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Comparing libev/ev.c (file contents):
Revision 1.388 by root, Fri Jul 29 12:17:26 2011 UTC vs.
Revision 1.450 by root, Mon Oct 8 15:43:35 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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
… …
350#endif 360#endif
351 361
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* 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. */ 363/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 365# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
360# else 370# else
… …
386# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
387#endif 397#endif
388 398
389#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 401# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 402# include <sys/select.h>
393# endif 403# endif
394#endif 404#endif
395 405
396#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
403# endif 413# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 414#endif
409 415
410#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 418# include <stdint.h>
… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 471
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 472#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) 473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 474
469/* the following are taken from libecb */ 475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010002
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
519 #if __GNUC__
520 typedef signed long long int64_t;
521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535#else
536 #include <inttypes.h>
537 #if UINTMAX_MAX > 0xffffffffU
538 #define ECB_PTRSIZE 8
539 #else
540 #define ECB_PTRSIZE 4
541 #endif
542#endif
471 543
472/* many compilers define _GNUC_ to some versions but then only implement 544/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 545 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 546 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 547 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 548 * 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. 549 * an issue with that they should have done it right in the first place.
478 */ 550 */
479#ifndef ECB_GCC_VERSION 551#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 552 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 553 #define ECB_GCC_VERSION(major,minor) 0
482 #else 554 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 555 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif 556 #endif
485#endif 557#endif
558
559#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
560#define ECB_C99 (__STDC_VERSION__ >= 199901L)
561#define ECB_C11 (__STDC_VERSION__ >= 201112L)
562#define ECB_CPP (__cplusplus+0)
563#define ECB_CPP11 (__cplusplus >= 201103L)
564
565#if ECB_CPP
566 #define ECB_EXTERN_C extern "C"
567 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568 #define ECB_EXTERN_C_END }
569#else
570 #define ECB_EXTERN_C extern
571 #define ECB_EXTERN_C_BEG
572 #define ECB_EXTERN_C_END
573#endif
574
575/*****************************************************************************/
576
577/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
578/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
579
580#if ECB_NO_THREADS
581 #define ECB_NO_SMP 1
582#endif
583
584#if ECB_NO_SMP
585 #define ECB_MEMORY_FENCE do { } while (0)
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
590 #if __i386 || __i386__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
594 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
595 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
598 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
600 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
601 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
604 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606 #elif __sparc || __sparc__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
610 #elif defined __s390__ || defined __s390x__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612 #elif defined __mips__
613 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
614 #elif defined __alpha__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616 #elif defined __hppa__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619 #elif defined __ia64__
620 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
621 #endif
622 #endif
623#endif
624
625#ifndef ECB_MEMORY_FENCE
626 #if ECB_GCC_VERSION(4,7)
627 /* see comment below (stdatomic.h) about the C11 memory model. */
628 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
629
630 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
631 * without risking compile time errors with other compilers. We *could*
632 * define our own ecb_clang_has_feature, but I just can't be bothered to work
633 * around this shit time and again.
634 * #elif defined __clang && __has_feature (cxx_atomic)
635 * // see comment below (stdatomic.h) about the C11 memory model.
636 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637 */
638
639 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
640 #define ECB_MEMORY_FENCE __sync_synchronize ()
641 #elif _MSC_VER >= 1400 /* VC++ 2005 */
642 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
646 #elif defined _WIN32
647 #include <WinNT.h>
648 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
649 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
650 #include <mbarrier.h>
651 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
652 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
653 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
654 #elif __xlC__
655 #define ECB_MEMORY_FENCE __sync ()
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
661 /* we assume that these memory fences work on all variables/all memory accesses, */
662 /* not just C11 atomics and atomic accesses */
663 #include <stdatomic.h>
664 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
665 /* any fence other than seq_cst, which isn't very efficient for us. */
666 /* Why that is, we don't know - either the C11 memory model is quite useless */
667 /* for most usages, or gcc and clang have a bug */
668 /* I *currently* lean towards the latter, and inefficiently implement */
669 /* all three of ecb's fences as a seq_cst fence */
670 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671 #endif
672#endif
673
674#ifndef ECB_MEMORY_FENCE
675 #if !ECB_AVOID_PTHREADS
676 /*
677 * if you get undefined symbol references to pthread_mutex_lock,
678 * or failure to find pthread.h, then you should implement
679 * the ECB_MEMORY_FENCE operations for your cpu/compiler
680 * OR provide pthread.h and link against the posix thread library
681 * of your system.
682 */
683 #include <pthread.h>
684 #define ECB_NEEDS_PTHREADS 1
685 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
686
687 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
688 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
689 #endif
690#endif
691
692#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
693 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
694#endif
695
696#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
697 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698#endif
699
700/*****************************************************************************/
486 701
487#if __cplusplus 702#if __cplusplus
488 #define ecb_inline static inline 703 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 704#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 705 #define ecb_inline static __inline__
… …
492 #define ecb_inline static inline 707 #define ecb_inline static inline
493#else 708#else
494 #define ecb_inline static 709 #define ecb_inline static
495#endif 710#endif
496 711
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5) 712#if ECB_GCC_VERSION(3,3)
499 #if __x86 713 #define ecb_restrict __restrict__
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 714#elif ECB_C99
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 715 #define ecb_restrict restrict
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ 716#else
503 #elif __amd64 717 #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 718#endif
509#endif
510 719
511#ifndef ECB_MEMORY_FENCE 720typedef 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 && 0 /* TODO: only true when using volatiles */
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32)
521 #include <WinNT.h>
522 #define ECB_MEMORY_FENCE MemoryBarrier ()
523 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
524 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
525 #endif
526#endif
527 721
528#ifndef ECB_MEMORY_FENCE 722#define ECB_CONCAT_(a, b) a ## b
529 #include <pthread.h> 723#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724#define ECB_STRINGIFY_(a) # a
725#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
530 726
531 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 727#define ecb_function_ ecb_inline
532 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
533 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
534 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
535#endif
536 728
537#if ECB_GCC_VERSION(3,1) 729#if ECB_GCC_VERSION(3,1)
538 #define ecb_attribute(attrlist) __attribute__(attrlist) 730 #define ecb_attribute(attrlist) __attribute__(attrlist)
539 #define ecb_is_constant(expr) __builtin_constant_p (expr) 731 #define ecb_is_constant(expr) __builtin_constant_p (expr)
540 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 732 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
… …
544 #define ecb_is_constant(expr) 0 736 #define ecb_is_constant(expr) 0
545 #define ecb_expect(expr,value) (expr) 737 #define ecb_expect(expr,value) (expr)
546 #define ecb_prefetch(addr,rw,locality) 738 #define ecb_prefetch(addr,rw,locality)
547#endif 739#endif
548 740
741/* no emulation for ecb_decltype */
742#if ECB_GCC_VERSION(4,5)
743 #define ecb_decltype(x) __decltype(x)
744#elif ECB_GCC_VERSION(3,0)
745 #define ecb_decltype(x) __typeof(x)
746#endif
747
549#define ecb_noinline ecb_attribute ((__noinline__)) 748#define ecb_noinline ecb_attribute ((__noinline__))
550#define ecb_noreturn ecb_attribute ((__noreturn__))
551#define ecb_unused ecb_attribute ((__unused__)) 749#define ecb_unused ecb_attribute ((__unused__))
552#define ecb_const ecb_attribute ((__const__)) 750#define ecb_const ecb_attribute ((__const__))
553#define ecb_pure ecb_attribute ((__pure__)) 751#define ecb_pure ecb_attribute ((__pure__))
752
753#if ECB_C11
754 #define ecb_noreturn _Noreturn
755#else
756 #define ecb_noreturn ecb_attribute ((__noreturn__))
757#endif
554 758
555#if ECB_GCC_VERSION(4,3) 759#if ECB_GCC_VERSION(4,3)
556 #define ecb_artificial ecb_attribute ((__artificial__)) 760 #define ecb_artificial ecb_attribute ((__artificial__))
557 #define ecb_hot ecb_attribute ((__hot__)) 761 #define ecb_hot ecb_attribute ((__hot__))
558 #define ecb_cold ecb_attribute ((__cold__)) 762 #define ecb_cold ecb_attribute ((__cold__))
… …
565/* put around conditional expressions if you are very sure that the */ 769/* put around conditional expressions if you are very sure that the */
566/* expression is mostly true or mostly false. note that these return */ 770/* expression is mostly true or mostly false. note that these return */
567/* booleans, not the expression. */ 771/* booleans, not the expression. */
568#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 772#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
569#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 773#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
570/* ecb.h end */ 774/* for compatibility to the rest of the world */
775#define ecb_likely(expr) ecb_expect_true (expr)
776#define ecb_unlikely(expr) ecb_expect_false (expr)
777
778/* count trailing zero bits and count # of one bits */
779#if ECB_GCC_VERSION(3,4)
780 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783 #define ecb_ctz32(x) __builtin_ctz (x)
784 #define ecb_ctz64(x) __builtin_ctzll (x)
785 #define ecb_popcount32(x) __builtin_popcount (x)
786 /* no popcountll */
787#else
788 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
789 ecb_function_ int
790 ecb_ctz32 (uint32_t x)
791 {
792 int r = 0;
793
794 x &= ~x + 1; /* this isolates the lowest bit */
795
796#if ECB_branchless_on_i386
797 r += !!(x & 0xaaaaaaaa) << 0;
798 r += !!(x & 0xcccccccc) << 1;
799 r += !!(x & 0xf0f0f0f0) << 2;
800 r += !!(x & 0xff00ff00) << 3;
801 r += !!(x & 0xffff0000) << 4;
802#else
803 if (x & 0xaaaaaaaa) r += 1;
804 if (x & 0xcccccccc) r += 2;
805 if (x & 0xf0f0f0f0) r += 4;
806 if (x & 0xff00ff00) r += 8;
807 if (x & 0xffff0000) r += 16;
808#endif
809
810 return r;
811 }
812
813 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
814 ecb_function_ int
815 ecb_ctz64 (uint64_t x)
816 {
817 int shift = x & 0xffffffffU ? 0 : 32;
818 return ecb_ctz32 (x >> shift) + shift;
819 }
820
821 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
822 ecb_function_ int
823 ecb_popcount32 (uint32_t x)
824 {
825 x -= (x >> 1) & 0x55555555;
826 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827 x = ((x >> 4) + x) & 0x0f0f0f0f;
828 x *= 0x01010101;
829
830 return x >> 24;
831 }
832
833 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
834 ecb_function_ int ecb_ld32 (uint32_t x)
835 {
836 int r = 0;
837
838 if (x >> 16) { x >>= 16; r += 16; }
839 if (x >> 8) { x >>= 8; r += 8; }
840 if (x >> 4) { x >>= 4; r += 4; }
841 if (x >> 2) { x >>= 2; r += 2; }
842 if (x >> 1) { r += 1; }
843
844 return r;
845 }
846
847 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
848 ecb_function_ int ecb_ld64 (uint64_t x)
849 {
850 int r = 0;
851
852 if (x >> 32) { x >>= 32; r += 32; }
853
854 return r + ecb_ld32 (x);
855 }
856#endif
857
858ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
859ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
861ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862
863ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
864ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
865{
866 return ( (x * 0x0802U & 0x22110U)
867 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868}
869
870ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
871ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
872{
873 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
874 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
875 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
876 x = ( x >> 8 ) | ( x << 8);
877
878 return x;
879}
880
881ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
882ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
883{
884 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
885 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
886 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
887 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
888 x = ( x >> 16 ) | ( x << 16);
889
890 return x;
891}
892
893/* popcount64 is only available on 64 bit cpus as gcc builtin */
894/* so for this version we are lazy */
895ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
896ecb_function_ int
897ecb_popcount64 (uint64_t x)
898{
899 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900}
901
902ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
903ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
904ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
905ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
906ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
907ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
908ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
909ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
910
911ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
912ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
913ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
914ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
915ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
916ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
917ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
918ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
919
920#if ECB_GCC_VERSION(4,3)
921 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
922 #define ecb_bswap32(x) __builtin_bswap32 (x)
923 #define ecb_bswap64(x) __builtin_bswap64 (x)
924#else
925 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
926 ecb_function_ uint16_t
927 ecb_bswap16 (uint16_t x)
928 {
929 return ecb_rotl16 (x, 8);
930 }
931
932 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
933 ecb_function_ uint32_t
934 ecb_bswap32 (uint32_t x)
935 {
936 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
937 }
938
939 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
940 ecb_function_ uint64_t
941 ecb_bswap64 (uint64_t x)
942 {
943 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
944 }
945#endif
946
947#if ECB_GCC_VERSION(4,5)
948 #define ecb_unreachable() __builtin_unreachable ()
949#else
950 /* this seems to work fine, but gcc always emits a warning for it :/ */
951 ecb_inline void ecb_unreachable (void) ecb_noreturn;
952 ecb_inline void ecb_unreachable (void) { }
953#endif
954
955/* try to tell the compiler that some condition is definitely true */
956#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957
958ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
959ecb_inline unsigned char
960ecb_byteorder_helper (void)
961{
962 /* the union code still generates code under pressure in gcc, */
963 /* but less than using pointers, and always seems to */
964 /* successfully return a constant. */
965 /* the reason why we have this horrible preprocessor mess */
966 /* is to avoid it in all cases, at least on common architectures */
967 /* or when using a recent enough gcc version (>= 4.6) */
968#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
969 return 0x44;
970#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
971 return 0x44;
972#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
973 return 0x11;
974#else
975 union
976 {
977 uint32_t i;
978 uint8_t c;
979 } u = { 0x11223344 };
980 return u.c;
981#endif
982}
983
984ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
985ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
986ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
987ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988
989#if ECB_GCC_VERSION(3,0) || ECB_C99
990 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991#else
992 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993#endif
994
995#if __cplusplus
996 template<typename T>
997 static inline T ecb_div_rd (T val, T div)
998 {
999 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000 }
1001 template<typename T>
1002 static inline T ecb_div_ru (T val, T div)
1003 {
1004 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1005 }
1006#else
1007 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1008 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1009#endif
1010
1011#if ecb_cplusplus_does_not_suck
1012 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1013 template<typename T, int N>
1014 static inline int ecb_array_length (const T (&arr)[N])
1015 {
1016 return N;
1017 }
1018#else
1019 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1020#endif
1021
1022/*******************************************************************************/
1023/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1024
1025/* basically, everything uses "ieee pure-endian" floating point numbers */
1026/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027#if 0 \
1028 || __i386 || __i386__ \
1029 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1030 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1031 || defined __arm__ && defined __ARM_EABI__ \
1032 || defined __s390__ || defined __s390x__ \
1033 || defined __mips__ \
1034 || defined __alpha__ \
1035 || defined __hppa__ \
1036 || defined __ia64__ \
1037 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1038 #define ECB_STDFP 1
1039 #include <string.h> /* for memcpy */
1040#else
1041 #define ECB_STDFP 0
1042 #include <math.h> /* for frexp*, ldexp* */
1043#endif
1044
1045#ifndef ECB_NO_LIBM
1046
1047 /* convert a float to ieee single/binary32 */
1048 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1049 ecb_function_ uint32_t
1050 ecb_float_to_binary32 (float x)
1051 {
1052 uint32_t r;
1053
1054 #if ECB_STDFP
1055 memcpy (&r, &x, 4);
1056 #else
1057 /* slow emulation, works for anything but -0 */
1058 uint32_t m;
1059 int e;
1060
1061 if (x == 0e0f ) return 0x00000000U;
1062 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064 if (x != x ) return 0x7fbfffffU;
1065
1066 m = frexpf (x, &e) * 0x1000000U;
1067
1068 r = m & 0x80000000U;
1069
1070 if (r)
1071 m = -m;
1072
1073 if (e <= -126)
1074 {
1075 m &= 0xffffffU;
1076 m >>= (-125 - e);
1077 e = -126;
1078 }
1079
1080 r |= (e + 126) << 23;
1081 r |= m & 0x7fffffU;
1082 #endif
1083
1084 return r;
1085 }
1086
1087 /* converts an ieee single/binary32 to a float */
1088 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1089 ecb_function_ float
1090 ecb_binary32_to_float (uint32_t x)
1091 {
1092 float r;
1093
1094 #if ECB_STDFP
1095 memcpy (&r, &x, 4);
1096 #else
1097 /* emulation, only works for normals and subnormals and +0 */
1098 int neg = x >> 31;
1099 int e = (x >> 23) & 0xffU;
1100
1101 x &= 0x7fffffU;
1102
1103 if (e)
1104 x |= 0x800000U;
1105 else
1106 e = 1;
1107
1108 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1109 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1110
1111 r = neg ? -r : r;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* convert a double to ieee double/binary64 */
1118 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1119 ecb_function_ uint64_t
1120 ecb_double_to_binary64 (double x)
1121 {
1122 uint64_t r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 8);
1126 #else
1127 /* slow emulation, works for anything but -0 */
1128 uint64_t m;
1129 int e;
1130
1131 if (x == 0e0 ) return 0x0000000000000000U;
1132 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1133 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1134 if (x != x ) return 0X7ff7ffffffffffffU;
1135
1136 m = frexp (x, &e) * 0x20000000000000U;
1137
1138 r = m & 0x8000000000000000;;
1139
1140 if (r)
1141 m = -m;
1142
1143 if (e <= -1022)
1144 {
1145 m &= 0x1fffffffffffffU;
1146 m >>= (-1021 - e);
1147 e = -1022;
1148 }
1149
1150 r |= ((uint64_t)(e + 1022)) << 52;
1151 r |= m & 0xfffffffffffffU;
1152 #endif
1153
1154 return r;
1155 }
1156
1157 /* converts an ieee double/binary64 to a double */
1158 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1159 ecb_function_ double
1160 ecb_binary64_to_double (uint64_t x)
1161 {
1162 double r;
1163
1164 #if ECB_STDFP
1165 memcpy (&r, &x, 8);
1166 #else
1167 /* emulation, only works for normals and subnormals and +0 */
1168 int neg = x >> 63;
1169 int e = (x >> 52) & 0x7ffU;
1170
1171 x &= 0xfffffffffffffU;
1172
1173 if (e)
1174 x |= 0x10000000000000U;
1175 else
1176 e = 1;
1177
1178 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1179 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1180
1181 r = neg ? -r : r;
1182 #endif
1183
1184 return r;
1185 }
1186
1187#endif
1188
1189#endif
1190
1191/* ECB.H END */
1192
1193#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1194/* if your architecture doesn't need memory fences, e.g. because it is
1195 * single-cpu/core, or if you use libev in a project that doesn't use libev
1196 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1197 * libev, in which cases the memory fences become nops.
1198 * alternatively, you can remove this #error and link against libpthread,
1199 * which will then provide the memory fences.
1200 */
1201# error "memory fences not defined for your architecture, please report"
1202#endif
1203
1204#ifndef ECB_MEMORY_FENCE
1205# define ECB_MEMORY_FENCE do { } while (0)
1206# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1207# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1208#endif
571 1209
572#define expect_false(cond) ecb_expect_false (cond) 1210#define expect_false(cond) ecb_expect_false (cond)
573#define expect_true(cond) ecb_expect_true (cond) 1211#define expect_true(cond) ecb_expect_true (cond)
574#define noinline ecb_noinline 1212#define noinline ecb_noinline
575 1213
… …
721{ 1359{
722 write (STDERR_FILENO, msg, strlen (msg)); 1360 write (STDERR_FILENO, msg, strlen (msg));
723} 1361}
724#endif 1362#endif
725 1363
726static void (*syserr_cb)(const char *msg); 1364static void (*syserr_cb)(const char *msg) EV_THROW;
727 1365
728void ecb_cold 1366void ecb_cold
729ev_set_syserr_cb (void (*cb)(const char *msg)) 1367ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
730{ 1368{
731 syserr_cb = cb; 1369 syserr_cb = cb;
732} 1370}
733 1371
734static void noinline ecb_cold 1372static void noinline ecb_cold
… …
752 abort (); 1390 abort ();
753 } 1391 }
754} 1392}
755 1393
756static void * 1394static void *
757ev_realloc_emul (void *ptr, long size) 1395ev_realloc_emul (void *ptr, long size) EV_THROW
758{ 1396{
759#if __GLIBC__
760 return realloc (ptr, size);
761#else
762 /* some systems, notably openbsd and darwin, fail to properly 1397 /* some systems, notably openbsd and darwin, fail to properly
763 * implement realloc (x, 0) (as required by both ansi c-89 and 1398 * implement realloc (x, 0) (as required by both ansi c-89 and
764 * the single unix specification, so work around them here. 1399 * the single unix specification, so work around them here.
1400 * recently, also (at least) fedora and debian started breaking it,
1401 * despite documenting it otherwise.
765 */ 1402 */
766 1403
767 if (size) 1404 if (size)
768 return realloc (ptr, size); 1405 return realloc (ptr, size);
769 1406
770 free (ptr); 1407 free (ptr);
771 return 0; 1408 return 0;
772#endif
773} 1409}
774 1410
775static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1411static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
776 1412
777void ecb_cold 1413void ecb_cold
778ev_set_allocator (void *(*cb)(void *ptr, long size)) 1414ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
779{ 1415{
780 alloc = cb; 1416 alloc = cb;
781} 1417}
782 1418
783inline_speed void * 1419inline_speed void *
… …
871 #undef VAR 1507 #undef VAR
872 }; 1508 };
873 #include "ev_wrap.h" 1509 #include "ev_wrap.h"
874 1510
875 static struct ev_loop default_loop_struct; 1511 static struct ev_loop default_loop_struct;
876 struct ev_loop *ev_default_loop_ptr; 1512 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
877 1513
878#else 1514#else
879 1515
880 ev_tstamp ev_rt_now; 1516 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
881 #define VAR(name,decl) static decl; 1517 #define VAR(name,decl) static decl;
882 #include "ev_vars.h" 1518 #include "ev_vars.h"
883 #undef VAR 1519 #undef VAR
884 1520
885 static int ev_default_loop_ptr; 1521 static int ev_default_loop_ptr;
… …
900 1536
901/*****************************************************************************/ 1537/*****************************************************************************/
902 1538
903#ifndef EV_HAVE_EV_TIME 1539#ifndef EV_HAVE_EV_TIME
904ev_tstamp 1540ev_tstamp
905ev_time (void) 1541ev_time (void) EV_THROW
906{ 1542{
907#if EV_USE_REALTIME 1543#if EV_USE_REALTIME
908 if (expect_true (have_realtime)) 1544 if (expect_true (have_realtime))
909 { 1545 {
910 struct timespec ts; 1546 struct timespec ts;
… …
934 return ev_time (); 1570 return ev_time ();
935} 1571}
936 1572
937#if EV_MULTIPLICITY 1573#if EV_MULTIPLICITY
938ev_tstamp 1574ev_tstamp
939ev_now (EV_P) 1575ev_now (EV_P) EV_THROW
940{ 1576{
941 return ev_rt_now; 1577 return ev_rt_now;
942} 1578}
943#endif 1579#endif
944 1580
945void 1581void
946ev_sleep (ev_tstamp delay) 1582ev_sleep (ev_tstamp delay) EV_THROW
947{ 1583{
948 if (delay > 0.) 1584 if (delay > 0.)
949 { 1585 {
950#if EV_USE_NANOSLEEP 1586#if EV_USE_NANOSLEEP
951 struct timespec ts; 1587 struct timespec ts;
952 1588
953 EV_TS_SET (ts, delay); 1589 EV_TS_SET (ts, delay);
954 nanosleep (&ts, 0); 1590 nanosleep (&ts, 0);
955#elif defined(_WIN32) 1591#elif defined _WIN32
956 Sleep ((unsigned long)(delay * 1e3)); 1592 Sleep ((unsigned long)(delay * 1e3));
957#else 1593#else
958 struct timeval tv; 1594 struct timeval tv;
959 1595
960 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1596 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
979 1615
980 do 1616 do
981 ncur <<= 1; 1617 ncur <<= 1;
982 while (cnt > ncur); 1618 while (cnt > ncur);
983 1619
984 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1620 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
985 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1621 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
986 { 1622 {
987 ncur *= elem; 1623 ncur *= elem;
988 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1624 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
989 ncur = ncur - sizeof (void *) * 4; 1625 ncur = ncur - sizeof (void *) * 4;
… …
1032pendingcb (EV_P_ ev_prepare *w, int revents) 1668pendingcb (EV_P_ ev_prepare *w, int revents)
1033{ 1669{
1034} 1670}
1035 1671
1036void noinline 1672void noinline
1037ev_feed_event (EV_P_ void *w, int revents) 1673ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1038{ 1674{
1039 W w_ = (W)w; 1675 W w_ = (W)w;
1040 int pri = ABSPRI (w_); 1676 int pri = ABSPRI (w_);
1041 1677
1042 if (expect_false (w_->pending)) 1678 if (expect_false (w_->pending))
… …
1046 w_->pending = ++pendingcnt [pri]; 1682 w_->pending = ++pendingcnt [pri];
1047 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1683 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1048 pendings [pri][w_->pending - 1].w = w_; 1684 pendings [pri][w_->pending - 1].w = w_;
1049 pendings [pri][w_->pending - 1].events = revents; 1685 pendings [pri][w_->pending - 1].events = revents;
1050 } 1686 }
1687
1688 pendingpri = NUMPRI - 1;
1051} 1689}
1052 1690
1053inline_speed void 1691inline_speed void
1054feed_reverse (EV_P_ W w) 1692feed_reverse (EV_P_ W w)
1055{ 1693{
… …
1101 if (expect_true (!anfd->reify)) 1739 if (expect_true (!anfd->reify))
1102 fd_event_nocheck (EV_A_ fd, revents); 1740 fd_event_nocheck (EV_A_ fd, revents);
1103} 1741}
1104 1742
1105void 1743void
1106ev_feed_fd_event (EV_P_ int fd, int revents) 1744ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1107{ 1745{
1108 if (fd >= 0 && fd < anfdmax) 1746 if (fd >= 0 && fd < anfdmax)
1109 fd_event_nocheck (EV_A_ fd, revents); 1747 fd_event_nocheck (EV_A_ fd, revents);
1110} 1748}
1111 1749
… …
1430static void noinline ecb_cold 2068static void noinline ecb_cold
1431evpipe_init (EV_P) 2069evpipe_init (EV_P)
1432{ 2070{
1433 if (!ev_is_active (&pipe_w)) 2071 if (!ev_is_active (&pipe_w))
1434 { 2072 {
2073 int fds [2];
2074
1435# if EV_USE_EVENTFD 2075# if EV_USE_EVENTFD
2076 fds [0] = -1;
1436 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2077 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1437 if (evfd < 0 && errno == EINVAL) 2078 if (fds [1] < 0 && errno == EINVAL)
1438 evfd = eventfd (0, 0); 2079 fds [1] = eventfd (0, 0);
1439 2080
1440 if (evfd >= 0) 2081 if (fds [1] < 0)
2082# endif
1441 { 2083 {
2084 while (pipe (fds))
2085 ev_syserr ("(libev) error creating signal/async pipe");
2086
2087 fd_intern (fds [0]);
2088 }
2089
2090 fd_intern (fds [1]);
2091
1442 evpipe [0] = -1; 2092 evpipe [0] = fds [0];
1443 fd_intern (evfd); /* doing it twice doesn't hurt */ 2093
1444 ev_io_set (&pipe_w, evfd, EV_READ); 2094 if (evpipe [1] < 0)
2095 evpipe [1] = fds [1]; /* first call, set write fd */
2096 else
2097 {
2098 /* on subsequent calls, do not change evpipe [1] */
2099 /* so that evpipe_write can always rely on its value. */
2100 /* this branch does not do anything sensible on windows, */
2101 /* so must not be executed on windows */
2102
2103 dup2 (fds [1], evpipe [1]);
2104 close (fds [1]);
2105 }
2106
2107 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108 ev_io_start (EV_A_ &pipe_w);
2109 ev_unref (EV_A); /* watcher should not keep loop alive */
2110 }
2111}
2112
2113inline_speed void
2114evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2115{
2116 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2117
2118 if (expect_true (*flag))
2119 return;
2120
2121 *flag = 1;
2122 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2123
2124 pipe_write_skipped = 1;
2125
2126 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2127
2128 if (pipe_write_wanted)
2129 {
2130 int old_errno;
2131
2132 pipe_write_skipped = 0;
2133 ECB_MEMORY_FENCE_RELEASE;
2134
2135 old_errno = errno; /* save errno because write will clobber it */
2136
2137#if EV_USE_EVENTFD
2138 if (evpipe [0] < 0)
2139 {
2140 uint64_t counter = 1;
2141 write (evpipe [1], &counter, sizeof (uint64_t));
1445 } 2142 }
1446 else 2143 else
1447# endif 2144#endif
1448 { 2145 {
1449 while (pipe (evpipe)) 2146#ifdef _WIN32
1450 ev_syserr ("(libev) error creating signal/async pipe"); 2147 WSABUF buf;
1451 2148 DWORD sent;
1452 fd_intern (evpipe [0]); 2149 buf.buf = &buf;
1453 fd_intern (evpipe [1]); 2150 buf.len = 1;
1454 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2151 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1455 } 2152#else
1456
1457 ev_io_start (EV_A_ &pipe_w);
1458 ev_unref (EV_A); /* watcher should not keep loop alive */
1459 }
1460}
1461
1462inline_speed void
1463evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1464{
1465 if (expect_true (*flag))
1466 return;
1467
1468 *flag = 1;
1469
1470 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1471
1472 pipe_write_skipped = 1;
1473
1474 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1475
1476 if (pipe_write_wanted)
1477 {
1478 int old_errno;
1479
1480 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1481
1482 old_errno = errno; /* save errno because write will clobber it */
1483
1484#if EV_USE_EVENTFD
1485 if (evfd >= 0)
1486 {
1487 uint64_t counter = 1;
1488 write (evfd, &counter, sizeof (uint64_t));
1489 }
1490 else
1491#endif
1492 {
1493 /* win32 people keep sending patches that change this write() to send() */
1494 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1495 /* so when you think this write should be a send instead, please find out */
1496 /* where your send() is from - it's definitely not the microsoft send, and */
1497 /* tell me. thank you. */
1498 write (evpipe [1], &(evpipe [1]), 1); 2153 write (evpipe [1], &(evpipe [1]), 1);
2154#endif
1499 } 2155 }
1500 2156
1501 errno = old_errno; 2157 errno = old_errno;
1502 } 2158 }
1503} 2159}
… …
1510 int i; 2166 int i;
1511 2167
1512 if (revents & EV_READ) 2168 if (revents & EV_READ)
1513 { 2169 {
1514#if EV_USE_EVENTFD 2170#if EV_USE_EVENTFD
1515 if (evfd >= 0) 2171 if (evpipe [0] < 0)
1516 { 2172 {
1517 uint64_t counter; 2173 uint64_t counter;
1518 read (evfd, &counter, sizeof (uint64_t)); 2174 read (evpipe [1], &counter, sizeof (uint64_t));
1519 } 2175 }
1520 else 2176 else
1521#endif 2177#endif
1522 { 2178 {
1523 char dummy; 2179 char dummy[4];
1524 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2180#ifdef _WIN32
2181 WSABUF buf;
2182 DWORD recvd;
2183 DWORD flags = 0;
2184 buf.buf = dummy;
2185 buf.len = sizeof (dummy);
2186 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2187#else
1525 read (evpipe [0], &dummy, 1); 2188 read (evpipe [0], &dummy, sizeof (dummy));
2189#endif
1526 } 2190 }
1527 } 2191 }
1528 2192
1529 pipe_write_skipped = 0; 2193 pipe_write_skipped = 0;
2194
2195 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1530 2196
1531#if EV_SIGNAL_ENABLE 2197#if EV_SIGNAL_ENABLE
1532 if (sig_pending) 2198 if (sig_pending)
1533 { 2199 {
1534 sig_pending = 0; 2200 sig_pending = 0;
2201
2202 ECB_MEMORY_FENCE;
1535 2203
1536 for (i = EV_NSIG - 1; i--; ) 2204 for (i = EV_NSIG - 1; i--; )
1537 if (expect_false (signals [i].pending)) 2205 if (expect_false (signals [i].pending))
1538 ev_feed_signal_event (EV_A_ i + 1); 2206 ev_feed_signal_event (EV_A_ i + 1);
1539 } 2207 }
… …
1541 2209
1542#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1543 if (async_pending) 2211 if (async_pending)
1544 { 2212 {
1545 async_pending = 0; 2213 async_pending = 0;
2214
2215 ECB_MEMORY_FENCE;
1546 2216
1547 for (i = asynccnt; i--; ) 2217 for (i = asynccnt; i--; )
1548 if (asyncs [i]->sent) 2218 if (asyncs [i]->sent)
1549 { 2219 {
1550 asyncs [i]->sent = 0; 2220 asyncs [i]->sent = 0;
2221 ECB_MEMORY_FENCE_RELEASE;
1551 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1552 } 2223 }
1553 } 2224 }
1554#endif 2225#endif
1555} 2226}
1556 2227
1557/*****************************************************************************/ 2228/*****************************************************************************/
1558 2229
1559void 2230void
1560ev_feed_signal (int signum) 2231ev_feed_signal (int signum) EV_THROW
1561{ 2232{
1562#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
2234 ECB_MEMORY_FENCE_ACQUIRE;
1563 EV_P = signals [signum - 1].loop; 2235 EV_P = signals [signum - 1].loop;
1564 2236
1565 if (!EV_A) 2237 if (!EV_A)
1566 return; 2238 return;
1567#endif 2239#endif
1568 2240
1569 if (!ev_active (&pipe_w))
1570 return;
1571
1572 signals [signum - 1].pending = 1; 2241 signals [signum - 1].pending = 1;
1573 evpipe_write (EV_A_ &sig_pending); 2242 evpipe_write (EV_A_ &sig_pending);
1574} 2243}
1575 2244
1576static void 2245static void
… …
1582 2251
1583 ev_feed_signal (signum); 2252 ev_feed_signal (signum);
1584} 2253}
1585 2254
1586void noinline 2255void noinline
1587ev_feed_signal_event (EV_P_ int signum) 2256ev_feed_signal_event (EV_P_ int signum) EV_THROW
1588{ 2257{
1589 WL w; 2258 WL w;
1590 2259
1591 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2260 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1592 return; 2261 return;
1593 2262
1594 --signum; 2263 --signum;
1595 2264
1596#if EV_MULTIPLICITY 2265#if EV_MULTIPLICITY
… …
1600 if (expect_false (signals [signum].loop != EV_A)) 2269 if (expect_false (signals [signum].loop != EV_A))
1601 return; 2270 return;
1602#endif 2271#endif
1603 2272
1604 signals [signum].pending = 0; 2273 signals [signum].pending = 0;
2274 ECB_MEMORY_FENCE_RELEASE;
1605 2275
1606 for (w = signals [signum].head; w; w = w->next) 2276 for (w = signals [signum].head; w; w = w->next)
1607 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2277 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1608} 2278}
1609 2279
… …
1708#if EV_USE_SELECT 2378#if EV_USE_SELECT
1709# include "ev_select.c" 2379# include "ev_select.c"
1710#endif 2380#endif
1711 2381
1712int ecb_cold 2382int ecb_cold
1713ev_version_major (void) 2383ev_version_major (void) EV_THROW
1714{ 2384{
1715 return EV_VERSION_MAJOR; 2385 return EV_VERSION_MAJOR;
1716} 2386}
1717 2387
1718int ecb_cold 2388int ecb_cold
1719ev_version_minor (void) 2389ev_version_minor (void) EV_THROW
1720{ 2390{
1721 return EV_VERSION_MINOR; 2391 return EV_VERSION_MINOR;
1722} 2392}
1723 2393
1724/* return true if we are running with elevated privileges and should ignore env variables */ 2394/* return true if we are running with elevated privileges and should ignore env variables */
… …
1732 || getgid () != getegid (); 2402 || getgid () != getegid ();
1733#endif 2403#endif
1734} 2404}
1735 2405
1736unsigned int ecb_cold 2406unsigned int ecb_cold
1737ev_supported_backends (void) 2407ev_supported_backends (void) EV_THROW
1738{ 2408{
1739 unsigned int flags = 0; 2409 unsigned int flags = 0;
1740 2410
1741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2411 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1742 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2412 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1746 2416
1747 return flags; 2417 return flags;
1748} 2418}
1749 2419
1750unsigned int ecb_cold 2420unsigned int ecb_cold
1751ev_recommended_backends (void) 2421ev_recommended_backends (void) EV_THROW
1752{ 2422{
1753 unsigned int flags = ev_supported_backends (); 2423 unsigned int flags = ev_supported_backends ();
1754 2424
1755#ifndef __NetBSD__ 2425#ifndef __NetBSD__
1756 /* kqueue is borked on everything but netbsd apparently */ 2426 /* kqueue is borked on everything but netbsd apparently */
… …
1768 2438
1769 return flags; 2439 return flags;
1770} 2440}
1771 2441
1772unsigned int ecb_cold 2442unsigned int ecb_cold
1773ev_embeddable_backends (void) 2443ev_embeddable_backends (void) EV_THROW
1774{ 2444{
1775 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2445 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1776 2446
1777 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2447 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1778 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2448 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1780 2450
1781 return flags; 2451 return flags;
1782} 2452}
1783 2453
1784unsigned int 2454unsigned int
1785ev_backend (EV_P) 2455ev_backend (EV_P) EV_THROW
1786{ 2456{
1787 return backend; 2457 return backend;
1788} 2458}
1789 2459
1790#if EV_FEATURE_API 2460#if EV_FEATURE_API
1791unsigned int 2461unsigned int
1792ev_iteration (EV_P) 2462ev_iteration (EV_P) EV_THROW
1793{ 2463{
1794 return loop_count; 2464 return loop_count;
1795} 2465}
1796 2466
1797unsigned int 2467unsigned int
1798ev_depth (EV_P) 2468ev_depth (EV_P) EV_THROW
1799{ 2469{
1800 return loop_depth; 2470 return loop_depth;
1801} 2471}
1802 2472
1803void 2473void
1804ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2474ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1805{ 2475{
1806 io_blocktime = interval; 2476 io_blocktime = interval;
1807} 2477}
1808 2478
1809void 2479void
1810ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2480ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1811{ 2481{
1812 timeout_blocktime = interval; 2482 timeout_blocktime = interval;
1813} 2483}
1814 2484
1815void 2485void
1816ev_set_userdata (EV_P_ void *data) 2486ev_set_userdata (EV_P_ void *data) EV_THROW
1817{ 2487{
1818 userdata = data; 2488 userdata = data;
1819} 2489}
1820 2490
1821void * 2491void *
1822ev_userdata (EV_P) 2492ev_userdata (EV_P) EV_THROW
1823{ 2493{
1824 return userdata; 2494 return userdata;
1825} 2495}
1826 2496
1827void 2497void
1828ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2498ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1829{ 2499{
1830 invoke_cb = invoke_pending_cb; 2500 invoke_cb = invoke_pending_cb;
1831} 2501}
1832 2502
1833void 2503void
1834ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2504ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1835{ 2505{
1836 release_cb = release; 2506 release_cb = release;
1837 acquire_cb = acquire; 2507 acquire_cb = acquire;
1838} 2508}
1839#endif 2509#endif
1840 2510
1841/* initialise a loop structure, must be zero-initialised */ 2511/* initialise a loop structure, must be zero-initialised */
1842static void noinline ecb_cold 2512static void noinline ecb_cold
1843loop_init (EV_P_ unsigned int flags) 2513loop_init (EV_P_ unsigned int flags) EV_THROW
1844{ 2514{
1845 if (!backend) 2515 if (!backend)
1846 { 2516 {
1847 origflags = flags; 2517 origflags = flags;
1848 2518
… …
1893#if EV_ASYNC_ENABLE 2563#if EV_ASYNC_ENABLE
1894 async_pending = 0; 2564 async_pending = 0;
1895#endif 2565#endif
1896 pipe_write_skipped = 0; 2566 pipe_write_skipped = 0;
1897 pipe_write_wanted = 0; 2567 pipe_write_wanted = 0;
2568 evpipe [0] = -1;
2569 evpipe [1] = -1;
1898#if EV_USE_INOTIFY 2570#if EV_USE_INOTIFY
1899 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2571 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1900#endif 2572#endif
1901#if EV_USE_SIGNALFD 2573#if EV_USE_SIGNALFD
1902 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2574 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1953 EV_INVOKE_PENDING; 2625 EV_INVOKE_PENDING;
1954 } 2626 }
1955#endif 2627#endif
1956 2628
1957#if EV_CHILD_ENABLE 2629#if EV_CHILD_ENABLE
1958 if (ev_is_active (&childev)) 2630 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1959 { 2631 {
1960 ev_ref (EV_A); /* child watcher */ 2632 ev_ref (EV_A); /* child watcher */
1961 ev_signal_stop (EV_A_ &childev); 2633 ev_signal_stop (EV_A_ &childev);
1962 } 2634 }
1963#endif 2635#endif
… …
1965 if (ev_is_active (&pipe_w)) 2637 if (ev_is_active (&pipe_w))
1966 { 2638 {
1967 /*ev_ref (EV_A);*/ 2639 /*ev_ref (EV_A);*/
1968 /*ev_io_stop (EV_A_ &pipe_w);*/ 2640 /*ev_io_stop (EV_A_ &pipe_w);*/
1969 2641
1970#if EV_USE_EVENTFD
1971 if (evfd >= 0)
1972 close (evfd);
1973#endif
1974
1975 if (evpipe [0] >= 0)
1976 {
1977 EV_WIN32_CLOSE_FD (evpipe [0]); 2642 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1978 EV_WIN32_CLOSE_FD (evpipe [1]); 2643 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1979 }
1980 } 2644 }
1981 2645
1982#if EV_USE_SIGNALFD 2646#if EV_USE_SIGNALFD
1983 if (ev_is_active (&sigfd_w)) 2647 if (ev_is_active (&sigfd_w))
1984 close (sigfd); 2648 close (sigfd);
… …
2070#endif 2734#endif
2071#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
2072 infy_fork (EV_A); 2736 infy_fork (EV_A);
2073#endif 2737#endif
2074 2738
2739#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2075 if (ev_is_active (&pipe_w)) 2740 if (ev_is_active (&pipe_w))
2076 { 2741 {
2077 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2742 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2078 2743
2079 ev_ref (EV_A); 2744 ev_ref (EV_A);
2080 ev_io_stop (EV_A_ &pipe_w); 2745 ev_io_stop (EV_A_ &pipe_w);
2081 2746
2082#if EV_USE_EVENTFD
2083 if (evfd >= 0)
2084 close (evfd);
2085#endif
2086
2087 if (evpipe [0] >= 0) 2747 if (evpipe [0] >= 0)
2088 {
2089 EV_WIN32_CLOSE_FD (evpipe [0]); 2748 EV_WIN32_CLOSE_FD (evpipe [0]);
2090 EV_WIN32_CLOSE_FD (evpipe [1]);
2091 }
2092 2749
2093#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2094 evpipe_init (EV_A); 2750 evpipe_init (EV_A);
2095 /* now iterate over everything, in case we missed something */ 2751 /* iterate over everything, in case we missed something before */
2096 pipecb (EV_A_ &pipe_w, EV_READ); 2752 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2097#endif
2098 } 2753 }
2754#endif
2099 2755
2100 postfork = 0; 2756 postfork = 0;
2101} 2757}
2102 2758
2103#if EV_MULTIPLICITY 2759#if EV_MULTIPLICITY
2104 2760
2105struct ev_loop * ecb_cold 2761struct ev_loop * ecb_cold
2106ev_loop_new (unsigned int flags) 2762ev_loop_new (unsigned int flags) EV_THROW
2107{ 2763{
2108 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2764 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2109 2765
2110 memset (EV_A, 0, sizeof (struct ev_loop)); 2766 memset (EV_A, 0, sizeof (struct ev_loop));
2111 loop_init (EV_A_ flags); 2767 loop_init (EV_A_ flags);
… …
2155} 2811}
2156#endif 2812#endif
2157 2813
2158#if EV_FEATURE_API 2814#if EV_FEATURE_API
2159void ecb_cold 2815void ecb_cold
2160ev_verify (EV_P) 2816ev_verify (EV_P) EV_THROW
2161{ 2817{
2162#if EV_VERIFY 2818#if EV_VERIFY
2163 int i; 2819 int i;
2164 WL w; 2820 WL w, w2;
2165 2821
2166 assert (activecnt >= -1); 2822 assert (activecnt >= -1);
2167 2823
2168 assert (fdchangemax >= fdchangecnt); 2824 assert (fdchangemax >= fdchangecnt);
2169 for (i = 0; i < fdchangecnt; ++i) 2825 for (i = 0; i < fdchangecnt; ++i)
2170 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2826 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2171 2827
2172 assert (anfdmax >= 0); 2828 assert (anfdmax >= 0);
2173 for (i = 0; i < anfdmax; ++i) 2829 for (i = 0; i < anfdmax; ++i)
2830 {
2831 int j = 0;
2832
2174 for (w = anfds [i].head; w; w = w->next) 2833 for (w = w2 = anfds [i].head; w; w = w->next)
2175 { 2834 {
2176 verify_watcher (EV_A_ (W)w); 2835 verify_watcher (EV_A_ (W)w);
2836
2837 if (j++ & 1)
2838 {
2839 assert (("libev: io watcher list contains a loop", w != w2));
2840 w2 = w2->next;
2841 }
2842
2177 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2843 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2178 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2844 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2179 } 2845 }
2846 }
2180 2847
2181 assert (timermax >= timercnt); 2848 assert (timermax >= timercnt);
2182 verify_heap (EV_A_ timers, timercnt); 2849 verify_heap (EV_A_ timers, timercnt);
2183 2850
2184#if EV_PERIODIC_ENABLE 2851#if EV_PERIODIC_ENABLE
… …
2234#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
2235struct ev_loop * ecb_cold 2902struct ev_loop * ecb_cold
2236#else 2903#else
2237int 2904int
2238#endif 2905#endif
2239ev_default_loop (unsigned int flags) 2906ev_default_loop (unsigned int flags) EV_THROW
2240{ 2907{
2241 if (!ev_default_loop_ptr) 2908 if (!ev_default_loop_ptr)
2242 { 2909 {
2243#if EV_MULTIPLICITY 2910#if EV_MULTIPLICITY
2244 EV_P = ev_default_loop_ptr = &default_loop_struct; 2911 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2263 2930
2264 return ev_default_loop_ptr; 2931 return ev_default_loop_ptr;
2265} 2932}
2266 2933
2267void 2934void
2268ev_loop_fork (EV_P) 2935ev_loop_fork (EV_P) EV_THROW
2269{ 2936{
2270 postfork = 1; /* must be in line with ev_default_fork */ 2937 postfork = 1;
2271} 2938}
2272 2939
2273/*****************************************************************************/ 2940/*****************************************************************************/
2274 2941
2275void 2942void
… …
2277{ 2944{
2278 EV_CB_INVOKE ((W)w, revents); 2945 EV_CB_INVOKE ((W)w, revents);
2279} 2946}
2280 2947
2281unsigned int 2948unsigned int
2282ev_pending_count (EV_P) 2949ev_pending_count (EV_P) EV_THROW
2283{ 2950{
2284 int pri; 2951 int pri;
2285 unsigned int count = 0; 2952 unsigned int count = 0;
2286 2953
2287 for (pri = NUMPRI; pri--; ) 2954 for (pri = NUMPRI; pri--; )
… …
2291} 2958}
2292 2959
2293void noinline 2960void noinline
2294ev_invoke_pending (EV_P) 2961ev_invoke_pending (EV_P)
2295{ 2962{
2296 int pri; 2963 pendingpri = NUMPRI;
2297 2964
2298 for (pri = NUMPRI; pri--; ) 2965 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2966 {
2967 --pendingpri;
2968
2299 while (pendingcnt [pri]) 2969 while (pendingcnt [pendingpri])
2300 { 2970 {
2301 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2971 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2302 2972
2303 p->w->pending = 0; 2973 p->w->pending = 0;
2304 EV_CB_INVOKE (p->w, p->events); 2974 EV_CB_INVOKE (p->w, p->events);
2305 EV_FREQUENT_CHECK; 2975 EV_FREQUENT_CHECK;
2306 } 2976 }
2977 }
2307} 2978}
2308 2979
2309#if EV_IDLE_ENABLE 2980#if EV_IDLE_ENABLE
2310/* make idle watchers pending. this handles the "call-idle */ 2981/* make idle watchers pending. this handles the "call-idle */
2311/* only when higher priorities are idle" logic */ 2982/* only when higher priorities are idle" logic */
… …
2401{ 3072{
2402 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2403 3074
2404 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3075 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2405 { 3076 {
2406 int feed_count = 0;
2407
2408 do 3077 do
2409 { 3078 {
2410 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3079 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2411 3080
2412 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3081 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2546 3215
2547 mn_now = ev_rt_now; 3216 mn_now = ev_rt_now;
2548 } 3217 }
2549} 3218}
2550 3219
2551void 3220int
2552ev_run (EV_P_ int flags) 3221ev_run (EV_P_ int flags)
2553{ 3222{
2554#if EV_FEATURE_API 3223#if EV_FEATURE_API
2555 ++loop_depth; 3224 ++loop_depth;
2556#endif 3225#endif
… …
2617 time_update (EV_A_ 1e100); 3286 time_update (EV_A_ 1e100);
2618 3287
2619 /* from now on, we want a pipe-wake-up */ 3288 /* from now on, we want a pipe-wake-up */
2620 pipe_write_wanted = 1; 3289 pipe_write_wanted = 1;
2621 3290
2622 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */ 3291 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2623 3292
2624 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3293 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2625 { 3294 {
2626 waittime = MAX_BLOCKTIME; 3295 waittime = MAX_BLOCKTIME;
2627 3296
… …
2669#endif 3338#endif
2670 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3339 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2671 backend_poll (EV_A_ waittime); 3340 backend_poll (EV_A_ waittime);
2672 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3341 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2673 3342
2674 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3343 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2675 3344
3345 ECB_MEMORY_FENCE_ACQUIRE;
2676 if (pipe_write_skipped) 3346 if (pipe_write_skipped)
2677 { 3347 {
2678 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3348 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2679 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3349 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2680 } 3350 }
… …
2713 loop_done = EVBREAK_CANCEL; 3383 loop_done = EVBREAK_CANCEL;
2714 3384
2715#if EV_FEATURE_API 3385#if EV_FEATURE_API
2716 --loop_depth; 3386 --loop_depth;
2717#endif 3387#endif
3388
3389 return activecnt;
2718} 3390}
2719 3391
2720void 3392void
2721ev_break (EV_P_ int how) 3393ev_break (EV_P_ int how) EV_THROW
2722{ 3394{
2723 loop_done = how; 3395 loop_done = how;
2724} 3396}
2725 3397
2726void 3398void
2727ev_ref (EV_P) 3399ev_ref (EV_P) EV_THROW
2728{ 3400{
2729 ++activecnt; 3401 ++activecnt;
2730} 3402}
2731 3403
2732void 3404void
2733ev_unref (EV_P) 3405ev_unref (EV_P) EV_THROW
2734{ 3406{
2735 --activecnt; 3407 --activecnt;
2736} 3408}
2737 3409
2738void 3410void
2739ev_now_update (EV_P) 3411ev_now_update (EV_P) EV_THROW
2740{ 3412{
2741 time_update (EV_A_ 1e100); 3413 time_update (EV_A_ 1e100);
2742} 3414}
2743 3415
2744void 3416void
2745ev_suspend (EV_P) 3417ev_suspend (EV_P) EV_THROW
2746{ 3418{
2747 ev_now_update (EV_A); 3419 ev_now_update (EV_A);
2748} 3420}
2749 3421
2750void 3422void
2751ev_resume (EV_P) 3423ev_resume (EV_P) EV_THROW
2752{ 3424{
2753 ev_tstamp mn_prev = mn_now; 3425 ev_tstamp mn_prev = mn_now;
2754 3426
2755 ev_now_update (EV_A); 3427 ev_now_update (EV_A);
2756 timers_reschedule (EV_A_ mn_now - mn_prev); 3428 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2795 w->pending = 0; 3467 w->pending = 0;
2796 } 3468 }
2797} 3469}
2798 3470
2799int 3471int
2800ev_clear_pending (EV_P_ void *w) 3472ev_clear_pending (EV_P_ void *w) EV_THROW
2801{ 3473{
2802 W w_ = (W)w; 3474 W w_ = (W)w;
2803 int pending = w_->pending; 3475 int pending = w_->pending;
2804 3476
2805 if (expect_true (pending)) 3477 if (expect_true (pending))
… …
2838} 3510}
2839 3511
2840/*****************************************************************************/ 3512/*****************************************************************************/
2841 3513
2842void noinline 3514void noinline
2843ev_io_start (EV_P_ ev_io *w) 3515ev_io_start (EV_P_ ev_io *w) EV_THROW
2844{ 3516{
2845 int fd = w->fd; 3517 int fd = w->fd;
2846 3518
2847 if (expect_false (ev_is_active (w))) 3519 if (expect_false (ev_is_active (w)))
2848 return; 3520 return;
… …
2854 3526
2855 ev_start (EV_A_ (W)w, 1); 3527 ev_start (EV_A_ (W)w, 1);
2856 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3528 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2857 wlist_add (&anfds[fd].head, (WL)w); 3529 wlist_add (&anfds[fd].head, (WL)w);
2858 3530
3531 /* common bug, apparently */
3532 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3533
2859 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2860 w->events &= ~EV__IOFDSET; 3535 w->events &= ~EV__IOFDSET;
2861 3536
2862 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2863} 3538}
2864 3539
2865void noinline 3540void noinline
2866ev_io_stop (EV_P_ ev_io *w) 3541ev_io_stop (EV_P_ ev_io *w) EV_THROW
2867{ 3542{
2868 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2869 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2870 return; 3545 return;
2871 3546
… …
2880 3555
2881 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2882} 3557}
2883 3558
2884void noinline 3559void noinline
2885ev_timer_start (EV_P_ ev_timer *w) 3560ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2886{ 3561{
2887 if (expect_false (ev_is_active (w))) 3562 if (expect_false (ev_is_active (w)))
2888 return; 3563 return;
2889 3564
2890 ev_at (w) += mn_now; 3565 ev_at (w) += mn_now;
… …
2904 3579
2905 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2906} 3581}
2907 3582
2908void noinline 3583void noinline
2909ev_timer_stop (EV_P_ ev_timer *w) 3584ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2910{ 3585{
2911 clear_pending (EV_A_ (W)w); 3586 clear_pending (EV_A_ (W)w);
2912 if (expect_false (!ev_is_active (w))) 3587 if (expect_false (!ev_is_active (w)))
2913 return; 3588 return;
2914 3589
… …
2934 3609
2935 EV_FREQUENT_CHECK; 3610 EV_FREQUENT_CHECK;
2936} 3611}
2937 3612
2938void noinline 3613void noinline
2939ev_timer_again (EV_P_ ev_timer *w) 3614ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2940{ 3615{
2941 EV_FREQUENT_CHECK; 3616 EV_FREQUENT_CHECK;
3617
3618 clear_pending (EV_A_ (W)w);
2942 3619
2943 if (ev_is_active (w)) 3620 if (ev_is_active (w))
2944 { 3621 {
2945 if (w->repeat) 3622 if (w->repeat)
2946 { 3623 {
… …
2959 3636
2960 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2961} 3638}
2962 3639
2963ev_tstamp 3640ev_tstamp
2964ev_timer_remaining (EV_P_ ev_timer *w) 3641ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2965{ 3642{
2966 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3643 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2967} 3644}
2968 3645
2969#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2970void noinline 3647void noinline
2971ev_periodic_start (EV_P_ ev_periodic *w) 3648ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2972{ 3649{
2973 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2974 return; 3651 return;
2975 3652
2976 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
… …
2996 3673
2997 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3674 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2998} 3675}
2999 3676
3000void noinline 3677void noinline
3001ev_periodic_stop (EV_P_ ev_periodic *w) 3678ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3002{ 3679{
3003 clear_pending (EV_A_ (W)w); 3680 clear_pending (EV_A_ (W)w);
3004 if (expect_false (!ev_is_active (w))) 3681 if (expect_false (!ev_is_active (w)))
3005 return; 3682 return;
3006 3683
… …
3024 3701
3025 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
3026} 3703}
3027 3704
3028void noinline 3705void noinline
3029ev_periodic_again (EV_P_ ev_periodic *w) 3706ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3030{ 3707{
3031 /* TODO: use adjustheap and recalculation */ 3708 /* TODO: use adjustheap and recalculation */
3032 ev_periodic_stop (EV_A_ w); 3709 ev_periodic_stop (EV_A_ w);
3033 ev_periodic_start (EV_A_ w); 3710 ev_periodic_start (EV_A_ w);
3034} 3711}
… …
3039#endif 3716#endif
3040 3717
3041#if EV_SIGNAL_ENABLE 3718#if EV_SIGNAL_ENABLE
3042 3719
3043void noinline 3720void noinline
3044ev_signal_start (EV_P_ ev_signal *w) 3721ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3045{ 3722{
3046 if (expect_false (ev_is_active (w))) 3723 if (expect_false (ev_is_active (w)))
3047 return; 3724 return;
3048 3725
3049 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3726 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3051#if EV_MULTIPLICITY 3728#if EV_MULTIPLICITY
3052 assert (("libev: a signal must not be attached to two different loops", 3729 assert (("libev: a signal must not be attached to two different loops",
3053 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3730 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3054 3731
3055 signals [w->signum - 1].loop = EV_A; 3732 signals [w->signum - 1].loop = EV_A;
3733 ECB_MEMORY_FENCE_RELEASE;
3056#endif 3734#endif
3057 3735
3058 EV_FREQUENT_CHECK; 3736 EV_FREQUENT_CHECK;
3059 3737
3060#if EV_USE_SIGNALFD 3738#if EV_USE_SIGNALFD
… …
3120 3798
3121 EV_FREQUENT_CHECK; 3799 EV_FREQUENT_CHECK;
3122} 3800}
3123 3801
3124void noinline 3802void noinline
3125ev_signal_stop (EV_P_ ev_signal *w) 3803ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3126{ 3804{
3127 clear_pending (EV_A_ (W)w); 3805 clear_pending (EV_A_ (W)w);
3128 if (expect_false (!ev_is_active (w))) 3806 if (expect_false (!ev_is_active (w)))
3129 return; 3807 return;
3130 3808
… …
3161#endif 3839#endif
3162 3840
3163#if EV_CHILD_ENABLE 3841#if EV_CHILD_ENABLE
3164 3842
3165void 3843void
3166ev_child_start (EV_P_ ev_child *w) 3844ev_child_start (EV_P_ ev_child *w) EV_THROW
3167{ 3845{
3168#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
3169 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3847 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3170#endif 3848#endif
3171 if (expect_false (ev_is_active (w))) 3849 if (expect_false (ev_is_active (w)))
… …
3178 3856
3179 EV_FREQUENT_CHECK; 3857 EV_FREQUENT_CHECK;
3180} 3858}
3181 3859
3182void 3860void
3183ev_child_stop (EV_P_ ev_child *w) 3861ev_child_stop (EV_P_ ev_child *w) EV_THROW
3184{ 3862{
3185 clear_pending (EV_A_ (W)w); 3863 clear_pending (EV_A_ (W)w);
3186 if (expect_false (!ev_is_active (w))) 3864 if (expect_false (!ev_is_active (w)))
3187 return; 3865 return;
3188 3866
… …
3355} 4033}
3356 4034
3357inline_size int 4035inline_size int
3358infy_newfd (void) 4036infy_newfd (void)
3359{ 4037{
3360#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4038#if defined IN_CLOEXEC && defined IN_NONBLOCK
3361 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4039 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3362 if (fd >= 0) 4040 if (fd >= 0)
3363 return fd; 4041 return fd;
3364#endif 4042#endif
3365 return inotify_init (); 4043 return inotify_init ();
… …
3440#else 4118#else
3441# define EV_LSTAT(p,b) lstat (p, b) 4119# define EV_LSTAT(p,b) lstat (p, b)
3442#endif 4120#endif
3443 4121
3444void 4122void
3445ev_stat_stat (EV_P_ ev_stat *w) 4123ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3446{ 4124{
3447 if (lstat (w->path, &w->attr) < 0) 4125 if (lstat (w->path, &w->attr) < 0)
3448 w->attr.st_nlink = 0; 4126 w->attr.st_nlink = 0;
3449 else if (!w->attr.st_nlink) 4127 else if (!w->attr.st_nlink)
3450 w->attr.st_nlink = 1; 4128 w->attr.st_nlink = 1;
… …
3489 ev_feed_event (EV_A_ w, EV_STAT); 4167 ev_feed_event (EV_A_ w, EV_STAT);
3490 } 4168 }
3491} 4169}
3492 4170
3493void 4171void
3494ev_stat_start (EV_P_ ev_stat *w) 4172ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3495{ 4173{
3496 if (expect_false (ev_is_active (w))) 4174 if (expect_false (ev_is_active (w)))
3497 return; 4175 return;
3498 4176
3499 ev_stat_stat (EV_A_ w); 4177 ev_stat_stat (EV_A_ w);
… …
3520 4198
3521 EV_FREQUENT_CHECK; 4199 EV_FREQUENT_CHECK;
3522} 4200}
3523 4201
3524void 4202void
3525ev_stat_stop (EV_P_ ev_stat *w) 4203ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3526{ 4204{
3527 clear_pending (EV_A_ (W)w); 4205 clear_pending (EV_A_ (W)w);
3528 if (expect_false (!ev_is_active (w))) 4206 if (expect_false (!ev_is_active (w)))
3529 return; 4207 return;
3530 4208
… …
3546} 4224}
3547#endif 4225#endif
3548 4226
3549#if EV_IDLE_ENABLE 4227#if EV_IDLE_ENABLE
3550void 4228void
3551ev_idle_start (EV_P_ ev_idle *w) 4229ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3552{ 4230{
3553 if (expect_false (ev_is_active (w))) 4231 if (expect_false (ev_is_active (w)))
3554 return; 4232 return;
3555 4233
3556 pri_adjust (EV_A_ (W)w); 4234 pri_adjust (EV_A_ (W)w);
… …
3569 4247
3570 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3571} 4249}
3572 4250
3573void 4251void
3574ev_idle_stop (EV_P_ ev_idle *w) 4252ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3575{ 4253{
3576 clear_pending (EV_A_ (W)w); 4254 clear_pending (EV_A_ (W)w);
3577 if (expect_false (!ev_is_active (w))) 4255 if (expect_false (!ev_is_active (w)))
3578 return; 4256 return;
3579 4257
… …
3593} 4271}
3594#endif 4272#endif
3595 4273
3596#if EV_PREPARE_ENABLE 4274#if EV_PREPARE_ENABLE
3597void 4275void
3598ev_prepare_start (EV_P_ ev_prepare *w) 4276ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3599{ 4277{
3600 if (expect_false (ev_is_active (w))) 4278 if (expect_false (ev_is_active (w)))
3601 return; 4279 return;
3602 4280
3603 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
… …
3608 4286
3609 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
3610} 4288}
3611 4289
3612void 4290void
3613ev_prepare_stop (EV_P_ ev_prepare *w) 4291ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3614{ 4292{
3615 clear_pending (EV_A_ (W)w); 4293 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 4294 if (expect_false (!ev_is_active (w)))
3617 return; 4295 return;
3618 4296
… …
3631} 4309}
3632#endif 4310#endif
3633 4311
3634#if EV_CHECK_ENABLE 4312#if EV_CHECK_ENABLE
3635void 4313void
3636ev_check_start (EV_P_ ev_check *w) 4314ev_check_start (EV_P_ ev_check *w) EV_THROW
3637{ 4315{
3638 if (expect_false (ev_is_active (w))) 4316 if (expect_false (ev_is_active (w)))
3639 return; 4317 return;
3640 4318
3641 EV_FREQUENT_CHECK; 4319 EV_FREQUENT_CHECK;
… …
3646 4324
3647 EV_FREQUENT_CHECK; 4325 EV_FREQUENT_CHECK;
3648} 4326}
3649 4327
3650void 4328void
3651ev_check_stop (EV_P_ ev_check *w) 4329ev_check_stop (EV_P_ ev_check *w) EV_THROW
3652{ 4330{
3653 clear_pending (EV_A_ (W)w); 4331 clear_pending (EV_A_ (W)w);
3654 if (expect_false (!ev_is_active (w))) 4332 if (expect_false (!ev_is_active (w)))
3655 return; 4333 return;
3656 4334
… …
3669} 4347}
3670#endif 4348#endif
3671 4349
3672#if EV_EMBED_ENABLE 4350#if EV_EMBED_ENABLE
3673void noinline 4351void noinline
3674ev_embed_sweep (EV_P_ ev_embed *w) 4352ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3675{ 4353{
3676 ev_run (w->other, EVRUN_NOWAIT); 4354 ev_run (w->other, EVRUN_NOWAIT);
3677} 4355}
3678 4356
3679static void 4357static void
… …
3727 ev_idle_stop (EV_A_ idle); 4405 ev_idle_stop (EV_A_ idle);
3728} 4406}
3729#endif 4407#endif
3730 4408
3731void 4409void
3732ev_embed_start (EV_P_ ev_embed *w) 4410ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3733{ 4411{
3734 if (expect_false (ev_is_active (w))) 4412 if (expect_false (ev_is_active (w)))
3735 return; 4413 return;
3736 4414
3737 { 4415 {
… …
3758 4436
3759 EV_FREQUENT_CHECK; 4437 EV_FREQUENT_CHECK;
3760} 4438}
3761 4439
3762void 4440void
3763ev_embed_stop (EV_P_ ev_embed *w) 4441ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3764{ 4442{
3765 clear_pending (EV_A_ (W)w); 4443 clear_pending (EV_A_ (W)w);
3766 if (expect_false (!ev_is_active (w))) 4444 if (expect_false (!ev_is_active (w)))
3767 return; 4445 return;
3768 4446
… …
3778} 4456}
3779#endif 4457#endif
3780 4458
3781#if EV_FORK_ENABLE 4459#if EV_FORK_ENABLE
3782void 4460void
3783ev_fork_start (EV_P_ ev_fork *w) 4461ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3784{ 4462{
3785 if (expect_false (ev_is_active (w))) 4463 if (expect_false (ev_is_active (w)))
3786 return; 4464 return;
3787 4465
3788 EV_FREQUENT_CHECK; 4466 EV_FREQUENT_CHECK;
… …
3793 4471
3794 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3795} 4473}
3796 4474
3797void 4475void
3798ev_fork_stop (EV_P_ ev_fork *w) 4476ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3799{ 4477{
3800 clear_pending (EV_A_ (W)w); 4478 clear_pending (EV_A_ (W)w);
3801 if (expect_false (!ev_is_active (w))) 4479 if (expect_false (!ev_is_active (w)))
3802 return; 4480 return;
3803 4481
… …
3816} 4494}
3817#endif 4495#endif
3818 4496
3819#if EV_CLEANUP_ENABLE 4497#if EV_CLEANUP_ENABLE
3820void 4498void
3821ev_cleanup_start (EV_P_ ev_cleanup *w) 4499ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3822{ 4500{
3823 if (expect_false (ev_is_active (w))) 4501 if (expect_false (ev_is_active (w)))
3824 return; 4502 return;
3825 4503
3826 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
… …
3833 ev_unref (EV_A); 4511 ev_unref (EV_A);
3834 EV_FREQUENT_CHECK; 4512 EV_FREQUENT_CHECK;
3835} 4513}
3836 4514
3837void 4515void
3838ev_cleanup_stop (EV_P_ ev_cleanup *w) 4516ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3839{ 4517{
3840 clear_pending (EV_A_ (W)w); 4518 clear_pending (EV_A_ (W)w);
3841 if (expect_false (!ev_is_active (w))) 4519 if (expect_false (!ev_is_active (w)))
3842 return; 4520 return;
3843 4521
… …
3857} 4535}
3858#endif 4536#endif
3859 4537
3860#if EV_ASYNC_ENABLE 4538#if EV_ASYNC_ENABLE
3861void 4539void
3862ev_async_start (EV_P_ ev_async *w) 4540ev_async_start (EV_P_ ev_async *w) EV_THROW
3863{ 4541{
3864 if (expect_false (ev_is_active (w))) 4542 if (expect_false (ev_is_active (w)))
3865 return; 4543 return;
3866 4544
3867 w->sent = 0; 4545 w->sent = 0;
… …
3876 4554
3877 EV_FREQUENT_CHECK; 4555 EV_FREQUENT_CHECK;
3878} 4556}
3879 4557
3880void 4558void
3881ev_async_stop (EV_P_ ev_async *w) 4559ev_async_stop (EV_P_ ev_async *w) EV_THROW
3882{ 4560{
3883 clear_pending (EV_A_ (W)w); 4561 clear_pending (EV_A_ (W)w);
3884 if (expect_false (!ev_is_active (w))) 4562 if (expect_false (!ev_is_active (w)))
3885 return; 4563 return;
3886 4564
… …
3897 4575
3898 EV_FREQUENT_CHECK; 4576 EV_FREQUENT_CHECK;
3899} 4577}
3900 4578
3901void 4579void
3902ev_async_send (EV_P_ ev_async *w) 4580ev_async_send (EV_P_ ev_async *w) EV_THROW
3903{ 4581{
3904 w->sent = 1; 4582 w->sent = 1;
3905 evpipe_write (EV_A_ &async_pending); 4583 evpipe_write (EV_A_ &async_pending);
3906} 4584}
3907#endif 4585#endif
… …
3944 4622
3945 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4623 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3946} 4624}
3947 4625
3948void 4626void
3949ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4627ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3950{ 4628{
3951 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4629 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3952 4630
3953 if (expect_false (!once)) 4631 if (expect_false (!once))
3954 { 4632 {
… …
3976 4654
3977/*****************************************************************************/ 4655/*****************************************************************************/
3978 4656
3979#if EV_WALK_ENABLE 4657#if EV_WALK_ENABLE
3980void ecb_cold 4658void ecb_cold
3981ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4659ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3982{ 4660{
3983 int i, j; 4661 int i, j;
3984 ev_watcher_list *wl, *wn; 4662 ev_watcher_list *wl, *wn;
3985 4663
3986 if (types & (EV_IO | EV_EMBED)) 4664 if (types & (EV_IO | EV_EMBED))
… …
4029 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4707 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4030#endif 4708#endif
4031 4709
4032#if EV_IDLE_ENABLE 4710#if EV_IDLE_ENABLE
4033 if (types & EV_IDLE) 4711 if (types & EV_IDLE)
4034 for (j = NUMPRI; i--; ) 4712 for (j = NUMPRI; j--; )
4035 for (i = idlecnt [j]; i--; ) 4713 for (i = idlecnt [j]; i--; )
4036 cb (EV_A_ EV_IDLE, idles [j][i]); 4714 cb (EV_A_ EV_IDLE, idles [j][i]);
4037#endif 4715#endif
4038 4716
4039#if EV_FORK_ENABLE 4717#if EV_FORK_ENABLE
… …
4092 4770
4093#if EV_MULTIPLICITY 4771#if EV_MULTIPLICITY
4094 #include "ev_wrap.h" 4772 #include "ev_wrap.h"
4095#endif 4773#endif
4096 4774
4097EV_CPP(})
4098

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