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Comparing libev/ev.c (file contents):
Revision 1.211 by root, Tue Feb 19 17:09:28 2008 UTC vs.
Revision 1.337 by root, Wed Mar 10 09:18:24 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
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
132#include <assert.h> 164#include <assert.h>
133#include <errno.h> 165#include <errno.h>
134#include <sys/types.h> 166#include <sys/types.h>
135#include <time.h> 167#include <time.h>
168#include <limits.h>
136 169
137#include <signal.h> 170#include <signal.h>
138 171
139#ifdef EV_H 172#ifdef EV_H
140# include EV_H 173# include EV_H
… …
145#ifndef _WIN32 178#ifndef _WIN32
146# include <sys/time.h> 179# include <sys/time.h>
147# include <sys/wait.h> 180# include <sys/wait.h>
148# include <unistd.h> 181# include <unistd.h>
149#else 182#else
183# include <io.h>
150# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
151# include <windows.h> 185# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
154# endif 188# endif
189# undef EV_AVOID_STDIO
190#endif
191
192/* this block tries to deduce configuration from header-defined symbols and defaults */
193
194/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG)
196/* use what's provided */
197#elif defined (NSIG)
198# define EV_NSIG (NSIG)
199#elif defined(_NSIG)
200# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX)
202# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX)
204# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX)
206# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG)
208# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG)
210# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE)
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig)
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else
216# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */
219# define EV_NSIG 65
220#endif
221
222#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL 1
225# else
226# define EV_USE_CLOCK_SYSCALL 0
155#endif 227# endif
156 228#endif
157/**/
158 229
159#ifndef EV_USE_MONOTONIC 230#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1
233# else
160# define EV_USE_MONOTONIC 0 234# define EV_USE_MONOTONIC 0
235# endif
161#endif 236#endif
162 237
163#ifndef EV_USE_REALTIME 238#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0 239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165#endif 240#endif
166 241
167#ifndef EV_USE_NANOSLEEP 242#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1
245# else
168# define EV_USE_NANOSLEEP 0 246# define EV_USE_NANOSLEEP 0
247# endif
169#endif 248#endif
170 249
171#ifndef EV_USE_SELECT 250#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1 251# define EV_USE_SELECT 1
173#endif 252#endif
… …
179# define EV_USE_POLL 1 258# define EV_USE_POLL 1
180# endif 259# endif
181#endif 260#endif
182 261
183#ifndef EV_USE_EPOLL 262#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1
265# else
184# define EV_USE_EPOLL 0 266# define EV_USE_EPOLL 0
267# endif
185#endif 268#endif
186 269
187#ifndef EV_USE_KQUEUE 270#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 271# define EV_USE_KQUEUE 0
189#endif 272#endif
… …
191#ifndef EV_USE_PORT 274#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 275# define EV_USE_PORT 0
193#endif 276#endif
194 277
195#ifndef EV_USE_INOTIFY 278#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1
281# else
196# define EV_USE_INOTIFY 0 282# define EV_USE_INOTIFY 0
283# endif
197#endif 284#endif
198 285
199#ifndef EV_PID_HASHSIZE 286#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 287# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1 288# define EV_PID_HASHSIZE 1
… …
210# else 297# else
211# define EV_INOTIFY_HASHSIZE 16 298# define EV_INOTIFY_HASHSIZE 16
212# endif 299# endif
213#endif 300#endif
214 301
215/**/ 302#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1
305# else
306# define EV_USE_EVENTFD 0
307# endif
308#endif
309
310#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1
313# else
314# define EV_USE_SIGNALFD 0
315# endif
316#endif
317
318#if 0 /* debugging */
319# define EV_VERIFY 3
320# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1
322#endif
323
324#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL
326#endif
327
328#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL
330#endif
331
332#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL
334#endif
335
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL
339# include <syscall.h>
340# ifdef SYS_clock_gettime
341# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
342# undef EV_USE_MONOTONIC
343# define EV_USE_MONOTONIC 1
344# else
345# undef EV_USE_CLOCK_SYSCALL
346# define EV_USE_CLOCK_SYSCALL 0
347# endif
348#endif
349
350/* this block fixes any misconfiguration where we know we run into trouble otherwise */
351
352#ifdef _AIX
353/* AIX has a completely broken poll.h header */
354# undef EV_USE_POLL
355# define EV_USE_POLL 0
356#endif
216 357
217#ifndef CLOCK_MONOTONIC 358#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 359# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 360# define EV_USE_MONOTONIC 0
220#endif 361#endif
… …
234# include <sys/select.h> 375# include <sys/select.h>
235# endif 376# endif
236#endif 377#endif
237 378
238#if EV_USE_INOTIFY 379#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h>
239# include <sys/inotify.h> 382# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0
387# endif
240#endif 388#endif
241 389
242#if EV_SELECT_IS_WINSOCKET 390#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 391# include <winsock.h>
244#endif 392#endif
245 393
394#if EV_USE_EVENTFD
395/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
396# include <stdint.h>
397# ifndef EFD_NONBLOCK
398# define EFD_NONBLOCK O_NONBLOCK
399# endif
400# ifndef EFD_CLOEXEC
401# ifdef O_CLOEXEC
402# define EFD_CLOEXEC O_CLOEXEC
403# else
404# define EFD_CLOEXEC 02000000
405# endif
406# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags);
433
434struct signalfd_siginfo
435{
436 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)];
438};
439# ifdef __cplusplus
440}
441# endif
442#endif
443
444
246/**/ 445/**/
446
447#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
449#else
450# define EV_FREQUENT_CHECK do { } while (0)
451#endif
247 452
248/* 453/*
249 * This is used to avoid floating point rounding problems. 454 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics 455 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding 456 * to ensure progress, time-wise, even when rounding
… …
255 */ 460 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257 462
258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#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) */ 464#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 */
261 465
262#if __GNUC__ >= 4 466#if __GNUC__ >= 4
263# define expect(expr,value) __builtin_expect ((expr),(value)) 467# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline)) 468# define noinline __attribute__ ((noinline))
265#else 469#else
266# define expect(expr,value) (expr) 470# define expect(expr,value) (expr)
267# define noinline 471# define noinline
268# if __STDC_VERSION__ < 199901L 472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
269# define inline 473# define inline
270# endif 474# endif
271#endif 475#endif
272 476
273#define expect_false(expr) expect ((expr) != 0, 0) 477#define expect_false(expr) expect ((expr) != 0, 0)
… …
278# define inline_speed static noinline 482# define inline_speed static noinline
279#else 483#else
280# define inline_speed static inline 484# define inline_speed static inline
281#endif 485#endif
282 486
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488
489#if EV_MINPRI == EV_MAXPRI
490# define ABSPRI(w) (((W)w), 0)
491#else
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 492# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
493#endif
285 494
286#define EMPTY /* required for microsofts broken pseudo-c compiler */ 495#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */ 496#define EMPTY2(a,b) /* used to suppress some warnings */
288 497
289typedef ev_watcher *W; 498typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 499typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 500typedef ev_watcher_time *WT;
292 501
293#if EV_USE_MONOTONIC 502#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at
504
505#if EV_USE_REALTIME
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 506/* 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 */ 507/* giving it a reasonably high chance of working on typical architetcures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif
510
511#if EV_USE_MONOTONIC
296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
513#endif
514
515#ifndef EV_FD_TO_WIN32_HANDLE
516# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
517#endif
518#ifndef EV_WIN32_HANDLE_TO_FD
519# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
520#endif
521#ifndef EV_WIN32_CLOSE_FD
522# define EV_WIN32_CLOSE_FD(fd) close (fd)
297#endif 523#endif
298 524
299#ifdef _WIN32 525#ifdef _WIN32
300# include "ev_win32.c" 526# include "ev_win32.c"
301#endif 527#endif
302 528
303/*****************************************************************************/ 529/*****************************************************************************/
304 530
531#if EV_AVOID_STDIO
532static void noinline
533ev_printerr (const char *msg)
534{
535 write (STDERR_FILENO, msg, strlen (msg));
536}
537#endif
538
305static void (*syserr_cb)(const char *msg); 539static void (*syserr_cb)(const char *msg);
306 540
307void 541void
308ev_set_syserr_cb (void (*cb)(const char *msg)) 542ev_set_syserr_cb (void (*cb)(const char *msg))
309{ 543{
310 syserr_cb = cb; 544 syserr_cb = cb;
311} 545}
312 546
313static void noinline 547static void noinline
314syserr (const char *msg) 548ev_syserr (const char *msg)
315{ 549{
316 if (!msg) 550 if (!msg)
317 msg = "(libev) system error"; 551 msg = "(libev) system error";
318 552
319 if (syserr_cb) 553 if (syserr_cb)
320 syserr_cb (msg); 554 syserr_cb (msg);
321 else 555 else
322 { 556 {
557#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg);
561 ev_printerr (": ");
562 ev_printerr (err);
563 ev_printerr ("\n");
564#else
323 perror (msg); 565 perror (msg);
566#endif
324 abort (); 567 abort ();
325 } 568 }
326} 569}
327 570
571static void *
572ev_realloc_emul (void *ptr, long size)
573{
574#if __GLIBC__
575 return realloc (ptr, size);
576#else
577 /* some systems, notably openbsd and darwin, fail to properly
578 * implement realloc (x, 0) (as required by both ansi c-89 and
579 * the single unix specification, so work around them here.
580 */
581
582 if (size)
583 return realloc (ptr, size);
584
585 free (ptr);
586 return 0;
587#endif
588}
589
328static void *(*alloc)(void *ptr, long size); 590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 591
330void 592void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 593ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 594{
333 alloc = cb; 595 alloc = cb;
334} 596}
335 597
336inline_speed void * 598inline_speed void *
337ev_realloc (void *ptr, long size) 599ev_realloc (void *ptr, long size)
338{ 600{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 601 ptr = alloc (ptr, size);
340 602
341 if (!ptr && size) 603 if (!ptr && size)
342 { 604 {
605#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n");
607#else
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
609#endif
344 abort (); 610 abort ();
345 } 611 }
346 612
347 return ptr; 613 return ptr;
348} 614}
… …
350#define ev_malloc(size) ev_realloc (0, (size)) 616#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0) 617#define ev_free(ptr) ev_realloc ((ptr), 0)
352 618
353/*****************************************************************************/ 619/*****************************************************************************/
354 620
621/* set in reify when reification needed */
622#define EV_ANFD_REIFY 1
623
624/* file descriptor info structure */
355typedef struct 625typedef struct
356{ 626{
357 WL head; 627 WL head;
358 unsigned char events; 628 unsigned char events; /* the events watched for */
629 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359 unsigned char reify; 631 unsigned char unused;
632#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif
360#if EV_SELECT_IS_WINSOCKET 635#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle; 636 SOCKET handle;
362#endif 637#endif
363} ANFD; 638} ANFD;
364 639
640/* stores the pending event set for a given watcher */
365typedef struct 641typedef struct
366{ 642{
367 W w; 643 W w;
368 int events; 644 int events; /* the pending event set for the given watcher */
369} ANPENDING; 645} ANPENDING;
370 646
371#if EV_USE_INOTIFY 647#if EV_USE_INOTIFY
648/* hash table entry per inotify-id */
372typedef struct 649typedef struct
373{ 650{
374 WL head; 651 WL head;
375} ANFS; 652} ANFS;
653#endif
654
655/* Heap Entry */
656#if EV_HEAP_CACHE_AT
657 /* a heap element */
658 typedef struct {
659 ev_tstamp at;
660 WT w;
661 } ANHE;
662
663 #define ANHE_w(he) (he).w /* access watcher, read-write */
664 #define ANHE_at(he) (he).at /* access cached at, read-only */
665 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
666#else
667 /* a heap element */
668 typedef WT ANHE;
669
670 #define ANHE_w(he) (he)
671 #define ANHE_at(he) (he)->at
672 #define ANHE_at_cache(he)
376#endif 673#endif
377 674
378#if EV_MULTIPLICITY 675#if EV_MULTIPLICITY
379 676
380 struct ev_loop 677 struct ev_loop
… …
399 696
400 static int ev_default_loop_ptr; 697 static int ev_default_loop_ptr;
401 698
402#endif 699#endif
403 700
701#if EV_MINIMAL < 2
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else
706# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif
710
711#define EVUNLOOP_RECURSE 0x80
712
404/*****************************************************************************/ 713/*****************************************************************************/
405 714
715#ifndef EV_HAVE_EV_TIME
406ev_tstamp 716ev_tstamp
407ev_time (void) 717ev_time (void)
408{ 718{
409#if EV_USE_REALTIME 719#if EV_USE_REALTIME
720 if (expect_true (have_realtime))
721 {
410 struct timespec ts; 722 struct timespec ts;
411 clock_gettime (CLOCK_REALTIME, &ts); 723 clock_gettime (CLOCK_REALTIME, &ts);
412 return ts.tv_sec + ts.tv_nsec * 1e-9; 724 return ts.tv_sec + ts.tv_nsec * 1e-9;
413#else 725 }
726#endif
727
414 struct timeval tv; 728 struct timeval tv;
415 gettimeofday (&tv, 0); 729 gettimeofday (&tv, 0);
416 return tv.tv_sec + tv.tv_usec * 1e-6; 730 return tv.tv_sec + tv.tv_usec * 1e-6;
417#endif
418} 731}
732#endif
419 733
420ev_tstamp inline_size 734inline_size ev_tstamp
421get_clock (void) 735get_clock (void)
422{ 736{
423#if EV_USE_MONOTONIC 737#if EV_USE_MONOTONIC
424 if (expect_true (have_monotonic)) 738 if (expect_true (have_monotonic))
425 { 739 {
… …
451 ts.tv_sec = (time_t)delay; 765 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453 767
454 nanosleep (&ts, 0); 768 nanosleep (&ts, 0);
455#elif defined(_WIN32) 769#elif defined(_WIN32)
456 Sleep (delay * 1e3); 770 Sleep ((unsigned long)(delay * 1e3));
457#else 771#else
458 struct timeval tv; 772 struct timeval tv;
459 773
460 tv.tv_sec = (time_t)delay; 774 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462 776
777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */
463 select (0, 0, 0, 0, &tv); 780 select (0, 0, 0, 0, &tv);
464#endif 781#endif
465 } 782 }
466} 783}
467 784
468/*****************************************************************************/ 785/*****************************************************************************/
469 786
470int inline_size 787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788
789/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */
791inline_size int
471array_nextsize (int elem, int cur, int cnt) 792array_nextsize (int elem, int cur, int cnt)
472{ 793{
473 int ncur = cur + 1; 794 int ncur = cur + 1;
474 795
475 do 796 do
476 ncur <<= 1; 797 ncur <<= 1;
477 while (cnt > ncur); 798 while (cnt > ncur);
478 799
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 802 {
482 ncur *= elem; 803 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 805 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 806 ncur /= elem;
486 } 807 }
487 808
488 return ncur; 809 return ncur;
… …
492array_realloc (int elem, void *base, int *cur, int cnt) 813array_realloc (int elem, void *base, int *cur, int cnt)
493{ 814{
494 *cur = array_nextsize (elem, *cur, cnt); 815 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur); 816 return ev_realloc (base, elem * *cur);
496} 817}
818
819#define array_init_zero(base,count) \
820 memset ((void *)(base), 0, sizeof (*(base)) * (count))
497 821
498#define array_needsize(type,base,cur,cnt,init) \ 822#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \ 823 if (expect_false ((cnt) > (cur))) \
500 { \ 824 { \
501 int ocur_ = (cur); \ 825 int ocur_ = (cur); \
… …
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 837 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 } 838 }
515#endif 839#endif
516 840
517#define array_free(stem, idx) \ 841#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 842 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519 843
520/*****************************************************************************/ 844/*****************************************************************************/
845
846/* dummy callback for pending events */
847static void noinline
848pendingcb (EV_P_ ev_prepare *w, int revents)
849{
850}
521 851
522void noinline 852void noinline
523ev_feed_event (EV_P_ void *w, int revents) 853ev_feed_event (EV_P_ void *w, int revents)
524{ 854{
525 W w_ = (W)w; 855 W w_ = (W)w;
… …
534 pendings [pri][w_->pending - 1].w = w_; 864 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents; 865 pendings [pri][w_->pending - 1].events = revents;
536 } 866 }
537} 867}
538 868
539void inline_speed 869inline_speed void
870feed_reverse (EV_P_ W w)
871{
872 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
873 rfeeds [rfeedcnt++] = w;
874}
875
876inline_size void
877feed_reverse_done (EV_P_ int revents)
878{
879 do
880 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
881 while (rfeedcnt);
882}
883
884inline_speed void
540queue_events (EV_P_ W *events, int eventcnt, int type) 885queue_events (EV_P_ W *events, int eventcnt, int type)
541{ 886{
542 int i; 887 int i;
543 888
544 for (i = 0; i < eventcnt; ++i) 889 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type); 890 ev_feed_event (EV_A_ events [i], type);
546} 891}
547 892
548/*****************************************************************************/ 893/*****************************************************************************/
549 894
550void inline_size 895inline_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) 896fd_event_nocheck (EV_P_ int fd, int revents)
565{ 897{
566 ANFD *anfd = anfds + fd; 898 ANFD *anfd = anfds + fd;
567 ev_io *w; 899 ev_io *w;
568 900
569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
573 if (ev) 905 if (ev)
574 ev_feed_event (EV_A_ (W)w, ev); 906 ev_feed_event (EV_A_ (W)w, ev);
575 } 907 }
576} 908}
577 909
910/* do not submit kernel events for fds that have reify set */
911/* because that means they changed while we were polling for new events */
912inline_speed void
913fd_event (EV_P_ int fd, int revents)
914{
915 ANFD *anfd = anfds + fd;
916
917 if (expect_true (!anfd->reify))
918 fd_event_nocheck (EV_A_ fd, revents);
919}
920
578void 921void
579ev_feed_fd_event (EV_P_ int fd, int revents) 922ev_feed_fd_event (EV_P_ int fd, int revents)
580{ 923{
581 if (fd >= 0 && fd < anfdmax) 924 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents); 925 fd_event_nocheck (EV_A_ fd, revents);
583} 926}
584 927
585void inline_size 928/* make sure the external fd watch events are in-sync */
929/* with the kernel/libev internal state */
930inline_size void
586fd_reify (EV_P) 931fd_reify (EV_P)
587{ 932{
588 int i; 933 int i;
589 934
590 for (i = 0; i < fdchangecnt; ++i) 935 for (i = 0; i < fdchangecnt; ++i)
… …
599 events |= (unsigned char)w->events; 944 events |= (unsigned char)w->events;
600 945
601#if EV_SELECT_IS_WINSOCKET 946#if EV_SELECT_IS_WINSOCKET
602 if (events) 947 if (events)
603 { 948 {
604 unsigned long argp; 949 unsigned long arg;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 950 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)); 951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
611 } 952 }
612#endif 953#endif
613 954
614 { 955 {
615 unsigned char o_events = anfd->events; 956 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify; 957 unsigned char o_reify = anfd->reify;
617 958
618 anfd->reify = 0; 959 anfd->reify = 0;
619 anfd->events = events; 960 anfd->events = events;
620 961
621 if (o_events != events || o_reify & EV_IOFDSET) 962 if (o_events != events || o_reify & EV__IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events); 963 backend_modify (EV_A_ fd, o_events, events);
623 } 964 }
624 } 965 }
625 966
626 fdchangecnt = 0; 967 fdchangecnt = 0;
627} 968}
628 969
629void inline_size 970/* something about the given fd changed */
971inline_size void
630fd_change (EV_P_ int fd, int flags) 972fd_change (EV_P_ int fd, int flags)
631{ 973{
632 unsigned char reify = anfds [fd].reify; 974 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags; 975 anfds [fd].reify |= flags;
634 976
… …
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 980 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd; 981 fdchanges [fdchangecnt - 1] = fd;
640 } 982 }
641} 983}
642 984
643void inline_speed 985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void
644fd_kill (EV_P_ int fd) 987fd_kill (EV_P_ int fd)
645{ 988{
646 ev_io *w; 989 ev_io *w;
647 990
648 while ((w = (ev_io *)anfds [fd].head)) 991 while ((w = (ev_io *)anfds [fd].head))
… …
650 ev_io_stop (EV_A_ w); 993 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 } 995 }
653} 996}
654 997
655int inline_size 998/* check whether the given fd is actually valid, for error recovery */
999inline_size int
656fd_valid (int fd) 1000fd_valid (int fd)
657{ 1001{
658#ifdef _WIN32 1002#ifdef _WIN32
659 return _get_osfhandle (fd) != -1; 1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660#else 1004#else
661 return fcntl (fd, F_GETFD) != -1; 1005 return fcntl (fd, F_GETFD) != -1;
662#endif 1006#endif
663} 1007}
664 1008
… …
668{ 1012{
669 int fd; 1013 int fd;
670 1014
671 for (fd = 0; fd < anfdmax; ++fd) 1015 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events) 1016 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF) 1017 if (!fd_valid (fd) && errno == EBADF)
674 fd_kill (EV_A_ fd); 1018 fd_kill (EV_A_ fd);
675} 1019}
676 1020
677/* called on ENOMEM in select/poll to kill some fds and retry */ 1021/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline 1022static void noinline
… …
682 1026
683 for (fd = anfdmax; fd--; ) 1027 for (fd = anfdmax; fd--; )
684 if (anfds [fd].events) 1028 if (anfds [fd].events)
685 { 1029 {
686 fd_kill (EV_A_ fd); 1030 fd_kill (EV_A_ fd);
687 return; 1031 break;
688 } 1032 }
689} 1033}
690 1034
691/* usually called after fork if backend needs to re-arm all fds from scratch */ 1035/* usually called after fork if backend needs to re-arm all fds from scratch */
692static void noinline 1036static void noinline
… …
696 1040
697 for (fd = 0; fd < anfdmax; ++fd) 1041 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events) 1042 if (anfds [fd].events)
699 { 1043 {
700 anfds [fd].events = 0; 1044 anfds [fd].events = 0;
1045 anfds [fd].emask = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1046 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702 } 1047 }
703} 1048}
704 1049
705/*****************************************************************************/ 1050/* used to prepare libev internal fd's */
706 1051/* this is not fork-safe */
707void inline_speed 1052inline_speed void
708upheap (WT *heap, int k)
709{
710 WT w = heap [k];
711
712 while (k)
713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
719 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1;
721 k = p;
722 }
723
724 heap [k] = w;
725 ((W)heap [k])->active = k + 1;
726}
727
728void inline_speed
729downheap (WT *heap, int N, int k)
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)
758{
759 upheap (heap, k);
760 downheap (heap, N, k);
761}
762
763/*****************************************************************************/
764
765typedef struct
766{
767 WL head;
768 EV_ATOMIC_T gotsig;
769} ANSIG;
770
771static ANSIG *signals;
772static int signalmax;
773
774static EV_ATOMIC_T gotsig;
775
776void inline_size
777signals_init (ANSIG *base, int count)
778{
779 while (count--)
780 {
781 base->head = 0;
782 base->gotsig = 0;
783
784 ++base;
785 }
786}
787
788/*****************************************************************************/
789
790void inline_speed
791fd_intern (int fd) 1053fd_intern (int fd)
792{ 1054{
793#ifdef _WIN32 1055#ifdef _WIN32
794 int arg = 1; 1056 unsigned long arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1057 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
796#else 1058#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC); 1059 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK); 1060 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif 1061#endif
800} 1062}
801 1063
1064/*****************************************************************************/
1065
1066/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree.
1070 */
1071
1072/*
1073 * at the moment we allow libev the luxury of two heaps,
1074 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1075 * which is more cache-efficient.
1076 * the difference is about 5% with 50000+ watchers.
1077 */
1078#if EV_USE_4HEAP
1079
1080#define DHEAP 4
1081#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1082#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1083#define UPHEAP_DONE(p,k) ((p) == (k))
1084
1085/* away from the root */
1086inline_speed void
1087downheap (ANHE *heap, int N, int k)
1088{
1089 ANHE he = heap [k];
1090 ANHE *E = heap + N + HEAP0;
1091
1092 for (;;)
1093 {
1094 ev_tstamp minat;
1095 ANHE *minpos;
1096 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1097
1098 /* find minimum child */
1099 if (expect_true (pos + DHEAP - 1 < E))
1100 {
1101 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1102 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1103 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1104 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1105 }
1106 else if (pos < E)
1107 {
1108 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1109 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1110 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1111 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1112 }
1113 else
1114 break;
1115
1116 if (ANHE_at (he) <= minat)
1117 break;
1118
1119 heap [k] = *minpos;
1120 ev_active (ANHE_w (*minpos)) = k;
1121
1122 k = minpos - heap;
1123 }
1124
1125 heap [k] = he;
1126 ev_active (ANHE_w (he)) = k;
1127}
1128
1129#else /* 4HEAP */
1130
1131#define HEAP0 1
1132#define HPARENT(k) ((k) >> 1)
1133#define UPHEAP_DONE(p,k) (!(p))
1134
1135/* away from the root */
1136inline_speed void
1137downheap (ANHE *heap, int N, int k)
1138{
1139 ANHE he = heap [k];
1140
1141 for (;;)
1142 {
1143 int c = k << 1;
1144
1145 if (c >= N + HEAP0)
1146 break;
1147
1148 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1149 ? 1 : 0;
1150
1151 if (ANHE_at (he) <= ANHE_at (heap [c]))
1152 break;
1153
1154 heap [k] = heap [c];
1155 ev_active (ANHE_w (heap [k])) = k;
1156
1157 k = c;
1158 }
1159
1160 heap [k] = he;
1161 ev_active (ANHE_w (he)) = k;
1162}
1163#endif
1164
1165/* towards the root */
1166inline_speed void
1167upheap (ANHE *heap, int k)
1168{
1169 ANHE he = heap [k];
1170
1171 for (;;)
1172 {
1173 int p = HPARENT (k);
1174
1175 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1176 break;
1177
1178 heap [k] = heap [p];
1179 ev_active (ANHE_w (heap [k])) = k;
1180 k = p;
1181 }
1182
1183 heap [k] = he;
1184 ev_active (ANHE_w (he)) = k;
1185}
1186
1187/* move an element suitably so it is in a correct place */
1188inline_size void
1189adjustheap (ANHE *heap, int N, int k)
1190{
1191 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1192 upheap (heap, k);
1193 else
1194 downheap (heap, N, k);
1195}
1196
1197/* rebuild the heap: this function is used only once and executed rarely */
1198inline_size void
1199reheap (ANHE *heap, int N)
1200{
1201 int i;
1202
1203 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1204 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1205 for (i = 0; i < N; ++i)
1206 upheap (heap, i + HEAP0);
1207}
1208
1209/*****************************************************************************/
1210
1211/* associate signal watchers to a signal signal */
1212typedef struct
1213{
1214 EV_ATOMIC_T pending;
1215#if EV_MULTIPLICITY
1216 EV_P;
1217#endif
1218 WL head;
1219} ANSIG;
1220
1221static ANSIG signals [EV_NSIG - 1];
1222
1223/*****************************************************************************/
1224
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226
802static void noinline 1227static void noinline
803evpipe_init (EV_P) 1228evpipe_init (EV_P)
804{ 1229{
805 if (!ev_is_active (&pipeev)) 1230 if (!ev_is_active (&pipe_w))
806 { 1231 {
1232# if EV_USE_EVENTFD
1233 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1234 if (evfd < 0 && errno == EINVAL)
1235 evfd = eventfd (0, 0);
1236
1237 if (evfd >= 0)
1238 {
1239 evpipe [0] = -1;
1240 fd_intern (evfd); /* doing it twice doesn't hurt */
1241 ev_io_set (&pipe_w, evfd, EV_READ);
1242 }
1243 else
1244# endif
1245 {
807 while (pipe (evpipe)) 1246 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe"); 1247 ev_syserr ("(libev) error creating signal/async pipe");
809 1248
810 fd_intern (evpipe [0]); 1249 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]); 1250 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ); 1251 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1252 }
1253
814 ev_io_start (EV_A_ &pipeev); 1254 ev_io_start (EV_A_ &pipe_w);
815 ev_unref (EV_A); /* watcher should not keep loop alive */ 1255 ev_unref (EV_A); /* watcher should not keep loop alive */
816
817 /* in case we received the signal before we had the chance of installing a handler */
818 ev_feed_event (EV_A_ &pipeev, 0);
819 }
820}
821
822void inline_size
823evpipe_write (EV_P_ int sig, int async)
824{
825 if (!(gotasync || gotsig))
826 { 1256 }
1257}
1258
1259inline_size void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{
1262 if (!*flag)
1263 {
827 int old_errno = errno; /* save errno becaue write might clobber it */ 1264 int old_errno = errno; /* save errno because write might clobber it */
1265 char dummy;
828 1266
829 if (sig) gotsig = 1; 1267 *flag = 1;
830 if (async) gotasync = 1;
831 1268
1269#if EV_USE_EVENTFD
1270 if (evfd >= 0)
1271 {
1272 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t));
1274 }
1275 else
1276#endif
832 write (evpipe [1], &old_errno, 1); 1277 write (evpipe [1], &dummy, 1);
833 1278
834 errno = old_errno; 1279 errno = old_errno;
835 } 1280 }
836} 1281}
837 1282
1283/* called whenever the libev signal pipe */
1284/* got some events (signal, async) */
838static void 1285static void
839pipecb (EV_P_ ev_io *iow, int revents) 1286pipecb (EV_P_ ev_io *iow, int revents)
840{ 1287{
1288 int i;
1289
1290#if EV_USE_EVENTFD
1291 if (evfd >= 0)
841 { 1292 {
842 int dummy; 1293 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t));
1295 }
1296 else
1297#endif
1298 {
1299 char dummy;
843 read (evpipe [0], &dummy, 1); 1300 read (evpipe [0], &dummy, 1);
844 } 1301 }
845 1302
846 if (gotsig && ev_is_default_loop (EV_A)) 1303 if (sig_pending)
847 { 1304 {
848 int signum; 1305 sig_pending = 0;
849 gotsig = 0;
850 1306
851 for (signum = signalmax; signum--; ) 1307 for (i = EV_NSIG - 1; i--; )
852 if (signals [signum].gotsig) 1308 if (expect_false (signals [i].pending))
853 ev_feed_signal_event (EV_A_ signum + 1); 1309 ev_feed_signal_event (EV_A_ i + 1);
854 } 1310 }
855 1311
856#if EV_ASYNC_ENABLE 1312#if EV_ASYNC_ENABLE
857 if (gotasync) 1313 if (async_pending)
858 { 1314 {
859 int i; 1315 async_pending = 0;
860 gotasync = 0;
861 1316
862 for (i = asynccnt; i--; ) 1317 for (i = asynccnt; i--; )
863 if (asyncs [i]->sent) 1318 if (asyncs [i]->sent)
864 { 1319 {
865 asyncs [i]->sent = 0; 1320 asyncs [i]->sent = 0;
… …
870} 1325}
871 1326
872/*****************************************************************************/ 1327/*****************************************************************************/
873 1328
874static void 1329static void
875sighandler (int signum) 1330ev_sighandler (int signum)
876{ 1331{
877#if EV_MULTIPLICITY 1332#if EV_MULTIPLICITY
878 struct ev_loop *loop = &default_loop_struct; 1333 EV_P = signals [signum - 1].loop;
879#endif 1334#endif
880 1335
881#if _WIN32 1336#ifdef _WIN32
882 signal (signum, sighandler); 1337 signal (signum, ev_sighandler);
883#endif 1338#endif
884 1339
885 signals [signum - 1].gotsig = 1; 1340 signals [signum - 1].pending = 1;
886 evpipe_write (EV_A_ 1, 0); 1341 evpipe_write (EV_A_ &sig_pending);
887} 1342}
888 1343
889void noinline 1344void noinline
890ev_feed_signal_event (EV_P_ int signum) 1345ev_feed_signal_event (EV_P_ int signum)
891{ 1346{
892 WL w; 1347 WL w;
893 1348
1349 if (expect_false (signum <= 0 || signum > EV_NSIG))
1350 return;
1351
1352 --signum;
1353
894#if EV_MULTIPLICITY 1354#if EV_MULTIPLICITY
895 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1355 /* it is permissible to try to feed a signal to the wrong loop */
896#endif 1356 /* or, likely more useful, feeding a signal nobody is waiting for */
897 1357
898 --signum; 1358 if (expect_false (signals [signum].loop != EV_A))
899
900 if (signum < 0 || signum >= signalmax)
901 return; 1359 return;
1360#endif
902 1361
903 signals [signum].gotsig = 0; 1362 signals [signum].pending = 0;
904 1363
905 for (w = signals [signum].head; w; w = w->next) 1364 for (w = signals [signum].head; w; w = w->next)
906 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1365 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
907} 1366}
908 1367
1368#if EV_USE_SIGNALFD
1369static void
1370sigfdcb (EV_P_ ev_io *iow, int revents)
1371{
1372 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1373
1374 for (;;)
1375 {
1376 ssize_t res = read (sigfd, si, sizeof (si));
1377
1378 /* not ISO-C, as res might be -1, but works with SuS */
1379 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1380 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1381
1382 if (res < (ssize_t)sizeof (si))
1383 break;
1384 }
1385}
1386#endif
1387
1388#endif
1389
909/*****************************************************************************/ 1390/*****************************************************************************/
910 1391
1392#if EV_CHILD_ENABLE
911static WL childs [EV_PID_HASHSIZE]; 1393static WL childs [EV_PID_HASHSIZE];
912
913#ifndef _WIN32
914 1394
915static ev_signal childev; 1395static ev_signal childev;
916 1396
917#ifndef WIFCONTINUED 1397#ifndef WIFCONTINUED
918# define WIFCONTINUED(status) 0 1398# define WIFCONTINUED(status) 0
919#endif 1399#endif
920 1400
921void inline_speed 1401/* handle a single child status event */
1402inline_speed void
922child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1403child_reap (EV_P_ int chain, int pid, int status)
923{ 1404{
924 ev_child *w; 1405 ev_child *w;
925 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
926 1407
927 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
928 { 1409 {
929 if ((w->pid == pid || !w->pid) 1410 if ((w->pid == pid || !w->pid)
930 && (!traced || (w->flags & 1))) 1411 && (!traced || (w->flags & 1)))
931 { 1412 {
932 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
933 w->rpid = pid; 1414 w->rpid = pid;
934 w->rstatus = status; 1415 w->rstatus = status;
935 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1416 ev_feed_event (EV_A_ (W)w, EV_CHILD);
936 } 1417 }
937 } 1418 }
… …
939 1420
940#ifndef WCONTINUED 1421#ifndef WCONTINUED
941# define WCONTINUED 0 1422# define WCONTINUED 0
942#endif 1423#endif
943 1424
1425/* called on sigchld etc., calls waitpid */
944static void 1426static void
945childcb (EV_P_ ev_signal *sw, int revents) 1427childcb (EV_P_ ev_signal *sw, int revents)
946{ 1428{
947 int pid, status; 1429 int pid, status;
948 1430
… …
951 if (!WCONTINUED 1433 if (!WCONTINUED
952 || errno != EINVAL 1434 || errno != EINVAL
953 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1435 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
954 return; 1436 return;
955 1437
956 /* make sure we are called again until all childs have been reaped */ 1438 /* make sure we are called again until all children have been reaped */
957 /* we need to do it this way so that the callback gets called before we continue */ 1439 /* we need to do it this way so that the callback gets called before we continue */
958 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
959 1441
960 child_reap (EV_A_ sw, pid, pid, status); 1442 child_reap (EV_A_ pid, pid, status);
961 if (EV_PID_HASHSIZE > 1) 1443 if (EV_PID_HASHSIZE > 1)
962 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
963} 1445}
964 1446
965#endif 1447#endif
966 1448
967/*****************************************************************************/ 1449/*****************************************************************************/
… …
1029 /* kqueue is borked on everything but netbsd apparently */ 1511 /* kqueue is borked on everything but netbsd apparently */
1030 /* it usually doesn't work correctly on anything but sockets and pipes */ 1512 /* it usually doesn't work correctly on anything but sockets and pipes */
1031 flags &= ~EVBACKEND_KQUEUE; 1513 flags &= ~EVBACKEND_KQUEUE;
1032#endif 1514#endif
1033#ifdef __APPLE__ 1515#ifdef __APPLE__
1034 // flags &= ~EVBACKEND_KQUEUE; for documentation 1516 /* only select works correctly on that "unix-certified" platform */
1035 flags &= ~EVBACKEND_POLL; 1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1036#endif 1519#endif
1037 1520
1038 return flags; 1521 return flags;
1039} 1522}
1040 1523
… …
1054ev_backend (EV_P) 1537ev_backend (EV_P)
1055{ 1538{
1056 return backend; 1539 return backend;
1057} 1540}
1058 1541
1542#if EV_MINIMAL < 2
1059unsigned int 1543unsigned int
1060ev_loop_count (EV_P) 1544ev_loop_count (EV_P)
1061{ 1545{
1062 return loop_count; 1546 return loop_count;
1063} 1547}
1064 1548
1549unsigned int
1550ev_loop_depth (EV_P)
1551{
1552 return loop_depth;
1553}
1554
1065void 1555void
1066ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1067{ 1557{
1068 io_blocktime = interval; 1558 io_blocktime = interval;
1069} 1559}
… …
1072ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1073{ 1563{
1074 timeout_blocktime = interval; 1564 timeout_blocktime = interval;
1075} 1565}
1076 1566
1567void
1568ev_set_userdata (EV_P_ void *data)
1569{
1570 userdata = data;
1571}
1572
1573void *
1574ev_userdata (EV_P)
1575{
1576 return userdata;
1577}
1578
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1580{
1581 invoke_cb = invoke_pending_cb;
1582}
1583
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1585{
1586 release_cb = release;
1587 acquire_cb = acquire;
1588}
1589#endif
1590
1591/* initialise a loop structure, must be zero-initialised */
1077static void noinline 1592static void noinline
1078loop_init (EV_P_ unsigned int flags) 1593loop_init (EV_P_ unsigned int flags)
1079{ 1594{
1080 if (!backend) 1595 if (!backend)
1081 { 1596 {
1597#if EV_USE_REALTIME
1598 if (!have_realtime)
1599 {
1600 struct timespec ts;
1601
1602 if (!clock_gettime (CLOCK_REALTIME, &ts))
1603 have_realtime = 1;
1604 }
1605#endif
1606
1082#if EV_USE_MONOTONIC 1607#if EV_USE_MONOTONIC
1608 if (!have_monotonic)
1083 { 1609 {
1084 struct timespec ts; 1610 struct timespec ts;
1611
1085 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1612 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1086 have_monotonic = 1; 1613 have_monotonic = 1;
1087 } 1614 }
1088#endif 1615#endif
1616
1617 /* pid check not overridable via env */
1618#ifndef _WIN32
1619 if (flags & EVFLAG_FORKCHECK)
1620 curpid = getpid ();
1621#endif
1622
1623 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS"));
1089 1627
1090 ev_rt_now = ev_time (); 1628 ev_rt_now = ev_time ();
1091 mn_now = get_clock (); 1629 mn_now = get_clock ();
1092 now_floor = mn_now; 1630 now_floor = mn_now;
1093 rtmn_diff = ev_rt_now - mn_now; 1631 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2
1633 invoke_cb = ev_invoke_pending;
1634#endif
1094 1635
1095 io_blocktime = 0.; 1636 io_blocktime = 0.;
1096 timeout_blocktime = 0.; 1637 timeout_blocktime = 0.;
1097 backend = 0; 1638 backend = 0;
1098 backend_fd = -1; 1639 backend_fd = -1;
1099 gotasync = 0; 1640 sig_pending = 0;
1641#if EV_ASYNC_ENABLE
1642 async_pending = 0;
1643#endif
1100#if EV_USE_INOTIFY 1644#if EV_USE_INOTIFY
1101 fs_fd = -2; 1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1102#endif 1646#endif
1103 1647#if EV_USE_SIGNALFD
1104 /* pid check not overridable via env */ 1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1105#ifndef _WIN32
1106 if (flags & EVFLAG_FORKCHECK)
1107 curpid = getpid ();
1108#endif 1649#endif
1109 1650
1110 if (!(flags & EVFLAG_NOENV)
1111 && !enable_secure ()
1112 && getenv ("LIBEV_FLAGS"))
1113 flags = atoi (getenv ("LIBEV_FLAGS"));
1114
1115 if (!(flags & 0x0000ffffUL)) 1651 if (!(flags & 0x0000ffffU))
1116 flags |= ev_recommended_backends (); 1652 flags |= ev_recommended_backends ();
1117 1653
1118#if EV_USE_PORT 1654#if EV_USE_PORT
1119 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1120#endif 1656#endif
… …
1129#endif 1665#endif
1130#if EV_USE_SELECT 1666#if EV_USE_SELECT
1131 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1667 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1132#endif 1668#endif
1133 1669
1670 ev_prepare_init (&pending_w, pendingcb);
1671
1672#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1134 ev_init (&pipeev, pipecb); 1673 ev_init (&pipe_w, pipecb);
1135 ev_set_priority (&pipeev, EV_MAXPRI); 1674 ev_set_priority (&pipe_w, EV_MAXPRI);
1675#endif
1136 } 1676 }
1137} 1677}
1138 1678
1679/* free up a loop structure */
1139static void noinline 1680static void noinline
1140loop_destroy (EV_P) 1681loop_destroy (EV_P)
1141{ 1682{
1142 int i; 1683 int i;
1143 1684
1144 if (ev_is_active (&pipeev)) 1685 if (ev_is_active (&pipe_w))
1145 { 1686 {
1146 ev_ref (EV_A); /* signal watcher */ 1687 /*ev_ref (EV_A);*/
1147 ev_io_stop (EV_A_ &pipeev); 1688 /*ev_io_stop (EV_A_ &pipe_w);*/
1148 1689
1149 close (evpipe [0]); evpipe [0] = 0; 1690#if EV_USE_EVENTFD
1150 close (evpipe [1]); evpipe [1] = 0; 1691 if (evfd >= 0)
1692 close (evfd);
1693#endif
1694
1695 if (evpipe [0] >= 0)
1696 {
1697 EV_WIN32_CLOSE_FD (evpipe [0]);
1698 EV_WIN32_CLOSE_FD (evpipe [1]);
1699 }
1151 } 1700 }
1701
1702#if EV_USE_SIGNALFD
1703 if (ev_is_active (&sigfd_w))
1704 close (sigfd);
1705#endif
1152 1706
1153#if EV_USE_INOTIFY 1707#if EV_USE_INOTIFY
1154 if (fs_fd >= 0) 1708 if (fs_fd >= 0)
1155 close (fs_fd); 1709 close (fs_fd);
1156#endif 1710#endif
… …
1180#if EV_IDLE_ENABLE 1734#if EV_IDLE_ENABLE
1181 array_free (idle, [i]); 1735 array_free (idle, [i]);
1182#endif 1736#endif
1183 } 1737 }
1184 1738
1185 ev_free (anfds); anfdmax = 0; 1739 ev_free (anfds); anfds = 0; anfdmax = 0;
1186 1740
1187 /* have to use the microsoft-never-gets-it-right macro */ 1741 /* have to use the microsoft-never-gets-it-right macro */
1742 array_free (rfeed, EMPTY);
1188 array_free (fdchange, EMPTY); 1743 array_free (fdchange, EMPTY);
1189 array_free (timer, EMPTY); 1744 array_free (timer, EMPTY);
1190#if EV_PERIODIC_ENABLE 1745#if EV_PERIODIC_ENABLE
1191 array_free (periodic, EMPTY); 1746 array_free (periodic, EMPTY);
1192#endif 1747#endif
… …
1200#endif 1755#endif
1201 1756
1202 backend = 0; 1757 backend = 0;
1203} 1758}
1204 1759
1760#if EV_USE_INOTIFY
1205void inline_size infy_fork (EV_P); 1761inline_size void infy_fork (EV_P);
1762#endif
1206 1763
1207void inline_size 1764inline_size void
1208loop_fork (EV_P) 1765loop_fork (EV_P)
1209{ 1766{
1210#if EV_USE_PORT 1767#if EV_USE_PORT
1211 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1768 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1212#endif 1769#endif
… …
1218#endif 1775#endif
1219#if EV_USE_INOTIFY 1776#if EV_USE_INOTIFY
1220 infy_fork (EV_A); 1777 infy_fork (EV_A);
1221#endif 1778#endif
1222 1779
1223 if (ev_is_active (&pipeev)) 1780 if (ev_is_active (&pipe_w))
1224 { 1781 {
1225 /* this "locks" the handlers against writing to the pipe */ 1782 /* this "locks" the handlers against writing to the pipe */
1226 gotsig = gotasync = 1; 1783 /* while we modify the fd vars */
1784 sig_pending = 1;
1785#if EV_ASYNC_ENABLE
1786 async_pending = 1;
1787#endif
1227 1788
1228 ev_ref (EV_A); 1789 ev_ref (EV_A);
1229 ev_io_stop (EV_A_ &pipeev); 1790 ev_io_stop (EV_A_ &pipe_w);
1230 close (evpipe [0]);
1231 close (evpipe [1]);
1232 1791
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 close (evfd);
1795#endif
1796
1797 if (evpipe [0] >= 0)
1798 {
1799 EV_WIN32_CLOSE_FD (evpipe [0]);
1800 EV_WIN32_CLOSE_FD (evpipe [1]);
1801 }
1802
1803#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 evpipe_init (EV_A); 1804 evpipe_init (EV_A);
1234 /* now iterate over everything, in case we missed something */ 1805 /* now iterate over everything, in case we missed something */
1235 pipecb (EV_A_ &pipeev, EV_READ); 1806 pipecb (EV_A_ &pipe_w, EV_READ);
1807#endif
1236 } 1808 }
1237 1809
1238 postfork = 0; 1810 postfork = 0;
1239} 1811}
1240 1812
1241#if EV_MULTIPLICITY 1813#if EV_MULTIPLICITY
1814
1242struct ev_loop * 1815struct ev_loop *
1243ev_loop_new (unsigned int flags) 1816ev_loop_new (unsigned int flags)
1244{ 1817{
1245 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1246 1819
1247 memset (loop, 0, sizeof (struct ev_loop)); 1820 memset (EV_A, 0, sizeof (struct ev_loop));
1248
1249 loop_init (EV_A_ flags); 1821 loop_init (EV_A_ flags);
1250 1822
1251 if (ev_backend (EV_A)) 1823 if (ev_backend (EV_A))
1252 return loop; 1824 return EV_A;
1253 1825
1254 return 0; 1826 return 0;
1255} 1827}
1256 1828
1257void 1829void
… …
1264void 1836void
1265ev_loop_fork (EV_P) 1837ev_loop_fork (EV_P)
1266{ 1838{
1267 postfork = 1; /* must be in line with ev_default_fork */ 1839 postfork = 1; /* must be in line with ev_default_fork */
1268} 1840}
1841#endif /* multiplicity */
1269 1842
1843#if EV_VERIFY
1844static void noinline
1845verify_watcher (EV_P_ W w)
1846{
1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1848
1849 if (w->pending)
1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1851}
1852
1853static void noinline
1854verify_heap (EV_P_ ANHE *heap, int N)
1855{
1856 int i;
1857
1858 for (i = HEAP0; i < N + HEAP0; ++i)
1859 {
1860 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1861 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1862 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1863
1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1865 }
1866}
1867
1868static void noinline
1869array_verify (EV_P_ W *ws, int cnt)
1870{
1871 while (cnt--)
1872 {
1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1874 verify_watcher (EV_A_ ws [cnt]);
1875 }
1876}
1877#endif
1878
1879#if EV_MINIMAL < 2
1880void
1881ev_loop_verify (EV_P)
1882{
1883#if EV_VERIFY
1884 int i;
1885 WL w;
1886
1887 assert (activecnt >= -1);
1888
1889 assert (fdchangemax >= fdchangecnt);
1890 for (i = 0; i < fdchangecnt; ++i)
1891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1892
1893 assert (anfdmax >= 0);
1894 for (i = 0; i < anfdmax; ++i)
1895 for (w = anfds [i].head; w; w = w->next)
1896 {
1897 verify_watcher (EV_A_ (W)w);
1898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1900 }
1901
1902 assert (timermax >= timercnt);
1903 verify_heap (EV_A_ timers, timercnt);
1904
1905#if EV_PERIODIC_ENABLE
1906 assert (periodicmax >= periodiccnt);
1907 verify_heap (EV_A_ periodics, periodiccnt);
1908#endif
1909
1910 for (i = NUMPRI; i--; )
1911 {
1912 assert (pendingmax [i] >= pendingcnt [i]);
1913#if EV_IDLE_ENABLE
1914 assert (idleall >= 0);
1915 assert (idlemax [i] >= idlecnt [i]);
1916 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1917#endif
1918 }
1919
1920#if EV_FORK_ENABLE
1921 assert (forkmax >= forkcnt);
1922 array_verify (EV_A_ (W *)forks, forkcnt);
1923#endif
1924
1925#if EV_ASYNC_ENABLE
1926 assert (asyncmax >= asynccnt);
1927 array_verify (EV_A_ (W *)asyncs, asynccnt);
1928#endif
1929
1930#if EV_PREPARE_ENABLE
1931 assert (preparemax >= preparecnt);
1932 array_verify (EV_A_ (W *)prepares, preparecnt);
1933#endif
1934
1935#if EV_CHECK_ENABLE
1936 assert (checkmax >= checkcnt);
1937 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif
1939
1940# if 0
1941#if EV_CHILD_ENABLE
1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif
1945# endif
1946#endif
1947}
1270#endif 1948#endif
1271 1949
1272#if EV_MULTIPLICITY 1950#if EV_MULTIPLICITY
1273struct ev_loop * 1951struct ev_loop *
1274ev_default_loop_init (unsigned int flags) 1952ev_default_loop_init (unsigned int flags)
… …
1278#endif 1956#endif
1279{ 1957{
1280 if (!ev_default_loop_ptr) 1958 if (!ev_default_loop_ptr)
1281 { 1959 {
1282#if EV_MULTIPLICITY 1960#if EV_MULTIPLICITY
1283 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1961 EV_P = ev_default_loop_ptr = &default_loop_struct;
1284#else 1962#else
1285 ev_default_loop_ptr = 1; 1963 ev_default_loop_ptr = 1;
1286#endif 1964#endif
1287 1965
1288 loop_init (EV_A_ flags); 1966 loop_init (EV_A_ flags);
1289 1967
1290 if (ev_backend (EV_A)) 1968 if (ev_backend (EV_A))
1291 { 1969 {
1292#ifndef _WIN32 1970#if EV_CHILD_ENABLE
1293 ev_signal_init (&childev, childcb, SIGCHLD); 1971 ev_signal_init (&childev, childcb, SIGCHLD);
1294 ev_set_priority (&childev, EV_MAXPRI); 1972 ev_set_priority (&childev, EV_MAXPRI);
1295 ev_signal_start (EV_A_ &childev); 1973 ev_signal_start (EV_A_ &childev);
1296 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1974 ev_unref (EV_A); /* child watcher should not keep loop alive */
1297#endif 1975#endif
… …
1305 1983
1306void 1984void
1307ev_default_destroy (void) 1985ev_default_destroy (void)
1308{ 1986{
1309#if EV_MULTIPLICITY 1987#if EV_MULTIPLICITY
1310 struct ev_loop *loop = ev_default_loop_ptr; 1988 EV_P = ev_default_loop_ptr;
1311#endif 1989#endif
1312 1990
1313#ifndef _WIN32 1991 ev_default_loop_ptr = 0;
1992
1993#if EV_CHILD_ENABLE
1314 ev_ref (EV_A); /* child watcher */ 1994 ev_ref (EV_A); /* child watcher */
1315 ev_signal_stop (EV_A_ &childev); 1995 ev_signal_stop (EV_A_ &childev);
1316#endif 1996#endif
1317 1997
1318 loop_destroy (EV_A); 1998 loop_destroy (EV_A);
… …
1320 2000
1321void 2001void
1322ev_default_fork (void) 2002ev_default_fork (void)
1323{ 2003{
1324#if EV_MULTIPLICITY 2004#if EV_MULTIPLICITY
1325 struct ev_loop *loop = ev_default_loop_ptr; 2005 EV_P = ev_default_loop_ptr;
1326#endif 2006#endif
1327 2007
1328 if (backend)
1329 postfork = 1; /* must be in line with ev_loop_fork */ 2008 postfork = 1; /* must be in line with ev_loop_fork */
1330} 2009}
1331 2010
1332/*****************************************************************************/ 2011/*****************************************************************************/
1333 2012
1334void 2013void
1335ev_invoke (EV_P_ void *w, int revents) 2014ev_invoke (EV_P_ void *w, int revents)
1336{ 2015{
1337 EV_CB_INVOKE ((W)w, revents); 2016 EV_CB_INVOKE ((W)w, revents);
1338} 2017}
1339 2018
1340void inline_speed 2019unsigned int
1341call_pending (EV_P) 2020ev_pending_count (EV_P)
2021{
2022 int pri;
2023 unsigned int count = 0;
2024
2025 for (pri = NUMPRI; pri--; )
2026 count += pendingcnt [pri];
2027
2028 return count;
2029}
2030
2031void noinline
2032ev_invoke_pending (EV_P)
1342{ 2033{
1343 int pri; 2034 int pri;
1344 2035
1345 for (pri = NUMPRI; pri--; ) 2036 for (pri = NUMPRI; pri--; )
1346 while (pendingcnt [pri]) 2037 while (pendingcnt [pri])
1347 { 2038 {
1348 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1349 2040
1350 if (expect_true (p->w))
1351 {
1352 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2041 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2042 /* ^ this is no longer true, as pending_w could be here */
1353 2043
1354 p->w->pending = 0; 2044 p->w->pending = 0;
1355 EV_CB_INVOKE (p->w, p->events); 2045 EV_CB_INVOKE (p->w, p->events);
1356 } 2046 EV_FREQUENT_CHECK;
1357 } 2047 }
1358} 2048}
1359 2049
1360void inline_size
1361timers_reify (EV_P)
1362{
1363 while (timercnt && ((WT)timers [0])->at <= mn_now)
1364 {
1365 ev_timer *w = (ev_timer *)timers [0];
1366
1367 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1368
1369 /* first reschedule or stop timer */
1370 if (w->repeat)
1371 {
1372 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1373
1374 ((WT)w)->at += w->repeat;
1375 if (((WT)w)->at < mn_now)
1376 ((WT)w)->at = mn_now;
1377
1378 downheap (timers, timercnt, 0);
1379 }
1380 else
1381 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1382
1383 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1384 }
1385}
1386
1387#if EV_PERIODIC_ENABLE
1388void inline_size
1389periodics_reify (EV_P)
1390{
1391 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1392 {
1393 ev_periodic *w = (ev_periodic *)periodics [0];
1394
1395 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1396
1397 /* first reschedule or stop timer */
1398 if (w->reschedule_cb)
1399 {
1400 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1401 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1402 downheap (periodics, periodiccnt, 0);
1403 }
1404 else if (w->interval)
1405 {
1406 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1407 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1408 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1409 downheap (periodics, periodiccnt, 0);
1410 }
1411 else
1412 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1413
1414 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1415 }
1416}
1417
1418static void noinline
1419periodics_reschedule (EV_P)
1420{
1421 int i;
1422
1423 /* adjust periodics after time jump */
1424 for (i = 0; i < periodiccnt; ++i)
1425 {
1426 ev_periodic *w = (ev_periodic *)periodics [i];
1427
1428 if (w->reschedule_cb)
1429 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1430 else if (w->interval)
1431 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1432 }
1433
1434 /* now rebuild the heap */
1435 for (i = periodiccnt >> 1; i--; )
1436 downheap (periodics, periodiccnt, i);
1437}
1438#endif
1439
1440#if EV_IDLE_ENABLE 2050#if EV_IDLE_ENABLE
1441void inline_size 2051/* make idle watchers pending. this handles the "call-idle */
2052/* only when higher priorities are idle" logic */
2053inline_size void
1442idle_reify (EV_P) 2054idle_reify (EV_P)
1443{ 2055{
1444 if (expect_false (idleall)) 2056 if (expect_false (idleall))
1445 { 2057 {
1446 int pri; 2058 int pri;
… …
1458 } 2070 }
1459 } 2071 }
1460} 2072}
1461#endif 2073#endif
1462 2074
1463void inline_speed 2075/* make timers pending */
2076inline_size void
2077timers_reify (EV_P)
2078{
2079 EV_FREQUENT_CHECK;
2080
2081 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2082 {
2083 do
2084 {
2085 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2086
2087 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2088
2089 /* first reschedule or stop timer */
2090 if (w->repeat)
2091 {
2092 ev_at (w) += w->repeat;
2093 if (ev_at (w) < mn_now)
2094 ev_at (w) = mn_now;
2095
2096 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2097
2098 ANHE_at_cache (timers [HEAP0]);
2099 downheap (timers, timercnt, HEAP0);
2100 }
2101 else
2102 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2103
2104 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w);
2106 }
2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2108
2109 feed_reverse_done (EV_A_ EV_TIMEOUT);
2110 }
2111}
2112
2113#if EV_PERIODIC_ENABLE
2114/* make periodics pending */
2115inline_size void
2116periodics_reify (EV_P)
2117{
2118 EV_FREQUENT_CHECK;
2119
2120 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2121 {
2122 int feed_count = 0;
2123
2124 do
2125 {
2126 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2127
2128 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2129
2130 /* first reschedule or stop timer */
2131 if (w->reschedule_cb)
2132 {
2133 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2134
2135 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2136
2137 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0);
2139 }
2140 else if (w->interval)
2141 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2143 /* if next trigger time is not sufficiently in the future, put it there */
2144 /* this might happen because of floating point inexactness */
2145 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2146 {
2147 ev_at (w) += w->interval;
2148
2149 /* if interval is unreasonably low we might still have a time in the past */
2150 /* so correct this. this will make the periodic very inexact, but the user */
2151 /* has effectively asked to get triggered more often than possible */
2152 if (ev_at (w) < ev_rt_now)
2153 ev_at (w) = ev_rt_now;
2154 }
2155
2156 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0);
2158 }
2159 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2161
2162 EV_FREQUENT_CHECK;
2163 feed_reverse (EV_A_ (W)w);
2164 }
2165 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2166
2167 feed_reverse_done (EV_A_ EV_PERIODIC);
2168 }
2169}
2170
2171/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2173static void noinline
2174periodics_reschedule (EV_P)
2175{
2176 int i;
2177
2178 /* adjust periodics after time jump */
2179 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2180 {
2181 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2182
2183 if (w->reschedule_cb)
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185 else if (w->interval)
2186 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2187
2188 ANHE_at_cache (periodics [i]);
2189 }
2190
2191 reheap (periodics, periodiccnt);
2192}
2193#endif
2194
2195/* adjust all timers by a given offset */
2196static void noinline
2197timers_reschedule (EV_P_ ev_tstamp adjust)
2198{
2199 int i;
2200
2201 for (i = 0; i < timercnt; ++i)
2202 {
2203 ANHE *he = timers + i + HEAP0;
2204 ANHE_w (*he)->at += adjust;
2205 ANHE_at_cache (*he);
2206 }
2207}
2208
2209/* fetch new monotonic and realtime times from the kernel */
2210/* also detect if there was a timejump, and act accordingly */
2211inline_speed void
1464time_update (EV_P_ ev_tstamp max_block) 2212time_update (EV_P_ ev_tstamp max_block)
1465{ 2213{
1466 int i;
1467
1468#if EV_USE_MONOTONIC 2214#if EV_USE_MONOTONIC
1469 if (expect_true (have_monotonic)) 2215 if (expect_true (have_monotonic))
1470 { 2216 {
2217 int i;
1471 ev_tstamp odiff = rtmn_diff; 2218 ev_tstamp odiff = rtmn_diff;
1472 2219
1473 mn_now = get_clock (); 2220 mn_now = get_clock ();
1474 2221
1475 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2222 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1493 */ 2240 */
1494 for (i = 4; --i; ) 2241 for (i = 4; --i; )
1495 { 2242 {
1496 rtmn_diff = ev_rt_now - mn_now; 2243 rtmn_diff = ev_rt_now - mn_now;
1497 2244
1498 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2245 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1499 return; /* all is well */ 2246 return; /* all is well */
1500 2247
1501 ev_rt_now = ev_time (); 2248 ev_rt_now = ev_time ();
1502 mn_now = get_clock (); 2249 mn_now = get_clock ();
1503 now_floor = mn_now; 2250 now_floor = mn_now;
1504 } 2251 }
1505 2252
2253 /* no timer adjustment, as the monotonic clock doesn't jump */
2254 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1506# if EV_PERIODIC_ENABLE 2255# if EV_PERIODIC_ENABLE
1507 periodics_reschedule (EV_A); 2256 periodics_reschedule (EV_A);
1508# endif 2257# endif
1509 /* no timer adjustment, as the monotonic clock doesn't jump */
1510 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1511 } 2258 }
1512 else 2259 else
1513#endif 2260#endif
1514 { 2261 {
1515 ev_rt_now = ev_time (); 2262 ev_rt_now = ev_time ();
1516 2263
1517 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2264 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1518 { 2265 {
2266 /* adjust timers. this is easy, as the offset is the same for all of them */
2267 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1519#if EV_PERIODIC_ENABLE 2268#if EV_PERIODIC_ENABLE
1520 periodics_reschedule (EV_A); 2269 periodics_reschedule (EV_A);
1521#endif 2270#endif
1522 /* adjust timers. this is easy, as the offset is the same for all of them */
1523 for (i = 0; i < timercnt; ++i)
1524 ((WT)timers [i])->at += ev_rt_now - mn_now;
1525 } 2271 }
1526 2272
1527 mn_now = ev_rt_now; 2273 mn_now = ev_rt_now;
1528 } 2274 }
1529} 2275}
1530 2276
1531void 2277void
1532ev_ref (EV_P)
1533{
1534 ++activecnt;
1535}
1536
1537void
1538ev_unref (EV_P)
1539{
1540 --activecnt;
1541}
1542
1543static int loop_done;
1544
1545void
1546ev_loop (EV_P_ int flags) 2278ev_loop (EV_P_ int flags)
1547{ 2279{
1548 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2280#if EV_MINIMAL < 2
1549 ? EVUNLOOP_ONE 2281 ++loop_depth;
1550 : EVUNLOOP_CANCEL; 2282#endif
1551 2283
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2285
2286 loop_done = EVUNLOOP_CANCEL;
2287
1552 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1553 2289
1554 do 2290 do
1555 { 2291 {
2292#if EV_VERIFY >= 2
2293 ev_loop_verify (EV_A);
2294#endif
2295
1556#ifndef _WIN32 2296#ifndef _WIN32
1557 if (expect_false (curpid)) /* penalise the forking check even more */ 2297 if (expect_false (curpid)) /* penalise the forking check even more */
1558 if (expect_false (getpid () != curpid)) 2298 if (expect_false (getpid () != curpid))
1559 { 2299 {
1560 curpid = getpid (); 2300 curpid = getpid ();
… …
1566 /* we might have forked, so queue fork handlers */ 2306 /* we might have forked, so queue fork handlers */
1567 if (expect_false (postfork)) 2307 if (expect_false (postfork))
1568 if (forkcnt) 2308 if (forkcnt)
1569 { 2309 {
1570 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2310 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1571 call_pending (EV_A); 2311 EV_INVOKE_PENDING;
1572 } 2312 }
1573#endif 2313#endif
1574 2314
2315#if EV_PREPARE_ENABLE
1575 /* queue prepare watchers (and execute them) */ 2316 /* queue prepare watchers (and execute them) */
1576 if (expect_false (preparecnt)) 2317 if (expect_false (preparecnt))
1577 { 2318 {
1578 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2319 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1579 call_pending (EV_A); 2320 EV_INVOKE_PENDING;
1580 } 2321 }
2322#endif
1581 2323
1582 if (expect_false (!activecnt)) 2324 if (expect_false (loop_done))
1583 break; 2325 break;
1584 2326
1585 /* we might have forked, so reify kernel state if necessary */ 2327 /* we might have forked, so reify kernel state if necessary */
1586 if (expect_false (postfork)) 2328 if (expect_false (postfork))
1587 loop_fork (EV_A); 2329 loop_fork (EV_A);
… …
1594 ev_tstamp waittime = 0.; 2336 ev_tstamp waittime = 0.;
1595 ev_tstamp sleeptime = 0.; 2337 ev_tstamp sleeptime = 0.;
1596 2338
1597 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1598 { 2340 {
2341 /* remember old timestamp for io_blocktime calculation */
2342 ev_tstamp prev_mn_now = mn_now;
2343
1599 /* update time to cancel out callback processing overhead */ 2344 /* update time to cancel out callback processing overhead */
1600 time_update (EV_A_ 1e100); 2345 time_update (EV_A_ 1e100);
1601 2346
1602 waittime = MAX_BLOCKTIME; 2347 waittime = MAX_BLOCKTIME;
1603 2348
1604 if (timercnt) 2349 if (timercnt)
1605 { 2350 {
1606 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1607 if (waittime > to) waittime = to; 2352 if (waittime > to) waittime = to;
1608 } 2353 }
1609 2354
1610#if EV_PERIODIC_ENABLE 2355#if EV_PERIODIC_ENABLE
1611 if (periodiccnt) 2356 if (periodiccnt)
1612 { 2357 {
1613 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1614 if (waittime > to) waittime = to; 2359 if (waittime > to) waittime = to;
1615 } 2360 }
1616#endif 2361#endif
1617 2362
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */
1618 if (expect_false (waittime < timeout_blocktime)) 2364 if (expect_false (waittime < timeout_blocktime))
1619 waittime = timeout_blocktime; 2365 waittime = timeout_blocktime;
1620 2366
1621 sleeptime = waittime - backend_fudge; 2367 /* extra check because io_blocktime is commonly 0 */
1622
1623 if (expect_true (sleeptime > io_blocktime)) 2368 if (expect_false (io_blocktime))
1624 sleeptime = io_blocktime;
1625
1626 if (sleeptime)
1627 { 2369 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371
2372 if (sleeptime > waittime - backend_fudge)
2373 sleeptime = waittime - backend_fudge;
2374
2375 if (expect_true (sleeptime > 0.))
2376 {
1628 ev_sleep (sleeptime); 2377 ev_sleep (sleeptime);
1629 waittime -= sleeptime; 2378 waittime -= sleeptime;
2379 }
1630 } 2380 }
1631 } 2381 }
1632 2382
2383#if EV_MINIMAL < 2
1633 ++loop_count; 2384 ++loop_count;
2385#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1634 backend_poll (EV_A_ waittime); 2387 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1635 2389
1636 /* update ev_rt_now, do magic */ 2390 /* update ev_rt_now, do magic */
1637 time_update (EV_A_ waittime + sleeptime); 2391 time_update (EV_A_ waittime + sleeptime);
1638 } 2392 }
1639 2393
… …
1646#if EV_IDLE_ENABLE 2400#if EV_IDLE_ENABLE
1647 /* queue idle watchers unless other events are pending */ 2401 /* queue idle watchers unless other events are pending */
1648 idle_reify (EV_A); 2402 idle_reify (EV_A);
1649#endif 2403#endif
1650 2404
2405#if EV_CHECK_ENABLE
1651 /* queue check watchers, to be executed first */ 2406 /* queue check watchers, to be executed first */
1652 if (expect_false (checkcnt)) 2407 if (expect_false (checkcnt))
1653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2408 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2409#endif
1654 2410
1655 call_pending (EV_A); 2411 EV_INVOKE_PENDING;
1656
1657 } 2412 }
1658 while (expect_true (activecnt && !loop_done)); 2413 while (expect_true (
2414 activecnt
2415 && !loop_done
2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2417 ));
1659 2418
1660 if (loop_done == EVUNLOOP_ONE) 2419 if (loop_done == EVUNLOOP_ONE)
1661 loop_done = EVUNLOOP_CANCEL; 2420 loop_done = EVUNLOOP_CANCEL;
2421
2422#if EV_MINIMAL < 2
2423 --loop_depth;
2424#endif
1662} 2425}
1663 2426
1664void 2427void
1665ev_unloop (EV_P_ int how) 2428ev_unloop (EV_P_ int how)
1666{ 2429{
1667 loop_done = how; 2430 loop_done = how;
1668} 2431}
1669 2432
2433void
2434ev_ref (EV_P)
2435{
2436 ++activecnt;
2437}
2438
2439void
2440ev_unref (EV_P)
2441{
2442 --activecnt;
2443}
2444
2445void
2446ev_now_update (EV_P)
2447{
2448 time_update (EV_A_ 1e100);
2449}
2450
2451void
2452ev_suspend (EV_P)
2453{
2454 ev_now_update (EV_A);
2455}
2456
2457void
2458ev_resume (EV_P)
2459{
2460 ev_tstamp mn_prev = mn_now;
2461
2462 ev_now_update (EV_A);
2463 timers_reschedule (EV_A_ mn_now - mn_prev);
2464#if EV_PERIODIC_ENABLE
2465 /* TODO: really do this? */
2466 periodics_reschedule (EV_A);
2467#endif
2468}
2469
1670/*****************************************************************************/ 2470/*****************************************************************************/
2471/* singly-linked list management, used when the expected list length is short */
1671 2472
1672void inline_size 2473inline_size void
1673wlist_add (WL *head, WL elem) 2474wlist_add (WL *head, WL elem)
1674{ 2475{
1675 elem->next = *head; 2476 elem->next = *head;
1676 *head = elem; 2477 *head = elem;
1677} 2478}
1678 2479
1679void inline_size 2480inline_size void
1680wlist_del (WL *head, WL elem) 2481wlist_del (WL *head, WL elem)
1681{ 2482{
1682 while (*head) 2483 while (*head)
1683 { 2484 {
1684 if (*head == elem) 2485 if (expect_true (*head == elem))
1685 { 2486 {
1686 *head = elem->next; 2487 *head = elem->next;
1687 return; 2488 break;
1688 } 2489 }
1689 2490
1690 head = &(*head)->next; 2491 head = &(*head)->next;
1691 } 2492 }
1692} 2493}
1693 2494
1694void inline_speed 2495/* internal, faster, version of ev_clear_pending */
2496inline_speed void
1695clear_pending (EV_P_ W w) 2497clear_pending (EV_P_ W w)
1696{ 2498{
1697 if (w->pending) 2499 if (w->pending)
1698 { 2500 {
1699 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2501 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1700 w->pending = 0; 2502 w->pending = 0;
1701 } 2503 }
1702} 2504}
1703 2505
1704int 2506int
… …
1708 int pending = w_->pending; 2510 int pending = w_->pending;
1709 2511
1710 if (expect_true (pending)) 2512 if (expect_true (pending))
1711 { 2513 {
1712 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2514 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2515 p->w = (W)&pending_w;
1713 w_->pending = 0; 2516 w_->pending = 0;
1714 p->w = 0;
1715 return p->events; 2517 return p->events;
1716 } 2518 }
1717 else 2519 else
1718 return 0; 2520 return 0;
1719} 2521}
1720 2522
1721void inline_size 2523inline_size void
1722pri_adjust (EV_P_ W w) 2524pri_adjust (EV_P_ W w)
1723{ 2525{
1724 int pri = w->priority; 2526 int pri = ev_priority (w);
1725 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2527 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1726 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2528 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1727 w->priority = pri; 2529 ev_set_priority (w, pri);
1728} 2530}
1729 2531
1730void inline_speed 2532inline_speed void
1731ev_start (EV_P_ W w, int active) 2533ev_start (EV_P_ W w, int active)
1732{ 2534{
1733 pri_adjust (EV_A_ w); 2535 pri_adjust (EV_A_ w);
1734 w->active = active; 2536 w->active = active;
1735 ev_ref (EV_A); 2537 ev_ref (EV_A);
1736} 2538}
1737 2539
1738void inline_size 2540inline_size void
1739ev_stop (EV_P_ W w) 2541ev_stop (EV_P_ W w)
1740{ 2542{
1741 ev_unref (EV_A); 2543 ev_unref (EV_A);
1742 w->active = 0; 2544 w->active = 0;
1743} 2545}
… …
1750 int fd = w->fd; 2552 int fd = w->fd;
1751 2553
1752 if (expect_false (ev_is_active (w))) 2554 if (expect_false (ev_is_active (w)))
1753 return; 2555 return;
1754 2556
1755 assert (("ev_io_start called with negative fd", fd >= 0)); 2557 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2558 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2559
2560 EV_FREQUENT_CHECK;
1756 2561
1757 ev_start (EV_A_ (W)w, 1); 2562 ev_start (EV_A_ (W)w, 1);
1758 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1759 wlist_add (&anfds[fd].head, (WL)w); 2564 wlist_add (&anfds[fd].head, (WL)w);
1760 2565
1761 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2566 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1762 w->events &= ~EV_IOFDSET; 2567 w->events &= ~EV__IOFDSET;
2568
2569 EV_FREQUENT_CHECK;
1763} 2570}
1764 2571
1765void noinline 2572void noinline
1766ev_io_stop (EV_P_ ev_io *w) 2573ev_io_stop (EV_P_ ev_io *w)
1767{ 2574{
1768 clear_pending (EV_A_ (W)w); 2575 clear_pending (EV_A_ (W)w);
1769 if (expect_false (!ev_is_active (w))) 2576 if (expect_false (!ev_is_active (w)))
1770 return; 2577 return;
1771 2578
1772 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2579 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2580
2581 EV_FREQUENT_CHECK;
1773 2582
1774 wlist_del (&anfds[w->fd].head, (WL)w); 2583 wlist_del (&anfds[w->fd].head, (WL)w);
1775 ev_stop (EV_A_ (W)w); 2584 ev_stop (EV_A_ (W)w);
1776 2585
1777 fd_change (EV_A_ w->fd, 1); 2586 fd_change (EV_A_ w->fd, 1);
2587
2588 EV_FREQUENT_CHECK;
1778} 2589}
1779 2590
1780void noinline 2591void noinline
1781ev_timer_start (EV_P_ ev_timer *w) 2592ev_timer_start (EV_P_ ev_timer *w)
1782{ 2593{
1783 if (expect_false (ev_is_active (w))) 2594 if (expect_false (ev_is_active (w)))
1784 return; 2595 return;
1785 2596
1786 ((WT)w)->at += mn_now; 2597 ev_at (w) += mn_now;
1787 2598
1788 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2599 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1789 2600
2601 EV_FREQUENT_CHECK;
2602
2603 ++timercnt;
1790 ev_start (EV_A_ (W)w, ++timercnt); 2604 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1791 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2605 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1792 timers [timercnt - 1] = (WT)w; 2606 ANHE_w (timers [ev_active (w)]) = (WT)w;
1793 upheap (timers, timercnt - 1); 2607 ANHE_at_cache (timers [ev_active (w)]);
2608 upheap (timers, ev_active (w));
1794 2609
2610 EV_FREQUENT_CHECK;
2611
1795 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2612 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1796} 2613}
1797 2614
1798void noinline 2615void noinline
1799ev_timer_stop (EV_P_ ev_timer *w) 2616ev_timer_stop (EV_P_ ev_timer *w)
1800{ 2617{
1801 clear_pending (EV_A_ (W)w); 2618 clear_pending (EV_A_ (W)w);
1802 if (expect_false (!ev_is_active (w))) 2619 if (expect_false (!ev_is_active (w)))
1803 return; 2620 return;
1804 2621
1805 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2622 EV_FREQUENT_CHECK;
1806 2623
1807 { 2624 {
1808 int active = ((W)w)->active; 2625 int active = ev_active (w);
1809 2626
2627 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2628
2629 --timercnt;
2630
1810 if (expect_true (--active < --timercnt)) 2631 if (expect_true (active < timercnt + HEAP0))
1811 { 2632 {
1812 timers [active] = timers [timercnt]; 2633 timers [active] = timers [timercnt + HEAP0];
1813 adjustheap (timers, timercnt, active); 2634 adjustheap (timers, timercnt, active);
1814 } 2635 }
1815 } 2636 }
1816 2637
1817 ((WT)w)->at -= mn_now; 2638 ev_at (w) -= mn_now;
1818 2639
1819 ev_stop (EV_A_ (W)w); 2640 ev_stop (EV_A_ (W)w);
2641
2642 EV_FREQUENT_CHECK;
1820} 2643}
1821 2644
1822void noinline 2645void noinline
1823ev_timer_again (EV_P_ ev_timer *w) 2646ev_timer_again (EV_P_ ev_timer *w)
1824{ 2647{
2648 EV_FREQUENT_CHECK;
2649
1825 if (ev_is_active (w)) 2650 if (ev_is_active (w))
1826 { 2651 {
1827 if (w->repeat) 2652 if (w->repeat)
1828 { 2653 {
1829 ((WT)w)->at = mn_now + w->repeat; 2654 ev_at (w) = mn_now + w->repeat;
2655 ANHE_at_cache (timers [ev_active (w)]);
1830 adjustheap (timers, timercnt, ((W)w)->active - 1); 2656 adjustheap (timers, timercnt, ev_active (w));
1831 } 2657 }
1832 else 2658 else
1833 ev_timer_stop (EV_A_ w); 2659 ev_timer_stop (EV_A_ w);
1834 } 2660 }
1835 else if (w->repeat) 2661 else if (w->repeat)
1836 { 2662 {
1837 w->at = w->repeat; 2663 ev_at (w) = w->repeat;
1838 ev_timer_start (EV_A_ w); 2664 ev_timer_start (EV_A_ w);
1839 } 2665 }
2666
2667 EV_FREQUENT_CHECK;
2668}
2669
2670ev_tstamp
2671ev_timer_remaining (EV_P_ ev_timer *w)
2672{
2673 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1840} 2674}
1841 2675
1842#if EV_PERIODIC_ENABLE 2676#if EV_PERIODIC_ENABLE
1843void noinline 2677void noinline
1844ev_periodic_start (EV_P_ ev_periodic *w) 2678ev_periodic_start (EV_P_ ev_periodic *w)
1845{ 2679{
1846 if (expect_false (ev_is_active (w))) 2680 if (expect_false (ev_is_active (w)))
1847 return; 2681 return;
1848 2682
1849 if (w->reschedule_cb) 2683 if (w->reschedule_cb)
1850 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1851 else if (w->interval) 2685 else if (w->interval)
1852 { 2686 {
1853 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1854 /* this formula differs from the one in periodic_reify because we do not always round up */ 2688 /* this formula differs from the one in periodic_reify because we do not always round up */
1855 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1856 } 2690 }
1857 else 2691 else
1858 ((WT)w)->at = w->offset; 2692 ev_at (w) = w->offset;
1859 2693
2694 EV_FREQUENT_CHECK;
2695
2696 ++periodiccnt;
1860 ev_start (EV_A_ (W)w, ++periodiccnt); 2697 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1861 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2698 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1862 periodics [periodiccnt - 1] = (WT)w; 2699 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1863 upheap (periodics, periodiccnt - 1); 2700 ANHE_at_cache (periodics [ev_active (w)]);
2701 upheap (periodics, ev_active (w));
1864 2702
2703 EV_FREQUENT_CHECK;
2704
1865 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1866} 2706}
1867 2707
1868void noinline 2708void noinline
1869ev_periodic_stop (EV_P_ ev_periodic *w) 2709ev_periodic_stop (EV_P_ ev_periodic *w)
1870{ 2710{
1871 clear_pending (EV_A_ (W)w); 2711 clear_pending (EV_A_ (W)w);
1872 if (expect_false (!ev_is_active (w))) 2712 if (expect_false (!ev_is_active (w)))
1873 return; 2713 return;
1874 2714
1875 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2715 EV_FREQUENT_CHECK;
1876 2716
1877 { 2717 {
1878 int active = ((W)w)->active; 2718 int active = ev_active (w);
1879 2719
2720 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2721
2722 --periodiccnt;
2723
1880 if (expect_true (--active < --periodiccnt)) 2724 if (expect_true (active < periodiccnt + HEAP0))
1881 { 2725 {
1882 periodics [active] = periodics [periodiccnt]; 2726 periodics [active] = periodics [periodiccnt + HEAP0];
1883 adjustheap (periodics, periodiccnt, active); 2727 adjustheap (periodics, periodiccnt, active);
1884 } 2728 }
1885 } 2729 }
1886 2730
1887 ev_stop (EV_A_ (W)w); 2731 ev_stop (EV_A_ (W)w);
2732
2733 EV_FREQUENT_CHECK;
1888} 2734}
1889 2735
1890void noinline 2736void noinline
1891ev_periodic_again (EV_P_ ev_periodic *w) 2737ev_periodic_again (EV_P_ ev_periodic *w)
1892{ 2738{
… …
1898 2744
1899#ifndef SA_RESTART 2745#ifndef SA_RESTART
1900# define SA_RESTART 0 2746# define SA_RESTART 0
1901#endif 2747#endif
1902 2748
2749#if EV_SIGNAL_ENABLE
2750
1903void noinline 2751void noinline
1904ev_signal_start (EV_P_ ev_signal *w) 2752ev_signal_start (EV_P_ ev_signal *w)
1905{ 2753{
1906#if EV_MULTIPLICITY
1907 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1908#endif
1909 if (expect_false (ev_is_active (w))) 2754 if (expect_false (ev_is_active (w)))
1910 return; 2755 return;
1911 2756
1912 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1913 2758
1914 evpipe_init (EV_A); 2759#if EV_MULTIPLICITY
2760 assert (("libev: a signal must not be attached to two different loops",
2761 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1915 2762
2763 signals [w->signum - 1].loop = EV_A;
2764#endif
2765
2766 EV_FREQUENT_CHECK;
2767
2768#if EV_USE_SIGNALFD
2769 if (sigfd == -2)
1916 { 2770 {
1917#ifndef _WIN32 2771 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1918 sigset_t full, prev; 2772 if (sigfd < 0 && errno == EINVAL)
1919 sigfillset (&full); 2773 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1920 sigprocmask (SIG_SETMASK, &full, &prev);
1921#endif
1922 2774
1923 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2775 if (sigfd >= 0)
2776 {
2777 fd_intern (sigfd); /* doing it twice will not hurt */
1924 2778
1925#ifndef _WIN32 2779 sigemptyset (&sigfd_set);
1926 sigprocmask (SIG_SETMASK, &prev, 0); 2780
1927#endif 2781 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2782 ev_set_priority (&sigfd_w, EV_MAXPRI);
2783 ev_io_start (EV_A_ &sigfd_w);
2784 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2785 }
1928 } 2786 }
2787
2788 if (sigfd >= 0)
2789 {
2790 /* TODO: check .head */
2791 sigaddset (&sigfd_set, w->signum);
2792 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2793
2794 signalfd (sigfd, &sigfd_set, 0);
2795 }
2796#endif
1929 2797
1930 ev_start (EV_A_ (W)w, 1); 2798 ev_start (EV_A_ (W)w, 1);
1931 wlist_add (&signals [w->signum - 1].head, (WL)w); 2799 wlist_add (&signals [w->signum - 1].head, (WL)w);
1932 2800
1933 if (!((WL)w)->next) 2801 if (!((WL)w)->next)
2802# if EV_USE_SIGNALFD
2803 if (sigfd < 0) /*TODO*/
2804# endif
1934 { 2805 {
1935#if _WIN32 2806# ifdef _WIN32
2807 evpipe_init (EV_A);
2808
1936 signal (w->signum, sighandler); 2809 signal (w->signum, ev_sighandler);
1937#else 2810# else
1938 struct sigaction sa; 2811 struct sigaction sa;
2812
2813 evpipe_init (EV_A);
2814
1939 sa.sa_handler = sighandler; 2815 sa.sa_handler = ev_sighandler;
1940 sigfillset (&sa.sa_mask); 2816 sigfillset (&sa.sa_mask);
1941 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1942 sigaction (w->signum, &sa, 0); 2818 sigaction (w->signum, &sa, 0);
2819
2820 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1943#endif 2823#endif
1944 } 2824 }
2825
2826 EV_FREQUENT_CHECK;
1945} 2827}
1946 2828
1947void noinline 2829void noinline
1948ev_signal_stop (EV_P_ ev_signal *w) 2830ev_signal_stop (EV_P_ ev_signal *w)
1949{ 2831{
1950 clear_pending (EV_A_ (W)w); 2832 clear_pending (EV_A_ (W)w);
1951 if (expect_false (!ev_is_active (w))) 2833 if (expect_false (!ev_is_active (w)))
1952 return; 2834 return;
1953 2835
2836 EV_FREQUENT_CHECK;
2837
1954 wlist_del (&signals [w->signum - 1].head, (WL)w); 2838 wlist_del (&signals [w->signum - 1].head, (WL)w);
1955 ev_stop (EV_A_ (W)w); 2839 ev_stop (EV_A_ (W)w);
1956 2840
1957 if (!signals [w->signum - 1].head) 2841 if (!signals [w->signum - 1].head)
2842 {
2843#if EV_MULTIPLICITY
2844 signals [w->signum - 1].loop = 0; /* unattach from signal */
2845#endif
2846#if EV_USE_SIGNALFD
2847 if (sigfd >= 0)
2848 {
2849 sigset_t ss;
2850
2851 sigemptyset (&ss);
2852 sigaddset (&ss, w->signum);
2853 sigdelset (&sigfd_set, w->signum);
2854
2855 signalfd (sigfd, &sigfd_set, 0);
2856 sigprocmask (SIG_UNBLOCK, &ss, 0);
2857 }
2858 else
2859#endif
1958 signal (w->signum, SIG_DFL); 2860 signal (w->signum, SIG_DFL);
2861 }
2862
2863 EV_FREQUENT_CHECK;
1959} 2864}
2865
2866#endif
2867
2868#if EV_CHILD_ENABLE
1960 2869
1961void 2870void
1962ev_child_start (EV_P_ ev_child *w) 2871ev_child_start (EV_P_ ev_child *w)
1963{ 2872{
1964#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
1965 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1966#endif 2875#endif
1967 if (expect_false (ev_is_active (w))) 2876 if (expect_false (ev_is_active (w)))
1968 return; 2877 return;
1969 2878
2879 EV_FREQUENT_CHECK;
2880
1970 ev_start (EV_A_ (W)w, 1); 2881 ev_start (EV_A_ (W)w, 1);
1971 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2882 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2883
2884 EV_FREQUENT_CHECK;
1972} 2885}
1973 2886
1974void 2887void
1975ev_child_stop (EV_P_ ev_child *w) 2888ev_child_stop (EV_P_ ev_child *w)
1976{ 2889{
1977 clear_pending (EV_A_ (W)w); 2890 clear_pending (EV_A_ (W)w);
1978 if (expect_false (!ev_is_active (w))) 2891 if (expect_false (!ev_is_active (w)))
1979 return; 2892 return;
1980 2893
2894 EV_FREQUENT_CHECK;
2895
1981 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2896 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1982 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2898
2899 EV_FREQUENT_CHECK;
1983} 2900}
2901
2902#endif
1984 2903
1985#if EV_STAT_ENABLE 2904#if EV_STAT_ENABLE
1986 2905
1987# ifdef _WIN32 2906# ifdef _WIN32
1988# undef lstat 2907# undef lstat
1989# define lstat(a,b) _stati64 (a,b) 2908# define lstat(a,b) _stati64 (a,b)
1990# endif 2909# endif
1991 2910
1992#define DEF_STAT_INTERVAL 5.0074891 2911#define DEF_STAT_INTERVAL 5.0074891
2912#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1993#define MIN_STAT_INTERVAL 0.1074891 2913#define MIN_STAT_INTERVAL 0.1074891
1994 2914
1995static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2915static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1996 2916
1997#if EV_USE_INOTIFY 2917#if EV_USE_INOTIFY
1998# define EV_INOTIFY_BUFSIZE 8192 2918
2919/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2920# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1999 2921
2000static void noinline 2922static void noinline
2001infy_add (EV_P_ ev_stat *w) 2923infy_add (EV_P_ ev_stat *w)
2002{ 2924{
2003 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2925 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2004 2926
2005 if (w->wd < 0) 2927 if (w->wd >= 0)
2928 {
2929 struct statfs sfs;
2930
2931 /* now local changes will be tracked by inotify, but remote changes won't */
2932 /* unless the filesystem is known to be local, we therefore still poll */
2933 /* also do poll on <2.6.25, but with normal frequency */
2934
2935 if (!fs_2625)
2936 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2937 else if (!statfs (w->path, &sfs)
2938 && (sfs.f_type == 0x1373 /* devfs */
2939 || sfs.f_type == 0xEF53 /* ext2/3 */
2940 || sfs.f_type == 0x3153464a /* jfs */
2941 || sfs.f_type == 0x52654973 /* reiser3 */
2942 || sfs.f_type == 0x01021994 /* tempfs */
2943 || sfs.f_type == 0x58465342 /* xfs */))
2944 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2945 else
2946 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2006 { 2947 }
2007 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2948 else
2949 {
2950 /* can't use inotify, continue to stat */
2951 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2008 2952
2009 /* monitor some parent directory for speedup hints */ 2953 /* if path is not there, monitor some parent directory for speedup hints */
2954 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2955 /* but an efficiency issue only */
2010 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2956 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2011 { 2957 {
2012 char path [4096]; 2958 char path [4096];
2013 strcpy (path, w->path); 2959 strcpy (path, w->path);
2014 2960
… …
2017 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2963 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2018 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2964 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2019 2965
2020 char *pend = strrchr (path, '/'); 2966 char *pend = strrchr (path, '/');
2021 2967
2022 if (!pend) 2968 if (!pend || pend == path)
2023 break; /* whoops, no '/', complain to your admin */ 2969 break;
2024 2970
2025 *pend = 0; 2971 *pend = 0;
2026 w->wd = inotify_add_watch (fs_fd, path, mask); 2972 w->wd = inotify_add_watch (fs_fd, path, mask);
2027 } 2973 }
2028 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2029 } 2975 }
2030 } 2976 }
2031 else
2032 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2033 2977
2034 if (w->wd >= 0) 2978 if (w->wd >= 0)
2035 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2980
2981 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2036} 2985}
2037 2986
2038static void noinline 2987static void noinline
2039infy_del (EV_P_ ev_stat *w) 2988infy_del (EV_P_ ev_stat *w)
2040{ 2989{
… …
2054 3003
2055static void noinline 3004static void noinline
2056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2057{ 3006{
2058 if (slot < 0) 3007 if (slot < 0)
2059 /* overflow, need to check for all hahs slots */ 3008 /* overflow, need to check for all hash slots */
2060 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2061 infy_wd (EV_A_ slot, wd, ev); 3010 infy_wd (EV_A_ slot, wd, ev);
2062 else 3011 else
2063 { 3012 {
2064 WL w_; 3013 WL w_;
… …
2070 3019
2071 if (w->wd == wd || wd == -1) 3020 if (w->wd == wd || wd == -1)
2072 { 3021 {
2073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2074 { 3023 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2075 w->wd = -1; 3025 w->wd = -1;
2076 infy_add (EV_A_ w); /* re-add, no matter what */ 3026 infy_add (EV_A_ w); /* re-add, no matter what */
2077 } 3027 }
2078 3028
2079 stat_timer_cb (EV_A_ &w->timer, 0); 3029 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2084 3034
2085static void 3035static void
2086infy_cb (EV_P_ ev_io *w, int revents) 3036infy_cb (EV_P_ ev_io *w, int revents)
2087{ 3037{
2088 char buf [EV_INOTIFY_BUFSIZE]; 3038 char buf [EV_INOTIFY_BUFSIZE];
2089 struct inotify_event *ev = (struct inotify_event *)buf;
2090 int ofs; 3039 int ofs;
2091 int len = read (fs_fd, buf, sizeof (buf)); 3040 int len = read (fs_fd, buf, sizeof (buf));
2092 3041
2093 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3042 for (ofs = 0; ofs < len; )
3043 {
3044 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2094 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3045 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len;
3047 }
2095} 3048}
2096 3049
2097void inline_size 3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
3080}
3081
3082inline_size void
3083ev_check_2625 (EV_P)
3084{
3085 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */
3088 if (ev_linux_version () < 0x020619)
3089 return;
3090
3091 fs_2625 = 1;
3092}
3093
3094inline_size int
3095infy_newfd (void)
3096{
3097#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3098 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3099 if (fd >= 0)
3100 return fd;
3101#endif
3102 return inotify_init ();
3103}
3104
3105inline_size void
2098infy_init (EV_P) 3106infy_init (EV_P)
2099{ 3107{
2100 if (fs_fd != -2) 3108 if (fs_fd != -2)
2101 return; 3109 return;
2102 3110
3111 fs_fd = -1;
3112
3113 ev_check_2625 (EV_A);
3114
2103 fs_fd = inotify_init (); 3115 fs_fd = infy_newfd ();
2104 3116
2105 if (fs_fd >= 0) 3117 if (fs_fd >= 0)
2106 { 3118 {
3119 fd_intern (fs_fd);
2107 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3120 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2108 ev_set_priority (&fs_w, EV_MAXPRI); 3121 ev_set_priority (&fs_w, EV_MAXPRI);
2109 ev_io_start (EV_A_ &fs_w); 3122 ev_io_start (EV_A_ &fs_w);
3123 ev_unref (EV_A);
2110 } 3124 }
2111} 3125}
2112 3126
2113void inline_size 3127inline_size void
2114infy_fork (EV_P) 3128infy_fork (EV_P)
2115{ 3129{
2116 int slot; 3130 int slot;
2117 3131
2118 if (fs_fd < 0) 3132 if (fs_fd < 0)
2119 return; 3133 return;
2120 3134
3135 ev_ref (EV_A);
3136 ev_io_stop (EV_A_ &fs_w);
2121 close (fs_fd); 3137 close (fs_fd);
2122 fs_fd = inotify_init (); 3138 fs_fd = infy_newfd ();
3139
3140 if (fs_fd >= 0)
3141 {
3142 fd_intern (fs_fd);
3143 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A);
3146 }
2123 3147
2124 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2125 { 3149 {
2126 WL w_ = fs_hash [slot].head; 3150 WL w_ = fs_hash [slot].head;
2127 fs_hash [slot].head = 0; 3151 fs_hash [slot].head = 0;
… …
2134 w->wd = -1; 3158 w->wd = -1;
2135 3159
2136 if (fs_fd >= 0) 3160 if (fs_fd >= 0)
2137 infy_add (EV_A_ w); /* re-add, no matter what */ 3161 infy_add (EV_A_ w); /* re-add, no matter what */
2138 else 3162 else
3163 {
3164 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3165 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2139 ev_timer_start (EV_A_ &w->timer); 3166 ev_timer_again (EV_A_ &w->timer);
3167 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3168 }
2140 } 3169 }
2141
2142 } 3170 }
2143} 3171}
2144 3172
3173#endif
3174
3175#ifdef _WIN32
3176# define EV_LSTAT(p,b) _stati64 (p, b)
3177#else
3178# define EV_LSTAT(p,b) lstat (p, b)
2145#endif 3179#endif
2146 3180
2147void 3181void
2148ev_stat_stat (EV_P_ ev_stat *w) 3182ev_stat_stat (EV_P_ ev_stat *w)
2149{ 3183{
… …
2156static void noinline 3190static void noinline
2157stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3191stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2158{ 3192{
2159 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3193 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2160 3194
2161 /* we copy this here each the time so that */ 3195 ev_statdata prev = w->attr;
2162 /* prev has the old value when the callback gets invoked */
2163 w->prev = w->attr;
2164 ev_stat_stat (EV_A_ w); 3196 ev_stat_stat (EV_A_ w);
2165 3197
2166 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3198 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2167 if ( 3199 if (
2168 w->prev.st_dev != w->attr.st_dev 3200 prev.st_dev != w->attr.st_dev
2169 || w->prev.st_ino != w->attr.st_ino 3201 || prev.st_ino != w->attr.st_ino
2170 || w->prev.st_mode != w->attr.st_mode 3202 || prev.st_mode != w->attr.st_mode
2171 || w->prev.st_nlink != w->attr.st_nlink 3203 || prev.st_nlink != w->attr.st_nlink
2172 || w->prev.st_uid != w->attr.st_uid 3204 || prev.st_uid != w->attr.st_uid
2173 || w->prev.st_gid != w->attr.st_gid 3205 || prev.st_gid != w->attr.st_gid
2174 || w->prev.st_rdev != w->attr.st_rdev 3206 || prev.st_rdev != w->attr.st_rdev
2175 || w->prev.st_size != w->attr.st_size 3207 || prev.st_size != w->attr.st_size
2176 || w->prev.st_atime != w->attr.st_atime 3208 || prev.st_atime != w->attr.st_atime
2177 || w->prev.st_mtime != w->attr.st_mtime 3209 || prev.st_mtime != w->attr.st_mtime
2178 || w->prev.st_ctime != w->attr.st_ctime 3210 || prev.st_ctime != w->attr.st_ctime
2179 ) { 3211 ) {
3212 /* we only update w->prev on actual differences */
3213 /* in case we test more often than invoke the callback, */
3214 /* to ensure that prev is always different to attr */
3215 w->prev = prev;
3216
2180 #if EV_USE_INOTIFY 3217 #if EV_USE_INOTIFY
3218 if (fs_fd >= 0)
3219 {
2181 infy_del (EV_A_ w); 3220 infy_del (EV_A_ w);
2182 infy_add (EV_A_ w); 3221 infy_add (EV_A_ w);
2183 ev_stat_stat (EV_A_ w); /* avoid race... */ 3222 ev_stat_stat (EV_A_ w); /* avoid race... */
3223 }
2184 #endif 3224 #endif
2185 3225
2186 ev_feed_event (EV_A_ w, EV_STAT); 3226 ev_feed_event (EV_A_ w, EV_STAT);
2187 } 3227 }
2188} 3228}
… …
2191ev_stat_start (EV_P_ ev_stat *w) 3231ev_stat_start (EV_P_ ev_stat *w)
2192{ 3232{
2193 if (expect_false (ev_is_active (w))) 3233 if (expect_false (ev_is_active (w)))
2194 return; 3234 return;
2195 3235
2196 /* since we use memcmp, we need to clear any padding data etc. */
2197 memset (&w->prev, 0, sizeof (ev_statdata));
2198 memset (&w->attr, 0, sizeof (ev_statdata));
2199
2200 ev_stat_stat (EV_A_ w); 3236 ev_stat_stat (EV_A_ w);
2201 3237
3238 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2202 if (w->interval < MIN_STAT_INTERVAL) 3239 w->interval = MIN_STAT_INTERVAL;
2203 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2204 3240
2205 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3241 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2206 ev_set_priority (&w->timer, ev_priority (w)); 3242 ev_set_priority (&w->timer, ev_priority (w));
2207 3243
2208#if EV_USE_INOTIFY 3244#if EV_USE_INOTIFY
2209 infy_init (EV_A); 3245 infy_init (EV_A);
2210 3246
2211 if (fs_fd >= 0) 3247 if (fs_fd >= 0)
2212 infy_add (EV_A_ w); 3248 infy_add (EV_A_ w);
2213 else 3249 else
2214#endif 3250#endif
3251 {
2215 ev_timer_start (EV_A_ &w->timer); 3252 ev_timer_again (EV_A_ &w->timer);
3253 ev_unref (EV_A);
3254 }
2216 3255
2217 ev_start (EV_A_ (W)w, 1); 3256 ev_start (EV_A_ (W)w, 1);
3257
3258 EV_FREQUENT_CHECK;
2218} 3259}
2219 3260
2220void 3261void
2221ev_stat_stop (EV_P_ ev_stat *w) 3262ev_stat_stop (EV_P_ ev_stat *w)
2222{ 3263{
2223 clear_pending (EV_A_ (W)w); 3264 clear_pending (EV_A_ (W)w);
2224 if (expect_false (!ev_is_active (w))) 3265 if (expect_false (!ev_is_active (w)))
2225 return; 3266 return;
2226 3267
3268 EV_FREQUENT_CHECK;
3269
2227#if EV_USE_INOTIFY 3270#if EV_USE_INOTIFY
2228 infy_del (EV_A_ w); 3271 infy_del (EV_A_ w);
2229#endif 3272#endif
3273
3274 if (ev_is_active (&w->timer))
3275 {
3276 ev_ref (EV_A);
2230 ev_timer_stop (EV_A_ &w->timer); 3277 ev_timer_stop (EV_A_ &w->timer);
3278 }
2231 3279
2232 ev_stop (EV_A_ (W)w); 3280 ev_stop (EV_A_ (W)w);
3281
3282 EV_FREQUENT_CHECK;
2233} 3283}
2234#endif 3284#endif
2235 3285
2236#if EV_IDLE_ENABLE 3286#if EV_IDLE_ENABLE
2237void 3287void
… …
2239{ 3289{
2240 if (expect_false (ev_is_active (w))) 3290 if (expect_false (ev_is_active (w)))
2241 return; 3291 return;
2242 3292
2243 pri_adjust (EV_A_ (W)w); 3293 pri_adjust (EV_A_ (W)w);
3294
3295 EV_FREQUENT_CHECK;
2244 3296
2245 { 3297 {
2246 int active = ++idlecnt [ABSPRI (w)]; 3298 int active = ++idlecnt [ABSPRI (w)];
2247 3299
2248 ++idleall; 3300 ++idleall;
2249 ev_start (EV_A_ (W)w, active); 3301 ev_start (EV_A_ (W)w, active);
2250 3302
2251 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3303 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2252 idles [ABSPRI (w)][active - 1] = w; 3304 idles [ABSPRI (w)][active - 1] = w;
2253 } 3305 }
3306
3307 EV_FREQUENT_CHECK;
2254} 3308}
2255 3309
2256void 3310void
2257ev_idle_stop (EV_P_ ev_idle *w) 3311ev_idle_stop (EV_P_ ev_idle *w)
2258{ 3312{
2259 clear_pending (EV_A_ (W)w); 3313 clear_pending (EV_A_ (W)w);
2260 if (expect_false (!ev_is_active (w))) 3314 if (expect_false (!ev_is_active (w)))
2261 return; 3315 return;
2262 3316
3317 EV_FREQUENT_CHECK;
3318
2263 { 3319 {
2264 int active = ((W)w)->active; 3320 int active = ev_active (w);
2265 3321
2266 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3322 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2267 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3323 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2268 3324
2269 ev_stop (EV_A_ (W)w); 3325 ev_stop (EV_A_ (W)w);
2270 --idleall; 3326 --idleall;
2271 } 3327 }
2272}
2273#endif
2274 3328
3329 EV_FREQUENT_CHECK;
3330}
3331#endif
3332
3333#if EV_PREPARE_ENABLE
2275void 3334void
2276ev_prepare_start (EV_P_ ev_prepare *w) 3335ev_prepare_start (EV_P_ ev_prepare *w)
2277{ 3336{
2278 if (expect_false (ev_is_active (w))) 3337 if (expect_false (ev_is_active (w)))
2279 return; 3338 return;
3339
3340 EV_FREQUENT_CHECK;
2280 3341
2281 ev_start (EV_A_ (W)w, ++preparecnt); 3342 ev_start (EV_A_ (W)w, ++preparecnt);
2282 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3343 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2283 prepares [preparecnt - 1] = w; 3344 prepares [preparecnt - 1] = w;
3345
3346 EV_FREQUENT_CHECK;
2284} 3347}
2285 3348
2286void 3349void
2287ev_prepare_stop (EV_P_ ev_prepare *w) 3350ev_prepare_stop (EV_P_ ev_prepare *w)
2288{ 3351{
2289 clear_pending (EV_A_ (W)w); 3352 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w))) 3353 if (expect_false (!ev_is_active (w)))
2291 return; 3354 return;
2292 3355
3356 EV_FREQUENT_CHECK;
3357
2293 { 3358 {
2294 int active = ((W)w)->active; 3359 int active = ev_active (w);
3360
2295 prepares [active - 1] = prepares [--preparecnt]; 3361 prepares [active - 1] = prepares [--preparecnt];
2296 ((W)prepares [active - 1])->active = active; 3362 ev_active (prepares [active - 1]) = active;
2297 } 3363 }
2298 3364
2299 ev_stop (EV_A_ (W)w); 3365 ev_stop (EV_A_ (W)w);
2300}
2301 3366
3367 EV_FREQUENT_CHECK;
3368}
3369#endif
3370
3371#if EV_CHECK_ENABLE
2302void 3372void
2303ev_check_start (EV_P_ ev_check *w) 3373ev_check_start (EV_P_ ev_check *w)
2304{ 3374{
2305 if (expect_false (ev_is_active (w))) 3375 if (expect_false (ev_is_active (w)))
2306 return; 3376 return;
3377
3378 EV_FREQUENT_CHECK;
2307 3379
2308 ev_start (EV_A_ (W)w, ++checkcnt); 3380 ev_start (EV_A_ (W)w, ++checkcnt);
2309 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3381 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2310 checks [checkcnt - 1] = w; 3382 checks [checkcnt - 1] = w;
3383
3384 EV_FREQUENT_CHECK;
2311} 3385}
2312 3386
2313void 3387void
2314ev_check_stop (EV_P_ ev_check *w) 3388ev_check_stop (EV_P_ ev_check *w)
2315{ 3389{
2316 clear_pending (EV_A_ (W)w); 3390 clear_pending (EV_A_ (W)w);
2317 if (expect_false (!ev_is_active (w))) 3391 if (expect_false (!ev_is_active (w)))
2318 return; 3392 return;
2319 3393
3394 EV_FREQUENT_CHECK;
3395
2320 { 3396 {
2321 int active = ((W)w)->active; 3397 int active = ev_active (w);
3398
2322 checks [active - 1] = checks [--checkcnt]; 3399 checks [active - 1] = checks [--checkcnt];
2323 ((W)checks [active - 1])->active = active; 3400 ev_active (checks [active - 1]) = active;
2324 } 3401 }
2325 3402
2326 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
3404
3405 EV_FREQUENT_CHECK;
2327} 3406}
3407#endif
2328 3408
2329#if EV_EMBED_ENABLE 3409#if EV_EMBED_ENABLE
2330void noinline 3410void noinline
2331ev_embed_sweep (EV_P_ ev_embed *w) 3411ev_embed_sweep (EV_P_ ev_embed *w)
2332{ 3412{
… …
2348embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2349{ 3429{
2350 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3430 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2351 3431
2352 { 3432 {
2353 struct ev_loop *loop = w->other; 3433 EV_P = w->other;
2354 3434
2355 while (fdchangecnt) 3435 while (fdchangecnt)
2356 { 3436 {
2357 fd_reify (EV_A); 3437 fd_reify (EV_A);
2358 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3438 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2359 } 3439 }
2360 } 3440 }
2361} 3441}
2362 3442
3443static void
3444embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3445{
3446 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3447
3448 ev_embed_stop (EV_A_ w);
3449
3450 {
3451 EV_P = w->other;
3452
3453 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3455 }
3456
3457 ev_embed_start (EV_A_ w);
3458}
3459
2363#if 0 3460#if 0
2364static void 3461static void
2365embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3462embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2366{ 3463{
2367 ev_idle_stop (EV_A_ idle); 3464 ev_idle_stop (EV_A_ idle);
… …
2373{ 3470{
2374 if (expect_false (ev_is_active (w))) 3471 if (expect_false (ev_is_active (w)))
2375 return; 3472 return;
2376 3473
2377 { 3474 {
2378 struct ev_loop *loop = w->other; 3475 EV_P = w->other;
2379 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3476 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2380 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3477 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2381 } 3478 }
3479
3480 EV_FREQUENT_CHECK;
2382 3481
2383 ev_set_priority (&w->io, ev_priority (w)); 3482 ev_set_priority (&w->io, ev_priority (w));
2384 ev_io_start (EV_A_ &w->io); 3483 ev_io_start (EV_A_ &w->io);
2385 3484
2386 ev_prepare_init (&w->prepare, embed_prepare_cb); 3485 ev_prepare_init (&w->prepare, embed_prepare_cb);
2387 ev_set_priority (&w->prepare, EV_MINPRI); 3486 ev_set_priority (&w->prepare, EV_MINPRI);
2388 ev_prepare_start (EV_A_ &w->prepare); 3487 ev_prepare_start (EV_A_ &w->prepare);
2389 3488
3489 ev_fork_init (&w->fork, embed_fork_cb);
3490 ev_fork_start (EV_A_ &w->fork);
3491
2390 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3492 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2391 3493
2392 ev_start (EV_A_ (W)w, 1); 3494 ev_start (EV_A_ (W)w, 1);
3495
3496 EV_FREQUENT_CHECK;
2393} 3497}
2394 3498
2395void 3499void
2396ev_embed_stop (EV_P_ ev_embed *w) 3500ev_embed_stop (EV_P_ ev_embed *w)
2397{ 3501{
2398 clear_pending (EV_A_ (W)w); 3502 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w))) 3503 if (expect_false (!ev_is_active (w)))
2400 return; 3504 return;
2401 3505
3506 EV_FREQUENT_CHECK;
3507
2402 ev_io_stop (EV_A_ &w->io); 3508 ev_io_stop (EV_A_ &w->io);
2403 ev_prepare_stop (EV_A_ &w->prepare); 3509 ev_prepare_stop (EV_A_ &w->prepare);
3510 ev_fork_stop (EV_A_ &w->fork);
2404 3511
2405 ev_stop (EV_A_ (W)w); 3512 ev_stop (EV_A_ (W)w);
3513
3514 EV_FREQUENT_CHECK;
2406} 3515}
2407#endif 3516#endif
2408 3517
2409#if EV_FORK_ENABLE 3518#if EV_FORK_ENABLE
2410void 3519void
2411ev_fork_start (EV_P_ ev_fork *w) 3520ev_fork_start (EV_P_ ev_fork *w)
2412{ 3521{
2413 if (expect_false (ev_is_active (w))) 3522 if (expect_false (ev_is_active (w)))
2414 return; 3523 return;
3524
3525 EV_FREQUENT_CHECK;
2415 3526
2416 ev_start (EV_A_ (W)w, ++forkcnt); 3527 ev_start (EV_A_ (W)w, ++forkcnt);
2417 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3528 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2418 forks [forkcnt - 1] = w; 3529 forks [forkcnt - 1] = w;
3530
3531 EV_FREQUENT_CHECK;
2419} 3532}
2420 3533
2421void 3534void
2422ev_fork_stop (EV_P_ ev_fork *w) 3535ev_fork_stop (EV_P_ ev_fork *w)
2423{ 3536{
2424 clear_pending (EV_A_ (W)w); 3537 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 3538 if (expect_false (!ev_is_active (w)))
2426 return; 3539 return;
2427 3540
3541 EV_FREQUENT_CHECK;
3542
2428 { 3543 {
2429 int active = ((W)w)->active; 3544 int active = ev_active (w);
3545
2430 forks [active - 1] = forks [--forkcnt]; 3546 forks [active - 1] = forks [--forkcnt];
2431 ((W)forks [active - 1])->active = active; 3547 ev_active (forks [active - 1]) = active;
2432 } 3548 }
2433 3549
2434 ev_stop (EV_A_ (W)w); 3550 ev_stop (EV_A_ (W)w);
3551
3552 EV_FREQUENT_CHECK;
2435} 3553}
2436#endif 3554#endif
2437 3555
2438#if EV_ASYNC_ENABLE 3556#if EV_ASYNC_ENABLE
2439void 3557void
… …
2441{ 3559{
2442 if (expect_false (ev_is_active (w))) 3560 if (expect_false (ev_is_active (w)))
2443 return; 3561 return;
2444 3562
2445 evpipe_init (EV_A); 3563 evpipe_init (EV_A);
3564
3565 EV_FREQUENT_CHECK;
2446 3566
2447 ev_start (EV_A_ (W)w, ++asynccnt); 3567 ev_start (EV_A_ (W)w, ++asynccnt);
2448 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3568 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2449 asyncs [asynccnt - 1] = w; 3569 asyncs [asynccnt - 1] = w;
3570
3571 EV_FREQUENT_CHECK;
2450} 3572}
2451 3573
2452void 3574void
2453ev_async_stop (EV_P_ ev_async *w) 3575ev_async_stop (EV_P_ ev_async *w)
2454{ 3576{
2455 clear_pending (EV_A_ (W)w); 3577 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3578 if (expect_false (!ev_is_active (w)))
2457 return; 3579 return;
2458 3580
3581 EV_FREQUENT_CHECK;
3582
2459 { 3583 {
2460 int active = ((W)w)->active; 3584 int active = ev_active (w);
3585
2461 asyncs [active - 1] = asyncs [--asynccnt]; 3586 asyncs [active - 1] = asyncs [--asynccnt];
2462 ((W)asyncs [active - 1])->active = active; 3587 ev_active (asyncs [active - 1]) = active;
2463 } 3588 }
2464 3589
2465 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
3591
3592 EV_FREQUENT_CHECK;
2466} 3593}
2467 3594
2468void 3595void
2469ev_async_send (EV_P_ ev_async *w) 3596ev_async_send (EV_P_ ev_async *w)
2470{ 3597{
2471 w->sent = 1; 3598 w->sent = 1;
2472 evpipe_write (EV_A_ 0, 1); 3599 evpipe_write (EV_A_ &async_pending);
2473} 3600}
2474#endif 3601#endif
2475 3602
2476/*****************************************************************************/ 3603/*****************************************************************************/
2477 3604
… …
2487once_cb (EV_P_ struct ev_once *once, int revents) 3614once_cb (EV_P_ struct ev_once *once, int revents)
2488{ 3615{
2489 void (*cb)(int revents, void *arg) = once->cb; 3616 void (*cb)(int revents, void *arg) = once->cb;
2490 void *arg = once->arg; 3617 void *arg = once->arg;
2491 3618
2492 ev_io_stop (EV_A_ &once->io); 3619 ev_io_stop (EV_A_ &once->io);
2493 ev_timer_stop (EV_A_ &once->to); 3620 ev_timer_stop (EV_A_ &once->to);
2494 ev_free (once); 3621 ev_free (once);
2495 3622
2496 cb (revents, arg); 3623 cb (revents, arg);
2497} 3624}
2498 3625
2499static void 3626static void
2500once_cb_io (EV_P_ ev_io *w, int revents) 3627once_cb_io (EV_P_ ev_io *w, int revents)
2501{ 3628{
2502 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3629 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3630
3631 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2503} 3632}
2504 3633
2505static void 3634static void
2506once_cb_to (EV_P_ ev_timer *w, int revents) 3635once_cb_to (EV_P_ ev_timer *w, int revents)
2507{ 3636{
2508 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3637 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3638
3639 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2509} 3640}
2510 3641
2511void 3642void
2512ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3643ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2513{ 3644{
… …
2535 ev_timer_set (&once->to, timeout, 0.); 3666 ev_timer_set (&once->to, timeout, 0.);
2536 ev_timer_start (EV_A_ &once->to); 3667 ev_timer_start (EV_A_ &once->to);
2537 } 3668 }
2538} 3669}
2539 3670
3671/*****************************************************************************/
3672
3673#if EV_WALK_ENABLE
3674void
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3676{
3677 int i, j;
3678 ev_watcher_list *wl, *wn;
3679
3680 if (types & (EV_IO | EV_EMBED))
3681 for (i = 0; i < anfdmax; ++i)
3682 for (wl = anfds [i].head; wl; )
3683 {
3684 wn = wl->next;
3685
3686#if EV_EMBED_ENABLE
3687 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3688 {
3689 if (types & EV_EMBED)
3690 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3691 }
3692 else
3693#endif
3694#if EV_USE_INOTIFY
3695 if (ev_cb ((ev_io *)wl) == infy_cb)
3696 ;
3697 else
3698#endif
3699 if ((ev_io *)wl != &pipe_w)
3700 if (types & EV_IO)
3701 cb (EV_A_ EV_IO, wl);
3702
3703 wl = wn;
3704 }
3705
3706 if (types & (EV_TIMER | EV_STAT))
3707 for (i = timercnt + HEAP0; i-- > HEAP0; )
3708#if EV_STAT_ENABLE
3709 /*TODO: timer is not always active*/
3710 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3711 {
3712 if (types & EV_STAT)
3713 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3714 }
3715 else
3716#endif
3717 if (types & EV_TIMER)
3718 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3719
3720#if EV_PERIODIC_ENABLE
3721 if (types & EV_PERIODIC)
3722 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif
3725
3726#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; )
3729 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif
3732
3733#if EV_FORK_ENABLE
3734 if (types & EV_FORK)
3735 for (i = forkcnt; i--; )
3736 if (ev_cb (forks [i]) != embed_fork_cb)
3737 cb (EV_A_ EV_FORK, forks [i]);
3738#endif
3739
3740#if EV_ASYNC_ENABLE
3741 if (types & EV_ASYNC)
3742 for (i = asynccnt; i--; )
3743 cb (EV_A_ EV_ASYNC, asyncs [i]);
3744#endif
3745
3746#if EV_PREPARE_ENABLE
3747 if (types & EV_PREPARE)
3748 for (i = preparecnt; i--; )
3749# if EV_EMBED_ENABLE
3750 if (ev_cb (prepares [i]) != embed_prepare_cb)
3751# endif
3752 cb (EV_A_ EV_PREPARE, prepares [i]);
3753#endif
3754
3755#if EV_CHECK_ENABLE
3756 if (types & EV_CHECK)
3757 for (i = checkcnt; i--; )
3758 cb (EV_A_ EV_CHECK, checks [i]);
3759#endif
3760
3761#if EV_SIGNAL_ENABLE
3762 if (types & EV_SIGNAL)
3763 for (i = 0; i < EV_NSIG - 1; ++i)
3764 for (wl = signals [i].head; wl; )
3765 {
3766 wn = wl->next;
3767 cb (EV_A_ EV_SIGNAL, wl);
3768 wl = wn;
3769 }
3770#endif
3771
3772#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; )
3775 for (wl = childs [i]; wl; )
3776 {
3777 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn;
3780 }
3781#endif
3782/* EV_STAT 0x00001000 /* stat data changed */
3783/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3784}
3785#endif
3786
2540#if EV_MULTIPLICITY 3787#if EV_MULTIPLICITY
2541 #include "ev_wrap.h" 3788 #include "ev_wrap.h"
2542#endif 3789#endif
2543 3790
2544#ifdef __cplusplus 3791#ifdef __cplusplus

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