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Comparing libev/ev.c (file contents):
Revision 1.371 by root, Mon Feb 7 21:45:32 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
178# include EV_H 183# include EV_H
179#else 184#else
180# include "ev.h" 185# include "ev.h"
181#endif 186#endif
182 187
183EV_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
184 198
185#ifndef _WIN32 199#ifndef _WIN32
186# include <sys/time.h> 200# include <sys/time.h>
187# include <sys/wait.h> 201# include <sys/wait.h>
188# include <unistd.h> 202# include <unistd.h>
189#else 203#else
190# include <io.h> 204# include <io.h>
191# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
192# include <windows.h> 207# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
195# endif 210# endif
196# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
205#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
206 221
207/* 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 */
208 223
209/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 225#if defined EV_NSIG
211/* use what's provided */ 226/* use what's provided */
212#elif defined (NSIG) 227#elif defined NSIG
213# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 229#elif defined _NSIG
215# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 231#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 233#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 237#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 239#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 243#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 245#else
231# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
234# define EV_NSIG 65 249# define EV_NSIG 65
235#endif 250#endif
236 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
237#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 259# else
241# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
242# endif 261# endif
243#endif 262#endif
244 263
245#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 267# else
249# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
250# endif 269# endif
251#endif 270#endif
… …
341#endif 360#endif
342 361
343/* 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, */
344/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 365# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
351# else 370# else
… …
377# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
378#endif 397#endif
379 398
380#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
381/* 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 */
382# if !defined(_WIN32) && !defined(__hpux) 401# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 402# include <sys/select.h>
384# endif 403# endif
385#endif 404#endif
386 405
387#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
… …
390/* 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 */
391# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
394# endif 413# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 414#endif
400 415
401#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
402/* 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 */
403# include <stdint.h> 418# include <stdint.h>
… …
443#else 458#else
444# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
445#endif 460#endif
446 461
447/* 462/*
448 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 465 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 468
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#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) */
459 471
460#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)
461#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)
462 474
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;
463#if __GNUC__ >= 4 519 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
465# 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;
466#else 536#else
467# define expect(expr,value) (expr) 537 #include <inttypes.h>
468# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
470# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
471# 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)))
472#endif 557 #endif
558#endif
473 559
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. */
474#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#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
476#define inline_size static inline 1013#define inline_size ecb_inline
477 1014
478#if EV_FEATURE_CODE 1015#if EV_FEATURE_CODE
479# define inline_speed static inline 1016# define inline_speed ecb_inline
480#else 1017#else
481# define inline_speed static noinline 1018# define inline_speed static noinline
482#endif 1019#endif
483 1020
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
523# include "ev_win32.c" 1060# include "ev_win32.c"
524#endif 1061#endif
525 1062
526/*****************************************************************************/ 1063/*****************************************************************************/
527 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
528#ifdef __linux 1113#ifdef __linux
529# include <sys/utsname.h> 1114# include <sys/utsname.h>
530#endif 1115#endif
531 1116
532static unsigned int noinline 1117static unsigned int noinline ecb_cold
533ev_linux_version (void) 1118ev_linux_version (void)
534{ 1119{
535#ifdef __linux 1120#ifdef __linux
536 unsigned int v = 0; 1121 unsigned int v = 0;
537 struct utsname buf; 1122 struct utsname buf;
… …
566} 1151}
567 1152
568/*****************************************************************************/ 1153/*****************************************************************************/
569 1154
570#if EV_AVOID_STDIO 1155#if EV_AVOID_STDIO
571static void noinline 1156static void noinline ecb_cold
572ev_printerr (const char *msg) 1157ev_printerr (const char *msg)
573{ 1158{
574 write (STDERR_FILENO, msg, strlen (msg)); 1159 write (STDERR_FILENO, msg, strlen (msg));
575} 1160}
576#endif 1161#endif
577 1162
578static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
579 1164
580void 1165void ecb_cold
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
582{ 1167{
583 syserr_cb = cb; 1168 syserr_cb = cb;
584} 1169}
585 1170
586static void noinline 1171static void noinline ecb_cold
587ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
588{ 1173{
589 if (!msg) 1174 if (!msg)
590 msg = "(libev) system error"; 1175 msg = "(libev) system error";
591 1176
… …
604 abort (); 1189 abort ();
605 } 1190 }
606} 1191}
607 1192
608static void * 1193static void *
609ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
610{ 1195{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
615 * 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
616 * 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.
617 */ 1201 */
618 1202
619 if (size) 1203 if (size)
620 return realloc (ptr, size); 1204 return realloc (ptr, size);
621 1205
622 free (ptr); 1206 free (ptr);
623 return 0; 1207 return 0;
624#endif
625} 1208}
626 1209
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
628 1211
629void 1212void ecb_cold
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
631{ 1214{
632 alloc = cb; 1215 alloc = cb;
633} 1216}
634 1217
635inline_speed void * 1218inline_speed void *
… …
723 #undef VAR 1306 #undef VAR
724 }; 1307 };
725 #include "ev_wrap.h" 1308 #include "ev_wrap.h"
726 1309
727 static struct ev_loop default_loop_struct; 1310 static struct ev_loop default_loop_struct;
728 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 */
729 1312
730#else 1313#else
731 1314
732 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 */
733 #define VAR(name,decl) static decl; 1316 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1317 #include "ev_vars.h"
735 #undef VAR 1318 #undef VAR
736 1319
737 static int ev_default_loop_ptr; 1320 static int ev_default_loop_ptr;
… …
752 1335
753/*****************************************************************************/ 1336/*****************************************************************************/
754 1337
755#ifndef EV_HAVE_EV_TIME 1338#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1339ev_tstamp
757ev_time (void) 1340ev_time (void) EV_THROW
758{ 1341{
759#if EV_USE_REALTIME 1342#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1343 if (expect_true (have_realtime))
761 { 1344 {
762 struct timespec ts; 1345 struct timespec ts;
… …
786 return ev_time (); 1369 return ev_time ();
787} 1370}
788 1371
789#if EV_MULTIPLICITY 1372#if EV_MULTIPLICITY
790ev_tstamp 1373ev_tstamp
791ev_now (EV_P) 1374ev_now (EV_P) EV_THROW
792{ 1375{
793 return ev_rt_now; 1376 return ev_rt_now;
794} 1377}
795#endif 1378#endif
796 1379
797void 1380void
798ev_sleep (ev_tstamp delay) 1381ev_sleep (ev_tstamp delay) EV_THROW
799{ 1382{
800 if (delay > 0.) 1383 if (delay > 0.)
801 { 1384 {
802#if EV_USE_NANOSLEEP 1385#if EV_USE_NANOSLEEP
803 struct timespec ts; 1386 struct timespec ts;
804 1387
805 EV_TS_SET (ts, delay); 1388 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1389 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1390#elif defined _WIN32
808 Sleep ((unsigned long)(delay * 1e3)); 1391 Sleep ((unsigned long)(delay * 1e3));
809#else 1392#else
810 struct timeval tv; 1393 struct timeval tv;
811 1394
812 /* 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 */
… …
816 select (0, 0, 0, 0, &tv); 1399 select (0, 0, 0, 0, &tv);
817#endif 1400#endif
818 } 1401 }
819} 1402}
820 1403
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 1404/*****************************************************************************/
830 1405
831#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 */
832 1407
833/* find a suitable new size for the given array, */ 1408/* find a suitable new size for the given array, */
… …
839 1414
840 do 1415 do
841 ncur <<= 1; 1416 ncur <<= 1;
842 while (cnt > ncur); 1417 while (cnt > ncur);
843 1418
844 /* 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 */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1420 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1421 {
847 ncur *= elem; 1422 ncur *= elem;
848 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);
849 ncur = ncur - sizeof (void *) * 4; 1424 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1426 }
852 1427
853 return ncur; 1428 return ncur;
854} 1429}
855 1430
856static noinline void * 1431static void * noinline ecb_cold
857array_realloc (int elem, void *base, int *cur, int cnt) 1432array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1433{
859 *cur = array_nextsize (elem, *cur, cnt); 1434 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1435 return ev_realloc (base, elem * *cur);
861} 1436}
… …
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1439 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1440
866#define array_needsize(type,base,cur,cnt,init) \ 1441#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1442 if (expect_false ((cnt) > (cur))) \
868 { \ 1443 { \
869 int ocur_ = (cur); \ 1444 int ecb_unused ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 1445 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 1446 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 1447 init ((base) + (ocur_), (cur) - ocur_); \
873 } 1448 }
874 1449
… …
892pendingcb (EV_P_ ev_prepare *w, int revents) 1467pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 1468{
894} 1469}
895 1470
896void noinline 1471void noinline
897ev_feed_event (EV_P_ void *w, int revents) 1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW
898{ 1473{
899 W w_ = (W)w; 1474 W w_ = (W)w;
900 int pri = ABSPRI (w_); 1475 int pri = ABSPRI (w_);
901 1476
902 if (expect_false (w_->pending)) 1477 if (expect_false (w_->pending))
… …
906 w_->pending = ++pendingcnt [pri]; 1481 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_; 1483 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 1484 pendings [pri][w_->pending - 1].events = revents;
910 } 1485 }
1486
1487 pendingpri = NUMPRI - 1;
911} 1488}
912 1489
913inline_speed void 1490inline_speed void
914feed_reverse (EV_P_ W w) 1491feed_reverse (EV_P_ W w)
915{ 1492{
… …
961 if (expect_true (!anfd->reify)) 1538 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 1539 fd_event_nocheck (EV_A_ fd, revents);
963} 1540}
964 1541
965void 1542void
966ev_feed_fd_event (EV_P_ int fd, int revents) 1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 1544{
968 if (fd >= 0 && fd < anfdmax) 1545 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 1546 fd_event_nocheck (EV_A_ fd, revents);
970} 1547}
971 1548
… …
980 for (i = 0; i < fdchangecnt; ++i) 1557 for (i = 0; i < fdchangecnt; ++i)
981 { 1558 {
982 int fd = fdchanges [i]; 1559 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd; 1560 ANFD *anfd = anfds + fd;
984 1561
985 if (anfd->reify & EV__IOFDSET) 1562 if (anfd->reify & EV__IOFDSET && anfd->head)
986 { 1563 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 1564 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988 1565
989 if (handle != anfd->handle) 1566 if (handle != anfd->handle)
990 { 1567 {
… …
1044 fdchanges [fdchangecnt - 1] = fd; 1621 fdchanges [fdchangecnt - 1] = fd;
1045 } 1622 }
1046} 1623}
1047 1624
1048/* 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 */
1049inline_speed void 1626inline_speed void ecb_cold
1050fd_kill (EV_P_ int fd) 1627fd_kill (EV_P_ int fd)
1051{ 1628{
1052 ev_io *w; 1629 ev_io *w;
1053 1630
1054 while ((w = (ev_io *)anfds [fd].head)) 1631 while ((w = (ev_io *)anfds [fd].head))
… …
1057 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);
1058 } 1635 }
1059} 1636}
1060 1637
1061/* check whether the given fd is actually valid, for error recovery */ 1638/* check whether the given fd is actually valid, for error recovery */
1062inline_size int 1639inline_size int ecb_cold
1063fd_valid (int fd) 1640fd_valid (int fd)
1064{ 1641{
1065#ifdef _WIN32 1642#ifdef _WIN32
1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067#else 1644#else
1068 return fcntl (fd, F_GETFD) != -1; 1645 return fcntl (fd, F_GETFD) != -1;
1069#endif 1646#endif
1070} 1647}
1071 1648
1072/* called on EBADF to verify fds */ 1649/* called on EBADF to verify fds */
1073static void noinline 1650static void noinline ecb_cold
1074fd_ebadf (EV_P) 1651fd_ebadf (EV_P)
1075{ 1652{
1076 int fd; 1653 int fd;
1077 1654
1078 for (fd = 0; fd < anfdmax; ++fd) 1655 for (fd = 0; fd < anfdmax; ++fd)
… …
1080 if (!fd_valid (fd) && errno == EBADF) 1657 if (!fd_valid (fd) && errno == EBADF)
1081 fd_kill (EV_A_ fd); 1658 fd_kill (EV_A_ fd);
1082} 1659}
1083 1660
1084/* 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 */
1085static void noinline 1662static void noinline ecb_cold
1086fd_enomem (EV_P) 1663fd_enomem (EV_P)
1087{ 1664{
1088 int fd; 1665 int fd;
1089 1666
1090 for (fd = anfdmax; fd--; ) 1667 for (fd = anfdmax; fd--; )
… …
1285 1862
1286/*****************************************************************************/ 1863/*****************************************************************************/
1287 1864
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289 1866
1290static void noinline 1867static void noinline ecb_cold
1291evpipe_init (EV_P) 1868evpipe_init (EV_P)
1292{ 1869{
1293 if (!ev_is_active (&pipe_w)) 1870 if (!ev_is_active (&pipe_w))
1294 { 1871 {
1872 int fds [2];
1873
1295# if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1875 fds [0] = -1;
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1876 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL) 1877 if (fds [1] < 0 && errno == EINVAL)
1298 evfd = eventfd (0, 0); 1878 fds [1] = eventfd (0, 0);
1299 1879
1300 if (evfd >= 0) 1880 if (fds [1] < 0)
1881# endif
1301 { 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
1302 evpipe [0] = -1; 1891 evpipe [0] = fds [0];
1303 fd_intern (evfd); /* doing it twice doesn't hurt */ 1892
1304 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));
1305 } 1941 }
1306 else 1942 else
1307# endif 1943#endif
1308 { 1944 {
1309 while (pipe (evpipe)) 1945#ifdef _WIN32
1310 ev_syserr ("(libev) error creating signal/async pipe"); 1946 WSABUF buf;
1311 1947 DWORD sent;
1312 fd_intern (evpipe [0]); 1948 buf.buf = &buf;
1313 fd_intern (evpipe [1]); 1949 buf.len = 1;
1314 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
1315 } 1954 }
1316
1317 ev_io_start (EV_A_ &pipe_w);
1318 ev_unref (EV_A); /* watcher should not keep loop alive */
1319 }
1320}
1321
1322inline_size void
1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324{
1325 if (!*flag)
1326 {
1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1329
1330 *flag = 1;
1331
1332#if EV_USE_EVENTFD
1333 if (evfd >= 0)
1334 {
1335 uint64_t counter = 1;
1336 write (evfd, &counter, sizeof (uint64_t));
1337 }
1338 else
1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1345 write (evpipe [1], &dummy, 1);
1346 1955
1347 errno = old_errno; 1956 errno = old_errno;
1348 } 1957 }
1349} 1958}
1350 1959
… …
1353static void 1962static void
1354pipecb (EV_P_ ev_io *iow, int revents) 1963pipecb (EV_P_ ev_io *iow, int revents)
1355{ 1964{
1356 int i; 1965 int i;
1357 1966
1967 if (revents & EV_READ)
1968 {
1358#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1359 if (evfd >= 0) 1970 if (evpipe [0] < 0)
1360 { 1971 {
1361 uint64_t counter; 1972 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t)); 1973 read (evpipe [1], &counter, sizeof (uint64_t));
1363 } 1974 }
1364 else 1975 else
1365#endif 1976#endif
1366 { 1977 {
1367 char dummy; 1978 char dummy[4];
1368 /* 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
1369 read (evpipe [0], &dummy, 1); 1987 read (evpipe [0], &dummy, sizeof (dummy));
1988#endif
1989 }
1370 } 1990 }
1991
1992 pipe_write_skipped = 0;
1993
1994 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1371 1995
1372#if EV_SIGNAL_ENABLE 1996#if EV_SIGNAL_ENABLE
1373 if (sig_pending) 1997 if (sig_pending)
1374 { 1998 {
1375 sig_pending = 0; 1999 sig_pending = 0;
2000
2001 ECB_MEMORY_FENCE;
1376 2002
1377 for (i = EV_NSIG - 1; i--; ) 2003 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending)) 2004 if (expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1); 2005 ev_feed_signal_event (EV_A_ i + 1);
1380 } 2006 }
… …
1382 2008
1383#if EV_ASYNC_ENABLE 2009#if EV_ASYNC_ENABLE
1384 if (async_pending) 2010 if (async_pending)
1385 { 2011 {
1386 async_pending = 0; 2012 async_pending = 0;
2013
2014 ECB_MEMORY_FENCE;
1387 2015
1388 for (i = asynccnt; i--; ) 2016 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent) 2017 if (asyncs [i]->sent)
1390 { 2018 {
1391 asyncs [i]->sent = 0; 2019 asyncs [i]->sent = 0;
2020 ECB_MEMORY_FENCE_RELEASE;
1392 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2021 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1393 } 2022 }
1394 } 2023 }
1395#endif 2024#endif
1396} 2025}
1397 2026
1398/*****************************************************************************/ 2027/*****************************************************************************/
1399 2028
1400void 2029void
1401ev_feed_signal (int signum) 2030ev_feed_signal (int signum) EV_THROW
1402{ 2031{
1403#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
2033 ECB_MEMORY_FENCE_ACQUIRE;
1404 EV_P = signals [signum - 1].loop; 2034 EV_P = signals [signum - 1].loop;
1405 2035
1406 if (!EV_A) 2036 if (!EV_A)
1407 return; 2037 return;
1408#endif 2038#endif
… …
1420 2050
1421 ev_feed_signal (signum); 2051 ev_feed_signal (signum);
1422} 2052}
1423 2053
1424void noinline 2054void noinline
1425ev_feed_signal_event (EV_P_ int signum) 2055ev_feed_signal_event (EV_P_ int signum) EV_THROW
1426{ 2056{
1427 WL w; 2057 WL w;
1428 2058
1429 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2059 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1430 return; 2060 return;
1431 2061
1432 --signum; 2062 --signum;
1433 2063
1434#if EV_MULTIPLICITY 2064#if EV_MULTIPLICITY
… …
1438 if (expect_false (signals [signum].loop != EV_A)) 2068 if (expect_false (signals [signum].loop != EV_A))
1439 return; 2069 return;
1440#endif 2070#endif
1441 2071
1442 signals [signum].pending = 0; 2072 signals [signum].pending = 0;
2073 ECB_MEMORY_FENCE_RELEASE;
1443 2074
1444 for (w = signals [signum].head; w; w = w->next) 2075 for (w = signals [signum].head; w; w = w->next)
1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2076 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1446} 2077}
1447 2078
… …
1545#endif 2176#endif
1546#if EV_USE_SELECT 2177#if EV_USE_SELECT
1547# include "ev_select.c" 2178# include "ev_select.c"
1548#endif 2179#endif
1549 2180
1550int 2181int ecb_cold
1551ev_version_major (void) 2182ev_version_major (void) EV_THROW
1552{ 2183{
1553 return EV_VERSION_MAJOR; 2184 return EV_VERSION_MAJOR;
1554} 2185}
1555 2186
1556int 2187int ecb_cold
1557ev_version_minor (void) 2188ev_version_minor (void) EV_THROW
1558{ 2189{
1559 return EV_VERSION_MINOR; 2190 return EV_VERSION_MINOR;
1560} 2191}
1561 2192
1562/* 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 */
1563int inline_size 2194int inline_size ecb_cold
1564enable_secure (void) 2195enable_secure (void)
1565{ 2196{
1566#ifdef _WIN32 2197#ifdef _WIN32
1567 return 0; 2198 return 0;
1568#else 2199#else
1569 return getuid () != geteuid () 2200 return getuid () != geteuid ()
1570 || getgid () != getegid (); 2201 || getgid () != getegid ();
1571#endif 2202#endif
1572} 2203}
1573 2204
1574unsigned int 2205unsigned int ecb_cold
1575ev_supported_backends (void) 2206ev_supported_backends (void) EV_THROW
1576{ 2207{
1577 unsigned int flags = 0; 2208 unsigned int flags = 0;
1578 2209
1579 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2210 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1580 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2211 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1583 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2214 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1584 2215
1585 return flags; 2216 return flags;
1586} 2217}
1587 2218
1588unsigned int 2219unsigned int ecb_cold
1589ev_recommended_backends (void) 2220ev_recommended_backends (void) EV_THROW
1590{ 2221{
1591 unsigned int flags = ev_supported_backends (); 2222 unsigned int flags = ev_supported_backends ();
1592 2223
1593#ifndef __NetBSD__ 2224#ifndef __NetBSD__
1594 /* kqueue is borked on everything but netbsd apparently */ 2225 /* kqueue is borked on everything but netbsd apparently */
… …
1605#endif 2236#endif
1606 2237
1607 return flags; 2238 return flags;
1608} 2239}
1609 2240
1610unsigned int 2241unsigned int ecb_cold
1611ev_embeddable_backends (void) 2242ev_embeddable_backends (void) EV_THROW
1612{ 2243{
1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2244 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1614 2245
1615 /* 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 */
1616 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 */
… …
1618 2249
1619 return flags; 2250 return flags;
1620} 2251}
1621 2252
1622unsigned int 2253unsigned int
1623ev_backend (EV_P) 2254ev_backend (EV_P) EV_THROW
1624{ 2255{
1625 return backend; 2256 return backend;
1626} 2257}
1627 2258
1628#if EV_FEATURE_API 2259#if EV_FEATURE_API
1629unsigned int 2260unsigned int
1630ev_iteration (EV_P) 2261ev_iteration (EV_P) EV_THROW
1631{ 2262{
1632 return loop_count; 2263 return loop_count;
1633} 2264}
1634 2265
1635unsigned int 2266unsigned int
1636ev_depth (EV_P) 2267ev_depth (EV_P) EV_THROW
1637{ 2268{
1638 return loop_depth; 2269 return loop_depth;
1639} 2270}
1640 2271
1641void 2272void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1643{ 2274{
1644 io_blocktime = interval; 2275 io_blocktime = interval;
1645} 2276}
1646 2277
1647void 2278void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1649{ 2280{
1650 timeout_blocktime = interval; 2281 timeout_blocktime = interval;
1651} 2282}
1652 2283
1653void 2284void
1654ev_set_userdata (EV_P_ void *data) 2285ev_set_userdata (EV_P_ void *data) EV_THROW
1655{ 2286{
1656 userdata = data; 2287 userdata = data;
1657} 2288}
1658 2289
1659void * 2290void *
1660ev_userdata (EV_P) 2291ev_userdata (EV_P) EV_THROW
1661{ 2292{
1662 return userdata; 2293 return userdata;
1663} 2294}
1664 2295
2296void
1665void 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
1666{ 2298{
1667 invoke_cb = invoke_pending_cb; 2299 invoke_cb = invoke_pending_cb;
1668} 2300}
1669 2301
2302void
1670void 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
1671{ 2304{
1672 release_cb = release; 2305 release_cb = release;
1673 acquire_cb = acquire; 2306 acquire_cb = acquire;
1674} 2307}
1675#endif 2308#endif
1676 2309
1677/* initialise a loop structure, must be zero-initialised */ 2310/* initialise a loop structure, must be zero-initialised */
1678static void noinline 2311static void noinline ecb_cold
1679loop_init (EV_P_ unsigned int flags) 2312loop_init (EV_P_ unsigned int flags) EV_THROW
1680{ 2313{
1681 if (!backend) 2314 if (!backend)
1682 { 2315 {
1683 origflags = flags; 2316 origflags = flags;
1684 2317
… …
1711 if (!(flags & EVFLAG_NOENV) 2344 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure () 2345 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS")) 2346 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS")); 2347 flags = atoi (getenv ("LIBEV_FLAGS"));
1715 2348
1716 ev_rt_now = ev_time (); 2349 ev_rt_now = ev_time ();
1717 mn_now = get_clock (); 2350 mn_now = get_clock ();
1718 now_floor = mn_now; 2351 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now; 2352 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API 2353#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending; 2354 invoke_cb = ev_invoke_pending;
1722#endif 2355#endif
1723 2356
1724 io_blocktime = 0.; 2357 io_blocktime = 0.;
1725 timeout_blocktime = 0.; 2358 timeout_blocktime = 0.;
1726 backend = 0; 2359 backend = 0;
1727 backend_fd = -1; 2360 backend_fd = -1;
1728 sig_pending = 0; 2361 sig_pending = 0;
1729#if EV_ASYNC_ENABLE 2362#if EV_ASYNC_ENABLE
1730 async_pending = 0; 2363 async_pending = 0;
1731#endif 2364#endif
2365 pipe_write_skipped = 0;
2366 pipe_write_wanted = 0;
2367 evpipe [0] = -1;
2368 evpipe [1] = -1;
1732#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2370 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif 2371#endif
1735#if EV_USE_SIGNALFD 2372#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2373 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif 2374#endif
1738 2375
1739 if (!(flags & EVBACKEND_MASK)) 2376 if (!(flags & EVBACKEND_MASK))
1740 flags |= ev_recommended_backends (); 2377 flags |= ev_recommended_backends ();
1741 2378
… …
1766#endif 2403#endif
1767 } 2404 }
1768} 2405}
1769 2406
1770/* free up a loop structure */ 2407/* free up a loop structure */
1771void 2408void ecb_cold
1772ev_loop_destroy (EV_P) 2409ev_loop_destroy (EV_P)
1773{ 2410{
1774 int i; 2411 int i;
1775 2412
1776#if EV_MULTIPLICITY 2413#if EV_MULTIPLICITY
… …
1787 EV_INVOKE_PENDING; 2424 EV_INVOKE_PENDING;
1788 } 2425 }
1789#endif 2426#endif
1790 2427
1791#if EV_CHILD_ENABLE 2428#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev)) 2429 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1793 { 2430 {
1794 ev_ref (EV_A); /* child watcher */ 2431 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev); 2432 ev_signal_stop (EV_A_ &childev);
1796 } 2433 }
1797#endif 2434#endif
… …
1799 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1800 { 2437 {
1801 /*ev_ref (EV_A);*/ 2438 /*ev_ref (EV_A);*/
1802 /*ev_io_stop (EV_A_ &pipe_w);*/ 2439 /*ev_io_stop (EV_A_ &pipe_w);*/
1803 2440
1804#if EV_USE_EVENTFD
1805 if (evfd >= 0)
1806 close (evfd);
1807#endif
1808
1809 if (evpipe [0] >= 0)
1810 {
1811 EV_WIN32_CLOSE_FD (evpipe [0]); 2441 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]); 2442 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1813 }
1814 } 2443 }
1815 2444
1816#if EV_USE_SIGNALFD 2445#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w)) 2446 if (ev_is_active (&sigfd_w))
1818 close (sigfd); 2447 close (sigfd);
… …
1904#endif 2533#endif
1905#if EV_USE_INOTIFY 2534#if EV_USE_INOTIFY
1906 infy_fork (EV_A); 2535 infy_fork (EV_A);
1907#endif 2536#endif
1908 2537
2538#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1909 if (ev_is_active (&pipe_w)) 2539 if (ev_is_active (&pipe_w))
1910 { 2540 {
1911 /* this "locks" the handlers against writing to the pipe */ 2541 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1912 /* while we modify the fd vars */
1913 sig_pending = 1;
1914#if EV_ASYNC_ENABLE
1915 async_pending = 1;
1916#endif
1917 2542
1918 ev_ref (EV_A); 2543 ev_ref (EV_A);
1919 ev_io_stop (EV_A_ &pipe_w); 2544 ev_io_stop (EV_A_ &pipe_w);
1920 2545
1921#if EV_USE_EVENTFD
1922 if (evfd >= 0)
1923 close (evfd);
1924#endif
1925
1926 if (evpipe [0] >= 0) 2546 if (evpipe [0] >= 0)
1927 {
1928 EV_WIN32_CLOSE_FD (evpipe [0]); 2547 EV_WIN32_CLOSE_FD (evpipe [0]);
1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1930 }
1931 2548
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1933 evpipe_init (EV_A); 2549 evpipe_init (EV_A);
1934 /* now iterate over everything, in case we missed something */ 2550 /* iterate over everything, in case we missed something before */
1935 pipecb (EV_A_ &pipe_w, EV_READ); 2551 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1936#endif
1937 } 2552 }
2553#endif
1938 2554
1939 postfork = 0; 2555 postfork = 0;
1940} 2556}
1941 2557
1942#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1943 2559
1944struct ev_loop * 2560struct ev_loop * ecb_cold
1945ev_loop_new (unsigned int flags) 2561ev_loop_new (unsigned int flags) EV_THROW
1946{ 2562{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2563 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948 2564
1949 memset (EV_A, 0, sizeof (struct ev_loop)); 2565 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags); 2566 loop_init (EV_A_ flags);
… …
1957} 2573}
1958 2574
1959#endif /* multiplicity */ 2575#endif /* multiplicity */
1960 2576
1961#if EV_VERIFY 2577#if EV_VERIFY
1962static void noinline 2578static void noinline ecb_cold
1963verify_watcher (EV_P_ W w) 2579verify_watcher (EV_P_ W w)
1964{ 2580{
1965 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));
1966 2582
1967 if (w->pending) 2583 if (w->pending)
1968 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));
1969} 2585}
1970 2586
1971static void noinline 2587static void noinline ecb_cold
1972verify_heap (EV_P_ ANHE *heap, int N) 2588verify_heap (EV_P_ ANHE *heap, int N)
1973{ 2589{
1974 int i; 2590 int i;
1975 2591
1976 for (i = HEAP0; i < N + HEAP0; ++i) 2592 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1981 2597
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2598 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 } 2599 }
1984} 2600}
1985 2601
1986static void noinline 2602static void noinline ecb_cold
1987array_verify (EV_P_ W *ws, int cnt) 2603array_verify (EV_P_ W *ws, int cnt)
1988{ 2604{
1989 while (cnt--) 2605 while (cnt--)
1990 { 2606 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2607 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1993 } 2609 }
1994} 2610}
1995#endif 2611#endif
1996 2612
1997#if EV_FEATURE_API 2613#if EV_FEATURE_API
1998void 2614void ecb_cold
1999ev_verify (EV_P) 2615ev_verify (EV_P) EV_THROW
2000{ 2616{
2001#if EV_VERIFY 2617#if EV_VERIFY
2002 int i; 2618 int i;
2003 WL w; 2619 WL w, w2;
2004 2620
2005 assert (activecnt >= -1); 2621 assert (activecnt >= -1);
2006 2622
2007 assert (fdchangemax >= fdchangecnt); 2623 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i) 2624 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2625 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010 2626
2011 assert (anfdmax >= 0); 2627 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i) 2628 for (i = 0; i < anfdmax; ++i)
2629 {
2630 int j = 0;
2631
2013 for (w = anfds [i].head; w; w = w->next) 2632 for (w = w2 = anfds [i].head; w; w = w->next)
2014 { 2633 {
2015 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
2016 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));
2017 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));
2018 } 2644 }
2645 }
2019 2646
2020 assert (timermax >= timercnt); 2647 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt); 2648 verify_heap (EV_A_ timers, timercnt);
2022 2649
2023#if EV_PERIODIC_ENABLE 2650#if EV_PERIODIC_ENABLE
… …
2069#endif 2696#endif
2070} 2697}
2071#endif 2698#endif
2072 2699
2073#if EV_MULTIPLICITY 2700#if EV_MULTIPLICITY
2074struct ev_loop * 2701struct ev_loop * ecb_cold
2075#else 2702#else
2076int 2703int
2077#endif 2704#endif
2078ev_default_loop (unsigned int flags) 2705ev_default_loop (unsigned int flags) EV_THROW
2079{ 2706{
2080 if (!ev_default_loop_ptr) 2707 if (!ev_default_loop_ptr)
2081 { 2708 {
2082#if EV_MULTIPLICITY 2709#if EV_MULTIPLICITY
2083 EV_P = ev_default_loop_ptr = &default_loop_struct; 2710 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2102 2729
2103 return ev_default_loop_ptr; 2730 return ev_default_loop_ptr;
2104} 2731}
2105 2732
2106void 2733void
2107ev_loop_fork (EV_P) 2734ev_loop_fork (EV_P) EV_THROW
2108{ 2735{
2109 postfork = 1; /* must be in line with ev_default_fork */ 2736 postfork = 1;
2110} 2737}
2111 2738
2112/*****************************************************************************/ 2739/*****************************************************************************/
2113 2740
2114void 2741void
… …
2116{ 2743{
2117 EV_CB_INVOKE ((W)w, revents); 2744 EV_CB_INVOKE ((W)w, revents);
2118} 2745}
2119 2746
2120unsigned int 2747unsigned int
2121ev_pending_count (EV_P) 2748ev_pending_count (EV_P) EV_THROW
2122{ 2749{
2123 int pri; 2750 int pri;
2124 unsigned int count = 0; 2751 unsigned int count = 0;
2125 2752
2126 for (pri = NUMPRI; pri--; ) 2753 for (pri = NUMPRI; pri--; )
… …
2130} 2757}
2131 2758
2132void noinline 2759void noinline
2133ev_invoke_pending (EV_P) 2760ev_invoke_pending (EV_P)
2134{ 2761{
2135 int pri; 2762 pendingpri = NUMPRI;
2136 2763
2137 for (pri = NUMPRI; pri--; ) 2764 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2765 {
2766 --pendingpri;
2767
2138 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
2139 { 2769 {
2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2141 2771
2142 p->w->pending = 0; 2772 p->w->pending = 0;
2143 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2144 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2145 } 2775 }
2776 }
2146} 2777}
2147 2778
2148#if EV_IDLE_ENABLE 2779#if EV_IDLE_ENABLE
2149/* make idle watchers pending. this handles the "call-idle */ 2780/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */ 2781/* only when higher priorities are idle" logic */
… …
2208 } 2839 }
2209} 2840}
2210 2841
2211#if EV_PERIODIC_ENABLE 2842#if EV_PERIODIC_ENABLE
2212 2843
2213inline_speed void 2844static void noinline
2214periodic_recalc (EV_P_ ev_periodic *w) 2845periodic_recalc (EV_P_ ev_periodic *w)
2215{ 2846{
2216 /* TODO: use slow but potentially more correct incremental algo, */ 2847 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217 /* also do not rely on ceil */ 2848 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2849
2850 /* the above almost always errs on the low side */
2851 while (at <= ev_rt_now)
2852 {
2853 ev_tstamp nat = at + w->interval;
2854
2855 /* when resolution fails us, we use ev_rt_now */
2856 if (expect_false (nat == at))
2857 {
2858 at = ev_rt_now;
2859 break;
2860 }
2861
2862 at = nat;
2863 }
2864
2865 ev_at (w) = at;
2219} 2866}
2220 2867
2221/* make periodics pending */ 2868/* make periodics pending */
2222inline_size void 2869inline_size void
2223periodics_reify (EV_P) 2870periodics_reify (EV_P)
2224{ 2871{
2225 EV_FREQUENT_CHECK; 2872 EV_FREQUENT_CHECK;
2226 2873
2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2228 { 2875 {
2229 int feed_count = 0;
2230
2231 do 2876 do
2232 { 2877 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2878 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234 2879
2235 /*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)));*/
… …
2245 downheap (periodics, periodiccnt, HEAP0); 2890 downheap (periodics, periodiccnt, HEAP0);
2246 } 2891 }
2247 else if (w->interval) 2892 else if (w->interval)
2248 { 2893 {
2249 periodic_recalc (EV_A_ w); 2894 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]); 2895 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0); 2896 downheap (periodics, periodiccnt, HEAP0);
2266 } 2897 }
2267 else 2898 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2276 } 2907 }
2277} 2908}
2278 2909
2279/* simply recalculate all periodics */ 2910/* simply recalculate all periodics */
2280/* 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? */
2281static void noinline 2912static void noinline ecb_cold
2282periodics_reschedule (EV_P) 2913periodics_reschedule (EV_P)
2283{ 2914{
2284 int i; 2915 int i;
2285 2916
2286 /* adjust periodics after time jump */ 2917 /* adjust periodics after time jump */
… …
2299 reheap (periodics, periodiccnt); 2930 reheap (periodics, periodiccnt);
2300} 2931}
2301#endif 2932#endif
2302 2933
2303/* adjust all timers by a given offset */ 2934/* adjust all timers by a given offset */
2304static void noinline 2935static void noinline ecb_cold
2305timers_reschedule (EV_P_ ev_tstamp adjust) 2936timers_reschedule (EV_P_ ev_tstamp adjust)
2306{ 2937{
2307 int i; 2938 int i;
2308 2939
2309 for (i = 0; i < timercnt; ++i) 2940 for (i = 0; i < timercnt; ++i)
… …
2346 * doesn't hurt either as we only do this on time-jumps or 2977 * doesn't hurt either as we only do this on time-jumps or
2347 * in the unlikely event of having been preempted here. 2978 * in the unlikely event of having been preempted here.
2348 */ 2979 */
2349 for (i = 4; --i; ) 2980 for (i = 4; --i; )
2350 { 2981 {
2982 ev_tstamp diff;
2351 rtmn_diff = ev_rt_now - mn_now; 2983 rtmn_diff = ev_rt_now - mn_now;
2352 2984
2985 diff = odiff - rtmn_diff;
2986
2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2987 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354 return; /* all is well */ 2988 return; /* all is well */
2355 2989
2356 ev_rt_now = ev_time (); 2990 ev_rt_now = ev_time ();
2357 mn_now = get_clock (); 2991 mn_now = get_clock ();
2358 now_floor = mn_now; 2992 now_floor = mn_now;
… …
2380 3014
2381 mn_now = ev_rt_now; 3015 mn_now = ev_rt_now;
2382 } 3016 }
2383} 3017}
2384 3018
2385void 3019int
2386ev_run (EV_P_ int flags) 3020ev_run (EV_P_ int flags)
2387{ 3021{
2388#if EV_FEATURE_API 3022#if EV_FEATURE_API
2389 ++loop_depth; 3023 ++loop_depth;
2390#endif 3024#endif
… …
2448 ev_tstamp prev_mn_now = mn_now; 3082 ev_tstamp prev_mn_now = mn_now;
2449 3083
2450 /* update time to cancel out callback processing overhead */ 3084 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100); 3085 time_update (EV_A_ 1e100);
2452 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
2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3092 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2454 { 3093 {
2455 waittime = MAX_BLOCKTIME; 3094 waittime = MAX_BLOCKTIME;
2456 3095
2457 if (timercnt) 3096 if (timercnt)
2458 { 3097 {
2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3098 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460 if (waittime > to) waittime = to; 3099 if (waittime > to) waittime = to;
2461 } 3100 }
2462 3101
2463#if EV_PERIODIC_ENABLE 3102#if EV_PERIODIC_ENABLE
2464 if (periodiccnt) 3103 if (periodiccnt)
2465 { 3104 {
2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3105 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467 if (waittime > to) waittime = to; 3106 if (waittime > to) waittime = to;
2468 } 3107 }
2469#endif 3108#endif
2470 3109
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3110 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime)) 3111 if (expect_false (waittime < timeout_blocktime))
2473 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;
2474 3118
2475 /* extra check because io_blocktime is commonly 0 */ 3119 /* extra check because io_blocktime is commonly 0 */
2476 if (expect_false (io_blocktime)) 3120 if (expect_false (io_blocktime))
2477 { 3121 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3122 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479 3123
2480 if (sleeptime > waittime - backend_fudge) 3124 if (sleeptime > waittime - backend_mintime)
2481 sleeptime = waittime - backend_fudge; 3125 sleeptime = waittime - backend_mintime;
2482 3126
2483 if (expect_true (sleeptime > 0.)) 3127 if (expect_true (sleeptime > 0.))
2484 { 3128 {
2485 ev_sleep (sleeptime); 3129 ev_sleep (sleeptime);
2486 waittime -= sleeptime; 3130 waittime -= sleeptime;
… …
2493#endif 3137#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3138 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495 backend_poll (EV_A_ waittime); 3139 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3140 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497 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
2498 /* update ev_rt_now, do magic */ 3152 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime); 3153 time_update (EV_A_ waittime + sleeptime);
2500 } 3154 }
2501 3155
2502 /* queue pending timers and reschedule them */ 3156 /* queue pending timers and reschedule them */
… …
2528 loop_done = EVBREAK_CANCEL; 3182 loop_done = EVBREAK_CANCEL;
2529 3183
2530#if EV_FEATURE_API 3184#if EV_FEATURE_API
2531 --loop_depth; 3185 --loop_depth;
2532#endif 3186#endif
3187
3188 return activecnt;
2533} 3189}
2534 3190
2535void 3191void
2536ev_break (EV_P_ int how) 3192ev_break (EV_P_ int how) EV_THROW
2537{ 3193{
2538 loop_done = how; 3194 loop_done = how;
2539} 3195}
2540 3196
2541void 3197void
2542ev_ref (EV_P) 3198ev_ref (EV_P) EV_THROW
2543{ 3199{
2544 ++activecnt; 3200 ++activecnt;
2545} 3201}
2546 3202
2547void 3203void
2548ev_unref (EV_P) 3204ev_unref (EV_P) EV_THROW
2549{ 3205{
2550 --activecnt; 3206 --activecnt;
2551} 3207}
2552 3208
2553void 3209void
2554ev_now_update (EV_P) 3210ev_now_update (EV_P) EV_THROW
2555{ 3211{
2556 time_update (EV_A_ 1e100); 3212 time_update (EV_A_ 1e100);
2557} 3213}
2558 3214
2559void 3215void
2560ev_suspend (EV_P) 3216ev_suspend (EV_P) EV_THROW
2561{ 3217{
2562 ev_now_update (EV_A); 3218 ev_now_update (EV_A);
2563} 3219}
2564 3220
2565void 3221void
2566ev_resume (EV_P) 3222ev_resume (EV_P) EV_THROW
2567{ 3223{
2568 ev_tstamp mn_prev = mn_now; 3224 ev_tstamp mn_prev = mn_now;
2569 3225
2570 ev_now_update (EV_A); 3226 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev); 3227 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2610 w->pending = 0; 3266 w->pending = 0;
2611 } 3267 }
2612} 3268}
2613 3269
2614int 3270int
2615ev_clear_pending (EV_P_ void *w) 3271ev_clear_pending (EV_P_ void *w) EV_THROW
2616{ 3272{
2617 W w_ = (W)w; 3273 W w_ = (W)w;
2618 int pending = w_->pending; 3274 int pending = w_->pending;
2619 3275
2620 if (expect_true (pending)) 3276 if (expect_true (pending))
… …
2653} 3309}
2654 3310
2655/*****************************************************************************/ 3311/*****************************************************************************/
2656 3312
2657void noinline 3313void noinline
2658ev_io_start (EV_P_ ev_io *w) 3314ev_io_start (EV_P_ ev_io *w) EV_THROW
2659{ 3315{
2660 int fd = w->fd; 3316 int fd = w->fd;
2661 3317
2662 if (expect_false (ev_is_active (w))) 3318 if (expect_false (ev_is_active (w)))
2663 return; 3319 return;
… …
2669 3325
2670 ev_start (EV_A_ (W)w, 1); 3326 ev_start (EV_A_ (W)w, 1);
2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3327 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2672 wlist_add (&anfds[fd].head, (WL)w); 3328 wlist_add (&anfds[fd].head, (WL)w);
2673 3329
3330 /* common bug, apparently */
3331 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3332
2674 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);
2675 w->events &= ~EV__IOFDSET; 3334 w->events &= ~EV__IOFDSET;
2676 3335
2677 EV_FREQUENT_CHECK; 3336 EV_FREQUENT_CHECK;
2678} 3337}
2679 3338
2680void noinline 3339void noinline
2681ev_io_stop (EV_P_ ev_io *w) 3340ev_io_stop (EV_P_ ev_io *w) EV_THROW
2682{ 3341{
2683 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2685 return; 3344 return;
2686 3345
… …
2695 3354
2696 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
2697} 3356}
2698 3357
2699void noinline 3358void noinline
2700ev_timer_start (EV_P_ ev_timer *w) 3359ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2701{ 3360{
2702 if (expect_false (ev_is_active (w))) 3361 if (expect_false (ev_is_active (w)))
2703 return; 3362 return;
2704 3363
2705 ev_at (w) += mn_now; 3364 ev_at (w) += mn_now;
… …
2719 3378
2720 /*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));*/
2721} 3380}
2722 3381
2723void noinline 3382void noinline
2724ev_timer_stop (EV_P_ ev_timer *w) 3383ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2725{ 3384{
2726 clear_pending (EV_A_ (W)w); 3385 clear_pending (EV_A_ (W)w);
2727 if (expect_false (!ev_is_active (w))) 3386 if (expect_false (!ev_is_active (w)))
2728 return; 3387 return;
2729 3388
… …
2749 3408
2750 EV_FREQUENT_CHECK; 3409 EV_FREQUENT_CHECK;
2751} 3410}
2752 3411
2753void noinline 3412void noinline
2754ev_timer_again (EV_P_ ev_timer *w) 3413ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2755{ 3414{
2756 EV_FREQUENT_CHECK; 3415 EV_FREQUENT_CHECK;
3416
3417 clear_pending (EV_A_ (W)w);
2757 3418
2758 if (ev_is_active (w)) 3419 if (ev_is_active (w))
2759 { 3420 {
2760 if (w->repeat) 3421 if (w->repeat)
2761 { 3422 {
… …
2774 3435
2775 EV_FREQUENT_CHECK; 3436 EV_FREQUENT_CHECK;
2776} 3437}
2777 3438
2778ev_tstamp 3439ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w) 3440ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2780{ 3441{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3442 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782} 3443}
2783 3444
2784#if EV_PERIODIC_ENABLE 3445#if EV_PERIODIC_ENABLE
2785void noinline 3446void noinline
2786ev_periodic_start (EV_P_ ev_periodic *w) 3447ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2787{ 3448{
2788 if (expect_false (ev_is_active (w))) 3449 if (expect_false (ev_is_active (w)))
2789 return; 3450 return;
2790 3451
2791 if (w->reschedule_cb) 3452 if (w->reschedule_cb)
… …
2811 3472
2812 /*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));*/
2813} 3474}
2814 3475
2815void noinline 3476void noinline
2816ev_periodic_stop (EV_P_ ev_periodic *w) 3477ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2817{ 3478{
2818 clear_pending (EV_A_ (W)w); 3479 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 3480 if (expect_false (!ev_is_active (w)))
2820 return; 3481 return;
2821 3482
… …
2839 3500
2840 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2841} 3502}
2842 3503
2843void noinline 3504void noinline
2844ev_periodic_again (EV_P_ ev_periodic *w) 3505ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2845{ 3506{
2846 /* TODO: use adjustheap and recalculation */ 3507 /* TODO: use adjustheap and recalculation */
2847 ev_periodic_stop (EV_A_ w); 3508 ev_periodic_stop (EV_A_ w);
2848 ev_periodic_start (EV_A_ w); 3509 ev_periodic_start (EV_A_ w);
2849} 3510}
… …
2854#endif 3515#endif
2855 3516
2856#if EV_SIGNAL_ENABLE 3517#if EV_SIGNAL_ENABLE
2857 3518
2858void noinline 3519void noinline
2859ev_signal_start (EV_P_ ev_signal *w) 3520ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2860{ 3521{
2861 if (expect_false (ev_is_active (w))) 3522 if (expect_false (ev_is_active (w)))
2862 return; 3523 return;
2863 3524
2864 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));
… …
2866#if EV_MULTIPLICITY 3527#if EV_MULTIPLICITY
2867 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",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3529 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2869 3530
2870 signals [w->signum - 1].loop = EV_A; 3531 signals [w->signum - 1].loop = EV_A;
3532 ECB_MEMORY_FENCE_RELEASE;
2871#endif 3533#endif
2872 3534
2873 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2874 3536
2875#if EV_USE_SIGNALFD 3537#if EV_USE_SIGNALFD
… …
2935 3597
2936 EV_FREQUENT_CHECK; 3598 EV_FREQUENT_CHECK;
2937} 3599}
2938 3600
2939void noinline 3601void noinline
2940ev_signal_stop (EV_P_ ev_signal *w) 3602ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2941{ 3603{
2942 clear_pending (EV_A_ (W)w); 3604 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 3605 if (expect_false (!ev_is_active (w)))
2944 return; 3606 return;
2945 3607
… …
2976#endif 3638#endif
2977 3639
2978#if EV_CHILD_ENABLE 3640#if EV_CHILD_ENABLE
2979 3641
2980void 3642void
2981ev_child_start (EV_P_ ev_child *w) 3643ev_child_start (EV_P_ ev_child *w) EV_THROW
2982{ 3644{
2983#if EV_MULTIPLICITY 3645#if EV_MULTIPLICITY
2984 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));
2985#endif 3647#endif
2986 if (expect_false (ev_is_active (w))) 3648 if (expect_false (ev_is_active (w)))
… …
2993 3655
2994 EV_FREQUENT_CHECK; 3656 EV_FREQUENT_CHECK;
2995} 3657}
2996 3658
2997void 3659void
2998ev_child_stop (EV_P_ ev_child *w) 3660ev_child_stop (EV_P_ ev_child *w) EV_THROW
2999{ 3661{
3000 clear_pending (EV_A_ (W)w); 3662 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 3663 if (expect_false (!ev_is_active (w)))
3002 return; 3664 return;
3003 3665
… …
3078 if (!pend || pend == path) 3740 if (!pend || pend == path)
3079 break; 3741 break;
3080 3742
3081 *pend = 0; 3743 *pend = 0;
3082 w->wd = inotify_add_watch (fs_fd, path, mask); 3744 w->wd = inotify_add_watch (fs_fd, path, mask);
3083 } 3745 }
3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3746 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3085 } 3747 }
3086 } 3748 }
3087 3749
3088 if (w->wd >= 0) 3750 if (w->wd >= 0)
… …
3155 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3817 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len; 3818 ofs += sizeof (struct inotify_event) + ev->len;
3157 } 3819 }
3158} 3820}
3159 3821
3160inline_size void 3822inline_size void ecb_cold
3161ev_check_2625 (EV_P) 3823ev_check_2625 (EV_P)
3162{ 3824{
3163 /* kernels < 2.6.25 are borked 3825 /* kernels < 2.6.25 are borked
3164 * 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
3165 */ 3827 */
… …
3170} 3832}
3171 3833
3172inline_size int 3834inline_size int
3173infy_newfd (void) 3835infy_newfd (void)
3174{ 3836{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3837#if defined IN_CLOEXEC && defined IN_NONBLOCK
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3838 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0) 3839 if (fd >= 0)
3178 return fd; 3840 return fd;
3179#endif 3841#endif
3180 return inotify_init (); 3842 return inotify_init ();
… …
3255#else 3917#else
3256# define EV_LSTAT(p,b) lstat (p, b) 3918# define EV_LSTAT(p,b) lstat (p, b)
3257#endif 3919#endif
3258 3920
3259void 3921void
3260ev_stat_stat (EV_P_ ev_stat *w) 3922ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3261{ 3923{
3262 if (lstat (w->path, &w->attr) < 0) 3924 if (lstat (w->path, &w->attr) < 0)
3263 w->attr.st_nlink = 0; 3925 w->attr.st_nlink = 0;
3264 else if (!w->attr.st_nlink) 3926 else if (!w->attr.st_nlink)
3265 w->attr.st_nlink = 1; 3927 w->attr.st_nlink = 1;
… …
3304 ev_feed_event (EV_A_ w, EV_STAT); 3966 ev_feed_event (EV_A_ w, EV_STAT);
3305 } 3967 }
3306} 3968}
3307 3969
3308void 3970void
3309ev_stat_start (EV_P_ ev_stat *w) 3971ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3310{ 3972{
3311 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
3312 return; 3974 return;
3313 3975
3314 ev_stat_stat (EV_A_ w); 3976 ev_stat_stat (EV_A_ w);
… …
3335 3997
3336 EV_FREQUENT_CHECK; 3998 EV_FREQUENT_CHECK;
3337} 3999}
3338 4000
3339void 4001void
3340ev_stat_stop (EV_P_ ev_stat *w) 4002ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3341{ 4003{
3342 clear_pending (EV_A_ (W)w); 4004 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 4005 if (expect_false (!ev_is_active (w)))
3344 return; 4006 return;
3345 4007
… …
3361} 4023}
3362#endif 4024#endif
3363 4025
3364#if EV_IDLE_ENABLE 4026#if EV_IDLE_ENABLE
3365void 4027void
3366ev_idle_start (EV_P_ ev_idle *w) 4028ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3367{ 4029{
3368 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
3369 return; 4031 return;
3370 4032
3371 pri_adjust (EV_A_ (W)w); 4033 pri_adjust (EV_A_ (W)w);
… …
3384 4046
3385 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
3386} 4048}
3387 4049
3388void 4050void
3389ev_idle_stop (EV_P_ ev_idle *w) 4051ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3390{ 4052{
3391 clear_pending (EV_A_ (W)w); 4053 clear_pending (EV_A_ (W)w);
3392 if (expect_false (!ev_is_active (w))) 4054 if (expect_false (!ev_is_active (w)))
3393 return; 4055 return;
3394 4056
… …
3408} 4070}
3409#endif 4071#endif
3410 4072
3411#if EV_PREPARE_ENABLE 4073#if EV_PREPARE_ENABLE
3412void 4074void
3413ev_prepare_start (EV_P_ ev_prepare *w) 4075ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3414{ 4076{
3415 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
3416 return; 4078 return;
3417 4079
3418 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
… …
3423 4085
3424 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3425} 4087}
3426 4088
3427void 4089void
3428ev_prepare_stop (EV_P_ ev_prepare *w) 4090ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3429{ 4091{
3430 clear_pending (EV_A_ (W)w); 4092 clear_pending (EV_A_ (W)w);
3431 if (expect_false (!ev_is_active (w))) 4093 if (expect_false (!ev_is_active (w)))
3432 return; 4094 return;
3433 4095
… …
3446} 4108}
3447#endif 4109#endif
3448 4110
3449#if EV_CHECK_ENABLE 4111#if EV_CHECK_ENABLE
3450void 4112void
3451ev_check_start (EV_P_ ev_check *w) 4113ev_check_start (EV_P_ ev_check *w) EV_THROW
3452{ 4114{
3453 if (expect_false (ev_is_active (w))) 4115 if (expect_false (ev_is_active (w)))
3454 return; 4116 return;
3455 4117
3456 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
… …
3461 4123
3462 EV_FREQUENT_CHECK; 4124 EV_FREQUENT_CHECK;
3463} 4125}
3464 4126
3465void 4127void
3466ev_check_stop (EV_P_ ev_check *w) 4128ev_check_stop (EV_P_ ev_check *w) EV_THROW
3467{ 4129{
3468 clear_pending (EV_A_ (W)w); 4130 clear_pending (EV_A_ (W)w);
3469 if (expect_false (!ev_is_active (w))) 4131 if (expect_false (!ev_is_active (w)))
3470 return; 4132 return;
3471 4133
… …
3484} 4146}
3485#endif 4147#endif
3486 4148
3487#if EV_EMBED_ENABLE 4149#if EV_EMBED_ENABLE
3488void noinline 4150void noinline
3489ev_embed_sweep (EV_P_ ev_embed *w) 4151ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3490{ 4152{
3491 ev_run (w->other, EVRUN_NOWAIT); 4153 ev_run (w->other, EVRUN_NOWAIT);
3492} 4154}
3493 4155
3494static void 4156static void
… …
3542 ev_idle_stop (EV_A_ idle); 4204 ev_idle_stop (EV_A_ idle);
3543} 4205}
3544#endif 4206#endif
3545 4207
3546void 4208void
3547ev_embed_start (EV_P_ ev_embed *w) 4209ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3548{ 4210{
3549 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
3550 return; 4212 return;
3551 4213
3552 { 4214 {
… …
3573 4235
3574 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3575} 4237}
3576 4238
3577void 4239void
3578ev_embed_stop (EV_P_ ev_embed *w) 4240ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3579{ 4241{
3580 clear_pending (EV_A_ (W)w); 4242 clear_pending (EV_A_ (W)w);
3581 if (expect_false (!ev_is_active (w))) 4243 if (expect_false (!ev_is_active (w)))
3582 return; 4244 return;
3583 4245
… …
3593} 4255}
3594#endif 4256#endif
3595 4257
3596#if EV_FORK_ENABLE 4258#if EV_FORK_ENABLE
3597void 4259void
3598ev_fork_start (EV_P_ ev_fork *w) 4260ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3599{ 4261{
3600 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3601 return; 4263 return;
3602 4264
3603 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
… …
3608 4270
3609 EV_FREQUENT_CHECK; 4271 EV_FREQUENT_CHECK;
3610} 4272}
3611 4273
3612void 4274void
3613ev_fork_stop (EV_P_ ev_fork *w) 4275ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3614{ 4276{
3615 clear_pending (EV_A_ (W)w); 4277 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 4278 if (expect_false (!ev_is_active (w)))
3617 return; 4279 return;
3618 4280
… …
3631} 4293}
3632#endif 4294#endif
3633 4295
3634#if EV_CLEANUP_ENABLE 4296#if EV_CLEANUP_ENABLE
3635void 4297void
3636ev_cleanup_start (EV_P_ ev_cleanup *w) 4298ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3637{ 4299{
3638 if (expect_false (ev_is_active (w))) 4300 if (expect_false (ev_is_active (w)))
3639 return; 4301 return;
3640 4302
3641 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
… …
3648 ev_unref (EV_A); 4310 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK; 4311 EV_FREQUENT_CHECK;
3650} 4312}
3651 4313
3652void 4314void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w) 4315ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3654{ 4316{
3655 clear_pending (EV_A_ (W)w); 4317 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w))) 4318 if (expect_false (!ev_is_active (w)))
3657 return; 4319 return;
3658 4320
… …
3672} 4334}
3673#endif 4335#endif
3674 4336
3675#if EV_ASYNC_ENABLE 4337#if EV_ASYNC_ENABLE
3676void 4338void
3677ev_async_start (EV_P_ ev_async *w) 4339ev_async_start (EV_P_ ev_async *w) EV_THROW
3678{ 4340{
3679 if (expect_false (ev_is_active (w))) 4341 if (expect_false (ev_is_active (w)))
3680 return; 4342 return;
3681 4343
3682 w->sent = 0; 4344 w->sent = 0;
… …
3691 4353
3692 EV_FREQUENT_CHECK; 4354 EV_FREQUENT_CHECK;
3693} 4355}
3694 4356
3695void 4357void
3696ev_async_stop (EV_P_ ev_async *w) 4358ev_async_stop (EV_P_ ev_async *w) EV_THROW
3697{ 4359{
3698 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
3700 return; 4362 return;
3701 4363
… …
3712 4374
3713 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
3714} 4376}
3715 4377
3716void 4378void
3717ev_async_send (EV_P_ ev_async *w) 4379ev_async_send (EV_P_ ev_async *w) EV_THROW
3718{ 4380{
3719 w->sent = 1; 4381 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending); 4382 evpipe_write (EV_A_ &async_pending);
3721} 4383}
3722#endif 4384#endif
… …
3759 4421
3760 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));
3761} 4423}
3762 4424
3763void 4425void
3764ev_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
3765{ 4427{
3766 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));
3767 4429
3768 if (expect_false (!once)) 4430 if (expect_false (!once))
3769 { 4431 {
… …
3790} 4452}
3791 4453
3792/*****************************************************************************/ 4454/*****************************************************************************/
3793 4455
3794#if EV_WALK_ENABLE 4456#if EV_WALK_ENABLE
3795void 4457void ecb_cold
3796ev_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
3797{ 4459{
3798 int i, j; 4460 int i, j;
3799 ev_watcher_list *wl, *wn; 4461 ev_watcher_list *wl, *wn;
3800 4462
3801 if (types & (EV_IO | EV_EMBED)) 4463 if (types & (EV_IO | EV_EMBED))
… …
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4506 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif 4507#endif
3846 4508
3847#if EV_IDLE_ENABLE 4509#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE) 4510 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; ) 4511 for (j = NUMPRI; j--; )
3850 for (i = idlecnt [j]; i--; ) 4512 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]); 4513 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif 4514#endif
3853 4515
3854#if EV_FORK_ENABLE 4516#if EV_FORK_ENABLE
… …
3907 4569
3908#if EV_MULTIPLICITY 4570#if EV_MULTIPLICITY
3909 #include "ev_wrap.h" 4571 #include "ev_wrap.h"
3910#endif 4572#endif
3911 4573
3912EV_CPP(})
3913

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