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Comparing libev/ev.c (file contents):
Revision 1.375 by root, Sat Jun 4 05:25:03 2011 UTC vs.
Revision 1.466 by root, Tue Mar 25 19:26:42 2014 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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 *
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
183# include EV_H 183# include EV_H
184#else 184#else
185# include "ev.h" 185# include "ev.h"
186#endif 186#endif
187 187
188EV_CPP(extern "C" {) 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
197#endif
189 198
190#ifndef _WIN32 199#ifndef _WIN32
191# include <sys/time.h> 200# include <sys/time.h>
192# include <sys/wait.h> 201# include <sys/wait.h>
193# include <unistd.h> 202# include <unistd.h>
194#else 203#else
195# include <io.h> 204# include <io.h>
196# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
197# include <windows.h> 207# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
200# endif 210# endif
201# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
210#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
211 221
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
213 223
214/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 225#if defined EV_NSIG
216/* use what's provided */ 226/* use what's provided */
217#elif defined (NSIG) 227#elif defined NSIG
218# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 229#elif defined _NSIG
220# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 231#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 233#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 237#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 239#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 243#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 245#else
236# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 247#endif
241 248
242#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
244#endif 251#endif
245 252
246#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 256# else
250# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
251# endif 258# endif
252#endif 259#endif
253 260
254#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 264# else
258# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
259# endif 266# endif
260#endif 267#endif
… …
347 354
348#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 357#endif
351 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 378# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
360# else 383# else
… …
363# endif 386# endif
364#endif 387#endif
365 388
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 390
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
377#endif 394#endif
378 395
… …
386# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
387#endif 404#endif
388 405
389#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 408# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 409# include <sys/select.h>
393# endif 410# endif
394#endif 411#endif
395 412
396#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
403# endif 420# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 421#endif
409 422
410#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 425# include <stdint.h>
… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 478
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 */
512
513#ifndef ECB_H
514#define ECB_H
515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
519#ifdef _WIN32
520 typedef signed char int8_t;
521 typedef unsigned char uint8_t;
522 typedef signed short int16_t;
523 typedef unsigned short uint16_t;
524 typedef signed int int32_t;
525 typedef unsigned int uint32_t;
469#if __GNUC__ >= 4 526 #if __GNUC__
470# define expect(expr,value) __builtin_expect ((expr),(value)) 527 typedef signed long long int64_t;
471# define noinline __attribute__ ((noinline)) 528 typedef unsigned long long uint64_t;
529 #else /* _MSC_VER || __BORLANDC__ */
530 typedef signed __int64 int64_t;
531 typedef unsigned __int64 uint64_t;
532 #endif
533 #ifdef _WIN64
534 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t;
537 #else
538 #define ECB_PTRSIZE 4
539 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t;
541 #endif
472#else 542#else
473# define expect(expr,value) (expr) 543 #include <inttypes.h>
474# define noinline 544 #if UINTMAX_MAX > 0xffffffffU
475# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 545 #define ECB_PTRSIZE 8
476# define inline 546 #else
547 #define ECB_PTRSIZE 4
548 #endif
477# endif 549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
478#endif 557 #endif
558#endif
479 559
560/* many compilers define _GNUC_ to some versions but then only implement
561 * what their idiot authors think are the "more important" extensions,
562 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place.
566 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0
570 #else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif
573#endif
574
575#define ECB_CPP (__cplusplus+0)
576#define ECB_CPP11 (__cplusplus >= 201103L)
577
578#if ECB_CPP
579 #define ECB_C 0
580 #define ECB_STDC_VERSION 0
581#else
582 #define ECB_C 1
583 #define ECB_STDC_VERSION __STDC_VERSION__
584#endif
585
586#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
587#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
588
589#if ECB_CPP
590 #define ECB_EXTERN_C extern "C"
591 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
592 #define ECB_EXTERN_C_END }
593#else
594 #define ECB_EXTERN_C extern
595 #define ECB_EXTERN_C_BEG
596 #define ECB_EXTERN_C_END
597#endif
598
599/*****************************************************************************/
600
601/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
602/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
603
604#if ECB_NO_THREADS
605 #define ECB_NO_SMP 1
606#endif
607
608#if ECB_NO_SMP
609 #define ECB_MEMORY_FENCE do { } while (0)
610#endif
611
612#ifndef ECB_MEMORY_FENCE
613 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
614 #if __i386 || __i386__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
616 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
617 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
618 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
619 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
620 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
621 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
622 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
625 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
627 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
628 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
629 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
630 #elif __aarch64__
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
632 #elif (__sparc || __sparc__) && !__sparcv8
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
634 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
635 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
636 #elif defined __s390__ || defined __s390x__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
638 #elif defined __mips__
639 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
640 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
642 #elif defined __alpha__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
644 #elif defined __hppa__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
647 #elif defined __ia64__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
649 #elif defined __m68k__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
651 #elif defined __m88k__
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
653 #elif defined __sh__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
655 #endif
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_GCC_VERSION(4,7)
661 /* see comment below (stdatomic.h) about the C11 memory model. */
662 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
663 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
664 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
665
666 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
667 * without risking compile time errors with other compilers. We *could*
668 * define our own ecb_clang_has_feature, but I just can't be bothered to work
669 * around this shit time and again.
670 * #elif defined __clang && __has_feature (cxx_atomic)
671 * // see comment below (stdatomic.h) about the C11 memory model.
672 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
673 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
674 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
675 */
676
677 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
678 #define ECB_MEMORY_FENCE __sync_synchronize ()
679 #elif _MSC_VER >= 1500 /* VC++ 2008 */
680 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
681 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
682 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
683 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
684 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
685 #elif _MSC_VER >= 1400 /* VC++ 2005 */
686 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
687 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
688 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
689 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
690 #elif defined _WIN32
691 #include <WinNT.h>
692 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
693 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
694 #include <mbarrier.h>
695 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
696 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
697 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
698 #elif __xlC__
699 #define ECB_MEMORY_FENCE __sync ()
700 #endif
701#endif
702
703#ifndef ECB_MEMORY_FENCE
704 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
705 /* we assume that these memory fences work on all variables/all memory accesses, */
706 /* not just C11 atomics and atomic accesses */
707 #include <stdatomic.h>
708 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
709 /* any fence other than seq_cst, which isn't very efficient for us. */
710 /* Why that is, we don't know - either the C11 memory model is quite useless */
711 /* for most usages, or gcc and clang have a bug */
712 /* I *currently* lean towards the latter, and inefficiently implement */
713 /* all three of ecb's fences as a seq_cst fence */
714 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
715 /* for all __atomic_thread_fence's except seq_cst */
716 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
717 #endif
718#endif
719
720#ifndef ECB_MEMORY_FENCE
721 #if !ECB_AVOID_PTHREADS
722 /*
723 * if you get undefined symbol references to pthread_mutex_lock,
724 * or failure to find pthread.h, then you should implement
725 * the ECB_MEMORY_FENCE operations for your cpu/compiler
726 * OR provide pthread.h and link against the posix thread library
727 * of your system.
728 */
729 #include <pthread.h>
730 #define ECB_NEEDS_PTHREADS 1
731 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
732
733 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
734 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
735 #endif
736#endif
737
738#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
739 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
740#endif
741
742#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
743 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
744#endif
745
746/*****************************************************************************/
747
748#if __cplusplus
749 #define ecb_inline static inline
750#elif ECB_GCC_VERSION(2,5)
751 #define ecb_inline static __inline__
752#elif ECB_C99
753 #define ecb_inline static inline
754#else
755 #define ecb_inline static
756#endif
757
758#if ECB_GCC_VERSION(3,3)
759 #define ecb_restrict __restrict__
760#elif ECB_C99
761 #define ecb_restrict restrict
762#else
763 #define ecb_restrict
764#endif
765
766typedef int ecb_bool;
767
768#define ECB_CONCAT_(a, b) a ## b
769#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
770#define ECB_STRINGIFY_(a) # a
771#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
772
773#define ecb_function_ ecb_inline
774
775#if ECB_GCC_VERSION(3,1)
776 #define ecb_attribute(attrlist) __attribute__(attrlist)
777 #define ecb_is_constant(expr) __builtin_constant_p (expr)
778 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
779 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
780#else
781 #define ecb_attribute(attrlist)
782
783 /* possible C11 impl for integral types
784 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
785 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
786
787 #define ecb_is_constant(expr) 0
788 #define ecb_expect(expr,value) (expr)
789 #define ecb_prefetch(addr,rw,locality)
790#endif
791
792/* no emulation for ecb_decltype */
793#if ECB_GCC_VERSION(4,5)
794 #define ecb_decltype(x) __decltype(x)
795#elif ECB_GCC_VERSION(3,0)
796 #define ecb_decltype(x) __typeof(x)
797#endif
798
799#define ecb_noinline ecb_attribute ((__noinline__))
800#define ecb_unused ecb_attribute ((__unused__))
801#define ecb_const ecb_attribute ((__const__))
802#define ecb_pure ecb_attribute ((__pure__))
803
804#if ECB_C11
805 #define ecb_noreturn _Noreturn
806#else
807 #define ecb_noreturn ecb_attribute ((__noreturn__))
808#endif
809
810#if ECB_GCC_VERSION(4,3)
811 #define ecb_artificial ecb_attribute ((__artificial__))
812 #define ecb_hot ecb_attribute ((__hot__))
813 #define ecb_cold ecb_attribute ((__cold__))
814#else
815 #define ecb_artificial
816 #define ecb_hot
817 #define ecb_cold
818#endif
819
820/* put around conditional expressions if you are very sure that the */
821/* expression is mostly true or mostly false. note that these return */
822/* booleans, not the expression. */
480#define expect_false(expr) expect ((expr) != 0, 0) 823#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481#define expect_true(expr) expect ((expr) != 0, 1) 824#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
825/* for compatibility to the rest of the world */
826#define ecb_likely(expr) ecb_expect_true (expr)
827#define ecb_unlikely(expr) ecb_expect_false (expr)
828
829/* count trailing zero bits and count # of one bits */
830#if ECB_GCC_VERSION(3,4)
831 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
832 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
833 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
834 #define ecb_ctz32(x) __builtin_ctz (x)
835 #define ecb_ctz64(x) __builtin_ctzll (x)
836 #define ecb_popcount32(x) __builtin_popcount (x)
837 /* no popcountll */
838#else
839 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
840 ecb_function_ int
841 ecb_ctz32 (uint32_t x)
842 {
843 int r = 0;
844
845 x &= ~x + 1; /* this isolates the lowest bit */
846
847#if ECB_branchless_on_i386
848 r += !!(x & 0xaaaaaaaa) << 0;
849 r += !!(x & 0xcccccccc) << 1;
850 r += !!(x & 0xf0f0f0f0) << 2;
851 r += !!(x & 0xff00ff00) << 3;
852 r += !!(x & 0xffff0000) << 4;
853#else
854 if (x & 0xaaaaaaaa) r += 1;
855 if (x & 0xcccccccc) r += 2;
856 if (x & 0xf0f0f0f0) r += 4;
857 if (x & 0xff00ff00) r += 8;
858 if (x & 0xffff0000) r += 16;
859#endif
860
861 return r;
862 }
863
864 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
865 ecb_function_ int
866 ecb_ctz64 (uint64_t x)
867 {
868 int shift = x & 0xffffffffU ? 0 : 32;
869 return ecb_ctz32 (x >> shift) + shift;
870 }
871
872 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
873 ecb_function_ int
874 ecb_popcount32 (uint32_t x)
875 {
876 x -= (x >> 1) & 0x55555555;
877 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
878 x = ((x >> 4) + x) & 0x0f0f0f0f;
879 x *= 0x01010101;
880
881 return x >> 24;
882 }
883
884 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
885 ecb_function_ int ecb_ld32 (uint32_t x)
886 {
887 int r = 0;
888
889 if (x >> 16) { x >>= 16; r += 16; }
890 if (x >> 8) { x >>= 8; r += 8; }
891 if (x >> 4) { x >>= 4; r += 4; }
892 if (x >> 2) { x >>= 2; r += 2; }
893 if (x >> 1) { r += 1; }
894
895 return r;
896 }
897
898 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
899 ecb_function_ int ecb_ld64 (uint64_t x)
900 {
901 int r = 0;
902
903 if (x >> 32) { x >>= 32; r += 32; }
904
905 return r + ecb_ld32 (x);
906 }
907#endif
908
909ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
910ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
911ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
912ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
913
914ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
915ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
916{
917 return ( (x * 0x0802U & 0x22110U)
918 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
919}
920
921ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
922ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
923{
924 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
925 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
926 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
927 x = ( x >> 8 ) | ( x << 8);
928
929 return x;
930}
931
932ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
933ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
934{
935 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
936 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
937 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
938 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
939 x = ( x >> 16 ) | ( x << 16);
940
941 return x;
942}
943
944/* popcount64 is only available on 64 bit cpus as gcc builtin */
945/* so for this version we are lazy */
946ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
947ecb_function_ int
948ecb_popcount64 (uint64_t x)
949{
950 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
951}
952
953ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
954ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
955ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
956ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
957ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
958ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
959ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
960ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
961
962ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
963ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
964ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
965ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
966ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
967ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
968ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
969ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
970
971#if ECB_GCC_VERSION(4,3)
972 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
973 #define ecb_bswap32(x) __builtin_bswap32 (x)
974 #define ecb_bswap64(x) __builtin_bswap64 (x)
975#else
976 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
977 ecb_function_ uint16_t
978 ecb_bswap16 (uint16_t x)
979 {
980 return ecb_rotl16 (x, 8);
981 }
982
983 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
984 ecb_function_ uint32_t
985 ecb_bswap32 (uint32_t x)
986 {
987 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
988 }
989
990 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
991 ecb_function_ uint64_t
992 ecb_bswap64 (uint64_t x)
993 {
994 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
995 }
996#endif
997
998#if ECB_GCC_VERSION(4,5)
999 #define ecb_unreachable() __builtin_unreachable ()
1000#else
1001 /* this seems to work fine, but gcc always emits a warning for it :/ */
1002 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1003 ecb_inline void ecb_unreachable (void) { }
1004#endif
1005
1006/* try to tell the compiler that some condition is definitely true */
1007#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1008
1009ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1010ecb_inline unsigned char
1011ecb_byteorder_helper (void)
1012{
1013 /* the union code still generates code under pressure in gcc, */
1014 /* but less than using pointers, and always seems to */
1015 /* successfully return a constant. */
1016 /* the reason why we have this horrible preprocessor mess */
1017 /* is to avoid it in all cases, at least on common architectures */
1018 /* or when using a recent enough gcc version (>= 4.6) */
1019#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1020 return 0x44;
1021#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1022 return 0x44;
1023#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1024 return 0x11;
1025#else
1026 union
1027 {
1028 uint32_t i;
1029 uint8_t c;
1030 } u = { 0x11223344 };
1031 return u.c;
1032#endif
1033}
1034
1035ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1036ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1037ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1038ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1039
1040#if ECB_GCC_VERSION(3,0) || ECB_C99
1041 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1042#else
1043 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1044#endif
1045
1046#if __cplusplus
1047 template<typename T>
1048 static inline T ecb_div_rd (T val, T div)
1049 {
1050 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1051 }
1052 template<typename T>
1053 static inline T ecb_div_ru (T val, T div)
1054 {
1055 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1056 }
1057#else
1058 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1059 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1060#endif
1061
1062#if ecb_cplusplus_does_not_suck
1063 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1064 template<typename T, int N>
1065 static inline int ecb_array_length (const T (&arr)[N])
1066 {
1067 return N;
1068 }
1069#else
1070 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1071#endif
1072
1073/*******************************************************************************/
1074/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1075
1076/* basically, everything uses "ieee pure-endian" floating point numbers */
1077/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1078#if 0 \
1079 || __i386 || __i386__ \
1080 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1081 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1082 || defined __s390__ || defined __s390x__ \
1083 || defined __mips__ \
1084 || defined __alpha__ \
1085 || defined __hppa__ \
1086 || defined __ia64__ \
1087 || defined __m68k__ \
1088 || defined __m88k__ \
1089 || defined __sh__ \
1090 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1091 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1092 || defined __aarch64__
1093 #define ECB_STDFP 1
1094 #include <string.h> /* for memcpy */
1095#else
1096 #define ECB_STDFP 0
1097#endif
1098
1099#ifndef ECB_NO_LIBM
1100
1101 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1102
1103 /* only the oldest of old doesn't have this one. solaris. */
1104 #ifdef INFINITY
1105 #define ECB_INFINITY INFINITY
1106 #else
1107 #define ECB_INFINITY HUGE_VAL
1108 #endif
1109
1110 #ifdef NAN
1111 #define ECB_NAN NAN
1112 #else
1113 #define ECB_NAN ECB_INFINITY
1114 #endif
1115
1116 /* converts an ieee half/binary16 to a float */
1117 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1118 ecb_function_ float
1119 ecb_binary16_to_float (uint16_t x)
1120 {
1121 int e = (x >> 10) & 0x1f;
1122 int m = x & 0x3ff;
1123 float r;
1124
1125 if (!e ) r = ldexpf (m , -24);
1126 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1127 else if (m ) r = ECB_NAN;
1128 else r = ECB_INFINITY;
1129
1130 return x & 0x8000 ? -r : r;
1131 }
1132
1133 /* convert a float to ieee single/binary32 */
1134 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1135 ecb_function_ uint32_t
1136 ecb_float_to_binary32 (float x)
1137 {
1138 uint32_t r;
1139
1140 #if ECB_STDFP
1141 memcpy (&r, &x, 4);
1142 #else
1143 /* slow emulation, works for anything but -0 */
1144 uint32_t m;
1145 int e;
1146
1147 if (x == 0e0f ) return 0x00000000U;
1148 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1149 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1150 if (x != x ) return 0x7fbfffffU;
1151
1152 m = frexpf (x, &e) * 0x1000000U;
1153
1154 r = m & 0x80000000U;
1155
1156 if (r)
1157 m = -m;
1158
1159 if (e <= -126)
1160 {
1161 m &= 0xffffffU;
1162 m >>= (-125 - e);
1163 e = -126;
1164 }
1165
1166 r |= (e + 126) << 23;
1167 r |= m & 0x7fffffU;
1168 #endif
1169
1170 return r;
1171 }
1172
1173 /* converts an ieee single/binary32 to a float */
1174 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1175 ecb_function_ float
1176 ecb_binary32_to_float (uint32_t x)
1177 {
1178 float r;
1179
1180 #if ECB_STDFP
1181 memcpy (&r, &x, 4);
1182 #else
1183 /* emulation, only works for normals and subnormals and +0 */
1184 int neg = x >> 31;
1185 int e = (x >> 23) & 0xffU;
1186
1187 x &= 0x7fffffU;
1188
1189 if (e)
1190 x |= 0x800000U;
1191 else
1192 e = 1;
1193
1194 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1195 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1196
1197 r = neg ? -r : r;
1198 #endif
1199
1200 return r;
1201 }
1202
1203 /* convert a double to ieee double/binary64 */
1204 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1205 ecb_function_ uint64_t
1206 ecb_double_to_binary64 (double x)
1207 {
1208 uint64_t r;
1209
1210 #if ECB_STDFP
1211 memcpy (&r, &x, 8);
1212 #else
1213 /* slow emulation, works for anything but -0 */
1214 uint64_t m;
1215 int e;
1216
1217 if (x == 0e0 ) return 0x0000000000000000U;
1218 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1219 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1220 if (x != x ) return 0X7ff7ffffffffffffU;
1221
1222 m = frexp (x, &e) * 0x20000000000000U;
1223
1224 r = m & 0x8000000000000000;;
1225
1226 if (r)
1227 m = -m;
1228
1229 if (e <= -1022)
1230 {
1231 m &= 0x1fffffffffffffU;
1232 m >>= (-1021 - e);
1233 e = -1022;
1234 }
1235
1236 r |= ((uint64_t)(e + 1022)) << 52;
1237 r |= m & 0xfffffffffffffU;
1238 #endif
1239
1240 return r;
1241 }
1242
1243 /* converts an ieee double/binary64 to a double */
1244 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1245 ecb_function_ double
1246 ecb_binary64_to_double (uint64_t x)
1247 {
1248 double r;
1249
1250 #if ECB_STDFP
1251 memcpy (&r, &x, 8);
1252 #else
1253 /* emulation, only works for normals and subnormals and +0 */
1254 int neg = x >> 63;
1255 int e = (x >> 52) & 0x7ffU;
1256
1257 x &= 0xfffffffffffffU;
1258
1259 if (e)
1260 x |= 0x10000000000000U;
1261 else
1262 e = 1;
1263
1264 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1265 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1266
1267 r = neg ? -r : r;
1268 #endif
1269
1270 return r;
1271 }
1272
1273#endif
1274
1275#endif
1276
1277/* ECB.H END */
1278
1279#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1280/* if your architecture doesn't need memory fences, e.g. because it is
1281 * single-cpu/core, or if you use libev in a project that doesn't use libev
1282 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1283 * libev, in which cases the memory fences become nops.
1284 * alternatively, you can remove this #error and link against libpthread,
1285 * which will then provide the memory fences.
1286 */
1287# error "memory fences not defined for your architecture, please report"
1288#endif
1289
1290#ifndef ECB_MEMORY_FENCE
1291# define ECB_MEMORY_FENCE do { } while (0)
1292# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1293# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1294#endif
1295
1296#define expect_false(cond) ecb_expect_false (cond)
1297#define expect_true(cond) ecb_expect_true (cond)
1298#define noinline ecb_noinline
1299
482#define inline_size static inline 1300#define inline_size ecb_inline
483 1301
484#if EV_FEATURE_CODE 1302#if EV_FEATURE_CODE
485# define inline_speed static inline 1303# define inline_speed ecb_inline
486#else 1304#else
487# define inline_speed static noinline 1305# define inline_speed static noinline
488#endif 1306#endif
489 1307
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1308#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
581 1399
582#ifdef __linux 1400#ifdef __linux
583# include <sys/utsname.h> 1401# include <sys/utsname.h>
584#endif 1402#endif
585 1403
586static unsigned int noinline 1404static unsigned int noinline ecb_cold
587ev_linux_version (void) 1405ev_linux_version (void)
588{ 1406{
589#ifdef __linux 1407#ifdef __linux
590 unsigned int v = 0; 1408 unsigned int v = 0;
591 struct utsname buf; 1409 struct utsname buf;
… …
620} 1438}
621 1439
622/*****************************************************************************/ 1440/*****************************************************************************/
623 1441
624#if EV_AVOID_STDIO 1442#if EV_AVOID_STDIO
625static void noinline 1443static void noinline ecb_cold
626ev_printerr (const char *msg) 1444ev_printerr (const char *msg)
627{ 1445{
628 write (STDERR_FILENO, msg, strlen (msg)); 1446 write (STDERR_FILENO, msg, strlen (msg));
629} 1447}
630#endif 1448#endif
631 1449
632static void (*syserr_cb)(const char *msg); 1450static void (*syserr_cb)(const char *msg) EV_THROW;
633 1451
634void 1452void ecb_cold
635ev_set_syserr_cb (void (*cb)(const char *msg)) 1453ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636{ 1454{
637 syserr_cb = cb; 1455 syserr_cb = cb;
638} 1456}
639 1457
640static void noinline 1458static void noinline ecb_cold
641ev_syserr (const char *msg) 1459ev_syserr (const char *msg)
642{ 1460{
643 if (!msg) 1461 if (!msg)
644 msg = "(libev) system error"; 1462 msg = "(libev) system error";
645 1463
… …
658 abort (); 1476 abort ();
659 } 1477 }
660} 1478}
661 1479
662static void * 1480static void *
663ev_realloc_emul (void *ptr, long size) 1481ev_realloc_emul (void *ptr, long size) EV_THROW
664{ 1482{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
668 /* some systems, notably openbsd and darwin, fail to properly 1483 /* some systems, notably openbsd and darwin, fail to properly
669 * implement realloc (x, 0) (as required by both ansi c-89 and 1484 * implement realloc (x, 0) (as required by both ansi c-89 and
670 * the single unix specification, so work around them here. 1485 * the single unix specification, so work around them here.
1486 * recently, also (at least) fedora and debian started breaking it,
1487 * despite documenting it otherwise.
671 */ 1488 */
672 1489
673 if (size) 1490 if (size)
674 return realloc (ptr, size); 1491 return realloc (ptr, size);
675 1492
676 free (ptr); 1493 free (ptr);
677 return 0; 1494 return 0;
678#endif
679} 1495}
680 1496
681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1497static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682 1498
683void 1499void ecb_cold
684ev_set_allocator (void *(*cb)(void *ptr, long size)) 1500ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685{ 1501{
686 alloc = cb; 1502 alloc = cb;
687} 1503}
688 1504
689inline_speed void * 1505inline_speed void *
… …
777 #undef VAR 1593 #undef VAR
778 }; 1594 };
779 #include "ev_wrap.h" 1595 #include "ev_wrap.h"
780 1596
781 static struct ev_loop default_loop_struct; 1597 static struct ev_loop default_loop_struct;
782 struct ev_loop *ev_default_loop_ptr; 1598 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
783 1599
784#else 1600#else
785 1601
786 ev_tstamp ev_rt_now; 1602 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
787 #define VAR(name,decl) static decl; 1603 #define VAR(name,decl) static decl;
788 #include "ev_vars.h" 1604 #include "ev_vars.h"
789 #undef VAR 1605 #undef VAR
790 1606
791 static int ev_default_loop_ptr; 1607 static int ev_default_loop_ptr;
… …
806 1622
807/*****************************************************************************/ 1623/*****************************************************************************/
808 1624
809#ifndef EV_HAVE_EV_TIME 1625#ifndef EV_HAVE_EV_TIME
810ev_tstamp 1626ev_tstamp
811ev_time (void) 1627ev_time (void) EV_THROW
812{ 1628{
813#if EV_USE_REALTIME 1629#if EV_USE_REALTIME
814 if (expect_true (have_realtime)) 1630 if (expect_true (have_realtime))
815 { 1631 {
816 struct timespec ts; 1632 struct timespec ts;
… …
840 return ev_time (); 1656 return ev_time ();
841} 1657}
842 1658
843#if EV_MULTIPLICITY 1659#if EV_MULTIPLICITY
844ev_tstamp 1660ev_tstamp
845ev_now (EV_P) 1661ev_now (EV_P) EV_THROW
846{ 1662{
847 return ev_rt_now; 1663 return ev_rt_now;
848} 1664}
849#endif 1665#endif
850 1666
851void 1667void
852ev_sleep (ev_tstamp delay) 1668ev_sleep (ev_tstamp delay) EV_THROW
853{ 1669{
854 if (delay > 0.) 1670 if (delay > 0.)
855 { 1671 {
856#if EV_USE_NANOSLEEP 1672#if EV_USE_NANOSLEEP
857 struct timespec ts; 1673 struct timespec ts;
858 1674
859 EV_TS_SET (ts, delay); 1675 EV_TS_SET (ts, delay);
860 nanosleep (&ts, 0); 1676 nanosleep (&ts, 0);
861#elif defined(_WIN32) 1677#elif defined _WIN32
862 Sleep ((unsigned long)(delay * 1e3)); 1678 Sleep ((unsigned long)(delay * 1e3));
863#else 1679#else
864 struct timeval tv; 1680 struct timeval tv;
865 1681
866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1682 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
885 1701
886 do 1702 do
887 ncur <<= 1; 1703 ncur <<= 1;
888 while (cnt > ncur); 1704 while (cnt > ncur);
889 1705
890 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1706 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
891 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1707 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
892 { 1708 {
893 ncur *= elem; 1709 ncur *= elem;
894 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1710 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
895 ncur = ncur - sizeof (void *) * 4; 1711 ncur = ncur - sizeof (void *) * 4;
… …
897 } 1713 }
898 1714
899 return ncur; 1715 return ncur;
900} 1716}
901 1717
902static noinline void * 1718static void * noinline ecb_cold
903array_realloc (int elem, void *base, int *cur, int cnt) 1719array_realloc (int elem, void *base, int *cur, int cnt)
904{ 1720{
905 *cur = array_nextsize (elem, *cur, cnt); 1721 *cur = array_nextsize (elem, *cur, cnt);
906 return ev_realloc (base, elem * *cur); 1722 return ev_realloc (base, elem * *cur);
907} 1723}
… …
910 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1726 memset ((void *)(base), 0, sizeof (*(base)) * (count))
911 1727
912#define array_needsize(type,base,cur,cnt,init) \ 1728#define array_needsize(type,base,cur,cnt,init) \
913 if (expect_false ((cnt) > (cur))) \ 1729 if (expect_false ((cnt) > (cur))) \
914 { \ 1730 { \
915 int ocur_ = (cur); \ 1731 int ecb_unused ocur_ = (cur); \
916 (base) = (type *)array_realloc \ 1732 (base) = (type *)array_realloc \
917 (sizeof (type), (base), &(cur), (cnt)); \ 1733 (sizeof (type), (base), &(cur), (cnt)); \
918 init ((base) + (ocur_), (cur) - ocur_); \ 1734 init ((base) + (ocur_), (cur) - ocur_); \
919 } 1735 }
920 1736
… …
938pendingcb (EV_P_ ev_prepare *w, int revents) 1754pendingcb (EV_P_ ev_prepare *w, int revents)
939{ 1755{
940} 1756}
941 1757
942void noinline 1758void noinline
943ev_feed_event (EV_P_ void *w, int revents) 1759ev_feed_event (EV_P_ void *w, int revents) EV_THROW
944{ 1760{
945 W w_ = (W)w; 1761 W w_ = (W)w;
946 int pri = ABSPRI (w_); 1762 int pri = ABSPRI (w_);
947 1763
948 if (expect_false (w_->pending)) 1764 if (expect_false (w_->pending))
… …
952 w_->pending = ++pendingcnt [pri]; 1768 w_->pending = ++pendingcnt [pri];
953 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1769 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
954 pendings [pri][w_->pending - 1].w = w_; 1770 pendings [pri][w_->pending - 1].w = w_;
955 pendings [pri][w_->pending - 1].events = revents; 1771 pendings [pri][w_->pending - 1].events = revents;
956 } 1772 }
1773
1774 pendingpri = NUMPRI - 1;
957} 1775}
958 1776
959inline_speed void 1777inline_speed void
960feed_reverse (EV_P_ W w) 1778feed_reverse (EV_P_ W w)
961{ 1779{
… …
1007 if (expect_true (!anfd->reify)) 1825 if (expect_true (!anfd->reify))
1008 fd_event_nocheck (EV_A_ fd, revents); 1826 fd_event_nocheck (EV_A_ fd, revents);
1009} 1827}
1010 1828
1011void 1829void
1012ev_feed_fd_event (EV_P_ int fd, int revents) 1830ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1013{ 1831{
1014 if (fd >= 0 && fd < anfdmax) 1832 if (fd >= 0 && fd < anfdmax)
1015 fd_event_nocheck (EV_A_ fd, revents); 1833 fd_event_nocheck (EV_A_ fd, revents);
1016} 1834}
1017 1835
… …
1090 fdchanges [fdchangecnt - 1] = fd; 1908 fdchanges [fdchangecnt - 1] = fd;
1091 } 1909 }
1092} 1910}
1093 1911
1094/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1912/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1095inline_speed void 1913inline_speed void ecb_cold
1096fd_kill (EV_P_ int fd) 1914fd_kill (EV_P_ int fd)
1097{ 1915{
1098 ev_io *w; 1916 ev_io *w;
1099 1917
1100 while ((w = (ev_io *)anfds [fd].head)) 1918 while ((w = (ev_io *)anfds [fd].head))
… …
1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1921 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1104 } 1922 }
1105} 1923}
1106 1924
1107/* check whether the given fd is actually valid, for error recovery */ 1925/* check whether the given fd is actually valid, for error recovery */
1108inline_size int 1926inline_size int ecb_cold
1109fd_valid (int fd) 1927fd_valid (int fd)
1110{ 1928{
1111#ifdef _WIN32 1929#ifdef _WIN32
1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1930 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1113#else 1931#else
1114 return fcntl (fd, F_GETFD) != -1; 1932 return fcntl (fd, F_GETFD) != -1;
1115#endif 1933#endif
1116} 1934}
1117 1935
1118/* called on EBADF to verify fds */ 1936/* called on EBADF to verify fds */
1119static void noinline 1937static void noinline ecb_cold
1120fd_ebadf (EV_P) 1938fd_ebadf (EV_P)
1121{ 1939{
1122 int fd; 1940 int fd;
1123 1941
1124 for (fd = 0; fd < anfdmax; ++fd) 1942 for (fd = 0; fd < anfdmax; ++fd)
… …
1126 if (!fd_valid (fd) && errno == EBADF) 1944 if (!fd_valid (fd) && errno == EBADF)
1127 fd_kill (EV_A_ fd); 1945 fd_kill (EV_A_ fd);
1128} 1946}
1129 1947
1130/* called on ENOMEM in select/poll to kill some fds and retry */ 1948/* called on ENOMEM in select/poll to kill some fds and retry */
1131static void noinline 1949static void noinline ecb_cold
1132fd_enomem (EV_P) 1950fd_enomem (EV_P)
1133{ 1951{
1134 int fd; 1952 int fd;
1135 1953
1136 for (fd = anfdmax; fd--; ) 1954 for (fd = anfdmax; fd--; )
… …
1331 2149
1332/*****************************************************************************/ 2150/*****************************************************************************/
1333 2151
1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2152#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1335 2153
1336static void noinline 2154static void noinline ecb_cold
1337evpipe_init (EV_P) 2155evpipe_init (EV_P)
1338{ 2156{
1339 if (!ev_is_active (&pipe_w)) 2157 if (!ev_is_active (&pipe_w))
1340 { 2158 {
2159 int fds [2];
2160
1341# if EV_USE_EVENTFD 2161# if EV_USE_EVENTFD
2162 fds [0] = -1;
1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2163 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1343 if (evfd < 0 && errno == EINVAL) 2164 if (fds [1] < 0 && errno == EINVAL)
1344 evfd = eventfd (0, 0); 2165 fds [1] = eventfd (0, 0);
1345 2166
1346 if (evfd >= 0) 2167 if (fds [1] < 0)
2168# endif
1347 { 2169 {
2170 while (pipe (fds))
2171 ev_syserr ("(libev) error creating signal/async pipe");
2172
2173 fd_intern (fds [0]);
2174 }
2175
1348 evpipe [0] = -1; 2176 evpipe [0] = fds [0];
1349 fd_intern (evfd); /* doing it twice doesn't hurt */ 2177
1350 ev_io_set (&pipe_w, evfd, EV_READ); 2178 if (evpipe [1] < 0)
2179 evpipe [1] = fds [1]; /* first call, set write fd */
2180 else
2181 {
2182 /* on subsequent calls, do not change evpipe [1] */
2183 /* so that evpipe_write can always rely on its value. */
2184 /* this branch does not do anything sensible on windows, */
2185 /* so must not be executed on windows */
2186
2187 dup2 (fds [1], evpipe [1]);
2188 close (fds [1]);
2189 }
2190
2191 fd_intern (evpipe [1]);
2192
2193 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2194 ev_io_start (EV_A_ &pipe_w);
2195 ev_unref (EV_A); /* watcher should not keep loop alive */
2196 }
2197}
2198
2199inline_speed void
2200evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2201{
2202 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2203
2204 if (expect_true (*flag))
2205 return;
2206
2207 *flag = 1;
2208 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2209
2210 pipe_write_skipped = 1;
2211
2212 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2213
2214 if (pipe_write_wanted)
2215 {
2216 int old_errno;
2217
2218 pipe_write_skipped = 0;
2219 ECB_MEMORY_FENCE_RELEASE;
2220
2221 old_errno = errno; /* save errno because write will clobber it */
2222
2223#if EV_USE_EVENTFD
2224 if (evpipe [0] < 0)
2225 {
2226 uint64_t counter = 1;
2227 write (evpipe [1], &counter, sizeof (uint64_t));
1351 } 2228 }
1352 else 2229 else
1353# endif 2230#endif
1354 { 2231 {
1355 while (pipe (evpipe)) 2232#ifdef _WIN32
1356 ev_syserr ("(libev) error creating signal/async pipe"); 2233 WSABUF buf;
1357 2234 DWORD sent;
1358 fd_intern (evpipe [0]); 2235 buf.buf = &buf;
1359 fd_intern (evpipe [1]); 2236 buf.len = 1;
1360 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2237 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2238#else
2239 write (evpipe [1], &(evpipe [1]), 1);
2240#endif
1361 } 2241 }
1362
1363 ev_io_start (EV_A_ &pipe_w);
1364 ev_unref (EV_A); /* watcher should not keep loop alive */
1365 }
1366}
1367
1368inline_size void
1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1370{
1371 if (!*flag)
1372 {
1373 int old_errno = errno; /* save errno because write might clobber it */
1374 char dummy;
1375
1376 *flag = 1;
1377
1378#if EV_USE_EVENTFD
1379 if (evfd >= 0)
1380 {
1381 uint64_t counter = 1;
1382 write (evfd, &counter, sizeof (uint64_t));
1383 }
1384 else
1385#endif
1386 /* win32 people keep sending patches that change this write() to send() */
1387 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1388 /* so when you think this write should be a send instead, please find out */
1389 /* where your send() is from - it's definitely not the microsoft send, and */
1390 /* tell me. thank you. */
1391 write (evpipe [1], &dummy, 1);
1392 2242
1393 errno = old_errno; 2243 errno = old_errno;
1394 } 2244 }
1395} 2245}
1396 2246
… …
1399static void 2249static void
1400pipecb (EV_P_ ev_io *iow, int revents) 2250pipecb (EV_P_ ev_io *iow, int revents)
1401{ 2251{
1402 int i; 2252 int i;
1403 2253
2254 if (revents & EV_READ)
2255 {
1404#if EV_USE_EVENTFD 2256#if EV_USE_EVENTFD
1405 if (evfd >= 0) 2257 if (evpipe [0] < 0)
1406 { 2258 {
1407 uint64_t counter; 2259 uint64_t counter;
1408 read (evfd, &counter, sizeof (uint64_t)); 2260 read (evpipe [1], &counter, sizeof (uint64_t));
1409 } 2261 }
1410 else 2262 else
1411#endif 2263#endif
1412 { 2264 {
1413 char dummy; 2265 char dummy[4];
1414 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2266#ifdef _WIN32
2267 WSABUF buf;
2268 DWORD recvd;
2269 DWORD flags = 0;
2270 buf.buf = dummy;
2271 buf.len = sizeof (dummy);
2272 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2273#else
1415 read (evpipe [0], &dummy, 1); 2274 read (evpipe [0], &dummy, sizeof (dummy));
2275#endif
2276 }
1416 } 2277 }
2278
2279 pipe_write_skipped = 0;
2280
2281 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1417 2282
1418#if EV_SIGNAL_ENABLE 2283#if EV_SIGNAL_ENABLE
1419 if (sig_pending) 2284 if (sig_pending)
1420 { 2285 {
1421 sig_pending = 0; 2286 sig_pending = 0;
2287
2288 ECB_MEMORY_FENCE;
1422 2289
1423 for (i = EV_NSIG - 1; i--; ) 2290 for (i = EV_NSIG - 1; i--; )
1424 if (expect_false (signals [i].pending)) 2291 if (expect_false (signals [i].pending))
1425 ev_feed_signal_event (EV_A_ i + 1); 2292 ev_feed_signal_event (EV_A_ i + 1);
1426 } 2293 }
… …
1428 2295
1429#if EV_ASYNC_ENABLE 2296#if EV_ASYNC_ENABLE
1430 if (async_pending) 2297 if (async_pending)
1431 { 2298 {
1432 async_pending = 0; 2299 async_pending = 0;
2300
2301 ECB_MEMORY_FENCE;
1433 2302
1434 for (i = asynccnt; i--; ) 2303 for (i = asynccnt; i--; )
1435 if (asyncs [i]->sent) 2304 if (asyncs [i]->sent)
1436 { 2305 {
1437 asyncs [i]->sent = 0; 2306 asyncs [i]->sent = 0;
2307 ECB_MEMORY_FENCE_RELEASE;
1438 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2308 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1439 } 2309 }
1440 } 2310 }
1441#endif 2311#endif
1442} 2312}
1443 2313
1444/*****************************************************************************/ 2314/*****************************************************************************/
1445 2315
1446void 2316void
1447ev_feed_signal (int signum) 2317ev_feed_signal (int signum) EV_THROW
1448{ 2318{
1449#if EV_MULTIPLICITY 2319#if EV_MULTIPLICITY
2320 EV_P;
2321 ECB_MEMORY_FENCE_ACQUIRE;
1450 EV_P = signals [signum - 1].loop; 2322 EV_A = signals [signum - 1].loop;
1451 2323
1452 if (!EV_A) 2324 if (!EV_A)
1453 return; 2325 return;
1454#endif 2326#endif
1455 2327
… …
1466 2338
1467 ev_feed_signal (signum); 2339 ev_feed_signal (signum);
1468} 2340}
1469 2341
1470void noinline 2342void noinline
1471ev_feed_signal_event (EV_P_ int signum) 2343ev_feed_signal_event (EV_P_ int signum) EV_THROW
1472{ 2344{
1473 WL w; 2345 WL w;
1474 2346
1475 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2347 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1476 return; 2348 return;
1477 2349
1478 --signum; 2350 --signum;
1479 2351
1480#if EV_MULTIPLICITY 2352#if EV_MULTIPLICITY
… …
1484 if (expect_false (signals [signum].loop != EV_A)) 2356 if (expect_false (signals [signum].loop != EV_A))
1485 return; 2357 return;
1486#endif 2358#endif
1487 2359
1488 signals [signum].pending = 0; 2360 signals [signum].pending = 0;
2361 ECB_MEMORY_FENCE_RELEASE;
1489 2362
1490 for (w = signals [signum].head; w; w = w->next) 2363 for (w = signals [signum].head; w; w = w->next)
1491 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2364 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1492} 2365}
1493 2366
… …
1591#endif 2464#endif
1592#if EV_USE_SELECT 2465#if EV_USE_SELECT
1593# include "ev_select.c" 2466# include "ev_select.c"
1594#endif 2467#endif
1595 2468
1596int 2469int ecb_cold
1597ev_version_major (void) 2470ev_version_major (void) EV_THROW
1598{ 2471{
1599 return EV_VERSION_MAJOR; 2472 return EV_VERSION_MAJOR;
1600} 2473}
1601 2474
1602int 2475int ecb_cold
1603ev_version_minor (void) 2476ev_version_minor (void) EV_THROW
1604{ 2477{
1605 return EV_VERSION_MINOR; 2478 return EV_VERSION_MINOR;
1606} 2479}
1607 2480
1608/* return true if we are running with elevated privileges and should ignore env variables */ 2481/* return true if we are running with elevated privileges and should ignore env variables */
1609int inline_size 2482int inline_size ecb_cold
1610enable_secure (void) 2483enable_secure (void)
1611{ 2484{
1612#ifdef _WIN32 2485#ifdef _WIN32
1613 return 0; 2486 return 0;
1614#else 2487#else
1615 return getuid () != geteuid () 2488 return getuid () != geteuid ()
1616 || getgid () != getegid (); 2489 || getgid () != getegid ();
1617#endif 2490#endif
1618} 2491}
1619 2492
1620unsigned int 2493unsigned int ecb_cold
1621ev_supported_backends (void) 2494ev_supported_backends (void) EV_THROW
1622{ 2495{
1623 unsigned int flags = 0; 2496 unsigned int flags = 0;
1624 2497
1625 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1626 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1629 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2502 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1630 2503
1631 return flags; 2504 return flags;
1632} 2505}
1633 2506
1634unsigned int 2507unsigned int ecb_cold
1635ev_recommended_backends (void) 2508ev_recommended_backends (void) EV_THROW
1636{ 2509{
1637 unsigned int flags = ev_supported_backends (); 2510 unsigned int flags = ev_supported_backends ();
1638 2511
1639#ifndef __NetBSD__ 2512#ifndef __NetBSD__
1640 /* kqueue is borked on everything but netbsd apparently */ 2513 /* kqueue is borked on everything but netbsd apparently */
… …
1651#endif 2524#endif
1652 2525
1653 return flags; 2526 return flags;
1654} 2527}
1655 2528
1656unsigned int 2529unsigned int ecb_cold
1657ev_embeddable_backends (void) 2530ev_embeddable_backends (void) EV_THROW
1658{ 2531{
1659 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1660 2533
1661 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1662 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2535 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1664 2537
1665 return flags; 2538 return flags;
1666} 2539}
1667 2540
1668unsigned int 2541unsigned int
1669ev_backend (EV_P) 2542ev_backend (EV_P) EV_THROW
1670{ 2543{
1671 return backend; 2544 return backend;
1672} 2545}
1673 2546
1674#if EV_FEATURE_API 2547#if EV_FEATURE_API
1675unsigned int 2548unsigned int
1676ev_iteration (EV_P) 2549ev_iteration (EV_P) EV_THROW
1677{ 2550{
1678 return loop_count; 2551 return loop_count;
1679} 2552}
1680 2553
1681unsigned int 2554unsigned int
1682ev_depth (EV_P) 2555ev_depth (EV_P) EV_THROW
1683{ 2556{
1684 return loop_depth; 2557 return loop_depth;
1685} 2558}
1686 2559
1687void 2560void
1688ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1689{ 2562{
1690 io_blocktime = interval; 2563 io_blocktime = interval;
1691} 2564}
1692 2565
1693void 2566void
1694ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1695{ 2568{
1696 timeout_blocktime = interval; 2569 timeout_blocktime = interval;
1697} 2570}
1698 2571
1699void 2572void
1700ev_set_userdata (EV_P_ void *data) 2573ev_set_userdata (EV_P_ void *data) EV_THROW
1701{ 2574{
1702 userdata = data; 2575 userdata = data;
1703} 2576}
1704 2577
1705void * 2578void *
1706ev_userdata (EV_P) 2579ev_userdata (EV_P) EV_THROW
1707{ 2580{
1708 return userdata; 2581 return userdata;
1709} 2582}
1710 2583
2584void
1711void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2585ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1712{ 2586{
1713 invoke_cb = invoke_pending_cb; 2587 invoke_cb = invoke_pending_cb;
1714} 2588}
1715 2589
1716void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2590void
2591ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1717{ 2592{
1718 release_cb = release; 2593 release_cb = release;
1719 acquire_cb = acquire; 2594 acquire_cb = acquire;
1720} 2595}
1721#endif 2596#endif
1722 2597
1723/* initialise a loop structure, must be zero-initialised */ 2598/* initialise a loop structure, must be zero-initialised */
1724static void noinline 2599static void noinline ecb_cold
1725loop_init (EV_P_ unsigned int flags) 2600loop_init (EV_P_ unsigned int flags) EV_THROW
1726{ 2601{
1727 if (!backend) 2602 if (!backend)
1728 { 2603 {
1729 origflags = flags; 2604 origflags = flags;
1730 2605
… …
1757 if (!(flags & EVFLAG_NOENV) 2632 if (!(flags & EVFLAG_NOENV)
1758 && !enable_secure () 2633 && !enable_secure ()
1759 && getenv ("LIBEV_FLAGS")) 2634 && getenv ("LIBEV_FLAGS"))
1760 flags = atoi (getenv ("LIBEV_FLAGS")); 2635 flags = atoi (getenv ("LIBEV_FLAGS"));
1761 2636
1762 ev_rt_now = ev_time (); 2637 ev_rt_now = ev_time ();
1763 mn_now = get_clock (); 2638 mn_now = get_clock ();
1764 now_floor = mn_now; 2639 now_floor = mn_now;
1765 rtmn_diff = ev_rt_now - mn_now; 2640 rtmn_diff = ev_rt_now - mn_now;
1766#if EV_FEATURE_API 2641#if EV_FEATURE_API
1767 invoke_cb = ev_invoke_pending; 2642 invoke_cb = ev_invoke_pending;
1768#endif 2643#endif
1769 2644
1770 io_blocktime = 0.; 2645 io_blocktime = 0.;
1771 timeout_blocktime = 0.; 2646 timeout_blocktime = 0.;
1772 backend = 0; 2647 backend = 0;
1773 backend_fd = -1; 2648 backend_fd = -1;
1774 sig_pending = 0; 2649 sig_pending = 0;
1775#if EV_ASYNC_ENABLE 2650#if EV_ASYNC_ENABLE
1776 async_pending = 0; 2651 async_pending = 0;
1777#endif 2652#endif
2653 pipe_write_skipped = 0;
2654 pipe_write_wanted = 0;
2655 evpipe [0] = -1;
2656 evpipe [1] = -1;
1778#if EV_USE_INOTIFY 2657#if EV_USE_INOTIFY
1779 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2658 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1780#endif 2659#endif
1781#if EV_USE_SIGNALFD 2660#if EV_USE_SIGNALFD
1782 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2661 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1783#endif 2662#endif
1784 2663
1785 if (!(flags & EVBACKEND_MASK)) 2664 if (!(flags & EVBACKEND_MASK))
1786 flags |= ev_recommended_backends (); 2665 flags |= ev_recommended_backends ();
1787 2666
… …
1812#endif 2691#endif
1813 } 2692 }
1814} 2693}
1815 2694
1816/* free up a loop structure */ 2695/* free up a loop structure */
1817void 2696void ecb_cold
1818ev_loop_destroy (EV_P) 2697ev_loop_destroy (EV_P)
1819{ 2698{
1820 int i; 2699 int i;
1821 2700
1822#if EV_MULTIPLICITY 2701#if EV_MULTIPLICITY
… …
1833 EV_INVOKE_PENDING; 2712 EV_INVOKE_PENDING;
1834 } 2713 }
1835#endif 2714#endif
1836 2715
1837#if EV_CHILD_ENABLE 2716#if EV_CHILD_ENABLE
1838 if (ev_is_active (&childev)) 2717 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1839 { 2718 {
1840 ev_ref (EV_A); /* child watcher */ 2719 ev_ref (EV_A); /* child watcher */
1841 ev_signal_stop (EV_A_ &childev); 2720 ev_signal_stop (EV_A_ &childev);
1842 } 2721 }
1843#endif 2722#endif
… …
1845 if (ev_is_active (&pipe_w)) 2724 if (ev_is_active (&pipe_w))
1846 { 2725 {
1847 /*ev_ref (EV_A);*/ 2726 /*ev_ref (EV_A);*/
1848 /*ev_io_stop (EV_A_ &pipe_w);*/ 2727 /*ev_io_stop (EV_A_ &pipe_w);*/
1849 2728
1850#if EV_USE_EVENTFD
1851 if (evfd >= 0)
1852 close (evfd);
1853#endif
1854
1855 if (evpipe [0] >= 0)
1856 {
1857 EV_WIN32_CLOSE_FD (evpipe [0]); 2729 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1858 EV_WIN32_CLOSE_FD (evpipe [1]); 2730 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1859 }
1860 } 2731 }
1861 2732
1862#if EV_USE_SIGNALFD 2733#if EV_USE_SIGNALFD
1863 if (ev_is_active (&sigfd_w)) 2734 if (ev_is_active (&sigfd_w))
1864 close (sigfd); 2735 close (sigfd);
… …
1950#endif 2821#endif
1951#if EV_USE_INOTIFY 2822#if EV_USE_INOTIFY
1952 infy_fork (EV_A); 2823 infy_fork (EV_A);
1953#endif 2824#endif
1954 2825
2826#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1955 if (ev_is_active (&pipe_w)) 2827 if (ev_is_active (&pipe_w))
1956 { 2828 {
1957 /* this "locks" the handlers against writing to the pipe */ 2829 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1958 /* while we modify the fd vars */
1959 sig_pending = 1;
1960#if EV_ASYNC_ENABLE
1961 async_pending = 1;
1962#endif
1963 2830
1964 ev_ref (EV_A); 2831 ev_ref (EV_A);
1965 ev_io_stop (EV_A_ &pipe_w); 2832 ev_io_stop (EV_A_ &pipe_w);
1966 2833
1967#if EV_USE_EVENTFD
1968 if (evfd >= 0)
1969 close (evfd);
1970#endif
1971
1972 if (evpipe [0] >= 0) 2834 if (evpipe [0] >= 0)
1973 {
1974 EV_WIN32_CLOSE_FD (evpipe [0]); 2835 EV_WIN32_CLOSE_FD (evpipe [0]);
1975 EV_WIN32_CLOSE_FD (evpipe [1]);
1976 }
1977 2836
1978#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1979 evpipe_init (EV_A); 2837 evpipe_init (EV_A);
1980 /* now iterate over everything, in case we missed something */ 2838 /* iterate over everything, in case we missed something before */
1981 pipecb (EV_A_ &pipe_w, EV_READ); 2839 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1982#endif
1983 } 2840 }
2841#endif
1984 2842
1985 postfork = 0; 2843 postfork = 0;
1986} 2844}
1987 2845
1988#if EV_MULTIPLICITY 2846#if EV_MULTIPLICITY
1989 2847
1990struct ev_loop * 2848struct ev_loop * ecb_cold
1991ev_loop_new (unsigned int flags) 2849ev_loop_new (unsigned int flags) EV_THROW
1992{ 2850{
1993 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2851 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1994 2852
1995 memset (EV_A, 0, sizeof (struct ev_loop)); 2853 memset (EV_A, 0, sizeof (struct ev_loop));
1996 loop_init (EV_A_ flags); 2854 loop_init (EV_A_ flags);
… …
2003} 2861}
2004 2862
2005#endif /* multiplicity */ 2863#endif /* multiplicity */
2006 2864
2007#if EV_VERIFY 2865#if EV_VERIFY
2008static void noinline 2866static void noinline ecb_cold
2009verify_watcher (EV_P_ W w) 2867verify_watcher (EV_P_ W w)
2010{ 2868{
2011 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2869 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2012 2870
2013 if (w->pending) 2871 if (w->pending)
2014 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2872 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2015} 2873}
2016 2874
2017static void noinline 2875static void noinline ecb_cold
2018verify_heap (EV_P_ ANHE *heap, int N) 2876verify_heap (EV_P_ ANHE *heap, int N)
2019{ 2877{
2020 int i; 2878 int i;
2021 2879
2022 for (i = HEAP0; i < N + HEAP0; ++i) 2880 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2027 2885
2028 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2886 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2029 } 2887 }
2030} 2888}
2031 2889
2032static void noinline 2890static void noinline ecb_cold
2033array_verify (EV_P_ W *ws, int cnt) 2891array_verify (EV_P_ W *ws, int cnt)
2034{ 2892{
2035 while (cnt--) 2893 while (cnt--)
2036 { 2894 {
2037 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2895 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2039 } 2897 }
2040} 2898}
2041#endif 2899#endif
2042 2900
2043#if EV_FEATURE_API 2901#if EV_FEATURE_API
2044void 2902void ecb_cold
2045ev_verify (EV_P) 2903ev_verify (EV_P) EV_THROW
2046{ 2904{
2047#if EV_VERIFY 2905#if EV_VERIFY
2048 int i; 2906 int i;
2049 WL w; 2907 WL w, w2;
2050 2908
2051 assert (activecnt >= -1); 2909 assert (activecnt >= -1);
2052 2910
2053 assert (fdchangemax >= fdchangecnt); 2911 assert (fdchangemax >= fdchangecnt);
2054 for (i = 0; i < fdchangecnt; ++i) 2912 for (i = 0; i < fdchangecnt; ++i)
2055 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2913 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2056 2914
2057 assert (anfdmax >= 0); 2915 assert (anfdmax >= 0);
2058 for (i = 0; i < anfdmax; ++i) 2916 for (i = 0; i < anfdmax; ++i)
2917 {
2918 int j = 0;
2919
2059 for (w = anfds [i].head; w; w = w->next) 2920 for (w = w2 = anfds [i].head; w; w = w->next)
2060 { 2921 {
2061 verify_watcher (EV_A_ (W)w); 2922 verify_watcher (EV_A_ (W)w);
2923
2924 if (j++ & 1)
2925 {
2926 assert (("libev: io watcher list contains a loop", w != w2));
2927 w2 = w2->next;
2928 }
2929
2062 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2930 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2063 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2931 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2064 } 2932 }
2933 }
2065 2934
2066 assert (timermax >= timercnt); 2935 assert (timermax >= timercnt);
2067 verify_heap (EV_A_ timers, timercnt); 2936 verify_heap (EV_A_ timers, timercnt);
2068 2937
2069#if EV_PERIODIC_ENABLE 2938#if EV_PERIODIC_ENABLE
… …
2115#endif 2984#endif
2116} 2985}
2117#endif 2986#endif
2118 2987
2119#if EV_MULTIPLICITY 2988#if EV_MULTIPLICITY
2120struct ev_loop * 2989struct ev_loop * ecb_cold
2121#else 2990#else
2122int 2991int
2123#endif 2992#endif
2124ev_default_loop (unsigned int flags) 2993ev_default_loop (unsigned int flags) EV_THROW
2125{ 2994{
2126 if (!ev_default_loop_ptr) 2995 if (!ev_default_loop_ptr)
2127 { 2996 {
2128#if EV_MULTIPLICITY 2997#if EV_MULTIPLICITY
2129 EV_P = ev_default_loop_ptr = &default_loop_struct; 2998 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2148 3017
2149 return ev_default_loop_ptr; 3018 return ev_default_loop_ptr;
2150} 3019}
2151 3020
2152void 3021void
2153ev_loop_fork (EV_P) 3022ev_loop_fork (EV_P) EV_THROW
2154{ 3023{
2155 postfork = 1; /* must be in line with ev_default_fork */ 3024 postfork = 1;
2156} 3025}
2157 3026
2158/*****************************************************************************/ 3027/*****************************************************************************/
2159 3028
2160void 3029void
… …
2162{ 3031{
2163 EV_CB_INVOKE ((W)w, revents); 3032 EV_CB_INVOKE ((W)w, revents);
2164} 3033}
2165 3034
2166unsigned int 3035unsigned int
2167ev_pending_count (EV_P) 3036ev_pending_count (EV_P) EV_THROW
2168{ 3037{
2169 int pri; 3038 int pri;
2170 unsigned int count = 0; 3039 unsigned int count = 0;
2171 3040
2172 for (pri = NUMPRI; pri--; ) 3041 for (pri = NUMPRI; pri--; )
… …
2176} 3045}
2177 3046
2178void noinline 3047void noinline
2179ev_invoke_pending (EV_P) 3048ev_invoke_pending (EV_P)
2180{ 3049{
2181 int pri; 3050 pendingpri = NUMPRI;
2182 3051
2183 for (pri = NUMPRI; pri--; ) 3052 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3053 {
3054 --pendingpri;
3055
2184 while (pendingcnt [pri]) 3056 while (pendingcnt [pendingpri])
2185 { 3057 {
2186 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3058 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2187 3059
2188 p->w->pending = 0; 3060 p->w->pending = 0;
2189 EV_CB_INVOKE (p->w, p->events); 3061 EV_CB_INVOKE (p->w, p->events);
2190 EV_FREQUENT_CHECK; 3062 EV_FREQUENT_CHECK;
2191 } 3063 }
3064 }
2192} 3065}
2193 3066
2194#if EV_IDLE_ENABLE 3067#if EV_IDLE_ENABLE
2195/* make idle watchers pending. this handles the "call-idle */ 3068/* make idle watchers pending. this handles the "call-idle */
2196/* only when higher priorities are idle" logic */ 3069/* only when higher priorities are idle" logic */
… …
2286{ 3159{
2287 EV_FREQUENT_CHECK; 3160 EV_FREQUENT_CHECK;
2288 3161
2289 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3162 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2290 { 3163 {
2291 int feed_count = 0;
2292
2293 do 3164 do
2294 { 3165 {
2295 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3166 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2296 3167
2297 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3168 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2324 } 3195 }
2325} 3196}
2326 3197
2327/* simply recalculate all periodics */ 3198/* simply recalculate all periodics */
2328/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3199/* TODO: maybe ensure that at least one event happens when jumping forward? */
2329static void noinline 3200static void noinline ecb_cold
2330periodics_reschedule (EV_P) 3201periodics_reschedule (EV_P)
2331{ 3202{
2332 int i; 3203 int i;
2333 3204
2334 /* adjust periodics after time jump */ 3205 /* adjust periodics after time jump */
… …
2347 reheap (periodics, periodiccnt); 3218 reheap (periodics, periodiccnt);
2348} 3219}
2349#endif 3220#endif
2350 3221
2351/* adjust all timers by a given offset */ 3222/* adjust all timers by a given offset */
2352static void noinline 3223static void noinline ecb_cold
2353timers_reschedule (EV_P_ ev_tstamp adjust) 3224timers_reschedule (EV_P_ ev_tstamp adjust)
2354{ 3225{
2355 int i; 3226 int i;
2356 3227
2357 for (i = 0; i < timercnt; ++i) 3228 for (i = 0; i < timercnt; ++i)
… …
2431 3302
2432 mn_now = ev_rt_now; 3303 mn_now = ev_rt_now;
2433 } 3304 }
2434} 3305}
2435 3306
2436void 3307int
2437ev_run (EV_P_ int flags) 3308ev_run (EV_P_ int flags)
2438{ 3309{
2439#if EV_FEATURE_API 3310#if EV_FEATURE_API
2440 ++loop_depth; 3311 ++loop_depth;
2441#endif 3312#endif
… …
2499 ev_tstamp prev_mn_now = mn_now; 3370 ev_tstamp prev_mn_now = mn_now;
2500 3371
2501 /* update time to cancel out callback processing overhead */ 3372 /* update time to cancel out callback processing overhead */
2502 time_update (EV_A_ 1e100); 3373 time_update (EV_A_ 1e100);
2503 3374
3375 /* from now on, we want a pipe-wake-up */
3376 pipe_write_wanted = 1;
3377
3378 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3379
2504 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3380 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2505 { 3381 {
2506 waittime = MAX_BLOCKTIME; 3382 waittime = MAX_BLOCKTIME;
2507 3383
2508 if (timercnt) 3384 if (timercnt)
2509 { 3385 {
2510 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3386 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2511 if (waittime > to) waittime = to; 3387 if (waittime > to) waittime = to;
2512 } 3388 }
2513 3389
2514#if EV_PERIODIC_ENABLE 3390#if EV_PERIODIC_ENABLE
2515 if (periodiccnt) 3391 if (periodiccnt)
2516 { 3392 {
2517 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3393 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2518 if (waittime > to) waittime = to; 3394 if (waittime > to) waittime = to;
2519 } 3395 }
2520#endif 3396#endif
2521 3397
2522 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3398 /* don't let timeouts decrease the waittime below timeout_blocktime */
2523 if (expect_false (waittime < timeout_blocktime)) 3399 if (expect_false (waittime < timeout_blocktime))
2524 waittime = timeout_blocktime; 3400 waittime = timeout_blocktime;
3401
3402 /* at this point, we NEED to wait, so we have to ensure */
3403 /* to pass a minimum nonzero value to the backend */
3404 if (expect_false (waittime < backend_mintime))
3405 waittime = backend_mintime;
2525 3406
2526 /* extra check because io_blocktime is commonly 0 */ 3407 /* extra check because io_blocktime is commonly 0 */
2527 if (expect_false (io_blocktime)) 3408 if (expect_false (io_blocktime))
2528 { 3409 {
2529 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3410 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2530 3411
2531 if (sleeptime > waittime - backend_fudge) 3412 if (sleeptime > waittime - backend_mintime)
2532 sleeptime = waittime - backend_fudge; 3413 sleeptime = waittime - backend_mintime;
2533 3414
2534 if (expect_true (sleeptime > 0.)) 3415 if (expect_true (sleeptime > 0.))
2535 { 3416 {
2536 ev_sleep (sleeptime); 3417 ev_sleep (sleeptime);
2537 waittime -= sleeptime; 3418 waittime -= sleeptime;
… …
2544#endif 3425#endif
2545 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3426 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2546 backend_poll (EV_A_ waittime); 3427 backend_poll (EV_A_ waittime);
2547 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3428 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2548 3429
3430 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3431
3432 ECB_MEMORY_FENCE_ACQUIRE;
3433 if (pipe_write_skipped)
3434 {
3435 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3436 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3437 }
3438
3439
2549 /* update ev_rt_now, do magic */ 3440 /* update ev_rt_now, do magic */
2550 time_update (EV_A_ waittime + sleeptime); 3441 time_update (EV_A_ waittime + sleeptime);
2551 } 3442 }
2552 3443
2553 /* queue pending timers and reschedule them */ 3444 /* queue pending timers and reschedule them */
… …
2579 loop_done = EVBREAK_CANCEL; 3470 loop_done = EVBREAK_CANCEL;
2580 3471
2581#if EV_FEATURE_API 3472#if EV_FEATURE_API
2582 --loop_depth; 3473 --loop_depth;
2583#endif 3474#endif
3475
3476 return activecnt;
2584} 3477}
2585 3478
2586void 3479void
2587ev_break (EV_P_ int how) 3480ev_break (EV_P_ int how) EV_THROW
2588{ 3481{
2589 loop_done = how; 3482 loop_done = how;
2590} 3483}
2591 3484
2592void 3485void
2593ev_ref (EV_P) 3486ev_ref (EV_P) EV_THROW
2594{ 3487{
2595 ++activecnt; 3488 ++activecnt;
2596} 3489}
2597 3490
2598void 3491void
2599ev_unref (EV_P) 3492ev_unref (EV_P) EV_THROW
2600{ 3493{
2601 --activecnt; 3494 --activecnt;
2602} 3495}
2603 3496
2604void 3497void
2605ev_now_update (EV_P) 3498ev_now_update (EV_P) EV_THROW
2606{ 3499{
2607 time_update (EV_A_ 1e100); 3500 time_update (EV_A_ 1e100);
2608} 3501}
2609 3502
2610void 3503void
2611ev_suspend (EV_P) 3504ev_suspend (EV_P) EV_THROW
2612{ 3505{
2613 ev_now_update (EV_A); 3506 ev_now_update (EV_A);
2614} 3507}
2615 3508
2616void 3509void
2617ev_resume (EV_P) 3510ev_resume (EV_P) EV_THROW
2618{ 3511{
2619 ev_tstamp mn_prev = mn_now; 3512 ev_tstamp mn_prev = mn_now;
2620 3513
2621 ev_now_update (EV_A); 3514 ev_now_update (EV_A);
2622 timers_reschedule (EV_A_ mn_now - mn_prev); 3515 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2661 w->pending = 0; 3554 w->pending = 0;
2662 } 3555 }
2663} 3556}
2664 3557
2665int 3558int
2666ev_clear_pending (EV_P_ void *w) 3559ev_clear_pending (EV_P_ void *w) EV_THROW
2667{ 3560{
2668 W w_ = (W)w; 3561 W w_ = (W)w;
2669 int pending = w_->pending; 3562 int pending = w_->pending;
2670 3563
2671 if (expect_true (pending)) 3564 if (expect_true (pending))
… …
2704} 3597}
2705 3598
2706/*****************************************************************************/ 3599/*****************************************************************************/
2707 3600
2708void noinline 3601void noinline
2709ev_io_start (EV_P_ ev_io *w) 3602ev_io_start (EV_P_ ev_io *w) EV_THROW
2710{ 3603{
2711 int fd = w->fd; 3604 int fd = w->fd;
2712 3605
2713 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
2714 return; 3607 return;
… …
2720 3613
2721 ev_start (EV_A_ (W)w, 1); 3614 ev_start (EV_A_ (W)w, 1);
2722 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3615 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2723 wlist_add (&anfds[fd].head, (WL)w); 3616 wlist_add (&anfds[fd].head, (WL)w);
2724 3617
3618 /* common bug, apparently */
3619 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3620
2725 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3621 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2726 w->events &= ~EV__IOFDSET; 3622 w->events &= ~EV__IOFDSET;
2727 3623
2728 EV_FREQUENT_CHECK; 3624 EV_FREQUENT_CHECK;
2729} 3625}
2730 3626
2731void noinline 3627void noinline
2732ev_io_stop (EV_P_ ev_io *w) 3628ev_io_stop (EV_P_ ev_io *w) EV_THROW
2733{ 3629{
2734 clear_pending (EV_A_ (W)w); 3630 clear_pending (EV_A_ (W)w);
2735 if (expect_false (!ev_is_active (w))) 3631 if (expect_false (!ev_is_active (w)))
2736 return; 3632 return;
2737 3633
… …
2746 3642
2747 EV_FREQUENT_CHECK; 3643 EV_FREQUENT_CHECK;
2748} 3644}
2749 3645
2750void noinline 3646void noinline
2751ev_timer_start (EV_P_ ev_timer *w) 3647ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2752{ 3648{
2753 if (expect_false (ev_is_active (w))) 3649 if (expect_false (ev_is_active (w)))
2754 return; 3650 return;
2755 3651
2756 ev_at (w) += mn_now; 3652 ev_at (w) += mn_now;
… …
2770 3666
2771 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3667 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2772} 3668}
2773 3669
2774void noinline 3670void noinline
2775ev_timer_stop (EV_P_ ev_timer *w) 3671ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2776{ 3672{
2777 clear_pending (EV_A_ (W)w); 3673 clear_pending (EV_A_ (W)w);
2778 if (expect_false (!ev_is_active (w))) 3674 if (expect_false (!ev_is_active (w)))
2779 return; 3675 return;
2780 3676
… …
2800 3696
2801 EV_FREQUENT_CHECK; 3697 EV_FREQUENT_CHECK;
2802} 3698}
2803 3699
2804void noinline 3700void noinline
2805ev_timer_again (EV_P_ ev_timer *w) 3701ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2806{ 3702{
2807 EV_FREQUENT_CHECK; 3703 EV_FREQUENT_CHECK;
3704
3705 clear_pending (EV_A_ (W)w);
2808 3706
2809 if (ev_is_active (w)) 3707 if (ev_is_active (w))
2810 { 3708 {
2811 if (w->repeat) 3709 if (w->repeat)
2812 { 3710 {
… …
2825 3723
2826 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
2827} 3725}
2828 3726
2829ev_tstamp 3727ev_tstamp
2830ev_timer_remaining (EV_P_ ev_timer *w) 3728ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2831{ 3729{
2832 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3730 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2833} 3731}
2834 3732
2835#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
2836void noinline 3734void noinline
2837ev_periodic_start (EV_P_ ev_periodic *w) 3735ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2838{ 3736{
2839 if (expect_false (ev_is_active (w))) 3737 if (expect_false (ev_is_active (w)))
2840 return; 3738 return;
2841 3739
2842 if (w->reschedule_cb) 3740 if (w->reschedule_cb)
… …
2862 3760
2863 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3761 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2864} 3762}
2865 3763
2866void noinline 3764void noinline
2867ev_periodic_stop (EV_P_ ev_periodic *w) 3765ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2868{ 3766{
2869 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
2870 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
2871 return; 3769 return;
2872 3770
… …
2890 3788
2891 EV_FREQUENT_CHECK; 3789 EV_FREQUENT_CHECK;
2892} 3790}
2893 3791
2894void noinline 3792void noinline
2895ev_periodic_again (EV_P_ ev_periodic *w) 3793ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2896{ 3794{
2897 /* TODO: use adjustheap and recalculation */ 3795 /* TODO: use adjustheap and recalculation */
2898 ev_periodic_stop (EV_A_ w); 3796 ev_periodic_stop (EV_A_ w);
2899 ev_periodic_start (EV_A_ w); 3797 ev_periodic_start (EV_A_ w);
2900} 3798}
… …
2905#endif 3803#endif
2906 3804
2907#if EV_SIGNAL_ENABLE 3805#if EV_SIGNAL_ENABLE
2908 3806
2909void noinline 3807void noinline
2910ev_signal_start (EV_P_ ev_signal *w) 3808ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2911{ 3809{
2912 if (expect_false (ev_is_active (w))) 3810 if (expect_false (ev_is_active (w)))
2913 return; 3811 return;
2914 3812
2915 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3813 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2917#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
2918 assert (("libev: a signal must not be attached to two different loops", 3816 assert (("libev: a signal must not be attached to two different loops",
2919 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3817 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2920 3818
2921 signals [w->signum - 1].loop = EV_A; 3819 signals [w->signum - 1].loop = EV_A;
3820 ECB_MEMORY_FENCE_RELEASE;
2922#endif 3821#endif
2923 3822
2924 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
2925 3824
2926#if EV_USE_SIGNALFD 3825#if EV_USE_SIGNALFD
… …
2986 3885
2987 EV_FREQUENT_CHECK; 3886 EV_FREQUENT_CHECK;
2988} 3887}
2989 3888
2990void noinline 3889void noinline
2991ev_signal_stop (EV_P_ ev_signal *w) 3890ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2992{ 3891{
2993 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
2994 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
2995 return; 3894 return;
2996 3895
… …
3027#endif 3926#endif
3028 3927
3029#if EV_CHILD_ENABLE 3928#if EV_CHILD_ENABLE
3030 3929
3031void 3930void
3032ev_child_start (EV_P_ ev_child *w) 3931ev_child_start (EV_P_ ev_child *w) EV_THROW
3033{ 3932{
3034#if EV_MULTIPLICITY 3933#if EV_MULTIPLICITY
3035 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3036#endif 3935#endif
3037 if (expect_false (ev_is_active (w))) 3936 if (expect_false (ev_is_active (w)))
… …
3044 3943
3045 EV_FREQUENT_CHECK; 3944 EV_FREQUENT_CHECK;
3046} 3945}
3047 3946
3048void 3947void
3049ev_child_stop (EV_P_ ev_child *w) 3948ev_child_stop (EV_P_ ev_child *w) EV_THROW
3050{ 3949{
3051 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
3052 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
3053 return; 3952 return;
3054 3953
… …
3081# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3082 3981
3083static void noinline 3982static void noinline
3084infy_add (EV_P_ ev_stat *w) 3983infy_add (EV_P_ ev_stat *w)
3085{ 3984{
3086 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3985 w->wd = inotify_add_watch (fs_fd, w->path,
3986 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3987 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3988 | IN_DONT_FOLLOW | IN_MASK_ADD);
3087 3989
3088 if (w->wd >= 0) 3990 if (w->wd >= 0)
3089 { 3991 {
3090 struct statfs sfs; 3992 struct statfs sfs;
3091 3993
… …
3095 3997
3096 if (!fs_2625) 3998 if (!fs_2625)
3097 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3999 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3098 else if (!statfs (w->path, &sfs) 4000 else if (!statfs (w->path, &sfs)
3099 && (sfs.f_type == 0x1373 /* devfs */ 4001 && (sfs.f_type == 0x1373 /* devfs */
4002 || sfs.f_type == 0x4006 /* fat */
4003 || sfs.f_type == 0x4d44 /* msdos */
3100 || sfs.f_type == 0xEF53 /* ext2/3 */ 4004 || sfs.f_type == 0xEF53 /* ext2/3 */
4005 || sfs.f_type == 0x72b6 /* jffs2 */
4006 || sfs.f_type == 0x858458f6 /* ramfs */
4007 || sfs.f_type == 0x5346544e /* ntfs */
3101 || sfs.f_type == 0x3153464a /* jfs */ 4008 || sfs.f_type == 0x3153464a /* jfs */
4009 || sfs.f_type == 0x9123683e /* btrfs */
3102 || sfs.f_type == 0x52654973 /* reiser3 */ 4010 || sfs.f_type == 0x52654973 /* reiser3 */
3103 || sfs.f_type == 0x01021994 /* tempfs */ 4011 || sfs.f_type == 0x01021994 /* tmpfs */
3104 || sfs.f_type == 0x58465342 /* xfs */)) 4012 || sfs.f_type == 0x58465342 /* xfs */))
3105 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4013 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3106 else 4014 else
3107 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4015 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3108 } 4016 }
… …
3206 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4114 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3207 ofs += sizeof (struct inotify_event) + ev->len; 4115 ofs += sizeof (struct inotify_event) + ev->len;
3208 } 4116 }
3209} 4117}
3210 4118
3211inline_size void 4119inline_size void ecb_cold
3212ev_check_2625 (EV_P) 4120ev_check_2625 (EV_P)
3213{ 4121{
3214 /* kernels < 2.6.25 are borked 4122 /* kernels < 2.6.25 are borked
3215 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4123 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3216 */ 4124 */
… …
3221} 4129}
3222 4130
3223inline_size int 4131inline_size int
3224infy_newfd (void) 4132infy_newfd (void)
3225{ 4133{
3226#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4134#if defined IN_CLOEXEC && defined IN_NONBLOCK
3227 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4135 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3228 if (fd >= 0) 4136 if (fd >= 0)
3229 return fd; 4137 return fd;
3230#endif 4138#endif
3231 return inotify_init (); 4139 return inotify_init ();
… …
3306#else 4214#else
3307# define EV_LSTAT(p,b) lstat (p, b) 4215# define EV_LSTAT(p,b) lstat (p, b)
3308#endif 4216#endif
3309 4217
3310void 4218void
3311ev_stat_stat (EV_P_ ev_stat *w) 4219ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3312{ 4220{
3313 if (lstat (w->path, &w->attr) < 0) 4221 if (lstat (w->path, &w->attr) < 0)
3314 w->attr.st_nlink = 0; 4222 w->attr.st_nlink = 0;
3315 else if (!w->attr.st_nlink) 4223 else if (!w->attr.st_nlink)
3316 w->attr.st_nlink = 1; 4224 w->attr.st_nlink = 1;
… …
3355 ev_feed_event (EV_A_ w, EV_STAT); 4263 ev_feed_event (EV_A_ w, EV_STAT);
3356 } 4264 }
3357} 4265}
3358 4266
3359void 4267void
3360ev_stat_start (EV_P_ ev_stat *w) 4268ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3361{ 4269{
3362 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3363 return; 4271 return;
3364 4272
3365 ev_stat_stat (EV_A_ w); 4273 ev_stat_stat (EV_A_ w);
… …
3386 4294
3387 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3388} 4296}
3389 4297
3390void 4298void
3391ev_stat_stop (EV_P_ ev_stat *w) 4299ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3392{ 4300{
3393 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3394 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3395 return; 4303 return;
3396 4304
… …
3412} 4320}
3413#endif 4321#endif
3414 4322
3415#if EV_IDLE_ENABLE 4323#if EV_IDLE_ENABLE
3416void 4324void
3417ev_idle_start (EV_P_ ev_idle *w) 4325ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3418{ 4326{
3419 if (expect_false (ev_is_active (w))) 4327 if (expect_false (ev_is_active (w)))
3420 return; 4328 return;
3421 4329
3422 pri_adjust (EV_A_ (W)w); 4330 pri_adjust (EV_A_ (W)w);
… …
3435 4343
3436 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3437} 4345}
3438 4346
3439void 4347void
3440ev_idle_stop (EV_P_ ev_idle *w) 4348ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3441{ 4349{
3442 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3443 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3444 return; 4352 return;
3445 4353
… …
3459} 4367}
3460#endif 4368#endif
3461 4369
3462#if EV_PREPARE_ENABLE 4370#if EV_PREPARE_ENABLE
3463void 4371void
3464ev_prepare_start (EV_P_ ev_prepare *w) 4372ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3465{ 4373{
3466 if (expect_false (ev_is_active (w))) 4374 if (expect_false (ev_is_active (w)))
3467 return; 4375 return;
3468 4376
3469 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
… …
3474 4382
3475 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
3476} 4384}
3477 4385
3478void 4386void
3479ev_prepare_stop (EV_P_ ev_prepare *w) 4387ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3480{ 4388{
3481 clear_pending (EV_A_ (W)w); 4389 clear_pending (EV_A_ (W)w);
3482 if (expect_false (!ev_is_active (w))) 4390 if (expect_false (!ev_is_active (w)))
3483 return; 4391 return;
3484 4392
… …
3497} 4405}
3498#endif 4406#endif
3499 4407
3500#if EV_CHECK_ENABLE 4408#if EV_CHECK_ENABLE
3501void 4409void
3502ev_check_start (EV_P_ ev_check *w) 4410ev_check_start (EV_P_ ev_check *w) EV_THROW
3503{ 4411{
3504 if (expect_false (ev_is_active (w))) 4412 if (expect_false (ev_is_active (w)))
3505 return; 4413 return;
3506 4414
3507 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
… …
3512 4420
3513 EV_FREQUENT_CHECK; 4421 EV_FREQUENT_CHECK;
3514} 4422}
3515 4423
3516void 4424void
3517ev_check_stop (EV_P_ ev_check *w) 4425ev_check_stop (EV_P_ ev_check *w) EV_THROW
3518{ 4426{
3519 clear_pending (EV_A_ (W)w); 4427 clear_pending (EV_A_ (W)w);
3520 if (expect_false (!ev_is_active (w))) 4428 if (expect_false (!ev_is_active (w)))
3521 return; 4429 return;
3522 4430
… …
3535} 4443}
3536#endif 4444#endif
3537 4445
3538#if EV_EMBED_ENABLE 4446#if EV_EMBED_ENABLE
3539void noinline 4447void noinline
3540ev_embed_sweep (EV_P_ ev_embed *w) 4448ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3541{ 4449{
3542 ev_run (w->other, EVRUN_NOWAIT); 4450 ev_run (w->other, EVRUN_NOWAIT);
3543} 4451}
3544 4452
3545static void 4453static void
… …
3593 ev_idle_stop (EV_A_ idle); 4501 ev_idle_stop (EV_A_ idle);
3594} 4502}
3595#endif 4503#endif
3596 4504
3597void 4505void
3598ev_embed_start (EV_P_ ev_embed *w) 4506ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3599{ 4507{
3600 if (expect_false (ev_is_active (w))) 4508 if (expect_false (ev_is_active (w)))
3601 return; 4509 return;
3602 4510
3603 { 4511 {
… …
3624 4532
3625 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
3626} 4534}
3627 4535
3628void 4536void
3629ev_embed_stop (EV_P_ ev_embed *w) 4537ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3630{ 4538{
3631 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
3632 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
3633 return; 4541 return;
3634 4542
… …
3644} 4552}
3645#endif 4553#endif
3646 4554
3647#if EV_FORK_ENABLE 4555#if EV_FORK_ENABLE
3648void 4556void
3649ev_fork_start (EV_P_ ev_fork *w) 4557ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3650{ 4558{
3651 if (expect_false (ev_is_active (w))) 4559 if (expect_false (ev_is_active (w)))
3652 return; 4560 return;
3653 4561
3654 EV_FREQUENT_CHECK; 4562 EV_FREQUENT_CHECK;
… …
3659 4567
3660 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3661} 4569}
3662 4570
3663void 4571void
3664ev_fork_stop (EV_P_ ev_fork *w) 4572ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3665{ 4573{
3666 clear_pending (EV_A_ (W)w); 4574 clear_pending (EV_A_ (W)w);
3667 if (expect_false (!ev_is_active (w))) 4575 if (expect_false (!ev_is_active (w)))
3668 return; 4576 return;
3669 4577
… …
3682} 4590}
3683#endif 4591#endif
3684 4592
3685#if EV_CLEANUP_ENABLE 4593#if EV_CLEANUP_ENABLE
3686void 4594void
3687ev_cleanup_start (EV_P_ ev_cleanup *w) 4595ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3688{ 4596{
3689 if (expect_false (ev_is_active (w))) 4597 if (expect_false (ev_is_active (w)))
3690 return; 4598 return;
3691 4599
3692 EV_FREQUENT_CHECK; 4600 EV_FREQUENT_CHECK;
… …
3699 ev_unref (EV_A); 4607 ev_unref (EV_A);
3700 EV_FREQUENT_CHECK; 4608 EV_FREQUENT_CHECK;
3701} 4609}
3702 4610
3703void 4611void
3704ev_cleanup_stop (EV_P_ ev_cleanup *w) 4612ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3705{ 4613{
3706 clear_pending (EV_A_ (W)w); 4614 clear_pending (EV_A_ (W)w);
3707 if (expect_false (!ev_is_active (w))) 4615 if (expect_false (!ev_is_active (w)))
3708 return; 4616 return;
3709 4617
… …
3723} 4631}
3724#endif 4632#endif
3725 4633
3726#if EV_ASYNC_ENABLE 4634#if EV_ASYNC_ENABLE
3727void 4635void
3728ev_async_start (EV_P_ ev_async *w) 4636ev_async_start (EV_P_ ev_async *w) EV_THROW
3729{ 4637{
3730 if (expect_false (ev_is_active (w))) 4638 if (expect_false (ev_is_active (w)))
3731 return; 4639 return;
3732 4640
3733 w->sent = 0; 4641 w->sent = 0;
… …
3742 4650
3743 EV_FREQUENT_CHECK; 4651 EV_FREQUENT_CHECK;
3744} 4652}
3745 4653
3746void 4654void
3747ev_async_stop (EV_P_ ev_async *w) 4655ev_async_stop (EV_P_ ev_async *w) EV_THROW
3748{ 4656{
3749 clear_pending (EV_A_ (W)w); 4657 clear_pending (EV_A_ (W)w);
3750 if (expect_false (!ev_is_active (w))) 4658 if (expect_false (!ev_is_active (w)))
3751 return; 4659 return;
3752 4660
… …
3763 4671
3764 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3765} 4673}
3766 4674
3767void 4675void
3768ev_async_send (EV_P_ ev_async *w) 4676ev_async_send (EV_P_ ev_async *w) EV_THROW
3769{ 4677{
3770 w->sent = 1; 4678 w->sent = 1;
3771 evpipe_write (EV_A_ &async_pending); 4679 evpipe_write (EV_A_ &async_pending);
3772} 4680}
3773#endif 4681#endif
… …
3810 4718
3811 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4719 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3812} 4720}
3813 4721
3814void 4722void
3815ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4723ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3816{ 4724{
3817 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4725 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3818 4726
3819 if (expect_false (!once)) 4727 if (expect_false (!once))
3820 { 4728 {
… …
3841} 4749}
3842 4750
3843/*****************************************************************************/ 4751/*****************************************************************************/
3844 4752
3845#if EV_WALK_ENABLE 4753#if EV_WALK_ENABLE
3846void 4754void ecb_cold
3847ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4755ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3848{ 4756{
3849 int i, j; 4757 int i, j;
3850 ev_watcher_list *wl, *wn; 4758 ev_watcher_list *wl, *wn;
3851 4759
3852 if (types & (EV_IO | EV_EMBED)) 4760 if (types & (EV_IO | EV_EMBED))
… …
3895 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4803 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3896#endif 4804#endif
3897 4805
3898#if EV_IDLE_ENABLE 4806#if EV_IDLE_ENABLE
3899 if (types & EV_IDLE) 4807 if (types & EV_IDLE)
3900 for (j = NUMPRI; i--; ) 4808 for (j = NUMPRI; j--; )
3901 for (i = idlecnt [j]; i--; ) 4809 for (i = idlecnt [j]; i--; )
3902 cb (EV_A_ EV_IDLE, idles [j][i]); 4810 cb (EV_A_ EV_IDLE, idles [j][i]);
3903#endif 4811#endif
3904 4812
3905#if EV_FORK_ENABLE 4813#if EV_FORK_ENABLE
… …
3958 4866
3959#if EV_MULTIPLICITY 4867#if EV_MULTIPLICITY
3960 #include "ev_wrap.h" 4868 #include "ev_wrap.h"
3961#endif 4869#endif
3962 4870
3963EV_CPP(})
3964

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