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Comparing libev/ev.c (file contents):
Revision 1.347 by root, Fri Oct 15 22:44:41 2010 UTC vs.
Revision 1.427 by root, Sun May 6 19:29:59 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
… …
207#define _DARWIN_UNLIMITED_SELECT 1 219#define _DARWIN_UNLIMITED_SELECT 1
208 220
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
210 222
211/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 224#if defined EV_NSIG
213/* use what's provided */ 225/* use what's provided */
214#elif defined (NSIG) 226#elif defined NSIG
215# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 228#elif defined _NSIG
217# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 230#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 232#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 236#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 238#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 242#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 244#else
233# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 246/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 247/* but consider reporting it, too! :) */
236# define EV_NSIG 65 248# define EV_NSIG 65
237#endif 249#endif
238 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
239#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 258# else
243# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
244# endif 260# endif
245#endif 261#endif
246 262
247#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 265# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 266# else
251# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
252# endif 268# endif
253#endif 269#endif
… …
343#endif 359#endif
344 360
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 364# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 365# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 367# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 368# define EV_USE_MONOTONIC 1
353# else 369# else
… …
378# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
380#endif 396#endif
381 397
382#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 401# include <sys/select.h>
385# endif 402# endif
386#endif 403#endif
387 404
388#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 406# include <sys/statfs.h>
391# include <sys/inotify.h> 407# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
411# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
412# else 428# else
413# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
414# endif 430# endif
415# endif 431# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 433#endif
424 434
425#if EV_USE_SIGNALFD 435#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 437# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 443# define SFD_CLOEXEC O_CLOEXEC
434# else 444# else
435# define SFD_CLOEXEC 02000000 445# define SFD_CLOEXEC 02000000
436# endif 446# endif
437# endif 447# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 449
443struct signalfd_siginfo 450struct signalfd_siginfo
444{ 451{
445 uint32_t ssi_signo; 452 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 453 char pad[128 - sizeof (uint32_t)];
447}; 454};
448# ifdef __cplusplus
449}
450# endif
451#endif 455#endif
452 456
453/**/ 457/**/
454 458
455#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
… …
457#else 461#else
458# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
459#endif 463#endif
460 464
461/* 465/*
462 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 468 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 471
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 474
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; tv.tv_nsec = (long)((t - tv.tv_sec) * 1e9); } while (0) 476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 519 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
480#else 526#else
481# define expect(expr,value) (expr) 527 #include <inttypes.h>
482# define noinline
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
484# define inline
485# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
486#endif 542 #endif
543#endif
487 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
490#define inline_size static inline 960#define inline_size ecb_inline
491 961
492#if EV_FEATURE_CODE 962#if EV_FEATURE_CODE
493# define inline_speed static inline 963# define inline_speed ecb_inline
494#else 964#else
495# define inline_speed static noinline 965# define inline_speed static noinline
496#endif 966#endif
497 967
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1007# include "ev_win32.c"
538#endif 1008#endif
539 1009
540/*****************************************************************************/ 1010/*****************************************************************************/
541 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
542#if EV_AVOID_STDIO 1102#if EV_AVOID_STDIO
543static void noinline 1103static void noinline ecb_cold
544ev_printerr (const char *msg) 1104ev_printerr (const char *msg)
545{ 1105{
546 write (STDERR_FILENO, msg, strlen (msg)); 1106 write (STDERR_FILENO, msg, strlen (msg));
547} 1107}
548#endif 1108#endif
549 1109
550static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
551 1111
552void 1112void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
554{ 1114{
555 syserr_cb = cb; 1115 syserr_cb = cb;
556} 1116}
557 1117
558static void noinline 1118static void noinline ecb_cold
559ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
560{ 1120{
561 if (!msg) 1121 if (!msg)
562 msg = "(libev) system error"; 1122 msg = "(libev) system error";
563 1123
564 if (syserr_cb) 1124 if (syserr_cb)
565 syserr_cb (msg); 1125 syserr_cb (msg);
566 else 1126 else
567 { 1127 {
568#if EV_AVOID_STDIO 1128#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1129 ev_printerr (msg);
572 ev_printerr (": "); 1130 ev_printerr (": ");
573 ev_printerr (err); 1131 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1132 ev_printerr ("\n");
575#else 1133#else
576 perror (msg); 1134 perror (msg);
577#endif 1135#endif
578 abort (); 1136 abort ();
… …
596 free (ptr); 1154 free (ptr);
597 return 0; 1155 return 0;
598#endif 1156#endif
599} 1157}
600 1158
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1160
603void 1161void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
605{ 1163{
606 alloc = cb; 1164 alloc = cb;
607} 1165}
608 1166
609inline_speed void * 1167inline_speed void *
… …
612 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
613 1171
614 if (!ptr && size) 1172 if (!ptr && size)
615 { 1173 {
616#if EV_AVOID_STDIO 1174#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1176#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1178#endif
621 abort (); 1179 abort ();
622 } 1180 }
623 1181
624 return ptr; 1182 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1200 unsigned char unused;
643#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1203#endif
646#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
648#endif 1209#endif
649} ANFD; 1210} ANFD;
650 1211
651/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
652typedef struct 1213typedef struct
… …
694 #undef VAR 1255 #undef VAR
695 }; 1256 };
696 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
697 1258
698 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1261
701#else 1262#else
702 1263
703 ev_tstamp ev_rt_now; 1264 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1266 #include "ev_vars.h"
706 #undef VAR 1267 #undef VAR
707 1268
708 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1281#endif
721 1282
722#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
723 1284
724/*****************************************************************************/ 1285/*****************************************************************************/
725 1286
726#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1288ev_tstamp
728ev_time (void) 1289ev_time (void) EV_THROW
729{ 1290{
730#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
732 { 1293 {
733 struct timespec ts; 1294 struct timespec ts;
… …
757 return ev_time (); 1318 return ev_time ();
758} 1319}
759 1320
760#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
761ev_tstamp 1322ev_tstamp
762ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
763{ 1324{
764 return ev_rt_now; 1325 return ev_rt_now;
765} 1326}
766#endif 1327#endif
767 1328
768void 1329void
769ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
770{ 1331{
771 if (delay > 0.) 1332 if (delay > 0.)
772 { 1333 {
773#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
774 struct timespec ts; 1335 struct timespec ts;
775 1336
776 EV_SET_TS (ts, delay); 1337 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1339#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
780#else 1341#else
781 struct timeval tv; 1342 struct timeval tv;
782 1343
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
785 /* by older ones */ 1346 /* by older ones */
786 EV_SET_TV (tv, delay); 1347 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
788#endif 1349#endif
789 } 1350 }
790} 1351}
791 1352
… …
802 1363
803 do 1364 do
804 ncur <<= 1; 1365 ncur <<= 1;
805 while (cnt > ncur); 1366 while (cnt > ncur);
806 1367
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1370 {
810 ncur *= elem; 1371 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1375 }
815 1376
816 return ncur; 1377 return ncur;
817} 1378}
818 1379
819static noinline void * 1380static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1382{
822 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
824} 1385}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1389
829#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
831 { \ 1392 { \
832 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1397 }
837 1398
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1417{
857} 1418}
858 1419
859void noinline 1420void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1422{
862 W w_ = (W)w; 1423 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
864 1425
865 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
873 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
874} 1437}
875 1438
876inline_speed void 1439inline_speed void
877feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
878{ 1441{
… …
924 if (expect_true (!anfd->reify)) 1487 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1488 fd_event_nocheck (EV_A_ fd, revents);
926} 1489}
927 1490
928void 1491void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1493{
931 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
933} 1496}
934 1497
… …
937inline_size void 1500inline_size void
938fd_reify (EV_P) 1501fd_reify (EV_P)
939{ 1502{
940 int i; 1503 int i;
941 1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
1529
942 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
943 { 1531 {
944 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
946 ev_io *w; 1534 ev_io *w;
947 1535
948 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
949 1538
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1540
953#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1542 {
956 unsigned long arg; 1543 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1544
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1546 anfd->events |= (unsigned char)w->events;
1547
1548 if (o_events != anfd->events)
1549 o_reify = EV__IOFDSET; /* actually |= */
959 } 1550 }
960#endif
961 1551
962 { 1552 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1554 }
973 1555
974 fdchangecnt = 0; 1556 fdchangecnt = 0;
975} 1557}
976 1558
… …
988 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
989 } 1571 }
990} 1572}
991 1573
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1575inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
995{ 1577{
996 ev_io *w; 1578 ev_io *w;
997 1579
998 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1584 }
1003} 1585}
1004 1586
1005/* check whether the given fd is actually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1588inline_size int ecb_cold
1007fd_valid (int fd) 1589fd_valid (int fd)
1008{ 1590{
1009#ifdef _WIN32 1591#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1593#else
1012 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
1013#endif 1595#endif
1014} 1596}
1015 1597
1016/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
1017static void noinline 1599static void noinline ecb_cold
1018fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
1019{ 1601{
1020 int fd; 1602 int fd;
1021 1603
1022 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
1026} 1608}
1027 1609
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1611static void noinline ecb_cold
1030fd_enomem (EV_P) 1612fd_enomem (EV_P)
1031{ 1613{
1032 int fd; 1614 int fd;
1033 1615
1034 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
… …
1229 1811
1230/*****************************************************************************/ 1812/*****************************************************************************/
1231 1813
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 1815
1234static void noinline 1816static void noinline ecb_cold
1235evpipe_init (EV_P) 1817evpipe_init (EV_P)
1236{ 1818{
1237 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1238 { 1820 {
1239# if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
… …
1261 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 } 1845 }
1264} 1846}
1265 1847
1266inline_size void 1848inline_speed void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{ 1850{
1269 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1270 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1271 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275 1871
1276#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1277 if (evfd >= 0) 1873 if (evfd >= 0)
1278 { 1874 {
1279 uint64_t counter = 1; 1875 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1281 } 1877 }
1282 else 1878 else
1283#endif 1879#endif
1284 /* win32 people keep sending patches that change this write() to send() */ 1880 {
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1881#ifdef _WIN32
1286 /* so when you think this write should be a send instead, please find out */ 1882 WSABUF buf;
1287 /* where your send() is from - it's definitely not the microsoft send, and */ 1883 DWORD sent;
1288 /* tell me. thank you. */ 1884 buf.buf = &buf;
1885 buf.len = 1;
1886 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1887#else
1289 write (evpipe [1], &dummy, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889#endif
1890 }
1290 1891
1291 errno = old_errno; 1892 errno = old_errno;
1292 } 1893 }
1293} 1894}
1294 1895
… …
1297static void 1898static void
1298pipecb (EV_P_ ev_io *iow, int revents) 1899pipecb (EV_P_ ev_io *iow, int revents)
1299{ 1900{
1300 int i; 1901 int i;
1301 1902
1903 if (revents & EV_READ)
1904 {
1302#if EV_USE_EVENTFD 1905#if EV_USE_EVENTFD
1303 if (evfd >= 0) 1906 if (evfd >= 0)
1304 { 1907 {
1305 uint64_t counter; 1908 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 1909 read (evfd, &counter, sizeof (uint64_t));
1307 } 1910 }
1308 else 1911 else
1309#endif 1912#endif
1310 { 1913 {
1311 char dummy; 1914 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1915#ifdef _WIN32
1916 WSABUF buf;
1917 DWORD recvd;
1918 buf.buf = dummy;
1919 buf.len = sizeof (dummy);
1920 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1921#else
1313 read (evpipe [0], &dummy, 1); 1922 read (evpipe [0], &dummy, sizeof (dummy));
1923#endif
1924 }
1314 } 1925 }
1315 1926
1927 pipe_write_skipped = 0;
1928
1929 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1930
1931#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 1932 if (sig_pending)
1317 { 1933 {
1318 sig_pending = 0; 1934 sig_pending = 0;
1935
1936 ECB_MEMORY_FENCE_RELEASE;
1319 1937
1320 for (i = EV_NSIG - 1; i--; ) 1938 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 1939 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 1940 ev_feed_signal_event (EV_A_ i + 1);
1323 } 1941 }
1942#endif
1324 1943
1325#if EV_ASYNC_ENABLE 1944#if EV_ASYNC_ENABLE
1326 if (async_pending) 1945 if (async_pending)
1327 { 1946 {
1328 async_pending = 0; 1947 async_pending = 0;
1948
1949 ECB_MEMORY_FENCE_RELEASE;
1329 1950
1330 for (i = asynccnt; i--; ) 1951 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 1952 if (asyncs [i]->sent)
1332 { 1953 {
1333 asyncs [i]->sent = 0; 1954 asyncs [i]->sent = 0;
… …
1337#endif 1958#endif
1338} 1959}
1339 1960
1340/*****************************************************************************/ 1961/*****************************************************************************/
1341 1962
1963void
1964ev_feed_signal (int signum) EV_THROW
1965{
1966#if EV_MULTIPLICITY
1967 EV_P = signals [signum - 1].loop;
1968
1969 if (!EV_A)
1970 return;
1971#endif
1972
1973 if (!ev_active (&pipe_w))
1974 return;
1975
1976 signals [signum - 1].pending = 1;
1977 evpipe_write (EV_A_ &sig_pending);
1978}
1979
1342static void 1980static void
1343ev_sighandler (int signum) 1981ev_sighandler (int signum)
1344{ 1982{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 1983#ifdef _WIN32
1350 signal (signum, ev_sighandler); 1984 signal (signum, ev_sighandler);
1351#endif 1985#endif
1352 1986
1353 signals [signum - 1].pending = 1; 1987 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 1988}
1356 1989
1357void noinline 1990void noinline
1358ev_feed_signal_event (EV_P_ int signum) 1991ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 1992{
1360 WL w; 1993 WL w;
1361 1994
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1995 if (expect_false (signum <= 0 || signum > EV_NSIG))
1363 return; 1996 return;
… …
1459 2092
1460#endif 2093#endif
1461 2094
1462/*****************************************************************************/ 2095/*****************************************************************************/
1463 2096
2097#if EV_USE_IOCP
2098# include "ev_iocp.c"
2099#endif
1464#if EV_USE_PORT 2100#if EV_USE_PORT
1465# include "ev_port.c" 2101# include "ev_port.c"
1466#endif 2102#endif
1467#if EV_USE_KQUEUE 2103#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2104# include "ev_kqueue.c"
… …
1475#endif 2111#endif
1476#if EV_USE_SELECT 2112#if EV_USE_SELECT
1477# include "ev_select.c" 2113# include "ev_select.c"
1478#endif 2114#endif
1479 2115
1480int 2116int ecb_cold
1481ev_version_major (void) 2117ev_version_major (void) EV_THROW
1482{ 2118{
1483 return EV_VERSION_MAJOR; 2119 return EV_VERSION_MAJOR;
1484} 2120}
1485 2121
1486int 2122int ecb_cold
1487ev_version_minor (void) 2123ev_version_minor (void) EV_THROW
1488{ 2124{
1489 return EV_VERSION_MINOR; 2125 return EV_VERSION_MINOR;
1490} 2126}
1491 2127
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2128/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2129int inline_size ecb_cold
1494enable_secure (void) 2130enable_secure (void)
1495{ 2131{
1496#ifdef _WIN32 2132#ifdef _WIN32
1497 return 0; 2133 return 0;
1498#else 2134#else
1499 return getuid () != geteuid () 2135 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2136 || getgid () != getegid ();
1501#endif 2137#endif
1502} 2138}
1503 2139
1504unsigned int 2140unsigned int ecb_cold
1505ev_supported_backends (void) 2141ev_supported_backends (void) EV_THROW
1506{ 2142{
1507 unsigned int flags = 0; 2143 unsigned int flags = 0;
1508 2144
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2145 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2146 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2149 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2150
1515 return flags; 2151 return flags;
1516} 2152}
1517 2153
1518unsigned int 2154unsigned int ecb_cold
1519ev_recommended_backends (void) 2155ev_recommended_backends (void) EV_THROW
1520{ 2156{
1521 unsigned int flags = ev_supported_backends (); 2157 unsigned int flags = ev_supported_backends ();
1522 2158
1523#ifndef __NetBSD__ 2159#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2160 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2171#endif
1536 2172
1537 return flags; 2173 return flags;
1538} 2174}
1539 2175
2176unsigned int ecb_cold
2177ev_embeddable_backends (void) EV_THROW
2178{
2179 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2180
2181 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2182 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2183 flags &= ~EVBACKEND_EPOLL;
2184
2185 return flags;
2186}
2187
1540unsigned int 2188unsigned int
1541ev_embeddable_backends (void)
1542{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */
1547 flags &= ~EVBACKEND_EPOLL;
1548
1549 return flags;
1550}
1551
1552unsigned int
1553ev_backend (EV_P) 2189ev_backend (EV_P) EV_THROW
1554{ 2190{
1555 return backend; 2191 return backend;
1556} 2192}
1557 2193
1558#if EV_FEATURE_API 2194#if EV_FEATURE_API
1559unsigned int 2195unsigned int
1560ev_iteration (EV_P) 2196ev_iteration (EV_P) EV_THROW
1561{ 2197{
1562 return loop_count; 2198 return loop_count;
1563} 2199}
1564 2200
1565unsigned int 2201unsigned int
1566ev_depth (EV_P) 2202ev_depth (EV_P) EV_THROW
1567{ 2203{
1568 return loop_depth; 2204 return loop_depth;
1569} 2205}
1570 2206
1571void 2207void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2208ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2209{
1574 io_blocktime = interval; 2210 io_blocktime = interval;
1575} 2211}
1576 2212
1577void 2213void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2214ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2215{
1580 timeout_blocktime = interval; 2216 timeout_blocktime = interval;
1581} 2217}
1582 2218
1583void 2219void
1584ev_set_userdata (EV_P_ void *data) 2220ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2221{
1586 userdata = data; 2222 userdata = data;
1587} 2223}
1588 2224
1589void * 2225void *
1590ev_userdata (EV_P) 2226ev_userdata (EV_P) EV_THROW
1591{ 2227{
1592 return userdata; 2228 return userdata;
1593} 2229}
1594 2230
2231void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2232ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2233{
1597 invoke_cb = invoke_pending_cb; 2234 invoke_cb = invoke_pending_cb;
1598} 2235}
1599 2236
2237void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2238ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2239{
1602 release_cb = release; 2240 release_cb = release;
1603 acquire_cb = acquire; 2241 acquire_cb = acquire;
1604} 2242}
1605#endif 2243#endif
1606 2244
1607/* initialise a loop structure, must be zero-initialised */ 2245/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2246static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2247loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2248{
1611 if (!backend) 2249 if (!backend)
1612 { 2250 {
2251 origflags = flags;
2252
1613#if EV_USE_REALTIME 2253#if EV_USE_REALTIME
1614 if (!have_realtime) 2254 if (!have_realtime)
1615 { 2255 {
1616 struct timespec ts; 2256 struct timespec ts;
1617 2257
… …
1639 if (!(flags & EVFLAG_NOENV) 2279 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2280 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2281 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2282 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2283
1644 ev_rt_now = ev_time (); 2284 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2285 mn_now = get_clock ();
1646 now_floor = mn_now; 2286 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2287 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2288#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2289 invoke_cb = ev_invoke_pending;
1650#endif 2290#endif
1651 2291
1652 io_blocktime = 0.; 2292 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2293 timeout_blocktime = 0.;
1654 backend = 0; 2294 backend = 0;
1655 backend_fd = -1; 2295 backend_fd = -1;
1656 sig_pending = 0; 2296 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2297#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2298 async_pending = 0;
1659#endif 2299#endif
2300 pipe_write_skipped = 0;
2301 pipe_write_wanted = 0;
1660#if EV_USE_INOTIFY 2302#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2303 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2304#endif
1663#if EV_USE_SIGNALFD 2305#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2306 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2307#endif
1666 2308
1667 if (!(flags & 0x0000ffffU)) 2309 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2310 flags |= ev_recommended_backends ();
1669 2311
2312#if EV_USE_IOCP
2313 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2314#endif
1670#if EV_USE_PORT 2315#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2317#endif
1673#if EV_USE_KQUEUE 2318#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2319 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2336#endif
1692 } 2337 }
1693} 2338}
1694 2339
1695/* free up a loop structure */ 2340/* free up a loop structure */
1696static void noinline 2341void ecb_cold
1697loop_destroy (EV_P) 2342ev_loop_destroy (EV_P)
1698{ 2343{
1699 int i; 2344 int i;
2345
2346#if EV_MULTIPLICITY
2347 /* mimic free (0) */
2348 if (!EV_A)
2349 return;
2350#endif
2351
2352#if EV_CLEANUP_ENABLE
2353 /* queue cleanup watchers (and execute them) */
2354 if (expect_false (cleanupcnt))
2355 {
2356 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2357 EV_INVOKE_PENDING;
2358 }
2359#endif
2360
2361#if EV_CHILD_ENABLE
2362 if (ev_is_active (&childev))
2363 {
2364 ev_ref (EV_A); /* child watcher */
2365 ev_signal_stop (EV_A_ &childev);
2366 }
2367#endif
1700 2368
1701 if (ev_is_active (&pipe_w)) 2369 if (ev_is_active (&pipe_w))
1702 { 2370 {
1703 /*ev_ref (EV_A);*/ 2371 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2372 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1726#endif 2394#endif
1727 2395
1728 if (backend_fd >= 0) 2396 if (backend_fd >= 0)
1729 close (backend_fd); 2397 close (backend_fd);
1730 2398
2399#if EV_USE_IOCP
2400 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2401#endif
1731#if EV_USE_PORT 2402#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2403 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2404#endif
1734#if EV_USE_KQUEUE 2405#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2406 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2433 array_free (periodic, EMPTY);
1763#endif 2434#endif
1764#if EV_FORK_ENABLE 2435#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2436 array_free (fork, EMPTY);
1766#endif 2437#endif
2438#if EV_CLEANUP_ENABLE
2439 array_free (cleanup, EMPTY);
2440#endif
1767 array_free (prepare, EMPTY); 2441 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2442 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2443#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2444 array_free (async, EMPTY);
1771#endif 2445#endif
1772 2446
1773 backend = 0; 2447 backend = 0;
2448
2449#if EV_MULTIPLICITY
2450 if (ev_is_default_loop (EV_A))
2451#endif
2452 ev_default_loop_ptr = 0;
2453#if EV_MULTIPLICITY
2454 else
2455 ev_free (EV_A);
2456#endif
1774} 2457}
1775 2458
1776#if EV_USE_INOTIFY 2459#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2460inline_size void infy_fork (EV_P);
1778#endif 2461#endif
… …
1793 infy_fork (EV_A); 2476 infy_fork (EV_A);
1794#endif 2477#endif
1795 2478
1796 if (ev_is_active (&pipe_w)) 2479 if (ev_is_active (&pipe_w))
1797 { 2480 {
1798 /* this "locks" the handlers against writing to the pipe */ 2481 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804 2482
1805 ev_ref (EV_A); 2483 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2484 ev_io_stop (EV_A_ &pipe_w);
1807 2485
1808#if EV_USE_EVENTFD 2486#if EV_USE_EVENTFD
… …
1826 postfork = 0; 2504 postfork = 0;
1827} 2505}
1828 2506
1829#if EV_MULTIPLICITY 2507#if EV_MULTIPLICITY
1830 2508
1831struct ev_loop * 2509struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2510ev_loop_new (unsigned int flags) EV_THROW
1833{ 2511{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2512 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2513
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2514 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2515 loop_init (EV_A_ flags);
1838 2516
1839 if (ev_backend (EV_A)) 2517 if (ev_backend (EV_A))
1840 return EV_A; 2518 return EV_A;
1841 2519
2520 ev_free (EV_A);
1842 return 0; 2521 return 0;
1843} 2522}
1844 2523
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 2524#endif /* multiplicity */
1858 2525
1859#if EV_VERIFY 2526#if EV_VERIFY
1860static void noinline 2527static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2528verify_watcher (EV_P_ W w)
1862{ 2529{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2530 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2531
1865 if (w->pending) 2532 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2533 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2534}
1868 2535
1869static void noinline 2536static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2537verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2538{
1872 int i; 2539 int i;
1873 2540
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2541 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2546
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2547 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2548 }
1882} 2549}
1883 2550
1884static void noinline 2551static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2552array_verify (EV_P_ W *ws, int cnt)
1886{ 2553{
1887 while (cnt--) 2554 while (cnt--)
1888 { 2555 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2556 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2558 }
1892} 2559}
1893#endif 2560#endif
1894 2561
1895#if EV_FEATURE_API 2562#if EV_FEATURE_API
1896void 2563void ecb_cold
1897ev_verify (EV_P) 2564ev_verify (EV_P) EV_THROW
1898{ 2565{
1899#if EV_VERIFY 2566#if EV_VERIFY
1900 int i; 2567 int i, j;
1901 WL w; 2568 WL w, w2;
1902 2569
1903 assert (activecnt >= -1); 2570 assert (activecnt >= -1);
1904 2571
1905 assert (fdchangemax >= fdchangecnt); 2572 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2573 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2574 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2575
1909 assert (anfdmax >= 0); 2576 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2577 for (i = j = 0; i < anfdmax; ++i)
1911 for (w = anfds [i].head; w; w = w->next) 2578 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2579 {
1913 verify_watcher (EV_A_ (W)w); 2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (++j & 1)
2583 w2 = w2->next;
2584
2585 assert (("libev: io watcher list contains a loop", w != w2));
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2586 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2587 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2588 }
1917 2589
1918 assert (timermax >= timercnt); 2590 assert (timermax >= timercnt);
… …
1936#if EV_FORK_ENABLE 2608#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2609 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2610 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2611#endif
1940 2612
2613#if EV_CLEANUP_ENABLE
2614 assert (cleanupmax >= cleanupcnt);
2615 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2616#endif
2617
1941#if EV_ASYNC_ENABLE 2618#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2619 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2620 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2621#endif
1945 2622
… …
1962#endif 2639#endif
1963} 2640}
1964#endif 2641#endif
1965 2642
1966#if EV_MULTIPLICITY 2643#if EV_MULTIPLICITY
1967struct ev_loop * 2644struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2645#else
1970int 2646int
2647#endif
1971ev_default_loop (unsigned int flags) 2648ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2649{
1974 if (!ev_default_loop_ptr) 2650 if (!ev_default_loop_ptr)
1975 { 2651 {
1976#if EV_MULTIPLICITY 2652#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2653 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2672
1997 return ev_default_loop_ptr; 2673 return ev_default_loop_ptr;
1998} 2674}
1999 2675
2000void 2676void
2001ev_default_destroy (void) 2677ev_loop_fork (EV_P) EV_THROW
2002{ 2678{
2003#if EV_MULTIPLICITY
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */ 2679 postfork = 1; /* must be in line with ev_default_fork */
2025} 2680}
2026 2681
2027/*****************************************************************************/ 2682/*****************************************************************************/
2028 2683
2029void 2684void
… …
2031{ 2686{
2032 EV_CB_INVOKE ((W)w, revents); 2687 EV_CB_INVOKE ((W)w, revents);
2033} 2688}
2034 2689
2035unsigned int 2690unsigned int
2036ev_pending_count (EV_P) 2691ev_pending_count (EV_P) EV_THROW
2037{ 2692{
2038 int pri; 2693 int pri;
2039 unsigned int count = 0; 2694 unsigned int count = 0;
2040 2695
2041 for (pri = NUMPRI; pri--; ) 2696 for (pri = NUMPRI; pri--; )
… …
2045} 2700}
2046 2701
2047void noinline 2702void noinline
2048ev_invoke_pending (EV_P) 2703ev_invoke_pending (EV_P)
2049{ 2704{
2050 int pri; 2705 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2051
2052 for (pri = NUMPRI; pri--; )
2053 while (pendingcnt [pri]) 2706 while (pendingcnt [pendingpri])
2054 { 2707 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2708 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059 2709
2060 p->w->pending = 0; 2710 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 2711 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 2712 EV_FREQUENT_CHECK;
2063 } 2713 }
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 2775 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 2776 }
2127} 2777}
2128 2778
2129#if EV_PERIODIC_ENABLE 2779#if EV_PERIODIC_ENABLE
2780
2781static void noinline
2782periodic_recalc (EV_P_ ev_periodic *w)
2783{
2784 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2785 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2786
2787 /* the above almost always errs on the low side */
2788 while (at <= ev_rt_now)
2789 {
2790 ev_tstamp nat = at + w->interval;
2791
2792 /* when resolution fails us, we use ev_rt_now */
2793 if (expect_false (nat == at))
2794 {
2795 at = ev_rt_now;
2796 break;
2797 }
2798
2799 at = nat;
2800 }
2801
2802 ev_at (w) = at;
2803}
2804
2130/* make periodics pending */ 2805/* make periodics pending */
2131inline_size void 2806inline_size void
2132periodics_reify (EV_P) 2807periodics_reify (EV_P)
2133{ 2808{
2134 EV_FREQUENT_CHECK; 2809 EV_FREQUENT_CHECK;
… …
2153 ANHE_at_cache (periodics [HEAP0]); 2828 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 2829 downheap (periodics, periodiccnt, HEAP0);
2155 } 2830 }
2156 else if (w->interval) 2831 else if (w->interval)
2157 { 2832 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2833 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 2834 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 2835 downheap (periodics, periodiccnt, HEAP0);
2174 } 2836 }
2175 else 2837 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2838 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 2846 }
2185} 2847}
2186 2848
2187/* simply recalculate all periodics */ 2849/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2850/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 2851static void noinline ecb_cold
2190periodics_reschedule (EV_P) 2852periodics_reschedule (EV_P)
2191{ 2853{
2192 int i; 2854 int i;
2193 2855
2194 /* adjust periodics after time jump */ 2856 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2859 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 2860
2199 if (w->reschedule_cb) 2861 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2862 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 2863 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2864 periodic_recalc (EV_A_ w);
2203 2865
2204 ANHE_at_cache (periodics [i]); 2866 ANHE_at_cache (periodics [i]);
2205 } 2867 }
2206 2868
2207 reheap (periodics, periodiccnt); 2869 reheap (periodics, periodiccnt);
2208} 2870}
2209#endif 2871#endif
2210 2872
2211/* adjust all timers by a given offset */ 2873/* adjust all timers by a given offset */
2212static void noinline 2874static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 2875timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 2876{
2215 int i; 2877 int i;
2216 2878
2217 for (i = 0; i < timercnt; ++i) 2879 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 2916 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 2917 * in the unlikely event of having been preempted here.
2256 */ 2918 */
2257 for (i = 4; --i; ) 2919 for (i = 4; --i; )
2258 { 2920 {
2921 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 2922 rtmn_diff = ev_rt_now - mn_now;
2260 2923
2924 diff = odiff - rtmn_diff;
2925
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2926 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 2927 return; /* all is well */
2263 2928
2264 ev_rt_now = ev_time (); 2929 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 2930 mn_now = get_clock ();
2266 now_floor = mn_now; 2931 now_floor = mn_now;
… …
2288 2953
2289 mn_now = ev_rt_now; 2954 mn_now = ev_rt_now;
2290 } 2955 }
2291} 2956}
2292 2957
2293void 2958int
2294ev_loop (EV_P_ int flags) 2959ev_run (EV_P_ int flags)
2295{ 2960{
2296#if EV_FEATURE_API 2961#if EV_FEATURE_API
2297 ++loop_depth; 2962 ++loop_depth;
2298#endif 2963#endif
2299 2964
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2965 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 2966
2302 loop_done = EVUNLOOP_CANCEL; 2967 loop_done = EVBREAK_CANCEL;
2303 2968
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2969 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 2970
2306 do 2971 do
2307 { 2972 {
… …
2350 /* calculate blocking time */ 3015 /* calculate blocking time */
2351 { 3016 {
2352 ev_tstamp waittime = 0.; 3017 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3018 ev_tstamp sleeptime = 0.;
2354 3019
3020 /* remember old timestamp for io_blocktime calculation */
3021 ev_tstamp prev_mn_now = mn_now;
3022
3023 /* update time to cancel out callback processing overhead */
3024 time_update (EV_A_ 1e100);
3025
3026 /* from now on, we want a pipe-wake-up */
3027 pipe_write_wanted = 1;
3028
3029 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3030
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3031 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3032 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 3033 waittime = MAX_BLOCKTIME;
2364 3034
2365 if (timercnt) 3035 if (timercnt)
2366 { 3036 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3037 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3038 if (waittime > to) waittime = to;
2369 } 3039 }
2370 3040
2371#if EV_PERIODIC_ENABLE 3041#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3042 if (periodiccnt)
2373 { 3043 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3044 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3045 if (waittime > to) waittime = to;
2376 } 3046 }
2377#endif 3047#endif
2378 3048
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3049 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3050 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3051 waittime = timeout_blocktime;
3052
3053 /* at this point, we NEED to wait, so we have to ensure */
3054 /* to pass a minimum nonzero value to the backend */
3055 if (expect_false (waittime < backend_mintime))
3056 waittime = backend_mintime;
2382 3057
2383 /* extra check because io_blocktime is commonly 0 */ 3058 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3059 if (expect_false (io_blocktime))
2385 { 3060 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3061 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3062
2388 if (sleeptime > waittime - backend_fudge) 3063 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3064 sleeptime = waittime - backend_mintime;
2390 3065
2391 if (expect_true (sleeptime > 0.)) 3066 if (expect_true (sleeptime > 0.))
2392 { 3067 {
2393 ev_sleep (sleeptime); 3068 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3069 waittime -= sleeptime;
… …
2397 } 3072 }
2398 3073
2399#if EV_FEATURE_API 3074#if EV_FEATURE_API
2400 ++loop_count; 3075 ++loop_count;
2401#endif 3076#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3077 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3078 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3079 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3080
3081 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3082
3083 if (pipe_write_skipped)
3084 {
3085 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3087 }
3088
2405 3089
2406 /* update ev_rt_now, do magic */ 3090 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3091 time_update (EV_A_ waittime + sleeptime);
2408 } 3092 }
2409 3093
… …
2427 EV_INVOKE_PENDING; 3111 EV_INVOKE_PENDING;
2428 } 3112 }
2429 while (expect_true ( 3113 while (expect_true (
2430 activecnt 3114 activecnt
2431 && !loop_done 3115 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3116 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3117 ));
2434 3118
2435 if (loop_done == EVUNLOOP_ONE) 3119 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3120 loop_done = EVBREAK_CANCEL;
2437 3121
2438#if EV_FEATURE_API 3122#if EV_FEATURE_API
2439 --loop_depth; 3123 --loop_depth;
2440#endif 3124#endif
3125
3126 return activecnt;
2441} 3127}
2442 3128
2443void 3129void
2444ev_unloop (EV_P_ int how) 3130ev_break (EV_P_ int how) EV_THROW
2445{ 3131{
2446 loop_done = how; 3132 loop_done = how;
2447} 3133}
2448 3134
2449void 3135void
2450ev_ref (EV_P) 3136ev_ref (EV_P) EV_THROW
2451{ 3137{
2452 ++activecnt; 3138 ++activecnt;
2453} 3139}
2454 3140
2455void 3141void
2456ev_unref (EV_P) 3142ev_unref (EV_P) EV_THROW
2457{ 3143{
2458 --activecnt; 3144 --activecnt;
2459} 3145}
2460 3146
2461void 3147void
2462ev_now_update (EV_P) 3148ev_now_update (EV_P) EV_THROW
2463{ 3149{
2464 time_update (EV_A_ 1e100); 3150 time_update (EV_A_ 1e100);
2465} 3151}
2466 3152
2467void 3153void
2468ev_suspend (EV_P) 3154ev_suspend (EV_P) EV_THROW
2469{ 3155{
2470 ev_now_update (EV_A); 3156 ev_now_update (EV_A);
2471} 3157}
2472 3158
2473void 3159void
2474ev_resume (EV_P) 3160ev_resume (EV_P) EV_THROW
2475{ 3161{
2476 ev_tstamp mn_prev = mn_now; 3162 ev_tstamp mn_prev = mn_now;
2477 3163
2478 ev_now_update (EV_A); 3164 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3165 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3204 w->pending = 0;
2519 } 3205 }
2520} 3206}
2521 3207
2522int 3208int
2523ev_clear_pending (EV_P_ void *w) 3209ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3210{
2525 W w_ = (W)w; 3211 W w_ = (W)w;
2526 int pending = w_->pending; 3212 int pending = w_->pending;
2527 3213
2528 if (expect_true (pending)) 3214 if (expect_true (pending))
… …
2561} 3247}
2562 3248
2563/*****************************************************************************/ 3249/*****************************************************************************/
2564 3250
2565void noinline 3251void noinline
2566ev_io_start (EV_P_ ev_io *w) 3252ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3253{
2568 int fd = w->fd; 3254 int fd = w->fd;
2569 3255
2570 if (expect_false (ev_is_active (w))) 3256 if (expect_false (ev_is_active (w)))
2571 return; 3257 return;
… …
2577 3263
2578 ev_start (EV_A_ (W)w, 1); 3264 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3265 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3266 wlist_add (&anfds[fd].head, (WL)w);
2581 3267
3268 /* common bug, apparently */
3269 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3270
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3271 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3272 w->events &= ~EV__IOFDSET;
2584 3273
2585 EV_FREQUENT_CHECK; 3274 EV_FREQUENT_CHECK;
2586} 3275}
2587 3276
2588void noinline 3277void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3278ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3279{
2591 clear_pending (EV_A_ (W)w); 3280 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3281 if (expect_false (!ev_is_active (w)))
2593 return; 3282 return;
2594 3283
… …
2597 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2598 3287
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3288 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3289 ev_stop (EV_A_ (W)w);
2601 3290
2602 fd_change (EV_A_ w->fd, 1); 3291 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3292
2604 EV_FREQUENT_CHECK; 3293 EV_FREQUENT_CHECK;
2605} 3294}
2606 3295
2607void noinline 3296void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3297ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3298{
2610 if (expect_false (ev_is_active (w))) 3299 if (expect_false (ev_is_active (w)))
2611 return; 3300 return;
2612 3301
2613 ev_at (w) += mn_now; 3302 ev_at (w) += mn_now;
… …
2627 3316
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3317 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3318}
2630 3319
2631void noinline 3320void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3321ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3322{
2634 clear_pending (EV_A_ (W)w); 3323 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3324 if (expect_false (!ev_is_active (w)))
2636 return; 3325 return;
2637 3326
… …
2657 3346
2658 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
2659} 3348}
2660 3349
2661void noinline 3350void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3351ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3352{
2664 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
3354
3355 clear_pending (EV_A_ (W)w);
2665 3356
2666 if (ev_is_active (w)) 3357 if (ev_is_active (w))
2667 { 3358 {
2668 if (w->repeat) 3359 if (w->repeat)
2669 { 3360 {
… …
2682 3373
2683 EV_FREQUENT_CHECK; 3374 EV_FREQUENT_CHECK;
2684} 3375}
2685 3376
2686ev_tstamp 3377ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3378ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3379{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3380 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3381}
2691 3382
2692#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2693void noinline 3384void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3385ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3386{
2696 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2697 return; 3388 return;
2698 3389
2699 if (w->reschedule_cb) 3390 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3391 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3392 else if (w->interval)
2702 { 3393 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 3395 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3396 }
2707 else 3397 else
2708 ev_at (w) = w->offset; 3398 ev_at (w) = w->offset;
2709 3399
2710 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
… …
2720 3410
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3411 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3412}
2723 3413
2724void noinline 3414void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3415ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3416{
2727 clear_pending (EV_A_ (W)w); 3417 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3418 if (expect_false (!ev_is_active (w)))
2729 return; 3419 return;
2730 3420
… …
2748 3438
2749 EV_FREQUENT_CHECK; 3439 EV_FREQUENT_CHECK;
2750} 3440}
2751 3441
2752void noinline 3442void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3443ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3444{
2755 /* TODO: use adjustheap and recalculation */ 3445 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3446 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3447 ev_periodic_start (EV_A_ w);
2758} 3448}
… …
2763#endif 3453#endif
2764 3454
2765#if EV_SIGNAL_ENABLE 3455#if EV_SIGNAL_ENABLE
2766 3456
2767void noinline 3457void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3458ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3459{
2770 if (expect_false (ev_is_active (w))) 3460 if (expect_false (ev_is_active (w)))
2771 return; 3461 return;
2772 3462
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3463 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2831 sa.sa_handler = ev_sighandler; 3521 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3522 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3523 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3524 sigaction (w->signum, &sa, 0);
2835 3525
3526 if (origflags & EVFLAG_NOSIGMASK)
3527 {
2836 sigemptyset (&sa.sa_mask); 3528 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3529 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3530 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3531 }
2839#endif 3532#endif
2840 } 3533 }
2841 3534
2842 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2843} 3536}
2844 3537
2845void noinline 3538void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3539ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3540{
2848 clear_pending (EV_A_ (W)w); 3541 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3542 if (expect_false (!ev_is_active (w)))
2850 return; 3543 return;
2851 3544
… …
2882#endif 3575#endif
2883 3576
2884#if EV_CHILD_ENABLE 3577#if EV_CHILD_ENABLE
2885 3578
2886void 3579void
2887ev_child_start (EV_P_ ev_child *w) 3580ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3581{
2889#if EV_MULTIPLICITY 3582#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3583 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3584#endif
2892 if (expect_false (ev_is_active (w))) 3585 if (expect_false (ev_is_active (w)))
… …
2899 3592
2900 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2901} 3594}
2902 3595
2903void 3596void
2904ev_child_stop (EV_P_ ev_child *w) 3597ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3598{
2906 clear_pending (EV_A_ (W)w); 3599 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3600 if (expect_false (!ev_is_active (w)))
2908 return; 3601 return;
2909 3602
… …
2984 if (!pend || pend == path) 3677 if (!pend || pend == path)
2985 break; 3678 break;
2986 3679
2987 *pend = 0; 3680 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 3681 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 3682 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3683 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 3684 }
2992 } 3685 }
2993 3686
2994 if (w->wd >= 0) 3687 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3754 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 3755 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 3756 }
3064} 3757}
3065 3758
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 3759inline_size void ecb_cold
3099ev_check_2625 (EV_P) 3760ev_check_2625 (EV_P)
3100{ 3761{
3101 /* kernels < 2.6.25 are borked 3762 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3763 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 3764 */
… …
3108} 3769}
3109 3770
3110inline_size int 3771inline_size int
3111infy_newfd (void) 3772infy_newfd (void)
3112{ 3773{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3774#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3775 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 3776 if (fd >= 0)
3116 return fd; 3777 return fd;
3117#endif 3778#endif
3118 return inotify_init (); 3779 return inotify_init ();
… …
3193#else 3854#else
3194# define EV_LSTAT(p,b) lstat (p, b) 3855# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 3856#endif
3196 3857
3197void 3858void
3198ev_stat_stat (EV_P_ ev_stat *w) 3859ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 3860{
3200 if (lstat (w->path, &w->attr) < 0) 3861 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 3862 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 3863 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 3864 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 3903 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 3904 }
3244} 3905}
3245 3906
3246void 3907void
3247ev_stat_start (EV_P_ ev_stat *w) 3908ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 3909{
3249 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
3250 return; 3911 return;
3251 3912
3252 ev_stat_stat (EV_A_ w); 3913 ev_stat_stat (EV_A_ w);
… …
3273 3934
3274 EV_FREQUENT_CHECK; 3935 EV_FREQUENT_CHECK;
3275} 3936}
3276 3937
3277void 3938void
3278ev_stat_stop (EV_P_ ev_stat *w) 3939ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 3940{
3280 clear_pending (EV_A_ (W)w); 3941 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 3942 if (expect_false (!ev_is_active (w)))
3282 return; 3943 return;
3283 3944
… …
3299} 3960}
3300#endif 3961#endif
3301 3962
3302#if EV_IDLE_ENABLE 3963#if EV_IDLE_ENABLE
3303void 3964void
3304ev_idle_start (EV_P_ ev_idle *w) 3965ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 3966{
3306 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
3307 return; 3968 return;
3308 3969
3309 pri_adjust (EV_A_ (W)w); 3970 pri_adjust (EV_A_ (W)w);
… …
3322 3983
3323 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
3324} 3985}
3325 3986
3326void 3987void
3327ev_idle_stop (EV_P_ ev_idle *w) 3988ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 3989{
3329 clear_pending (EV_A_ (W)w); 3990 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 3991 if (expect_false (!ev_is_active (w)))
3331 return; 3992 return;
3332 3993
… …
3346} 4007}
3347#endif 4008#endif
3348 4009
3349#if EV_PREPARE_ENABLE 4010#if EV_PREPARE_ENABLE
3350void 4011void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4012ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4013{
3353 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
3354 return; 4015 return;
3355 4016
3356 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
… …
3361 4022
3362 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
3363} 4024}
3364 4025
3365void 4026void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4027ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4028{
3368 clear_pending (EV_A_ (W)w); 4029 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4030 if (expect_false (!ev_is_active (w)))
3370 return; 4031 return;
3371 4032
… …
3384} 4045}
3385#endif 4046#endif
3386 4047
3387#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
3388void 4049void
3389ev_check_start (EV_P_ ev_check *w) 4050ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4051{
3391 if (expect_false (ev_is_active (w))) 4052 if (expect_false (ev_is_active (w)))
3392 return; 4053 return;
3393 4054
3394 EV_FREQUENT_CHECK; 4055 EV_FREQUENT_CHECK;
… …
3399 4060
3400 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
3401} 4062}
3402 4063
3403void 4064void
3404ev_check_stop (EV_P_ ev_check *w) 4065ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4066{
3406 clear_pending (EV_A_ (W)w); 4067 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4068 if (expect_false (!ev_is_active (w)))
3408 return; 4069 return;
3409 4070
… …
3422} 4083}
3423#endif 4084#endif
3424 4085
3425#if EV_EMBED_ENABLE 4086#if EV_EMBED_ENABLE
3426void noinline 4087void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4088ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4089{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4090 ev_run (w->other, EVRUN_NOWAIT);
3430} 4091}
3431 4092
3432static void 4093static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4094embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4095{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4096 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4097
3437 if (ev_cb (w)) 4098 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4099 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4100 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4101 ev_run (w->other, EVRUN_NOWAIT);
3441} 4102}
3442 4103
3443static void 4104static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4105embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4106{
… …
3449 EV_P = w->other; 4110 EV_P = w->other;
3450 4111
3451 while (fdchangecnt) 4112 while (fdchangecnt)
3452 { 4113 {
3453 fd_reify (EV_A); 4114 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4116 }
3456 } 4117 }
3457} 4118}
3458 4119
3459static void 4120static void
… …
3465 4126
3466 { 4127 {
3467 EV_P = w->other; 4128 EV_P = w->other;
3468 4129
3469 ev_loop_fork (EV_A); 4130 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4131 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4132 }
3472 4133
3473 ev_embed_start (EV_A_ w); 4134 ev_embed_start (EV_A_ w);
3474} 4135}
3475 4136
… …
3480 ev_idle_stop (EV_A_ idle); 4141 ev_idle_stop (EV_A_ idle);
3481} 4142}
3482#endif 4143#endif
3483 4144
3484void 4145void
3485ev_embed_start (EV_P_ ev_embed *w) 4146ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4147{
3487 if (expect_false (ev_is_active (w))) 4148 if (expect_false (ev_is_active (w)))
3488 return; 4149 return;
3489 4150
3490 { 4151 {
… …
3511 4172
3512 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
3513} 4174}
3514 4175
3515void 4176void
3516ev_embed_stop (EV_P_ ev_embed *w) 4177ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4178{
3518 clear_pending (EV_A_ (W)w); 4179 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4180 if (expect_false (!ev_is_active (w)))
3520 return; 4181 return;
3521 4182
… …
3531} 4192}
3532#endif 4193#endif
3533 4194
3534#if EV_FORK_ENABLE 4195#if EV_FORK_ENABLE
3535void 4196void
3536ev_fork_start (EV_P_ ev_fork *w) 4197ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4198{
3538 if (expect_false (ev_is_active (w))) 4199 if (expect_false (ev_is_active (w)))
3539 return; 4200 return;
3540 4201
3541 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
… …
3546 4207
3547 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3548} 4209}
3549 4210
3550void 4211void
3551ev_fork_stop (EV_P_ ev_fork *w) 4212ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4213{
3553 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4215 if (expect_false (!ev_is_active (w)))
3555 return; 4216 return;
3556 4217
… …
3567 4228
3568 EV_FREQUENT_CHECK; 4229 EV_FREQUENT_CHECK;
3569} 4230}
3570#endif 4231#endif
3571 4232
4233#if EV_CLEANUP_ENABLE
4234void
4235ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4236{
4237 if (expect_false (ev_is_active (w)))
4238 return;
4239
4240 EV_FREQUENT_CHECK;
4241
4242 ev_start (EV_A_ (W)w, ++cleanupcnt);
4243 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4244 cleanups [cleanupcnt - 1] = w;
4245
4246 /* cleanup watchers should never keep a refcount on the loop */
4247 ev_unref (EV_A);
4248 EV_FREQUENT_CHECK;
4249}
4250
4251void
4252ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4253{
4254 clear_pending (EV_A_ (W)w);
4255 if (expect_false (!ev_is_active (w)))
4256 return;
4257
4258 EV_FREQUENT_CHECK;
4259 ev_ref (EV_A);
4260
4261 {
4262 int active = ev_active (w);
4263
4264 cleanups [active - 1] = cleanups [--cleanupcnt];
4265 ev_active (cleanups [active - 1]) = active;
4266 }
4267
4268 ev_stop (EV_A_ (W)w);
4269
4270 EV_FREQUENT_CHECK;
4271}
4272#endif
4273
3572#if EV_ASYNC_ENABLE 4274#if EV_ASYNC_ENABLE
3573void 4275void
3574ev_async_start (EV_P_ ev_async *w) 4276ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4277{
3576 if (expect_false (ev_is_active (w))) 4278 if (expect_false (ev_is_active (w)))
3577 return; 4279 return;
4280
4281 w->sent = 0;
3578 4282
3579 evpipe_init (EV_A); 4283 evpipe_init (EV_A);
3580 4284
3581 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
3582 4286
… …
3586 4290
3587 EV_FREQUENT_CHECK; 4291 EV_FREQUENT_CHECK;
3588} 4292}
3589 4293
3590void 4294void
3591ev_async_stop (EV_P_ ev_async *w) 4295ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4296{
3593 clear_pending (EV_A_ (W)w); 4297 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4298 if (expect_false (!ev_is_active (w)))
3595 return; 4299 return;
3596 4300
… …
3607 4311
3608 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3609} 4313}
3610 4314
3611void 4315void
3612ev_async_send (EV_P_ ev_async *w) 4316ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4317{
3614 w->sent = 1; 4318 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4319 evpipe_write (EV_A_ &async_pending);
3616} 4320}
3617#endif 4321#endif
… …
3654 4358
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4359 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4360}
3657 4361
3658void 4362void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4363ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4364{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4365 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4366
3663 if (expect_false (!once)) 4367 if (expect_false (!once))
3664 { 4368 {
… …
3685} 4389}
3686 4390
3687/*****************************************************************************/ 4391/*****************************************************************************/
3688 4392
3689#if EV_WALK_ENABLE 4393#if EV_WALK_ENABLE
3690void 4394void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4395ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4396{
3693 int i, j; 4397 int i, j;
3694 ev_watcher_list *wl, *wn; 4398 ev_watcher_list *wl, *wn;
3695 4399
3696 if (types & (EV_IO | EV_EMBED)) 4400 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4443 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4444#endif
3741 4445
3742#if EV_IDLE_ENABLE 4446#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4447 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4448 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4449 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4450 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4451#endif
3748 4452
3749#if EV_FORK_ENABLE 4453#if EV_FORK_ENABLE
… …
3802 4506
3803#if EV_MULTIPLICITY 4507#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4508 #include "ev_wrap.h"
3805#endif 4509#endif
3806 4510
3807#ifdef __cplusplus
3808}
3809#endif
3810

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