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Comparing libev/ev.c (file contents):
Revision 1.200 by root, Wed Dec 26 08:06:09 2007 UTC vs.
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 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
… …
95# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
96# endif 111# endif
97# endif 112# endif
98 113
99# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
101# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
102# else 117# else
103# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
104# endif 119# endif
105# endif 120# 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>
158#include <string.h>
127#include <fcntl.h> 159#include <fcntl.h>
128#include <stddef.h> 160#include <stddef.h>
129 161
130#include <stdio.h> 162#include <stdio.h>
131 163
… …
145#ifndef _WIN32 177#ifndef _WIN32
146# include <sys/time.h> 178# include <sys/time.h>
147# include <sys/wait.h> 179# include <sys/wait.h>
148# include <unistd.h> 180# include <unistd.h>
149#else 181#else
182# include <io.h>
150# define WIN32_LEAN_AND_MEAN 183# define WIN32_LEAN_AND_MEAN
151# include <windows.h> 184# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET 185# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 186# define EV_SELECT_IS_WINSOCKET 1
154# endif 187# endif
155#endif 188#endif
156 189
157/**/ 190/* this block tries to deduce configuration from header-defined symbols and defaults */
191
192/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG)
194/* use what's provided */
195#elif defined (NSIG)
196# define EV_NSIG (NSIG)
197#elif defined(_NSIG)
198# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX)
200# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX)
202# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX)
204# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else
214# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */
216# define EV_NSIG 65
217#endif
218
219#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1
222# else
223# define EV_USE_CLOCK_SYSCALL 0
224# endif
225#endif
158 226
159#ifndef EV_USE_MONOTONIC 227#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1
230# else
160# define EV_USE_MONOTONIC 0 231# define EV_USE_MONOTONIC 0
232# endif
161#endif 233#endif
162 234
163#ifndef EV_USE_REALTIME 235#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0 236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165#endif 237#endif
166 238
167#ifndef EV_USE_NANOSLEEP 239#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1
242# else
168# define EV_USE_NANOSLEEP 0 243# define EV_USE_NANOSLEEP 0
244# endif
169#endif 245#endif
170 246
171#ifndef EV_USE_SELECT 247#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1 248# define EV_USE_SELECT 1
173#endif 249#endif
… …
179# define EV_USE_POLL 1 255# define EV_USE_POLL 1
180# endif 256# endif
181#endif 257#endif
182 258
183#ifndef EV_USE_EPOLL 259#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1
262# else
184# define EV_USE_EPOLL 0 263# define EV_USE_EPOLL 0
264# endif
185#endif 265#endif
186 266
187#ifndef EV_USE_KQUEUE 267#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 268# define EV_USE_KQUEUE 0
189#endif 269#endif
… …
191#ifndef EV_USE_PORT 271#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 272# define EV_USE_PORT 0
193#endif 273#endif
194 274
195#ifndef EV_USE_INOTIFY 275#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1
278# else
196# define EV_USE_INOTIFY 0 279# define EV_USE_INOTIFY 0
280# endif
197#endif 281#endif
198 282
199#ifndef EV_PID_HASHSIZE 283#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 284# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1 285# define EV_PID_HASHSIZE 1
… …
210# else 294# else
211# define EV_INOTIFY_HASHSIZE 16 295# define EV_INOTIFY_HASHSIZE 16
212# endif 296# endif
213#endif 297#endif
214 298
215/**/ 299#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1
302# else
303# define EV_USE_EVENTFD 0
304# endif
305#endif
306
307#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1
310# else
311# define EV_USE_SIGNALFD 0
312# endif
313#endif
314
315#if 0 /* debugging */
316# define EV_VERIFY 3
317# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1
319#endif
320
321#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL
323#endif
324
325#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL
327#endif
328
329#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL
331#endif
332
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h>
337# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1
341# else
342# undef EV_USE_CLOCK_SYSCALL
343# define EV_USE_CLOCK_SYSCALL 0
344# endif
345#endif
346
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348
349#ifdef _AIX
350/* AIX has a completely broken poll.h header */
351# undef EV_USE_POLL
352# define EV_USE_POLL 0
353#endif
216 354
217#ifndef CLOCK_MONOTONIC 355#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 356# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 357# define EV_USE_MONOTONIC 0
220#endif 358#endif
… …
234# include <sys/select.h> 372# include <sys/select.h>
235# endif 373# endif
236#endif 374#endif
237 375
238#if EV_USE_INOTIFY 376#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h>
239# include <sys/inotify.h> 379# include <sys/inotify.h>
380/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
381# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY
383# define EV_USE_INOTIFY 0
384# endif
240#endif 385#endif
241 386
242#if EV_SELECT_IS_WINSOCKET 387#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 388# include <winsock.h>
244#endif 389#endif
245 390
391#if EV_USE_EVENTFD
392/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
393# include <stdint.h>
394# ifndef EFD_NONBLOCK
395# define EFD_NONBLOCK O_NONBLOCK
396# endif
397# ifndef EFD_CLOEXEC
398# ifdef O_CLOEXEC
399# define EFD_CLOEXEC O_CLOEXEC
400# else
401# define EFD_CLOEXEC 02000000
402# endif
403# endif
404# ifdef __cplusplus
405extern "C" {
406# endif
407int eventfd (unsigned int initval, int flags);
408# ifdef __cplusplus
409}
410# endif
411#endif
412
413#if EV_USE_SIGNALFD
414/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
415# include <stdint.h>
416# ifndef SFD_NONBLOCK
417# define SFD_NONBLOCK O_NONBLOCK
418# endif
419# ifndef SFD_CLOEXEC
420# ifdef O_CLOEXEC
421# define SFD_CLOEXEC O_CLOEXEC
422# else
423# define SFD_CLOEXEC 02000000
424# endif
425# endif
426# ifdef __cplusplus
427extern "C" {
428# endif
429int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
436# ifdef __cplusplus
437}
438# endif
439#endif
440
441
246/**/ 442/**/
443
444#if EV_VERIFY >= 3
445# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
446#else
447# define EV_FREQUENT_CHECK do { } while (0)
448#endif
247 449
248/* 450/*
249 * This is used to avoid floating point rounding problems. 451 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics 452 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding 453 * to ensure progress, time-wise, even when rounding
… …
255 */ 457 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257 459
258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 460#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) */ 461#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 */
261 462
262#if __GNUC__ >= 4 463#if __GNUC__ >= 4
263# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
265#else 466#else
266# define expect(expr,value) (expr) 467# define expect(expr,value) (expr)
267# define noinline 468# define noinline
268# if __STDC_VERSION__ < 199901L 469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
269# define inline 470# define inline
270# endif 471# endif
271#endif 472#endif
272 473
273#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
… …
278# define inline_speed static noinline 479# define inline_speed static noinline
279#else 480#else
280# define inline_speed static inline 481# define inline_speed static inline
281#endif 482#endif
282 483
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
488#else
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
285 491
286#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
288 494
289typedef ev_watcher *W; 495typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 496typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
292 498
293#if EV_USE_MONOTONIC 499#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at
501
502#if EV_USE_REALTIME
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 503/* 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 */ 504/* giving it a reasonably high chance of working on typical architetcures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif
507
508#if EV_USE_MONOTONIC
296static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
510#endif
511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
297#endif 520#endif
298 521
299#ifdef _WIN32 522#ifdef _WIN32
300# include "ev_win32.c" 523# include "ev_win32.c"
301#endif 524#endif
… …
309{ 532{
310 syserr_cb = cb; 533 syserr_cb = cb;
311} 534}
312 535
313static void noinline 536static void noinline
314syserr (const char *msg) 537ev_syserr (const char *msg)
315{ 538{
316 if (!msg) 539 if (!msg)
317 msg = "(libev) system error"; 540 msg = "(libev) system error";
318 541
319 if (syserr_cb) 542 if (syserr_cb)
… …
323 perror (msg); 546 perror (msg);
324 abort (); 547 abort ();
325 } 548 }
326} 549}
327 550
551static void *
552ev_realloc_emul (void *ptr, long size)
553{
554 /* some systems, notably openbsd and darwin, fail to properly
555 * implement realloc (x, 0) (as required by both ansi c-98 and
556 * the single unix specification, so work around them here.
557 */
558
559 if (size)
560 return realloc (ptr, size);
561
562 free (ptr);
563 return 0;
564}
565
328static void *(*alloc)(void *ptr, long size); 566static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 567
330void 568void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 569ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 570{
333 alloc = cb; 571 alloc = cb;
334} 572}
335 573
336inline_speed void * 574inline_speed void *
337ev_realloc (void *ptr, long size) 575ev_realloc (void *ptr, long size)
338{ 576{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 577 ptr = alloc (ptr, size);
340 578
341 if (!ptr && size) 579 if (!ptr && size)
342 { 580 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 581 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort (); 582 abort ();
… …
350#define ev_malloc(size) ev_realloc (0, (size)) 588#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0) 589#define ev_free(ptr) ev_realloc ((ptr), 0)
352 590
353/*****************************************************************************/ 591/*****************************************************************************/
354 592
593/* set in reify when reification needed */
594#define EV_ANFD_REIFY 1
595
596/* file descriptor info structure */
355typedef struct 597typedef struct
356{ 598{
357 WL head; 599 WL head;
358 unsigned char events; 600 unsigned char events; /* the events watched for */
601 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
602 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359 unsigned char reify; 603 unsigned char unused;
604#if EV_USE_EPOLL
605 unsigned int egen; /* generation counter to counter epoll bugs */
606#endif
360#if EV_SELECT_IS_WINSOCKET 607#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle; 608 SOCKET handle;
362#endif 609#endif
363} ANFD; 610} ANFD;
364 611
612/* stores the pending event set for a given watcher */
365typedef struct 613typedef struct
366{ 614{
367 W w; 615 W w;
368 int events; 616 int events; /* the pending event set for the given watcher */
369} ANPENDING; 617} ANPENDING;
370 618
371#if EV_USE_INOTIFY 619#if EV_USE_INOTIFY
620/* hash table entry per inotify-id */
372typedef struct 621typedef struct
373{ 622{
374 WL head; 623 WL head;
375} ANFS; 624} ANFS;
625#endif
626
627/* Heap Entry */
628#if EV_HEAP_CACHE_AT
629 /* a heap element */
630 typedef struct {
631 ev_tstamp at;
632 WT w;
633 } ANHE;
634
635 #define ANHE_w(he) (he).w /* access watcher, read-write */
636 #define ANHE_at(he) (he).at /* access cached at, read-only */
637 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
638#else
639 /* a heap element */
640 typedef WT ANHE;
641
642 #define ANHE_w(he) (he)
643 #define ANHE_at(he) (he)->at
644 #define ANHE_at_cache(he)
376#endif 645#endif
377 646
378#if EV_MULTIPLICITY 647#if EV_MULTIPLICITY
379 648
380 struct ev_loop 649 struct ev_loop
… …
399 668
400 static int ev_default_loop_ptr; 669 static int ev_default_loop_ptr;
401 670
402#endif 671#endif
403 672
673#if EV_MINIMAL < 2
674# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
675# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
676# define EV_INVOKE_PENDING invoke_cb (EV_A)
677#else
678# define EV_RELEASE_CB (void)0
679# define EV_ACQUIRE_CB (void)0
680# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
681#endif
682
683#define EVUNLOOP_RECURSE 0x80
684
404/*****************************************************************************/ 685/*****************************************************************************/
405 686
687#ifndef EV_HAVE_EV_TIME
406ev_tstamp 688ev_tstamp
407ev_time (void) 689ev_time (void)
408{ 690{
409#if EV_USE_REALTIME 691#if EV_USE_REALTIME
692 if (expect_true (have_realtime))
693 {
410 struct timespec ts; 694 struct timespec ts;
411 clock_gettime (CLOCK_REALTIME, &ts); 695 clock_gettime (CLOCK_REALTIME, &ts);
412 return ts.tv_sec + ts.tv_nsec * 1e-9; 696 return ts.tv_sec + ts.tv_nsec * 1e-9;
413#else 697 }
698#endif
699
414 struct timeval tv; 700 struct timeval tv;
415 gettimeofday (&tv, 0); 701 gettimeofday (&tv, 0);
416 return tv.tv_sec + tv.tv_usec * 1e-6; 702 return tv.tv_sec + tv.tv_usec * 1e-6;
417#endif
418} 703}
704#endif
419 705
420ev_tstamp inline_size 706inline_size ev_tstamp
421get_clock (void) 707get_clock (void)
422{ 708{
423#if EV_USE_MONOTONIC 709#if EV_USE_MONOTONIC
424 if (expect_true (have_monotonic)) 710 if (expect_true (have_monotonic))
425 { 711 {
… …
451 ts.tv_sec = (time_t)delay; 737 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 738 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453 739
454 nanosleep (&ts, 0); 740 nanosleep (&ts, 0);
455#elif defined(_WIN32) 741#elif defined(_WIN32)
456 Sleep (delay * 1e3); 742 Sleep ((unsigned long)(delay * 1e3));
457#else 743#else
458 struct timeval tv; 744 struct timeval tv;
459 745
460 tv.tv_sec = (time_t)delay; 746 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 747 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462 748
749 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
750 /* something not guaranteed by newer posix versions, but guaranteed */
751 /* by older ones */
463 select (0, 0, 0, 0, &tv); 752 select (0, 0, 0, 0, &tv);
464#endif 753#endif
465 } 754 }
466} 755}
467 756
468/*****************************************************************************/ 757/*****************************************************************************/
469 758
470int inline_size 759#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
760
761/* find a suitable new size for the given array, */
762/* hopefully by rounding to a ncie-to-malloc size */
763inline_size int
471array_nextsize (int elem, int cur, int cnt) 764array_nextsize (int elem, int cur, int cnt)
472{ 765{
473 int ncur = cur + 1; 766 int ncur = cur + 1;
474 767
475 do 768 do
476 ncur <<= 1; 769 ncur <<= 1;
477 while (cnt > ncur); 770 while (cnt > ncur);
478 771
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 772 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 773 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 774 {
482 ncur *= elem; 775 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 776 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 777 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 778 ncur /= elem;
486 } 779 }
487 780
488 return ncur; 781 return ncur;
… …
492array_realloc (int elem, void *base, int *cur, int cnt) 785array_realloc (int elem, void *base, int *cur, int cnt)
493{ 786{
494 *cur = array_nextsize (elem, *cur, cnt); 787 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur); 788 return ev_realloc (base, elem * *cur);
496} 789}
790
791#define array_init_zero(base,count) \
792 memset ((void *)(base), 0, sizeof (*(base)) * (count))
497 793
498#define array_needsize(type,base,cur,cnt,init) \ 794#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \ 795 if (expect_false ((cnt) > (cur))) \
500 { \ 796 { \
501 int ocur_ = (cur); \ 797 int ocur_ = (cur); \
… …
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 809 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 } 810 }
515#endif 811#endif
516 812
517#define array_free(stem, idx) \ 813#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 814 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519 815
520/*****************************************************************************/ 816/*****************************************************************************/
817
818/* dummy callback for pending events */
819static void noinline
820pendingcb (EV_P_ ev_prepare *w, int revents)
821{
822}
521 823
522void noinline 824void noinline
523ev_feed_event (EV_P_ void *w, int revents) 825ev_feed_event (EV_P_ void *w, int revents)
524{ 826{
525 W w_ = (W)w; 827 W w_ = (W)w;
… …
534 pendings [pri][w_->pending - 1].w = w_; 836 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents; 837 pendings [pri][w_->pending - 1].events = revents;
536 } 838 }
537} 839}
538 840
539void inline_speed 841inline_speed void
842feed_reverse (EV_P_ W w)
843{
844 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
845 rfeeds [rfeedcnt++] = w;
846}
847
848inline_size void
849feed_reverse_done (EV_P_ int revents)
850{
851 do
852 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
853 while (rfeedcnt);
854}
855
856inline_speed void
540queue_events (EV_P_ W *events, int eventcnt, int type) 857queue_events (EV_P_ W *events, int eventcnt, int type)
541{ 858{
542 int i; 859 int i;
543 860
544 for (i = 0; i < eventcnt; ++i) 861 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type); 862 ev_feed_event (EV_A_ events [i], type);
546} 863}
547 864
548/*****************************************************************************/ 865/*****************************************************************************/
549 866
550void inline_size 867inline_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) 868fd_event_nc (EV_P_ int fd, int revents)
565{ 869{
566 ANFD *anfd = anfds + fd; 870 ANFD *anfd = anfds + fd;
567 ev_io *w; 871 ev_io *w;
568 872
569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 873 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
573 if (ev) 877 if (ev)
574 ev_feed_event (EV_A_ (W)w, ev); 878 ev_feed_event (EV_A_ (W)w, ev);
575 } 879 }
576} 880}
577 881
882/* do not submit kernel events for fds that have reify set */
883/* because that means they changed while we were polling for new events */
884inline_speed void
885fd_event (EV_P_ int fd, int revents)
886{
887 ANFD *anfd = anfds + fd;
888
889 if (expect_true (!anfd->reify))
890 fd_event_nc (EV_A_ fd, revents);
891}
892
578void 893void
579ev_feed_fd_event (EV_P_ int fd, int revents) 894ev_feed_fd_event (EV_P_ int fd, int revents)
580{ 895{
581 if (fd >= 0 && fd < anfdmax) 896 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents); 897 fd_event_nc (EV_A_ fd, revents);
583} 898}
584 899
585void inline_size 900/* make sure the external fd watch events are in-sync */
901/* with the kernel/libev internal state */
902inline_size void
586fd_reify (EV_P) 903fd_reify (EV_P)
587{ 904{
588 int i; 905 int i;
589 906
590 for (i = 0; i < fdchangecnt; ++i) 907 for (i = 0; i < fdchangecnt; ++i)
… …
599 events |= (unsigned char)w->events; 916 events |= (unsigned char)w->events;
600 917
601#if EV_SELECT_IS_WINSOCKET 918#if EV_SELECT_IS_WINSOCKET
602 if (events) 919 if (events)
603 { 920 {
604 unsigned long argp; 921 unsigned long arg;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 922 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)); 923 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
611 } 924 }
612#endif 925#endif
613 926
614 { 927 {
615 unsigned char o_events = anfd->events; 928 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify; 929 unsigned char o_reify = anfd->reify;
617 930
618 anfd->reify = 0; 931 anfd->reify = 0;
619 anfd->events = events; 932 anfd->events = events;
620 933
621 if (o_events != events || o_reify & EV_IOFDSET) 934 if (o_events != events || o_reify & EV__IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events); 935 backend_modify (EV_A_ fd, o_events, events);
623 } 936 }
624 } 937 }
625 938
626 fdchangecnt = 0; 939 fdchangecnt = 0;
627} 940}
628 941
629void inline_size 942/* something about the given fd changed */
943inline_size void
630fd_change (EV_P_ int fd, int flags) 944fd_change (EV_P_ int fd, int flags)
631{ 945{
632 unsigned char reify = anfds [fd].reify; 946 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags; 947 anfds [fd].reify |= flags;
634 948
… …
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 952 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd; 953 fdchanges [fdchangecnt - 1] = fd;
640 } 954 }
641} 955}
642 956
643void inline_speed 957/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
958inline_speed void
644fd_kill (EV_P_ int fd) 959fd_kill (EV_P_ int fd)
645{ 960{
646 ev_io *w; 961 ev_io *w;
647 962
648 while ((w = (ev_io *)anfds [fd].head)) 963 while ((w = (ev_io *)anfds [fd].head))
… …
650 ev_io_stop (EV_A_ w); 965 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 966 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 } 967 }
653} 968}
654 969
655int inline_size 970/* check whether the given fd is atcually valid, for error recovery */
971inline_size int
656fd_valid (int fd) 972fd_valid (int fd)
657{ 973{
658#ifdef _WIN32 974#ifdef _WIN32
659 return _get_osfhandle (fd) != -1; 975 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660#else 976#else
661 return fcntl (fd, F_GETFD) != -1; 977 return fcntl (fd, F_GETFD) != -1;
662#endif 978#endif
663} 979}
664 980
… …
668{ 984{
669 int fd; 985 int fd;
670 986
671 for (fd = 0; fd < anfdmax; ++fd) 987 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events) 988 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF) 989 if (!fd_valid (fd) && errno == EBADF)
674 fd_kill (EV_A_ fd); 990 fd_kill (EV_A_ fd);
675} 991}
676 992
677/* called on ENOMEM in select/poll to kill some fds and retry */ 993/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline 994static void noinline
… …
682 998
683 for (fd = anfdmax; fd--; ) 999 for (fd = anfdmax; fd--; )
684 if (anfds [fd].events) 1000 if (anfds [fd].events)
685 { 1001 {
686 fd_kill (EV_A_ fd); 1002 fd_kill (EV_A_ fd);
687 return; 1003 break;
688 } 1004 }
689} 1005}
690 1006
691/* usually called after fork if backend needs to re-arm all fds from scratch */ 1007/* usually called after fork if backend needs to re-arm all fds from scratch */
692static void noinline 1008static void noinline
… …
696 1012
697 for (fd = 0; fd < anfdmax; ++fd) 1013 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events) 1014 if (anfds [fd].events)
699 { 1015 {
700 anfds [fd].events = 0; 1016 anfds [fd].events = 0;
1017 anfds [fd].emask = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1018 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702 } 1019 }
703} 1020}
704 1021
705/*****************************************************************************/ 1022/*****************************************************************************/
706 1023
707void inline_speed 1024/*
708upheap (WT *heap, int k) 1025 * the heap functions want a real array index. array index 0 uis guaranteed to not
709{ 1026 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
710 WT w = heap [k]; 1027 * the branching factor of the d-tree.
1028 */
711 1029
712 while (k) 1030/*
713 { 1031 * at the moment we allow libev the luxury of two heaps,
714 int p = (k - 1) >> 1; 1032 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1033 * which is more cache-efficient.
1034 * the difference is about 5% with 50000+ watchers.
1035 */
1036#if EV_USE_4HEAP
715 1037
716 if (heap [p]->at <= w->at) 1038#define DHEAP 4
1039#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1040#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1041#define UPHEAP_DONE(p,k) ((p) == (k))
1042
1043/* away from the root */
1044inline_speed void
1045downheap (ANHE *heap, int N, int k)
1046{
1047 ANHE he = heap [k];
1048 ANHE *E = heap + N + HEAP0;
1049
1050 for (;;)
1051 {
1052 ev_tstamp minat;
1053 ANHE *minpos;
1054 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1055
1056 /* find minimum child */
1057 if (expect_true (pos + DHEAP - 1 < E))
1058 {
1059 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1060 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1061 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1062 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1063 }
1064 else if (pos < E)
1065 {
1066 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1067 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1068 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1069 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1070 }
1071 else
717 break; 1072 break;
718 1073
1074 if (ANHE_at (he) <= minat)
1075 break;
1076
1077 heap [k] = *minpos;
1078 ev_active (ANHE_w (*minpos)) = k;
1079
1080 k = minpos - heap;
1081 }
1082
1083 heap [k] = he;
1084 ev_active (ANHE_w (he)) = k;
1085}
1086
1087#else /* 4HEAP */
1088
1089#define HEAP0 1
1090#define HPARENT(k) ((k) >> 1)
1091#define UPHEAP_DONE(p,k) (!(p))
1092
1093/* away from the root */
1094inline_speed void
1095downheap (ANHE *heap, int N, int k)
1096{
1097 ANHE he = heap [k];
1098
1099 for (;;)
1100 {
1101 int c = k << 1;
1102
1103 if (c >= N + HEAP0)
1104 break;
1105
1106 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1107 ? 1 : 0;
1108
1109 if (ANHE_at (he) <= ANHE_at (heap [c]))
1110 break;
1111
1112 heap [k] = heap [c];
1113 ev_active (ANHE_w (heap [k])) = k;
1114
1115 k = c;
1116 }
1117
1118 heap [k] = he;
1119 ev_active (ANHE_w (he)) = k;
1120}
1121#endif
1122
1123/* towards the root */
1124inline_speed void
1125upheap (ANHE *heap, int k)
1126{
1127 ANHE he = heap [k];
1128
1129 for (;;)
1130 {
1131 int p = HPARENT (k);
1132
1133 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1134 break;
1135
719 heap [k] = heap [p]; 1136 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1; 1137 ev_active (ANHE_w (heap [k])) = k;
721 k = p; 1138 k = p;
722 } 1139 }
723 1140
724 heap [k] = w; 1141 heap [k] = he;
725 ((W)heap [k])->active = k + 1; 1142 ev_active (ANHE_w (he)) = k;
726} 1143}
727 1144
728void inline_speed 1145/* move an element suitably so it is in a correct place */
729downheap (WT *heap, int N, int k) 1146inline_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) 1147adjustheap (ANHE *heap, int N, int k)
758{ 1148{
1149 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
759 upheap (heap, k); 1150 upheap (heap, k);
1151 else
760 downheap (heap, N, k); 1152 downheap (heap, N, k);
1153}
1154
1155/* rebuild the heap: this function is used only once and executed rarely */
1156inline_size void
1157reheap (ANHE *heap, int N)
1158{
1159 int i;
1160
1161 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1162 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1163 for (i = 0; i < N; ++i)
1164 upheap (heap, i + HEAP0);
761} 1165}
762 1166
763/*****************************************************************************/ 1167/*****************************************************************************/
764 1168
1169/* associate signal watchers to a signal signal */
765typedef struct 1170typedef struct
766{ 1171{
1172 EV_ATOMIC_T pending;
1173#if EV_MULTIPLICITY
1174 EV_P;
1175#endif
767 WL head; 1176 WL head;
768 sig_atomic_t volatile gotsig;
769} ANSIG; 1177} ANSIG;
770 1178
771static ANSIG *signals; 1179static ANSIG signals [EV_NSIG - 1];
772static int signalmax;
773 1180
774static int sigpipe [2]; 1181/*****************************************************************************/
775static sig_atomic_t volatile gotsig;
776static ev_io sigev;
777 1182
778void inline_size 1183/* used to prepare libev internal fd's */
779signals_init (ANSIG *base, int count) 1184/* this is not fork-safe */
780{ 1185inline_speed void
781 while (count--)
782 {
783 base->head = 0;
784 base->gotsig = 0;
785
786 ++base;
787 }
788}
789
790static void
791sighandler (int signum)
792{
793#if _WIN32
794 signal (signum, sighandler);
795#endif
796
797 signals [signum - 1].gotsig = 1;
798
799 if (!gotsig)
800 {
801 int old_errno = errno;
802 gotsig = 1;
803 write (sigpipe [1], &signum, 1);
804 errno = old_errno;
805 }
806}
807
808void noinline
809ev_feed_signal_event (EV_P_ int signum)
810{
811 WL w;
812
813#if EV_MULTIPLICITY
814 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
815#endif
816
817 --signum;
818
819 if (signum < 0 || signum >= signalmax)
820 return;
821
822 signals [signum].gotsig = 0;
823
824 for (w = signals [signum].head; w; w = w->next)
825 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
826}
827
828static void
829sigcb (EV_P_ ev_io *iow, int revents)
830{
831 int signum;
832
833 read (sigpipe [0], &revents, 1);
834 gotsig = 0;
835
836 for (signum = signalmax; signum--; )
837 if (signals [signum].gotsig)
838 ev_feed_signal_event (EV_A_ signum + 1);
839}
840
841void inline_speed
842fd_intern (int fd) 1186fd_intern (int fd)
843{ 1187{
844#ifdef _WIN32 1188#ifdef _WIN32
845 int arg = 1; 1189 unsigned long arg = 1;
846 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1190 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
847#else 1191#else
848 fcntl (fd, F_SETFD, FD_CLOEXEC); 1192 fcntl (fd, F_SETFD, FD_CLOEXEC);
849 fcntl (fd, F_SETFL, O_NONBLOCK); 1193 fcntl (fd, F_SETFL, O_NONBLOCK);
850#endif 1194#endif
851} 1195}
852 1196
853static void noinline 1197static void noinline
854siginit (EV_P) 1198evpipe_init (EV_P)
855{ 1199{
1200 if (!ev_is_active (&pipe_w))
1201 {
1202#if EV_USE_EVENTFD
1203 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1204 if (evfd < 0 && errno == EINVAL)
1205 evfd = eventfd (0, 0);
1206
1207 if (evfd >= 0)
1208 {
1209 evpipe [0] = -1;
1210 fd_intern (evfd); /* doing it twice doesn't hurt */
1211 ev_io_set (&pipe_w, evfd, EV_READ);
1212 }
1213 else
1214#endif
1215 {
1216 while (pipe (evpipe))
1217 ev_syserr ("(libev) error creating signal/async pipe");
1218
856 fd_intern (sigpipe [0]); 1219 fd_intern (evpipe [0]);
857 fd_intern (sigpipe [1]); 1220 fd_intern (evpipe [1]);
1221 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1222 }
858 1223
859 ev_io_set (&sigev, sigpipe [0], EV_READ);
860 ev_io_start (EV_A_ &sigev); 1224 ev_io_start (EV_A_ &pipe_w);
861 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1225 ev_unref (EV_A); /* watcher should not keep loop alive */
1226 }
1227}
1228
1229inline_size void
1230evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1231{
1232 if (!*flag)
1233 {
1234 int old_errno = errno; /* save errno because write might clobber it */
1235
1236 *flag = 1;
1237
1238#if EV_USE_EVENTFD
1239 if (evfd >= 0)
1240 {
1241 uint64_t counter = 1;
1242 write (evfd, &counter, sizeof (uint64_t));
1243 }
1244 else
1245#endif
1246 write (evpipe [1], &old_errno, 1);
1247
1248 errno = old_errno;
1249 }
1250}
1251
1252/* called whenever the libev signal pipe */
1253/* got some events (signal, async) */
1254static void
1255pipecb (EV_P_ ev_io *iow, int revents)
1256{
1257 int i;
1258
1259#if EV_USE_EVENTFD
1260 if (evfd >= 0)
1261 {
1262 uint64_t counter;
1263 read (evfd, &counter, sizeof (uint64_t));
1264 }
1265 else
1266#endif
1267 {
1268 char dummy;
1269 read (evpipe [0], &dummy, 1);
1270 }
1271
1272 if (sig_pending)
1273 {
1274 sig_pending = 0;
1275
1276 for (i = EV_NSIG - 1; i--; )
1277 if (expect_false (signals [i].pending))
1278 ev_feed_signal_event (EV_A_ i + 1);
1279 }
1280
1281#if EV_ASYNC_ENABLE
1282 if (async_pending)
1283 {
1284 async_pending = 0;
1285
1286 for (i = asynccnt; i--; )
1287 if (asyncs [i]->sent)
1288 {
1289 asyncs [i]->sent = 0;
1290 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1291 }
1292 }
1293#endif
862} 1294}
863 1295
864/*****************************************************************************/ 1296/*****************************************************************************/
865 1297
1298static void
1299ev_sighandler (int signum)
1300{
1301#if EV_MULTIPLICITY
1302 EV_P = signals [signum - 1].loop;
1303#endif
1304
1305#ifdef _WIN32
1306 signal (signum, ev_sighandler);
1307#endif
1308
1309 signals [signum - 1].pending = 1;
1310 evpipe_write (EV_A_ &sig_pending);
1311}
1312
1313void noinline
1314ev_feed_signal_event (EV_P_ int signum)
1315{
1316 WL w;
1317
1318 if (expect_false (signum <= 0 || signum > EV_NSIG))
1319 return;
1320
1321 --signum;
1322
1323#if EV_MULTIPLICITY
1324 /* it is permissible to try to feed a signal to the wrong loop */
1325 /* or, likely more useful, feeding a signal nobody is waiting for */
1326
1327 if (expect_false (signals [signum].loop != EV_A))
1328 return;
1329#endif
1330
1331 signals [signum].pending = 0;
1332
1333 for (w = signals [signum].head; w; w = w->next)
1334 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1335}
1336
1337#if EV_USE_SIGNALFD
1338static void
1339sigfdcb (EV_P_ ev_io *iow, int revents)
1340{
1341 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1342
1343 for (;;)
1344 {
1345 ssize_t res = read (sigfd, si, sizeof (si));
1346
1347 /* not ISO-C, as res might be -1, but works with SuS */
1348 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1349 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1350
1351 if (res < (ssize_t)sizeof (si))
1352 break;
1353 }
1354}
1355#endif
1356
1357/*****************************************************************************/
1358
866static WL childs [EV_PID_HASHSIZE]; 1359static WL childs [EV_PID_HASHSIZE];
867 1360
868#ifndef _WIN32 1361#ifndef _WIN32
869 1362
870static ev_signal childev; 1363static ev_signal childev;
871 1364
872void inline_speed 1365#ifndef WIFCONTINUED
1366# define WIFCONTINUED(status) 0
1367#endif
1368
1369/* handle a single child status event */
1370inline_speed void
873child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1371child_reap (EV_P_ int chain, int pid, int status)
874{ 1372{
875 ev_child *w; 1373 ev_child *w;
1374 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
876 1375
877 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1376 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1377 {
878 if (w->pid == pid || !w->pid) 1378 if ((w->pid == pid || !w->pid)
1379 && (!traced || (w->flags & 1)))
879 { 1380 {
880 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1381 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
881 w->rpid = pid; 1382 w->rpid = pid;
882 w->rstatus = status; 1383 w->rstatus = status;
883 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1384 ev_feed_event (EV_A_ (W)w, EV_CHILD);
884 } 1385 }
1386 }
885} 1387}
886 1388
887#ifndef WCONTINUED 1389#ifndef WCONTINUED
888# define WCONTINUED 0 1390# define WCONTINUED 0
889#endif 1391#endif
890 1392
1393/* called on sigchld etc., calls waitpid */
891static void 1394static void
892childcb (EV_P_ ev_signal *sw, int revents) 1395childcb (EV_P_ ev_signal *sw, int revents)
893{ 1396{
894 int pid, status; 1397 int pid, status;
895 1398
… …
898 if (!WCONTINUED 1401 if (!WCONTINUED
899 || errno != EINVAL 1402 || errno != EINVAL
900 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1403 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
901 return; 1404 return;
902 1405
903 /* make sure we are called again until all childs have been reaped */ 1406 /* make sure we are called again until all children have been reaped */
904 /* we need to do it this way so that the callback gets called before we continue */ 1407 /* we need to do it this way so that the callback gets called before we continue */
905 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1408 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
906 1409
907 child_reap (EV_A_ sw, pid, pid, status); 1410 child_reap (EV_A_ pid, pid, status);
908 if (EV_PID_HASHSIZE > 1) 1411 if (EV_PID_HASHSIZE > 1)
909 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1412 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
910} 1413}
911 1414
912#endif 1415#endif
913 1416
914/*****************************************************************************/ 1417/*****************************************************************************/
… …
976 /* kqueue is borked on everything but netbsd apparently */ 1479 /* kqueue is borked on everything but netbsd apparently */
977 /* it usually doesn't work correctly on anything but sockets and pipes */ 1480 /* it usually doesn't work correctly on anything but sockets and pipes */
978 flags &= ~EVBACKEND_KQUEUE; 1481 flags &= ~EVBACKEND_KQUEUE;
979#endif 1482#endif
980#ifdef __APPLE__ 1483#ifdef __APPLE__
981 // flags &= ~EVBACKEND_KQUEUE; for documentation 1484 /* only select works correctly on that "unix-certified" platform */
982 flags &= ~EVBACKEND_POLL; 1485 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1486 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
983#endif 1487#endif
984 1488
985 return flags; 1489 return flags;
986} 1490}
987 1491
… …
1001ev_backend (EV_P) 1505ev_backend (EV_P)
1002{ 1506{
1003 return backend; 1507 return backend;
1004} 1508}
1005 1509
1510#if EV_MINIMAL < 2
1006unsigned int 1511unsigned int
1007ev_loop_count (EV_P) 1512ev_loop_count (EV_P)
1008{ 1513{
1009 return loop_count; 1514 return loop_count;
1010} 1515}
1011 1516
1517unsigned int
1518ev_loop_depth (EV_P)
1519{
1520 return loop_depth;
1521}
1522
1012void 1523void
1013ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1524ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1014{ 1525{
1015 io_blocktime = interval; 1526 io_blocktime = interval;
1016} 1527}
… …
1019ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1530ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1020{ 1531{
1021 timeout_blocktime = interval; 1532 timeout_blocktime = interval;
1022} 1533}
1023 1534
1535void
1536ev_set_userdata (EV_P_ void *data)
1537{
1538 userdata = data;
1539}
1540
1541void *
1542ev_userdata (EV_P)
1543{
1544 return userdata;
1545}
1546
1547void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1548{
1549 invoke_cb = invoke_pending_cb;
1550}
1551
1552void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1553{
1554 release_cb = release;
1555 acquire_cb = acquire;
1556}
1557#endif
1558
1559/* initialise a loop structure, must be zero-initialised */
1024static void noinline 1560static void noinline
1025loop_init (EV_P_ unsigned int flags) 1561loop_init (EV_P_ unsigned int flags)
1026{ 1562{
1027 if (!backend) 1563 if (!backend)
1028 { 1564 {
1565#if EV_USE_REALTIME
1566 if (!have_realtime)
1567 {
1568 struct timespec ts;
1569
1570 if (!clock_gettime (CLOCK_REALTIME, &ts))
1571 have_realtime = 1;
1572 }
1573#endif
1574
1029#if EV_USE_MONOTONIC 1575#if EV_USE_MONOTONIC
1576 if (!have_monotonic)
1030 { 1577 {
1031 struct timespec ts; 1578 struct timespec ts;
1579
1032 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1580 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1033 have_monotonic = 1; 1581 have_monotonic = 1;
1034 } 1582 }
1035#endif 1583#endif
1036
1037 ev_rt_now = ev_time ();
1038 mn_now = get_clock ();
1039 now_floor = mn_now;
1040 rtmn_diff = ev_rt_now - mn_now;
1041
1042 io_blocktime = 0.;
1043 timeout_blocktime = 0.;
1044 1584
1045 /* pid check not overridable via env */ 1585 /* pid check not overridable via env */
1046#ifndef _WIN32 1586#ifndef _WIN32
1047 if (flags & EVFLAG_FORKCHECK) 1587 if (flags & EVFLAG_FORKCHECK)
1048 curpid = getpid (); 1588 curpid = getpid ();
… …
1051 if (!(flags & EVFLAG_NOENV) 1591 if (!(flags & EVFLAG_NOENV)
1052 && !enable_secure () 1592 && !enable_secure ()
1053 && getenv ("LIBEV_FLAGS")) 1593 && getenv ("LIBEV_FLAGS"))
1054 flags = atoi (getenv ("LIBEV_FLAGS")); 1594 flags = atoi (getenv ("LIBEV_FLAGS"));
1055 1595
1596 ev_rt_now = ev_time ();
1597 mn_now = get_clock ();
1598 now_floor = mn_now;
1599 rtmn_diff = ev_rt_now - mn_now;
1600#if EV_MINIMAL < 2
1601 invoke_cb = ev_invoke_pending;
1602#endif
1603
1604 io_blocktime = 0.;
1605 timeout_blocktime = 0.;
1606 backend = 0;
1607 backend_fd = -1;
1608 sig_pending = 0;
1609#if EV_ASYNC_ENABLE
1610 async_pending = 0;
1611#endif
1612#if EV_USE_INOTIFY
1613 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1614#endif
1615#if EV_USE_SIGNALFD
1616 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1617#endif
1618
1056 if (!(flags & 0x0000ffffUL)) 1619 if (!(flags & 0x0000ffffU))
1057 flags |= ev_recommended_backends (); 1620 flags |= ev_recommended_backends ();
1058
1059 backend = 0;
1060 backend_fd = -1;
1061#if EV_USE_INOTIFY
1062 fs_fd = -2;
1063#endif
1064 1621
1065#if EV_USE_PORT 1622#if EV_USE_PORT
1066 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1623 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1067#endif 1624#endif
1068#if EV_USE_KQUEUE 1625#if EV_USE_KQUEUE
… …
1076#endif 1633#endif
1077#if EV_USE_SELECT 1634#if EV_USE_SELECT
1078 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1635 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1079#endif 1636#endif
1080 1637
1638 ev_prepare_init (&pending_w, pendingcb);
1639
1081 ev_init (&sigev, sigcb); 1640 ev_init (&pipe_w, pipecb);
1082 ev_set_priority (&sigev, EV_MAXPRI); 1641 ev_set_priority (&pipe_w, EV_MAXPRI);
1083 } 1642 }
1084} 1643}
1085 1644
1645/* free up a loop structure */
1086static void noinline 1646static void noinline
1087loop_destroy (EV_P) 1647loop_destroy (EV_P)
1088{ 1648{
1089 int i; 1649 int i;
1650
1651 if (ev_is_active (&pipe_w))
1652 {
1653 /*ev_ref (EV_A);*/
1654 /*ev_io_stop (EV_A_ &pipe_w);*/
1655
1656#if EV_USE_EVENTFD
1657 if (evfd >= 0)
1658 close (evfd);
1659#endif
1660
1661 if (evpipe [0] >= 0)
1662 {
1663 EV_WIN32_CLOSE_FD (evpipe [0]);
1664 EV_WIN32_CLOSE_FD (evpipe [1]);
1665 }
1666 }
1667
1668#if EV_USE_SIGNALFD
1669 if (ev_is_active (&sigfd_w))
1670 close (sigfd);
1671#endif
1090 1672
1091#if EV_USE_INOTIFY 1673#if EV_USE_INOTIFY
1092 if (fs_fd >= 0) 1674 if (fs_fd >= 0)
1093 close (fs_fd); 1675 close (fs_fd);
1094#endif 1676#endif
… …
1118#if EV_IDLE_ENABLE 1700#if EV_IDLE_ENABLE
1119 array_free (idle, [i]); 1701 array_free (idle, [i]);
1120#endif 1702#endif
1121 } 1703 }
1122 1704
1123 ev_free (anfds); anfdmax = 0; 1705 ev_free (anfds); anfds = 0; anfdmax = 0;
1124 1706
1125 /* have to use the microsoft-never-gets-it-right macro */ 1707 /* have to use the microsoft-never-gets-it-right macro */
1708 array_free (rfeed, EMPTY);
1126 array_free (fdchange, EMPTY); 1709 array_free (fdchange, EMPTY);
1127 array_free (timer, EMPTY); 1710 array_free (timer, EMPTY);
1128#if EV_PERIODIC_ENABLE 1711#if EV_PERIODIC_ENABLE
1129 array_free (periodic, EMPTY); 1712 array_free (periodic, EMPTY);
1130#endif 1713#endif
1131#if EV_FORK_ENABLE 1714#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY); 1715 array_free (fork, EMPTY);
1133#endif 1716#endif
1134 array_free (prepare, EMPTY); 1717 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY); 1718 array_free (check, EMPTY);
1719#if EV_ASYNC_ENABLE
1720 array_free (async, EMPTY);
1721#endif
1136 1722
1137 backend = 0; 1723 backend = 0;
1138} 1724}
1139 1725
1726#if EV_USE_INOTIFY
1140void inline_size infy_fork (EV_P); 1727inline_size void infy_fork (EV_P);
1728#endif
1141 1729
1142void inline_size 1730inline_size void
1143loop_fork (EV_P) 1731loop_fork (EV_P)
1144{ 1732{
1145#if EV_USE_PORT 1733#if EV_USE_PORT
1146 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1734 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1147#endif 1735#endif
… …
1153#endif 1741#endif
1154#if EV_USE_INOTIFY 1742#if EV_USE_INOTIFY
1155 infy_fork (EV_A); 1743 infy_fork (EV_A);
1156#endif 1744#endif
1157 1745
1158 if (ev_is_active (&sigev)) 1746 if (ev_is_active (&pipe_w))
1159 { 1747 {
1160 /* default loop */ 1748 /* this "locks" the handlers against writing to the pipe */
1749 /* while we modify the fd vars */
1750 sig_pending = 1;
1751#if EV_ASYNC_ENABLE
1752 async_pending = 1;
1753#endif
1161 1754
1162 ev_ref (EV_A); 1755 ev_ref (EV_A);
1163 ev_io_stop (EV_A_ &sigev); 1756 ev_io_stop (EV_A_ &pipe_w);
1164 close (sigpipe [0]);
1165 close (sigpipe [1]);
1166 1757
1167 while (pipe (sigpipe)) 1758#if EV_USE_EVENTFD
1168 syserr ("(libev) error creating pipe"); 1759 if (evfd >= 0)
1760 close (evfd);
1761#endif
1169 1762
1763 if (evpipe [0] >= 0)
1764 {
1765 EV_WIN32_CLOSE_FD (evpipe [0]);
1766 EV_WIN32_CLOSE_FD (evpipe [1]);
1767 }
1768
1170 siginit (EV_A); 1769 evpipe_init (EV_A);
1770 /* now iterate over everything, in case we missed something */
1771 pipecb (EV_A_ &pipe_w, EV_READ);
1171 } 1772 }
1172 1773
1173 postfork = 0; 1774 postfork = 0;
1174} 1775}
1175 1776
1176#if EV_MULTIPLICITY 1777#if EV_MULTIPLICITY
1778
1177struct ev_loop * 1779struct ev_loop *
1178ev_loop_new (unsigned int flags) 1780ev_loop_new (unsigned int flags)
1179{ 1781{
1180 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1782 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1181 1783
1182 memset (loop, 0, sizeof (struct ev_loop)); 1784 memset (EV_A, 0, sizeof (struct ev_loop));
1183
1184 loop_init (EV_A_ flags); 1785 loop_init (EV_A_ flags);
1185 1786
1186 if (ev_backend (EV_A)) 1787 if (ev_backend (EV_A))
1187 return loop; 1788 return EV_A;
1188 1789
1189 return 0; 1790 return 0;
1190} 1791}
1191 1792
1192void 1793void
… …
1197} 1798}
1198 1799
1199void 1800void
1200ev_loop_fork (EV_P) 1801ev_loop_fork (EV_P)
1201{ 1802{
1202 postfork = 1; 1803 postfork = 1; /* must be in line with ev_default_fork */
1203} 1804}
1805#endif /* multiplicity */
1204 1806
1807#if EV_VERIFY
1808static void noinline
1809verify_watcher (EV_P_ W w)
1810{
1811 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1812
1813 if (w->pending)
1814 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1815}
1816
1817static void noinline
1818verify_heap (EV_P_ ANHE *heap, int N)
1819{
1820 int i;
1821
1822 for (i = HEAP0; i < N + HEAP0; ++i)
1823 {
1824 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1825 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1826 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1827
1828 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1829 }
1830}
1831
1832static void noinline
1833array_verify (EV_P_ W *ws, int cnt)
1834{
1835 while (cnt--)
1836 {
1837 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1838 verify_watcher (EV_A_ ws [cnt]);
1839 }
1840}
1841#endif
1842
1843#if EV_MINIMAL < 2
1844void
1845ev_loop_verify (EV_P)
1846{
1847#if EV_VERIFY
1848 int i;
1849 WL w;
1850
1851 assert (activecnt >= -1);
1852
1853 assert (fdchangemax >= fdchangecnt);
1854 for (i = 0; i < fdchangecnt; ++i)
1855 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1856
1857 assert (anfdmax >= 0);
1858 for (i = 0; i < anfdmax; ++i)
1859 for (w = anfds [i].head; w; w = w->next)
1860 {
1861 verify_watcher (EV_A_ (W)w);
1862 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1863 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1864 }
1865
1866 assert (timermax >= timercnt);
1867 verify_heap (EV_A_ timers, timercnt);
1868
1869#if EV_PERIODIC_ENABLE
1870 assert (periodicmax >= periodiccnt);
1871 verify_heap (EV_A_ periodics, periodiccnt);
1872#endif
1873
1874 for (i = NUMPRI; i--; )
1875 {
1876 assert (pendingmax [i] >= pendingcnt [i]);
1877#if EV_IDLE_ENABLE
1878 assert (idleall >= 0);
1879 assert (idlemax [i] >= idlecnt [i]);
1880 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1881#endif
1882 }
1883
1884#if EV_FORK_ENABLE
1885 assert (forkmax >= forkcnt);
1886 array_verify (EV_A_ (W *)forks, forkcnt);
1887#endif
1888
1889#if EV_ASYNC_ENABLE
1890 assert (asyncmax >= asynccnt);
1891 array_verify (EV_A_ (W *)asyncs, asynccnt);
1892#endif
1893
1894 assert (preparemax >= preparecnt);
1895 array_verify (EV_A_ (W *)prepares, preparecnt);
1896
1897 assert (checkmax >= checkcnt);
1898 array_verify (EV_A_ (W *)checks, checkcnt);
1899
1900# if 0
1901 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1902 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1903# endif
1904#endif
1905}
1205#endif 1906#endif
1206 1907
1207#if EV_MULTIPLICITY 1908#if EV_MULTIPLICITY
1208struct ev_loop * 1909struct ev_loop *
1209ev_default_loop_init (unsigned int flags) 1910ev_default_loop_init (unsigned int flags)
1210#else 1911#else
1211int 1912int
1212ev_default_loop (unsigned int flags) 1913ev_default_loop (unsigned int flags)
1213#endif 1914#endif
1214{ 1915{
1215 if (sigpipe [0] == sigpipe [1])
1216 if (pipe (sigpipe))
1217 return 0;
1218
1219 if (!ev_default_loop_ptr) 1916 if (!ev_default_loop_ptr)
1220 { 1917 {
1221#if EV_MULTIPLICITY 1918#if EV_MULTIPLICITY
1222 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1919 EV_P = ev_default_loop_ptr = &default_loop_struct;
1223#else 1920#else
1224 ev_default_loop_ptr = 1; 1921 ev_default_loop_ptr = 1;
1225#endif 1922#endif
1226 1923
1227 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1228 1925
1229 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1230 { 1927 {
1231 siginit (EV_A);
1232
1233#ifndef _WIN32 1928#ifndef _WIN32
1234 ev_signal_init (&childev, childcb, SIGCHLD); 1929 ev_signal_init (&childev, childcb, SIGCHLD);
1235 ev_set_priority (&childev, EV_MAXPRI); 1930 ev_set_priority (&childev, EV_MAXPRI);
1236 ev_signal_start (EV_A_ &childev); 1931 ev_signal_start (EV_A_ &childev);
1237 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1932 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1246 1941
1247void 1942void
1248ev_default_destroy (void) 1943ev_default_destroy (void)
1249{ 1944{
1250#if EV_MULTIPLICITY 1945#if EV_MULTIPLICITY
1251 struct ev_loop *loop = ev_default_loop_ptr; 1946 EV_P = ev_default_loop_ptr;
1252#endif 1947#endif
1948
1949 ev_default_loop_ptr = 0;
1253 1950
1254#ifndef _WIN32 1951#ifndef _WIN32
1255 ev_ref (EV_A); /* child watcher */ 1952 ev_ref (EV_A); /* child watcher */
1256 ev_signal_stop (EV_A_ &childev); 1953 ev_signal_stop (EV_A_ &childev);
1257#endif 1954#endif
1258 1955
1259 ev_ref (EV_A); /* signal watcher */
1260 ev_io_stop (EV_A_ &sigev);
1261
1262 close (sigpipe [0]); sigpipe [0] = 0;
1263 close (sigpipe [1]); sigpipe [1] = 0;
1264
1265 loop_destroy (EV_A); 1956 loop_destroy (EV_A);
1266} 1957}
1267 1958
1268void 1959void
1269ev_default_fork (void) 1960ev_default_fork (void)
1270{ 1961{
1271#if EV_MULTIPLICITY 1962#if EV_MULTIPLICITY
1272 struct ev_loop *loop = ev_default_loop_ptr; 1963 EV_P = ev_default_loop_ptr;
1273#endif 1964#endif
1274 1965
1275 if (backend) 1966 postfork = 1; /* must be in line with ev_loop_fork */
1276 postfork = 1;
1277} 1967}
1278 1968
1279/*****************************************************************************/ 1969/*****************************************************************************/
1280 1970
1281void 1971void
1282ev_invoke (EV_P_ void *w, int revents) 1972ev_invoke (EV_P_ void *w, int revents)
1283{ 1973{
1284 EV_CB_INVOKE ((W)w, revents); 1974 EV_CB_INVOKE ((W)w, revents);
1285} 1975}
1286 1976
1287void inline_speed 1977unsigned int
1288call_pending (EV_P) 1978ev_pending_count (EV_P)
1979{
1980 int pri;
1981 unsigned int count = 0;
1982
1983 for (pri = NUMPRI; pri--; )
1984 count += pendingcnt [pri];
1985
1986 return count;
1987}
1988
1989void noinline
1990ev_invoke_pending (EV_P)
1289{ 1991{
1290 int pri; 1992 int pri;
1291 1993
1292 for (pri = NUMPRI; pri--; ) 1994 for (pri = NUMPRI; pri--; )
1293 while (pendingcnt [pri]) 1995 while (pendingcnt [pri])
1294 { 1996 {
1295 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1997 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1296 1998
1297 if (expect_true (p->w))
1298 {
1299 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1999 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2000 /* ^ this is no longer true, as pending_w could be here */
1300 2001
1301 p->w->pending = 0; 2002 p->w->pending = 0;
1302 EV_CB_INVOKE (p->w, p->events); 2003 EV_CB_INVOKE (p->w, p->events);
1303 } 2004 EV_FREQUENT_CHECK;
1304 } 2005 }
1305} 2006}
1306 2007
1307void inline_size
1308timers_reify (EV_P)
1309{
1310 while (timercnt && ((WT)timers [0])->at <= mn_now)
1311 {
1312 ev_timer *w = (ev_timer *)timers [0];
1313
1314 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1315
1316 /* first reschedule or stop timer */
1317 if (w->repeat)
1318 {
1319 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1320
1321 ((WT)w)->at += w->repeat;
1322 if (((WT)w)->at < mn_now)
1323 ((WT)w)->at = mn_now;
1324
1325 downheap (timers, timercnt, 0);
1326 }
1327 else
1328 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1329
1330 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1331 }
1332}
1333
1334#if EV_PERIODIC_ENABLE
1335void inline_size
1336periodics_reify (EV_P)
1337{
1338 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1339 {
1340 ev_periodic *w = (ev_periodic *)periodics [0];
1341
1342 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1343
1344 /* first reschedule or stop timer */
1345 if (w->reschedule_cb)
1346 {
1347 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1348 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1349 downheap (periodics, periodiccnt, 0);
1350 }
1351 else if (w->interval)
1352 {
1353 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1354 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1355 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1356 downheap (periodics, periodiccnt, 0);
1357 }
1358 else
1359 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1360
1361 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1362 }
1363}
1364
1365static void noinline
1366periodics_reschedule (EV_P)
1367{
1368 int i;
1369
1370 /* adjust periodics after time jump */
1371 for (i = 0; i < periodiccnt; ++i)
1372 {
1373 ev_periodic *w = (ev_periodic *)periodics [i];
1374
1375 if (w->reschedule_cb)
1376 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1377 else if (w->interval)
1378 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1379 }
1380
1381 /* now rebuild the heap */
1382 for (i = periodiccnt >> 1; i--; )
1383 downheap (periodics, periodiccnt, i);
1384}
1385#endif
1386
1387#if EV_IDLE_ENABLE 2008#if EV_IDLE_ENABLE
1388void inline_size 2009/* make idle watchers pending. this handles the "call-idle */
2010/* only when higher priorities are idle" logic */
2011inline_size void
1389idle_reify (EV_P) 2012idle_reify (EV_P)
1390{ 2013{
1391 if (expect_false (idleall)) 2014 if (expect_false (idleall))
1392 { 2015 {
1393 int pri; 2016 int pri;
… …
1405 } 2028 }
1406 } 2029 }
1407} 2030}
1408#endif 2031#endif
1409 2032
1410void inline_speed 2033/* make timers pending */
2034inline_size void
2035timers_reify (EV_P)
2036{
2037 EV_FREQUENT_CHECK;
2038
2039 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2040 {
2041 do
2042 {
2043 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2044
2045 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2046
2047 /* first reschedule or stop timer */
2048 if (w->repeat)
2049 {
2050 ev_at (w) += w->repeat;
2051 if (ev_at (w) < mn_now)
2052 ev_at (w) = mn_now;
2053
2054 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2055
2056 ANHE_at_cache (timers [HEAP0]);
2057 downheap (timers, timercnt, HEAP0);
2058 }
2059 else
2060 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2061
2062 EV_FREQUENT_CHECK;
2063 feed_reverse (EV_A_ (W)w);
2064 }
2065 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2066
2067 feed_reverse_done (EV_A_ EV_TIMEOUT);
2068 }
2069}
2070
2071#if EV_PERIODIC_ENABLE
2072/* make periodics pending */
2073inline_size void
2074periodics_reify (EV_P)
2075{
2076 EV_FREQUENT_CHECK;
2077
2078 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2079 {
2080 int feed_count = 0;
2081
2082 do
2083 {
2084 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2085
2086 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2087
2088 /* first reschedule or stop timer */
2089 if (w->reschedule_cb)
2090 {
2091 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2092
2093 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2094
2095 ANHE_at_cache (periodics [HEAP0]);
2096 downheap (periodics, periodiccnt, HEAP0);
2097 }
2098 else if (w->interval)
2099 {
2100 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2101 /* if next trigger time is not sufficiently in the future, put it there */
2102 /* this might happen because of floating point inexactness */
2103 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2104 {
2105 ev_at (w) += w->interval;
2106
2107 /* if interval is unreasonably low we might still have a time in the past */
2108 /* so correct this. this will make the periodic very inexact, but the user */
2109 /* has effectively asked to get triggered more often than possible */
2110 if (ev_at (w) < ev_rt_now)
2111 ev_at (w) = ev_rt_now;
2112 }
2113
2114 ANHE_at_cache (periodics [HEAP0]);
2115 downheap (periodics, periodiccnt, HEAP0);
2116 }
2117 else
2118 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2119
2120 EV_FREQUENT_CHECK;
2121 feed_reverse (EV_A_ (W)w);
2122 }
2123 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2124
2125 feed_reverse_done (EV_A_ EV_PERIODIC);
2126 }
2127}
2128
2129/* simply recalculate all periodics */
2130/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2131static void noinline
2132periodics_reschedule (EV_P)
2133{
2134 int i;
2135
2136 /* adjust periodics after time jump */
2137 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2138 {
2139 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2140
2141 if (w->reschedule_cb)
2142 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2143 else if (w->interval)
2144 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2145
2146 ANHE_at_cache (periodics [i]);
2147 }
2148
2149 reheap (periodics, periodiccnt);
2150}
2151#endif
2152
2153/* adjust all timers by a given offset */
2154static void noinline
2155timers_reschedule (EV_P_ ev_tstamp adjust)
2156{
2157 int i;
2158
2159 for (i = 0; i < timercnt; ++i)
2160 {
2161 ANHE *he = timers + i + HEAP0;
2162 ANHE_w (*he)->at += adjust;
2163 ANHE_at_cache (*he);
2164 }
2165}
2166
2167/* fetch new monotonic and realtime times from the kernel */
2168/* also detect if there was a timejump, and act accordingly */
2169inline_speed void
1411time_update (EV_P_ ev_tstamp max_block) 2170time_update (EV_P_ ev_tstamp max_block)
1412{ 2171{
1413 int i;
1414
1415#if EV_USE_MONOTONIC 2172#if EV_USE_MONOTONIC
1416 if (expect_true (have_monotonic)) 2173 if (expect_true (have_monotonic))
1417 { 2174 {
2175 int i;
1418 ev_tstamp odiff = rtmn_diff; 2176 ev_tstamp odiff = rtmn_diff;
1419 2177
1420 mn_now = get_clock (); 2178 mn_now = get_clock ();
1421 2179
1422 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2180 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1440 */ 2198 */
1441 for (i = 4; --i; ) 2199 for (i = 4; --i; )
1442 { 2200 {
1443 rtmn_diff = ev_rt_now - mn_now; 2201 rtmn_diff = ev_rt_now - mn_now;
1444 2202
1445 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2203 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1446 return; /* all is well */ 2204 return; /* all is well */
1447 2205
1448 ev_rt_now = ev_time (); 2206 ev_rt_now = ev_time ();
1449 mn_now = get_clock (); 2207 mn_now = get_clock ();
1450 now_floor = mn_now; 2208 now_floor = mn_now;
1451 } 2209 }
1452 2210
2211 /* no timer adjustment, as the monotonic clock doesn't jump */
2212 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1453# if EV_PERIODIC_ENABLE 2213# if EV_PERIODIC_ENABLE
1454 periodics_reschedule (EV_A); 2214 periodics_reschedule (EV_A);
1455# endif 2215# endif
1456 /* no timer adjustment, as the monotonic clock doesn't jump */
1457 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1458 } 2216 }
1459 else 2217 else
1460#endif 2218#endif
1461 { 2219 {
1462 ev_rt_now = ev_time (); 2220 ev_rt_now = ev_time ();
1463 2221
1464 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2222 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1465 { 2223 {
2224 /* adjust timers. this is easy, as the offset is the same for all of them */
2225 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1466#if EV_PERIODIC_ENABLE 2226#if EV_PERIODIC_ENABLE
1467 periodics_reschedule (EV_A); 2227 periodics_reschedule (EV_A);
1468#endif 2228#endif
1469 /* adjust timers. this is easy, as the offset is the same for all of them */
1470 for (i = 0; i < timercnt; ++i)
1471 ((WT)timers [i])->at += ev_rt_now - mn_now;
1472 } 2229 }
1473 2230
1474 mn_now = ev_rt_now; 2231 mn_now = ev_rt_now;
1475 } 2232 }
1476} 2233}
1477 2234
1478void 2235void
1479ev_ref (EV_P)
1480{
1481 ++activecnt;
1482}
1483
1484void
1485ev_unref (EV_P)
1486{
1487 --activecnt;
1488}
1489
1490static int loop_done;
1491
1492void
1493ev_loop (EV_P_ int flags) 2236ev_loop (EV_P_ int flags)
1494{ 2237{
1495 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2238#if EV_MINIMAL < 2
1496 ? EVUNLOOP_ONE 2239 ++loop_depth;
1497 : EVUNLOOP_CANCEL; 2240#endif
1498 2241
2242 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2243
2244 loop_done = EVUNLOOP_CANCEL;
2245
1499 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2246 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1500 2247
1501 do 2248 do
1502 { 2249 {
2250#if EV_VERIFY >= 2
2251 ev_loop_verify (EV_A);
2252#endif
2253
1503#ifndef _WIN32 2254#ifndef _WIN32
1504 if (expect_false (curpid)) /* penalise the forking check even more */ 2255 if (expect_false (curpid)) /* penalise the forking check even more */
1505 if (expect_false (getpid () != curpid)) 2256 if (expect_false (getpid () != curpid))
1506 { 2257 {
1507 curpid = getpid (); 2258 curpid = getpid ();
… …
1513 /* we might have forked, so queue fork handlers */ 2264 /* we might have forked, so queue fork handlers */
1514 if (expect_false (postfork)) 2265 if (expect_false (postfork))
1515 if (forkcnt) 2266 if (forkcnt)
1516 { 2267 {
1517 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2268 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1518 call_pending (EV_A); 2269 EV_INVOKE_PENDING;
1519 } 2270 }
1520#endif 2271#endif
1521 2272
1522 /* queue prepare watchers (and execute them) */ 2273 /* queue prepare watchers (and execute them) */
1523 if (expect_false (preparecnt)) 2274 if (expect_false (preparecnt))
1524 { 2275 {
1525 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2276 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1526 call_pending (EV_A); 2277 EV_INVOKE_PENDING;
1527 } 2278 }
1528 2279
1529 if (expect_false (!activecnt)) 2280 if (expect_false (loop_done))
1530 break; 2281 break;
1531 2282
1532 /* we might have forked, so reify kernel state if necessary */ 2283 /* we might have forked, so reify kernel state if necessary */
1533 if (expect_false (postfork)) 2284 if (expect_false (postfork))
1534 loop_fork (EV_A); 2285 loop_fork (EV_A);
… …
1541 ev_tstamp waittime = 0.; 2292 ev_tstamp waittime = 0.;
1542 ev_tstamp sleeptime = 0.; 2293 ev_tstamp sleeptime = 0.;
1543 2294
1544 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2295 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1545 { 2296 {
2297 /* remember old timestamp for io_blocktime calculation */
2298 ev_tstamp prev_mn_now = mn_now;
2299
1546 /* update time to cancel out callback processing overhead */ 2300 /* update time to cancel out callback processing overhead */
1547 time_update (EV_A_ 1e100); 2301 time_update (EV_A_ 1e100);
1548 2302
1549 waittime = MAX_BLOCKTIME; 2303 waittime = MAX_BLOCKTIME;
1550 2304
1551 if (timercnt) 2305 if (timercnt)
1552 { 2306 {
1553 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2307 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1554 if (waittime > to) waittime = to; 2308 if (waittime > to) waittime = to;
1555 } 2309 }
1556 2310
1557#if EV_PERIODIC_ENABLE 2311#if EV_PERIODIC_ENABLE
1558 if (periodiccnt) 2312 if (periodiccnt)
1559 { 2313 {
1560 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2314 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1561 if (waittime > to) waittime = to; 2315 if (waittime > to) waittime = to;
1562 } 2316 }
1563#endif 2317#endif
1564 2318
2319 /* don't let timeouts decrease the waittime below timeout_blocktime */
1565 if (expect_false (waittime < timeout_blocktime)) 2320 if (expect_false (waittime < timeout_blocktime))
1566 waittime = timeout_blocktime; 2321 waittime = timeout_blocktime;
1567 2322
1568 sleeptime = waittime - backend_fudge; 2323 /* extra check because io_blocktime is commonly 0 */
1569
1570 if (expect_true (sleeptime > io_blocktime)) 2324 if (expect_false (io_blocktime))
1571 sleeptime = io_blocktime;
1572
1573 if (sleeptime)
1574 { 2325 {
2326 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2327
2328 if (sleeptime > waittime - backend_fudge)
2329 sleeptime = waittime - backend_fudge;
2330
2331 if (expect_true (sleeptime > 0.))
2332 {
1575 ev_sleep (sleeptime); 2333 ev_sleep (sleeptime);
1576 waittime -= sleeptime; 2334 waittime -= sleeptime;
2335 }
1577 } 2336 }
1578 } 2337 }
1579 2338
2339#if EV_MINIMAL < 2
1580 ++loop_count; 2340 ++loop_count;
2341#endif
2342 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1581 backend_poll (EV_A_ waittime); 2343 backend_poll (EV_A_ waittime);
2344 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1582 2345
1583 /* update ev_rt_now, do magic */ 2346 /* update ev_rt_now, do magic */
1584 time_update (EV_A_ waittime + sleeptime); 2347 time_update (EV_A_ waittime + sleeptime);
1585 } 2348 }
1586 2349
… …
1597 2360
1598 /* queue check watchers, to be executed first */ 2361 /* queue check watchers, to be executed first */
1599 if (expect_false (checkcnt)) 2362 if (expect_false (checkcnt))
1600 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2363 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1601 2364
1602 call_pending (EV_A); 2365 EV_INVOKE_PENDING;
1603
1604 } 2366 }
1605 while (expect_true (activecnt && !loop_done)); 2367 while (expect_true (
2368 activecnt
2369 && !loop_done
2370 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2371 ));
1606 2372
1607 if (loop_done == EVUNLOOP_ONE) 2373 if (loop_done == EVUNLOOP_ONE)
1608 loop_done = EVUNLOOP_CANCEL; 2374 loop_done = EVUNLOOP_CANCEL;
2375
2376#if EV_MINIMAL < 2
2377 --loop_depth;
2378#endif
1609} 2379}
1610 2380
1611void 2381void
1612ev_unloop (EV_P_ int how) 2382ev_unloop (EV_P_ int how)
1613{ 2383{
1614 loop_done = how; 2384 loop_done = how;
1615} 2385}
1616 2386
2387void
2388ev_ref (EV_P)
2389{
2390 ++activecnt;
2391}
2392
2393void
2394ev_unref (EV_P)
2395{
2396 --activecnt;
2397}
2398
2399void
2400ev_now_update (EV_P)
2401{
2402 time_update (EV_A_ 1e100);
2403}
2404
2405void
2406ev_suspend (EV_P)
2407{
2408 ev_now_update (EV_A);
2409}
2410
2411void
2412ev_resume (EV_P)
2413{
2414 ev_tstamp mn_prev = mn_now;
2415
2416 ev_now_update (EV_A);
2417 timers_reschedule (EV_A_ mn_now - mn_prev);
2418#if EV_PERIODIC_ENABLE
2419 /* TODO: really do this? */
2420 periodics_reschedule (EV_A);
2421#endif
2422}
2423
1617/*****************************************************************************/ 2424/*****************************************************************************/
2425/* singly-linked list management, used when the expected list length is short */
1618 2426
1619void inline_size 2427inline_size void
1620wlist_add (WL *head, WL elem) 2428wlist_add (WL *head, WL elem)
1621{ 2429{
1622 elem->next = *head; 2430 elem->next = *head;
1623 *head = elem; 2431 *head = elem;
1624} 2432}
1625 2433
1626void inline_size 2434inline_size void
1627wlist_del (WL *head, WL elem) 2435wlist_del (WL *head, WL elem)
1628{ 2436{
1629 while (*head) 2437 while (*head)
1630 { 2438 {
1631 if (*head == elem) 2439 if (expect_true (*head == elem))
1632 { 2440 {
1633 *head = elem->next; 2441 *head = elem->next;
1634 return; 2442 break;
1635 } 2443 }
1636 2444
1637 head = &(*head)->next; 2445 head = &(*head)->next;
1638 } 2446 }
1639} 2447}
1640 2448
1641void inline_speed 2449/* internal, faster, version of ev_clear_pending */
2450inline_speed void
1642clear_pending (EV_P_ W w) 2451clear_pending (EV_P_ W w)
1643{ 2452{
1644 if (w->pending) 2453 if (w->pending)
1645 { 2454 {
1646 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2455 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1647 w->pending = 0; 2456 w->pending = 0;
1648 } 2457 }
1649} 2458}
1650 2459
1651int 2460int
… …
1655 int pending = w_->pending; 2464 int pending = w_->pending;
1656 2465
1657 if (expect_true (pending)) 2466 if (expect_true (pending))
1658 { 2467 {
1659 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2468 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2469 p->w = (W)&pending_w;
1660 w_->pending = 0; 2470 w_->pending = 0;
1661 p->w = 0;
1662 return p->events; 2471 return p->events;
1663 } 2472 }
1664 else 2473 else
1665 return 0; 2474 return 0;
1666} 2475}
1667 2476
1668void inline_size 2477inline_size void
1669pri_adjust (EV_P_ W w) 2478pri_adjust (EV_P_ W w)
1670{ 2479{
1671 int pri = w->priority; 2480 int pri = ev_priority (w);
1672 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2481 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1673 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2482 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1674 w->priority = pri; 2483 ev_set_priority (w, pri);
1675} 2484}
1676 2485
1677void inline_speed 2486inline_speed void
1678ev_start (EV_P_ W w, int active) 2487ev_start (EV_P_ W w, int active)
1679{ 2488{
1680 pri_adjust (EV_A_ w); 2489 pri_adjust (EV_A_ w);
1681 w->active = active; 2490 w->active = active;
1682 ev_ref (EV_A); 2491 ev_ref (EV_A);
1683} 2492}
1684 2493
1685void inline_size 2494inline_size void
1686ev_stop (EV_P_ W w) 2495ev_stop (EV_P_ W w)
1687{ 2496{
1688 ev_unref (EV_A); 2497 ev_unref (EV_A);
1689 w->active = 0; 2498 w->active = 0;
1690} 2499}
… …
1697 int fd = w->fd; 2506 int fd = w->fd;
1698 2507
1699 if (expect_false (ev_is_active (w))) 2508 if (expect_false (ev_is_active (w)))
1700 return; 2509 return;
1701 2510
1702 assert (("ev_io_start called with negative fd", fd >= 0)); 2511 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2512 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2513
2514 EV_FREQUENT_CHECK;
1703 2515
1704 ev_start (EV_A_ (W)w, 1); 2516 ev_start (EV_A_ (W)w, 1);
1705 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2517 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1706 wlist_add (&anfds[fd].head, (WL)w); 2518 wlist_add (&anfds[fd].head, (WL)w);
1707 2519
1708 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2520 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1709 w->events &= ~EV_IOFDSET; 2521 w->events &= ~EV__IOFDSET;
2522
2523 EV_FREQUENT_CHECK;
1710} 2524}
1711 2525
1712void noinline 2526void noinline
1713ev_io_stop (EV_P_ ev_io *w) 2527ev_io_stop (EV_P_ ev_io *w)
1714{ 2528{
1715 clear_pending (EV_A_ (W)w); 2529 clear_pending (EV_A_ (W)w);
1716 if (expect_false (!ev_is_active (w))) 2530 if (expect_false (!ev_is_active (w)))
1717 return; 2531 return;
1718 2532
1719 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2533 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2534
2535 EV_FREQUENT_CHECK;
1720 2536
1721 wlist_del (&anfds[w->fd].head, (WL)w); 2537 wlist_del (&anfds[w->fd].head, (WL)w);
1722 ev_stop (EV_A_ (W)w); 2538 ev_stop (EV_A_ (W)w);
1723 2539
1724 fd_change (EV_A_ w->fd, 1); 2540 fd_change (EV_A_ w->fd, 1);
2541
2542 EV_FREQUENT_CHECK;
1725} 2543}
1726 2544
1727void noinline 2545void noinline
1728ev_timer_start (EV_P_ ev_timer *w) 2546ev_timer_start (EV_P_ ev_timer *w)
1729{ 2547{
1730 if (expect_false (ev_is_active (w))) 2548 if (expect_false (ev_is_active (w)))
1731 return; 2549 return;
1732 2550
1733 ((WT)w)->at += mn_now; 2551 ev_at (w) += mn_now;
1734 2552
1735 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2553 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1736 2554
2555 EV_FREQUENT_CHECK;
2556
2557 ++timercnt;
1737 ev_start (EV_A_ (W)w, ++timercnt); 2558 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1738 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2559 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1739 timers [timercnt - 1] = (WT)w; 2560 ANHE_w (timers [ev_active (w)]) = (WT)w;
1740 upheap (timers, timercnt - 1); 2561 ANHE_at_cache (timers [ev_active (w)]);
2562 upheap (timers, ev_active (w));
1741 2563
2564 EV_FREQUENT_CHECK;
2565
1742 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2566 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1743} 2567}
1744 2568
1745void noinline 2569void noinline
1746ev_timer_stop (EV_P_ ev_timer *w) 2570ev_timer_stop (EV_P_ ev_timer *w)
1747{ 2571{
1748 clear_pending (EV_A_ (W)w); 2572 clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w))) 2573 if (expect_false (!ev_is_active (w)))
1750 return; 2574 return;
1751 2575
1752 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2576 EV_FREQUENT_CHECK;
1753 2577
1754 { 2578 {
1755 int active = ((W)w)->active; 2579 int active = ev_active (w);
1756 2580
2581 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2582
2583 --timercnt;
2584
1757 if (expect_true (--active < --timercnt)) 2585 if (expect_true (active < timercnt + HEAP0))
1758 { 2586 {
1759 timers [active] = timers [timercnt]; 2587 timers [active] = timers [timercnt + HEAP0];
1760 adjustheap (timers, timercnt, active); 2588 adjustheap (timers, timercnt, active);
1761 } 2589 }
1762 } 2590 }
1763 2591
1764 ((WT)w)->at -= mn_now; 2592 EV_FREQUENT_CHECK;
2593
2594 ev_at (w) -= mn_now;
1765 2595
1766 ev_stop (EV_A_ (W)w); 2596 ev_stop (EV_A_ (W)w);
1767} 2597}
1768 2598
1769void noinline 2599void noinline
1770ev_timer_again (EV_P_ ev_timer *w) 2600ev_timer_again (EV_P_ ev_timer *w)
1771{ 2601{
2602 EV_FREQUENT_CHECK;
2603
1772 if (ev_is_active (w)) 2604 if (ev_is_active (w))
1773 { 2605 {
1774 if (w->repeat) 2606 if (w->repeat)
1775 { 2607 {
1776 ((WT)w)->at = mn_now + w->repeat; 2608 ev_at (w) = mn_now + w->repeat;
2609 ANHE_at_cache (timers [ev_active (w)]);
1777 adjustheap (timers, timercnt, ((W)w)->active - 1); 2610 adjustheap (timers, timercnt, ev_active (w));
1778 } 2611 }
1779 else 2612 else
1780 ev_timer_stop (EV_A_ w); 2613 ev_timer_stop (EV_A_ w);
1781 } 2614 }
1782 else if (w->repeat) 2615 else if (w->repeat)
1783 { 2616 {
1784 w->at = w->repeat; 2617 ev_at (w) = w->repeat;
1785 ev_timer_start (EV_A_ w); 2618 ev_timer_start (EV_A_ w);
1786 } 2619 }
2620
2621 EV_FREQUENT_CHECK;
2622}
2623
2624ev_tstamp
2625ev_timer_remaining (EV_P_ ev_timer *w)
2626{
2627 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1787} 2628}
1788 2629
1789#if EV_PERIODIC_ENABLE 2630#if EV_PERIODIC_ENABLE
1790void noinline 2631void noinline
1791ev_periodic_start (EV_P_ ev_periodic *w) 2632ev_periodic_start (EV_P_ ev_periodic *w)
1792{ 2633{
1793 if (expect_false (ev_is_active (w))) 2634 if (expect_false (ev_is_active (w)))
1794 return; 2635 return;
1795 2636
1796 if (w->reschedule_cb) 2637 if (w->reschedule_cb)
1797 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2638 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1798 else if (w->interval) 2639 else if (w->interval)
1799 { 2640 {
1800 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2641 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1801 /* this formula differs from the one in periodic_reify because we do not always round up */ 2642 /* this formula differs from the one in periodic_reify because we do not always round up */
1802 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1803 } 2644 }
1804 else 2645 else
1805 ((WT)w)->at = w->offset; 2646 ev_at (w) = w->offset;
1806 2647
2648 EV_FREQUENT_CHECK;
2649
2650 ++periodiccnt;
1807 ev_start (EV_A_ (W)w, ++periodiccnt); 2651 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1808 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2652 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1809 periodics [periodiccnt - 1] = (WT)w; 2653 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1810 upheap (periodics, periodiccnt - 1); 2654 ANHE_at_cache (periodics [ev_active (w)]);
2655 upheap (periodics, ev_active (w));
1811 2656
2657 EV_FREQUENT_CHECK;
2658
1812 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2659 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1813} 2660}
1814 2661
1815void noinline 2662void noinline
1816ev_periodic_stop (EV_P_ ev_periodic *w) 2663ev_periodic_stop (EV_P_ ev_periodic *w)
1817{ 2664{
1818 clear_pending (EV_A_ (W)w); 2665 clear_pending (EV_A_ (W)w);
1819 if (expect_false (!ev_is_active (w))) 2666 if (expect_false (!ev_is_active (w)))
1820 return; 2667 return;
1821 2668
1822 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2669 EV_FREQUENT_CHECK;
1823 2670
1824 { 2671 {
1825 int active = ((W)w)->active; 2672 int active = ev_active (w);
1826 2673
2674 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2675
2676 --periodiccnt;
2677
1827 if (expect_true (--active < --periodiccnt)) 2678 if (expect_true (active < periodiccnt + HEAP0))
1828 { 2679 {
1829 periodics [active] = periodics [periodiccnt]; 2680 periodics [active] = periodics [periodiccnt + HEAP0];
1830 adjustheap (periodics, periodiccnt, active); 2681 adjustheap (periodics, periodiccnt, active);
1831 } 2682 }
1832 } 2683 }
1833 2684
2685 EV_FREQUENT_CHECK;
2686
1834 ev_stop (EV_A_ (W)w); 2687 ev_stop (EV_A_ (W)w);
1835} 2688}
1836 2689
1837void noinline 2690void noinline
1838ev_periodic_again (EV_P_ ev_periodic *w) 2691ev_periodic_again (EV_P_ ev_periodic *w)
… …
1848#endif 2701#endif
1849 2702
1850void noinline 2703void noinline
1851ev_signal_start (EV_P_ ev_signal *w) 2704ev_signal_start (EV_P_ ev_signal *w)
1852{ 2705{
1853#if EV_MULTIPLICITY
1854 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1855#endif
1856 if (expect_false (ev_is_active (w))) 2706 if (expect_false (ev_is_active (w)))
1857 return; 2707 return;
1858 2708
1859 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2709 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1860 2710
2711#if EV_MULTIPLICITY
2712 assert (("libev: a signal must not be attached to two different loops",
2713 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2714
2715 signals [w->signum - 1].loop = EV_A;
2716#endif
2717
2718 EV_FREQUENT_CHECK;
2719
2720#if EV_USE_SIGNALFD
2721 if (sigfd == -2)
1861 { 2722 {
1862#ifndef _WIN32 2723 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1863 sigset_t full, prev; 2724 if (sigfd < 0 && errno == EINVAL)
1864 sigfillset (&full); 2725 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1865 sigprocmask (SIG_SETMASK, &full, &prev);
1866#endif
1867 2726
1868 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2727 if (sigfd >= 0)
2728 {
2729 fd_intern (sigfd); /* doing it twice will not hurt */
1869 2730
1870#ifndef _WIN32 2731 sigemptyset (&sigfd_set);
1871 sigprocmask (SIG_SETMASK, &prev, 0); 2732
1872#endif 2733 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2734 ev_set_priority (&sigfd_w, EV_MAXPRI);
2735 ev_io_start (EV_A_ &sigfd_w);
2736 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2737 }
1873 } 2738 }
2739
2740 if (sigfd >= 0)
2741 {
2742 /* TODO: check .head */
2743 sigaddset (&sigfd_set, w->signum);
2744 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2745
2746 signalfd (sigfd, &sigfd_set, 0);
2747 }
2748#endif
1874 2749
1875 ev_start (EV_A_ (W)w, 1); 2750 ev_start (EV_A_ (W)w, 1);
1876 wlist_add (&signals [w->signum - 1].head, (WL)w); 2751 wlist_add (&signals [w->signum - 1].head, (WL)w);
1877 2752
1878 if (!((WL)w)->next) 2753 if (!((WL)w)->next)
2754# if EV_USE_SIGNALFD
2755 if (sigfd < 0) /*TODO*/
2756# endif
1879 { 2757 {
1880#if _WIN32 2758# ifdef _WIN32
2759 evpipe_init (EV_A);
2760
1881 signal (w->signum, sighandler); 2761 signal (w->signum, ev_sighandler);
1882#else 2762# else
1883 struct sigaction sa; 2763 struct sigaction sa;
2764
2765 evpipe_init (EV_A);
2766
1884 sa.sa_handler = sighandler; 2767 sa.sa_handler = ev_sighandler;
1885 sigfillset (&sa.sa_mask); 2768 sigfillset (&sa.sa_mask);
1886 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2769 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1887 sigaction (w->signum, &sa, 0); 2770 sigaction (w->signum, &sa, 0);
2771
2772 sigemptyset (&sa.sa_mask);
2773 sigaddset (&sa.sa_mask, w->signum);
2774 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1888#endif 2775#endif
1889 } 2776 }
2777
2778 EV_FREQUENT_CHECK;
1890} 2779}
1891 2780
1892void noinline 2781void noinline
1893ev_signal_stop (EV_P_ ev_signal *w) 2782ev_signal_stop (EV_P_ ev_signal *w)
1894{ 2783{
1895 clear_pending (EV_A_ (W)w); 2784 clear_pending (EV_A_ (W)w);
1896 if (expect_false (!ev_is_active (w))) 2785 if (expect_false (!ev_is_active (w)))
1897 return; 2786 return;
1898 2787
2788 EV_FREQUENT_CHECK;
2789
1899 wlist_del (&signals [w->signum - 1].head, (WL)w); 2790 wlist_del (&signals [w->signum - 1].head, (WL)w);
1900 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
1901 2792
1902 if (!signals [w->signum - 1].head) 2793 if (!signals [w->signum - 1].head)
2794 {
2795#if EV_MULTIPLICITY
2796 signals [w->signum - 1].loop = 0; /* unattach from signal */
2797#endif
2798#if EV_USE_SIGNALFD
2799 if (sigfd >= 0)
2800 {
2801 sigset_t ss;
2802
2803 sigemptyset (&ss);
2804 sigaddset (&ss, w->signum);
2805 sigdelset (&sigfd_set, w->signum);
2806
2807 signalfd (sigfd, &sigfd_set, 0);
2808 sigprocmask (SIG_UNBLOCK, &ss, 0);
2809 }
2810 else
2811#endif
1903 signal (w->signum, SIG_DFL); 2812 signal (w->signum, SIG_DFL);
2813 }
2814
2815 EV_FREQUENT_CHECK;
1904} 2816}
1905 2817
1906void 2818void
1907ev_child_start (EV_P_ ev_child *w) 2819ev_child_start (EV_P_ ev_child *w)
1908{ 2820{
1909#if EV_MULTIPLICITY 2821#if EV_MULTIPLICITY
1910 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2822 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1911#endif 2823#endif
1912 if (expect_false (ev_is_active (w))) 2824 if (expect_false (ev_is_active (w)))
1913 return; 2825 return;
1914 2826
2827 EV_FREQUENT_CHECK;
2828
1915 ev_start (EV_A_ (W)w, 1); 2829 ev_start (EV_A_ (W)w, 1);
1916 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2830 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2831
2832 EV_FREQUENT_CHECK;
1917} 2833}
1918 2834
1919void 2835void
1920ev_child_stop (EV_P_ ev_child *w) 2836ev_child_stop (EV_P_ ev_child *w)
1921{ 2837{
1922 clear_pending (EV_A_ (W)w); 2838 clear_pending (EV_A_ (W)w);
1923 if (expect_false (!ev_is_active (w))) 2839 if (expect_false (!ev_is_active (w)))
1924 return; 2840 return;
1925 2841
2842 EV_FREQUENT_CHECK;
2843
1926 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2844 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1927 ev_stop (EV_A_ (W)w); 2845 ev_stop (EV_A_ (W)w);
2846
2847 EV_FREQUENT_CHECK;
1928} 2848}
1929 2849
1930#if EV_STAT_ENABLE 2850#if EV_STAT_ENABLE
1931 2851
1932# ifdef _WIN32 2852# ifdef _WIN32
1933# undef lstat 2853# undef lstat
1934# define lstat(a,b) _stati64 (a,b) 2854# define lstat(a,b) _stati64 (a,b)
1935# endif 2855# endif
1936 2856
1937#define DEF_STAT_INTERVAL 5.0074891 2857#define DEF_STAT_INTERVAL 5.0074891
2858#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1938#define MIN_STAT_INTERVAL 0.1074891 2859#define MIN_STAT_INTERVAL 0.1074891
1939 2860
1940static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2861static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1941 2862
1942#if EV_USE_INOTIFY 2863#if EV_USE_INOTIFY
1943# define EV_INOTIFY_BUFSIZE 8192 2864# define EV_INOTIFY_BUFSIZE 8192
… …
1945static void noinline 2866static void noinline
1946infy_add (EV_P_ ev_stat *w) 2867infy_add (EV_P_ ev_stat *w)
1947{ 2868{
1948 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); 2869 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);
1949 2870
1950 if (w->wd < 0) 2871 if (w->wd >= 0)
2872 {
2873 struct statfs sfs;
2874
2875 /* now local changes will be tracked by inotify, but remote changes won't */
2876 /* unless the filesystem is known to be local, we therefore still poll */
2877 /* also do poll on <2.6.25, but with normal frequency */
2878
2879 if (!fs_2625)
2880 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2881 else if (!statfs (w->path, &sfs)
2882 && (sfs.f_type == 0x1373 /* devfs */
2883 || sfs.f_type == 0xEF53 /* ext2/3 */
2884 || sfs.f_type == 0x3153464a /* jfs */
2885 || sfs.f_type == 0x52654973 /* reiser3 */
2886 || sfs.f_type == 0x01021994 /* tempfs */
2887 || sfs.f_type == 0x58465342 /* xfs */))
2888 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2889 else
2890 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1951 { 2891 }
1952 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2892 else
2893 {
2894 /* can't use inotify, continue to stat */
2895 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1953 2896
1954 /* monitor some parent directory for speedup hints */ 2897 /* if path is not there, monitor some parent directory for speedup hints */
2898 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2899 /* but an efficiency issue only */
1955 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2900 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1956 { 2901 {
1957 char path [4096]; 2902 char path [4096];
1958 strcpy (path, w->path); 2903 strcpy (path, w->path);
1959 2904
… …
1962 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2907 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1963 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2908 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1964 2909
1965 char *pend = strrchr (path, '/'); 2910 char *pend = strrchr (path, '/');
1966 2911
1967 if (!pend) 2912 if (!pend || pend == path)
1968 break; /* whoops, no '/', complain to your admin */ 2913 break;
1969 2914
1970 *pend = 0; 2915 *pend = 0;
1971 w->wd = inotify_add_watch (fs_fd, path, mask); 2916 w->wd = inotify_add_watch (fs_fd, path, mask);
1972 } 2917 }
1973 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2918 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1974 } 2919 }
1975 } 2920 }
1976 else
1977 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1978 2921
1979 if (w->wd >= 0) 2922 if (w->wd >= 0)
1980 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2923 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2924
2925 /* now re-arm timer, if required */
2926 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2927 ev_timer_again (EV_A_ &w->timer);
2928 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1981} 2929}
1982 2930
1983static void noinline 2931static void noinline
1984infy_del (EV_P_ ev_stat *w) 2932infy_del (EV_P_ ev_stat *w)
1985{ 2933{
… …
1999 2947
2000static void noinline 2948static void noinline
2001infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2949infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2002{ 2950{
2003 if (slot < 0) 2951 if (slot < 0)
2004 /* overflow, need to check for all hahs slots */ 2952 /* overflow, need to check for all hash slots */
2005 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2953 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2006 infy_wd (EV_A_ slot, wd, ev); 2954 infy_wd (EV_A_ slot, wd, ev);
2007 else 2955 else
2008 { 2956 {
2009 WL w_; 2957 WL w_;
… …
2015 2963
2016 if (w->wd == wd || wd == -1) 2964 if (w->wd == wd || wd == -1)
2017 { 2965 {
2018 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2966 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2019 { 2967 {
2968 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2020 w->wd = -1; 2969 w->wd = -1;
2021 infy_add (EV_A_ w); /* re-add, no matter what */ 2970 infy_add (EV_A_ w); /* re-add, no matter what */
2022 } 2971 }
2023 2972
2024 stat_timer_cb (EV_A_ &w->timer, 0); 2973 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2037 2986
2038 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2987 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2039 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2988 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2040} 2989}
2041 2990
2042void inline_size 2991inline_size void
2992check_2625 (EV_P)
2993{
2994 /* kernels < 2.6.25 are borked
2995 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2996 */
2997 struct utsname buf;
2998 int major, minor, micro;
2999
3000 if (uname (&buf))
3001 return;
3002
3003 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3004 return;
3005
3006 if (major < 2
3007 || (major == 2 && minor < 6)
3008 || (major == 2 && minor == 6 && micro < 25))
3009 return;
3010
3011 fs_2625 = 1;
3012}
3013
3014inline_size int
3015infy_newfd (void)
3016{
3017#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3018 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3019 if (fd >= 0)
3020 return fd;
3021#endif
3022 return inotify_init ();
3023}
3024
3025inline_size void
2043infy_init (EV_P) 3026infy_init (EV_P)
2044{ 3027{
2045 if (fs_fd != -2) 3028 if (fs_fd != -2)
2046 return; 3029 return;
2047 3030
3031 fs_fd = -1;
3032
3033 check_2625 (EV_A);
3034
2048 fs_fd = inotify_init (); 3035 fs_fd = infy_newfd ();
2049 3036
2050 if (fs_fd >= 0) 3037 if (fs_fd >= 0)
2051 { 3038 {
3039 fd_intern (fs_fd);
2052 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3040 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2053 ev_set_priority (&fs_w, EV_MAXPRI); 3041 ev_set_priority (&fs_w, EV_MAXPRI);
2054 ev_io_start (EV_A_ &fs_w); 3042 ev_io_start (EV_A_ &fs_w);
3043 ev_unref (EV_A);
2055 } 3044 }
2056} 3045}
2057 3046
2058void inline_size 3047inline_size void
2059infy_fork (EV_P) 3048infy_fork (EV_P)
2060{ 3049{
2061 int slot; 3050 int slot;
2062 3051
2063 if (fs_fd < 0) 3052 if (fs_fd < 0)
2064 return; 3053 return;
2065 3054
3055 ev_ref (EV_A);
3056 ev_io_stop (EV_A_ &fs_w);
2066 close (fs_fd); 3057 close (fs_fd);
2067 fs_fd = inotify_init (); 3058 fs_fd = infy_newfd ();
3059
3060 if (fs_fd >= 0)
3061 {
3062 fd_intern (fs_fd);
3063 ev_io_set (&fs_w, fs_fd, EV_READ);
3064 ev_io_start (EV_A_ &fs_w);
3065 ev_unref (EV_A);
3066 }
2068 3067
2069 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3068 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2070 { 3069 {
2071 WL w_ = fs_hash [slot].head; 3070 WL w_ = fs_hash [slot].head;
2072 fs_hash [slot].head = 0; 3071 fs_hash [slot].head = 0;
… …
2079 w->wd = -1; 3078 w->wd = -1;
2080 3079
2081 if (fs_fd >= 0) 3080 if (fs_fd >= 0)
2082 infy_add (EV_A_ w); /* re-add, no matter what */ 3081 infy_add (EV_A_ w); /* re-add, no matter what */
2083 else 3082 else
3083 {
3084 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3085 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2084 ev_timer_start (EV_A_ &w->timer); 3086 ev_timer_again (EV_A_ &w->timer);
3087 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3088 }
2085 } 3089 }
2086
2087 } 3090 }
2088} 3091}
2089 3092
3093#endif
3094
3095#ifdef _WIN32
3096# define EV_LSTAT(p,b) _stati64 (p, b)
3097#else
3098# define EV_LSTAT(p,b) lstat (p, b)
2090#endif 3099#endif
2091 3100
2092void 3101void
2093ev_stat_stat (EV_P_ ev_stat *w) 3102ev_stat_stat (EV_P_ ev_stat *w)
2094{ 3103{
… …
2101static void noinline 3110static void noinline
2102stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3111stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2103{ 3112{
2104 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3113 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2105 3114
2106 /* we copy this here each the time so that */ 3115 ev_statdata prev = w->attr;
2107 /* prev has the old value when the callback gets invoked */
2108 w->prev = w->attr;
2109 ev_stat_stat (EV_A_ w); 3116 ev_stat_stat (EV_A_ w);
2110 3117
2111 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3118 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2112 if ( 3119 if (
2113 w->prev.st_dev != w->attr.st_dev 3120 prev.st_dev != w->attr.st_dev
2114 || w->prev.st_ino != w->attr.st_ino 3121 || prev.st_ino != w->attr.st_ino
2115 || w->prev.st_mode != w->attr.st_mode 3122 || prev.st_mode != w->attr.st_mode
2116 || w->prev.st_nlink != w->attr.st_nlink 3123 || prev.st_nlink != w->attr.st_nlink
2117 || w->prev.st_uid != w->attr.st_uid 3124 || prev.st_uid != w->attr.st_uid
2118 || w->prev.st_gid != w->attr.st_gid 3125 || prev.st_gid != w->attr.st_gid
2119 || w->prev.st_rdev != w->attr.st_rdev 3126 || prev.st_rdev != w->attr.st_rdev
2120 || w->prev.st_size != w->attr.st_size 3127 || prev.st_size != w->attr.st_size
2121 || w->prev.st_atime != w->attr.st_atime 3128 || prev.st_atime != w->attr.st_atime
2122 || w->prev.st_mtime != w->attr.st_mtime 3129 || prev.st_mtime != w->attr.st_mtime
2123 || w->prev.st_ctime != w->attr.st_ctime 3130 || prev.st_ctime != w->attr.st_ctime
2124 ) { 3131 ) {
3132 /* we only update w->prev on actual differences */
3133 /* in case we test more often than invoke the callback, */
3134 /* to ensure that prev is always different to attr */
3135 w->prev = prev;
3136
2125 #if EV_USE_INOTIFY 3137 #if EV_USE_INOTIFY
3138 if (fs_fd >= 0)
3139 {
2126 infy_del (EV_A_ w); 3140 infy_del (EV_A_ w);
2127 infy_add (EV_A_ w); 3141 infy_add (EV_A_ w);
2128 ev_stat_stat (EV_A_ w); /* avoid race... */ 3142 ev_stat_stat (EV_A_ w); /* avoid race... */
3143 }
2129 #endif 3144 #endif
2130 3145
2131 ev_feed_event (EV_A_ w, EV_STAT); 3146 ev_feed_event (EV_A_ w, EV_STAT);
2132 } 3147 }
2133} 3148}
… …
2136ev_stat_start (EV_P_ ev_stat *w) 3151ev_stat_start (EV_P_ ev_stat *w)
2137{ 3152{
2138 if (expect_false (ev_is_active (w))) 3153 if (expect_false (ev_is_active (w)))
2139 return; 3154 return;
2140 3155
2141 /* since we use memcmp, we need to clear any padding data etc. */
2142 memset (&w->prev, 0, sizeof (ev_statdata));
2143 memset (&w->attr, 0, sizeof (ev_statdata));
2144
2145 ev_stat_stat (EV_A_ w); 3156 ev_stat_stat (EV_A_ w);
2146 3157
3158 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2147 if (w->interval < MIN_STAT_INTERVAL) 3159 w->interval = MIN_STAT_INTERVAL;
2148 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2149 3160
2150 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3161 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2151 ev_set_priority (&w->timer, ev_priority (w)); 3162 ev_set_priority (&w->timer, ev_priority (w));
2152 3163
2153#if EV_USE_INOTIFY 3164#if EV_USE_INOTIFY
2154 infy_init (EV_A); 3165 infy_init (EV_A);
2155 3166
2156 if (fs_fd >= 0) 3167 if (fs_fd >= 0)
2157 infy_add (EV_A_ w); 3168 infy_add (EV_A_ w);
2158 else 3169 else
2159#endif 3170#endif
3171 {
2160 ev_timer_start (EV_A_ &w->timer); 3172 ev_timer_again (EV_A_ &w->timer);
3173 ev_unref (EV_A);
3174 }
2161 3175
2162 ev_start (EV_A_ (W)w, 1); 3176 ev_start (EV_A_ (W)w, 1);
3177
3178 EV_FREQUENT_CHECK;
2163} 3179}
2164 3180
2165void 3181void
2166ev_stat_stop (EV_P_ ev_stat *w) 3182ev_stat_stop (EV_P_ ev_stat *w)
2167{ 3183{
2168 clear_pending (EV_A_ (W)w); 3184 clear_pending (EV_A_ (W)w);
2169 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2170 return; 3186 return;
2171 3187
3188 EV_FREQUENT_CHECK;
3189
2172#if EV_USE_INOTIFY 3190#if EV_USE_INOTIFY
2173 infy_del (EV_A_ w); 3191 infy_del (EV_A_ w);
2174#endif 3192#endif
3193
3194 if (ev_is_active (&w->timer))
3195 {
3196 ev_ref (EV_A);
2175 ev_timer_stop (EV_A_ &w->timer); 3197 ev_timer_stop (EV_A_ &w->timer);
3198 }
2176 3199
2177 ev_stop (EV_A_ (W)w); 3200 ev_stop (EV_A_ (W)w);
3201
3202 EV_FREQUENT_CHECK;
2178} 3203}
2179#endif 3204#endif
2180 3205
2181#if EV_IDLE_ENABLE 3206#if EV_IDLE_ENABLE
2182void 3207void
… …
2184{ 3209{
2185 if (expect_false (ev_is_active (w))) 3210 if (expect_false (ev_is_active (w)))
2186 return; 3211 return;
2187 3212
2188 pri_adjust (EV_A_ (W)w); 3213 pri_adjust (EV_A_ (W)w);
3214
3215 EV_FREQUENT_CHECK;
2189 3216
2190 { 3217 {
2191 int active = ++idlecnt [ABSPRI (w)]; 3218 int active = ++idlecnt [ABSPRI (w)];
2192 3219
2193 ++idleall; 3220 ++idleall;
2194 ev_start (EV_A_ (W)w, active); 3221 ev_start (EV_A_ (W)w, active);
2195 3222
2196 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3223 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2197 idles [ABSPRI (w)][active - 1] = w; 3224 idles [ABSPRI (w)][active - 1] = w;
2198 } 3225 }
3226
3227 EV_FREQUENT_CHECK;
2199} 3228}
2200 3229
2201void 3230void
2202ev_idle_stop (EV_P_ ev_idle *w) 3231ev_idle_stop (EV_P_ ev_idle *w)
2203{ 3232{
2204 clear_pending (EV_A_ (W)w); 3233 clear_pending (EV_A_ (W)w);
2205 if (expect_false (!ev_is_active (w))) 3234 if (expect_false (!ev_is_active (w)))
2206 return; 3235 return;
2207 3236
3237 EV_FREQUENT_CHECK;
3238
2208 { 3239 {
2209 int active = ((W)w)->active; 3240 int active = ev_active (w);
2210 3241
2211 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3242 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2212 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3243 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2213 3244
2214 ev_stop (EV_A_ (W)w); 3245 ev_stop (EV_A_ (W)w);
2215 --idleall; 3246 --idleall;
2216 } 3247 }
3248
3249 EV_FREQUENT_CHECK;
2217} 3250}
2218#endif 3251#endif
2219 3252
2220void 3253void
2221ev_prepare_start (EV_P_ ev_prepare *w) 3254ev_prepare_start (EV_P_ ev_prepare *w)
2222{ 3255{
2223 if (expect_false (ev_is_active (w))) 3256 if (expect_false (ev_is_active (w)))
2224 return; 3257 return;
3258
3259 EV_FREQUENT_CHECK;
2225 3260
2226 ev_start (EV_A_ (W)w, ++preparecnt); 3261 ev_start (EV_A_ (W)w, ++preparecnt);
2227 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3262 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2228 prepares [preparecnt - 1] = w; 3263 prepares [preparecnt - 1] = w;
3264
3265 EV_FREQUENT_CHECK;
2229} 3266}
2230 3267
2231void 3268void
2232ev_prepare_stop (EV_P_ ev_prepare *w) 3269ev_prepare_stop (EV_P_ ev_prepare *w)
2233{ 3270{
2234 clear_pending (EV_A_ (W)w); 3271 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 3272 if (expect_false (!ev_is_active (w)))
2236 return; 3273 return;
2237 3274
3275 EV_FREQUENT_CHECK;
3276
2238 { 3277 {
2239 int active = ((W)w)->active; 3278 int active = ev_active (w);
3279
2240 prepares [active - 1] = prepares [--preparecnt]; 3280 prepares [active - 1] = prepares [--preparecnt];
2241 ((W)prepares [active - 1])->active = active; 3281 ev_active (prepares [active - 1]) = active;
2242 } 3282 }
2243 3283
2244 ev_stop (EV_A_ (W)w); 3284 ev_stop (EV_A_ (W)w);
3285
3286 EV_FREQUENT_CHECK;
2245} 3287}
2246 3288
2247void 3289void
2248ev_check_start (EV_P_ ev_check *w) 3290ev_check_start (EV_P_ ev_check *w)
2249{ 3291{
2250 if (expect_false (ev_is_active (w))) 3292 if (expect_false (ev_is_active (w)))
2251 return; 3293 return;
3294
3295 EV_FREQUENT_CHECK;
2252 3296
2253 ev_start (EV_A_ (W)w, ++checkcnt); 3297 ev_start (EV_A_ (W)w, ++checkcnt);
2254 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3298 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2255 checks [checkcnt - 1] = w; 3299 checks [checkcnt - 1] = w;
3300
3301 EV_FREQUENT_CHECK;
2256} 3302}
2257 3303
2258void 3304void
2259ev_check_stop (EV_P_ ev_check *w) 3305ev_check_stop (EV_P_ ev_check *w)
2260{ 3306{
2261 clear_pending (EV_A_ (W)w); 3307 clear_pending (EV_A_ (W)w);
2262 if (expect_false (!ev_is_active (w))) 3308 if (expect_false (!ev_is_active (w)))
2263 return; 3309 return;
2264 3310
3311 EV_FREQUENT_CHECK;
3312
2265 { 3313 {
2266 int active = ((W)w)->active; 3314 int active = ev_active (w);
3315
2267 checks [active - 1] = checks [--checkcnt]; 3316 checks [active - 1] = checks [--checkcnt];
2268 ((W)checks [active - 1])->active = active; 3317 ev_active (checks [active - 1]) = active;
2269 } 3318 }
2270 3319
2271 ev_stop (EV_A_ (W)w); 3320 ev_stop (EV_A_ (W)w);
3321
3322 EV_FREQUENT_CHECK;
2272} 3323}
2273 3324
2274#if EV_EMBED_ENABLE 3325#if EV_EMBED_ENABLE
2275void noinline 3326void noinline
2276ev_embed_sweep (EV_P_ ev_embed *w) 3327ev_embed_sweep (EV_P_ ev_embed *w)
… …
2293embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2294{ 3345{
2295 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3346 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2296 3347
2297 { 3348 {
2298 struct ev_loop *loop = w->other; 3349 EV_P = w->other;
2299 3350
2300 while (fdchangecnt) 3351 while (fdchangecnt)
2301 { 3352 {
2302 fd_reify (EV_A); 3353 fd_reify (EV_A);
2303 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3354 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2304 } 3355 }
2305 } 3356 }
2306} 3357}
2307 3358
3359static void
3360embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3361{
3362 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3363
3364 ev_embed_stop (EV_A_ w);
3365
3366 {
3367 EV_P = w->other;
3368
3369 ev_loop_fork (EV_A);
3370 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3371 }
3372
3373 ev_embed_start (EV_A_ w);
3374}
3375
2308#if 0 3376#if 0
2309static void 3377static void
2310embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3378embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2311{ 3379{
2312 ev_idle_stop (EV_A_ idle); 3380 ev_idle_stop (EV_A_ idle);
… …
2318{ 3386{
2319 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2320 return; 3388 return;
2321 3389
2322 { 3390 {
2323 struct ev_loop *loop = w->other; 3391 EV_P = w->other;
2324 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3392 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2325 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3393 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2326 } 3394 }
3395
3396 EV_FREQUENT_CHECK;
2327 3397
2328 ev_set_priority (&w->io, ev_priority (w)); 3398 ev_set_priority (&w->io, ev_priority (w));
2329 ev_io_start (EV_A_ &w->io); 3399 ev_io_start (EV_A_ &w->io);
2330 3400
2331 ev_prepare_init (&w->prepare, embed_prepare_cb); 3401 ev_prepare_init (&w->prepare, embed_prepare_cb);
2332 ev_set_priority (&w->prepare, EV_MINPRI); 3402 ev_set_priority (&w->prepare, EV_MINPRI);
2333 ev_prepare_start (EV_A_ &w->prepare); 3403 ev_prepare_start (EV_A_ &w->prepare);
2334 3404
3405 ev_fork_init (&w->fork, embed_fork_cb);
3406 ev_fork_start (EV_A_ &w->fork);
3407
2335 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3408 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2336 3409
2337 ev_start (EV_A_ (W)w, 1); 3410 ev_start (EV_A_ (W)w, 1);
3411
3412 EV_FREQUENT_CHECK;
2338} 3413}
2339 3414
2340void 3415void
2341ev_embed_stop (EV_P_ ev_embed *w) 3416ev_embed_stop (EV_P_ ev_embed *w)
2342{ 3417{
2343 clear_pending (EV_A_ (W)w); 3418 clear_pending (EV_A_ (W)w);
2344 if (expect_false (!ev_is_active (w))) 3419 if (expect_false (!ev_is_active (w)))
2345 return; 3420 return;
2346 3421
3422 EV_FREQUENT_CHECK;
3423
2347 ev_io_stop (EV_A_ &w->io); 3424 ev_io_stop (EV_A_ &w->io);
2348 ev_prepare_stop (EV_A_ &w->prepare); 3425 ev_prepare_stop (EV_A_ &w->prepare);
3426 ev_fork_stop (EV_A_ &w->fork);
2349 3427
2350 ev_stop (EV_A_ (W)w); 3428 EV_FREQUENT_CHECK;
2351} 3429}
2352#endif 3430#endif
2353 3431
2354#if EV_FORK_ENABLE 3432#if EV_FORK_ENABLE
2355void 3433void
2356ev_fork_start (EV_P_ ev_fork *w) 3434ev_fork_start (EV_P_ ev_fork *w)
2357{ 3435{
2358 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2359 return; 3437 return;
3438
3439 EV_FREQUENT_CHECK;
2360 3440
2361 ev_start (EV_A_ (W)w, ++forkcnt); 3441 ev_start (EV_A_ (W)w, ++forkcnt);
2362 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3442 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2363 forks [forkcnt - 1] = w; 3443 forks [forkcnt - 1] = w;
3444
3445 EV_FREQUENT_CHECK;
2364} 3446}
2365 3447
2366void 3448void
2367ev_fork_stop (EV_P_ ev_fork *w) 3449ev_fork_stop (EV_P_ ev_fork *w)
2368{ 3450{
2369 clear_pending (EV_A_ (W)w); 3451 clear_pending (EV_A_ (W)w);
2370 if (expect_false (!ev_is_active (w))) 3452 if (expect_false (!ev_is_active (w)))
2371 return; 3453 return;
2372 3454
3455 EV_FREQUENT_CHECK;
3456
2373 { 3457 {
2374 int active = ((W)w)->active; 3458 int active = ev_active (w);
3459
2375 forks [active - 1] = forks [--forkcnt]; 3460 forks [active - 1] = forks [--forkcnt];
2376 ((W)forks [active - 1])->active = active; 3461 ev_active (forks [active - 1]) = active;
2377 } 3462 }
2378 3463
2379 ev_stop (EV_A_ (W)w); 3464 ev_stop (EV_A_ (W)w);
3465
3466 EV_FREQUENT_CHECK;
3467}
3468#endif
3469
3470#if EV_ASYNC_ENABLE
3471void
3472ev_async_start (EV_P_ ev_async *w)
3473{
3474 if (expect_false (ev_is_active (w)))
3475 return;
3476
3477 evpipe_init (EV_A);
3478
3479 EV_FREQUENT_CHECK;
3480
3481 ev_start (EV_A_ (W)w, ++asynccnt);
3482 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3483 asyncs [asynccnt - 1] = w;
3484
3485 EV_FREQUENT_CHECK;
3486}
3487
3488void
3489ev_async_stop (EV_P_ ev_async *w)
3490{
3491 clear_pending (EV_A_ (W)w);
3492 if (expect_false (!ev_is_active (w)))
3493 return;
3494
3495 EV_FREQUENT_CHECK;
3496
3497 {
3498 int active = ev_active (w);
3499
3500 asyncs [active - 1] = asyncs [--asynccnt];
3501 ev_active (asyncs [active - 1]) = active;
3502 }
3503
3504 ev_stop (EV_A_ (W)w);
3505
3506 EV_FREQUENT_CHECK;
3507}
3508
3509void
3510ev_async_send (EV_P_ ev_async *w)
3511{
3512 w->sent = 1;
3513 evpipe_write (EV_A_ &async_pending);
2380} 3514}
2381#endif 3515#endif
2382 3516
2383/*****************************************************************************/ 3517/*****************************************************************************/
2384 3518
… …
2394once_cb (EV_P_ struct ev_once *once, int revents) 3528once_cb (EV_P_ struct ev_once *once, int revents)
2395{ 3529{
2396 void (*cb)(int revents, void *arg) = once->cb; 3530 void (*cb)(int revents, void *arg) = once->cb;
2397 void *arg = once->arg; 3531 void *arg = once->arg;
2398 3532
2399 ev_io_stop (EV_A_ &once->io); 3533 ev_io_stop (EV_A_ &once->io);
2400 ev_timer_stop (EV_A_ &once->to); 3534 ev_timer_stop (EV_A_ &once->to);
2401 ev_free (once); 3535 ev_free (once);
2402 3536
2403 cb (revents, arg); 3537 cb (revents, arg);
2404} 3538}
2405 3539
2406static void 3540static void
2407once_cb_io (EV_P_ ev_io *w, int revents) 3541once_cb_io (EV_P_ ev_io *w, int revents)
2408{ 3542{
2409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3543 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3544
3545 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2410} 3546}
2411 3547
2412static void 3548static void
2413once_cb_to (EV_P_ ev_timer *w, int revents) 3549once_cb_to (EV_P_ ev_timer *w, int revents)
2414{ 3550{
2415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3551 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3552
3553 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2416} 3554}
2417 3555
2418void 3556void
2419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3557ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2420{ 3558{
… …
2442 ev_timer_set (&once->to, timeout, 0.); 3580 ev_timer_set (&once->to, timeout, 0.);
2443 ev_timer_start (EV_A_ &once->to); 3581 ev_timer_start (EV_A_ &once->to);
2444 } 3582 }
2445} 3583}
2446 3584
3585/*****************************************************************************/
3586
3587#if EV_WALK_ENABLE
3588void
3589ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3590{
3591 int i, j;
3592 ev_watcher_list *wl, *wn;
3593
3594 if (types & (EV_IO | EV_EMBED))
3595 for (i = 0; i < anfdmax; ++i)
3596 for (wl = anfds [i].head; wl; )
3597 {
3598 wn = wl->next;
3599
3600#if EV_EMBED_ENABLE
3601 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3602 {
3603 if (types & EV_EMBED)
3604 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3605 }
3606 else
3607#endif
3608#if EV_USE_INOTIFY
3609 if (ev_cb ((ev_io *)wl) == infy_cb)
3610 ;
3611 else
3612#endif
3613 if ((ev_io *)wl != &pipe_w)
3614 if (types & EV_IO)
3615 cb (EV_A_ EV_IO, wl);
3616
3617 wl = wn;
3618 }
3619
3620 if (types & (EV_TIMER | EV_STAT))
3621 for (i = timercnt + HEAP0; i-- > HEAP0; )
3622#if EV_STAT_ENABLE
3623 /*TODO: timer is not always active*/
3624 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3625 {
3626 if (types & EV_STAT)
3627 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3628 }
3629 else
3630#endif
3631 if (types & EV_TIMER)
3632 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3633
3634#if EV_PERIODIC_ENABLE
3635 if (types & EV_PERIODIC)
3636 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3637 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3638#endif
3639
3640#if EV_IDLE_ENABLE
3641 if (types & EV_IDLE)
3642 for (j = NUMPRI; i--; )
3643 for (i = idlecnt [j]; i--; )
3644 cb (EV_A_ EV_IDLE, idles [j][i]);
3645#endif
3646
3647#if EV_FORK_ENABLE
3648 if (types & EV_FORK)
3649 for (i = forkcnt; i--; )
3650 if (ev_cb (forks [i]) != embed_fork_cb)
3651 cb (EV_A_ EV_FORK, forks [i]);
3652#endif
3653
3654#if EV_ASYNC_ENABLE
3655 if (types & EV_ASYNC)
3656 for (i = asynccnt; i--; )
3657 cb (EV_A_ EV_ASYNC, asyncs [i]);
3658#endif
3659
3660 if (types & EV_PREPARE)
3661 for (i = preparecnt; i--; )
3662#if EV_EMBED_ENABLE
3663 if (ev_cb (prepares [i]) != embed_prepare_cb)
3664#endif
3665 cb (EV_A_ EV_PREPARE, prepares [i]);
3666
3667 if (types & EV_CHECK)
3668 for (i = checkcnt; i--; )
3669 cb (EV_A_ EV_CHECK, checks [i]);
3670
3671 if (types & EV_SIGNAL)
3672 for (i = 0; i < EV_NSIG - 1; ++i)
3673 for (wl = signals [i].head; wl; )
3674 {
3675 wn = wl->next;
3676 cb (EV_A_ EV_SIGNAL, wl);
3677 wl = wn;
3678 }
3679
3680 if (types & EV_CHILD)
3681 for (i = EV_PID_HASHSIZE; i--; )
3682 for (wl = childs [i]; wl; )
3683 {
3684 wn = wl->next;
3685 cb (EV_A_ EV_CHILD, wl);
3686 wl = wn;
3687 }
3688/* EV_STAT 0x00001000 /* stat data changed */
3689/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3690}
3691#endif
3692
2447#if EV_MULTIPLICITY 3693#if EV_MULTIPLICITY
2448 #include "ev_wrap.h" 3694 #include "ev_wrap.h"
2449#endif 3695#endif
2450 3696
2451#ifdef __cplusplus 3697#ifdef __cplusplus

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