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Comparing libev/ev.c (file contents):
Revision 1.379 by root, Sun Jun 19 17:55:13 2011 UTC vs.
Revision 1.441 by root, Wed May 30 15:45:40 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 0x00010001
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 typedef intptr_t ptrdiff_t;
536#else
537 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU
539 #define ECB_PTRSIZE 8
540 #else
541 #define ECB_PTRSIZE 4
542 #endif
543#endif
471 544
472/* many compilers define _GNUC_ to some versions but then only implement 545/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 546 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 547 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 548 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 549 * 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. 550 * an issue with that they should have done it right in the first place.
478 */ 551 */
479#ifndef ECB_GCC_VERSION 552#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 554 #define ECB_GCC_VERSION(major,minor) 0
482 #else 555 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif 557 #endif
485#endif 558#endif
559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573 #define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
631 #elif defined _WIN32
632 #include <WinNT.h>
633 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
634 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
635 #include <mbarrier.h>
636 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
637 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
638 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
639 #elif __xlC__
640 #define ECB_MEMORY_FENCE __sync ()
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
652 #endif
653#endif
654
655#ifndef ECB_MEMORY_FENCE
656 #if !ECB_AVOID_PTHREADS
657 /*
658 * if you get undefined symbol references to pthread_mutex_lock,
659 * or failure to find pthread.h, then you should implement
660 * the ECB_MEMORY_FENCE operations for your cpu/compiler
661 * OR provide pthread.h and link against the posix thread library
662 * of your system.
663 */
664 #include <pthread.h>
665 #define ECB_NEEDS_PTHREADS 1
666 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
667
668 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
669 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
670 #endif
671#endif
672
673#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
674 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
675#endif
676
677#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif
680
681/*****************************************************************************/
486 682
487#if __cplusplus 683#if __cplusplus
488 #define ecb_inline static inline 684 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 685#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 686 #define ecb_inline static __inline__
491#elif ECB_C99 687#elif ECB_C99
492 #define ecb_inline static inline 688 #define ecb_inline static inline
493#else 689#else
494 #define ecb_inline static 690 #define ecb_inline static
495#endif 691#endif
692
693#if ECB_GCC_VERSION(3,3)
694 #define ecb_restrict __restrict__
695#elif ECB_C99
696 #define ecb_restrict restrict
697#else
698 #define ecb_restrict
699#endif
700
701typedef int ecb_bool;
702
703#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a
706#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
707
708#define ecb_function_ ecb_inline
496 709
497#if ECB_GCC_VERSION(3,1) 710#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist) 711 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr) 712 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 713 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
504 #define ecb_is_constant(expr) 0 717 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr) 718 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality) 719 #define ecb_prefetch(addr,rw,locality)
507#endif 720#endif
508 721
722/* no emulation for ecb_decltype */
723#if ECB_GCC_VERSION(4,5)
724 #define ecb_decltype(x) __decltype(x)
725#elif ECB_GCC_VERSION(3,0)
726 #define ecb_decltype(x) __typeof(x)
727#endif
728
509#define ecb_noinline ecb_attribute ((__noinline__)) 729#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__)) 730#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__)) 731#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__)) 732#define ecb_pure ecb_attribute ((__pure__))
733
734#if ECB_C11
735 #define ecb_noreturn _Noreturn
736#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif
514 739
515#if ECB_GCC_VERSION(4,3) 740#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__)) 741 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__)) 742 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__)) 743 #define ecb_cold ecb_attribute ((__cold__))
525/* put around conditional expressions if you are very sure that the */ 750/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */ 751/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */ 752/* booleans, not the expression. */
528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 753#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 754#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */ 755/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr)
758
759/* count trailing zero bits and count # of one bits */
760#if ECB_GCC_VERSION(3,4)
761 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */
768#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
770 ecb_function_ int
771 ecb_ctz32 (uint32_t x)
772 {
773 int r = 0;
774
775 x &= ~x + 1; /* this isolates the lowest bit */
776
777#if ECB_branchless_on_i386
778 r += !!(x & 0xaaaaaaaa) << 0;
779 r += !!(x & 0xcccccccc) << 1;
780 r += !!(x & 0xf0f0f0f0) << 2;
781 r += !!(x & 0xff00ff00) << 3;
782 r += !!(x & 0xffff0000) << 4;
783#else
784 if (x & 0xaaaaaaaa) r += 1;
785 if (x & 0xcccccccc) r += 2;
786 if (x & 0xf0f0f0f0) r += 4;
787 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16;
789#endif
790
791 return r;
792 }
793
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
795 ecb_function_ int
796 ecb_ctz64 (uint64_t x)
797 {
798 int shift = x & 0xffffffffU ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift;
800 }
801
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
803 ecb_function_ int
804 ecb_popcount32 (uint32_t x)
805 {
806 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101;
810
811 return x >> 24;
812 }
813
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
815 ecb_function_ int ecb_ld32 (uint32_t x)
816 {
817 int r = 0;
818
819 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; }
824
825 return r;
826 }
827
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
829 ecb_function_ int ecb_ld64 (uint64_t x)
830 {
831 int r = 0;
832
833 if (x >> 32) { x >>= 32; r += 32; }
834
835 return r + ecb_ld32 (x);
836 }
837#endif
838
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
846{
847 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849}
850
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
853{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8);
858
859 return x;
860}
861
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
864{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
869 x = ( x >> 16 ) | ( x << 16);
870
871 return x;
872}
873
874/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
877ecb_function_ int
878ecb_popcount64 (uint64_t x)
879{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881}
882
883ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
884ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
885ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
886ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
887ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
888ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
889ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
890ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
891
892ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
893ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
894ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
895ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
896ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
897ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
898ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
899ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
900
901#if ECB_GCC_VERSION(4,3)
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
903 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #define ecb_bswap64(x) __builtin_bswap64 (x)
905#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
907 ecb_function_ uint16_t
908 ecb_bswap16 (uint16_t x)
909 {
910 return ecb_rotl16 (x, 8);
911 }
912
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
914 ecb_function_ uint32_t
915 ecb_bswap32 (uint32_t x)
916 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 }
919
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
921 ecb_function_ uint64_t
922 ecb_bswap64 (uint64_t x)
923 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 }
926#endif
927
928#if ECB_GCC_VERSION(4,5)
929 #define ecb_unreachable() __builtin_unreachable ()
930#else
931 /* this seems to work fine, but gcc always emits a warning for it :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn;
933 ecb_inline void ecb_unreachable (void) { }
934#endif
935
936/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
938
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
940ecb_inline unsigned char
941ecb_byteorder_helper (void)
942{
943 const uint32_t u = 0x11223344;
944 return *(unsigned char *)&u;
945}
946
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
948ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
950ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
951
952#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
954#else
955 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
956#endif
957
958#if __cplusplus
959 template<typename T>
960 static inline T ecb_div_rd (T val, T div)
961 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 }
964 template<typename T>
965 static inline T ecb_div_ru (T val, T div)
966 {
967 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
968 }
969#else
970 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
971 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
972#endif
973
974#if ecb_cplusplus_does_not_suck
975 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
976 template<typename T, int N>
977 static inline int ecb_array_length (const T (&arr)[N])
978 {
979 return N;
980 }
981#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif
984
985#endif
986
987/* ECB.H END */
988
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
990/* if your architecture doesn't need memory fences, e.g. because it is
991 * single-cpu/core, or if you use libev in a project that doesn't use libev
992 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
993 * libev, in which cases the memory fences become nops.
994 * alternatively, you can remove this #error and link against libpthread,
995 * which will then provide the memory fences.
996 */
997# error "memory fences not defined for your architecture, please report"
998#endif
999
1000#ifndef ECB_MEMORY_FENCE
1001# define ECB_MEMORY_FENCE do { } while (0)
1002# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1003# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1004#endif
531 1005
532#define expect_false(cond) ecb_expect_false (cond) 1006#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond) 1007#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline 1008#define noinline ecb_noinline
535 1009
681{ 1155{
682 write (STDERR_FILENO, msg, strlen (msg)); 1156 write (STDERR_FILENO, msg, strlen (msg));
683} 1157}
684#endif 1158#endif
685 1159
686static void (*syserr_cb)(const char *msg); 1160static void (*syserr_cb)(const char *msg) EV_THROW;
687 1161
688void ecb_cold 1162void ecb_cold
689ev_set_syserr_cb (void (*cb)(const char *msg)) 1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
690{ 1164{
691 syserr_cb = cb; 1165 syserr_cb = cb;
692} 1166}
693 1167
694static void noinline ecb_cold 1168static void noinline ecb_cold
712 abort (); 1186 abort ();
713 } 1187 }
714} 1188}
715 1189
716static void * 1190static void *
717ev_realloc_emul (void *ptr, long size) 1191ev_realloc_emul (void *ptr, long size) EV_THROW
718{ 1192{
719#if __GLIBC__ 1193#if __GLIBC__
720 return realloc (ptr, size); 1194 return realloc (ptr, size);
721#else 1195#else
722 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
730 free (ptr); 1204 free (ptr);
731 return 0; 1205 return 0;
732#endif 1206#endif
733} 1207}
734 1208
735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
736 1210
737void ecb_cold 1211void ecb_cold
738ev_set_allocator (void *(*cb)(void *ptr, long size)) 1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
739{ 1213{
740 alloc = cb; 1214 alloc = cb;
741} 1215}
742 1216
743inline_speed void * 1217inline_speed void *
831 #undef VAR 1305 #undef VAR
832 }; 1306 };
833 #include "ev_wrap.h" 1307 #include "ev_wrap.h"
834 1308
835 static struct ev_loop default_loop_struct; 1309 static struct ev_loop default_loop_struct;
836 struct ev_loop *ev_default_loop_ptr; 1310 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
837 1311
838#else 1312#else
839 1313
840 ev_tstamp ev_rt_now; 1314 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
841 #define VAR(name,decl) static decl; 1315 #define VAR(name,decl) static decl;
842 #include "ev_vars.h" 1316 #include "ev_vars.h"
843 #undef VAR 1317 #undef VAR
844 1318
845 static int ev_default_loop_ptr; 1319 static int ev_default_loop_ptr;
860 1334
861/*****************************************************************************/ 1335/*****************************************************************************/
862 1336
863#ifndef EV_HAVE_EV_TIME 1337#ifndef EV_HAVE_EV_TIME
864ev_tstamp 1338ev_tstamp
865ev_time (void) 1339ev_time (void) EV_THROW
866{ 1340{
867#if EV_USE_REALTIME 1341#if EV_USE_REALTIME
868 if (expect_true (have_realtime)) 1342 if (expect_true (have_realtime))
869 { 1343 {
870 struct timespec ts; 1344 struct timespec ts;
894 return ev_time (); 1368 return ev_time ();
895} 1369}
896 1370
897#if EV_MULTIPLICITY 1371#if EV_MULTIPLICITY
898ev_tstamp 1372ev_tstamp
899ev_now (EV_P) 1373ev_now (EV_P) EV_THROW
900{ 1374{
901 return ev_rt_now; 1375 return ev_rt_now;
902} 1376}
903#endif 1377#endif
904 1378
905void 1379void
906ev_sleep (ev_tstamp delay) 1380ev_sleep (ev_tstamp delay) EV_THROW
907{ 1381{
908 if (delay > 0.) 1382 if (delay > 0.)
909 { 1383 {
910#if EV_USE_NANOSLEEP 1384#if EV_USE_NANOSLEEP
911 struct timespec ts; 1385 struct timespec ts;
912 1386
913 EV_TS_SET (ts, delay); 1387 EV_TS_SET (ts, delay);
914 nanosleep (&ts, 0); 1388 nanosleep (&ts, 0);
915#elif defined(_WIN32) 1389#elif defined _WIN32
916 Sleep ((unsigned long)(delay * 1e3)); 1390 Sleep ((unsigned long)(delay * 1e3));
917#else 1391#else
918 struct timeval tv; 1392 struct timeval tv;
919 1393
920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
939 1413
940 do 1414 do
941 ncur <<= 1; 1415 ncur <<= 1;
942 while (cnt > ncur); 1416 while (cnt > ncur);
943 1417
944 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1418 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
945 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1419 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946 { 1420 {
947 ncur *= elem; 1421 ncur *= elem;
948 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1422 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
949 ncur = ncur - sizeof (void *) * 4; 1423 ncur = ncur - sizeof (void *) * 4;
964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1438 memset ((void *)(base), 0, sizeof (*(base)) * (count))
965 1439
966#define array_needsize(type,base,cur,cnt,init) \ 1440#define array_needsize(type,base,cur,cnt,init) \
967 if (expect_false ((cnt) > (cur))) \ 1441 if (expect_false ((cnt) > (cur))) \
968 { \ 1442 { \
969 int ocur_ = (cur); \ 1443 int ecb_unused ocur_ = (cur); \
970 (base) = (type *)array_realloc \ 1444 (base) = (type *)array_realloc \
971 (sizeof (type), (base), &(cur), (cnt)); \ 1445 (sizeof (type), (base), &(cur), (cnt)); \
972 init ((base) + (ocur_), (cur) - ocur_); \ 1446 init ((base) + (ocur_), (cur) - ocur_); \
973 } 1447 }
974 1448
992pendingcb (EV_P_ ev_prepare *w, int revents) 1466pendingcb (EV_P_ ev_prepare *w, int revents)
993{ 1467{
994} 1468}
995 1469
996void noinline 1470void noinline
997ev_feed_event (EV_P_ void *w, int revents) 1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW
998{ 1472{
999 W w_ = (W)w; 1473 W w_ = (W)w;
1000 int pri = ABSPRI (w_); 1474 int pri = ABSPRI (w_);
1001 1475
1002 if (expect_false (w_->pending)) 1476 if (expect_false (w_->pending))
1006 w_->pending = ++pendingcnt [pri]; 1480 w_->pending = ++pendingcnt [pri];
1007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1008 pendings [pri][w_->pending - 1].w = w_; 1482 pendings [pri][w_->pending - 1].w = w_;
1009 pendings [pri][w_->pending - 1].events = revents; 1483 pendings [pri][w_->pending - 1].events = revents;
1010 } 1484 }
1485
1486 pendingpri = NUMPRI - 1;
1011} 1487}
1012 1488
1013inline_speed void 1489inline_speed void
1014feed_reverse (EV_P_ W w) 1490feed_reverse (EV_P_ W w)
1015{ 1491{
1061 if (expect_true (!anfd->reify)) 1537 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents); 1538 fd_event_nocheck (EV_A_ fd, revents);
1063} 1539}
1064 1540
1065void 1541void
1066ev_feed_fd_event (EV_P_ int fd, int revents) 1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1067{ 1543{
1068 if (fd >= 0 && fd < anfdmax) 1544 if (fd >= 0 && fd < anfdmax)
1069 fd_event_nocheck (EV_A_ fd, revents); 1545 fd_event_nocheck (EV_A_ fd, revents);
1070} 1546}
1071 1547
1417 ev_io_start (EV_A_ &pipe_w); 1893 ev_io_start (EV_A_ &pipe_w);
1418 ev_unref (EV_A); /* watcher should not keep loop alive */ 1894 ev_unref (EV_A); /* watcher should not keep loop alive */
1419 } 1895 }
1420} 1896}
1421 1897
1422inline_size void 1898inline_speed void
1423evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1899evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1424{ 1900{
1425 if (!*flag) 1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1426 { 1902
1903 if (expect_true (*flag))
1904 return;
1905
1427 *flag = 1; 1906 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1428 1908
1909 pipe_write_skipped = 1;
1910
1911 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1912
1913 if (pipe_write_wanted)
1914 {
1915 int old_errno;
1916
1429 pipe_write_skipped = 1; 1917 pipe_write_skipped = 0;
1918 ECB_MEMORY_FENCE_RELEASE;
1430 1919
1431 if (pipe_write_wanted) 1920 old_errno = errno; /* save errno because write will clobber it */
1921
1922#if EV_USE_EVENTFD
1923 if (evfd >= 0)
1432 { 1924 {
1433 int old_errno = errno; /* save errno because write will clobber it */
1434 char dummy;
1435
1436 pipe_write_skipped = 0;
1437
1438#if EV_USE_EVENTFD
1439 if (evfd >= 0)
1440 {
1441 uint64_t counter = 1; 1925 uint64_t counter = 1;
1442 write (evfd, &counter, sizeof (uint64_t)); 1926 write (evfd, &counter, sizeof (uint64_t));
1443 }
1444 else
1445#endif
1446 {
1447 /* win32 people keep sending patches that change this write() to send() */
1448 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449 /* so when you think this write should be a send instead, please find out */
1450 /* where your send() is from - it's definitely not the microsoft send, and */
1451 /* tell me. thank you. */
1452 write (evpipe [1], &dummy, 1);
1453 }
1454
1455 errno = old_errno;
1456 } 1927 }
1928 else
1929#endif
1930 {
1931#ifdef _WIN32
1932 WSABUF buf;
1933 DWORD sent;
1934 buf.buf = &buf;
1935 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else
1938 write (evpipe [1], &(evpipe [1]), 1);
1939#endif
1940 }
1941
1942 errno = old_errno;
1457 } 1943 }
1458} 1944}
1459 1945
1460/* called whenever the libev signal pipe */ 1946/* called whenever the libev signal pipe */
1461/* got some events (signal, async) */ 1947/* got some events (signal, async) */
1473 read (evfd, &counter, sizeof (uint64_t)); 1959 read (evfd, &counter, sizeof (uint64_t));
1474 } 1960 }
1475 else 1961 else
1476#endif 1962#endif
1477 { 1963 {
1478 char dummy; 1964 char dummy[4];
1479 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1965#ifdef _WIN32
1966 WSABUF buf;
1967 DWORD recvd;
1968 DWORD flags = 0;
1969 buf.buf = dummy;
1970 buf.len = sizeof (dummy);
1971 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1972#else
1480 read (evpipe [0], &dummy, 1); 1973 read (evpipe [0], &dummy, sizeof (dummy));
1974#endif
1481 } 1975 }
1482 } 1976 }
1483 1977
1484 pipe_write_skipped = 0; 1978 pipe_write_skipped = 0;
1979
1980 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1485 1981
1486#if EV_SIGNAL_ENABLE 1982#if EV_SIGNAL_ENABLE
1487 if (sig_pending) 1983 if (sig_pending)
1488 { 1984 {
1489 sig_pending = 0; 1985 sig_pending = 0;
1986
1987 ECB_MEMORY_FENCE;
1490 1988
1491 for (i = EV_NSIG - 1; i--; ) 1989 for (i = EV_NSIG - 1; i--; )
1492 if (expect_false (signals [i].pending)) 1990 if (expect_false (signals [i].pending))
1493 ev_feed_signal_event (EV_A_ i + 1); 1991 ev_feed_signal_event (EV_A_ i + 1);
1494 } 1992 }
1496 1994
1497#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1498 if (async_pending) 1996 if (async_pending)
1499 { 1997 {
1500 async_pending = 0; 1998 async_pending = 0;
1999
2000 ECB_MEMORY_FENCE;
1501 2001
1502 for (i = asynccnt; i--; ) 2002 for (i = asynccnt; i--; )
1503 if (asyncs [i]->sent) 2003 if (asyncs [i]->sent)
1504 { 2004 {
1505 asyncs [i]->sent = 0; 2005 asyncs [i]->sent = 0;
2006 ECB_MEMORY_FENCE_RELEASE;
1506 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2007 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1507 } 2008 }
1508 } 2009 }
1509#endif 2010#endif
1510} 2011}
1511 2012
1512/*****************************************************************************/ 2013/*****************************************************************************/
1513 2014
1514void 2015void
1515ev_feed_signal (int signum) 2016ev_feed_signal (int signum) EV_THROW
1516{ 2017{
1517#if EV_MULTIPLICITY 2018#if EV_MULTIPLICITY
1518 EV_P = signals [signum - 1].loop; 2019 EV_P = signals [signum - 1].loop;
1519 2020
1520 if (!EV_A) 2021 if (!EV_A)
1521 return; 2022 return;
1522#endif 2023#endif
1523 2024
1524 evpipe_init (EV_A); 2025 if (!ev_active (&pipe_w))
2026 return;
1525 2027
1526 signals [signum - 1].pending = 1; 2028 signals [signum - 1].pending = 1;
1527 evpipe_write (EV_A_ &sig_pending); 2029 evpipe_write (EV_A_ &sig_pending);
1528} 2030}
1529 2031
1536 2038
1537 ev_feed_signal (signum); 2039 ev_feed_signal (signum);
1538} 2040}
1539 2041
1540void noinline 2042void noinline
1541ev_feed_signal_event (EV_P_ int signum) 2043ev_feed_signal_event (EV_P_ int signum) EV_THROW
1542{ 2044{
1543 WL w; 2045 WL w;
1544 2046
1545 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2047 if (expect_false (signum <= 0 || signum > EV_NSIG))
1546 return; 2048 return;
1554 if (expect_false (signals [signum].loop != EV_A)) 2056 if (expect_false (signals [signum].loop != EV_A))
1555 return; 2057 return;
1556#endif 2058#endif
1557 2059
1558 signals [signum].pending = 0; 2060 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE;
1559 2062
1560 for (w = signals [signum].head; w; w = w->next) 2063 for (w = signals [signum].head; w; w = w->next)
1561 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1562} 2065}
1563 2066
1662#if EV_USE_SELECT 2165#if EV_USE_SELECT
1663# include "ev_select.c" 2166# include "ev_select.c"
1664#endif 2167#endif
1665 2168
1666int ecb_cold 2169int ecb_cold
1667ev_version_major (void) 2170ev_version_major (void) EV_THROW
1668{ 2171{
1669 return EV_VERSION_MAJOR; 2172 return EV_VERSION_MAJOR;
1670} 2173}
1671 2174
1672int ecb_cold 2175int ecb_cold
1673ev_version_minor (void) 2176ev_version_minor (void) EV_THROW
1674{ 2177{
1675 return EV_VERSION_MINOR; 2178 return EV_VERSION_MINOR;
1676} 2179}
1677 2180
1678/* return true if we are running with elevated privileges and should ignore env variables */ 2181/* return true if we are running with elevated privileges and should ignore env variables */
1686 || getgid () != getegid (); 2189 || getgid () != getegid ();
1687#endif 2190#endif
1688} 2191}
1689 2192
1690unsigned int ecb_cold 2193unsigned int ecb_cold
1691ev_supported_backends (void) 2194ev_supported_backends (void) EV_THROW
1692{ 2195{
1693 unsigned int flags = 0; 2196 unsigned int flags = 0;
1694 2197
1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1696 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1700 2203
1701 return flags; 2204 return flags;
1702} 2205}
1703 2206
1704unsigned int ecb_cold 2207unsigned int ecb_cold
1705ev_recommended_backends (void) 2208ev_recommended_backends (void) EV_THROW
1706{ 2209{
1707 unsigned int flags = ev_supported_backends (); 2210 unsigned int flags = ev_supported_backends ();
1708 2211
1709#ifndef __NetBSD__ 2212#ifndef __NetBSD__
1710 /* kqueue is borked on everything but netbsd apparently */ 2213 /* kqueue is borked on everything but netbsd apparently */
1722 2225
1723 return flags; 2226 return flags;
1724} 2227}
1725 2228
1726unsigned int ecb_cold 2229unsigned int ecb_cold
1727ev_embeddable_backends (void) 2230ev_embeddable_backends (void) EV_THROW
1728{ 2231{
1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1730 2233
1731 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1732 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1734 2237
1735 return flags; 2238 return flags;
1736} 2239}
1737 2240
1738unsigned int 2241unsigned int
1739ev_backend (EV_P) 2242ev_backend (EV_P) EV_THROW
1740{ 2243{
1741 return backend; 2244 return backend;
1742} 2245}
1743 2246
1744#if EV_FEATURE_API 2247#if EV_FEATURE_API
1745unsigned int 2248unsigned int
1746ev_iteration (EV_P) 2249ev_iteration (EV_P) EV_THROW
1747{ 2250{
1748 return loop_count; 2251 return loop_count;
1749} 2252}
1750 2253
1751unsigned int 2254unsigned int
1752ev_depth (EV_P) 2255ev_depth (EV_P) EV_THROW
1753{ 2256{
1754 return loop_depth; 2257 return loop_depth;
1755} 2258}
1756 2259
1757void 2260void
1758ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1759{ 2262{
1760 io_blocktime = interval; 2263 io_blocktime = interval;
1761} 2264}
1762 2265
1763void 2266void
1764ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1765{ 2268{
1766 timeout_blocktime = interval; 2269 timeout_blocktime = interval;
1767} 2270}
1768 2271
1769void 2272void
1770ev_set_userdata (EV_P_ void *data) 2273ev_set_userdata (EV_P_ void *data) EV_THROW
1771{ 2274{
1772 userdata = data; 2275 userdata = data;
1773} 2276}
1774 2277
1775void * 2278void *
1776ev_userdata (EV_P) 2279ev_userdata (EV_P) EV_THROW
1777{ 2280{
1778 return userdata; 2281 return userdata;
1779} 2282}
1780 2283
1781void 2284void
1782ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1783{ 2286{
1784 invoke_cb = invoke_pending_cb; 2287 invoke_cb = invoke_pending_cb;
1785} 2288}
1786 2289
1787void 2290void
1788ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1789{ 2292{
1790 release_cb = release; 2293 release_cb = release;
1791 acquire_cb = acquire; 2294 acquire_cb = acquire;
1792} 2295}
1793#endif 2296#endif
1794 2297
1795/* initialise a loop structure, must be zero-initialised */ 2298/* initialise a loop structure, must be zero-initialised */
1796static void noinline ecb_cold 2299static void noinline ecb_cold
1797loop_init (EV_P_ unsigned int flags) 2300loop_init (EV_P_ unsigned int flags) EV_THROW
1798{ 2301{
1799 if (!backend) 2302 if (!backend)
1800 { 2303 {
1801 origflags = flags; 2304 origflags = flags;
1802 2305
1907 EV_INVOKE_PENDING; 2410 EV_INVOKE_PENDING;
1908 } 2411 }
1909#endif 2412#endif
1910 2413
1911#if EV_CHILD_ENABLE 2414#if EV_CHILD_ENABLE
1912 if (ev_is_active (&childev)) 2415 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1913 { 2416 {
1914 ev_ref (EV_A); /* child watcher */ 2417 ev_ref (EV_A); /* child watcher */
1915 ev_signal_stop (EV_A_ &childev); 2418 ev_signal_stop (EV_A_ &childev);
1916 } 2419 }
1917#endif 2420#endif
2055} 2558}
2056 2559
2057#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
2058 2561
2059struct ev_loop * ecb_cold 2562struct ev_loop * ecb_cold
2060ev_loop_new (unsigned int flags) 2563ev_loop_new (unsigned int flags) EV_THROW
2061{ 2564{
2062 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2063 2566
2064 memset (EV_A, 0, sizeof (struct ev_loop)); 2567 memset (EV_A, 0, sizeof (struct ev_loop));
2065 loop_init (EV_A_ flags); 2568 loop_init (EV_A_ flags);
2109} 2612}
2110#endif 2613#endif
2111 2614
2112#if EV_FEATURE_API 2615#if EV_FEATURE_API
2113void ecb_cold 2616void ecb_cold
2114ev_verify (EV_P) 2617ev_verify (EV_P) EV_THROW
2115{ 2618{
2116#if EV_VERIFY 2619#if EV_VERIFY
2117 int i; 2620 int i;
2118 WL w; 2621 WL w, w2;
2119 2622
2120 assert (activecnt >= -1); 2623 assert (activecnt >= -1);
2121 2624
2122 assert (fdchangemax >= fdchangecnt); 2625 assert (fdchangemax >= fdchangecnt);
2123 for (i = 0; i < fdchangecnt; ++i) 2626 for (i = 0; i < fdchangecnt; ++i)
2124 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2627 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2125 2628
2126 assert (anfdmax >= 0); 2629 assert (anfdmax >= 0);
2127 for (i = 0; i < anfdmax; ++i) 2630 for (i = 0; i < anfdmax; ++i)
2631 {
2632 int j = 0;
2633
2128 for (w = anfds [i].head; w; w = w->next) 2634 for (w = w2 = anfds [i].head; w; w = w->next)
2129 { 2635 {
2130 verify_watcher (EV_A_ (W)w); 2636 verify_watcher (EV_A_ (W)w);
2637
2638 if (j++ & 1)
2639 {
2640 assert (("libev: io watcher list contains a loop", w != w2));
2641 w2 = w2->next;
2642 }
2643
2131 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2644 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2132 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2645 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2133 } 2646 }
2647 }
2134 2648
2135 assert (timermax >= timercnt); 2649 assert (timermax >= timercnt);
2136 verify_heap (EV_A_ timers, timercnt); 2650 verify_heap (EV_A_ timers, timercnt);
2137 2651
2138#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
2188#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
2189struct ev_loop * ecb_cold 2703struct ev_loop * ecb_cold
2190#else 2704#else
2191int 2705int
2192#endif 2706#endif
2193ev_default_loop (unsigned int flags) 2707ev_default_loop (unsigned int flags) EV_THROW
2194{ 2708{
2195 if (!ev_default_loop_ptr) 2709 if (!ev_default_loop_ptr)
2196 { 2710 {
2197#if EV_MULTIPLICITY 2711#if EV_MULTIPLICITY
2198 EV_P = ev_default_loop_ptr = &default_loop_struct; 2712 EV_P = ev_default_loop_ptr = &default_loop_struct;
2217 2731
2218 return ev_default_loop_ptr; 2732 return ev_default_loop_ptr;
2219} 2733}
2220 2734
2221void 2735void
2222ev_loop_fork (EV_P) 2736ev_loop_fork (EV_P) EV_THROW
2223{ 2737{
2224 postfork = 1; /* must be in line with ev_default_fork */ 2738 postfork = 1;
2225} 2739}
2226 2740
2227/*****************************************************************************/ 2741/*****************************************************************************/
2228 2742
2229void 2743void
2231{ 2745{
2232 EV_CB_INVOKE ((W)w, revents); 2746 EV_CB_INVOKE ((W)w, revents);
2233} 2747}
2234 2748
2235unsigned int 2749unsigned int
2236ev_pending_count (EV_P) 2750ev_pending_count (EV_P) EV_THROW
2237{ 2751{
2238 int pri; 2752 int pri;
2239 unsigned int count = 0; 2753 unsigned int count = 0;
2240 2754
2241 for (pri = NUMPRI; pri--; ) 2755 for (pri = NUMPRI; pri--; )
2245} 2759}
2246 2760
2247void noinline 2761void noinline
2248ev_invoke_pending (EV_P) 2762ev_invoke_pending (EV_P)
2249{ 2763{
2250 int pri; 2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2251
2252 for (pri = NUMPRI; pri--; )
2253 while (pendingcnt [pri]) 2765 while (pendingcnt [pendingpri])
2254 { 2766 {
2255 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2256 2768
2257 p->w->pending = 0; 2769 p->w->pending = 0;
2258 EV_CB_INVOKE (p->w, p->events); 2770 EV_CB_INVOKE (p->w, p->events);
2259 EV_FREQUENT_CHECK; 2771 EV_FREQUENT_CHECK;
2260 } 2772 }
2355{ 2867{
2356 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2357 2869
2358 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2870 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2359 { 2871 {
2360 int feed_count = 0;
2361
2362 do 2872 do
2363 { 2873 {
2364 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2365 2875
2366 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2500 3010
2501 mn_now = ev_rt_now; 3011 mn_now = ev_rt_now;
2502 } 3012 }
2503} 3013}
2504 3014
2505void 3015int
2506ev_run (EV_P_ int flags) 3016ev_run (EV_P_ int flags)
2507{ 3017{
2508#if EV_FEATURE_API 3018#if EV_FEATURE_API
2509 ++loop_depth; 3019 ++loop_depth;
2510#endif 3020#endif
2571 time_update (EV_A_ 1e100); 3081 time_update (EV_A_ 1e100);
2572 3082
2573 /* from now on, we want a pipe-wake-up */ 3083 /* from now on, we want a pipe-wake-up */
2574 pipe_write_wanted = 1; 3084 pipe_write_wanted = 1;
2575 3085
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087
2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2577 { 3089 {
2578 waittime = MAX_BLOCKTIME; 3090 waittime = MAX_BLOCKTIME;
2579 3091
2580 if (timercnt) 3092 if (timercnt)
2621#endif 3133#endif
2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3134 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2623 backend_poll (EV_A_ waittime); 3135 backend_poll (EV_A_ waittime);
2624 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625 3137
2626 pipe_write_wanted = 0; 3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2627 3139
3140 MEMORY_FENCE_ACQUIRE;
2628 if (pipe_write_skipped) 3141 if (pipe_write_skipped)
2629 { 3142 {
2630 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3143 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2631 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3144 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632 } 3145 }
2665 loop_done = EVBREAK_CANCEL; 3178 loop_done = EVBREAK_CANCEL;
2666 3179
2667#if EV_FEATURE_API 3180#if EV_FEATURE_API
2668 --loop_depth; 3181 --loop_depth;
2669#endif 3182#endif
3183
3184 return activecnt;
2670} 3185}
2671 3186
2672void 3187void
2673ev_break (EV_P_ int how) 3188ev_break (EV_P_ int how) EV_THROW
2674{ 3189{
2675 loop_done = how; 3190 loop_done = how;
2676} 3191}
2677 3192
2678void 3193void
2679ev_ref (EV_P) 3194ev_ref (EV_P) EV_THROW
2680{ 3195{
2681 ++activecnt; 3196 ++activecnt;
2682} 3197}
2683 3198
2684void 3199void
2685ev_unref (EV_P) 3200ev_unref (EV_P) EV_THROW
2686{ 3201{
2687 --activecnt; 3202 --activecnt;
2688} 3203}
2689 3204
2690void 3205void
2691ev_now_update (EV_P) 3206ev_now_update (EV_P) EV_THROW
2692{ 3207{
2693 time_update (EV_A_ 1e100); 3208 time_update (EV_A_ 1e100);
2694} 3209}
2695 3210
2696void 3211void
2697ev_suspend (EV_P) 3212ev_suspend (EV_P) EV_THROW
2698{ 3213{
2699 ev_now_update (EV_A); 3214 ev_now_update (EV_A);
2700} 3215}
2701 3216
2702void 3217void
2703ev_resume (EV_P) 3218ev_resume (EV_P) EV_THROW
2704{ 3219{
2705 ev_tstamp mn_prev = mn_now; 3220 ev_tstamp mn_prev = mn_now;
2706 3221
2707 ev_now_update (EV_A); 3222 ev_now_update (EV_A);
2708 timers_reschedule (EV_A_ mn_now - mn_prev); 3223 timers_reschedule (EV_A_ mn_now - mn_prev);
2747 w->pending = 0; 3262 w->pending = 0;
2748 } 3263 }
2749} 3264}
2750 3265
2751int 3266int
2752ev_clear_pending (EV_P_ void *w) 3267ev_clear_pending (EV_P_ void *w) EV_THROW
2753{ 3268{
2754 W w_ = (W)w; 3269 W w_ = (W)w;
2755 int pending = w_->pending; 3270 int pending = w_->pending;
2756 3271
2757 if (expect_true (pending)) 3272 if (expect_true (pending))
2790} 3305}
2791 3306
2792/*****************************************************************************/ 3307/*****************************************************************************/
2793 3308
2794void noinline 3309void noinline
2795ev_io_start (EV_P_ ev_io *w) 3310ev_io_start (EV_P_ ev_io *w) EV_THROW
2796{ 3311{
2797 int fd = w->fd; 3312 int fd = w->fd;
2798 3313
2799 if (expect_false (ev_is_active (w))) 3314 if (expect_false (ev_is_active (w)))
2800 return; 3315 return;
2806 3321
2807 ev_start (EV_A_ (W)w, 1); 3322 ev_start (EV_A_ (W)w, 1);
2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3323 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2809 wlist_add (&anfds[fd].head, (WL)w); 3324 wlist_add (&anfds[fd].head, (WL)w);
2810 3325
3326 /* common bug, apparently */
3327 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3328
2811 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3329 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2812 w->events &= ~EV__IOFDSET; 3330 w->events &= ~EV__IOFDSET;
2813 3331
2814 EV_FREQUENT_CHECK; 3332 EV_FREQUENT_CHECK;
2815} 3333}
2816 3334
2817void noinline 3335void noinline
2818ev_io_stop (EV_P_ ev_io *w) 3336ev_io_stop (EV_P_ ev_io *w) EV_THROW
2819{ 3337{
2820 clear_pending (EV_A_ (W)w); 3338 clear_pending (EV_A_ (W)w);
2821 if (expect_false (!ev_is_active (w))) 3339 if (expect_false (!ev_is_active (w)))
2822 return; 3340 return;
2823 3341
2832 3350
2833 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2834} 3352}
2835 3353
2836void noinline 3354void noinline
2837ev_timer_start (EV_P_ ev_timer *w) 3355ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2838{ 3356{
2839 if (expect_false (ev_is_active (w))) 3357 if (expect_false (ev_is_active (w)))
2840 return; 3358 return;
2841 3359
2842 ev_at (w) += mn_now; 3360 ev_at (w) += mn_now;
2856 3374
2857 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3375 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2858} 3376}
2859 3377
2860void noinline 3378void noinline
2861ev_timer_stop (EV_P_ ev_timer *w) 3379ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2862{ 3380{
2863 clear_pending (EV_A_ (W)w); 3381 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 3382 if (expect_false (!ev_is_active (w)))
2865 return; 3383 return;
2866 3384
2886 3404
2887 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2888} 3406}
2889 3407
2890void noinline 3408void noinline
2891ev_timer_again (EV_P_ ev_timer *w) 3409ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2892{ 3410{
2893 EV_FREQUENT_CHECK; 3411 EV_FREQUENT_CHECK;
3412
3413 clear_pending (EV_A_ (W)w);
2894 3414
2895 if (ev_is_active (w)) 3415 if (ev_is_active (w))
2896 { 3416 {
2897 if (w->repeat) 3417 if (w->repeat)
2898 { 3418 {
2911 3431
2912 EV_FREQUENT_CHECK; 3432 EV_FREQUENT_CHECK;
2913} 3433}
2914 3434
2915ev_tstamp 3435ev_tstamp
2916ev_timer_remaining (EV_P_ ev_timer *w) 3436ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2917{ 3437{
2918 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3438 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2919} 3439}
2920 3440
2921#if EV_PERIODIC_ENABLE 3441#if EV_PERIODIC_ENABLE
2922void noinline 3442void noinline
2923ev_periodic_start (EV_P_ ev_periodic *w) 3443ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2924{ 3444{
2925 if (expect_false (ev_is_active (w))) 3445 if (expect_false (ev_is_active (w)))
2926 return; 3446 return;
2927 3447
2928 if (w->reschedule_cb) 3448 if (w->reschedule_cb)
2948 3468
2949 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3469 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2950} 3470}
2951 3471
2952void noinline 3472void noinline
2953ev_periodic_stop (EV_P_ ev_periodic *w) 3473ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2954{ 3474{
2955 clear_pending (EV_A_ (W)w); 3475 clear_pending (EV_A_ (W)w);
2956 if (expect_false (!ev_is_active (w))) 3476 if (expect_false (!ev_is_active (w)))
2957 return; 3477 return;
2958 3478
2976 3496
2977 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2978} 3498}
2979 3499
2980void noinline 3500void noinline
2981ev_periodic_again (EV_P_ ev_periodic *w) 3501ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2982{ 3502{
2983 /* TODO: use adjustheap and recalculation */ 3503 /* TODO: use adjustheap and recalculation */
2984 ev_periodic_stop (EV_A_ w); 3504 ev_periodic_stop (EV_A_ w);
2985 ev_periodic_start (EV_A_ w); 3505 ev_periodic_start (EV_A_ w);
2986} 3506}
2991#endif 3511#endif
2992 3512
2993#if EV_SIGNAL_ENABLE 3513#if EV_SIGNAL_ENABLE
2994 3514
2995void noinline 3515void noinline
2996ev_signal_start (EV_P_ ev_signal *w) 3516ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2997{ 3517{
2998 if (expect_false (ev_is_active (w))) 3518 if (expect_false (ev_is_active (w)))
2999 return; 3519 return;
3000 3520
3001 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3521 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3072 3592
3073 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
3074} 3594}
3075 3595
3076void noinline 3596void noinline
3077ev_signal_stop (EV_P_ ev_signal *w) 3597ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3078{ 3598{
3079 clear_pending (EV_A_ (W)w); 3599 clear_pending (EV_A_ (W)w);
3080 if (expect_false (!ev_is_active (w))) 3600 if (expect_false (!ev_is_active (w)))
3081 return; 3601 return;
3082 3602
3113#endif 3633#endif
3114 3634
3115#if EV_CHILD_ENABLE 3635#if EV_CHILD_ENABLE
3116 3636
3117void 3637void
3118ev_child_start (EV_P_ ev_child *w) 3638ev_child_start (EV_P_ ev_child *w) EV_THROW
3119{ 3639{
3120#if EV_MULTIPLICITY 3640#if EV_MULTIPLICITY
3121 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3122#endif 3642#endif
3123 if (expect_false (ev_is_active (w))) 3643 if (expect_false (ev_is_active (w)))
3130 3650
3131 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
3132} 3652}
3133 3653
3134void 3654void
3135ev_child_stop (EV_P_ ev_child *w) 3655ev_child_stop (EV_P_ ev_child *w) EV_THROW
3136{ 3656{
3137 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
3138 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
3139 return; 3659 return;
3140 3660
3307} 3827}
3308 3828
3309inline_size int 3829inline_size int
3310infy_newfd (void) 3830infy_newfd (void)
3311{ 3831{
3312#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3832#if defined IN_CLOEXEC && defined IN_NONBLOCK
3313 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3833 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314 if (fd >= 0) 3834 if (fd >= 0)
3315 return fd; 3835 return fd;
3316#endif 3836#endif
3317 return inotify_init (); 3837 return inotify_init ();
3392#else 3912#else
3393# define EV_LSTAT(p,b) lstat (p, b) 3913# define EV_LSTAT(p,b) lstat (p, b)
3394#endif 3914#endif
3395 3915
3396void 3916void
3397ev_stat_stat (EV_P_ ev_stat *w) 3917ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3398{ 3918{
3399 if (lstat (w->path, &w->attr) < 0) 3919 if (lstat (w->path, &w->attr) < 0)
3400 w->attr.st_nlink = 0; 3920 w->attr.st_nlink = 0;
3401 else if (!w->attr.st_nlink) 3921 else if (!w->attr.st_nlink)
3402 w->attr.st_nlink = 1; 3922 w->attr.st_nlink = 1;
3441 ev_feed_event (EV_A_ w, EV_STAT); 3961 ev_feed_event (EV_A_ w, EV_STAT);
3442 } 3962 }
3443} 3963}
3444 3964
3445void 3965void
3446ev_stat_start (EV_P_ ev_stat *w) 3966ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3447{ 3967{
3448 if (expect_false (ev_is_active (w))) 3968 if (expect_false (ev_is_active (w)))
3449 return; 3969 return;
3450 3970
3451 ev_stat_stat (EV_A_ w); 3971 ev_stat_stat (EV_A_ w);
3472 3992
3473 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
3474} 3994}
3475 3995
3476void 3996void
3477ev_stat_stop (EV_P_ ev_stat *w) 3997ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3478{ 3998{
3479 clear_pending (EV_A_ (W)w); 3999 clear_pending (EV_A_ (W)w);
3480 if (expect_false (!ev_is_active (w))) 4000 if (expect_false (!ev_is_active (w)))
3481 return; 4001 return;
3482 4002
3498} 4018}
3499#endif 4019#endif
3500 4020
3501#if EV_IDLE_ENABLE 4021#if EV_IDLE_ENABLE
3502void 4022void
3503ev_idle_start (EV_P_ ev_idle *w) 4023ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3504{ 4024{
3505 if (expect_false (ev_is_active (w))) 4025 if (expect_false (ev_is_active (w)))
3506 return; 4026 return;
3507 4027
3508 pri_adjust (EV_A_ (W)w); 4028 pri_adjust (EV_A_ (W)w);
3521 4041
3522 EV_FREQUENT_CHECK; 4042 EV_FREQUENT_CHECK;
3523} 4043}
3524 4044
3525void 4045void
3526ev_idle_stop (EV_P_ ev_idle *w) 4046ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3527{ 4047{
3528 clear_pending (EV_A_ (W)w); 4048 clear_pending (EV_A_ (W)w);
3529 if (expect_false (!ev_is_active (w))) 4049 if (expect_false (!ev_is_active (w)))
3530 return; 4050 return;
3531 4051
3545} 4065}
3546#endif 4066#endif
3547 4067
3548#if EV_PREPARE_ENABLE 4068#if EV_PREPARE_ENABLE
3549void 4069void
3550ev_prepare_start (EV_P_ ev_prepare *w) 4070ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3551{ 4071{
3552 if (expect_false (ev_is_active (w))) 4072 if (expect_false (ev_is_active (w)))
3553 return; 4073 return;
3554 4074
3555 EV_FREQUENT_CHECK; 4075 EV_FREQUENT_CHECK;
3560 4080
3561 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
3562} 4082}
3563 4083
3564void 4084void
3565ev_prepare_stop (EV_P_ ev_prepare *w) 4085ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3566{ 4086{
3567 clear_pending (EV_A_ (W)w); 4087 clear_pending (EV_A_ (W)w);
3568 if (expect_false (!ev_is_active (w))) 4088 if (expect_false (!ev_is_active (w)))
3569 return; 4089 return;
3570 4090
3583} 4103}
3584#endif 4104#endif
3585 4105
3586#if EV_CHECK_ENABLE 4106#if EV_CHECK_ENABLE
3587void 4107void
3588ev_check_start (EV_P_ ev_check *w) 4108ev_check_start (EV_P_ ev_check *w) EV_THROW
3589{ 4109{
3590 if (expect_false (ev_is_active (w))) 4110 if (expect_false (ev_is_active (w)))
3591 return; 4111 return;
3592 4112
3593 EV_FREQUENT_CHECK; 4113 EV_FREQUENT_CHECK;
3598 4118
3599 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
3600} 4120}
3601 4121
3602void 4122void
3603ev_check_stop (EV_P_ ev_check *w) 4123ev_check_stop (EV_P_ ev_check *w) EV_THROW
3604{ 4124{
3605 clear_pending (EV_A_ (W)w); 4125 clear_pending (EV_A_ (W)w);
3606 if (expect_false (!ev_is_active (w))) 4126 if (expect_false (!ev_is_active (w)))
3607 return; 4127 return;
3608 4128
3621} 4141}
3622#endif 4142#endif
3623 4143
3624#if EV_EMBED_ENABLE 4144#if EV_EMBED_ENABLE
3625void noinline 4145void noinline
3626ev_embed_sweep (EV_P_ ev_embed *w) 4146ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3627{ 4147{
3628 ev_run (w->other, EVRUN_NOWAIT); 4148 ev_run (w->other, EVRUN_NOWAIT);
3629} 4149}
3630 4150
3631static void 4151static void
3679 ev_idle_stop (EV_A_ idle); 4199 ev_idle_stop (EV_A_ idle);
3680} 4200}
3681#endif 4201#endif
3682 4202
3683void 4203void
3684ev_embed_start (EV_P_ ev_embed *w) 4204ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3685{ 4205{
3686 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
3687 return; 4207 return;
3688 4208
3689 { 4209 {
3710 4230
3711 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
3712} 4232}
3713 4233
3714void 4234void
3715ev_embed_stop (EV_P_ ev_embed *w) 4235ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3716{ 4236{
3717 clear_pending (EV_A_ (W)w); 4237 clear_pending (EV_A_ (W)w);
3718 if (expect_false (!ev_is_active (w))) 4238 if (expect_false (!ev_is_active (w)))
3719 return; 4239 return;
3720 4240
3730} 4250}
3731#endif 4251#endif
3732 4252
3733#if EV_FORK_ENABLE 4253#if EV_FORK_ENABLE
3734void 4254void
3735ev_fork_start (EV_P_ ev_fork *w) 4255ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3736{ 4256{
3737 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
3738 return; 4258 return;
3739 4259
3740 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
3745 4265
3746 EV_FREQUENT_CHECK; 4266 EV_FREQUENT_CHECK;
3747} 4267}
3748 4268
3749void 4269void
3750ev_fork_stop (EV_P_ ev_fork *w) 4270ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3751{ 4271{
3752 clear_pending (EV_A_ (W)w); 4272 clear_pending (EV_A_ (W)w);
3753 if (expect_false (!ev_is_active (w))) 4273 if (expect_false (!ev_is_active (w)))
3754 return; 4274 return;
3755 4275
3768} 4288}
3769#endif 4289#endif
3770 4290
3771#if EV_CLEANUP_ENABLE 4291#if EV_CLEANUP_ENABLE
3772void 4292void
3773ev_cleanup_start (EV_P_ ev_cleanup *w) 4293ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3774{ 4294{
3775 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
3776 return; 4296 return;
3777 4297
3778 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
3785 ev_unref (EV_A); 4305 ev_unref (EV_A);
3786 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3787} 4307}
3788 4308
3789void 4309void
3790ev_cleanup_stop (EV_P_ ev_cleanup *w) 4310ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3791{ 4311{
3792 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3793 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3794 return; 4314 return;
3795 4315
3809} 4329}
3810#endif 4330#endif
3811 4331
3812#if EV_ASYNC_ENABLE 4332#if EV_ASYNC_ENABLE
3813void 4333void
3814ev_async_start (EV_P_ ev_async *w) 4334ev_async_start (EV_P_ ev_async *w) EV_THROW
3815{ 4335{
3816 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
3817 return; 4337 return;
3818 4338
3819 w->sent = 0; 4339 w->sent = 0;
3828 4348
3829 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3830} 4350}
3831 4351
3832void 4352void
3833ev_async_stop (EV_P_ ev_async *w) 4353ev_async_stop (EV_P_ ev_async *w) EV_THROW
3834{ 4354{
3835 clear_pending (EV_A_ (W)w); 4355 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4356 if (expect_false (!ev_is_active (w)))
3837 return; 4357 return;
3838 4358
3849 4369
3850 EV_FREQUENT_CHECK; 4370 EV_FREQUENT_CHECK;
3851} 4371}
3852 4372
3853void 4373void
3854ev_async_send (EV_P_ ev_async *w) 4374ev_async_send (EV_P_ ev_async *w) EV_THROW
3855{ 4375{
3856 w->sent = 1; 4376 w->sent = 1;
3857 evpipe_write (EV_A_ &async_pending); 4377 evpipe_write (EV_A_ &async_pending);
3858} 4378}
3859#endif 4379#endif
3896 4416
3897 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4417 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3898} 4418}
3899 4419
3900void 4420void
3901ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4421ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3902{ 4422{
3903 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4423 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3904 4424
3905 if (expect_false (!once)) 4425 if (expect_false (!once))
3906 { 4426 {
3928 4448
3929/*****************************************************************************/ 4449/*****************************************************************************/
3930 4450
3931#if EV_WALK_ENABLE 4451#if EV_WALK_ENABLE
3932void ecb_cold 4452void ecb_cold
3933ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4453ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3934{ 4454{
3935 int i, j; 4455 int i, j;
3936 ev_watcher_list *wl, *wn; 4456 ev_watcher_list *wl, *wn;
3937 4457
3938 if (types & (EV_IO | EV_EMBED)) 4458 if (types & (EV_IO | EV_EMBED))
3981 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4501 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3982#endif 4502#endif
3983 4503
3984#if EV_IDLE_ENABLE 4504#if EV_IDLE_ENABLE
3985 if (types & EV_IDLE) 4505 if (types & EV_IDLE)
3986 for (j = NUMPRI; i--; ) 4506 for (j = NUMPRI; j--; )
3987 for (i = idlecnt [j]; i--; ) 4507 for (i = idlecnt [j]; i--; )
3988 cb (EV_A_ EV_IDLE, idles [j][i]); 4508 cb (EV_A_ EV_IDLE, idles [j][i]);
3989#endif 4509#endif
3990 4510
3991#if EV_FORK_ENABLE 4511#if EV_FORK_ENABLE
4044 4564
4045#if EV_MULTIPLICITY 4565#if EV_MULTIPLICITY
4046 #include "ev_wrap.h" 4566 #include "ev_wrap.h"
4047#endif 4567#endif
4048 4568
4049EV_CPP(})
4050

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