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Comparing libev/ev.c (file contents):
Revision 1.381 by root, Mon Jun 27 21:29:35 2011 UTC vs.
Revision 1.438 by root, Tue May 29 21:03:44 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 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
627 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
628 #elif _MSC_VER >= 1400 /* VC++ 2005 */
629 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
630 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
631 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
632 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
633 #elif defined _WIN32
634 #include <WinNT.h>
635 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
636 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
637 #include <mbarrier.h>
638 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
639 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
640 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
641 #elif __xlC__
642 #define ECB_MEMORY_FENCE __sync ()
643 #endif
644#endif
645
646#ifndef ECB_MEMORY_FENCE
647 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
648 /* we assume that these memory fences work on all variables/all memory accesses, */
649 /* not just C11 atomics and atomic accesses */
650 #include <stdatomic.h>
651 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
652 /* simple barrier semantics. That means we need to take out thor's hammer. */
653 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
654 #endif
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
486 685
487#if __cplusplus 686#if __cplusplus
488 #define ecb_inline static inline 687 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 688#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 689 #define ecb_inline static __inline__
491#elif ECB_C99 690#elif ECB_C99
492 #define ecb_inline static inline 691 #define ecb_inline static inline
493#else 692#else
494 #define ecb_inline static 693 #define ecb_inline static
495#endif 694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
496 712
497#if ECB_GCC_VERSION(3,1) 713#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist) 714 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr) 715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
504 #define ecb_is_constant(expr) 0 720 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr) 721 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality) 722 #define ecb_prefetch(addr,rw,locality)
507#endif 723#endif
508 724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
509#define ecb_noinline ecb_attribute ((__noinline__)) 732#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__)) 733#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__)) 734#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__)) 735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
514 742
515#if ECB_GCC_VERSION(4,3) 743#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__)) 744 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__)) 745 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__)) 746 #define ecb_cold ecb_attribute ((__cold__))
525/* put around conditional expressions if you are very sure that the */ 753/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */ 754/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */ 755/* booleans, not the expression. */
528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */ 758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
531 1008
532#define expect_false(cond) ecb_expect_false (cond) 1009#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond) 1010#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline 1011#define noinline ecb_noinline
535 1012
681{ 1158{
682 write (STDERR_FILENO, msg, strlen (msg)); 1159 write (STDERR_FILENO, msg, strlen (msg));
683} 1160}
684#endif 1161#endif
685 1162
686static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
687 1164
688void ecb_cold 1165void ecb_cold
689ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
690{ 1167{
691 syserr_cb = cb; 1168 syserr_cb = cb;
692} 1169}
693 1170
694static void noinline ecb_cold 1171static void noinline ecb_cold
712 abort (); 1189 abort ();
713 } 1190 }
714} 1191}
715 1192
716static void * 1193static void *
717ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
718{ 1195{
719#if __GLIBC__ 1196#if __GLIBC__
720 return realloc (ptr, size); 1197 return realloc (ptr, size);
721#else 1198#else
722 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
730 free (ptr); 1207 free (ptr);
731 return 0; 1208 return 0;
732#endif 1209#endif
733} 1210}
734 1211
735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
736 1213
737void ecb_cold 1214void ecb_cold
738ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
739{ 1216{
740 alloc = cb; 1217 alloc = cb;
741} 1218}
742 1219
743inline_speed void * 1220inline_speed void *
831 #undef VAR 1308 #undef VAR
832 }; 1309 };
833 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
834 1311
835 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
836 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
837 1314
838#else 1315#else
839 1316
840 ev_tstamp ev_rt_now; 1317 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; 1318 #define VAR(name,decl) static decl;
842 #include "ev_vars.h" 1319 #include "ev_vars.h"
843 #undef VAR 1320 #undef VAR
844 1321
845 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
860 1337
861/*****************************************************************************/ 1338/*****************************************************************************/
862 1339
863#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
864ev_tstamp 1341ev_tstamp
865ev_time (void) 1342ev_time (void) EV_THROW
866{ 1343{
867#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
868 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
869 { 1346 {
870 struct timespec ts; 1347 struct timespec ts;
894 return ev_time (); 1371 return ev_time ();
895} 1372}
896 1373
897#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
898ev_tstamp 1375ev_tstamp
899ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
900{ 1377{
901 return ev_rt_now; 1378 return ev_rt_now;
902} 1379}
903#endif 1380#endif
904 1381
905void 1382void
906ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
907{ 1384{
908 if (delay > 0.) 1385 if (delay > 0.)
909 { 1386 {
910#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
911 struct timespec ts; 1388 struct timespec ts;
912 1389
913 EV_TS_SET (ts, delay); 1390 EV_TS_SET (ts, delay);
914 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
915#elif defined(_WIN32) 1392#elif defined _WIN32
916 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
917#else 1394#else
918 struct timeval tv; 1395 struct timeval tv;
919 1396
920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
939 1416
940 do 1417 do
941 ncur <<= 1; 1418 ncur <<= 1;
942 while (cnt > ncur); 1419 while (cnt > ncur);
943 1420
944 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
945 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946 { 1423 {
947 ncur *= elem; 1424 ncur *= elem;
948 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
949 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
965 1442
966#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
967 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
968 { \ 1445 { \
969 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
970 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
971 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
972 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
973 } 1450 }
974 1451
992pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
993{ 1470{
994} 1471}
995 1472
996void noinline 1473void noinline
997ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
998{ 1475{
999 W w_ = (W)w; 1476 W w_ = (W)w;
1000 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
1001 1478
1002 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
1006 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
1007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1008 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
1009 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
1010 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
1011} 1490}
1012 1491
1013inline_speed void 1492inline_speed void
1014feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
1015{ 1494{
1061 if (expect_true (!anfd->reify)) 1540 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents); 1541 fd_event_nocheck (EV_A_ fd, revents);
1063} 1542}
1064 1543
1065void 1544void
1066ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1067{ 1546{
1068 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
1069 fd_event_nocheck (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
1070} 1549}
1071 1550
1420} 1899}
1421 1900
1422inline_speed void 1901inline_speed void
1423evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1424{ 1903{
1425 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1426 { 1905
1906 if (expect_true (*flag))
1907 return;
1908
1427 *flag = 1; 1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1428 1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1917 {
1918 int old_errno;
1919
1429 pipe_write_skipped = 1; 1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1430 1922
1431 if (pipe_write_wanted) 1923 old_errno = errno; /* save errno because write will clobber it */
1924
1925#if EV_USE_EVENTFD
1926 if (evfd >= 0)
1432 { 1927 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1; 1928 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1457 } 1930 }
1931 else
1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1944
1945 errno = old_errno;
1458 } 1946 }
1459} 1947}
1460 1948
1461/* called whenever the libev signal pipe */ 1949/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */ 1950/* got some events (signal, async) */
1474 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1475 } 1963 }
1476 else 1964 else
1477#endif 1965#endif
1478 { 1966 {
1479 char dummy; 1967 char dummy[4];
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1481 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1482 } 1978 }
1483 } 1979 }
1484 1980
1485 pipe_write_skipped = 0; 1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1486 1984
1487#if EV_SIGNAL_ENABLE 1985#if EV_SIGNAL_ENABLE
1488 if (sig_pending) 1986 if (sig_pending)
1489 { 1987 {
1490 sig_pending = 0; 1988 sig_pending = 0;
1989
1990 ECB_MEMORY_FENCE;
1491 1991
1492 for (i = EV_NSIG - 1; i--; ) 1992 for (i = EV_NSIG - 1; i--; )
1493 if (expect_false (signals [i].pending)) 1993 if (expect_false (signals [i].pending))
1494 ev_feed_signal_event (EV_A_ i + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1495 } 1995 }
1497 1997
1498#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1499 if (async_pending) 1999 if (async_pending)
1500 { 2000 {
1501 async_pending = 0; 2001 async_pending = 0;
2002
2003 ECB_MEMORY_FENCE;
1502 2004
1503 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1504 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1505 { 2007 {
1506 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1507 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1508 } 2011 }
1509 } 2012 }
1510#endif 2013#endif
1511} 2014}
1512 2015
1513/*****************************************************************************/ 2016/*****************************************************************************/
1514 2017
1515void 2018void
1516ev_feed_signal (int signum) 2019ev_feed_signal (int signum) EV_THROW
1517{ 2020{
1518#if EV_MULTIPLICITY 2021#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop; 2022 EV_P = signals [signum - 1].loop;
1520 2023
1521 if (!EV_A) 2024 if (!EV_A)
1538 2041
1539 ev_feed_signal (signum); 2042 ev_feed_signal (signum);
1540} 2043}
1541 2044
1542void noinline 2045void noinline
1543ev_feed_signal_event (EV_P_ int signum) 2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
1544{ 2047{
1545 WL w; 2048 WL w;
1546 2049
1547 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
1548 return; 2051 return;
1556 if (expect_false (signals [signum].loop != EV_A)) 2059 if (expect_false (signals [signum].loop != EV_A))
1557 return; 2060 return;
1558#endif 2061#endif
1559 2062
1560 signals [signum].pending = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1561 2065
1562 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1563 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1564} 2068}
1565 2069
1664#if EV_USE_SELECT 2168#if EV_USE_SELECT
1665# include "ev_select.c" 2169# include "ev_select.c"
1666#endif 2170#endif
1667 2171
1668int ecb_cold 2172int ecb_cold
1669ev_version_major (void) 2173ev_version_major (void) EV_THROW
1670{ 2174{
1671 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1672} 2176}
1673 2177
1674int ecb_cold 2178int ecb_cold
1675ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1676{ 2180{
1677 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1678} 2182}
1679 2183
1680/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1688 || getgid () != getegid (); 2192 || getgid () != getegid ();
1689#endif 2193#endif
1690} 2194}
1691 2195
1692unsigned int ecb_cold 2196unsigned int ecb_cold
1693ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1694{ 2198{
1695 unsigned int flags = 0; 2199 unsigned int flags = 0;
1696 2200
1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1698 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1702 2206
1703 return flags; 2207 return flags;
1704} 2208}
1705 2209
1706unsigned int ecb_cold 2210unsigned int ecb_cold
1707ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1708{ 2212{
1709 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1710 2214
1711#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1712 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
1724 2228
1725 return flags; 2229 return flags;
1726} 2230}
1727 2231
1728unsigned int ecb_cold 2232unsigned int ecb_cold
1729ev_embeddable_backends (void) 2233ev_embeddable_backends (void) EV_THROW
1730{ 2234{
1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1732 2236
1733 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1736 2240
1737 return flags; 2241 return flags;
1738} 2242}
1739 2243
1740unsigned int 2244unsigned int
1741ev_backend (EV_P) 2245ev_backend (EV_P) EV_THROW
1742{ 2246{
1743 return backend; 2247 return backend;
1744} 2248}
1745 2249
1746#if EV_FEATURE_API 2250#if EV_FEATURE_API
1747unsigned int 2251unsigned int
1748ev_iteration (EV_P) 2252ev_iteration (EV_P) EV_THROW
1749{ 2253{
1750 return loop_count; 2254 return loop_count;
1751} 2255}
1752 2256
1753unsigned int 2257unsigned int
1754ev_depth (EV_P) 2258ev_depth (EV_P) EV_THROW
1755{ 2259{
1756 return loop_depth; 2260 return loop_depth;
1757} 2261}
1758 2262
1759void 2263void
1760ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1761{ 2265{
1762 io_blocktime = interval; 2266 io_blocktime = interval;
1763} 2267}
1764 2268
1765void 2269void
1766ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1767{ 2271{
1768 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1769} 2273}
1770 2274
1771void 2275void
1772ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
1773{ 2277{
1774 userdata = data; 2278 userdata = data;
1775} 2279}
1776 2280
1777void * 2281void *
1778ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
1779{ 2283{
1780 return userdata; 2284 return userdata;
1781} 2285}
1782 2286
1783void 2287void
1784ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1785{ 2289{
1786 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
1787} 2291}
1788 2292
1789void 2293void
1790ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1791{ 2295{
1792 release_cb = release; 2296 release_cb = release;
1793 acquire_cb = acquire; 2297 acquire_cb = acquire;
1794} 2298}
1795#endif 2299#endif
1796 2300
1797/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
1798static void noinline ecb_cold 2302static void noinline ecb_cold
1799loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1800{ 2304{
1801 if (!backend) 2305 if (!backend)
1802 { 2306 {
1803 origflags = flags; 2307 origflags = flags;
1804 2308
1909 EV_INVOKE_PENDING; 2413 EV_INVOKE_PENDING;
1910 } 2414 }
1911#endif 2415#endif
1912 2416
1913#if EV_CHILD_ENABLE 2417#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev)) 2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1915 { 2419 {
1916 ev_ref (EV_A); /* child watcher */ 2420 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev); 2421 ev_signal_stop (EV_A_ &childev);
1918 } 2422 }
1919#endif 2423#endif
2057} 2561}
2058 2562
2059#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
2060 2564
2061struct ev_loop * ecb_cold 2565struct ev_loop * ecb_cold
2062ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
2063{ 2567{
2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2065 2569
2066 memset (EV_A, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
2067 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
2111} 2615}
2112#endif 2616#endif
2113 2617
2114#if EV_FEATURE_API 2618#if EV_FEATURE_API
2115void ecb_cold 2619void ecb_cold
2116ev_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
2117{ 2621{
2118#if EV_VERIFY 2622#if EV_VERIFY
2119 int i; 2623 int i;
2120 WL w; 2624 WL w, w2;
2121 2625
2122 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
2123 2627
2124 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
2125 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
2126 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2127 2631
2128 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
2129 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
2130 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
2131 { 2638 {
2132 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
2133 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2134 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2135 } 2649 }
2650 }
2136 2651
2137 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
2138 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
2139 2654
2140#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
2190#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
2191struct ev_loop * ecb_cold 2706struct ev_loop * ecb_cold
2192#else 2707#else
2193int 2708int
2194#endif 2709#endif
2195ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
2196{ 2711{
2197 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
2198 { 2713 {
2199#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
2200 EV_P = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
2219 2734
2220 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
2221} 2736}
2222 2737
2223void 2738void
2224ev_loop_fork (EV_P) 2739ev_loop_fork (EV_P) EV_THROW
2225{ 2740{
2226 postfork = 1; /* must be in line with ev_default_fork */ 2741 postfork = 1; /* must be in line with ev_default_fork */
2227} 2742}
2228 2743
2229/*****************************************************************************/ 2744/*****************************************************************************/
2233{ 2748{
2234 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
2235} 2750}
2236 2751
2237unsigned int 2752unsigned int
2238ev_pending_count (EV_P) 2753ev_pending_count (EV_P) EV_THROW
2239{ 2754{
2240 int pri; 2755 int pri;
2241 unsigned int count = 0; 2756 unsigned int count = 0;
2242 2757
2243 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
2247} 2762}
2248 2763
2249void noinline 2764void noinline
2250ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
2251{ 2766{
2252 int pri; 2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2253
2254 for (pri = NUMPRI; pri--; )
2255 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
2256 { 2769 {
2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2258 2771
2259 p->w->pending = 0; 2772 p->w->pending = 0;
2260 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2261 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2262 } 2775 }
2357{ 2870{
2358 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2359 2872
2360 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2361 { 2874 {
2362 int feed_count = 0;
2363
2364 do 2875 do
2365 { 2876 {
2366 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2367 2878
2368 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2502 3013
2503 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
2504 } 3015 }
2505} 3016}
2506 3017
2507void 3018int
2508ev_run (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
2509{ 3020{
2510#if EV_FEATURE_API 3021#if EV_FEATURE_API
2511 ++loop_depth; 3022 ++loop_depth;
2512#endif 3023#endif
2573 time_update (EV_A_ 1e100); 3084 time_update (EV_A_ 1e100);
2574 3085
2575 /* from now on, we want a pipe-wake-up */ 3086 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1; 3087 pipe_write_wanted = 1;
2577 3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2579 { 3092 {
2580 waittime = MAX_BLOCKTIME; 3093 waittime = MAX_BLOCKTIME;
2581 3094
2582 if (timercnt) 3095 if (timercnt)
2623#endif 3136#endif
2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2625 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627 3140
2628 pipe_write_wanted = 0; 3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2629 3142
2630 if (pipe_write_skipped) 3143 if (pipe_write_skipped)
2631 { 3144 {
2632 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3145 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3146 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2667 loop_done = EVBREAK_CANCEL; 3180 loop_done = EVBREAK_CANCEL;
2668 3181
2669#if EV_FEATURE_API 3182#if EV_FEATURE_API
2670 --loop_depth; 3183 --loop_depth;
2671#endif 3184#endif
3185
3186 return activecnt;
2672} 3187}
2673 3188
2674void 3189void
2675ev_break (EV_P_ int how) 3190ev_break (EV_P_ int how) EV_THROW
2676{ 3191{
2677 loop_done = how; 3192 loop_done = how;
2678} 3193}
2679 3194
2680void 3195void
2681ev_ref (EV_P) 3196ev_ref (EV_P) EV_THROW
2682{ 3197{
2683 ++activecnt; 3198 ++activecnt;
2684} 3199}
2685 3200
2686void 3201void
2687ev_unref (EV_P) 3202ev_unref (EV_P) EV_THROW
2688{ 3203{
2689 --activecnt; 3204 --activecnt;
2690} 3205}
2691 3206
2692void 3207void
2693ev_now_update (EV_P) 3208ev_now_update (EV_P) EV_THROW
2694{ 3209{
2695 time_update (EV_A_ 1e100); 3210 time_update (EV_A_ 1e100);
2696} 3211}
2697 3212
2698void 3213void
2699ev_suspend (EV_P) 3214ev_suspend (EV_P) EV_THROW
2700{ 3215{
2701 ev_now_update (EV_A); 3216 ev_now_update (EV_A);
2702} 3217}
2703 3218
2704void 3219void
2705ev_resume (EV_P) 3220ev_resume (EV_P) EV_THROW
2706{ 3221{
2707 ev_tstamp mn_prev = mn_now; 3222 ev_tstamp mn_prev = mn_now;
2708 3223
2709 ev_now_update (EV_A); 3224 ev_now_update (EV_A);
2710 timers_reschedule (EV_A_ mn_now - mn_prev); 3225 timers_reschedule (EV_A_ mn_now - mn_prev);
2749 w->pending = 0; 3264 w->pending = 0;
2750 } 3265 }
2751} 3266}
2752 3267
2753int 3268int
2754ev_clear_pending (EV_P_ void *w) 3269ev_clear_pending (EV_P_ void *w) EV_THROW
2755{ 3270{
2756 W w_ = (W)w; 3271 W w_ = (W)w;
2757 int pending = w_->pending; 3272 int pending = w_->pending;
2758 3273
2759 if (expect_true (pending)) 3274 if (expect_true (pending))
2792} 3307}
2793 3308
2794/*****************************************************************************/ 3309/*****************************************************************************/
2795 3310
2796void noinline 3311void noinline
2797ev_io_start (EV_P_ ev_io *w) 3312ev_io_start (EV_P_ ev_io *w) EV_THROW
2798{ 3313{
2799 int fd = w->fd; 3314 int fd = w->fd;
2800 3315
2801 if (expect_false (ev_is_active (w))) 3316 if (expect_false (ev_is_active (w)))
2802 return; 3317 return;
2808 3323
2809 ev_start (EV_A_ (W)w, 1); 3324 ev_start (EV_A_ (W)w, 1);
2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3325 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2811 wlist_add (&anfds[fd].head, (WL)w); 3326 wlist_add (&anfds[fd].head, (WL)w);
2812 3327
3328 /* common bug, apparently */
3329 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3330
2813 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3331 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2814 w->events &= ~EV__IOFDSET; 3332 w->events &= ~EV__IOFDSET;
2815 3333
2816 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2817} 3335}
2818 3336
2819void noinline 3337void noinline
2820ev_io_stop (EV_P_ ev_io *w) 3338ev_io_stop (EV_P_ ev_io *w) EV_THROW
2821{ 3339{
2822 clear_pending (EV_A_ (W)w); 3340 clear_pending (EV_A_ (W)w);
2823 if (expect_false (!ev_is_active (w))) 3341 if (expect_false (!ev_is_active (w)))
2824 return; 3342 return;
2825 3343
2834 3352
2835 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
2836} 3354}
2837 3355
2838void noinline 3356void noinline
2839ev_timer_start (EV_P_ ev_timer *w) 3357ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2840{ 3358{
2841 if (expect_false (ev_is_active (w))) 3359 if (expect_false (ev_is_active (w)))
2842 return; 3360 return;
2843 3361
2844 ev_at (w) += mn_now; 3362 ev_at (w) += mn_now;
2858 3376
2859 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3377 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2860} 3378}
2861 3379
2862void noinline 3380void noinline
2863ev_timer_stop (EV_P_ ev_timer *w) 3381ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2864{ 3382{
2865 clear_pending (EV_A_ (W)w); 3383 clear_pending (EV_A_ (W)w);
2866 if (expect_false (!ev_is_active (w))) 3384 if (expect_false (!ev_is_active (w)))
2867 return; 3385 return;
2868 3386
2888 3406
2889 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
2890} 3408}
2891 3409
2892void noinline 3410void noinline
2893ev_timer_again (EV_P_ ev_timer *w) 3411ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2894{ 3412{
2895 EV_FREQUENT_CHECK; 3413 EV_FREQUENT_CHECK;
3414
3415 clear_pending (EV_A_ (W)w);
2896 3416
2897 if (ev_is_active (w)) 3417 if (ev_is_active (w))
2898 { 3418 {
2899 if (w->repeat) 3419 if (w->repeat)
2900 { 3420 {
2913 3433
2914 EV_FREQUENT_CHECK; 3434 EV_FREQUENT_CHECK;
2915} 3435}
2916 3436
2917ev_tstamp 3437ev_tstamp
2918ev_timer_remaining (EV_P_ ev_timer *w) 3438ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2919{ 3439{
2920 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3440 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2921} 3441}
2922 3442
2923#if EV_PERIODIC_ENABLE 3443#if EV_PERIODIC_ENABLE
2924void noinline 3444void noinline
2925ev_periodic_start (EV_P_ ev_periodic *w) 3445ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2926{ 3446{
2927 if (expect_false (ev_is_active (w))) 3447 if (expect_false (ev_is_active (w)))
2928 return; 3448 return;
2929 3449
2930 if (w->reschedule_cb) 3450 if (w->reschedule_cb)
2950 3470
2951 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3471 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2952} 3472}
2953 3473
2954void noinline 3474void noinline
2955ev_periodic_stop (EV_P_ ev_periodic *w) 3475ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2956{ 3476{
2957 clear_pending (EV_A_ (W)w); 3477 clear_pending (EV_A_ (W)w);
2958 if (expect_false (!ev_is_active (w))) 3478 if (expect_false (!ev_is_active (w)))
2959 return; 3479 return;
2960 3480
2978 3498
2979 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2980} 3500}
2981 3501
2982void noinline 3502void noinline
2983ev_periodic_again (EV_P_ ev_periodic *w) 3503ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2984{ 3504{
2985 /* TODO: use adjustheap and recalculation */ 3505 /* TODO: use adjustheap and recalculation */
2986 ev_periodic_stop (EV_A_ w); 3506 ev_periodic_stop (EV_A_ w);
2987 ev_periodic_start (EV_A_ w); 3507 ev_periodic_start (EV_A_ w);
2988} 3508}
2993#endif 3513#endif
2994 3514
2995#if EV_SIGNAL_ENABLE 3515#if EV_SIGNAL_ENABLE
2996 3516
2997void noinline 3517void noinline
2998ev_signal_start (EV_P_ ev_signal *w) 3518ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2999{ 3519{
3000 if (expect_false (ev_is_active (w))) 3520 if (expect_false (ev_is_active (w)))
3001 return; 3521 return;
3002 3522
3003 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3523 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3074 3594
3075 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
3076} 3596}
3077 3597
3078void noinline 3598void noinline
3079ev_signal_stop (EV_P_ ev_signal *w) 3599ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3080{ 3600{
3081 clear_pending (EV_A_ (W)w); 3601 clear_pending (EV_A_ (W)w);
3082 if (expect_false (!ev_is_active (w))) 3602 if (expect_false (!ev_is_active (w)))
3083 return; 3603 return;
3084 3604
3115#endif 3635#endif
3116 3636
3117#if EV_CHILD_ENABLE 3637#if EV_CHILD_ENABLE
3118 3638
3119void 3639void
3120ev_child_start (EV_P_ ev_child *w) 3640ev_child_start (EV_P_ ev_child *w) EV_THROW
3121{ 3641{
3122#if EV_MULTIPLICITY 3642#if EV_MULTIPLICITY
3123 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3643 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3124#endif 3644#endif
3125 if (expect_false (ev_is_active (w))) 3645 if (expect_false (ev_is_active (w)))
3132 3652
3133 EV_FREQUENT_CHECK; 3653 EV_FREQUENT_CHECK;
3134} 3654}
3135 3655
3136void 3656void
3137ev_child_stop (EV_P_ ev_child *w) 3657ev_child_stop (EV_P_ ev_child *w) EV_THROW
3138{ 3658{
3139 clear_pending (EV_A_ (W)w); 3659 clear_pending (EV_A_ (W)w);
3140 if (expect_false (!ev_is_active (w))) 3660 if (expect_false (!ev_is_active (w)))
3141 return; 3661 return;
3142 3662
3309} 3829}
3310 3830
3311inline_size int 3831inline_size int
3312infy_newfd (void) 3832infy_newfd (void)
3313{ 3833{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3834#if defined IN_CLOEXEC && defined IN_NONBLOCK
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3835 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0) 3836 if (fd >= 0)
3317 return fd; 3837 return fd;
3318#endif 3838#endif
3319 return inotify_init (); 3839 return inotify_init ();
3394#else 3914#else
3395# define EV_LSTAT(p,b) lstat (p, b) 3915# define EV_LSTAT(p,b) lstat (p, b)
3396#endif 3916#endif
3397 3917
3398void 3918void
3399ev_stat_stat (EV_P_ ev_stat *w) 3919ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3400{ 3920{
3401 if (lstat (w->path, &w->attr) < 0) 3921 if (lstat (w->path, &w->attr) < 0)
3402 w->attr.st_nlink = 0; 3922 w->attr.st_nlink = 0;
3403 else if (!w->attr.st_nlink) 3923 else if (!w->attr.st_nlink)
3404 w->attr.st_nlink = 1; 3924 w->attr.st_nlink = 1;
3443 ev_feed_event (EV_A_ w, EV_STAT); 3963 ev_feed_event (EV_A_ w, EV_STAT);
3444 } 3964 }
3445} 3965}
3446 3966
3447void 3967void
3448ev_stat_start (EV_P_ ev_stat *w) 3968ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3449{ 3969{
3450 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3451 return; 3971 return;
3452 3972
3453 ev_stat_stat (EV_A_ w); 3973 ev_stat_stat (EV_A_ w);
3474 3994
3475 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3476} 3996}
3477 3997
3478void 3998void
3479ev_stat_stop (EV_P_ ev_stat *w) 3999ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3480{ 4000{
3481 clear_pending (EV_A_ (W)w); 4001 clear_pending (EV_A_ (W)w);
3482 if (expect_false (!ev_is_active (w))) 4002 if (expect_false (!ev_is_active (w)))
3483 return; 4003 return;
3484 4004
3500} 4020}
3501#endif 4021#endif
3502 4022
3503#if EV_IDLE_ENABLE 4023#if EV_IDLE_ENABLE
3504void 4024void
3505ev_idle_start (EV_P_ ev_idle *w) 4025ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3506{ 4026{
3507 if (expect_false (ev_is_active (w))) 4027 if (expect_false (ev_is_active (w)))
3508 return; 4028 return;
3509 4029
3510 pri_adjust (EV_A_ (W)w); 4030 pri_adjust (EV_A_ (W)w);
3523 4043
3524 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
3525} 4045}
3526 4046
3527void 4047void
3528ev_idle_stop (EV_P_ ev_idle *w) 4048ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3529{ 4049{
3530 clear_pending (EV_A_ (W)w); 4050 clear_pending (EV_A_ (W)w);
3531 if (expect_false (!ev_is_active (w))) 4051 if (expect_false (!ev_is_active (w)))
3532 return; 4052 return;
3533 4053
3547} 4067}
3548#endif 4068#endif
3549 4069
3550#if EV_PREPARE_ENABLE 4070#if EV_PREPARE_ENABLE
3551void 4071void
3552ev_prepare_start (EV_P_ ev_prepare *w) 4072ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3553{ 4073{
3554 if (expect_false (ev_is_active (w))) 4074 if (expect_false (ev_is_active (w)))
3555 return; 4075 return;
3556 4076
3557 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
3562 4082
3563 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
3564} 4084}
3565 4085
3566void 4086void
3567ev_prepare_stop (EV_P_ ev_prepare *w) 4087ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3568{ 4088{
3569 clear_pending (EV_A_ (W)w); 4089 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
3571 return; 4091 return;
3572 4092
3585} 4105}
3586#endif 4106#endif
3587 4107
3588#if EV_CHECK_ENABLE 4108#if EV_CHECK_ENABLE
3589void 4109void
3590ev_check_start (EV_P_ ev_check *w) 4110ev_check_start (EV_P_ ev_check *w) EV_THROW
3591{ 4111{
3592 if (expect_false (ev_is_active (w))) 4112 if (expect_false (ev_is_active (w)))
3593 return; 4113 return;
3594 4114
3595 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
3600 4120
3601 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
3602} 4122}
3603 4123
3604void 4124void
3605ev_check_stop (EV_P_ ev_check *w) 4125ev_check_stop (EV_P_ ev_check *w) EV_THROW
3606{ 4126{
3607 clear_pending (EV_A_ (W)w); 4127 clear_pending (EV_A_ (W)w);
3608 if (expect_false (!ev_is_active (w))) 4128 if (expect_false (!ev_is_active (w)))
3609 return; 4129 return;
3610 4130
3623} 4143}
3624#endif 4144#endif
3625 4145
3626#if EV_EMBED_ENABLE 4146#if EV_EMBED_ENABLE
3627void noinline 4147void noinline
3628ev_embed_sweep (EV_P_ ev_embed *w) 4148ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3629{ 4149{
3630 ev_run (w->other, EVRUN_NOWAIT); 4150 ev_run (w->other, EVRUN_NOWAIT);
3631} 4151}
3632 4152
3633static void 4153static void
3681 ev_idle_stop (EV_A_ idle); 4201 ev_idle_stop (EV_A_ idle);
3682} 4202}
3683#endif 4203#endif
3684 4204
3685void 4205void
3686ev_embed_start (EV_P_ ev_embed *w) 4206ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3687{ 4207{
3688 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
3689 return; 4209 return;
3690 4210
3691 { 4211 {
3712 4232
3713 EV_FREQUENT_CHECK; 4233 EV_FREQUENT_CHECK;
3714} 4234}
3715 4235
3716void 4236void
3717ev_embed_stop (EV_P_ ev_embed *w) 4237ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3718{ 4238{
3719 clear_pending (EV_A_ (W)w); 4239 clear_pending (EV_A_ (W)w);
3720 if (expect_false (!ev_is_active (w))) 4240 if (expect_false (!ev_is_active (w)))
3721 return; 4241 return;
3722 4242
3732} 4252}
3733#endif 4253#endif
3734 4254
3735#if EV_FORK_ENABLE 4255#if EV_FORK_ENABLE
3736void 4256void
3737ev_fork_start (EV_P_ ev_fork *w) 4257ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3738{ 4258{
3739 if (expect_false (ev_is_active (w))) 4259 if (expect_false (ev_is_active (w)))
3740 return; 4260 return;
3741 4261
3742 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
3747 4267
3748 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
3749} 4269}
3750 4270
3751void 4271void
3752ev_fork_stop (EV_P_ ev_fork *w) 4272ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3753{ 4273{
3754 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
3755 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
3756 return; 4276 return;
3757 4277
3770} 4290}
3771#endif 4291#endif
3772 4292
3773#if EV_CLEANUP_ENABLE 4293#if EV_CLEANUP_ENABLE
3774void 4294void
3775ev_cleanup_start (EV_P_ ev_cleanup *w) 4295ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3776{ 4296{
3777 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3778 return; 4298 return;
3779 4299
3780 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3787 ev_unref (EV_A); 4307 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK; 4308 EV_FREQUENT_CHECK;
3789} 4309}
3790 4310
3791void 4311void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w) 4312ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3793{ 4313{
3794 clear_pending (EV_A_ (W)w); 4314 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w))) 4315 if (expect_false (!ev_is_active (w)))
3796 return; 4316 return;
3797 4317
3811} 4331}
3812#endif 4332#endif
3813 4333
3814#if EV_ASYNC_ENABLE 4334#if EV_ASYNC_ENABLE
3815void 4335void
3816ev_async_start (EV_P_ ev_async *w) 4336ev_async_start (EV_P_ ev_async *w) EV_THROW
3817{ 4337{
3818 if (expect_false (ev_is_active (w))) 4338 if (expect_false (ev_is_active (w)))
3819 return; 4339 return;
3820 4340
3821 w->sent = 0; 4341 w->sent = 0;
3830 4350
3831 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3832} 4352}
3833 4353
3834void 4354void
3835ev_async_stop (EV_P_ ev_async *w) 4355ev_async_stop (EV_P_ ev_async *w) EV_THROW
3836{ 4356{
3837 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3838 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3839 return; 4359 return;
3840 4360
3851 4371
3852 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3853} 4373}
3854 4374
3855void 4375void
3856ev_async_send (EV_P_ ev_async *w) 4376ev_async_send (EV_P_ ev_async *w) EV_THROW
3857{ 4377{
3858 w->sent = 1; 4378 w->sent = 1;
3859 evpipe_write (EV_A_ &async_pending); 4379 evpipe_write (EV_A_ &async_pending);
3860} 4380}
3861#endif 4381#endif
3898 4418
3899 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4419 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3900} 4420}
3901 4421
3902void 4422void
3903ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4423ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3904{ 4424{
3905 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4425 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3906 4426
3907 if (expect_false (!once)) 4427 if (expect_false (!once))
3908 { 4428 {
3930 4450
3931/*****************************************************************************/ 4451/*****************************************************************************/
3932 4452
3933#if EV_WALK_ENABLE 4453#if EV_WALK_ENABLE
3934void ecb_cold 4454void ecb_cold
3935ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4455ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3936{ 4456{
3937 int i, j; 4457 int i, j;
3938 ev_watcher_list *wl, *wn; 4458 ev_watcher_list *wl, *wn;
3939 4459
3940 if (types & (EV_IO | EV_EMBED)) 4460 if (types & (EV_IO | EV_EMBED))
3983 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4503 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3984#endif 4504#endif
3985 4505
3986#if EV_IDLE_ENABLE 4506#if EV_IDLE_ENABLE
3987 if (types & EV_IDLE) 4507 if (types & EV_IDLE)
3988 for (j = NUMPRI; i--; ) 4508 for (j = NUMPRI; j--; )
3989 for (i = idlecnt [j]; i--; ) 4509 for (i = idlecnt [j]; i--; )
3990 cb (EV_A_ EV_IDLE, idles [j][i]); 4510 cb (EV_A_ EV_IDLE, idles [j][i]);
3991#endif 4511#endif
3992 4512
3993#if EV_FORK_ENABLE 4513#if EV_FORK_ENABLE
4046 4566
4047#if EV_MULTIPLICITY 4567#if EV_MULTIPLICITY
4048 #include "ev_wrap.h" 4568 #include "ev_wrap.h"
4049#endif 4569#endif
4050 4570
4051EV_CPP(})
4052

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