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Comparing libev/ev.c (file contents):
Revision 1.389 by root, Wed Aug 3 15:31:23 2011 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 2013 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 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# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
… …
250# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
251# endif 261# endif
252#endif 262#endif
253 263
254#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 267# else
258# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
259# endif 269# endif
260#endif 270#endif
… …
347 357
348#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 360#endif
351 361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* 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. */ 379/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 381# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
360# else 386# else
… …
363# endif 389# endif
364#endif 390#endif
365 391
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 393
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 394#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
377#endif 397#endif
378 398
… …
386# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
387#endif 407#endif
388 408
389#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 411# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 412# include <sys/select.h>
393# endif 413# endif
394#endif 414#endif
395 415
396#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
403# endif 423# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 424#endif
409 425
410#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 428# include <stdint.h>
… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 481
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 482#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) 483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 484
469/* the following are taken from libecb */ 485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010002
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
529 #if __GNUC__
530 typedef signed long long int64_t;
531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
545#else
546 #include <inttypes.h>
547 #if UINTMAX_MAX > 0xffffffffU
548 #define ECB_PTRSIZE 8
549 #else
550 #define ECB_PTRSIZE 4
551 #endif
552#endif
471 553
472/* many compilers define _GNUC_ to some versions but then only implement 554/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 555 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 556 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 557 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 558 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place. 559 * an issue with that they should have done it right in the first place.
478 */ 560 */
479#ifndef ECB_GCC_VERSION 561#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 563 #define ECB_GCC_VERSION(major,minor) 0
482 #else 564 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif 566 #endif
485#endif 567#endif
568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
486 711
487#if __cplusplus 712#if __cplusplus
488 #define ecb_inline static inline 713 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 714#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 715 #define ecb_inline static __inline__
… …
492 #define ecb_inline static inline 717 #define ecb_inline static inline
493#else 718#else
494 #define ecb_inline static 719 #define ecb_inline static
495#endif 720#endif
496 721
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5) 722#if ECB_GCC_VERSION(3,3)
499 #if __x86 723 #define ecb_restrict __restrict__
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 724#elif ECB_C99
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 725 #define ecb_restrict restrict
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ 726#else
503 #elif __amd64 727 #define ecb_restrict
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
508 #endif 728#endif
509#endif
510 729
511#ifndef ECB_MEMORY_FENCE 730typedef int ecb_bool;
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400 /* VC++ 2005 */
517 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
518 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
519 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
520 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
521 #elif defined(_WIN32)
522 #include <WinNT.h>
523 #define ECB_MEMORY_FENCE MemoryBarrier ()
524 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
525 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
526 #endif
527#endif
528 731
529#ifndef ECB_MEMORY_FENCE 732#define ECB_CONCAT_(a, b) a ## b
530 #include <pthread.h> 733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
531 736
532 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 737#define ecb_function_ ecb_inline
533 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
534 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
535 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
536#endif
537 738
538#if ECB_GCC_VERSION(3,1) 739#if ECB_GCC_VERSION(3,1)
539 #define ecb_attribute(attrlist) __attribute__(attrlist) 740 #define ecb_attribute(attrlist) __attribute__(attrlist)
540 #define ecb_is_constant(expr) __builtin_constant_p (expr) 741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
541 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
… …
545 #define ecb_is_constant(expr) 0 746 #define ecb_is_constant(expr) 0
546 #define ecb_expect(expr,value) (expr) 747 #define ecb_expect(expr,value) (expr)
547 #define ecb_prefetch(addr,rw,locality) 748 #define ecb_prefetch(addr,rw,locality)
548#endif 749#endif
549 750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
550#define ecb_noinline ecb_attribute ((__noinline__)) 758#define ecb_noinline ecb_attribute ((__noinline__))
551#define ecb_noreturn ecb_attribute ((__noreturn__))
552#define ecb_unused ecb_attribute ((__unused__)) 759#define ecb_unused ecb_attribute ((__unused__))
553#define ecb_const ecb_attribute ((__const__)) 760#define ecb_const ecb_attribute ((__const__))
554#define ecb_pure ecb_attribute ((__pure__)) 761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
555 768
556#if ECB_GCC_VERSION(4,3) 769#if ECB_GCC_VERSION(4,3)
557 #define ecb_artificial ecb_attribute ((__artificial__)) 770 #define ecb_artificial ecb_attribute ((__artificial__))
558 #define ecb_hot ecb_attribute ((__hot__)) 771 #define ecb_hot ecb_attribute ((__hot__))
559 #define ecb_cold ecb_attribute ((__cold__)) 772 #define ecb_cold ecb_attribute ((__cold__))
… …
566/* put around conditional expressions if you are very sure that the */ 779/* put around conditional expressions if you are very sure that the */
567/* expression is mostly true or mostly false. note that these return */ 780/* expression is mostly true or mostly false. note that these return */
568/* booleans, not the expression. */ 781/* booleans, not the expression. */
569#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
570#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
571/* ecb.h end */ 784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
572 1219
573#define expect_false(cond) ecb_expect_false (cond) 1220#define expect_false(cond) ecb_expect_false (cond)
574#define expect_true(cond) ecb_expect_true (cond) 1221#define expect_true(cond) ecb_expect_true (cond)
575#define noinline ecb_noinline 1222#define noinline ecb_noinline
576 1223
… …
722{ 1369{
723 write (STDERR_FILENO, msg, strlen (msg)); 1370 write (STDERR_FILENO, msg, strlen (msg));
724} 1371}
725#endif 1372#endif
726 1373
727static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
728 1375
729void ecb_cold 1376void ecb_cold
730ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
731{ 1378{
732 syserr_cb = cb; 1379 syserr_cb = cb;
733} 1380}
734 1381
735static void noinline ecb_cold 1382static void noinline ecb_cold
… …
753 abort (); 1400 abort ();
754 } 1401 }
755} 1402}
756 1403
757static void * 1404static void *
758ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
759{ 1406{
760#if __GLIBC__
761 return realloc (ptr, size);
762#else
763 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
764 * implement realloc (x, 0) (as required by both ansi c-89 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
765 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
766 */ 1412 */
767 1413
768 if (size) 1414 if (size)
769 return realloc (ptr, size); 1415 return realloc (ptr, size);
770 1416
771 free (ptr); 1417 free (ptr);
772 return 0; 1418 return 0;
773#endif
774} 1419}
775 1420
776static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
777 1422
778void ecb_cold 1423void ecb_cold
779ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
780{ 1425{
781 alloc = cb; 1426 alloc = cb;
782} 1427}
783 1428
784inline_speed void * 1429inline_speed void *
… …
872 #undef VAR 1517 #undef VAR
873 }; 1518 };
874 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
875 1520
876 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
877 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
878 1523
879#else 1524#else
880 1525
881 ev_tstamp ev_rt_now; 1526 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
882 #define VAR(name,decl) static decl; 1527 #define VAR(name,decl) static decl;
883 #include "ev_vars.h" 1528 #include "ev_vars.h"
884 #undef VAR 1529 #undef VAR
885 1530
886 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
… …
901 1546
902/*****************************************************************************/ 1547/*****************************************************************************/
903 1548
904#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
905ev_tstamp 1550ev_tstamp
906ev_time (void) 1551ev_time (void) EV_THROW
907{ 1552{
908#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
909 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
910 { 1555 {
911 struct timespec ts; 1556 struct timespec ts;
… …
935 return ev_time (); 1580 return ev_time ();
936} 1581}
937 1582
938#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
939ev_tstamp 1584ev_tstamp
940ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
941{ 1586{
942 return ev_rt_now; 1587 return ev_rt_now;
943} 1588}
944#endif 1589#endif
945 1590
946void 1591void
947ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
948{ 1593{
949 if (delay > 0.) 1594 if (delay > 0.)
950 { 1595 {
951#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
952 struct timespec ts; 1597 struct timespec ts;
953 1598
954 EV_TS_SET (ts, delay); 1599 EV_TS_SET (ts, delay);
955 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
956#elif defined(_WIN32) 1601#elif defined _WIN32
957 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
958#else 1603#else
959 struct timeval tv; 1604 struct timeval tv;
960 1605
961 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
980 1625
981 do 1626 do
982 ncur <<= 1; 1627 ncur <<= 1;
983 while (cnt > ncur); 1628 while (cnt > ncur);
984 1629
985 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
986 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
987 { 1632 {
988 ncur *= elem; 1633 ncur *= elem;
989 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
990 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
… …
1033pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
1034{ 1679{
1035} 1680}
1036 1681
1037void noinline 1682void noinline
1038ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1039{ 1684{
1040 W w_ = (W)w; 1685 W w_ = (W)w;
1041 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
1042 1687
1043 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
… …
1047 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
1048 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1049 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
1050 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
1051 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
1052} 1699}
1053 1700
1054inline_speed void 1701inline_speed void
1055feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
1056{ 1703{
… …
1102 if (expect_true (!anfd->reify)) 1749 if (expect_true (!anfd->reify))
1103 fd_event_nocheck (EV_A_ fd, revents); 1750 fd_event_nocheck (EV_A_ fd, revents);
1104} 1751}
1105 1752
1106void 1753void
1107ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1108{ 1755{
1109 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
1110 fd_event_nocheck (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
1111} 1758}
1112 1759
… …
1431static void noinline ecb_cold 2078static void noinline ecb_cold
1432evpipe_init (EV_P) 2079evpipe_init (EV_P)
1433{ 2080{
1434 if (!ev_is_active (&pipe_w)) 2081 if (!ev_is_active (&pipe_w))
1435 { 2082 {
2083 int fds [2];
2084
1436# if EV_USE_EVENTFD 2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
1437 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1438 if (evfd < 0 && errno == EINVAL) 2088 if (fds [1] < 0 && errno == EINVAL)
1439 evfd = eventfd (0, 0); 2089 fds [1] = eventfd (0, 0);
1440 2090
1441 if (evfd >= 0) 2091 if (fds [1] < 0)
2092# endif
1442 { 2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
1443 evpipe [0] = -1; 2102 evpipe [0] = fds [0];
1444 fd_intern (evfd); /* doing it twice doesn't hurt */ 2103
1445 ev_io_set (&pipe_w, evfd, EV_READ); 2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
2123inline_speed void
2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2125{
2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2127
2128 if (expect_true (*flag))
2129 return;
2130
2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
2147#if EV_USE_EVENTFD
2148 if (evpipe [0] < 0)
2149 {
2150 uint64_t counter = 1;
2151 write (evpipe [1], &counter, sizeof (uint64_t));
1446 } 2152 }
1447 else 2153 else
1448# endif 2154#endif
1449 { 2155 {
1450 while (pipe (evpipe)) 2156#ifdef _WIN32
1451 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1452 2158 DWORD sent;
1453 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1454 fd_intern (evpipe [1]); 2160 buf.len = 1;
1455 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1456 } 2162#else
1457
1458 ev_io_start (EV_A_ &pipe_w);
1459 ev_unref (EV_A); /* watcher should not keep loop alive */
1460 }
1461}
1462
1463inline_speed void
1464evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1465{
1466 if (expect_true (*flag))
1467 return;
1468
1469 *flag = 1;
1470
1471 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1472
1473 pipe_write_skipped = 1;
1474
1475 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1476
1477 if (pipe_write_wanted)
1478 {
1479 int old_errno;
1480
1481 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1482
1483 old_errno = errno; /* save errno because write will clobber it */
1484
1485#if EV_USE_EVENTFD
1486 if (evfd >= 0)
1487 {
1488 uint64_t counter = 1;
1489 write (evfd, &counter, sizeof (uint64_t));
1490 }
1491 else
1492#endif
1493 {
1494 /* win32 people keep sending patches that change this write() to send() */
1495 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1496 /* so when you think this write should be a send instead, please find out */
1497 /* where your send() is from - it's definitely not the microsoft send, and */
1498 /* tell me. thank you. */
1499 write (evpipe [1], &(evpipe [1]), 1); 2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1500 } 2165 }
1501 2166
1502 errno = old_errno; 2167 errno = old_errno;
1503 } 2168 }
1504} 2169}
… …
1511 int i; 2176 int i;
1512 2177
1513 if (revents & EV_READ) 2178 if (revents & EV_READ)
1514 { 2179 {
1515#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1516 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1517 { 2182 {
1518 uint64_t counter; 2183 uint64_t counter;
1519 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1520 } 2185 }
1521 else 2186 else
1522#endif 2187#endif
1523 { 2188 {
1524 char dummy; 2189 char dummy[4];
1525 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1526 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
1527 } 2200 }
1528 } 2201 }
1529 2202
1530 pipe_write_skipped = 0; 2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1531 2206
1532#if EV_SIGNAL_ENABLE 2207#if EV_SIGNAL_ENABLE
1533 if (sig_pending) 2208 if (sig_pending)
1534 { 2209 {
1535 sig_pending = 0; 2210 sig_pending = 0;
2211
2212 ECB_MEMORY_FENCE;
1536 2213
1537 for (i = EV_NSIG - 1; i--; ) 2214 for (i = EV_NSIG - 1; i--; )
1538 if (expect_false (signals [i].pending)) 2215 if (expect_false (signals [i].pending))
1539 ev_feed_signal_event (EV_A_ i + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1540 } 2217 }
… …
1542 2219
1543#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1544 if (async_pending) 2221 if (async_pending)
1545 { 2222 {
1546 async_pending = 0; 2223 async_pending = 0;
2224
2225 ECB_MEMORY_FENCE;
1547 2226
1548 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1549 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1550 { 2229 {
1551 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1552 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1553 } 2233 }
1554 } 2234 }
1555#endif 2235#endif
1556} 2236}
1557 2237
1558/*****************************************************************************/ 2238/*****************************************************************************/
1559 2239
1560void 2240void
1561ev_feed_signal (int signum) 2241ev_feed_signal (int signum) EV_THROW
1562{ 2242{
1563#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
2244 EV_P;
2245 ECB_MEMORY_FENCE_ACQUIRE;
1564 EV_P = signals [signum - 1].loop; 2246 EV_A = signals [signum - 1].loop;
1565 2247
1566 if (!EV_A) 2248 if (!EV_A)
1567 return; 2249 return;
1568#endif 2250#endif
1569 2251
1570 if (!ev_active (&pipe_w))
1571 return;
1572
1573 signals [signum - 1].pending = 1; 2252 signals [signum - 1].pending = 1;
1574 evpipe_write (EV_A_ &sig_pending); 2253 evpipe_write (EV_A_ &sig_pending);
1575} 2254}
1576 2255
1577static void 2256static void
… …
1583 2262
1584 ev_feed_signal (signum); 2263 ev_feed_signal (signum);
1585} 2264}
1586 2265
1587void noinline 2266void noinline
1588ev_feed_signal_event (EV_P_ int signum) 2267ev_feed_signal_event (EV_P_ int signum) EV_THROW
1589{ 2268{
1590 WL w; 2269 WL w;
1591 2270
1592 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2271 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1593 return; 2272 return;
1594 2273
1595 --signum; 2274 --signum;
1596 2275
1597#if EV_MULTIPLICITY 2276#if EV_MULTIPLICITY
… …
1601 if (expect_false (signals [signum].loop != EV_A)) 2280 if (expect_false (signals [signum].loop != EV_A))
1602 return; 2281 return;
1603#endif 2282#endif
1604 2283
1605 signals [signum].pending = 0; 2284 signals [signum].pending = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1606 2286
1607 for (w = signals [signum].head; w; w = w->next) 2287 for (w = signals [signum].head; w; w = w->next)
1608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2288 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1609} 2289}
1610 2290
… …
1709#if EV_USE_SELECT 2389#if EV_USE_SELECT
1710# include "ev_select.c" 2390# include "ev_select.c"
1711#endif 2391#endif
1712 2392
1713int ecb_cold 2393int ecb_cold
1714ev_version_major (void) 2394ev_version_major (void) EV_THROW
1715{ 2395{
1716 return EV_VERSION_MAJOR; 2396 return EV_VERSION_MAJOR;
1717} 2397}
1718 2398
1719int ecb_cold 2399int ecb_cold
1720ev_version_minor (void) 2400ev_version_minor (void) EV_THROW
1721{ 2401{
1722 return EV_VERSION_MINOR; 2402 return EV_VERSION_MINOR;
1723} 2403}
1724 2404
1725/* return true if we are running with elevated privileges and should ignore env variables */ 2405/* return true if we are running with elevated privileges and should ignore env variables */
… …
1733 || getgid () != getegid (); 2413 || getgid () != getegid ();
1734#endif 2414#endif
1735} 2415}
1736 2416
1737unsigned int ecb_cold 2417unsigned int ecb_cold
1738ev_supported_backends (void) 2418ev_supported_backends (void) EV_THROW
1739{ 2419{
1740 unsigned int flags = 0; 2420 unsigned int flags = 0;
1741 2421
1742 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2422 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1743 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2423 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1747 2427
1748 return flags; 2428 return flags;
1749} 2429}
1750 2430
1751unsigned int ecb_cold 2431unsigned int ecb_cold
1752ev_recommended_backends (void) 2432ev_recommended_backends (void) EV_THROW
1753{ 2433{
1754 unsigned int flags = ev_supported_backends (); 2434 unsigned int flags = ev_supported_backends ();
1755 2435
1756#ifndef __NetBSD__ 2436#ifndef __NetBSD__
1757 /* kqueue is borked on everything but netbsd apparently */ 2437 /* kqueue is borked on everything but netbsd apparently */
… …
1769 2449
1770 return flags; 2450 return flags;
1771} 2451}
1772 2452
1773unsigned int ecb_cold 2453unsigned int ecb_cold
1774ev_embeddable_backends (void) 2454ev_embeddable_backends (void) EV_THROW
1775{ 2455{
1776 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2456 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1777 2457
1778 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2458 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1779 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2459 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1781 2461
1782 return flags; 2462 return flags;
1783} 2463}
1784 2464
1785unsigned int 2465unsigned int
1786ev_backend (EV_P) 2466ev_backend (EV_P) EV_THROW
1787{ 2467{
1788 return backend; 2468 return backend;
1789} 2469}
1790 2470
1791#if EV_FEATURE_API 2471#if EV_FEATURE_API
1792unsigned int 2472unsigned int
1793ev_iteration (EV_P) 2473ev_iteration (EV_P) EV_THROW
1794{ 2474{
1795 return loop_count; 2475 return loop_count;
1796} 2476}
1797 2477
1798unsigned int 2478unsigned int
1799ev_depth (EV_P) 2479ev_depth (EV_P) EV_THROW
1800{ 2480{
1801 return loop_depth; 2481 return loop_depth;
1802} 2482}
1803 2483
1804void 2484void
1805ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2485ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1806{ 2486{
1807 io_blocktime = interval; 2487 io_blocktime = interval;
1808} 2488}
1809 2489
1810void 2490void
1811ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2491ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1812{ 2492{
1813 timeout_blocktime = interval; 2493 timeout_blocktime = interval;
1814} 2494}
1815 2495
1816void 2496void
1817ev_set_userdata (EV_P_ void *data) 2497ev_set_userdata (EV_P_ void *data) EV_THROW
1818{ 2498{
1819 userdata = data; 2499 userdata = data;
1820} 2500}
1821 2501
1822void * 2502void *
1823ev_userdata (EV_P) 2503ev_userdata (EV_P) EV_THROW
1824{ 2504{
1825 return userdata; 2505 return userdata;
1826} 2506}
1827 2507
1828void 2508void
1829ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2509ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1830{ 2510{
1831 invoke_cb = invoke_pending_cb; 2511 invoke_cb = invoke_pending_cb;
1832} 2512}
1833 2513
1834void 2514void
1835ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2515ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1836{ 2516{
1837 release_cb = release; 2517 release_cb = release;
1838 acquire_cb = acquire; 2518 acquire_cb = acquire;
1839} 2519}
1840#endif 2520#endif
1841 2521
1842/* initialise a loop structure, must be zero-initialised */ 2522/* initialise a loop structure, must be zero-initialised */
1843static void noinline ecb_cold 2523static void noinline ecb_cold
1844loop_init (EV_P_ unsigned int flags) 2524loop_init (EV_P_ unsigned int flags) EV_THROW
1845{ 2525{
1846 if (!backend) 2526 if (!backend)
1847 { 2527 {
1848 origflags = flags; 2528 origflags = flags;
1849 2529
… …
1894#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1895 async_pending = 0; 2575 async_pending = 0;
1896#endif 2576#endif
1897 pipe_write_skipped = 0; 2577 pipe_write_skipped = 0;
1898 pipe_write_wanted = 0; 2578 pipe_write_wanted = 0;
2579 evpipe [0] = -1;
2580 evpipe [1] = -1;
1899#if EV_USE_INOTIFY 2581#if EV_USE_INOTIFY
1900 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1901#endif 2583#endif
1902#if EV_USE_SIGNALFD 2584#if EV_USE_SIGNALFD
1903 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2585 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1954 EV_INVOKE_PENDING; 2636 EV_INVOKE_PENDING;
1955 } 2637 }
1956#endif 2638#endif
1957 2639
1958#if EV_CHILD_ENABLE 2640#if EV_CHILD_ENABLE
1959 if (ev_is_active (&childev)) 2641 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1960 { 2642 {
1961 ev_ref (EV_A); /* child watcher */ 2643 ev_ref (EV_A); /* child watcher */
1962 ev_signal_stop (EV_A_ &childev); 2644 ev_signal_stop (EV_A_ &childev);
1963 } 2645 }
1964#endif 2646#endif
… …
1966 if (ev_is_active (&pipe_w)) 2648 if (ev_is_active (&pipe_w))
1967 { 2649 {
1968 /*ev_ref (EV_A);*/ 2650 /*ev_ref (EV_A);*/
1969 /*ev_io_stop (EV_A_ &pipe_w);*/ 2651 /*ev_io_stop (EV_A_ &pipe_w);*/
1970 2652
1971#if EV_USE_EVENTFD
1972 if (evfd >= 0)
1973 close (evfd);
1974#endif
1975
1976 if (evpipe [0] >= 0)
1977 {
1978 EV_WIN32_CLOSE_FD (evpipe [0]); 2653 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1979 EV_WIN32_CLOSE_FD (evpipe [1]); 2654 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1980 }
1981 } 2655 }
1982 2656
1983#if EV_USE_SIGNALFD 2657#if EV_USE_SIGNALFD
1984 if (ev_is_active (&sigfd_w)) 2658 if (ev_is_active (&sigfd_w))
1985 close (sigfd); 2659 close (sigfd);
… …
2071#endif 2745#endif
2072#if EV_USE_INOTIFY 2746#if EV_USE_INOTIFY
2073 infy_fork (EV_A); 2747 infy_fork (EV_A);
2074#endif 2748#endif
2075 2749
2750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2076 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
2077 { 2752 {
2078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2753 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2079 2754
2080 ev_ref (EV_A); 2755 ev_ref (EV_A);
2081 ev_io_stop (EV_A_ &pipe_w); 2756 ev_io_stop (EV_A_ &pipe_w);
2082 2757
2083#if EV_USE_EVENTFD
2084 if (evfd >= 0)
2085 close (evfd);
2086#endif
2087
2088 if (evpipe [0] >= 0) 2758 if (evpipe [0] >= 0)
2089 {
2090 EV_WIN32_CLOSE_FD (evpipe [0]); 2759 EV_WIN32_CLOSE_FD (evpipe [0]);
2091 EV_WIN32_CLOSE_FD (evpipe [1]);
2092 }
2093 2760
2094#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2095 evpipe_init (EV_A); 2761 evpipe_init (EV_A);
2096 /* now iterate over everything, in case we missed something */ 2762 /* iterate over everything, in case we missed something before */
2097 pipecb (EV_A_ &pipe_w, EV_READ); 2763 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2098#endif
2099 } 2764 }
2765#endif
2100 2766
2101 postfork = 0; 2767 postfork = 0;
2102} 2768}
2103 2769
2104#if EV_MULTIPLICITY 2770#if EV_MULTIPLICITY
2105 2771
2106struct ev_loop * ecb_cold 2772struct ev_loop * ecb_cold
2107ev_loop_new (unsigned int flags) 2773ev_loop_new (unsigned int flags) EV_THROW
2108{ 2774{
2109 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2110 2776
2111 memset (EV_A, 0, sizeof (struct ev_loop)); 2777 memset (EV_A, 0, sizeof (struct ev_loop));
2112 loop_init (EV_A_ flags); 2778 loop_init (EV_A_ flags);
… …
2156} 2822}
2157#endif 2823#endif
2158 2824
2159#if EV_FEATURE_API 2825#if EV_FEATURE_API
2160void ecb_cold 2826void ecb_cold
2161ev_verify (EV_P) 2827ev_verify (EV_P) EV_THROW
2162{ 2828{
2163#if EV_VERIFY 2829#if EV_VERIFY
2164 int i; 2830 int i;
2165 WL w; 2831 WL w, w2;
2166 2832
2167 assert (activecnt >= -1); 2833 assert (activecnt >= -1);
2168 2834
2169 assert (fdchangemax >= fdchangecnt); 2835 assert (fdchangemax >= fdchangecnt);
2170 for (i = 0; i < fdchangecnt; ++i) 2836 for (i = 0; i < fdchangecnt; ++i)
2171 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2837 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2172 2838
2173 assert (anfdmax >= 0); 2839 assert (anfdmax >= 0);
2174 for (i = 0; i < anfdmax; ++i) 2840 for (i = 0; i < anfdmax; ++i)
2841 {
2842 int j = 0;
2843
2175 for (w = anfds [i].head; w; w = w->next) 2844 for (w = w2 = anfds [i].head; w; w = w->next)
2176 { 2845 {
2177 verify_watcher (EV_A_ (W)w); 2846 verify_watcher (EV_A_ (W)w);
2847
2848 if (j++ & 1)
2849 {
2850 assert (("libev: io watcher list contains a loop", w != w2));
2851 w2 = w2->next;
2852 }
2853
2178 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2854 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2179 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2855 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2180 } 2856 }
2857 }
2181 2858
2182 assert (timermax >= timercnt); 2859 assert (timermax >= timercnt);
2183 verify_heap (EV_A_ timers, timercnt); 2860 verify_heap (EV_A_ timers, timercnt);
2184 2861
2185#if EV_PERIODIC_ENABLE 2862#if EV_PERIODIC_ENABLE
… …
2235#if EV_MULTIPLICITY 2912#if EV_MULTIPLICITY
2236struct ev_loop * ecb_cold 2913struct ev_loop * ecb_cold
2237#else 2914#else
2238int 2915int
2239#endif 2916#endif
2240ev_default_loop (unsigned int flags) 2917ev_default_loop (unsigned int flags) EV_THROW
2241{ 2918{
2242 if (!ev_default_loop_ptr) 2919 if (!ev_default_loop_ptr)
2243 { 2920 {
2244#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
2245 EV_P = ev_default_loop_ptr = &default_loop_struct; 2922 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2264 2941
2265 return ev_default_loop_ptr; 2942 return ev_default_loop_ptr;
2266} 2943}
2267 2944
2268void 2945void
2269ev_loop_fork (EV_P) 2946ev_loop_fork (EV_P) EV_THROW
2270{ 2947{
2271 postfork = 1; /* must be in line with ev_default_fork */ 2948 postfork = 1;
2272} 2949}
2273 2950
2274/*****************************************************************************/ 2951/*****************************************************************************/
2275 2952
2276void 2953void
… …
2278{ 2955{
2279 EV_CB_INVOKE ((W)w, revents); 2956 EV_CB_INVOKE ((W)w, revents);
2280} 2957}
2281 2958
2282unsigned int 2959unsigned int
2283ev_pending_count (EV_P) 2960ev_pending_count (EV_P) EV_THROW
2284{ 2961{
2285 int pri; 2962 int pri;
2286 unsigned int count = 0; 2963 unsigned int count = 0;
2287 2964
2288 for (pri = NUMPRI; pri--; ) 2965 for (pri = NUMPRI; pri--; )
… …
2292} 2969}
2293 2970
2294void noinline 2971void noinline
2295ev_invoke_pending (EV_P) 2972ev_invoke_pending (EV_P)
2296{ 2973{
2297 int pri; 2974 pendingpri = NUMPRI;
2298 2975
2299 for (pri = NUMPRI; pri--; ) 2976 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2977 {
2978 --pendingpri;
2979
2300 while (pendingcnt [pri]) 2980 while (pendingcnt [pendingpri])
2301 { 2981 {
2302 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2982 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2303 2983
2304 p->w->pending = 0; 2984 p->w->pending = 0;
2305 EV_CB_INVOKE (p->w, p->events); 2985 EV_CB_INVOKE (p->w, p->events);
2306 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
2307 } 2987 }
2988 }
2308} 2989}
2309 2990
2310#if EV_IDLE_ENABLE 2991#if EV_IDLE_ENABLE
2311/* make idle watchers pending. this handles the "call-idle */ 2992/* make idle watchers pending. this handles the "call-idle */
2312/* only when higher priorities are idle" logic */ 2993/* only when higher priorities are idle" logic */
… …
2402{ 3083{
2403 EV_FREQUENT_CHECK; 3084 EV_FREQUENT_CHECK;
2404 3085
2405 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3086 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2406 { 3087 {
2407 int feed_count = 0;
2408
2409 do 3088 do
2410 { 3089 {
2411 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3090 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2412 3091
2413 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3092 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2547 3226
2548 mn_now = ev_rt_now; 3227 mn_now = ev_rt_now;
2549 } 3228 }
2550} 3229}
2551 3230
2552void 3231int
2553ev_run (EV_P_ int flags) 3232ev_run (EV_P_ int flags)
2554{ 3233{
2555#if EV_FEATURE_API 3234#if EV_FEATURE_API
2556 ++loop_depth; 3235 ++loop_depth;
2557#endif 3236#endif
… …
2670#endif 3349#endif
2671 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3350 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2672 backend_poll (EV_A_ waittime); 3351 backend_poll (EV_A_ waittime);
2673 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3352 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2674 3353
2675 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3354 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2676 3355
3356 ECB_MEMORY_FENCE_ACQUIRE;
2677 if (pipe_write_skipped) 3357 if (pipe_write_skipped)
2678 { 3358 {
2679 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3359 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2680 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3360 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2681 } 3361 }
… …
2714 loop_done = EVBREAK_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
2715 3395
2716#if EV_FEATURE_API 3396#if EV_FEATURE_API
2717 --loop_depth; 3397 --loop_depth;
2718#endif 3398#endif
3399
3400 return activecnt;
2719} 3401}
2720 3402
2721void 3403void
2722ev_break (EV_P_ int how) 3404ev_break (EV_P_ int how) EV_THROW
2723{ 3405{
2724 loop_done = how; 3406 loop_done = how;
2725} 3407}
2726 3408
2727void 3409void
2728ev_ref (EV_P) 3410ev_ref (EV_P) EV_THROW
2729{ 3411{
2730 ++activecnt; 3412 ++activecnt;
2731} 3413}
2732 3414
2733void 3415void
2734ev_unref (EV_P) 3416ev_unref (EV_P) EV_THROW
2735{ 3417{
2736 --activecnt; 3418 --activecnt;
2737} 3419}
2738 3420
2739void 3421void
2740ev_now_update (EV_P) 3422ev_now_update (EV_P) EV_THROW
2741{ 3423{
2742 time_update (EV_A_ 1e100); 3424 time_update (EV_A_ 1e100);
2743} 3425}
2744 3426
2745void 3427void
2746ev_suspend (EV_P) 3428ev_suspend (EV_P) EV_THROW
2747{ 3429{
2748 ev_now_update (EV_A); 3430 ev_now_update (EV_A);
2749} 3431}
2750 3432
2751void 3433void
2752ev_resume (EV_P) 3434ev_resume (EV_P) EV_THROW
2753{ 3435{
2754 ev_tstamp mn_prev = mn_now; 3436 ev_tstamp mn_prev = mn_now;
2755 3437
2756 ev_now_update (EV_A); 3438 ev_now_update (EV_A);
2757 timers_reschedule (EV_A_ mn_now - mn_prev); 3439 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2796 w->pending = 0; 3478 w->pending = 0;
2797 } 3479 }
2798} 3480}
2799 3481
2800int 3482int
2801ev_clear_pending (EV_P_ void *w) 3483ev_clear_pending (EV_P_ void *w) EV_THROW
2802{ 3484{
2803 W w_ = (W)w; 3485 W w_ = (W)w;
2804 int pending = w_->pending; 3486 int pending = w_->pending;
2805 3487
2806 if (expect_true (pending)) 3488 if (expect_true (pending))
… …
2839} 3521}
2840 3522
2841/*****************************************************************************/ 3523/*****************************************************************************/
2842 3524
2843void noinline 3525void noinline
2844ev_io_start (EV_P_ ev_io *w) 3526ev_io_start (EV_P_ ev_io *w) EV_THROW
2845{ 3527{
2846 int fd = w->fd; 3528 int fd = w->fd;
2847 3529
2848 if (expect_false (ev_is_active (w))) 3530 if (expect_false (ev_is_active (w)))
2849 return; 3531 return;
… …
2855 3537
2856 ev_start (EV_A_ (W)w, 1); 3538 ev_start (EV_A_ (W)w, 1);
2857 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2858 wlist_add (&anfds[fd].head, (WL)w); 3540 wlist_add (&anfds[fd].head, (WL)w);
2859 3541
3542 /* common bug, apparently */
3543 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3544
2860 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3545 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2861 w->events &= ~EV__IOFDSET; 3546 w->events &= ~EV__IOFDSET;
2862 3547
2863 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2864} 3549}
2865 3550
2866void noinline 3551void noinline
2867ev_io_stop (EV_P_ ev_io *w) 3552ev_io_stop (EV_P_ ev_io *w) EV_THROW
2868{ 3553{
2869 clear_pending (EV_A_ (W)w); 3554 clear_pending (EV_A_ (W)w);
2870 if (expect_false (!ev_is_active (w))) 3555 if (expect_false (!ev_is_active (w)))
2871 return; 3556 return;
2872 3557
… …
2881 3566
2882 EV_FREQUENT_CHECK; 3567 EV_FREQUENT_CHECK;
2883} 3568}
2884 3569
2885void noinline 3570void noinline
2886ev_timer_start (EV_P_ ev_timer *w) 3571ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2887{ 3572{
2888 if (expect_false (ev_is_active (w))) 3573 if (expect_false (ev_is_active (w)))
2889 return; 3574 return;
2890 3575
2891 ev_at (w) += mn_now; 3576 ev_at (w) += mn_now;
… …
2905 3590
2906 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3591 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2907} 3592}
2908 3593
2909void noinline 3594void noinline
2910ev_timer_stop (EV_P_ ev_timer *w) 3595ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2911{ 3596{
2912 clear_pending (EV_A_ (W)w); 3597 clear_pending (EV_A_ (W)w);
2913 if (expect_false (!ev_is_active (w))) 3598 if (expect_false (!ev_is_active (w)))
2914 return; 3599 return;
2915 3600
… …
2935 3620
2936 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2937} 3622}
2938 3623
2939void noinline 3624void noinline
2940ev_timer_again (EV_P_ ev_timer *w) 3625ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2941{ 3626{
2942 EV_FREQUENT_CHECK; 3627 EV_FREQUENT_CHECK;
3628
3629 clear_pending (EV_A_ (W)w);
2943 3630
2944 if (ev_is_active (w)) 3631 if (ev_is_active (w))
2945 { 3632 {
2946 if (w->repeat) 3633 if (w->repeat)
2947 { 3634 {
… …
2960 3647
2961 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
2962} 3649}
2963 3650
2964ev_tstamp 3651ev_tstamp
2965ev_timer_remaining (EV_P_ ev_timer *w) 3652ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2966{ 3653{
2967 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3654 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2968} 3655}
2969 3656
2970#if EV_PERIODIC_ENABLE 3657#if EV_PERIODIC_ENABLE
2971void noinline 3658void noinline
2972ev_periodic_start (EV_P_ ev_periodic *w) 3659ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2973{ 3660{
2974 if (expect_false (ev_is_active (w))) 3661 if (expect_false (ev_is_active (w)))
2975 return; 3662 return;
2976 3663
2977 if (w->reschedule_cb) 3664 if (w->reschedule_cb)
… …
2997 3684
2998 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3685 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2999} 3686}
3000 3687
3001void noinline 3688void noinline
3002ev_periodic_stop (EV_P_ ev_periodic *w) 3689ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3003{ 3690{
3004 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
3005 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
3006 return; 3693 return;
3007 3694
… …
3025 3712
3026 EV_FREQUENT_CHECK; 3713 EV_FREQUENT_CHECK;
3027} 3714}
3028 3715
3029void noinline 3716void noinline
3030ev_periodic_again (EV_P_ ev_periodic *w) 3717ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3031{ 3718{
3032 /* TODO: use adjustheap and recalculation */ 3719 /* TODO: use adjustheap and recalculation */
3033 ev_periodic_stop (EV_A_ w); 3720 ev_periodic_stop (EV_A_ w);
3034 ev_periodic_start (EV_A_ w); 3721 ev_periodic_start (EV_A_ w);
3035} 3722}
… …
3040#endif 3727#endif
3041 3728
3042#if EV_SIGNAL_ENABLE 3729#if EV_SIGNAL_ENABLE
3043 3730
3044void noinline 3731void noinline
3045ev_signal_start (EV_P_ ev_signal *w) 3732ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3046{ 3733{
3047 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
3048 return; 3735 return;
3049 3736
3050 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3737 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3052#if EV_MULTIPLICITY 3739#if EV_MULTIPLICITY
3053 assert (("libev: a signal must not be attached to two different loops", 3740 assert (("libev: a signal must not be attached to two different loops",
3054 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3741 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3055 3742
3056 signals [w->signum - 1].loop = EV_A; 3743 signals [w->signum - 1].loop = EV_A;
3744 ECB_MEMORY_FENCE_RELEASE;
3057#endif 3745#endif
3058 3746
3059 EV_FREQUENT_CHECK; 3747 EV_FREQUENT_CHECK;
3060 3748
3061#if EV_USE_SIGNALFD 3749#if EV_USE_SIGNALFD
… …
3121 3809
3122 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
3123} 3811}
3124 3812
3125void noinline 3813void noinline
3126ev_signal_stop (EV_P_ ev_signal *w) 3814ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3127{ 3815{
3128 clear_pending (EV_A_ (W)w); 3816 clear_pending (EV_A_ (W)w);
3129 if (expect_false (!ev_is_active (w))) 3817 if (expect_false (!ev_is_active (w)))
3130 return; 3818 return;
3131 3819
… …
3162#endif 3850#endif
3163 3851
3164#if EV_CHILD_ENABLE 3852#if EV_CHILD_ENABLE
3165 3853
3166void 3854void
3167ev_child_start (EV_P_ ev_child *w) 3855ev_child_start (EV_P_ ev_child *w) EV_THROW
3168{ 3856{
3169#if EV_MULTIPLICITY 3857#if EV_MULTIPLICITY
3170 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3858 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3171#endif 3859#endif
3172 if (expect_false (ev_is_active (w))) 3860 if (expect_false (ev_is_active (w)))
… …
3179 3867
3180 EV_FREQUENT_CHECK; 3868 EV_FREQUENT_CHECK;
3181} 3869}
3182 3870
3183void 3871void
3184ev_child_stop (EV_P_ ev_child *w) 3872ev_child_stop (EV_P_ ev_child *w) EV_THROW
3185{ 3873{
3186 clear_pending (EV_A_ (W)w); 3874 clear_pending (EV_A_ (W)w);
3187 if (expect_false (!ev_is_active (w))) 3875 if (expect_false (!ev_is_active (w)))
3188 return; 3876 return;
3189 3877
… …
3216# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3904# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3217 3905
3218static void noinline 3906static void noinline
3219infy_add (EV_P_ ev_stat *w) 3907infy_add (EV_P_ ev_stat *w)
3220{ 3908{
3221 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); 3909 w->wd = inotify_add_watch (fs_fd, w->path,
3910 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3911 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3912 | IN_DONT_FOLLOW | IN_MASK_ADD);
3222 3913
3223 if (w->wd >= 0) 3914 if (w->wd >= 0)
3224 { 3915 {
3225 struct statfs sfs; 3916 struct statfs sfs;
3226 3917
… …
3230 3921
3231 if (!fs_2625) 3922 if (!fs_2625)
3232 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3923 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3233 else if (!statfs (w->path, &sfs) 3924 else if (!statfs (w->path, &sfs)
3234 && (sfs.f_type == 0x1373 /* devfs */ 3925 && (sfs.f_type == 0x1373 /* devfs */
3926 || sfs.f_type == 0x4006 /* fat */
3927 || sfs.f_type == 0x4d44 /* msdos */
3235 || sfs.f_type == 0xEF53 /* ext2/3 */ 3928 || sfs.f_type == 0xEF53 /* ext2/3 */
3929 || sfs.f_type == 0x72b6 /* jffs2 */
3930 || sfs.f_type == 0x858458f6 /* ramfs */
3931 || sfs.f_type == 0x5346544e /* ntfs */
3236 || sfs.f_type == 0x3153464a /* jfs */ 3932 || sfs.f_type == 0x3153464a /* jfs */
3933 || sfs.f_type == 0x9123683e /* btrfs */
3237 || sfs.f_type == 0x52654973 /* reiser3 */ 3934 || sfs.f_type == 0x52654973 /* reiser3 */
3238 || sfs.f_type == 0x01021994 /* tempfs */ 3935 || sfs.f_type == 0x01021994 /* tmpfs */
3239 || sfs.f_type == 0x58465342 /* xfs */)) 3936 || sfs.f_type == 0x58465342 /* xfs */))
3240 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3937 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3241 else 3938 else
3242 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3939 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3243 } 3940 }
… …
3356} 4053}
3357 4054
3358inline_size int 4055inline_size int
3359infy_newfd (void) 4056infy_newfd (void)
3360{ 4057{
3361#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4058#if defined IN_CLOEXEC && defined IN_NONBLOCK
3362 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4059 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3363 if (fd >= 0) 4060 if (fd >= 0)
3364 return fd; 4061 return fd;
3365#endif 4062#endif
3366 return inotify_init (); 4063 return inotify_init ();
… …
3441#else 4138#else
3442# define EV_LSTAT(p,b) lstat (p, b) 4139# define EV_LSTAT(p,b) lstat (p, b)
3443#endif 4140#endif
3444 4141
3445void 4142void
3446ev_stat_stat (EV_P_ ev_stat *w) 4143ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3447{ 4144{
3448 if (lstat (w->path, &w->attr) < 0) 4145 if (lstat (w->path, &w->attr) < 0)
3449 w->attr.st_nlink = 0; 4146 w->attr.st_nlink = 0;
3450 else if (!w->attr.st_nlink) 4147 else if (!w->attr.st_nlink)
3451 w->attr.st_nlink = 1; 4148 w->attr.st_nlink = 1;
… …
3490 ev_feed_event (EV_A_ w, EV_STAT); 4187 ev_feed_event (EV_A_ w, EV_STAT);
3491 } 4188 }
3492} 4189}
3493 4190
3494void 4191void
3495ev_stat_start (EV_P_ ev_stat *w) 4192ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3496{ 4193{
3497 if (expect_false (ev_is_active (w))) 4194 if (expect_false (ev_is_active (w)))
3498 return; 4195 return;
3499 4196
3500 ev_stat_stat (EV_A_ w); 4197 ev_stat_stat (EV_A_ w);
… …
3521 4218
3522 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
3523} 4220}
3524 4221
3525void 4222void
3526ev_stat_stop (EV_P_ ev_stat *w) 4223ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3527{ 4224{
3528 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
3529 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
3530 return; 4227 return;
3531 4228
… …
3547} 4244}
3548#endif 4245#endif
3549 4246
3550#if EV_IDLE_ENABLE 4247#if EV_IDLE_ENABLE
3551void 4248void
3552ev_idle_start (EV_P_ ev_idle *w) 4249ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3553{ 4250{
3554 if (expect_false (ev_is_active (w))) 4251 if (expect_false (ev_is_active (w)))
3555 return; 4252 return;
3556 4253
3557 pri_adjust (EV_A_ (W)w); 4254 pri_adjust (EV_A_ (W)w);
… …
3570 4267
3571 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
3572} 4269}
3573 4270
3574void 4271void
3575ev_idle_stop (EV_P_ ev_idle *w) 4272ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3576{ 4273{
3577 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
3579 return; 4276 return;
3580 4277
… …
3594} 4291}
3595#endif 4292#endif
3596 4293
3597#if EV_PREPARE_ENABLE 4294#if EV_PREPARE_ENABLE
3598void 4295void
3599ev_prepare_start (EV_P_ ev_prepare *w) 4296ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3600{ 4297{
3601 if (expect_false (ev_is_active (w))) 4298 if (expect_false (ev_is_active (w)))
3602 return; 4299 return;
3603 4300
3604 EV_FREQUENT_CHECK; 4301 EV_FREQUENT_CHECK;
… …
3609 4306
3610 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3611} 4308}
3612 4309
3613void 4310void
3614ev_prepare_stop (EV_P_ ev_prepare *w) 4311ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3615{ 4312{
3616 clear_pending (EV_A_ (W)w); 4313 clear_pending (EV_A_ (W)w);
3617 if (expect_false (!ev_is_active (w))) 4314 if (expect_false (!ev_is_active (w)))
3618 return; 4315 return;
3619 4316
… …
3632} 4329}
3633#endif 4330#endif
3634 4331
3635#if EV_CHECK_ENABLE 4332#if EV_CHECK_ENABLE
3636void 4333void
3637ev_check_start (EV_P_ ev_check *w) 4334ev_check_start (EV_P_ ev_check *w) EV_THROW
3638{ 4335{
3639 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
3640 return; 4337 return;
3641 4338
3642 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
… …
3647 4344
3648 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3649} 4346}
3650 4347
3651void 4348void
3652ev_check_stop (EV_P_ ev_check *w) 4349ev_check_stop (EV_P_ ev_check *w) EV_THROW
3653{ 4350{
3654 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
3655 if (expect_false (!ev_is_active (w))) 4352 if (expect_false (!ev_is_active (w)))
3656 return; 4353 return;
3657 4354
… …
3670} 4367}
3671#endif 4368#endif
3672 4369
3673#if EV_EMBED_ENABLE 4370#if EV_EMBED_ENABLE
3674void noinline 4371void noinline
3675ev_embed_sweep (EV_P_ ev_embed *w) 4372ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3676{ 4373{
3677 ev_run (w->other, EVRUN_NOWAIT); 4374 ev_run (w->other, EVRUN_NOWAIT);
3678} 4375}
3679 4376
3680static void 4377static void
… …
3728 ev_idle_stop (EV_A_ idle); 4425 ev_idle_stop (EV_A_ idle);
3729} 4426}
3730#endif 4427#endif
3731 4428
3732void 4429void
3733ev_embed_start (EV_P_ ev_embed *w) 4430ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3734{ 4431{
3735 if (expect_false (ev_is_active (w))) 4432 if (expect_false (ev_is_active (w)))
3736 return; 4433 return;
3737 4434
3738 { 4435 {
… …
3759 4456
3760 EV_FREQUENT_CHECK; 4457 EV_FREQUENT_CHECK;
3761} 4458}
3762 4459
3763void 4460void
3764ev_embed_stop (EV_P_ ev_embed *w) 4461ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3765{ 4462{
3766 clear_pending (EV_A_ (W)w); 4463 clear_pending (EV_A_ (W)w);
3767 if (expect_false (!ev_is_active (w))) 4464 if (expect_false (!ev_is_active (w)))
3768 return; 4465 return;
3769 4466
… …
3779} 4476}
3780#endif 4477#endif
3781 4478
3782#if EV_FORK_ENABLE 4479#if EV_FORK_ENABLE
3783void 4480void
3784ev_fork_start (EV_P_ ev_fork *w) 4481ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3785{ 4482{
3786 if (expect_false (ev_is_active (w))) 4483 if (expect_false (ev_is_active (w)))
3787 return; 4484 return;
3788 4485
3789 EV_FREQUENT_CHECK; 4486 EV_FREQUENT_CHECK;
… …
3794 4491
3795 EV_FREQUENT_CHECK; 4492 EV_FREQUENT_CHECK;
3796} 4493}
3797 4494
3798void 4495void
3799ev_fork_stop (EV_P_ ev_fork *w) 4496ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3800{ 4497{
3801 clear_pending (EV_A_ (W)w); 4498 clear_pending (EV_A_ (W)w);
3802 if (expect_false (!ev_is_active (w))) 4499 if (expect_false (!ev_is_active (w)))
3803 return; 4500 return;
3804 4501
… …
3817} 4514}
3818#endif 4515#endif
3819 4516
3820#if EV_CLEANUP_ENABLE 4517#if EV_CLEANUP_ENABLE
3821void 4518void
3822ev_cleanup_start (EV_P_ ev_cleanup *w) 4519ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3823{ 4520{
3824 if (expect_false (ev_is_active (w))) 4521 if (expect_false (ev_is_active (w)))
3825 return; 4522 return;
3826 4523
3827 EV_FREQUENT_CHECK; 4524 EV_FREQUENT_CHECK;
… …
3834 ev_unref (EV_A); 4531 ev_unref (EV_A);
3835 EV_FREQUENT_CHECK; 4532 EV_FREQUENT_CHECK;
3836} 4533}
3837 4534
3838void 4535void
3839ev_cleanup_stop (EV_P_ ev_cleanup *w) 4536ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3840{ 4537{
3841 clear_pending (EV_A_ (W)w); 4538 clear_pending (EV_A_ (W)w);
3842 if (expect_false (!ev_is_active (w))) 4539 if (expect_false (!ev_is_active (w)))
3843 return; 4540 return;
3844 4541
… …
3858} 4555}
3859#endif 4556#endif
3860 4557
3861#if EV_ASYNC_ENABLE 4558#if EV_ASYNC_ENABLE
3862void 4559void
3863ev_async_start (EV_P_ ev_async *w) 4560ev_async_start (EV_P_ ev_async *w) EV_THROW
3864{ 4561{
3865 if (expect_false (ev_is_active (w))) 4562 if (expect_false (ev_is_active (w)))
3866 return; 4563 return;
3867 4564
3868 w->sent = 0; 4565 w->sent = 0;
… …
3877 4574
3878 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
3879} 4576}
3880 4577
3881void 4578void
3882ev_async_stop (EV_P_ ev_async *w) 4579ev_async_stop (EV_P_ ev_async *w) EV_THROW
3883{ 4580{
3884 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
3885 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
3886 return; 4583 return;
3887 4584
… …
3898 4595
3899 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
3900} 4597}
3901 4598
3902void 4599void
3903ev_async_send (EV_P_ ev_async *w) 4600ev_async_send (EV_P_ ev_async *w) EV_THROW
3904{ 4601{
3905 w->sent = 1; 4602 w->sent = 1;
3906 evpipe_write (EV_A_ &async_pending); 4603 evpipe_write (EV_A_ &async_pending);
3907} 4604}
3908#endif 4605#endif
… …
3945 4642
3946 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3947} 4644}
3948 4645
3949void 4646void
3950ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3951{ 4648{
3952 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3953 4650
3954 if (expect_false (!once)) 4651 if (expect_false (!once))
3955 { 4652 {
… …
3977 4674
3978/*****************************************************************************/ 4675/*****************************************************************************/
3979 4676
3980#if EV_WALK_ENABLE 4677#if EV_WALK_ENABLE
3981void ecb_cold 4678void ecb_cold
3982ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3983{ 4680{
3984 int i, j; 4681 int i, j;
3985 ev_watcher_list *wl, *wn; 4682 ev_watcher_list *wl, *wn;
3986 4683
3987 if (types & (EV_IO | EV_EMBED)) 4684 if (types & (EV_IO | EV_EMBED))
… …
4030 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4031#endif 4728#endif
4032 4729
4033#if EV_IDLE_ENABLE 4730#if EV_IDLE_ENABLE
4034 if (types & EV_IDLE) 4731 if (types & EV_IDLE)
4035 for (j = NUMPRI; i--; ) 4732 for (j = NUMPRI; j--; )
4036 for (i = idlecnt [j]; i--; ) 4733 for (i = idlecnt [j]; i--; )
4037 cb (EV_A_ EV_IDLE, idles [j][i]); 4734 cb (EV_A_ EV_IDLE, idles [j][i]);
4038#endif 4735#endif
4039 4736
4040#if EV_FORK_ENABLE 4737#if EV_FORK_ENABLE
… …
4093 4790
4094#if EV_MULTIPLICITY 4791#if EV_MULTIPLICITY
4095 #include "ev_wrap.h" 4792 #include "ev_wrap.h"
4096#endif 4793#endif
4097 4794
4098EV_CPP(})
4099

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