ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.373 by root, Sun Feb 20 02:56:23 2011 UTC vs.
Revision 1.449 by root, Sun Sep 23 21:21:58 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_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
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/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
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
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
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
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
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
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
480#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
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
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
482#define inline_size static inline 1013#define inline_size ecb_inline
483 1014
484#if EV_FEATURE_CODE 1015#if EV_FEATURE_CODE
485# define inline_speed static inline 1016# define inline_speed ecb_inline
486#else 1017#else
487# define inline_speed static noinline 1018# define inline_speed static noinline
488#endif 1019#endif
489 1020
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
581 1112
582#ifdef __linux 1113#ifdef __linux
583# include <sys/utsname.h> 1114# include <sys/utsname.h>
584#endif 1115#endif
585 1116
586static unsigned int noinline 1117static unsigned int noinline ecb_cold
587ev_linux_version (void) 1118ev_linux_version (void)
588{ 1119{
589#ifdef __linux 1120#ifdef __linux
590 unsigned int v = 0; 1121 unsigned int v = 0;
591 struct utsname buf; 1122 struct utsname buf;
… …
620} 1151}
621 1152
622/*****************************************************************************/ 1153/*****************************************************************************/
623 1154
624#if EV_AVOID_STDIO 1155#if EV_AVOID_STDIO
625static void noinline 1156static void noinline ecb_cold
626ev_printerr (const char *msg) 1157ev_printerr (const char *msg)
627{ 1158{
628 write (STDERR_FILENO, msg, strlen (msg)); 1159 write (STDERR_FILENO, msg, strlen (msg));
629} 1160}
630#endif 1161#endif
631 1162
632static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
633 1164
634void 1165void ecb_cold
635ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636{ 1167{
637 syserr_cb = cb; 1168 syserr_cb = cb;
638} 1169}
639 1170
640static void noinline 1171static void noinline ecb_cold
641ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
642{ 1173{
643 if (!msg) 1174 if (!msg)
644 msg = "(libev) system error"; 1175 msg = "(libev) system error";
645 1176
… …
658 abort (); 1189 abort ();
659 } 1190 }
660} 1191}
661 1192
662static void * 1193static void *
663ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
664{ 1195{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
668 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
669 * implement realloc (x, 0) (as required by both ansi c-89 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
670 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
1199 * recently, also (at least) fedora and debian started breaking it,
1200 * despite documenting it otherwise.
671 */ 1201 */
672 1202
673 if (size) 1203 if (size)
674 return realloc (ptr, size); 1204 return realloc (ptr, size);
675 1205
676 free (ptr); 1206 free (ptr);
677 return 0; 1207 return 0;
678#endif
679} 1208}
680 1209
681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682 1211
683void 1212void ecb_cold
684ev_set_allocator (void *(*cb)(void *ptr, long size)) 1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685{ 1214{
686 alloc = cb; 1215 alloc = cb;
687} 1216}
688 1217
689inline_speed void * 1218inline_speed void *
… …
777 #undef VAR 1306 #undef VAR
778 }; 1307 };
779 #include "ev_wrap.h" 1308 #include "ev_wrap.h"
780 1309
781 static struct ev_loop default_loop_struct; 1310 static struct ev_loop default_loop_struct;
782 struct ev_loop *ev_default_loop_ptr; 1311 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
783 1312
784#else 1313#else
785 1314
786 ev_tstamp ev_rt_now; 1315 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; 1316 #define VAR(name,decl) static decl;
788 #include "ev_vars.h" 1317 #include "ev_vars.h"
789 #undef VAR 1318 #undef VAR
790 1319
791 static int ev_default_loop_ptr; 1320 static int ev_default_loop_ptr;
… …
806 1335
807/*****************************************************************************/ 1336/*****************************************************************************/
808 1337
809#ifndef EV_HAVE_EV_TIME 1338#ifndef EV_HAVE_EV_TIME
810ev_tstamp 1339ev_tstamp
811ev_time (void) 1340ev_time (void) EV_THROW
812{ 1341{
813#if EV_USE_REALTIME 1342#if EV_USE_REALTIME
814 if (expect_true (have_realtime)) 1343 if (expect_true (have_realtime))
815 { 1344 {
816 struct timespec ts; 1345 struct timespec ts;
… …
840 return ev_time (); 1369 return ev_time ();
841} 1370}
842 1371
843#if EV_MULTIPLICITY 1372#if EV_MULTIPLICITY
844ev_tstamp 1373ev_tstamp
845ev_now (EV_P) 1374ev_now (EV_P) EV_THROW
846{ 1375{
847 return ev_rt_now; 1376 return ev_rt_now;
848} 1377}
849#endif 1378#endif
850 1379
851void 1380void
852ev_sleep (ev_tstamp delay) 1381ev_sleep (ev_tstamp delay) EV_THROW
853{ 1382{
854 if (delay > 0.) 1383 if (delay > 0.)
855 { 1384 {
856#if EV_USE_NANOSLEEP 1385#if EV_USE_NANOSLEEP
857 struct timespec ts; 1386 struct timespec ts;
858 1387
859 EV_TS_SET (ts, delay); 1388 EV_TS_SET (ts, delay);
860 nanosleep (&ts, 0); 1389 nanosleep (&ts, 0);
861#elif defined(_WIN32) 1390#elif defined _WIN32
862 Sleep ((unsigned long)(delay * 1e3)); 1391 Sleep ((unsigned long)(delay * 1e3));
863#else 1392#else
864 struct timeval tv; 1393 struct timeval tv;
865 1394
866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
870 select (0, 0, 0, 0, &tv); 1399 select (0, 0, 0, 0, &tv);
871#endif 1400#endif
872 } 1401 }
873} 1402}
874 1403
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
883/*****************************************************************************/ 1404/*****************************************************************************/
884 1405
885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1406#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886 1407
887/* find a suitable new size for the given array, */ 1408/* find a suitable new size for the given array, */
… …
893 1414
894 do 1415 do
895 ncur <<= 1; 1416 ncur <<= 1;
896 while (cnt > ncur); 1417 while (cnt > ncur);
897 1418
898 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1419 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
899 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1420 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
900 { 1421 {
901 ncur *= elem; 1422 ncur *= elem;
902 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1423 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
903 ncur = ncur - sizeof (void *) * 4; 1424 ncur = ncur - sizeof (void *) * 4;
… …
905 } 1426 }
906 1427
907 return ncur; 1428 return ncur;
908} 1429}
909 1430
910static noinline void * 1431static void * noinline ecb_cold
911array_realloc (int elem, void *base, int *cur, int cnt) 1432array_realloc (int elem, void *base, int *cur, int cnt)
912{ 1433{
913 *cur = array_nextsize (elem, *cur, cnt); 1434 *cur = array_nextsize (elem, *cur, cnt);
914 return ev_realloc (base, elem * *cur); 1435 return ev_realloc (base, elem * *cur);
915} 1436}
… …
918 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1439 memset ((void *)(base), 0, sizeof (*(base)) * (count))
919 1440
920#define array_needsize(type,base,cur,cnt,init) \ 1441#define array_needsize(type,base,cur,cnt,init) \
921 if (expect_false ((cnt) > (cur))) \ 1442 if (expect_false ((cnt) > (cur))) \
922 { \ 1443 { \
923 int ocur_ = (cur); \ 1444 int ecb_unused ocur_ = (cur); \
924 (base) = (type *)array_realloc \ 1445 (base) = (type *)array_realloc \
925 (sizeof (type), (base), &(cur), (cnt)); \ 1446 (sizeof (type), (base), &(cur), (cnt)); \
926 init ((base) + (ocur_), (cur) - ocur_); \ 1447 init ((base) + (ocur_), (cur) - ocur_); \
927 } 1448 }
928 1449
… …
946pendingcb (EV_P_ ev_prepare *w, int revents) 1467pendingcb (EV_P_ ev_prepare *w, int revents)
947{ 1468{
948} 1469}
949 1470
950void noinline 1471void noinline
951ev_feed_event (EV_P_ void *w, int revents) 1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW
952{ 1473{
953 W w_ = (W)w; 1474 W w_ = (W)w;
954 int pri = ABSPRI (w_); 1475 int pri = ABSPRI (w_);
955 1476
956 if (expect_false (w_->pending)) 1477 if (expect_false (w_->pending))
… …
960 w_->pending = ++pendingcnt [pri]; 1481 w_->pending = ++pendingcnt [pri];
961 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
962 pendings [pri][w_->pending - 1].w = w_; 1483 pendings [pri][w_->pending - 1].w = w_;
963 pendings [pri][w_->pending - 1].events = revents; 1484 pendings [pri][w_->pending - 1].events = revents;
964 } 1485 }
1486
1487 pendingpri = NUMPRI - 1;
965} 1488}
966 1489
967inline_speed void 1490inline_speed void
968feed_reverse (EV_P_ W w) 1491feed_reverse (EV_P_ W w)
969{ 1492{
… …
1015 if (expect_true (!anfd->reify)) 1538 if (expect_true (!anfd->reify))
1016 fd_event_nocheck (EV_A_ fd, revents); 1539 fd_event_nocheck (EV_A_ fd, revents);
1017} 1540}
1018 1541
1019void 1542void
1020ev_feed_fd_event (EV_P_ int fd, int revents) 1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1021{ 1544{
1022 if (fd >= 0 && fd < anfdmax) 1545 if (fd >= 0 && fd < anfdmax)
1023 fd_event_nocheck (EV_A_ fd, revents); 1546 fd_event_nocheck (EV_A_ fd, revents);
1024} 1547}
1025 1548
… …
1034 for (i = 0; i < fdchangecnt; ++i) 1557 for (i = 0; i < fdchangecnt; ++i)
1035 { 1558 {
1036 int fd = fdchanges [i]; 1559 int fd = fdchanges [i];
1037 ANFD *anfd = anfds + fd; 1560 ANFD *anfd = anfds + fd;
1038 1561
1039 if (anfd->reify & EV__IOFDSET) 1562 if (anfd->reify & EV__IOFDSET && anfd->head)
1040 { 1563 {
1041 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 1564 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1042 1565
1043 if (handle != anfd->handle) 1566 if (handle != anfd->handle)
1044 { 1567 {
… …
1098 fdchanges [fdchangecnt - 1] = fd; 1621 fdchanges [fdchangecnt - 1] = fd;
1099 } 1622 }
1100} 1623}
1101 1624
1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void 1626inline_speed void ecb_cold
1104fd_kill (EV_P_ int fd) 1627fd_kill (EV_P_ int fd)
1105{ 1628{
1106 ev_io *w; 1629 ev_io *w;
1107 1630
1108 while ((w = (ev_io *)anfds [fd].head)) 1631 while ((w = (ev_io *)anfds [fd].head))
… …
1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1112 } 1635 }
1113} 1636}
1114 1637
1115/* check whether the given fd is actually valid, for error recovery */ 1638/* check whether the given fd is actually valid, for error recovery */
1116inline_size int 1639inline_size int ecb_cold
1117fd_valid (int fd) 1640fd_valid (int fd)
1118{ 1641{
1119#ifdef _WIN32 1642#ifdef _WIN32
1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121#else 1644#else
1122 return fcntl (fd, F_GETFD) != -1; 1645 return fcntl (fd, F_GETFD) != -1;
1123#endif 1646#endif
1124} 1647}
1125 1648
1126/* called on EBADF to verify fds */ 1649/* called on EBADF to verify fds */
1127static void noinline 1650static void noinline ecb_cold
1128fd_ebadf (EV_P) 1651fd_ebadf (EV_P)
1129{ 1652{
1130 int fd; 1653 int fd;
1131 1654
1132 for (fd = 0; fd < anfdmax; ++fd) 1655 for (fd = 0; fd < anfdmax; ++fd)
… …
1134 if (!fd_valid (fd) && errno == EBADF) 1657 if (!fd_valid (fd) && errno == EBADF)
1135 fd_kill (EV_A_ fd); 1658 fd_kill (EV_A_ fd);
1136} 1659}
1137 1660
1138/* called on ENOMEM in select/poll to kill some fds and retry */ 1661/* called on ENOMEM in select/poll to kill some fds and retry */
1139static void noinline 1662static void noinline ecb_cold
1140fd_enomem (EV_P) 1663fd_enomem (EV_P)
1141{ 1664{
1142 int fd; 1665 int fd;
1143 1666
1144 for (fd = anfdmax; fd--; ) 1667 for (fd = anfdmax; fd--; )
… …
1339 1862
1340/*****************************************************************************/ 1863/*****************************************************************************/
1341 1864
1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 1866
1344static void noinline 1867static void noinline ecb_cold
1345evpipe_init (EV_P) 1868evpipe_init (EV_P)
1346{ 1869{
1347 if (!ev_is_active (&pipe_w)) 1870 if (!ev_is_active (&pipe_w))
1348 { 1871 {
1872 int fds [2];
1873
1349# if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1875 fds [0] = -1;
1350 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1876 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351 if (evfd < 0 && errno == EINVAL) 1877 if (fds [1] < 0 && errno == EINVAL)
1352 evfd = eventfd (0, 0); 1878 fds [1] = eventfd (0, 0);
1353 1879
1354 if (evfd >= 0) 1880 if (fds [1] < 0)
1881# endif
1355 { 1882 {
1883 while (pipe (fds))
1884 ev_syserr ("(libev) error creating signal/async pipe");
1885
1886 fd_intern (fds [0]);
1887 }
1888
1889 fd_intern (fds [1]);
1890
1356 evpipe [0] = -1; 1891 evpipe [0] = fds [0];
1357 fd_intern (evfd); /* doing it twice doesn't hurt */ 1892
1358 ev_io_set (&pipe_w, evfd, EV_READ); 1893 if (evpipe [1] < 0)
1894 evpipe [1] = fds [1]; /* first call, set write fd */
1895 else
1896 {
1897 /* on subsequent calls, do not change evpipe [1] */
1898 /* so that evpipe_write can always rely on its value. */
1899 /* this branch does not do anything sensible on windows, */
1900 /* so must not be executed on windows */
1901
1902 dup2 (fds [1], evpipe [1]);
1903 close (fds [1]);
1904 }
1905
1906 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1907 ev_io_start (EV_A_ &pipe_w);
1908 ev_unref (EV_A); /* watcher should not keep loop alive */
1909 }
1910}
1911
1912inline_speed void
1913evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1914{
1915 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1916
1917 if (expect_true (*flag))
1918 return;
1919
1920 *flag = 1;
1921 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1922
1923 pipe_write_skipped = 1;
1924
1925 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1926
1927 if (pipe_write_wanted)
1928 {
1929 int old_errno;
1930
1931 pipe_write_skipped = 0;
1932 ECB_MEMORY_FENCE_RELEASE;
1933
1934 old_errno = errno; /* save errno because write will clobber it */
1935
1936#if EV_USE_EVENTFD
1937 if (evpipe [0] < 0)
1938 {
1939 uint64_t counter = 1;
1940 write (evpipe [1], &counter, sizeof (uint64_t));
1359 } 1941 }
1360 else 1942 else
1361# endif 1943#endif
1362 { 1944 {
1363 while (pipe (evpipe)) 1945#ifdef _WIN32
1364 ev_syserr ("(libev) error creating signal/async pipe"); 1946 WSABUF buf;
1365 1947 DWORD sent;
1366 fd_intern (evpipe [0]); 1948 buf.buf = &buf;
1367 fd_intern (evpipe [1]); 1949 buf.len = 1;
1368 ev_io_set (&pipe_w, evpipe [0], EV_READ); 1950 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1951#else
1952 write (evpipe [1], &(evpipe [1]), 1);
1953#endif
1369 } 1954 }
1370
1371 ev_io_start (EV_A_ &pipe_w);
1372 ev_unref (EV_A); /* watcher should not keep loop alive */
1373 }
1374}
1375
1376inline_size void
1377evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1378{
1379 if (!*flag)
1380 {
1381 int old_errno = errno; /* save errno because write might clobber it */
1382 char dummy;
1383
1384 *flag = 1;
1385
1386#if EV_USE_EVENTFD
1387 if (evfd >= 0)
1388 {
1389 uint64_t counter = 1;
1390 write (evfd, &counter, sizeof (uint64_t));
1391 }
1392 else
1393#endif
1394 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */
1399 write (evpipe [1], &dummy, 1);
1400 1955
1401 errno = old_errno; 1956 errno = old_errno;
1402 } 1957 }
1403} 1958}
1404 1959
… …
1407static void 1962static void
1408pipecb (EV_P_ ev_io *iow, int revents) 1963pipecb (EV_P_ ev_io *iow, int revents)
1409{ 1964{
1410 int i; 1965 int i;
1411 1966
1967 if (revents & EV_READ)
1968 {
1412#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1413 if (evfd >= 0) 1970 if (evpipe [0] < 0)
1414 { 1971 {
1415 uint64_t counter; 1972 uint64_t counter;
1416 read (evfd, &counter, sizeof (uint64_t)); 1973 read (evpipe [1], &counter, sizeof (uint64_t));
1417 } 1974 }
1418 else 1975 else
1419#endif 1976#endif
1420 { 1977 {
1421 char dummy; 1978 char dummy[4];
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1979#ifdef _WIN32
1980 WSABUF buf;
1981 DWORD recvd;
1982 DWORD flags = 0;
1983 buf.buf = dummy;
1984 buf.len = sizeof (dummy);
1985 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1986#else
1423 read (evpipe [0], &dummy, 1); 1987 read (evpipe [0], &dummy, sizeof (dummy));
1988#endif
1989 }
1424 } 1990 }
1991
1992 pipe_write_skipped = 0;
1993
1994 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1425 1995
1426#if EV_SIGNAL_ENABLE 1996#if EV_SIGNAL_ENABLE
1427 if (sig_pending) 1997 if (sig_pending)
1428 { 1998 {
1429 sig_pending = 0; 1999 sig_pending = 0;
2000
2001 ECB_MEMORY_FENCE;
1430 2002
1431 for (i = EV_NSIG - 1; i--; ) 2003 for (i = EV_NSIG - 1; i--; )
1432 if (expect_false (signals [i].pending)) 2004 if (expect_false (signals [i].pending))
1433 ev_feed_signal_event (EV_A_ i + 1); 2005 ev_feed_signal_event (EV_A_ i + 1);
1434 } 2006 }
… …
1436 2008
1437#if EV_ASYNC_ENABLE 2009#if EV_ASYNC_ENABLE
1438 if (async_pending) 2010 if (async_pending)
1439 { 2011 {
1440 async_pending = 0; 2012 async_pending = 0;
2013
2014 ECB_MEMORY_FENCE;
1441 2015
1442 for (i = asynccnt; i--; ) 2016 for (i = asynccnt; i--; )
1443 if (asyncs [i]->sent) 2017 if (asyncs [i]->sent)
1444 { 2018 {
1445 asyncs [i]->sent = 0; 2019 asyncs [i]->sent = 0;
2020 ECB_MEMORY_FENCE_RELEASE;
1446 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2021 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1447 } 2022 }
1448 } 2023 }
1449#endif 2024#endif
1450} 2025}
1451 2026
1452/*****************************************************************************/ 2027/*****************************************************************************/
1453 2028
1454void 2029void
1455ev_feed_signal (int signum) 2030ev_feed_signal (int signum) EV_THROW
1456{ 2031{
1457#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
2033 ECB_MEMORY_FENCE_ACQUIRE;
1458 EV_P = signals [signum - 1].loop; 2034 EV_P = signals [signum - 1].loop;
1459 2035
1460 if (!EV_A) 2036 if (!EV_A)
1461 return; 2037 return;
1462#endif 2038#endif
… …
1474 2050
1475 ev_feed_signal (signum); 2051 ev_feed_signal (signum);
1476} 2052}
1477 2053
1478void noinline 2054void noinline
1479ev_feed_signal_event (EV_P_ int signum) 2055ev_feed_signal_event (EV_P_ int signum) EV_THROW
1480{ 2056{
1481 WL w; 2057 WL w;
1482 2058
1483 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2059 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1484 return; 2060 return;
1485 2061
1486 --signum; 2062 --signum;
1487 2063
1488#if EV_MULTIPLICITY 2064#if EV_MULTIPLICITY
… …
1492 if (expect_false (signals [signum].loop != EV_A)) 2068 if (expect_false (signals [signum].loop != EV_A))
1493 return; 2069 return;
1494#endif 2070#endif
1495 2071
1496 signals [signum].pending = 0; 2072 signals [signum].pending = 0;
2073 ECB_MEMORY_FENCE_RELEASE;
1497 2074
1498 for (w = signals [signum].head; w; w = w->next) 2075 for (w = signals [signum].head; w; w = w->next)
1499 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2076 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1500} 2077}
1501 2078
… …
1599#endif 2176#endif
1600#if EV_USE_SELECT 2177#if EV_USE_SELECT
1601# include "ev_select.c" 2178# include "ev_select.c"
1602#endif 2179#endif
1603 2180
1604int 2181int ecb_cold
1605ev_version_major (void) 2182ev_version_major (void) EV_THROW
1606{ 2183{
1607 return EV_VERSION_MAJOR; 2184 return EV_VERSION_MAJOR;
1608} 2185}
1609 2186
1610int 2187int ecb_cold
1611ev_version_minor (void) 2188ev_version_minor (void) EV_THROW
1612{ 2189{
1613 return EV_VERSION_MINOR; 2190 return EV_VERSION_MINOR;
1614} 2191}
1615 2192
1616/* return true if we are running with elevated privileges and should ignore env variables */ 2193/* return true if we are running with elevated privileges and should ignore env variables */
1617int inline_size 2194int inline_size ecb_cold
1618enable_secure (void) 2195enable_secure (void)
1619{ 2196{
1620#ifdef _WIN32 2197#ifdef _WIN32
1621 return 0; 2198 return 0;
1622#else 2199#else
1623 return getuid () != geteuid () 2200 return getuid () != geteuid ()
1624 || getgid () != getegid (); 2201 || getgid () != getegid ();
1625#endif 2202#endif
1626} 2203}
1627 2204
1628unsigned int 2205unsigned int ecb_cold
1629ev_supported_backends (void) 2206ev_supported_backends (void) EV_THROW
1630{ 2207{
1631 unsigned int flags = 0; 2208 unsigned int flags = 0;
1632 2209
1633 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2210 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1634 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2211 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1637 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2214 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638 2215
1639 return flags; 2216 return flags;
1640} 2217}
1641 2218
1642unsigned int 2219unsigned int ecb_cold
1643ev_recommended_backends (void) 2220ev_recommended_backends (void) EV_THROW
1644{ 2221{
1645 unsigned int flags = ev_supported_backends (); 2222 unsigned int flags = ev_supported_backends ();
1646 2223
1647#ifndef __NetBSD__ 2224#ifndef __NetBSD__
1648 /* kqueue is borked on everything but netbsd apparently */ 2225 /* kqueue is borked on everything but netbsd apparently */
… …
1659#endif 2236#endif
1660 2237
1661 return flags; 2238 return flags;
1662} 2239}
1663 2240
1664unsigned int 2241unsigned int ecb_cold
1665ev_embeddable_backends (void) 2242ev_embeddable_backends (void) EV_THROW
1666{ 2243{
1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2244 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668 2245
1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2246 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1670 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2247 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1672 2249
1673 return flags; 2250 return flags;
1674} 2251}
1675 2252
1676unsigned int 2253unsigned int
1677ev_backend (EV_P) 2254ev_backend (EV_P) EV_THROW
1678{ 2255{
1679 return backend; 2256 return backend;
1680} 2257}
1681 2258
1682#if EV_FEATURE_API 2259#if EV_FEATURE_API
1683unsigned int 2260unsigned int
1684ev_iteration (EV_P) 2261ev_iteration (EV_P) EV_THROW
1685{ 2262{
1686 return loop_count; 2263 return loop_count;
1687} 2264}
1688 2265
1689unsigned int 2266unsigned int
1690ev_depth (EV_P) 2267ev_depth (EV_P) EV_THROW
1691{ 2268{
1692 return loop_depth; 2269 return loop_depth;
1693} 2270}
1694 2271
1695void 2272void
1696ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1697{ 2274{
1698 io_blocktime = interval; 2275 io_blocktime = interval;
1699} 2276}
1700 2277
1701void 2278void
1702ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1703{ 2280{
1704 timeout_blocktime = interval; 2281 timeout_blocktime = interval;
1705} 2282}
1706 2283
1707void 2284void
1708ev_set_userdata (EV_P_ void *data) 2285ev_set_userdata (EV_P_ void *data) EV_THROW
1709{ 2286{
1710 userdata = data; 2287 userdata = data;
1711} 2288}
1712 2289
1713void * 2290void *
1714ev_userdata (EV_P) 2291ev_userdata (EV_P) EV_THROW
1715{ 2292{
1716 return userdata; 2293 return userdata;
1717} 2294}
1718 2295
2296void
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2297ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1720{ 2298{
1721 invoke_cb = invoke_pending_cb; 2299 invoke_cb = invoke_pending_cb;
1722} 2300}
1723 2301
2302void
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2303ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1725{ 2304{
1726 release_cb = release; 2305 release_cb = release;
1727 acquire_cb = acquire; 2306 acquire_cb = acquire;
1728} 2307}
1729#endif 2308#endif
1730 2309
1731/* initialise a loop structure, must be zero-initialised */ 2310/* initialise a loop structure, must be zero-initialised */
1732static void noinline 2311static void noinline ecb_cold
1733loop_init (EV_P_ unsigned int flags) 2312loop_init (EV_P_ unsigned int flags) EV_THROW
1734{ 2313{
1735 if (!backend) 2314 if (!backend)
1736 { 2315 {
1737 origflags = flags; 2316 origflags = flags;
1738 2317
… …
1765 if (!(flags & EVFLAG_NOENV) 2344 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure () 2345 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS")) 2346 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS")); 2347 flags = atoi (getenv ("LIBEV_FLAGS"));
1769 2348
1770 ev_rt_now = ev_time (); 2349 ev_rt_now = ev_time ();
1771 mn_now = get_clock (); 2350 mn_now = get_clock ();
1772 now_floor = mn_now; 2351 now_floor = mn_now;
1773 rtmn_diff = ev_rt_now - mn_now; 2352 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API 2353#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending; 2354 invoke_cb = ev_invoke_pending;
1776#endif 2355#endif
1777 2356
1778 io_blocktime = 0.; 2357 io_blocktime = 0.;
1779 timeout_blocktime = 0.; 2358 timeout_blocktime = 0.;
1780 backend = 0; 2359 backend = 0;
1781 backend_fd = -1; 2360 backend_fd = -1;
1782 sig_pending = 0; 2361 sig_pending = 0;
1783#if EV_ASYNC_ENABLE 2362#if EV_ASYNC_ENABLE
1784 async_pending = 0; 2363 async_pending = 0;
1785#endif 2364#endif
2365 pipe_write_skipped = 0;
2366 pipe_write_wanted = 0;
2367 evpipe [0] = -1;
2368 evpipe [1] = -1;
1786#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2370 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788#endif 2371#endif
1789#if EV_USE_SIGNALFD 2372#if EV_USE_SIGNALFD
1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2373 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791#endif 2374#endif
1792 2375
1793 if (!(flags & EVBACKEND_MASK)) 2376 if (!(flags & EVBACKEND_MASK))
1794 flags |= ev_recommended_backends (); 2377 flags |= ev_recommended_backends ();
1795 2378
… …
1820#endif 2403#endif
1821 } 2404 }
1822} 2405}
1823 2406
1824/* free up a loop structure */ 2407/* free up a loop structure */
1825void 2408void ecb_cold
1826ev_loop_destroy (EV_P) 2409ev_loop_destroy (EV_P)
1827{ 2410{
1828 int i; 2411 int i;
1829 2412
1830#if EV_MULTIPLICITY 2413#if EV_MULTIPLICITY
… …
1841 EV_INVOKE_PENDING; 2424 EV_INVOKE_PENDING;
1842 } 2425 }
1843#endif 2426#endif
1844 2427
1845#if EV_CHILD_ENABLE 2428#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev)) 2429 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1847 { 2430 {
1848 ev_ref (EV_A); /* child watcher */ 2431 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev); 2432 ev_signal_stop (EV_A_ &childev);
1850 } 2433 }
1851#endif 2434#endif
… …
1853 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1854 { 2437 {
1855 /*ev_ref (EV_A);*/ 2438 /*ev_ref (EV_A);*/
1856 /*ev_io_stop (EV_A_ &pipe_w);*/ 2439 /*ev_io_stop (EV_A_ &pipe_w);*/
1857 2440
1858#if EV_USE_EVENTFD
1859 if (evfd >= 0)
1860 close (evfd);
1861#endif
1862
1863 if (evpipe [0] >= 0)
1864 {
1865 EV_WIN32_CLOSE_FD (evpipe [0]); 2441 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1866 EV_WIN32_CLOSE_FD (evpipe [1]); 2442 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1867 }
1868 } 2443 }
1869 2444
1870#if EV_USE_SIGNALFD 2445#if EV_USE_SIGNALFD
1871 if (ev_is_active (&sigfd_w)) 2446 if (ev_is_active (&sigfd_w))
1872 close (sigfd); 2447 close (sigfd);
… …
1958#endif 2533#endif
1959#if EV_USE_INOTIFY 2534#if EV_USE_INOTIFY
1960 infy_fork (EV_A); 2535 infy_fork (EV_A);
1961#endif 2536#endif
1962 2537
2538#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1963 if (ev_is_active (&pipe_w)) 2539 if (ev_is_active (&pipe_w))
1964 { 2540 {
1965 /* this "locks" the handlers against writing to the pipe */ 2541 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1966 /* while we modify the fd vars */
1967 sig_pending = 1;
1968#if EV_ASYNC_ENABLE
1969 async_pending = 1;
1970#endif
1971 2542
1972 ev_ref (EV_A); 2543 ev_ref (EV_A);
1973 ev_io_stop (EV_A_ &pipe_w); 2544 ev_io_stop (EV_A_ &pipe_w);
1974 2545
1975#if EV_USE_EVENTFD
1976 if (evfd >= 0)
1977 close (evfd);
1978#endif
1979
1980 if (evpipe [0] >= 0) 2546 if (evpipe [0] >= 0)
1981 {
1982 EV_WIN32_CLOSE_FD (evpipe [0]); 2547 EV_WIN32_CLOSE_FD (evpipe [0]);
1983 EV_WIN32_CLOSE_FD (evpipe [1]);
1984 }
1985 2548
1986#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1987 evpipe_init (EV_A); 2549 evpipe_init (EV_A);
1988 /* now iterate over everything, in case we missed something */ 2550 /* iterate over everything, in case we missed something before */
1989 pipecb (EV_A_ &pipe_w, EV_READ); 2551 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1990#endif
1991 } 2552 }
2553#endif
1992 2554
1993 postfork = 0; 2555 postfork = 0;
1994} 2556}
1995 2557
1996#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1997 2559
1998struct ev_loop * 2560struct ev_loop * ecb_cold
1999ev_loop_new (unsigned int flags) 2561ev_loop_new (unsigned int flags) EV_THROW
2000{ 2562{
2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2563 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002 2564
2003 memset (EV_A, 0, sizeof (struct ev_loop)); 2565 memset (EV_A, 0, sizeof (struct ev_loop));
2004 loop_init (EV_A_ flags); 2566 loop_init (EV_A_ flags);
… …
2011} 2573}
2012 2574
2013#endif /* multiplicity */ 2575#endif /* multiplicity */
2014 2576
2015#if EV_VERIFY 2577#if EV_VERIFY
2016static void noinline 2578static void noinline ecb_cold
2017verify_watcher (EV_P_ W w) 2579verify_watcher (EV_P_ W w)
2018{ 2580{
2019 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2581 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020 2582
2021 if (w->pending) 2583 if (w->pending)
2022 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2584 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023} 2585}
2024 2586
2025static void noinline 2587static void noinline ecb_cold
2026verify_heap (EV_P_ ANHE *heap, int N) 2588verify_heap (EV_P_ ANHE *heap, int N)
2027{ 2589{
2028 int i; 2590 int i;
2029 2591
2030 for (i = HEAP0; i < N + HEAP0; ++i) 2592 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2035 2597
2036 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2598 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037 } 2599 }
2038} 2600}
2039 2601
2040static void noinline 2602static void noinline ecb_cold
2041array_verify (EV_P_ W *ws, int cnt) 2603array_verify (EV_P_ W *ws, int cnt)
2042{ 2604{
2043 while (cnt--) 2605 while (cnt--)
2044 { 2606 {
2045 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2607 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2047 } 2609 }
2048} 2610}
2049#endif 2611#endif
2050 2612
2051#if EV_FEATURE_API 2613#if EV_FEATURE_API
2052void 2614void ecb_cold
2053ev_verify (EV_P) 2615ev_verify (EV_P) EV_THROW
2054{ 2616{
2055#if EV_VERIFY 2617#if EV_VERIFY
2056 int i; 2618 int i;
2057 WL w; 2619 WL w, w2;
2058 2620
2059 assert (activecnt >= -1); 2621 assert (activecnt >= -1);
2060 2622
2061 assert (fdchangemax >= fdchangecnt); 2623 assert (fdchangemax >= fdchangecnt);
2062 for (i = 0; i < fdchangecnt; ++i) 2624 for (i = 0; i < fdchangecnt; ++i)
2063 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2625 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064 2626
2065 assert (anfdmax >= 0); 2627 assert (anfdmax >= 0);
2066 for (i = 0; i < anfdmax; ++i) 2628 for (i = 0; i < anfdmax; ++i)
2629 {
2630 int j = 0;
2631
2067 for (w = anfds [i].head; w; w = w->next) 2632 for (w = w2 = anfds [i].head; w; w = w->next)
2068 { 2633 {
2069 verify_watcher (EV_A_ (W)w); 2634 verify_watcher (EV_A_ (W)w);
2635
2636 if (j++ & 1)
2637 {
2638 assert (("libev: io watcher list contains a loop", w != w2));
2639 w2 = w2->next;
2640 }
2641
2070 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2642 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2071 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2643 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2072 } 2644 }
2645 }
2073 2646
2074 assert (timermax >= timercnt); 2647 assert (timermax >= timercnt);
2075 verify_heap (EV_A_ timers, timercnt); 2648 verify_heap (EV_A_ timers, timercnt);
2076 2649
2077#if EV_PERIODIC_ENABLE 2650#if EV_PERIODIC_ENABLE
… …
2123#endif 2696#endif
2124} 2697}
2125#endif 2698#endif
2126 2699
2127#if EV_MULTIPLICITY 2700#if EV_MULTIPLICITY
2128struct ev_loop * 2701struct ev_loop * ecb_cold
2129#else 2702#else
2130int 2703int
2131#endif 2704#endif
2132ev_default_loop (unsigned int flags) 2705ev_default_loop (unsigned int flags) EV_THROW
2133{ 2706{
2134 if (!ev_default_loop_ptr) 2707 if (!ev_default_loop_ptr)
2135 { 2708 {
2136#if EV_MULTIPLICITY 2709#if EV_MULTIPLICITY
2137 EV_P = ev_default_loop_ptr = &default_loop_struct; 2710 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2156 2729
2157 return ev_default_loop_ptr; 2730 return ev_default_loop_ptr;
2158} 2731}
2159 2732
2160void 2733void
2161ev_loop_fork (EV_P) 2734ev_loop_fork (EV_P) EV_THROW
2162{ 2735{
2163 postfork = 1; /* must be in line with ev_default_fork */ 2736 postfork = 1;
2164} 2737}
2165 2738
2166/*****************************************************************************/ 2739/*****************************************************************************/
2167 2740
2168void 2741void
… …
2170{ 2743{
2171 EV_CB_INVOKE ((W)w, revents); 2744 EV_CB_INVOKE ((W)w, revents);
2172} 2745}
2173 2746
2174unsigned int 2747unsigned int
2175ev_pending_count (EV_P) 2748ev_pending_count (EV_P) EV_THROW
2176{ 2749{
2177 int pri; 2750 int pri;
2178 unsigned int count = 0; 2751 unsigned int count = 0;
2179 2752
2180 for (pri = NUMPRI; pri--; ) 2753 for (pri = NUMPRI; pri--; )
… …
2184} 2757}
2185 2758
2186void noinline 2759void noinline
2187ev_invoke_pending (EV_P) 2760ev_invoke_pending (EV_P)
2188{ 2761{
2189 int pri; 2762 pendingpri = NUMPRI;
2190 2763
2191 for (pri = NUMPRI; pri--; ) 2764 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2765 {
2766 --pendingpri;
2767
2192 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
2193 { 2769 {
2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2195 2771
2196 p->w->pending = 0; 2772 p->w->pending = 0;
2197 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2198 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2199 } 2775 }
2776 }
2200} 2777}
2201 2778
2202#if EV_IDLE_ENABLE 2779#if EV_IDLE_ENABLE
2203/* make idle watchers pending. this handles the "call-idle */ 2780/* make idle watchers pending. this handles the "call-idle */
2204/* only when higher priorities are idle" logic */ 2781/* only when higher priorities are idle" logic */
… …
2294{ 2871{
2295 EV_FREQUENT_CHECK; 2872 EV_FREQUENT_CHECK;
2296 2873
2297 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2298 { 2875 {
2299 int feed_count = 0;
2300
2301 do 2876 do
2302 { 2877 {
2303 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2878 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304 2879
2305 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2880 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2332 } 2907 }
2333} 2908}
2334 2909
2335/* simply recalculate all periodics */ 2910/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2911/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337static void noinline 2912static void noinline ecb_cold
2338periodics_reschedule (EV_P) 2913periodics_reschedule (EV_P)
2339{ 2914{
2340 int i; 2915 int i;
2341 2916
2342 /* adjust periodics after time jump */ 2917 /* adjust periodics after time jump */
… …
2355 reheap (periodics, periodiccnt); 2930 reheap (periodics, periodiccnt);
2356} 2931}
2357#endif 2932#endif
2358 2933
2359/* adjust all timers by a given offset */ 2934/* adjust all timers by a given offset */
2360static void noinline 2935static void noinline ecb_cold
2361timers_reschedule (EV_P_ ev_tstamp adjust) 2936timers_reschedule (EV_P_ ev_tstamp adjust)
2362{ 2937{
2363 int i; 2938 int i;
2364 2939
2365 for (i = 0; i < timercnt; ++i) 2940 for (i = 0; i < timercnt; ++i)
… …
2439 3014
2440 mn_now = ev_rt_now; 3015 mn_now = ev_rt_now;
2441 } 3016 }
2442} 3017}
2443 3018
2444void 3019int
2445ev_run (EV_P_ int flags) 3020ev_run (EV_P_ int flags)
2446{ 3021{
2447#if EV_FEATURE_API 3022#if EV_FEATURE_API
2448 ++loop_depth; 3023 ++loop_depth;
2449#endif 3024#endif
… …
2507 ev_tstamp prev_mn_now = mn_now; 3082 ev_tstamp prev_mn_now = mn_now;
2508 3083
2509 /* update time to cancel out callback processing overhead */ 3084 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100); 3085 time_update (EV_A_ 1e100);
2511 3086
3087 /* from now on, we want a pipe-wake-up */
3088 pipe_write_wanted = 1;
3089
3090 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3091
2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3092 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2513 { 3093 {
2514 waittime = MAX_BLOCKTIME; 3094 waittime = MAX_BLOCKTIME;
2515 3095
2516 if (timercnt) 3096 if (timercnt)
2517 { 3097 {
2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3098 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519 if (waittime > to) waittime = to; 3099 if (waittime > to) waittime = to;
2520 } 3100 }
2521 3101
2522#if EV_PERIODIC_ENABLE 3102#if EV_PERIODIC_ENABLE
2523 if (periodiccnt) 3103 if (periodiccnt)
2524 { 3104 {
2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3105 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526 if (waittime > to) waittime = to; 3106 if (waittime > to) waittime = to;
2527 } 3107 }
2528#endif 3108#endif
2529 3109
2530 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3110 /* don't let timeouts decrease the waittime below timeout_blocktime */
2531 if (expect_false (waittime < timeout_blocktime)) 3111 if (expect_false (waittime < timeout_blocktime))
2532 waittime = timeout_blocktime; 3112 waittime = timeout_blocktime;
3113
3114 /* at this point, we NEED to wait, so we have to ensure */
3115 /* to pass a minimum nonzero value to the backend */
3116 if (expect_false (waittime < backend_mintime))
3117 waittime = backend_mintime;
2533 3118
2534 /* extra check because io_blocktime is commonly 0 */ 3119 /* extra check because io_blocktime is commonly 0 */
2535 if (expect_false (io_blocktime)) 3120 if (expect_false (io_blocktime))
2536 { 3121 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3122 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538 3123
2539 if (sleeptime > waittime - backend_fudge) 3124 if (sleeptime > waittime - backend_mintime)
2540 sleeptime = waittime - backend_fudge; 3125 sleeptime = waittime - backend_mintime;
2541 3126
2542 if (expect_true (sleeptime > 0.)) 3127 if (expect_true (sleeptime > 0.))
2543 { 3128 {
2544 ev_sleep (sleeptime); 3129 ev_sleep (sleeptime);
2545 waittime -= sleeptime; 3130 waittime -= sleeptime;
… …
2552#endif 3137#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3138 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554 backend_poll (EV_A_ waittime); 3139 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3140 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2556 3141
3142 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3143
3144 ECB_MEMORY_FENCE_ACQUIRE;
3145 if (pipe_write_skipped)
3146 {
3147 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3148 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3149 }
3150
3151
2557 /* update ev_rt_now, do magic */ 3152 /* update ev_rt_now, do magic */
2558 time_update (EV_A_ waittime + sleeptime); 3153 time_update (EV_A_ waittime + sleeptime);
2559 } 3154 }
2560 3155
2561 /* queue pending timers and reschedule them */ 3156 /* queue pending timers and reschedule them */
… …
2587 loop_done = EVBREAK_CANCEL; 3182 loop_done = EVBREAK_CANCEL;
2588 3183
2589#if EV_FEATURE_API 3184#if EV_FEATURE_API
2590 --loop_depth; 3185 --loop_depth;
2591#endif 3186#endif
3187
3188 return activecnt;
2592} 3189}
2593 3190
2594void 3191void
2595ev_break (EV_P_ int how) 3192ev_break (EV_P_ int how) EV_THROW
2596{ 3193{
2597 loop_done = how; 3194 loop_done = how;
2598} 3195}
2599 3196
2600void 3197void
2601ev_ref (EV_P) 3198ev_ref (EV_P) EV_THROW
2602{ 3199{
2603 ++activecnt; 3200 ++activecnt;
2604} 3201}
2605 3202
2606void 3203void
2607ev_unref (EV_P) 3204ev_unref (EV_P) EV_THROW
2608{ 3205{
2609 --activecnt; 3206 --activecnt;
2610} 3207}
2611 3208
2612void 3209void
2613ev_now_update (EV_P) 3210ev_now_update (EV_P) EV_THROW
2614{ 3211{
2615 time_update (EV_A_ 1e100); 3212 time_update (EV_A_ 1e100);
2616} 3213}
2617 3214
2618void 3215void
2619ev_suspend (EV_P) 3216ev_suspend (EV_P) EV_THROW
2620{ 3217{
2621 ev_now_update (EV_A); 3218 ev_now_update (EV_A);
2622} 3219}
2623 3220
2624void 3221void
2625ev_resume (EV_P) 3222ev_resume (EV_P) EV_THROW
2626{ 3223{
2627 ev_tstamp mn_prev = mn_now; 3224 ev_tstamp mn_prev = mn_now;
2628 3225
2629 ev_now_update (EV_A); 3226 ev_now_update (EV_A);
2630 timers_reschedule (EV_A_ mn_now - mn_prev); 3227 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2669 w->pending = 0; 3266 w->pending = 0;
2670 } 3267 }
2671} 3268}
2672 3269
2673int 3270int
2674ev_clear_pending (EV_P_ void *w) 3271ev_clear_pending (EV_P_ void *w) EV_THROW
2675{ 3272{
2676 W w_ = (W)w; 3273 W w_ = (W)w;
2677 int pending = w_->pending; 3274 int pending = w_->pending;
2678 3275
2679 if (expect_true (pending)) 3276 if (expect_true (pending))
… …
2712} 3309}
2713 3310
2714/*****************************************************************************/ 3311/*****************************************************************************/
2715 3312
2716void noinline 3313void noinline
2717ev_io_start (EV_P_ ev_io *w) 3314ev_io_start (EV_P_ ev_io *w) EV_THROW
2718{ 3315{
2719 int fd = w->fd; 3316 int fd = w->fd;
2720 3317
2721 if (expect_false (ev_is_active (w))) 3318 if (expect_false (ev_is_active (w)))
2722 return; 3319 return;
… …
2728 3325
2729 ev_start (EV_A_ (W)w, 1); 3326 ev_start (EV_A_ (W)w, 1);
2730 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3327 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2731 wlist_add (&anfds[fd].head, (WL)w); 3328 wlist_add (&anfds[fd].head, (WL)w);
2732 3329
3330 /* common bug, apparently */
3331 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3332
2733 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3333 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2734 w->events &= ~EV__IOFDSET; 3334 w->events &= ~EV__IOFDSET;
2735 3335
2736 EV_FREQUENT_CHECK; 3336 EV_FREQUENT_CHECK;
2737} 3337}
2738 3338
2739void noinline 3339void noinline
2740ev_io_stop (EV_P_ ev_io *w) 3340ev_io_stop (EV_P_ ev_io *w) EV_THROW
2741{ 3341{
2742 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2743 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2744 return; 3344 return;
2745 3345
… …
2754 3354
2755 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
2756} 3356}
2757 3357
2758void noinline 3358void noinline
2759ev_timer_start (EV_P_ ev_timer *w) 3359ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2760{ 3360{
2761 if (expect_false (ev_is_active (w))) 3361 if (expect_false (ev_is_active (w)))
2762 return; 3362 return;
2763 3363
2764 ev_at (w) += mn_now; 3364 ev_at (w) += mn_now;
… …
2778 3378
2779 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3379 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2780} 3380}
2781 3381
2782void noinline 3382void noinline
2783ev_timer_stop (EV_P_ ev_timer *w) 3383ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2784{ 3384{
2785 clear_pending (EV_A_ (W)w); 3385 clear_pending (EV_A_ (W)w);
2786 if (expect_false (!ev_is_active (w))) 3386 if (expect_false (!ev_is_active (w)))
2787 return; 3387 return;
2788 3388
… …
2808 3408
2809 EV_FREQUENT_CHECK; 3409 EV_FREQUENT_CHECK;
2810} 3410}
2811 3411
2812void noinline 3412void noinline
2813ev_timer_again (EV_P_ ev_timer *w) 3413ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2814{ 3414{
2815 EV_FREQUENT_CHECK; 3415 EV_FREQUENT_CHECK;
3416
3417 clear_pending (EV_A_ (W)w);
2816 3418
2817 if (ev_is_active (w)) 3419 if (ev_is_active (w))
2818 { 3420 {
2819 if (w->repeat) 3421 if (w->repeat)
2820 { 3422 {
… …
2833 3435
2834 EV_FREQUENT_CHECK; 3436 EV_FREQUENT_CHECK;
2835} 3437}
2836 3438
2837ev_tstamp 3439ev_tstamp
2838ev_timer_remaining (EV_P_ ev_timer *w) 3440ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2839{ 3441{
2840 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3442 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841} 3443}
2842 3444
2843#if EV_PERIODIC_ENABLE 3445#if EV_PERIODIC_ENABLE
2844void noinline 3446void noinline
2845ev_periodic_start (EV_P_ ev_periodic *w) 3447ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2846{ 3448{
2847 if (expect_false (ev_is_active (w))) 3449 if (expect_false (ev_is_active (w)))
2848 return; 3450 return;
2849 3451
2850 if (w->reschedule_cb) 3452 if (w->reschedule_cb)
… …
2870 3472
2871 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3473 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2872} 3474}
2873 3475
2874void noinline 3476void noinline
2875ev_periodic_stop (EV_P_ ev_periodic *w) 3477ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2876{ 3478{
2877 clear_pending (EV_A_ (W)w); 3479 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w))) 3480 if (expect_false (!ev_is_active (w)))
2879 return; 3481 return;
2880 3482
… …
2898 3500
2899 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2900} 3502}
2901 3503
2902void noinline 3504void noinline
2903ev_periodic_again (EV_P_ ev_periodic *w) 3505ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2904{ 3506{
2905 /* TODO: use adjustheap and recalculation */ 3507 /* TODO: use adjustheap and recalculation */
2906 ev_periodic_stop (EV_A_ w); 3508 ev_periodic_stop (EV_A_ w);
2907 ev_periodic_start (EV_A_ w); 3509 ev_periodic_start (EV_A_ w);
2908} 3510}
… …
2913#endif 3515#endif
2914 3516
2915#if EV_SIGNAL_ENABLE 3517#if EV_SIGNAL_ENABLE
2916 3518
2917void noinline 3519void noinline
2918ev_signal_start (EV_P_ ev_signal *w) 3520ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2919{ 3521{
2920 if (expect_false (ev_is_active (w))) 3522 if (expect_false (ev_is_active (w)))
2921 return; 3523 return;
2922 3524
2923 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3525 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2925#if EV_MULTIPLICITY 3527#if EV_MULTIPLICITY
2926 assert (("libev: a signal must not be attached to two different loops", 3528 assert (("libev: a signal must not be attached to two different loops",
2927 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3529 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2928 3530
2929 signals [w->signum - 1].loop = EV_A; 3531 signals [w->signum - 1].loop = EV_A;
3532 ECB_MEMORY_FENCE_RELEASE;
2930#endif 3533#endif
2931 3534
2932 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2933 3536
2934#if EV_USE_SIGNALFD 3537#if EV_USE_SIGNALFD
… …
2994 3597
2995 EV_FREQUENT_CHECK; 3598 EV_FREQUENT_CHECK;
2996} 3599}
2997 3600
2998void noinline 3601void noinline
2999ev_signal_stop (EV_P_ ev_signal *w) 3602ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3000{ 3603{
3001 clear_pending (EV_A_ (W)w); 3604 clear_pending (EV_A_ (W)w);
3002 if (expect_false (!ev_is_active (w))) 3605 if (expect_false (!ev_is_active (w)))
3003 return; 3606 return;
3004 3607
… …
3035#endif 3638#endif
3036 3639
3037#if EV_CHILD_ENABLE 3640#if EV_CHILD_ENABLE
3038 3641
3039void 3642void
3040ev_child_start (EV_P_ ev_child *w) 3643ev_child_start (EV_P_ ev_child *w) EV_THROW
3041{ 3644{
3042#if EV_MULTIPLICITY 3645#if EV_MULTIPLICITY
3043 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3646 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3044#endif 3647#endif
3045 if (expect_false (ev_is_active (w))) 3648 if (expect_false (ev_is_active (w)))
… …
3052 3655
3053 EV_FREQUENT_CHECK; 3656 EV_FREQUENT_CHECK;
3054} 3657}
3055 3658
3056void 3659void
3057ev_child_stop (EV_P_ ev_child *w) 3660ev_child_stop (EV_P_ ev_child *w) EV_THROW
3058{ 3661{
3059 clear_pending (EV_A_ (W)w); 3662 clear_pending (EV_A_ (W)w);
3060 if (expect_false (!ev_is_active (w))) 3663 if (expect_false (!ev_is_active (w)))
3061 return; 3664 return;
3062 3665
… …
3214 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3817 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len; 3818 ofs += sizeof (struct inotify_event) + ev->len;
3216 } 3819 }
3217} 3820}
3218 3821
3219inline_size void 3822inline_size void ecb_cold
3220ev_check_2625 (EV_P) 3823ev_check_2625 (EV_P)
3221{ 3824{
3222 /* kernels < 2.6.25 are borked 3825 /* kernels < 2.6.25 are borked
3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3826 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224 */ 3827 */
… …
3229} 3832}
3230 3833
3231inline_size int 3834inline_size int
3232infy_newfd (void) 3835infy_newfd (void)
3233{ 3836{
3234#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3837#if defined IN_CLOEXEC && defined IN_NONBLOCK
3235 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3838 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236 if (fd >= 0) 3839 if (fd >= 0)
3237 return fd; 3840 return fd;
3238#endif 3841#endif
3239 return inotify_init (); 3842 return inotify_init ();
… …
3314#else 3917#else
3315# define EV_LSTAT(p,b) lstat (p, b) 3918# define EV_LSTAT(p,b) lstat (p, b)
3316#endif 3919#endif
3317 3920
3318void 3921void
3319ev_stat_stat (EV_P_ ev_stat *w) 3922ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3320{ 3923{
3321 if (lstat (w->path, &w->attr) < 0) 3924 if (lstat (w->path, &w->attr) < 0)
3322 w->attr.st_nlink = 0; 3925 w->attr.st_nlink = 0;
3323 else if (!w->attr.st_nlink) 3926 else if (!w->attr.st_nlink)
3324 w->attr.st_nlink = 1; 3927 w->attr.st_nlink = 1;
… …
3363 ev_feed_event (EV_A_ w, EV_STAT); 3966 ev_feed_event (EV_A_ w, EV_STAT);
3364 } 3967 }
3365} 3968}
3366 3969
3367void 3970void
3368ev_stat_start (EV_P_ ev_stat *w) 3971ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3369{ 3972{
3370 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
3371 return; 3974 return;
3372 3975
3373 ev_stat_stat (EV_A_ w); 3976 ev_stat_stat (EV_A_ w);
… …
3394 3997
3395 EV_FREQUENT_CHECK; 3998 EV_FREQUENT_CHECK;
3396} 3999}
3397 4000
3398void 4001void
3399ev_stat_stop (EV_P_ ev_stat *w) 4002ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3400{ 4003{
3401 clear_pending (EV_A_ (W)w); 4004 clear_pending (EV_A_ (W)w);
3402 if (expect_false (!ev_is_active (w))) 4005 if (expect_false (!ev_is_active (w)))
3403 return; 4006 return;
3404 4007
… …
3420} 4023}
3421#endif 4024#endif
3422 4025
3423#if EV_IDLE_ENABLE 4026#if EV_IDLE_ENABLE
3424void 4027void
3425ev_idle_start (EV_P_ ev_idle *w) 4028ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3426{ 4029{
3427 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
3428 return; 4031 return;
3429 4032
3430 pri_adjust (EV_A_ (W)w); 4033 pri_adjust (EV_A_ (W)w);
… …
3443 4046
3444 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
3445} 4048}
3446 4049
3447void 4050void
3448ev_idle_stop (EV_P_ ev_idle *w) 4051ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3449{ 4052{
3450 clear_pending (EV_A_ (W)w); 4053 clear_pending (EV_A_ (W)w);
3451 if (expect_false (!ev_is_active (w))) 4054 if (expect_false (!ev_is_active (w)))
3452 return; 4055 return;
3453 4056
… …
3467} 4070}
3468#endif 4071#endif
3469 4072
3470#if EV_PREPARE_ENABLE 4073#if EV_PREPARE_ENABLE
3471void 4074void
3472ev_prepare_start (EV_P_ ev_prepare *w) 4075ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3473{ 4076{
3474 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
3475 return; 4078 return;
3476 4079
3477 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
… …
3482 4085
3483 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3484} 4087}
3485 4088
3486void 4089void
3487ev_prepare_stop (EV_P_ ev_prepare *w) 4090ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3488{ 4091{
3489 clear_pending (EV_A_ (W)w); 4092 clear_pending (EV_A_ (W)w);
3490 if (expect_false (!ev_is_active (w))) 4093 if (expect_false (!ev_is_active (w)))
3491 return; 4094 return;
3492 4095
… …
3505} 4108}
3506#endif 4109#endif
3507 4110
3508#if EV_CHECK_ENABLE 4111#if EV_CHECK_ENABLE
3509void 4112void
3510ev_check_start (EV_P_ ev_check *w) 4113ev_check_start (EV_P_ ev_check *w) EV_THROW
3511{ 4114{
3512 if (expect_false (ev_is_active (w))) 4115 if (expect_false (ev_is_active (w)))
3513 return; 4116 return;
3514 4117
3515 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
… …
3520 4123
3521 EV_FREQUENT_CHECK; 4124 EV_FREQUENT_CHECK;
3522} 4125}
3523 4126
3524void 4127void
3525ev_check_stop (EV_P_ ev_check *w) 4128ev_check_stop (EV_P_ ev_check *w) EV_THROW
3526{ 4129{
3527 clear_pending (EV_A_ (W)w); 4130 clear_pending (EV_A_ (W)w);
3528 if (expect_false (!ev_is_active (w))) 4131 if (expect_false (!ev_is_active (w)))
3529 return; 4132 return;
3530 4133
… …
3543} 4146}
3544#endif 4147#endif
3545 4148
3546#if EV_EMBED_ENABLE 4149#if EV_EMBED_ENABLE
3547void noinline 4150void noinline
3548ev_embed_sweep (EV_P_ ev_embed *w) 4151ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3549{ 4152{
3550 ev_run (w->other, EVRUN_NOWAIT); 4153 ev_run (w->other, EVRUN_NOWAIT);
3551} 4154}
3552 4155
3553static void 4156static void
… …
3601 ev_idle_stop (EV_A_ idle); 4204 ev_idle_stop (EV_A_ idle);
3602} 4205}
3603#endif 4206#endif
3604 4207
3605void 4208void
3606ev_embed_start (EV_P_ ev_embed *w) 4209ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3607{ 4210{
3608 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
3609 return; 4212 return;
3610 4213
3611 { 4214 {
… …
3632 4235
3633 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3634} 4237}
3635 4238
3636void 4239void
3637ev_embed_stop (EV_P_ ev_embed *w) 4240ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3638{ 4241{
3639 clear_pending (EV_A_ (W)w); 4242 clear_pending (EV_A_ (W)w);
3640 if (expect_false (!ev_is_active (w))) 4243 if (expect_false (!ev_is_active (w)))
3641 return; 4244 return;
3642 4245
… …
3652} 4255}
3653#endif 4256#endif
3654 4257
3655#if EV_FORK_ENABLE 4258#if EV_FORK_ENABLE
3656void 4259void
3657ev_fork_start (EV_P_ ev_fork *w) 4260ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3658{ 4261{
3659 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3660 return; 4263 return;
3661 4264
3662 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
… …
3667 4270
3668 EV_FREQUENT_CHECK; 4271 EV_FREQUENT_CHECK;
3669} 4272}
3670 4273
3671void 4274void
3672ev_fork_stop (EV_P_ ev_fork *w) 4275ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3673{ 4276{
3674 clear_pending (EV_A_ (W)w); 4277 clear_pending (EV_A_ (W)w);
3675 if (expect_false (!ev_is_active (w))) 4278 if (expect_false (!ev_is_active (w)))
3676 return; 4279 return;
3677 4280
… …
3690} 4293}
3691#endif 4294#endif
3692 4295
3693#if EV_CLEANUP_ENABLE 4296#if EV_CLEANUP_ENABLE
3694void 4297void
3695ev_cleanup_start (EV_P_ ev_cleanup *w) 4298ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3696{ 4299{
3697 if (expect_false (ev_is_active (w))) 4300 if (expect_false (ev_is_active (w)))
3698 return; 4301 return;
3699 4302
3700 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
… …
3707 ev_unref (EV_A); 4310 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK; 4311 EV_FREQUENT_CHECK;
3709} 4312}
3710 4313
3711void 4314void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w) 4315ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3713{ 4316{
3714 clear_pending (EV_A_ (W)w); 4317 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w))) 4318 if (expect_false (!ev_is_active (w)))
3716 return; 4319 return;
3717 4320
… …
3731} 4334}
3732#endif 4335#endif
3733 4336
3734#if EV_ASYNC_ENABLE 4337#if EV_ASYNC_ENABLE
3735void 4338void
3736ev_async_start (EV_P_ ev_async *w) 4339ev_async_start (EV_P_ ev_async *w) EV_THROW
3737{ 4340{
3738 if (expect_false (ev_is_active (w))) 4341 if (expect_false (ev_is_active (w)))
3739 return; 4342 return;
3740 4343
3741 w->sent = 0; 4344 w->sent = 0;
… …
3750 4353
3751 EV_FREQUENT_CHECK; 4354 EV_FREQUENT_CHECK;
3752} 4355}
3753 4356
3754void 4357void
3755ev_async_stop (EV_P_ ev_async *w) 4358ev_async_stop (EV_P_ ev_async *w) EV_THROW
3756{ 4359{
3757 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
3758 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
3759 return; 4362 return;
3760 4363
… …
3771 4374
3772 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
3773} 4376}
3774 4377
3775void 4378void
3776ev_async_send (EV_P_ ev_async *w) 4379ev_async_send (EV_P_ ev_async *w) EV_THROW
3777{ 4380{
3778 w->sent = 1; 4381 w->sent = 1;
3779 evpipe_write (EV_A_ &async_pending); 4382 evpipe_write (EV_A_ &async_pending);
3780} 4383}
3781#endif 4384#endif
… …
3818 4421
3819 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4422 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3820} 4423}
3821 4424
3822void 4425void
3823ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4426ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3824{ 4427{
3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4428 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3826 4429
3827 if (expect_false (!once)) 4430 if (expect_false (!once))
3828 { 4431 {
… …
3849} 4452}
3850 4453
3851/*****************************************************************************/ 4454/*****************************************************************************/
3852 4455
3853#if EV_WALK_ENABLE 4456#if EV_WALK_ENABLE
3854void 4457void ecb_cold
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4458ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3856{ 4459{
3857 int i, j; 4460 int i, j;
3858 ev_watcher_list *wl, *wn; 4461 ev_watcher_list *wl, *wn;
3859 4462
3860 if (types & (EV_IO | EV_EMBED)) 4463 if (types & (EV_IO | EV_EMBED))
… …
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4506 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif 4507#endif
3905 4508
3906#if EV_IDLE_ENABLE 4509#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE) 4510 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; ) 4511 for (j = NUMPRI; j--; )
3909 for (i = idlecnt [j]; i--; ) 4512 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]); 4513 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif 4514#endif
3912 4515
3913#if EV_FORK_ENABLE 4516#if EV_FORK_ENABLE
… …
3966 4569
3967#if EV_MULTIPLICITY 4570#if EV_MULTIPLICITY
3968 #include "ev_wrap.h" 4571 #include "ev_wrap.h"
3969#endif 4572#endif
3970 4573
3971EV_CPP(})
3972

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines