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Comparing libev/ev.c (file contents):
Revision 1.377 by root, Wed Jun 8 13:11:55 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
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
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;
469#if __GNUC__ >= 4 519 #if __GNUC__
470# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
471# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
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;
472#else 536#else
473# define expect(expr,value) (expr) 537 #include <inttypes.h>
474# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
475# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
476# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
477# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
478#endif 557 #endif
558#endif
479 559
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/*****************************************************************************/
682
683#if __cplusplus
684 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__
687#elif ECB_C99
688 #define ecb_inline static inline
689#else
690 #define ecb_inline static
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
709
710#if ECB_GCC_VERSION(3,1)
711 #define ecb_attribute(attrlist) __attribute__(attrlist)
712 #define ecb_is_constant(expr) __builtin_constant_p (expr)
713 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality)
720#endif
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
729#define ecb_noinline ecb_attribute ((__noinline__))
730#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__))
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
739
740#if ECB_GCC_VERSION(4,3)
741 #define ecb_artificial ecb_attribute ((__artificial__))
742 #define ecb_hot ecb_attribute ((__hot__))
743 #define ecb_cold ecb_attribute ((__cold__))
744#else
745 #define ecb_artificial
746 #define ecb_hot
747 #define ecb_cold
748#endif
749
750/* put around conditional expressions if you are very sure that the */
751/* expression is mostly true or mostly false. note that these return */
752/* booleans, not the expression. */
480#define expect_false(expr) expect ((expr) != 0, 0) 753#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481#define expect_true(expr) expect ((expr) != 0, 1) 754#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
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
1005
1006#define expect_false(cond) ecb_expect_false (cond)
1007#define expect_true(cond) ecb_expect_true (cond)
1008#define noinline ecb_noinline
1009
482#define inline_size static inline 1010#define inline_size ecb_inline
483 1011
484#if EV_FEATURE_CODE 1012#if EV_FEATURE_CODE
485# define inline_speed static inline 1013# define inline_speed ecb_inline
486#else 1014#else
487# define inline_speed static noinline 1015# define inline_speed static noinline
488#endif 1016#endif
489 1017
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
581 1109
582#ifdef __linux 1110#ifdef __linux
583# include <sys/utsname.h> 1111# include <sys/utsname.h>
584#endif 1112#endif
585 1113
586static unsigned int noinline 1114static unsigned int noinline ecb_cold
587ev_linux_version (void) 1115ev_linux_version (void)
588{ 1116{
589#ifdef __linux 1117#ifdef __linux
590 unsigned int v = 0; 1118 unsigned int v = 0;
591 struct utsname buf; 1119 struct utsname buf;
620} 1148}
621 1149
622/*****************************************************************************/ 1150/*****************************************************************************/
623 1151
624#if EV_AVOID_STDIO 1152#if EV_AVOID_STDIO
625static void noinline 1153static void noinline ecb_cold
626ev_printerr (const char *msg) 1154ev_printerr (const char *msg)
627{ 1155{
628 write (STDERR_FILENO, msg, strlen (msg)); 1156 write (STDERR_FILENO, msg, strlen (msg));
629} 1157}
630#endif 1158#endif
631 1159
632static void (*syserr_cb)(const char *msg); 1160static void (*syserr_cb)(const char *msg) EV_THROW;
633 1161
634void 1162void ecb_cold
635ev_set_syserr_cb (void (*cb)(const char *msg)) 1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636{ 1164{
637 syserr_cb = cb; 1165 syserr_cb = cb;
638} 1166}
639 1167
640static void noinline 1168static void noinline ecb_cold
641ev_syserr (const char *msg) 1169ev_syserr (const char *msg)
642{ 1170{
643 if (!msg) 1171 if (!msg)
644 msg = "(libev) system error"; 1172 msg = "(libev) system error";
645 1173
658 abort (); 1186 abort ();
659 } 1187 }
660} 1188}
661 1189
662static void * 1190static void *
663ev_realloc_emul (void *ptr, long size) 1191ev_realloc_emul (void *ptr, long size) EV_THROW
664{ 1192{
665#if __GLIBC__ 1193#if __GLIBC__
666 return realloc (ptr, size); 1194 return realloc (ptr, size);
667#else 1195#else
668 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
676 free (ptr); 1204 free (ptr);
677 return 0; 1205 return 0;
678#endif 1206#endif
679} 1207}
680 1208
681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682 1210
683void 1211void ecb_cold
684ev_set_allocator (void *(*cb)(void *ptr, long size)) 1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685{ 1213{
686 alloc = cb; 1214 alloc = cb;
687} 1215}
688 1216
689inline_speed void * 1217inline_speed void *
777 #undef VAR 1305 #undef VAR
778 }; 1306 };
779 #include "ev_wrap.h" 1307 #include "ev_wrap.h"
780 1308
781 static struct ev_loop default_loop_struct; 1309 static struct ev_loop default_loop_struct;
782 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 */
783 1311
784#else 1312#else
785 1313
786 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 */
787 #define VAR(name,decl) static decl; 1315 #define VAR(name,decl) static decl;
788 #include "ev_vars.h" 1316 #include "ev_vars.h"
789 #undef VAR 1317 #undef VAR
790 1318
791 static int ev_default_loop_ptr; 1319 static int ev_default_loop_ptr;
806 1334
807/*****************************************************************************/ 1335/*****************************************************************************/
808 1336
809#ifndef EV_HAVE_EV_TIME 1337#ifndef EV_HAVE_EV_TIME
810ev_tstamp 1338ev_tstamp
811ev_time (void) 1339ev_time (void) EV_THROW
812{ 1340{
813#if EV_USE_REALTIME 1341#if EV_USE_REALTIME
814 if (expect_true (have_realtime)) 1342 if (expect_true (have_realtime))
815 { 1343 {
816 struct timespec ts; 1344 struct timespec ts;
840 return ev_time (); 1368 return ev_time ();
841} 1369}
842 1370
843#if EV_MULTIPLICITY 1371#if EV_MULTIPLICITY
844ev_tstamp 1372ev_tstamp
845ev_now (EV_P) 1373ev_now (EV_P) EV_THROW
846{ 1374{
847 return ev_rt_now; 1375 return ev_rt_now;
848} 1376}
849#endif 1377#endif
850 1378
851void 1379void
852ev_sleep (ev_tstamp delay) 1380ev_sleep (ev_tstamp delay) EV_THROW
853{ 1381{
854 if (delay > 0.) 1382 if (delay > 0.)
855 { 1383 {
856#if EV_USE_NANOSLEEP 1384#if EV_USE_NANOSLEEP
857 struct timespec ts; 1385 struct timespec ts;
858 1386
859 EV_TS_SET (ts, delay); 1387 EV_TS_SET (ts, delay);
860 nanosleep (&ts, 0); 1388 nanosleep (&ts, 0);
861#elif defined(_WIN32) 1389#elif defined _WIN32
862 Sleep ((unsigned long)(delay * 1e3)); 1390 Sleep ((unsigned long)(delay * 1e3));
863#else 1391#else
864 struct timeval tv; 1392 struct timeval tv;
865 1393
866 /* 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 */
885 1413
886 do 1414 do
887 ncur <<= 1; 1415 ncur <<= 1;
888 while (cnt > ncur); 1416 while (cnt > ncur);
889 1417
890 /* 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 */
891 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1419 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
892 { 1420 {
893 ncur *= elem; 1421 ncur *= elem;
894 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);
895 ncur = ncur - sizeof (void *) * 4; 1423 ncur = ncur - sizeof (void *) * 4;
897 } 1425 }
898 1426
899 return ncur; 1427 return ncur;
900} 1428}
901 1429
902static noinline void * 1430static void * noinline ecb_cold
903array_realloc (int elem, void *base, int *cur, int cnt) 1431array_realloc (int elem, void *base, int *cur, int cnt)
904{ 1432{
905 *cur = array_nextsize (elem, *cur, cnt); 1433 *cur = array_nextsize (elem, *cur, cnt);
906 return ev_realloc (base, elem * *cur); 1434 return ev_realloc (base, elem * *cur);
907} 1435}
910 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1438 memset ((void *)(base), 0, sizeof (*(base)) * (count))
911 1439
912#define array_needsize(type,base,cur,cnt,init) \ 1440#define array_needsize(type,base,cur,cnt,init) \
913 if (expect_false ((cnt) > (cur))) \ 1441 if (expect_false ((cnt) > (cur))) \
914 { \ 1442 { \
915 int ocur_ = (cur); \ 1443 int ecb_unused ocur_ = (cur); \
916 (base) = (type *)array_realloc \ 1444 (base) = (type *)array_realloc \
917 (sizeof (type), (base), &(cur), (cnt)); \ 1445 (sizeof (type), (base), &(cur), (cnt)); \
918 init ((base) + (ocur_), (cur) - ocur_); \ 1446 init ((base) + (ocur_), (cur) - ocur_); \
919 } 1447 }
920 1448
938pendingcb (EV_P_ ev_prepare *w, int revents) 1466pendingcb (EV_P_ ev_prepare *w, int revents)
939{ 1467{
940} 1468}
941 1469
942void noinline 1470void noinline
943ev_feed_event (EV_P_ void *w, int revents) 1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW
944{ 1472{
945 W w_ = (W)w; 1473 W w_ = (W)w;
946 int pri = ABSPRI (w_); 1474 int pri = ABSPRI (w_);
947 1475
948 if (expect_false (w_->pending)) 1476 if (expect_false (w_->pending))
952 w_->pending = ++pendingcnt [pri]; 1480 w_->pending = ++pendingcnt [pri];
953 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
954 pendings [pri][w_->pending - 1].w = w_; 1482 pendings [pri][w_->pending - 1].w = w_;
955 pendings [pri][w_->pending - 1].events = revents; 1483 pendings [pri][w_->pending - 1].events = revents;
956 } 1484 }
1485
1486 pendingpri = NUMPRI - 1;
957} 1487}
958 1488
959inline_speed void 1489inline_speed void
960feed_reverse (EV_P_ W w) 1490feed_reverse (EV_P_ W w)
961{ 1491{
1007 if (expect_true (!anfd->reify)) 1537 if (expect_true (!anfd->reify))
1008 fd_event_nocheck (EV_A_ fd, revents); 1538 fd_event_nocheck (EV_A_ fd, revents);
1009} 1539}
1010 1540
1011void 1541void
1012ev_feed_fd_event (EV_P_ int fd, int revents) 1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1013{ 1543{
1014 if (fd >= 0 && fd < anfdmax) 1544 if (fd >= 0 && fd < anfdmax)
1015 fd_event_nocheck (EV_A_ fd, revents); 1545 fd_event_nocheck (EV_A_ fd, revents);
1016} 1546}
1017 1547
1090 fdchanges [fdchangecnt - 1] = fd; 1620 fdchanges [fdchangecnt - 1] = fd;
1091 } 1621 }
1092} 1622}
1093 1623
1094/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1095inline_speed void 1625inline_speed void ecb_cold
1096fd_kill (EV_P_ int fd) 1626fd_kill (EV_P_ int fd)
1097{ 1627{
1098 ev_io *w; 1628 ev_io *w;
1099 1629
1100 while ((w = (ev_io *)anfds [fd].head)) 1630 while ((w = (ev_io *)anfds [fd].head))
1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1104 } 1634 }
1105} 1635}
1106 1636
1107/* check whether the given fd is actually valid, for error recovery */ 1637/* check whether the given fd is actually valid, for error recovery */
1108inline_size int 1638inline_size int ecb_cold
1109fd_valid (int fd) 1639fd_valid (int fd)
1110{ 1640{
1111#ifdef _WIN32 1641#ifdef _WIN32
1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1113#else 1643#else
1114 return fcntl (fd, F_GETFD) != -1; 1644 return fcntl (fd, F_GETFD) != -1;
1115#endif 1645#endif
1116} 1646}
1117 1647
1118/* called on EBADF to verify fds */ 1648/* called on EBADF to verify fds */
1119static void noinline 1649static void noinline ecb_cold
1120fd_ebadf (EV_P) 1650fd_ebadf (EV_P)
1121{ 1651{
1122 int fd; 1652 int fd;
1123 1653
1124 for (fd = 0; fd < anfdmax; ++fd) 1654 for (fd = 0; fd < anfdmax; ++fd)
1126 if (!fd_valid (fd) && errno == EBADF) 1656 if (!fd_valid (fd) && errno == EBADF)
1127 fd_kill (EV_A_ fd); 1657 fd_kill (EV_A_ fd);
1128} 1658}
1129 1659
1130/* called on ENOMEM in select/poll to kill some fds and retry */ 1660/* called on ENOMEM in select/poll to kill some fds and retry */
1131static void noinline 1661static void noinline ecb_cold
1132fd_enomem (EV_P) 1662fd_enomem (EV_P)
1133{ 1663{
1134 int fd; 1664 int fd;
1135 1665
1136 for (fd = anfdmax; fd--; ) 1666 for (fd = anfdmax; fd--; )
1331 1861
1332/*****************************************************************************/ 1862/*****************************************************************************/
1333 1863
1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1335 1865
1336static void noinline 1866static void noinline ecb_cold
1337evpipe_init (EV_P) 1867evpipe_init (EV_P)
1338{ 1868{
1339 if (!ev_is_active (&pipe_w)) 1869 if (!ev_is_active (&pipe_w))
1340 { 1870 {
1341# if EV_USE_EVENTFD 1871# if EV_USE_EVENTFD
1363 ev_io_start (EV_A_ &pipe_w); 1893 ev_io_start (EV_A_ &pipe_w);
1364 ev_unref (EV_A); /* watcher should not keep loop alive */ 1894 ev_unref (EV_A); /* watcher should not keep loop alive */
1365 } 1895 }
1366} 1896}
1367 1897
1368inline_size void 1898inline_speed void
1369evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1899evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1370{ 1900{
1371 if (!*flag) 1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902
1903 if (expect_true (*flag))
1904 return;
1905
1906 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
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)
1372 { 1914 {
1915 int old_errno;
1916
1917 pipe_write_skipped = 0;
1918 ECB_MEMORY_FENCE_RELEASE;
1919
1373 int old_errno = errno; /* save errno because write might clobber it */ 1920 old_errno = errno; /* save errno because write will clobber it */
1374 char dummy;
1375
1376 *flag = 1;
1377 1921
1378#if EV_USE_EVENTFD 1922#if EV_USE_EVENTFD
1379 if (evfd >= 0) 1923 if (evfd >= 0)
1380 { 1924 {
1381 uint64_t counter = 1; 1925 uint64_t counter = 1;
1382 write (evfd, &counter, sizeof (uint64_t)); 1926 write (evfd, &counter, sizeof (uint64_t));
1383 } 1927 }
1384 else 1928 else
1385#endif 1929#endif
1386 /* win32 people keep sending patches that change this write() to send() */ 1930 {
1387 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1931#ifdef _WIN32
1388 /* so when you think this write should be a send instead, please find out */ 1932 WSABUF buf;
1389 /* where your send() is from - it's definitely not the microsoft send, and */ 1933 DWORD sent;
1390 /* tell me. thank you. */ 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
1391 write (evpipe [1], &dummy, 1); 1938 write (evpipe [1], &(evpipe [1]), 1);
1939#endif
1940 }
1392 1941
1393 errno = old_errno; 1942 errno = old_errno;
1394 } 1943 }
1395} 1944}
1396 1945
1399static void 1948static void
1400pipecb (EV_P_ ev_io *iow, int revents) 1949pipecb (EV_P_ ev_io *iow, int revents)
1401{ 1950{
1402 int i; 1951 int i;
1403 1952
1953 if (revents & EV_READ)
1954 {
1404#if EV_USE_EVENTFD 1955#if EV_USE_EVENTFD
1405 if (evfd >= 0) 1956 if (evfd >= 0)
1406 { 1957 {
1407 uint64_t counter; 1958 uint64_t counter;
1408 read (evfd, &counter, sizeof (uint64_t)); 1959 read (evfd, &counter, sizeof (uint64_t));
1409 } 1960 }
1410 else 1961 else
1411#endif 1962#endif
1412 { 1963 {
1413 char dummy; 1964 char dummy[4];
1414 /* 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
1415 read (evpipe [0], &dummy, 1); 1973 read (evpipe [0], &dummy, sizeof (dummy));
1974#endif
1975 }
1416 } 1976 }
1977
1978 pipe_write_skipped = 0;
1979
1980 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1417 1981
1418#if EV_SIGNAL_ENABLE 1982#if EV_SIGNAL_ENABLE
1419 if (sig_pending) 1983 if (sig_pending)
1420 { 1984 {
1421 sig_pending = 0; 1985 sig_pending = 0;
1986
1987 ECB_MEMORY_FENCE;
1422 1988
1423 for (i = EV_NSIG - 1; i--; ) 1989 for (i = EV_NSIG - 1; i--; )
1424 if (expect_false (signals [i].pending)) 1990 if (expect_false (signals [i].pending))
1425 ev_feed_signal_event (EV_A_ i + 1); 1991 ev_feed_signal_event (EV_A_ i + 1);
1426 } 1992 }
1428 1994
1429#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1430 if (async_pending) 1996 if (async_pending)
1431 { 1997 {
1432 async_pending = 0; 1998 async_pending = 0;
1999
2000 ECB_MEMORY_FENCE;
1433 2001
1434 for (i = asynccnt; i--; ) 2002 for (i = asynccnt; i--; )
1435 if (asyncs [i]->sent) 2003 if (asyncs [i]->sent)
1436 { 2004 {
1437 asyncs [i]->sent = 0; 2005 asyncs [i]->sent = 0;
2006 ECB_MEMORY_FENCE_RELEASE;
1438 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2007 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1439 } 2008 }
1440 } 2009 }
1441#endif 2010#endif
1442} 2011}
1443 2012
1444/*****************************************************************************/ 2013/*****************************************************************************/
1445 2014
1446void 2015void
1447ev_feed_signal (int signum) 2016ev_feed_signal (int signum) EV_THROW
1448{ 2017{
1449#if EV_MULTIPLICITY 2018#if EV_MULTIPLICITY
1450 EV_P = signals [signum - 1].loop; 2019 EV_P = signals [signum - 1].loop;
1451 2020
1452 if (!EV_A) 2021 if (!EV_A)
1453 return; 2022 return;
1454#endif 2023#endif
1455 2024
2025 if (!ev_active (&pipe_w))
2026 return;
2027
1456 signals [signum - 1].pending = 1; 2028 signals [signum - 1].pending = 1;
1457 evpipe_write (EV_A_ &sig_pending); 2029 evpipe_write (EV_A_ &sig_pending);
1458} 2030}
1459 2031
1460static void 2032static void
1466 2038
1467 ev_feed_signal (signum); 2039 ev_feed_signal (signum);
1468} 2040}
1469 2041
1470void noinline 2042void noinline
1471ev_feed_signal_event (EV_P_ int signum) 2043ev_feed_signal_event (EV_P_ int signum) EV_THROW
1472{ 2044{
1473 WL w; 2045 WL w;
1474 2046
1475 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2047 if (expect_false (signum <= 0 || signum > EV_NSIG))
1476 return; 2048 return;
1484 if (expect_false (signals [signum].loop != EV_A)) 2056 if (expect_false (signals [signum].loop != EV_A))
1485 return; 2057 return;
1486#endif 2058#endif
1487 2059
1488 signals [signum].pending = 0; 2060 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE;
1489 2062
1490 for (w = signals [signum].head; w; w = w->next) 2063 for (w = signals [signum].head; w; w = w->next)
1491 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1492} 2065}
1493 2066
1591#endif 2164#endif
1592#if EV_USE_SELECT 2165#if EV_USE_SELECT
1593# include "ev_select.c" 2166# include "ev_select.c"
1594#endif 2167#endif
1595 2168
1596int 2169int ecb_cold
1597ev_version_major (void) 2170ev_version_major (void) EV_THROW
1598{ 2171{
1599 return EV_VERSION_MAJOR; 2172 return EV_VERSION_MAJOR;
1600} 2173}
1601 2174
1602int 2175int ecb_cold
1603ev_version_minor (void) 2176ev_version_minor (void) EV_THROW
1604{ 2177{
1605 return EV_VERSION_MINOR; 2178 return EV_VERSION_MINOR;
1606} 2179}
1607 2180
1608/* 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 */
1609int inline_size 2182int inline_size ecb_cold
1610enable_secure (void) 2183enable_secure (void)
1611{ 2184{
1612#ifdef _WIN32 2185#ifdef _WIN32
1613 return 0; 2186 return 0;
1614#else 2187#else
1615 return getuid () != geteuid () 2188 return getuid () != geteuid ()
1616 || getgid () != getegid (); 2189 || getgid () != getegid ();
1617#endif 2190#endif
1618} 2191}
1619 2192
1620unsigned int 2193unsigned int ecb_cold
1621ev_supported_backends (void) 2194ev_supported_backends (void) EV_THROW
1622{ 2195{
1623 unsigned int flags = 0; 2196 unsigned int flags = 0;
1624 2197
1625 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1626 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1629 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1630 2203
1631 return flags; 2204 return flags;
1632} 2205}
1633 2206
1634unsigned int 2207unsigned int ecb_cold
1635ev_recommended_backends (void) 2208ev_recommended_backends (void) EV_THROW
1636{ 2209{
1637 unsigned int flags = ev_supported_backends (); 2210 unsigned int flags = ev_supported_backends ();
1638 2211
1639#ifndef __NetBSD__ 2212#ifndef __NetBSD__
1640 /* kqueue is borked on everything but netbsd apparently */ 2213 /* kqueue is borked on everything but netbsd apparently */
1651#endif 2224#endif
1652 2225
1653 return flags; 2226 return flags;
1654} 2227}
1655 2228
1656unsigned int 2229unsigned int ecb_cold
1657ev_embeddable_backends (void) 2230ev_embeddable_backends (void) EV_THROW
1658{ 2231{
1659 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1660 2233
1661 /* 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 */
1662 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 */
1664 2237
1665 return flags; 2238 return flags;
1666} 2239}
1667 2240
1668unsigned int 2241unsigned int
1669ev_backend (EV_P) 2242ev_backend (EV_P) EV_THROW
1670{ 2243{
1671 return backend; 2244 return backend;
1672} 2245}
1673 2246
1674#if EV_FEATURE_API 2247#if EV_FEATURE_API
1675unsigned int 2248unsigned int
1676ev_iteration (EV_P) 2249ev_iteration (EV_P) EV_THROW
1677{ 2250{
1678 return loop_count; 2251 return loop_count;
1679} 2252}
1680 2253
1681unsigned int 2254unsigned int
1682ev_depth (EV_P) 2255ev_depth (EV_P) EV_THROW
1683{ 2256{
1684 return loop_depth; 2257 return loop_depth;
1685} 2258}
1686 2259
1687void 2260void
1688ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1689{ 2262{
1690 io_blocktime = interval; 2263 io_blocktime = interval;
1691} 2264}
1692 2265
1693void 2266void
1694ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1695{ 2268{
1696 timeout_blocktime = interval; 2269 timeout_blocktime = interval;
1697} 2270}
1698 2271
1699void 2272void
1700ev_set_userdata (EV_P_ void *data) 2273ev_set_userdata (EV_P_ void *data) EV_THROW
1701{ 2274{
1702 userdata = data; 2275 userdata = data;
1703} 2276}
1704 2277
1705void * 2278void *
1706ev_userdata (EV_P) 2279ev_userdata (EV_P) EV_THROW
1707{ 2280{
1708 return userdata; 2281 return userdata;
1709} 2282}
1710 2283
2284void
1711void ev_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
1712{ 2286{
1713 invoke_cb = invoke_pending_cb; 2287 invoke_cb = invoke_pending_cb;
1714} 2288}
1715 2289
2290void
1716void ev_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
1717{ 2292{
1718 release_cb = release; 2293 release_cb = release;
1719 acquire_cb = acquire; 2294 acquire_cb = acquire;
1720} 2295}
1721#endif 2296#endif
1722 2297
1723/* initialise a loop structure, must be zero-initialised */ 2298/* initialise a loop structure, must be zero-initialised */
1724static void noinline 2299static void noinline ecb_cold
1725loop_init (EV_P_ unsigned int flags) 2300loop_init (EV_P_ unsigned int flags) EV_THROW
1726{ 2301{
1727 if (!backend) 2302 if (!backend)
1728 { 2303 {
1729 origflags = flags; 2304 origflags = flags;
1730 2305
1757 if (!(flags & EVFLAG_NOENV) 2332 if (!(flags & EVFLAG_NOENV)
1758 && !enable_secure () 2333 && !enable_secure ()
1759 && getenv ("LIBEV_FLAGS")) 2334 && getenv ("LIBEV_FLAGS"))
1760 flags = atoi (getenv ("LIBEV_FLAGS")); 2335 flags = atoi (getenv ("LIBEV_FLAGS"));
1761 2336
1762 ev_rt_now = ev_time (); 2337 ev_rt_now = ev_time ();
1763 mn_now = get_clock (); 2338 mn_now = get_clock ();
1764 now_floor = mn_now; 2339 now_floor = mn_now;
1765 rtmn_diff = ev_rt_now - mn_now; 2340 rtmn_diff = ev_rt_now - mn_now;
1766#if EV_FEATURE_API 2341#if EV_FEATURE_API
1767 invoke_cb = ev_invoke_pending; 2342 invoke_cb = ev_invoke_pending;
1768#endif 2343#endif
1769 2344
1770 io_blocktime = 0.; 2345 io_blocktime = 0.;
1771 timeout_blocktime = 0.; 2346 timeout_blocktime = 0.;
1772 backend = 0; 2347 backend = 0;
1773 backend_fd = -1; 2348 backend_fd = -1;
1774 sig_pending = 0; 2349 sig_pending = 0;
1775#if EV_ASYNC_ENABLE 2350#if EV_ASYNC_ENABLE
1776 async_pending = 0; 2351 async_pending = 0;
1777#endif 2352#endif
2353 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0;
1778#if EV_USE_INOTIFY 2355#if EV_USE_INOTIFY
1779 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1780#endif 2357#endif
1781#if EV_USE_SIGNALFD 2358#if EV_USE_SIGNALFD
1782 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1783#endif 2360#endif
1784 2361
1785 if (!(flags & EVBACKEND_MASK)) 2362 if (!(flags & EVBACKEND_MASK))
1786 flags |= ev_recommended_backends (); 2363 flags |= ev_recommended_backends ();
1787 2364
1812#endif 2389#endif
1813 } 2390 }
1814} 2391}
1815 2392
1816/* free up a loop structure */ 2393/* free up a loop structure */
1817void 2394void ecb_cold
1818ev_loop_destroy (EV_P) 2395ev_loop_destroy (EV_P)
1819{ 2396{
1820 int i; 2397 int i;
1821 2398
1822#if EV_MULTIPLICITY 2399#if EV_MULTIPLICITY
1833 EV_INVOKE_PENDING; 2410 EV_INVOKE_PENDING;
1834 } 2411 }
1835#endif 2412#endif
1836 2413
1837#if EV_CHILD_ENABLE 2414#if EV_CHILD_ENABLE
1838 if (ev_is_active (&childev)) 2415 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1839 { 2416 {
1840 ev_ref (EV_A); /* child watcher */ 2417 ev_ref (EV_A); /* child watcher */
1841 ev_signal_stop (EV_A_ &childev); 2418 ev_signal_stop (EV_A_ &childev);
1842 } 2419 }
1843#endif 2420#endif
1952 infy_fork (EV_A); 2529 infy_fork (EV_A);
1953#endif 2530#endif
1954 2531
1955 if (ev_is_active (&pipe_w)) 2532 if (ev_is_active (&pipe_w))
1956 { 2533 {
1957 /* this "locks" the handlers against writing to the pipe */ 2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1958 /* while we modify the fd vars */
1959 sig_pending = 1;
1960#if EV_ASYNC_ENABLE
1961 async_pending = 1;
1962#endif
1963 2535
1964 ev_ref (EV_A); 2536 ev_ref (EV_A);
1965 ev_io_stop (EV_A_ &pipe_w); 2537 ev_io_stop (EV_A_ &pipe_w);
1966 2538
1967#if EV_USE_EVENTFD 2539#if EV_USE_EVENTFD
1985 postfork = 0; 2557 postfork = 0;
1986} 2558}
1987 2559
1988#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
1989 2561
1990struct ev_loop * 2562struct ev_loop * ecb_cold
1991ev_loop_new (unsigned int flags) 2563ev_loop_new (unsigned int flags) EV_THROW
1992{ 2564{
1993 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1994 2566
1995 memset (EV_A, 0, sizeof (struct ev_loop)); 2567 memset (EV_A, 0, sizeof (struct ev_loop));
1996 loop_init (EV_A_ flags); 2568 loop_init (EV_A_ flags);
2003} 2575}
2004 2576
2005#endif /* multiplicity */ 2577#endif /* multiplicity */
2006 2578
2007#if EV_VERIFY 2579#if EV_VERIFY
2008static void noinline 2580static void noinline ecb_cold
2009verify_watcher (EV_P_ W w) 2581verify_watcher (EV_P_ W w)
2010{ 2582{
2011 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2012 2584
2013 if (w->pending) 2585 if (w->pending)
2014 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2015} 2587}
2016 2588
2017static void noinline 2589static void noinline ecb_cold
2018verify_heap (EV_P_ ANHE *heap, int N) 2590verify_heap (EV_P_ ANHE *heap, int N)
2019{ 2591{
2020 int i; 2592 int i;
2021 2593
2022 for (i = HEAP0; i < N + HEAP0; ++i) 2594 for (i = HEAP0; i < N + HEAP0; ++i)
2027 2599
2028 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2029 } 2601 }
2030} 2602}
2031 2603
2032static void noinline 2604static void noinline ecb_cold
2033array_verify (EV_P_ W *ws, int cnt) 2605array_verify (EV_P_ W *ws, int cnt)
2034{ 2606{
2035 while (cnt--) 2607 while (cnt--)
2036 { 2608 {
2037 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2039 } 2611 }
2040} 2612}
2041#endif 2613#endif
2042 2614
2043#if EV_FEATURE_API 2615#if EV_FEATURE_API
2044void 2616void ecb_cold
2045ev_verify (EV_P) 2617ev_verify (EV_P) EV_THROW
2046{ 2618{
2047#if EV_VERIFY 2619#if EV_VERIFY
2048 int i; 2620 int i;
2049 WL w; 2621 WL w, w2;
2050 2622
2051 assert (activecnt >= -1); 2623 assert (activecnt >= -1);
2052 2624
2053 assert (fdchangemax >= fdchangecnt); 2625 assert (fdchangemax >= fdchangecnt);
2054 for (i = 0; i < fdchangecnt; ++i) 2626 for (i = 0; i < fdchangecnt; ++i)
2055 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2627 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2056 2628
2057 assert (anfdmax >= 0); 2629 assert (anfdmax >= 0);
2058 for (i = 0; i < anfdmax; ++i) 2630 for (i = 0; i < anfdmax; ++i)
2631 {
2632 int j = 0;
2633
2059 for (w = anfds [i].head; w; w = w->next) 2634 for (w = w2 = anfds [i].head; w; w = w->next)
2060 { 2635 {
2061 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
2062 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));
2063 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));
2064 } 2646 }
2647 }
2065 2648
2066 assert (timermax >= timercnt); 2649 assert (timermax >= timercnt);
2067 verify_heap (EV_A_ timers, timercnt); 2650 verify_heap (EV_A_ timers, timercnt);
2068 2651
2069#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
2115#endif 2698#endif
2116} 2699}
2117#endif 2700#endif
2118 2701
2119#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
2120struct ev_loop * 2703struct ev_loop * ecb_cold
2121#else 2704#else
2122int 2705int
2123#endif 2706#endif
2124ev_default_loop (unsigned int flags) 2707ev_default_loop (unsigned int flags) EV_THROW
2125{ 2708{
2126 if (!ev_default_loop_ptr) 2709 if (!ev_default_loop_ptr)
2127 { 2710 {
2128#if EV_MULTIPLICITY 2711#if EV_MULTIPLICITY
2129 EV_P = ev_default_loop_ptr = &default_loop_struct; 2712 EV_P = ev_default_loop_ptr = &default_loop_struct;
2148 2731
2149 return ev_default_loop_ptr; 2732 return ev_default_loop_ptr;
2150} 2733}
2151 2734
2152void 2735void
2153ev_loop_fork (EV_P) 2736ev_loop_fork (EV_P) EV_THROW
2154{ 2737{
2155 postfork = 1; /* must be in line with ev_default_fork */ 2738 postfork = 1;
2156} 2739}
2157 2740
2158/*****************************************************************************/ 2741/*****************************************************************************/
2159 2742
2160void 2743void
2162{ 2745{
2163 EV_CB_INVOKE ((W)w, revents); 2746 EV_CB_INVOKE ((W)w, revents);
2164} 2747}
2165 2748
2166unsigned int 2749unsigned int
2167ev_pending_count (EV_P) 2750ev_pending_count (EV_P) EV_THROW
2168{ 2751{
2169 int pri; 2752 int pri;
2170 unsigned int count = 0; 2753 unsigned int count = 0;
2171 2754
2172 for (pri = NUMPRI; pri--; ) 2755 for (pri = NUMPRI; pri--; )
2176} 2759}
2177 2760
2178void noinline 2761void noinline
2179ev_invoke_pending (EV_P) 2762ev_invoke_pending (EV_P)
2180{ 2763{
2181 int pri; 2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2182
2183 for (pri = NUMPRI; pri--; )
2184 while (pendingcnt [pri]) 2765 while (pendingcnt [pendingpri])
2185 { 2766 {
2186 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2187 2768
2188 p->w->pending = 0; 2769 p->w->pending = 0;
2189 EV_CB_INVOKE (p->w, p->events); 2770 EV_CB_INVOKE (p->w, p->events);
2190 EV_FREQUENT_CHECK; 2771 EV_FREQUENT_CHECK;
2191 } 2772 }
2286{ 2867{
2287 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2288 2869
2289 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2870 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2290 { 2871 {
2291 int feed_count = 0;
2292
2293 do 2872 do
2294 { 2873 {
2295 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2296 2875
2297 /*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)));*/
2324 } 2903 }
2325} 2904}
2326 2905
2327/* simply recalculate all periodics */ 2906/* simply recalculate all periodics */
2328/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2907/* TODO: maybe ensure that at least one event happens when jumping forward? */
2329static void noinline 2908static void noinline ecb_cold
2330periodics_reschedule (EV_P) 2909periodics_reschedule (EV_P)
2331{ 2910{
2332 int i; 2911 int i;
2333 2912
2334 /* adjust periodics after time jump */ 2913 /* adjust periodics after time jump */
2347 reheap (periodics, periodiccnt); 2926 reheap (periodics, periodiccnt);
2348} 2927}
2349#endif 2928#endif
2350 2929
2351/* adjust all timers by a given offset */ 2930/* adjust all timers by a given offset */
2352static void noinline 2931static void noinline ecb_cold
2353timers_reschedule (EV_P_ ev_tstamp adjust) 2932timers_reschedule (EV_P_ ev_tstamp adjust)
2354{ 2933{
2355 int i; 2934 int i;
2356 2935
2357 for (i = 0; i < timercnt; ++i) 2936 for (i = 0; i < timercnt; ++i)
2431 3010
2432 mn_now = ev_rt_now; 3011 mn_now = ev_rt_now;
2433 } 3012 }
2434} 3013}
2435 3014
2436void 3015int
2437ev_run (EV_P_ int flags) 3016ev_run (EV_P_ int flags)
2438{ 3017{
2439#if EV_FEATURE_API 3018#if EV_FEATURE_API
2440 ++loop_depth; 3019 ++loop_depth;
2441#endif 3020#endif
2499 ev_tstamp prev_mn_now = mn_now; 3078 ev_tstamp prev_mn_now = mn_now;
2500 3079
2501 /* update time to cancel out callback processing overhead */ 3080 /* update time to cancel out callback processing overhead */
2502 time_update (EV_A_ 1e100); 3081 time_update (EV_A_ 1e100);
2503 3082
3083 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1;
3085
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087
2504 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2505 { 3089 {
2506 waittime = MAX_BLOCKTIME; 3090 waittime = MAX_BLOCKTIME;
2507 3091
2508 if (timercnt) 3092 if (timercnt)
2509 { 3093 {
2549#endif 3133#endif
2550 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3134 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2551 backend_poll (EV_A_ waittime); 3135 backend_poll (EV_A_ waittime);
2552 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2553 3137
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139
3140 MEMORY_FENCE_ACQUIRE;
3141 if (pipe_write_skipped)
3142 {
3143 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3144 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3145 }
3146
3147
2554 /* update ev_rt_now, do magic */ 3148 /* update ev_rt_now, do magic */
2555 time_update (EV_A_ waittime + sleeptime); 3149 time_update (EV_A_ waittime + sleeptime);
2556 } 3150 }
2557 3151
2558 /* queue pending timers and reschedule them */ 3152 /* queue pending timers and reschedule them */
2584 loop_done = EVBREAK_CANCEL; 3178 loop_done = EVBREAK_CANCEL;
2585 3179
2586#if EV_FEATURE_API 3180#if EV_FEATURE_API
2587 --loop_depth; 3181 --loop_depth;
2588#endif 3182#endif
3183
3184 return activecnt;
2589} 3185}
2590 3186
2591void 3187void
2592ev_break (EV_P_ int how) 3188ev_break (EV_P_ int how) EV_THROW
2593{ 3189{
2594 loop_done = how; 3190 loop_done = how;
2595} 3191}
2596 3192
2597void 3193void
2598ev_ref (EV_P) 3194ev_ref (EV_P) EV_THROW
2599{ 3195{
2600 ++activecnt; 3196 ++activecnt;
2601} 3197}
2602 3198
2603void 3199void
2604ev_unref (EV_P) 3200ev_unref (EV_P) EV_THROW
2605{ 3201{
2606 --activecnt; 3202 --activecnt;
2607} 3203}
2608 3204
2609void 3205void
2610ev_now_update (EV_P) 3206ev_now_update (EV_P) EV_THROW
2611{ 3207{
2612 time_update (EV_A_ 1e100); 3208 time_update (EV_A_ 1e100);
2613} 3209}
2614 3210
2615void 3211void
2616ev_suspend (EV_P) 3212ev_suspend (EV_P) EV_THROW
2617{ 3213{
2618 ev_now_update (EV_A); 3214 ev_now_update (EV_A);
2619} 3215}
2620 3216
2621void 3217void
2622ev_resume (EV_P) 3218ev_resume (EV_P) EV_THROW
2623{ 3219{
2624 ev_tstamp mn_prev = mn_now; 3220 ev_tstamp mn_prev = mn_now;
2625 3221
2626 ev_now_update (EV_A); 3222 ev_now_update (EV_A);
2627 timers_reschedule (EV_A_ mn_now - mn_prev); 3223 timers_reschedule (EV_A_ mn_now - mn_prev);
2666 w->pending = 0; 3262 w->pending = 0;
2667 } 3263 }
2668} 3264}
2669 3265
2670int 3266int
2671ev_clear_pending (EV_P_ void *w) 3267ev_clear_pending (EV_P_ void *w) EV_THROW
2672{ 3268{
2673 W w_ = (W)w; 3269 W w_ = (W)w;
2674 int pending = w_->pending; 3270 int pending = w_->pending;
2675 3271
2676 if (expect_true (pending)) 3272 if (expect_true (pending))
2709} 3305}
2710 3306
2711/*****************************************************************************/ 3307/*****************************************************************************/
2712 3308
2713void noinline 3309void noinline
2714ev_io_start (EV_P_ ev_io *w) 3310ev_io_start (EV_P_ ev_io *w) EV_THROW
2715{ 3311{
2716 int fd = w->fd; 3312 int fd = w->fd;
2717 3313
2718 if (expect_false (ev_is_active (w))) 3314 if (expect_false (ev_is_active (w)))
2719 return; 3315 return;
2725 3321
2726 ev_start (EV_A_ (W)w, 1); 3322 ev_start (EV_A_ (W)w, 1);
2727 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3323 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2728 wlist_add (&anfds[fd].head, (WL)w); 3324 wlist_add (&anfds[fd].head, (WL)w);
2729 3325
3326 /* common bug, apparently */
3327 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3328
2730 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);
2731 w->events &= ~EV__IOFDSET; 3330 w->events &= ~EV__IOFDSET;
2732 3331
2733 EV_FREQUENT_CHECK; 3332 EV_FREQUENT_CHECK;
2734} 3333}
2735 3334
2736void noinline 3335void noinline
2737ev_io_stop (EV_P_ ev_io *w) 3336ev_io_stop (EV_P_ ev_io *w) EV_THROW
2738{ 3337{
2739 clear_pending (EV_A_ (W)w); 3338 clear_pending (EV_A_ (W)w);
2740 if (expect_false (!ev_is_active (w))) 3339 if (expect_false (!ev_is_active (w)))
2741 return; 3340 return;
2742 3341
2751 3350
2752 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2753} 3352}
2754 3353
2755void noinline 3354void noinline
2756ev_timer_start (EV_P_ ev_timer *w) 3355ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2757{ 3356{
2758 if (expect_false (ev_is_active (w))) 3357 if (expect_false (ev_is_active (w)))
2759 return; 3358 return;
2760 3359
2761 ev_at (w) += mn_now; 3360 ev_at (w) += mn_now;
2775 3374
2776 /*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));*/
2777} 3376}
2778 3377
2779void noinline 3378void noinline
2780ev_timer_stop (EV_P_ ev_timer *w) 3379ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2781{ 3380{
2782 clear_pending (EV_A_ (W)w); 3381 clear_pending (EV_A_ (W)w);
2783 if (expect_false (!ev_is_active (w))) 3382 if (expect_false (!ev_is_active (w)))
2784 return; 3383 return;
2785 3384
2805 3404
2806 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2807} 3406}
2808 3407
2809void noinline 3408void noinline
2810ev_timer_again (EV_P_ ev_timer *w) 3409ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2811{ 3410{
2812 EV_FREQUENT_CHECK; 3411 EV_FREQUENT_CHECK;
3412
3413 clear_pending (EV_A_ (W)w);
2813 3414
2814 if (ev_is_active (w)) 3415 if (ev_is_active (w))
2815 { 3416 {
2816 if (w->repeat) 3417 if (w->repeat)
2817 { 3418 {
2830 3431
2831 EV_FREQUENT_CHECK; 3432 EV_FREQUENT_CHECK;
2832} 3433}
2833 3434
2834ev_tstamp 3435ev_tstamp
2835ev_timer_remaining (EV_P_ ev_timer *w) 3436ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2836{ 3437{
2837 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3438 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2838} 3439}
2839 3440
2840#if EV_PERIODIC_ENABLE 3441#if EV_PERIODIC_ENABLE
2841void noinline 3442void noinline
2842ev_periodic_start (EV_P_ ev_periodic *w) 3443ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2843{ 3444{
2844 if (expect_false (ev_is_active (w))) 3445 if (expect_false (ev_is_active (w)))
2845 return; 3446 return;
2846 3447
2847 if (w->reschedule_cb) 3448 if (w->reschedule_cb)
2867 3468
2868 /*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));*/
2869} 3470}
2870 3471
2871void noinline 3472void noinline
2872ev_periodic_stop (EV_P_ ev_periodic *w) 3473ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2873{ 3474{
2874 clear_pending (EV_A_ (W)w); 3475 clear_pending (EV_A_ (W)w);
2875 if (expect_false (!ev_is_active (w))) 3476 if (expect_false (!ev_is_active (w)))
2876 return; 3477 return;
2877 3478
2895 3496
2896 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2897} 3498}
2898 3499
2899void noinline 3500void noinline
2900ev_periodic_again (EV_P_ ev_periodic *w) 3501ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2901{ 3502{
2902 /* TODO: use adjustheap and recalculation */ 3503 /* TODO: use adjustheap and recalculation */
2903 ev_periodic_stop (EV_A_ w); 3504 ev_periodic_stop (EV_A_ w);
2904 ev_periodic_start (EV_A_ w); 3505 ev_periodic_start (EV_A_ w);
2905} 3506}
2910#endif 3511#endif
2911 3512
2912#if EV_SIGNAL_ENABLE 3513#if EV_SIGNAL_ENABLE
2913 3514
2914void noinline 3515void noinline
2915ev_signal_start (EV_P_ ev_signal *w) 3516ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2916{ 3517{
2917 if (expect_false (ev_is_active (w))) 3518 if (expect_false (ev_is_active (w)))
2918 return; 3519 return;
2919 3520
2920 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));
2991 3592
2992 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2993} 3594}
2994 3595
2995void noinline 3596void noinline
2996ev_signal_stop (EV_P_ ev_signal *w) 3597ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2997{ 3598{
2998 clear_pending (EV_A_ (W)w); 3599 clear_pending (EV_A_ (W)w);
2999 if (expect_false (!ev_is_active (w))) 3600 if (expect_false (!ev_is_active (w)))
3000 return; 3601 return;
3001 3602
3032#endif 3633#endif
3033 3634
3034#if EV_CHILD_ENABLE 3635#if EV_CHILD_ENABLE
3035 3636
3036void 3637void
3037ev_child_start (EV_P_ ev_child *w) 3638ev_child_start (EV_P_ ev_child *w) EV_THROW
3038{ 3639{
3039#if EV_MULTIPLICITY 3640#if EV_MULTIPLICITY
3040 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));
3041#endif 3642#endif
3042 if (expect_false (ev_is_active (w))) 3643 if (expect_false (ev_is_active (w)))
3049 3650
3050 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
3051} 3652}
3052 3653
3053void 3654void
3054ev_child_stop (EV_P_ ev_child *w) 3655ev_child_stop (EV_P_ ev_child *w) EV_THROW
3055{ 3656{
3056 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
3057 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
3058 return; 3659 return;
3059 3660
3211 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3812 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3212 ofs += sizeof (struct inotify_event) + ev->len; 3813 ofs += sizeof (struct inotify_event) + ev->len;
3213 } 3814 }
3214} 3815}
3215 3816
3216inline_size void 3817inline_size void ecb_cold
3217ev_check_2625 (EV_P) 3818ev_check_2625 (EV_P)
3218{ 3819{
3219 /* kernels < 2.6.25 are borked 3820 /* kernels < 2.6.25 are borked
3220 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3821 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3221 */ 3822 */
3226} 3827}
3227 3828
3228inline_size int 3829inline_size int
3229infy_newfd (void) 3830infy_newfd (void)
3230{ 3831{
3231#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3832#if defined IN_CLOEXEC && defined IN_NONBLOCK
3232 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3833 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3233 if (fd >= 0) 3834 if (fd >= 0)
3234 return fd; 3835 return fd;
3235#endif 3836#endif
3236 return inotify_init (); 3837 return inotify_init ();
3311#else 3912#else
3312# define EV_LSTAT(p,b) lstat (p, b) 3913# define EV_LSTAT(p,b) lstat (p, b)
3313#endif 3914#endif
3314 3915
3315void 3916void
3316ev_stat_stat (EV_P_ ev_stat *w) 3917ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3317{ 3918{
3318 if (lstat (w->path, &w->attr) < 0) 3919 if (lstat (w->path, &w->attr) < 0)
3319 w->attr.st_nlink = 0; 3920 w->attr.st_nlink = 0;
3320 else if (!w->attr.st_nlink) 3921 else if (!w->attr.st_nlink)
3321 w->attr.st_nlink = 1; 3922 w->attr.st_nlink = 1;
3360 ev_feed_event (EV_A_ w, EV_STAT); 3961 ev_feed_event (EV_A_ w, EV_STAT);
3361 } 3962 }
3362} 3963}
3363 3964
3364void 3965void
3365ev_stat_start (EV_P_ ev_stat *w) 3966ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3366{ 3967{
3367 if (expect_false (ev_is_active (w))) 3968 if (expect_false (ev_is_active (w)))
3368 return; 3969 return;
3369 3970
3370 ev_stat_stat (EV_A_ w); 3971 ev_stat_stat (EV_A_ w);
3391 3992
3392 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
3393} 3994}
3394 3995
3395void 3996void
3396ev_stat_stop (EV_P_ ev_stat *w) 3997ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3397{ 3998{
3398 clear_pending (EV_A_ (W)w); 3999 clear_pending (EV_A_ (W)w);
3399 if (expect_false (!ev_is_active (w))) 4000 if (expect_false (!ev_is_active (w)))
3400 return; 4001 return;
3401 4002
3417} 4018}
3418#endif 4019#endif
3419 4020
3420#if EV_IDLE_ENABLE 4021#if EV_IDLE_ENABLE
3421void 4022void
3422ev_idle_start (EV_P_ ev_idle *w) 4023ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3423{ 4024{
3424 if (expect_false (ev_is_active (w))) 4025 if (expect_false (ev_is_active (w)))
3425 return; 4026 return;
3426 4027
3427 pri_adjust (EV_A_ (W)w); 4028 pri_adjust (EV_A_ (W)w);
3440 4041
3441 EV_FREQUENT_CHECK; 4042 EV_FREQUENT_CHECK;
3442} 4043}
3443 4044
3444void 4045void
3445ev_idle_stop (EV_P_ ev_idle *w) 4046ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3446{ 4047{
3447 clear_pending (EV_A_ (W)w); 4048 clear_pending (EV_A_ (W)w);
3448 if (expect_false (!ev_is_active (w))) 4049 if (expect_false (!ev_is_active (w)))
3449 return; 4050 return;
3450 4051
3464} 4065}
3465#endif 4066#endif
3466 4067
3467#if EV_PREPARE_ENABLE 4068#if EV_PREPARE_ENABLE
3468void 4069void
3469ev_prepare_start (EV_P_ ev_prepare *w) 4070ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3470{ 4071{
3471 if (expect_false (ev_is_active (w))) 4072 if (expect_false (ev_is_active (w)))
3472 return; 4073 return;
3473 4074
3474 EV_FREQUENT_CHECK; 4075 EV_FREQUENT_CHECK;
3479 4080
3480 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
3481} 4082}
3482 4083
3483void 4084void
3484ev_prepare_stop (EV_P_ ev_prepare *w) 4085ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3485{ 4086{
3486 clear_pending (EV_A_ (W)w); 4087 clear_pending (EV_A_ (W)w);
3487 if (expect_false (!ev_is_active (w))) 4088 if (expect_false (!ev_is_active (w)))
3488 return; 4089 return;
3489 4090
3502} 4103}
3503#endif 4104#endif
3504 4105
3505#if EV_CHECK_ENABLE 4106#if EV_CHECK_ENABLE
3506void 4107void
3507ev_check_start (EV_P_ ev_check *w) 4108ev_check_start (EV_P_ ev_check *w) EV_THROW
3508{ 4109{
3509 if (expect_false (ev_is_active (w))) 4110 if (expect_false (ev_is_active (w)))
3510 return; 4111 return;
3511 4112
3512 EV_FREQUENT_CHECK; 4113 EV_FREQUENT_CHECK;
3517 4118
3518 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
3519} 4120}
3520 4121
3521void 4122void
3522ev_check_stop (EV_P_ ev_check *w) 4123ev_check_stop (EV_P_ ev_check *w) EV_THROW
3523{ 4124{
3524 clear_pending (EV_A_ (W)w); 4125 clear_pending (EV_A_ (W)w);
3525 if (expect_false (!ev_is_active (w))) 4126 if (expect_false (!ev_is_active (w)))
3526 return; 4127 return;
3527 4128
3540} 4141}
3541#endif 4142#endif
3542 4143
3543#if EV_EMBED_ENABLE 4144#if EV_EMBED_ENABLE
3544void noinline 4145void noinline
3545ev_embed_sweep (EV_P_ ev_embed *w) 4146ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3546{ 4147{
3547 ev_run (w->other, EVRUN_NOWAIT); 4148 ev_run (w->other, EVRUN_NOWAIT);
3548} 4149}
3549 4150
3550static void 4151static void
3598 ev_idle_stop (EV_A_ idle); 4199 ev_idle_stop (EV_A_ idle);
3599} 4200}
3600#endif 4201#endif
3601 4202
3602void 4203void
3603ev_embed_start (EV_P_ ev_embed *w) 4204ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3604{ 4205{
3605 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
3606 return; 4207 return;
3607 4208
3608 { 4209 {
3629 4230
3630 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
3631} 4232}
3632 4233
3633void 4234void
3634ev_embed_stop (EV_P_ ev_embed *w) 4235ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3635{ 4236{
3636 clear_pending (EV_A_ (W)w); 4237 clear_pending (EV_A_ (W)w);
3637 if (expect_false (!ev_is_active (w))) 4238 if (expect_false (!ev_is_active (w)))
3638 return; 4239 return;
3639 4240
3649} 4250}
3650#endif 4251#endif
3651 4252
3652#if EV_FORK_ENABLE 4253#if EV_FORK_ENABLE
3653void 4254void
3654ev_fork_start (EV_P_ ev_fork *w) 4255ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3655{ 4256{
3656 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
3657 return; 4258 return;
3658 4259
3659 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
3664 4265
3665 EV_FREQUENT_CHECK; 4266 EV_FREQUENT_CHECK;
3666} 4267}
3667 4268
3668void 4269void
3669ev_fork_stop (EV_P_ ev_fork *w) 4270ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3670{ 4271{
3671 clear_pending (EV_A_ (W)w); 4272 clear_pending (EV_A_ (W)w);
3672 if (expect_false (!ev_is_active (w))) 4273 if (expect_false (!ev_is_active (w)))
3673 return; 4274 return;
3674 4275
3687} 4288}
3688#endif 4289#endif
3689 4290
3690#if EV_CLEANUP_ENABLE 4291#if EV_CLEANUP_ENABLE
3691void 4292void
3692ev_cleanup_start (EV_P_ ev_cleanup *w) 4293ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3693{ 4294{
3694 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
3695 return; 4296 return;
3696 4297
3697 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
3704 ev_unref (EV_A); 4305 ev_unref (EV_A);
3705 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3706} 4307}
3707 4308
3708void 4309void
3709ev_cleanup_stop (EV_P_ ev_cleanup *w) 4310ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3710{ 4311{
3711 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3712 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3713 return; 4314 return;
3714 4315
3728} 4329}
3729#endif 4330#endif
3730 4331
3731#if EV_ASYNC_ENABLE 4332#if EV_ASYNC_ENABLE
3732void 4333void
3733ev_async_start (EV_P_ ev_async *w) 4334ev_async_start (EV_P_ ev_async *w) EV_THROW
3734{ 4335{
3735 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
3736 return; 4337 return;
3737 4338
3738 w->sent = 0; 4339 w->sent = 0;
3747 4348
3748 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3749} 4350}
3750 4351
3751void 4352void
3752ev_async_stop (EV_P_ ev_async *w) 4353ev_async_stop (EV_P_ ev_async *w) EV_THROW
3753{ 4354{
3754 clear_pending (EV_A_ (W)w); 4355 clear_pending (EV_A_ (W)w);
3755 if (expect_false (!ev_is_active (w))) 4356 if (expect_false (!ev_is_active (w)))
3756 return; 4357 return;
3757 4358
3768 4369
3769 EV_FREQUENT_CHECK; 4370 EV_FREQUENT_CHECK;
3770} 4371}
3771 4372
3772void 4373void
3773ev_async_send (EV_P_ ev_async *w) 4374ev_async_send (EV_P_ ev_async *w) EV_THROW
3774{ 4375{
3775 w->sent = 1; 4376 w->sent = 1;
3776 evpipe_write (EV_A_ &async_pending); 4377 evpipe_write (EV_A_ &async_pending);
3777} 4378}
3778#endif 4379#endif
3815 4416
3816 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));
3817} 4418}
3818 4419
3819void 4420void
3820ev_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
3821{ 4422{
3822 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));
3823 4424
3824 if (expect_false (!once)) 4425 if (expect_false (!once))
3825 { 4426 {
3846} 4447}
3847 4448
3848/*****************************************************************************/ 4449/*****************************************************************************/
3849 4450
3850#if EV_WALK_ENABLE 4451#if EV_WALK_ENABLE
3851void 4452void ecb_cold
3852ev_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
3853{ 4454{
3854 int i, j; 4455 int i, j;
3855 ev_watcher_list *wl, *wn; 4456 ev_watcher_list *wl, *wn;
3856 4457
3857 if (types & (EV_IO | EV_EMBED)) 4458 if (types & (EV_IO | EV_EMBED))
3900 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4501 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3901#endif 4502#endif
3902 4503
3903#if EV_IDLE_ENABLE 4504#if EV_IDLE_ENABLE
3904 if (types & EV_IDLE) 4505 if (types & EV_IDLE)
3905 for (j = NUMPRI; i--; ) 4506 for (j = NUMPRI; j--; )
3906 for (i = idlecnt [j]; i--; ) 4507 for (i = idlecnt [j]; i--; )
3907 cb (EV_A_ EV_IDLE, idles [j][i]); 4508 cb (EV_A_ EV_IDLE, idles [j][i]);
3908#endif 4509#endif
3909 4510
3910#if EV_FORK_ENABLE 4511#if EV_FORK_ENABLE
3963 4564
3964#if EV_MULTIPLICITY 4565#if EV_MULTIPLICITY
3965 #include "ev_wrap.h" 4566 #include "ev_wrap.h"
3966#endif 4567#endif
3967 4568
3968EV_CPP(})
3969

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