EV_A);
3357 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3358 }
3359
3360 ev_embed_start (EV_A_ w);
3361}
3362
2363#if 0 3363#if 0
2364static void 3364static void
2365embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3365embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2366{ 3366{
2367 ev_idle_stop (EV_A_ idle); 3367 ev_idle_stop (EV_A_ idle);
… …
2373{ 3373{
2374 if (expect_false (ev_is_active (w))) 3374 if (expect_false (ev_is_active (w)))
2375 return; 3375 return;
2376 3376
2377 { 3377 {
2378 struct ev_loop *loop = w->other; 3378 EV_P = w->other;
2379 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3379 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2380 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3380 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2381 } 3381 }
3382
3383 EV_FREQUENT_CHECK;
2382 3384
2383 ev_set_priority (&w->io, ev_priority (w)); 3385 ev_set_priority (&w->io, ev_priority (w));
2384 ev_io_start (EV_A_ &w->io); 3386 ev_io_start (EV_A_ &w->io);
2385 3387
2386 ev_prepare_init (&w->prepare, embed_prepare_cb); 3388 ev_prepare_init (&w->prepare, embed_prepare_cb);
2387 ev_set_priority (&w->prepare, EV_MINPRI); 3389 ev_set_priority (&w->prepare, EV_MINPRI);
2388 ev_prepare_start (EV_A_ &w->prepare); 3390 ev_prepare_start (EV_A_ &w->prepare);
2389 3391
3392 ev_fork_init (&w->fork, embed_fork_cb);
3393 ev_fork_start (EV_A_ &w->fork);
3394
2390 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3395 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2391 3396
2392 ev_start (EV_A_ (W)w, 1); 3397 ev_start (EV_A_ (W)w, 1);
3398
3399 EV_FREQUENT_CHECK;
2393} 3400}
2394 3401
2395void 3402void
2396ev_embed_stop (EV_P_ ev_embed *w) 3403ev_embed_stop (EV_P_ ev_embed *w)
2397{ 3404{
2398 clear_pending (EV_A_ (W)w); 3405 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w))) 3406 if (expect_false (!ev_is_active (w)))
2400 return; 3407 return;
2401 3408
3409 EV_FREQUENT_CHECK;
3410
2402 ev_io_stop (EV_A_ &w->io); 3411 ev_io_stop (EV_A_ &w->io);
2403 ev_prepare_stop (EV_A_ &w->prepare); 3412 ev_prepare_stop (EV_A_ &w->prepare);
3413 ev_fork_stop (EV_A_ &w->fork);
2404 3414
2405 ev_stop (EV_A_ (W)w); 3415 EV_FREQUENT_CHECK;
2406} 3416}
2407#endif 3417#endif
2408 3418
2409#if EV_FORK_ENABLE 3419#if EV_FORK_ENABLE
2410void 3420void
2411ev_fork_start (EV_P_ ev_fork *w) 3421ev_fork_start (EV_P_ ev_fork *w)
2412{ 3422{
2413 if (expect_false (ev_is_active (w))) 3423 if (expect_false (ev_is_active (w)))
2414 return; 3424 return;
3425
3426 EV_FREQUENT_CHECK;
2415 3427
2416 ev_start (EV_A_ (W)w, ++forkcnt); 3428 ev_start (EV_A_ (W)w, ++forkcnt);
2417 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3429 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2418 forks [forkcnt - 1] = w; 3430 forks [forkcnt - 1] = w;
3431
3432 EV_FREQUENT_CHECK;
2419} 3433}
2420 3434
2421void 3435void
2422ev_fork_stop (EV_P_ ev_fork *w) 3436ev_fork_stop (EV_P_ ev_fork *w)
2423{ 3437{
2424 clear_pending (EV_A_ (W)w); 3438 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 3439 if (expect_false (!ev_is_active (w)))
2426 return; 3440 return;
2427 3441
3442 EV_FREQUENT_CHECK;
3443
2428 { 3444 {
2429 int active = ((W)w)->active; 3445 int active = ev_active (w);
3446
2430 forks [active - 1] = forks [--forkcnt]; 3447 forks [active - 1] = forks [--forkcnt];
2431 ((W)forks [active - 1])->active = active; 3448 ev_active (forks [active - 1]) = active;
2432 } 3449 }
2433 3450
2434 ev_stop (EV_A_ (W)w); 3451 ev_stop (EV_A_ (W)w);
3452
3453 EV_FREQUENT_CHECK;
2435} 3454}
2436#endif 3455#endif
2437 3456
2438#if EV_ASYNC_ENABLE 3457#if EV_ASYNC_ENABLE
2439void 3458void
… …
2441{ 3460{
2442 if (expect_false (ev_is_active (w))) 3461 if (expect_false (ev_is_active (w)))
2443 return; 3462 return;
2444 3463
2445 evpipe_init (EV_A); 3464 evpipe_init (EV_A);
3465
3466 EV_FREQUENT_CHECK;
2446 3467
2447 ev_start (EV_A_ (W)w, ++asynccnt); 3468 ev_start (EV_A_ (W)w, ++asynccnt);
2448 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3469 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2449 asyncs [asynccnt - 1] = w; 3470 asyncs [asynccnt - 1] = w;
3471
3472 EV_FREQUENT_CHECK;
2450} 3473}
2451 3474
2452void 3475void
2453ev_async_stop (EV_P_ ev_async *w) 3476ev_async_stop (EV_P_ ev_async *w)
2454{ 3477{
2455 clear_pending (EV_A_ (W)w); 3478 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3479 if (expect_false (!ev_is_active (w)))
2457 return; 3480 return;
2458 3481
3482 EV_FREQUENT_CHECK;
3483
2459 { 3484 {
2460 int active = ((W)w)->active; 3485 int active = ev_active (w);
3486
2461 asyncs [active - 1] = asyncs [--asynccnt]; 3487 asyncs [active - 1] = asyncs [--asynccnt];
2462 ((W)asyncs [active - 1])->active = active; 3488 ev_active (asyncs [active - 1]) = active;
2463 } 3489 }
2464 3490
2465 ev_stop (EV_A_ (W)w); 3491 ev_stop (EV_A_ (W)w);
3492
3493 EV_FREQUENT_CHECK;
2466} 3494}
2467 3495
2468void 3496void
2469ev_async_send (EV_P_ ev_async *w) 3497ev_async_send (EV_P_ ev_async *w)
2470{ 3498{
2471 w->sent = 1; 3499 w->sent = 1;
2472 evpipe_write (EV_A_ 0, 1); 3500 evpipe_write (EV_A_ &async_pending);
2473} 3501}
2474#endif 3502#endif
2475 3503
2476/*****************************************************************************/ 3504/*****************************************************************************/
2477 3505
… …
2487once_cb (EV_P_ struct ev_once *once, int revents) 3515once_cb (EV_P_ struct ev_once *once, int revents)
2488{ 3516{
2489 void (*cb)(int revents, void *arg) = once->cb; 3517 void (*cb)(int revents, void *arg) = once->cb;
2490 void *arg = once->arg; 3518 void *arg = once->arg;
2491 3519
2492 ev_io_stop (EV_A_ &once->io); 3520 ev_io_stop (EV_A_ &once->io);
2493 ev_timer_stop (EV_A_ &once->to); 3521 ev_timer_stop (EV_A_ &once->to);
2494 ev_free (once); 3522 ev_free (once);
2495 3523
2496 cb (revents, arg); 3524 cb (revents, arg);
2497} 3525}
2498 3526
2499static void 3527static void
2500once_cb_io (EV_P_ ev_io *w, int revents) 3528once_cb_io (EV_P_ ev_io *w, int revents)
2501{ 3529{
2502 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3530 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3531
3532 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2503} 3533}
2504 3534
2505static void 3535static void
2506once_cb_to (EV_P_ ev_timer *w, int revents) 3536once_cb_to (EV_P_ ev_timer *w, int revents)
2507{ 3537{
2508 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3538 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3539
3540 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2509} 3541}
2510 3542
2511void 3543void
2512ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3544ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2513{ 3545{
… …
2535 ev_timer_set (&once->to, timeout, 0.); 3567 ev_timer_set (&once->to, timeout, 0.);
2536 ev_timer_start (EV_A_ &once->to); 3568 ev_timer_start (EV_A_ &once->to);
2537 } 3569 }
2538} 3570}
2539 3571
3572/*****************************************************************************/
3573
3574#if EV_WALK_ENABLE
3575void
3576ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3577{
3578 int i, j;
3579 ev_watcher_list *wl, *wn;
3580
3581 if (types & (EV_IO | EV_EMBED))
3582 for (i = 0; i < anfdmax; ++i)
3583 for (wl = anfds [i].head; wl; )
3584 {
3585 wn = wl->next;
3586
3587#if EV_EMBED_ENABLE
3588 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3589 {
3590 if (types & EV_EMBED)
3591 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3592 }
3593 else
3594#endif
3595#if EV_USE_INOTIFY
3596 if (ev_cb ((ev_io *)wl) == infy_cb)
3597 ;
3598 else
3599#endif
3600 if ((ev_io *)wl != &pipe_w)
3601 if (types & EV_IO)
3602 cb (EV_A_ EV_IO, wl);
3603
3604 wl = wn;
3605 }
3606
3607 if (types & (EV_TIMER | EV_STAT))
3608 for (i = timercnt + HEAP0; i-- > HEAP0; )
3609#if EV_STAT_ENABLE
3610 /*TODO: timer is not always active*/
3611 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3612 {
3613 if (types & EV_STAT)
3614 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3615 }
3616 else
3617#endif
3618 if (types & EV_TIMER)
3619 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3620
3621#if EV_PERIODIC_ENABLE
3622 if (types & EV_PERIODIC)
3623 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3624 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3625#endif
3626
3627#if EV_IDLE_ENABLE
3628 if (types & EV_IDLE)
3629 for (j = NUMPRI; i--; )
3630 for (i = idlecnt [j]; i--; )
3631 cb (EV_A_ EV_IDLE, idles [j][i]);
3632#endif
3633
3634#if EV_FORK_ENABLE
3635 if (types & EV_FORK)
3636 for (i = forkcnt; i--; )
3637 if (ev_cb (forks [i]) != embed_fork_cb)
3638 cb (EV_A_ EV_FORK, forks [i]);
3639#endif
3640
3641#if EV_ASYNC_ENABLE
3642 if (types & EV_ASYNC)
3643 for (i = asynccnt; i--; )
3644 cb (EV_A_ EV_ASYNC, asyncs [i]);
3645#endif
3646
3647 if (types & EV_PREPARE)
3648 for (i = preparecnt; i--; )
3649#if EV_EMBED_ENABLE
3650 if (ev_cb (prepares [i]) != embed_prepare_cb)
3651#endif
3652 cb (EV_A_ EV_PREPARE, prepares [i]);
3653
3654 if (types & EV_CHECK)
3655 for (i = checkcnt; i--; )
3656 cb (EV_A_ EV_CHECK, checks [i]);
3657
3658 if (types & EV_SIGNAL)
3659 for (i = 0; i < EV_NSIG - 1; ++i)
3660 for (wl = signals [i].head; wl; )
3661 {
3662 wn = wl->next;
3663 cb (EV_A_ EV_SIGNAL, wl);
3664 wl = wn;
3665 }
3666
3667 if (types & EV_CHILD)
3668 for (i = EV_PID_HASHSIZE; i--; )
3669 for (wl = childs [i]; wl; )
3670 {
3671 wn = wl->next;
3672 cb (EV_A_ EV_CHILD, wl);
3673 wl = wn;
3674 }
3675/* EV_STAT 0x00001000 /* stat data changed */
3676/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3677}
3678#endif
3679
2540#if EV_MULTIPLICITY 3680#if EV_MULTIPLICITY
2541 #include "ev_wrap.h" 3681 #include "ev_wrap.h"
2542#endif 3682#endif
2543 3683
2544#ifdef __cplusplus 3684#ifdef __cplusplus

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