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Comparing libev/ev.c (file contents):
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC vs.
Revision 1.480 by root, Thu Feb 18 04:48:05 2016 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 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 247#endif
233/* but consider reporting it, too! :) */ 248
234# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
235#endif 251#endif
236 252
237#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 256# else
241# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
242# endif 258# endif
243#endif 259#endif
244 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
245#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 273# else
249# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
250# endif 275# endif
251#endif 276#endif
… …
338 363
339#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 366#endif
342 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* 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. */ 385/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 387# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
351# else 392# else
… …
354# endif 395# endif
355#endif 396#endif
356 397
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 399
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
368#endif 403#endif
369 404
… …
376# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
378#endif 413#endif
379 414
380#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 418# include <sys/select.h>
383# endif 419# endif
384#endif 420#endif
385 421
386#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h> 423# include <sys/statfs.h>
389# include <sys/inotify.h> 424# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
394# endif 429# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 430#endif
400 431
401#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 434# include <stdint.h>
… …
443#else 474#else
444# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
445#endif 476#endif
446 477
447/* 478/*
448 * This is used to avoid floating point rounding problems. 479 * 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. 480 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 481 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 484
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#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) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 487
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 488#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) 489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 546 #if __GNUC__
547 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
562#else
563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
581#endif
582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
656#ifndef ECB_MEMORY_FENCE
657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
658 #if __i386 || __i386__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
707 #endif
708 #endif
709#endif
710
711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
737 #elif defined _WIN32
738 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS
769 /*
770 * if you get undefined symbol references to pthread_mutex_lock,
771 * or failure to find pthread.h, then you should implement
772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
773 * OR provide pthread.h and link against the posix thread library
774 * of your system.
775 */
776 #include <pthread.h>
777 #define ECB_NEEDS_PTHREADS 1
778 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
779
780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
782 #endif
783#endif
784
785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif
788
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
791#endif
792
793/*****************************************************************************/
794
795#if ECB_CPP
796 #define ecb_inline static inline
797#elif ECB_GCC_VERSION(2,5)
798 #define ecb_inline static __inline__
799#elif ECB_C99
800 #define ecb_inline static inline
801#else
802 #define ecb_inline static
803#endif
804
805#if ECB_GCC_VERSION(3,3)
806 #define ecb_restrict __restrict__
807#elif ECB_C99
808 #define ecb_restrict restrict
809#else
810 #define ecb_restrict
811#endif
812
813typedef int ecb_bool;
814
815#define ECB_CONCAT_(a, b) a ## b
816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
817#define ECB_STRINGIFY_(a) # a
818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
820
821#define ecb_function_ ecb_inline
822
823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 841#else
467# define expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 843#endif
472#endif
473 844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
847#else
848 #define ecb_prefetch(addr,rw,locality)
849#endif
850
851/* no emulation for ecb_decltype */
852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
857 #define ecb_decltype(x) __typeof__ (x)
858#endif
859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
880#define ecb_unused ecb_attribute ((__unused__))
881#define ecb_const ecb_attribute ((__const__))
882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
895
896#if ECB_GCC_VERSION(4,3)
897 #define ecb_artificial ecb_attribute ((__artificial__))
898 #define ecb_hot ecb_attribute ((__hot__))
899 #define ecb_cold ecb_attribute ((__cold__))
900#else
901 #define ecb_artificial
902 #define ecb_hot
903 #define ecb_cold
904#endif
905
906/* put around conditional expressions if you are very sure that the */
907/* expression is mostly true or mostly false. note that these return */
908/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 909#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 910#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
911/* for compatibility to the rest of the world */
912#define ecb_likely(expr) ecb_expect_true (expr)
913#define ecb_unlikely(expr) ecb_expect_false (expr)
914
915/* count trailing zero bits and count # of one bits */
916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
923 #define ecb_ctz32(x) __builtin_ctz (x)
924 #define ecb_ctz64(x) __builtin_ctzll (x)
925 #define ecb_popcount32(x) __builtin_popcount (x)
926 /* no popcountll */
927#else
928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
929 ecb_function_ ecb_const int
930 ecb_ctz32 (uint32_t x)
931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
937 int r = 0;
938
939 x &= ~x + 1; /* this isolates the lowest bit */
940
941#if ECB_branchless_on_i386
942 r += !!(x & 0xaaaaaaaa) << 0;
943 r += !!(x & 0xcccccccc) << 1;
944 r += !!(x & 0xf0f0f0f0) << 2;
945 r += !!(x & 0xff00ff00) << 3;
946 r += !!(x & 0xffff0000) << 4;
947#else
948 if (x & 0xaaaaaaaa) r += 1;
949 if (x & 0xcccccccc) r += 2;
950 if (x & 0xf0f0f0f0) r += 4;
951 if (x & 0xff00ff00) r += 8;
952 if (x & 0xffff0000) r += 16;
953#endif
954
955 return r;
956#endif
957 }
958
959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
960 ecb_function_ ecb_const int
961 ecb_ctz64 (uint64_t x)
962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
968 int shift = x & 0xffffffff ? 0 : 32;
969 return ecb_ctz32 (x >> shift) + shift;
970#endif
971 }
972
973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
974 ecb_function_ ecb_const int
975 ecb_popcount32 (uint32_t x)
976 {
977 x -= (x >> 1) & 0x55555555;
978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
979 x = ((x >> 4) + x) & 0x0f0f0f0f;
980 x *= 0x01010101;
981
982 return x >> 24;
983 }
984
985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
993 int r = 0;
994
995 if (x >> 16) { x >>= 16; r += 16; }
996 if (x >> 8) { x >>= 8; r += 8; }
997 if (x >> 4) { x >>= 4; r += 4; }
998 if (x >> 2) { x >>= 2; r += 2; }
999 if (x >> 1) { r += 1; }
1000
1001 return r;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
1013 int r = 0;
1014
1015 if (x >> 32) { x >>= 32; r += 32; }
1016
1017 return r + ecb_ld32 (x);
1018#endif
1019 }
1020#endif
1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
1056
1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
1058/* so for this version we are lazy */
1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1060ecb_function_ ecb_const int
1061ecb_popcount64 (uint64_t x)
1062{
1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1064}
1065
1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1074
1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1083
1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1097#else
1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1099 ecb_function_ ecb_const uint16_t
1100 ecb_bswap16 (uint16_t x)
1101 {
1102 return ecb_rotl16 (x, 8);
1103 }
1104
1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1106 ecb_function_ ecb_const uint32_t
1107 ecb_bswap32 (uint32_t x)
1108 {
1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1110 }
1111
1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1113 ecb_function_ ecb_const uint64_t
1114 ecb_bswap64 (uint64_t x)
1115 {
1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1117 }
1118#endif
1119
1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1121 #define ecb_unreachable() __builtin_unreachable ()
1122#else
1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1126#endif
1127
1128/* try to tell the compiler that some condition is definitely true */
1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1130
1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1132ecb_inline ecb_const uint32_t
1133ecb_byteorder_helper (void)
1134{
1135 /* the union code still generates code under pressure in gcc, */
1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
1157}
1158
1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1163
1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1166#else
1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1168#endif
1169
1170#if ECB_CPP
1171 template<typename T>
1172 static inline T ecb_div_rd (T val, T div)
1173 {
1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1175 }
1176 template<typename T>
1177 static inline T ecb_div_ru (T val, T div)
1178 {
1179 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1180 }
1181#else
1182 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1183 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1184#endif
1185
1186#if ecb_cplusplus_does_not_suck
1187 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1188 template<typename T, int N>
1189 static inline int ecb_array_length (const T (&arr)[N])
1190 {
1191 return N;
1192 }
1193#else
1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1195#endif
1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
1502#endif
1503
1504/* ECB.H END */
1505
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* if your architecture doesn't need memory fences, e.g. because it is
1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1510 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences.
1513 */
1514# error "memory fences not defined for your architecture, please report"
1515#endif
1516
1517#ifndef ECB_MEMORY_FENCE
1518# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif
1522
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
476#define inline_size static inline 1527#define inline_size ecb_inline
477 1528
478#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
479# define inline_speed static inline 1530# define inline_speed ecb_inline
480#else 1531#else
481# define inline_speed static noinline 1532# define inline_speed noinline static
482#endif 1533#endif
483 1534
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1536
486#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
523# include "ev_win32.c" 1574# include "ev_win32.c"
524#endif 1575#endif
525 1576
526/*****************************************************************************/ 1577/*****************************************************************************/
527 1578
1579/* define a suitable floor function (only used by periodics atm) */
1580
1581#if EV_USE_FLOOR
1582# include <math.h>
1583# define ev_floor(v) floor (v)
1584#else
1585
1586#include <float.h>
1587
1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1590static ev_tstamp
1591ev_floor (ev_tstamp v)
1592{
1593 /* the choice of shift factor is not terribly important */
1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1596#else
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1598#endif
1599
1600 /* argument too large for an unsigned long? */
1601 if (expect_false (v >= shift))
1602 {
1603 ev_tstamp f;
1604
1605 if (v == v - 1.)
1606 return v; /* very large number */
1607
1608 f = shift * ev_floor (v * (1. / shift));
1609 return f + ev_floor (v - f);
1610 }
1611
1612 /* special treatment for negative args? */
1613 if (expect_false (v < 0.))
1614 {
1615 ev_tstamp f = -ev_floor (-v);
1616
1617 return f - (f == v ? 0 : 1);
1618 }
1619
1620 /* fits into an unsigned long */
1621 return (unsigned long)v;
1622}
1623
1624#endif
1625
1626/*****************************************************************************/
1627
1628#ifdef __linux
1629# include <sys/utsname.h>
1630#endif
1631
1632noinline ecb_cold
1633static unsigned int
1634ev_linux_version (void)
1635{
1636#ifdef __linux
1637 unsigned int v = 0;
1638 struct utsname buf;
1639 int i;
1640 char *p = buf.release;
1641
1642 if (uname (&buf))
1643 return 0;
1644
1645 for (i = 3+1; --i; )
1646 {
1647 unsigned int c = 0;
1648
1649 for (;;)
1650 {
1651 if (*p >= '0' && *p <= '9')
1652 c = c * 10 + *p++ - '0';
1653 else
1654 {
1655 p += *p == '.';
1656 break;
1657 }
1658 }
1659
1660 v = (v << 8) | c;
1661 }
1662
1663 return v;
1664#else
1665 return 0;
1666#endif
1667}
1668
1669/*****************************************************************************/
1670
528#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
529static void noinline 1672noinline ecb_cold
1673static void
530ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
531{ 1675{
532 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
533} 1677}
534#endif 1678#endif
535 1679
536static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
537 1681
1682ecb_cold
538void 1683void
539ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
540{ 1685{
541 syserr_cb = cb; 1686 syserr_cb = cb;
542} 1687}
543 1688
544static void noinline 1689noinline ecb_cold
1690static void
545ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
546{ 1692{
547 if (!msg) 1693 if (!msg)
548 msg = "(libev) system error"; 1694 msg = "(libev) system error";
549 1695
550 if (syserr_cb) 1696 if (syserr_cb)
551 syserr_cb (msg); 1697 syserr_cb (msg);
552 else 1698 else
553 { 1699 {
554#if EV_AVOID_STDIO 1700#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg); 1701 ev_printerr (msg);
558 ev_printerr (": "); 1702 ev_printerr (": ");
559 ev_printerr (err); 1703 ev_printerr (strerror (errno));
560 ev_printerr ("\n"); 1704 ev_printerr ("\n");
561#else 1705#else
562 perror (msg); 1706 perror (msg);
563#endif 1707#endif
564 abort (); 1708 abort ();
565 } 1709 }
566} 1710}
567 1711
568static void * 1712static void *
569ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
570{ 1714{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
574 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
575 * implement realloc (x, 0) (as required by both ansi c-89 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
576 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
577 */ 1720 */
578 1721
579 if (size) 1722 if (size)
580 return realloc (ptr, size); 1723 return realloc (ptr, size);
581 1724
582 free (ptr); 1725 free (ptr);
583 return 0; 1726 return 0;
584#endif
585} 1727}
586 1728
587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
588 1730
1731ecb_cold
589void 1732void
590ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
591{ 1734{
592 alloc = cb; 1735 alloc = cb;
593} 1736}
594 1737
595inline_speed void * 1738inline_speed void *
… …
598 ptr = alloc (ptr, size); 1741 ptr = alloc (ptr, size);
599 1742
600 if (!ptr && size) 1743 if (!ptr && size)
601 { 1744 {
602#if EV_AVOID_STDIO 1745#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1746 ev_printerr ("(libev) memory allocation failed, aborting.\n");
604#else 1747#else
605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1748 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
606#endif 1749#endif
607 abort (); 1750 abort ();
608 } 1751 }
609 1752
610 return ptr; 1753 return ptr;
… …
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1770 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
628 unsigned char unused; 1771 unsigned char unused;
629#if EV_USE_EPOLL 1772#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */ 1773 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif 1774#endif
632#if EV_SELECT_IS_WINSOCKET 1775#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
633 SOCKET handle; 1776 SOCKET handle;
1777#endif
1778#if EV_USE_IOCP
1779 OVERLAPPED or, ow;
634#endif 1780#endif
635} ANFD; 1781} ANFD;
636 1782
637/* stores the pending event set for a given watcher */ 1783/* stores the pending event set for a given watcher */
638typedef struct 1784typedef struct
… …
680 #undef VAR 1826 #undef VAR
681 }; 1827 };
682 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
683 1829
684 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
685 struct ev_loop *ev_default_loop_ptr; 1831 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
686 1832
687#else 1833#else
688 1834
689 ev_tstamp ev_rt_now; 1835 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
690 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
691 #include "ev_vars.h" 1837 #include "ev_vars.h"
692 #undef VAR 1838 #undef VAR
693 1839
694 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
… …
709 1855
710/*****************************************************************************/ 1856/*****************************************************************************/
711 1857
712#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
713ev_tstamp 1859ev_tstamp
714ev_time (void) 1860ev_time (void) EV_THROW
715{ 1861{
716#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
717 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
718 { 1864 {
719 struct timespec ts; 1865 struct timespec ts;
… …
743 return ev_time (); 1889 return ev_time ();
744} 1890}
745 1891
746#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
747ev_tstamp 1893ev_tstamp
748ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
749{ 1895{
750 return ev_rt_now; 1896 return ev_rt_now;
751} 1897}
752#endif 1898#endif
753 1899
754void 1900void
755ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
756{ 1902{
757 if (delay > 0.) 1903 if (delay > 0.)
758 { 1904 {
759#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
760 struct timespec ts; 1906 struct timespec ts;
761 1907
762 EV_TS_SET (ts, delay); 1908 EV_TS_SET (ts, delay);
763 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
764#elif defined(_WIN32) 1910#elif defined _WIN32
765 Sleep ((unsigned long)(delay * 1e3)); 1911 Sleep ((unsigned long)(delay * 1e3));
766#else 1912#else
767 struct timeval tv; 1913 struct timeval tv;
768 1914
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1915 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
788 1934
789 do 1935 do
790 ncur <<= 1; 1936 ncur <<= 1;
791 while (cnt > ncur); 1937 while (cnt > ncur);
792 1938
793 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1939 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
794 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1940 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
795 { 1941 {
796 ncur *= elem; 1942 ncur *= elem;
797 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1943 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
798 ncur = ncur - sizeof (void *) * 4; 1944 ncur = ncur - sizeof (void *) * 4;
… …
800 } 1946 }
801 1947
802 return ncur; 1948 return ncur;
803} 1949}
804 1950
805static noinline void * 1951noinline ecb_cold
1952static void *
806array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
807{ 1954{
808 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
809 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
810} 1957}
… …
813 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
814 1961
815#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
816 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
817 { \ 1964 { \
818 int ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
819 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
820 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
821 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
822 } 1969 }
823 1970
… …
835 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1982 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
836 1983
837/*****************************************************************************/ 1984/*****************************************************************************/
838 1985
839/* dummy callback for pending events */ 1986/* dummy callback for pending events */
840static void noinline 1987noinline
1988static void
841pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
842{ 1990{
843} 1991}
844 1992
845void noinline 1993noinline
1994void
846ev_feed_event (EV_P_ void *w, int revents) 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
847{ 1996{
848 W w_ = (W)w; 1997 W w_ = (W)w;
849 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
850 1999
851 if (expect_false (w_->pending)) 2000 if (expect_false (w_->pending))
… …
855 w_->pending = ++pendingcnt [pri]; 2004 w_->pending = ++pendingcnt [pri];
856 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2005 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
857 pendings [pri][w_->pending - 1].w = w_; 2006 pendings [pri][w_->pending - 1].w = w_;
858 pendings [pri][w_->pending - 1].events = revents; 2007 pendings [pri][w_->pending - 1].events = revents;
859 } 2008 }
2009
2010 pendingpri = NUMPRI - 1;
860} 2011}
861 2012
862inline_speed void 2013inline_speed void
863feed_reverse (EV_P_ W w) 2014feed_reverse (EV_P_ W w)
864{ 2015{
… …
910 if (expect_true (!anfd->reify)) 2061 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents); 2062 fd_event_nocheck (EV_A_ fd, revents);
912} 2063}
913 2064
914void 2065void
915ev_feed_fd_event (EV_P_ int fd, int revents) 2066ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
916{ 2067{
917 if (fd >= 0 && fd < anfdmax) 2068 if (fd >= 0 && fd < anfdmax)
918 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
919} 2070}
920 2071
… …
923inline_size void 2074inline_size void
924fd_reify (EV_P) 2075fd_reify (EV_P)
925{ 2076{
926 int i; 2077 int i;
927 2078
2079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2080 for (i = 0; i < fdchangecnt; ++i)
2081 {
2082 int fd = fdchanges [i];
2083 ANFD *anfd = anfds + fd;
2084
2085 if (anfd->reify & EV__IOFDSET && anfd->head)
2086 {
2087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2088
2089 if (handle != anfd->handle)
2090 {
2091 unsigned long arg;
2092
2093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2094
2095 /* handle changed, but fd didn't - we need to do it in two steps */
2096 backend_modify (EV_A_ fd, anfd->events, 0);
2097 anfd->events = 0;
2098 anfd->handle = handle;
2099 }
2100 }
2101 }
2102#endif
2103
928 for (i = 0; i < fdchangecnt; ++i) 2104 for (i = 0; i < fdchangecnt; ++i)
929 { 2105 {
930 int fd = fdchanges [i]; 2106 int fd = fdchanges [i];
931 ANFD *anfd = anfds + fd; 2107 ANFD *anfd = anfds + fd;
932 ev_io *w; 2108 ev_io *w;
… …
934 unsigned char o_events = anfd->events; 2110 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify; 2111 unsigned char o_reify = anfd->reify;
936 2112
937 anfd->reify = 0; 2113 anfd->reify = 0;
938 2114
939#if EV_SELECT_IS_WINSOCKET
940 if (o_reify & EV__IOFDSET)
941 {
942 unsigned long arg;
943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
945 }
946#endif
947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
949 { 2116 {
950 anfd->events = 0; 2117 anfd->events = 0;
951 2118
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
962 2129
963 fdchangecnt = 0; 2130 fdchangecnt = 0;
964} 2131}
965 2132
966/* something about the given fd changed */ 2133/* something about the given fd changed */
967inline_size void 2134inline_size
2135void
968fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
969{ 2137{
970 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
971 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
972 2140
… …
977 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
978 } 2146 }
979} 2147}
980 2148
981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2149/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
982inline_speed void 2150inline_speed ecb_cold void
983fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
984{ 2152{
985 ev_io *w; 2153 ev_io *w;
986 2154
987 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2158 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
991 } 2159 }
992} 2160}
993 2161
994/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
995inline_size int 2163inline_size ecb_cold int
996fd_valid (int fd) 2164fd_valid (int fd)
997{ 2165{
998#ifdef _WIN32 2166#ifdef _WIN32
999 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1000#else 2168#else
1001 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1002#endif 2170#endif
1003} 2171}
1004 2172
1005/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1006static void noinline 2174noinline ecb_cold
2175static void
1007fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1008{ 2177{
1009 int fd; 2178 int fd;
1010 2179
1011 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1013 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1014 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1015} 2184}
1016 2185
1017/* called on ENOMEM in select/poll to kill some fds and retry */ 2186/* called on ENOMEM in select/poll to kill some fds and retry */
1018static void noinline 2187noinline ecb_cold
2188static void
1019fd_enomem (EV_P) 2189fd_enomem (EV_P)
1020{ 2190{
1021 int fd; 2191 int fd;
1022 2192
1023 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1027 break; 2197 break;
1028 } 2198 }
1029} 2199}
1030 2200
1031/* usually called after fork if backend needs to re-arm all fds from scratch */ 2201/* usually called after fork if backend needs to re-arm all fds from scratch */
1032static void noinline 2202noinline
2203static void
1033fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1034{ 2205{
1035 int fd; 2206 int fd;
1036 2207
1037 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
1218 2389
1219/*****************************************************************************/ 2390/*****************************************************************************/
1220 2391
1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1222 2393
1223static void noinline 2394noinline ecb_cold
2395static void
1224evpipe_init (EV_P) 2396evpipe_init (EV_P)
1225{ 2397{
1226 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
1227 { 2399 {
2400 int fds [2];
2401
1228# if EV_USE_EVENTFD 2402# if EV_USE_EVENTFD
2403 fds [0] = -1;
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2404 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL) 2405 if (fds [1] < 0 && errno == EINVAL)
1231 evfd = eventfd (0, 0); 2406 fds [1] = eventfd (0, 0);
1232 2407
1233 if (evfd >= 0) 2408 if (fds [1] < 0)
2409# endif
1234 { 2410 {
2411 while (pipe (fds))
2412 ev_syserr ("(libev) error creating signal/async pipe");
2413
2414 fd_intern (fds [0]);
2415 }
2416
1235 evpipe [0] = -1; 2417 evpipe [0] = fds [0];
1236 fd_intern (evfd); /* doing it twice doesn't hurt */ 2418
1237 ev_io_set (&pipe_w, evfd, EV_READ); 2419 if (evpipe [1] < 0)
2420 evpipe [1] = fds [1]; /* first call, set write fd */
2421 else
2422 {
2423 /* on subsequent calls, do not change evpipe [1] */
2424 /* so that evpipe_write can always rely on its value. */
2425 /* this branch does not do anything sensible on windows, */
2426 /* so must not be executed on windows */
2427
2428 dup2 (fds [1], evpipe [1]);
2429 close (fds [1]);
2430 }
2431
2432 fd_intern (evpipe [1]);
2433
2434 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2435 ev_io_start (EV_A_ &pipe_w);
2436 ev_unref (EV_A); /* watcher should not keep loop alive */
2437 }
2438}
2439
2440inline_speed void
2441evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2442{
2443 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2444
2445 if (expect_true (*flag))
2446 return;
2447
2448 *flag = 1;
2449 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2450
2451 pipe_write_skipped = 1;
2452
2453 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2454
2455 if (pipe_write_wanted)
2456 {
2457 int old_errno;
2458
2459 pipe_write_skipped = 0;
2460 ECB_MEMORY_FENCE_RELEASE;
2461
2462 old_errno = errno; /* save errno because write will clobber it */
2463
2464#if EV_USE_EVENTFD
2465 if (evpipe [0] < 0)
2466 {
2467 uint64_t counter = 1;
2468 write (evpipe [1], &counter, sizeof (uint64_t));
1238 } 2469 }
1239 else 2470 else
1240# endif 2471#endif
1241 { 2472 {
1242 while (pipe (evpipe)) 2473#ifdef _WIN32
1243 ev_syserr ("(libev) error creating signal/async pipe"); 2474 WSABUF buf;
1244 2475 DWORD sent;
1245 fd_intern (evpipe [0]); 2476 buf.buf = &buf;
1246 fd_intern (evpipe [1]); 2477 buf.len = 1;
1247 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2478 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2479#else
2480 write (evpipe [1], &(evpipe [1]), 1);
2481#endif
1248 } 2482 }
1249
1250 ev_io_start (EV_A_ &pipe_w);
1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1252 }
1253}
1254
1255inline_size void
1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1257{
1258 if (!*flag)
1259 {
1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1262
1263 *flag = 1;
1264
1265#if EV_USE_EVENTFD
1266 if (evfd >= 0)
1267 {
1268 uint64_t counter = 1;
1269 write (evfd, &counter, sizeof (uint64_t));
1270 }
1271 else
1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1278 write (evpipe [1], &dummy, 1);
1279 2483
1280 errno = old_errno; 2484 errno = old_errno;
1281 } 2485 }
1282} 2486}
1283 2487
… …
1286static void 2490static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2491pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2492{
1289 int i; 2493 int i;
1290 2494
2495 if (revents & EV_READ)
2496 {
1291#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1293 { 2499 {
1294 uint64_t counter; 2500 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2501 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2502 }
1297 else 2503 else
1298#endif 2504#endif
1299 { 2505 {
1300 char dummy; 2506 char dummy[4];
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2507#ifdef _WIN32
2508 WSABUF buf;
2509 DWORD recvd;
2510 DWORD flags = 0;
2511 buf.buf = dummy;
2512 buf.len = sizeof (dummy);
2513 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2514#else
1302 read (evpipe [0], &dummy, 1); 2515 read (evpipe [0], &dummy, sizeof (dummy));
2516#endif
2517 }
1303 } 2518 }
1304 2519
2520 pipe_write_skipped = 0;
2521
2522 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2523
2524#if EV_SIGNAL_ENABLE
1305 if (sig_pending) 2525 if (sig_pending)
1306 { 2526 {
1307 sig_pending = 0; 2527 sig_pending = 0;
2528
2529 ECB_MEMORY_FENCE;
1308 2530
1309 for (i = EV_NSIG - 1; i--; ) 2531 for (i = EV_NSIG - 1; i--; )
1310 if (expect_false (signals [i].pending)) 2532 if (expect_false (signals [i].pending))
1311 ev_feed_signal_event (EV_A_ i + 1); 2533 ev_feed_signal_event (EV_A_ i + 1);
1312 } 2534 }
2535#endif
1313 2536
1314#if EV_ASYNC_ENABLE 2537#if EV_ASYNC_ENABLE
1315 if (async_pending) 2538 if (async_pending)
1316 { 2539 {
1317 async_pending = 0; 2540 async_pending = 0;
2541
2542 ECB_MEMORY_FENCE;
1318 2543
1319 for (i = asynccnt; i--; ) 2544 for (i = asynccnt; i--; )
1320 if (asyncs [i]->sent) 2545 if (asyncs [i]->sent)
1321 { 2546 {
1322 asyncs [i]->sent = 0; 2547 asyncs [i]->sent = 0;
2548 ECB_MEMORY_FENCE_RELEASE;
1323 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2549 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1324 } 2550 }
1325 } 2551 }
1326#endif 2552#endif
1327} 2553}
1328 2554
1329/*****************************************************************************/ 2555/*****************************************************************************/
1330 2556
2557void
2558ev_feed_signal (int signum) EV_THROW
2559{
2560#if EV_MULTIPLICITY
2561 EV_P;
2562 ECB_MEMORY_FENCE_ACQUIRE;
2563 EV_A = signals [signum - 1].loop;
2564
2565 if (!EV_A)
2566 return;
2567#endif
2568
2569 signals [signum - 1].pending = 1;
2570 evpipe_write (EV_A_ &sig_pending);
2571}
2572
1331static void 2573static void
1332ev_sighandler (int signum) 2574ev_sighandler (int signum)
1333{ 2575{
1334#if EV_MULTIPLICITY
1335 EV_P = signals [signum - 1].loop;
1336#endif
1337
1338#ifdef _WIN32 2576#ifdef _WIN32
1339 signal (signum, ev_sighandler); 2577 signal (signum, ev_sighandler);
1340#endif 2578#endif
1341 2579
1342 signals [signum - 1].pending = 1; 2580 ev_feed_signal (signum);
1343 evpipe_write (EV_A_ &sig_pending);
1344} 2581}
1345 2582
1346void noinline 2583noinline
2584void
1347ev_feed_signal_event (EV_P_ int signum) 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
1348{ 2586{
1349 WL w; 2587 WL w;
1350 2588
1351 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1352 return; 2590 return;
1353 2591
1354 --signum; 2592 --signum;
1355 2593
1356#if EV_MULTIPLICITY 2594#if EV_MULTIPLICITY
… …
1360 if (expect_false (signals [signum].loop != EV_A)) 2598 if (expect_false (signals [signum].loop != EV_A))
1361 return; 2599 return;
1362#endif 2600#endif
1363 2601
1364 signals [signum].pending = 0; 2602 signals [signum].pending = 0;
2603 ECB_MEMORY_FENCE_RELEASE;
1365 2604
1366 for (w = signals [signum].head; w; w = w->next) 2605 for (w = signals [signum].head; w; w = w->next)
1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1368} 2607}
1369 2608
… …
1448 2687
1449#endif 2688#endif
1450 2689
1451/*****************************************************************************/ 2690/*****************************************************************************/
1452 2691
2692#if EV_USE_IOCP
2693# include "ev_iocp.c"
2694#endif
1453#if EV_USE_PORT 2695#if EV_USE_PORT
1454# include "ev_port.c" 2696# include "ev_port.c"
1455#endif 2697#endif
1456#if EV_USE_KQUEUE 2698#if EV_USE_KQUEUE
1457# include "ev_kqueue.c" 2699# include "ev_kqueue.c"
… …
1464#endif 2706#endif
1465#if EV_USE_SELECT 2707#if EV_USE_SELECT
1466# include "ev_select.c" 2708# include "ev_select.c"
1467#endif 2709#endif
1468 2710
1469int 2711ecb_cold int
1470ev_version_major (void) 2712ev_version_major (void) EV_THROW
1471{ 2713{
1472 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
1473} 2715}
1474 2716
1475int 2717ecb_cold int
1476ev_version_minor (void) 2718ev_version_minor (void) EV_THROW
1477{ 2719{
1478 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
1479} 2721}
1480 2722
1481/* return true if we are running with elevated privileges and should ignore env variables */ 2723/* return true if we are running with elevated privileges and should ignore env variables */
1482int inline_size 2724inline_size ecb_cold int
1483enable_secure (void) 2725enable_secure (void)
1484{ 2726{
1485#ifdef _WIN32 2727#ifdef _WIN32
1486 return 0; 2728 return 0;
1487#else 2729#else
1488 return getuid () != geteuid () 2730 return getuid () != geteuid ()
1489 || getgid () != getegid (); 2731 || getgid () != getegid ();
1490#endif 2732#endif
1491} 2733}
1492 2734
2735ecb_cold
1493unsigned int 2736unsigned int
1494ev_supported_backends (void) 2737ev_supported_backends (void) EV_THROW
1495{ 2738{
1496 unsigned int flags = 0; 2739 unsigned int flags = 0;
1497 2740
1498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2742 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1502 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1503 2746
1504 return flags; 2747 return flags;
1505} 2748}
1506 2749
2750ecb_cold
1507unsigned int 2751unsigned int
1508ev_recommended_backends (void) 2752ev_recommended_backends (void) EV_THROW
1509{ 2753{
1510 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
1511 2755
1512#ifndef __NetBSD__ 2756#ifndef __NetBSD__
1513 /* kqueue is borked on everything but netbsd apparently */ 2757 /* kqueue is borked on everything but netbsd apparently */
… …
1524#endif 2768#endif
1525 2769
1526 return flags; 2770 return flags;
1527} 2771}
1528 2772
2773ecb_cold
1529unsigned int 2774unsigned int
1530ev_embeddable_backends (void) 2775ev_embeddable_backends (void) EV_THROW
1531{ 2776{
1532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1533 2778
1534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2779 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1535 /* please fix it and tell me how to detect the fix */ 2780 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1536 flags &= ~EVBACKEND_EPOLL; 2781 flags &= ~EVBACKEND_EPOLL;
1537 2782
1538 return flags; 2783 return flags;
1539} 2784}
1540 2785
1541unsigned int 2786unsigned int
1542ev_backend (EV_P) 2787ev_backend (EV_P) EV_THROW
1543{ 2788{
1544 return backend; 2789 return backend;
1545} 2790}
1546 2791
1547#if EV_FEATURE_API 2792#if EV_FEATURE_API
1548unsigned int 2793unsigned int
1549ev_iteration (EV_P) 2794ev_iteration (EV_P) EV_THROW
1550{ 2795{
1551 return loop_count; 2796 return loop_count;
1552} 2797}
1553 2798
1554unsigned int 2799unsigned int
1555ev_depth (EV_P) 2800ev_depth (EV_P) EV_THROW
1556{ 2801{
1557 return loop_depth; 2802 return loop_depth;
1558} 2803}
1559 2804
1560void 2805void
1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2806ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1562{ 2807{
1563 io_blocktime = interval; 2808 io_blocktime = interval;
1564} 2809}
1565 2810
1566void 2811void
1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2812ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1568{ 2813{
1569 timeout_blocktime = interval; 2814 timeout_blocktime = interval;
1570} 2815}
1571 2816
1572void 2817void
1573ev_set_userdata (EV_P_ void *data) 2818ev_set_userdata (EV_P_ void *data) EV_THROW
1574{ 2819{
1575 userdata = data; 2820 userdata = data;
1576} 2821}
1577 2822
1578void * 2823void *
1579ev_userdata (EV_P) 2824ev_userdata (EV_P) EV_THROW
1580{ 2825{
1581 return userdata; 2826 return userdata;
1582} 2827}
1583 2828
2829void
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2830ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1585{ 2831{
1586 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
1587} 2833}
1588 2834
2835void
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2836ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1590{ 2837{
1591 release_cb = release; 2838 release_cb = release;
1592 acquire_cb = acquire; 2839 acquire_cb = acquire;
1593} 2840}
1594#endif 2841#endif
1595 2842
1596/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
1597static void noinline 2844noinline ecb_cold
2845static void
1598loop_init (EV_P_ unsigned int flags) 2846loop_init (EV_P_ unsigned int flags) EV_THROW
1599{ 2847{
1600 if (!backend) 2848 if (!backend)
1601 { 2849 {
2850 origflags = flags;
2851
1602#if EV_USE_REALTIME 2852#if EV_USE_REALTIME
1603 if (!have_realtime) 2853 if (!have_realtime)
1604 { 2854 {
1605 struct timespec ts; 2855 struct timespec ts;
1606 2856
… …
1628 if (!(flags & EVFLAG_NOENV) 2878 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure () 2879 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS")) 2880 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS")); 2881 flags = atoi (getenv ("LIBEV_FLAGS"));
1632 2882
1633 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
1634 mn_now = get_clock (); 2884 mn_now = get_clock ();
1635 now_floor = mn_now; 2885 now_floor = mn_now;
1636 rtmn_diff = ev_rt_now - mn_now; 2886 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API 2887#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending; 2888 invoke_cb = ev_invoke_pending;
1639#endif 2889#endif
1640 2890
1641 io_blocktime = 0.; 2891 io_blocktime = 0.;
1642 timeout_blocktime = 0.; 2892 timeout_blocktime = 0.;
1643 backend = 0; 2893 backend = 0;
1644 backend_fd = -1; 2894 backend_fd = -1;
1645 sig_pending = 0; 2895 sig_pending = 0;
1646#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
1647 async_pending = 0; 2897 async_pending = 0;
1648#endif 2898#endif
2899 pipe_write_skipped = 0;
2900 pipe_write_wanted = 0;
2901 evpipe [0] = -1;
2902 evpipe [1] = -1;
1649#if EV_USE_INOTIFY 2903#if EV_USE_INOTIFY
1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2904 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1651#endif 2905#endif
1652#if EV_USE_SIGNALFD 2906#if EV_USE_SIGNALFD
1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2907 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1654#endif 2908#endif
1655 2909
1656 if (!(flags & 0x0000ffffU)) 2910 if (!(flags & EVBACKEND_MASK))
1657 flags |= ev_recommended_backends (); 2911 flags |= ev_recommended_backends ();
1658 2912
2913#if EV_USE_IOCP
2914 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2915#endif
1659#if EV_USE_PORT 2916#if EV_USE_PORT
1660 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2917 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1661#endif 2918#endif
1662#if EV_USE_KQUEUE 2919#if EV_USE_KQUEUE
1663 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2920 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1680#endif 2937#endif
1681 } 2938 }
1682} 2939}
1683 2940
1684/* free up a loop structure */ 2941/* free up a loop structure */
1685static void noinline 2942ecb_cold
2943void
1686loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
1687{ 2945{
1688 int i; 2946 int i;
2947
2948#if EV_MULTIPLICITY
2949 /* mimic free (0) */
2950 if (!EV_A)
2951 return;
2952#endif
2953
2954#if EV_CLEANUP_ENABLE
2955 /* queue cleanup watchers (and execute them) */
2956 if (expect_false (cleanupcnt))
2957 {
2958 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2959 EV_INVOKE_PENDING;
2960 }
2961#endif
2962
2963#if EV_CHILD_ENABLE
2964 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2965 {
2966 ev_ref (EV_A); /* child watcher */
2967 ev_signal_stop (EV_A_ &childev);
2968 }
2969#endif
1689 2970
1690 if (ev_is_active (&pipe_w)) 2971 if (ev_is_active (&pipe_w))
1691 { 2972 {
1692 /*ev_ref (EV_A);*/ 2973 /*ev_ref (EV_A);*/
1693 /*ev_io_stop (EV_A_ &pipe_w);*/ 2974 /*ev_io_stop (EV_A_ &pipe_w);*/
1694 2975
1695#if EV_USE_EVENTFD
1696 if (evfd >= 0)
1697 close (evfd);
1698#endif
1699
1700 if (evpipe [0] >= 0)
1701 {
1702 EV_WIN32_CLOSE_FD (evpipe [0]); 2976 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1703 EV_WIN32_CLOSE_FD (evpipe [1]); 2977 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1704 }
1705 } 2978 }
1706 2979
1707#if EV_USE_SIGNALFD 2980#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w)) 2981 if (ev_is_active (&sigfd_w))
1709 close (sigfd); 2982 close (sigfd);
… …
1715#endif 2988#endif
1716 2989
1717 if (backend_fd >= 0) 2990 if (backend_fd >= 0)
1718 close (backend_fd); 2991 close (backend_fd);
1719 2992
2993#if EV_USE_IOCP
2994 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2995#endif
1720#if EV_USE_PORT 2996#if EV_USE_PORT
1721 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2997 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1722#endif 2998#endif
1723#if EV_USE_KQUEUE 2999#if EV_USE_KQUEUE
1724 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3000 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1751 array_free (periodic, EMPTY); 3027 array_free (periodic, EMPTY);
1752#endif 3028#endif
1753#if EV_FORK_ENABLE 3029#if EV_FORK_ENABLE
1754 array_free (fork, EMPTY); 3030 array_free (fork, EMPTY);
1755#endif 3031#endif
3032#if EV_CLEANUP_ENABLE
3033 array_free (cleanup, EMPTY);
3034#endif
1756 array_free (prepare, EMPTY); 3035 array_free (prepare, EMPTY);
1757 array_free (check, EMPTY); 3036 array_free (check, EMPTY);
1758#if EV_ASYNC_ENABLE 3037#if EV_ASYNC_ENABLE
1759 array_free (async, EMPTY); 3038 array_free (async, EMPTY);
1760#endif 3039#endif
1761 3040
1762 backend = 0; 3041 backend = 0;
3042
3043#if EV_MULTIPLICITY
3044 if (ev_is_default_loop (EV_A))
3045#endif
3046 ev_default_loop_ptr = 0;
3047#if EV_MULTIPLICITY
3048 else
3049 ev_free (EV_A);
3050#endif
1763} 3051}
1764 3052
1765#if EV_USE_INOTIFY 3053#if EV_USE_INOTIFY
1766inline_size void infy_fork (EV_P); 3054inline_size void infy_fork (EV_P);
1767#endif 3055#endif
… …
1780#endif 3068#endif
1781#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
1782 infy_fork (EV_A); 3070 infy_fork (EV_A);
1783#endif 3071#endif
1784 3072
3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1785 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
1786 { 3075 {
1787 /* this "locks" the handlers against writing to the pipe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1788 /* while we modify the fd vars */
1789 sig_pending = 1;
1790#if EV_ASYNC_ENABLE
1791 async_pending = 1;
1792#endif
1793 3077
1794 ev_ref (EV_A); 3078 ev_ref (EV_A);
1795 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
1796 3080
1797#if EV_USE_EVENTFD
1798 if (evfd >= 0)
1799 close (evfd);
1800#endif
1801
1802 if (evpipe [0] >= 0) 3081 if (evpipe [0] >= 0)
1803 {
1804 EV_WIN32_CLOSE_FD (evpipe [0]); 3082 EV_WIN32_CLOSE_FD (evpipe [0]);
1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1806 }
1807 3083
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1809 evpipe_init (EV_A); 3084 evpipe_init (EV_A);
1810 /* now iterate over everything, in case we missed something */ 3085 /* iterate over everything, in case we missed something before */
1811 pipecb (EV_A_ &pipe_w, EV_READ); 3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1812#endif
1813 } 3087 }
3088#endif
1814 3089
1815 postfork = 0; 3090 postfork = 0;
1816} 3091}
1817 3092
1818#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
1819 3094
3095ecb_cold
1820struct ev_loop * 3096struct ev_loop *
1821ev_loop_new (unsigned int flags) 3097ev_loop_new (unsigned int flags) EV_THROW
1822{ 3098{
1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1824 3100
1825 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
1826 loop_init (EV_A_ flags); 3102 loop_init (EV_A_ flags);
1827 3103
1828 if (ev_backend (EV_A)) 3104 if (ev_backend (EV_A))
1829 return EV_A; 3105 return EV_A;
1830 3106
3107 ev_free (EV_A);
1831 return 0; 3108 return 0;
1832} 3109}
1833 3110
1834void
1835ev_loop_destroy (EV_P)
1836{
1837 loop_destroy (EV_A);
1838 ev_free (loop);
1839}
1840
1841void
1842ev_loop_fork (EV_P)
1843{
1844 postfork = 1; /* must be in line with ev_default_fork */
1845}
1846#endif /* multiplicity */ 3111#endif /* multiplicity */
1847 3112
1848#if EV_VERIFY 3113#if EV_VERIFY
1849static void noinline 3114noinline ecb_cold
3115static void
1850verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
1851{ 3117{
1852 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3118 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1853 3119
1854 if (w->pending) 3120 if (w->pending)
1855 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3121 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1856} 3122}
1857 3123
1858static void noinline 3124noinline ecb_cold
3125static void
1859verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
1860{ 3127{
1861 int i; 3128 int i;
1862 3129
1863 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1868 3135
1869 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1870 } 3137 }
1871} 3138}
1872 3139
1873static void noinline 3140noinline ecb_cold
3141static void
1874array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
1875{ 3143{
1876 while (cnt--) 3144 while (cnt--)
1877 { 3145 {
1878 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1880 } 3148 }
1881} 3149}
1882#endif 3150#endif
1883 3151
1884#if EV_FEATURE_API 3152#if EV_FEATURE_API
1885void 3153void ecb_cold
1886ev_verify (EV_P) 3154ev_verify (EV_P) EV_THROW
1887{ 3155{
1888#if EV_VERIFY 3156#if EV_VERIFY
1889 int i; 3157 int i;
1890 WL w; 3158 WL w, w2;
1891 3159
1892 assert (activecnt >= -1); 3160 assert (activecnt >= -1);
1893 3161
1894 assert (fdchangemax >= fdchangecnt); 3162 assert (fdchangemax >= fdchangecnt);
1895 for (i = 0; i < fdchangecnt; ++i) 3163 for (i = 0; i < fdchangecnt; ++i)
1896 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3164 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1897 3165
1898 assert (anfdmax >= 0); 3166 assert (anfdmax >= 0);
1899 for (i = 0; i < anfdmax; ++i) 3167 for (i = 0; i < anfdmax; ++i)
3168 {
3169 int j = 0;
3170
1900 for (w = anfds [i].head; w; w = w->next) 3171 for (w = w2 = anfds [i].head; w; w = w->next)
1901 { 3172 {
1902 verify_watcher (EV_A_ (W)w); 3173 verify_watcher (EV_A_ (W)w);
3174
3175 if (j++ & 1)
3176 {
3177 assert (("libev: io watcher list contains a loop", w != w2));
3178 w2 = w2->next;
3179 }
3180
1903 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3181 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1904 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3182 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1905 } 3183 }
3184 }
1906 3185
1907 assert (timermax >= timercnt); 3186 assert (timermax >= timercnt);
1908 verify_heap (EV_A_ timers, timercnt); 3187 verify_heap (EV_A_ timers, timercnt);
1909 3188
1910#if EV_PERIODIC_ENABLE 3189#if EV_PERIODIC_ENABLE
… …
1925#if EV_FORK_ENABLE 3204#if EV_FORK_ENABLE
1926 assert (forkmax >= forkcnt); 3205 assert (forkmax >= forkcnt);
1927 array_verify (EV_A_ (W *)forks, forkcnt); 3206 array_verify (EV_A_ (W *)forks, forkcnt);
1928#endif 3207#endif
1929 3208
3209#if EV_CLEANUP_ENABLE
3210 assert (cleanupmax >= cleanupcnt);
3211 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3212#endif
3213
1930#if EV_ASYNC_ENABLE 3214#if EV_ASYNC_ENABLE
1931 assert (asyncmax >= asynccnt); 3215 assert (asyncmax >= asynccnt);
1932 array_verify (EV_A_ (W *)asyncs, asynccnt); 3216 array_verify (EV_A_ (W *)asyncs, asynccnt);
1933#endif 3217#endif
1934 3218
… …
1951#endif 3235#endif
1952} 3236}
1953#endif 3237#endif
1954 3238
1955#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
1956struct ev_loop * 3241struct ev_loop *
1957ev_default_loop_init (unsigned int flags)
1958#else 3242#else
1959int 3243int
3244#endif
1960ev_default_loop (unsigned int flags) 3245ev_default_loop (unsigned int flags) EV_THROW
1961#endif
1962{ 3246{
1963 if (!ev_default_loop_ptr) 3247 if (!ev_default_loop_ptr)
1964 { 3248 {
1965#if EV_MULTIPLICITY 3249#if EV_MULTIPLICITY
1966 EV_P = ev_default_loop_ptr = &default_loop_struct; 3250 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1985 3269
1986 return ev_default_loop_ptr; 3270 return ev_default_loop_ptr;
1987} 3271}
1988 3272
1989void 3273void
1990ev_default_destroy (void) 3274ev_loop_fork (EV_P) EV_THROW
1991{ 3275{
1992#if EV_MULTIPLICITY 3276 postfork = 1;
1993 EV_P = ev_default_loop_ptr;
1994#endif
1995
1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1999 ev_ref (EV_A); /* child watcher */
2000 ev_signal_stop (EV_A_ &childev);
2001#endif
2002
2003 loop_destroy (EV_A);
2004}
2005
2006void
2007ev_default_fork (void)
2008{
2009#if EV_MULTIPLICITY
2010 EV_P = ev_default_loop_ptr;
2011#endif
2012
2013 postfork = 1; /* must be in line with ev_loop_fork */
2014} 3277}
2015 3278
2016/*****************************************************************************/ 3279/*****************************************************************************/
2017 3280
2018void 3281void
… …
2020{ 3283{
2021 EV_CB_INVOKE ((W)w, revents); 3284 EV_CB_INVOKE ((W)w, revents);
2022} 3285}
2023 3286
2024unsigned int 3287unsigned int
2025ev_pending_count (EV_P) 3288ev_pending_count (EV_P) EV_THROW
2026{ 3289{
2027 int pri; 3290 int pri;
2028 unsigned int count = 0; 3291 unsigned int count = 0;
2029 3292
2030 for (pri = NUMPRI; pri--; ) 3293 for (pri = NUMPRI; pri--; )
2031 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
2032 3295
2033 return count; 3296 return count;
2034} 3297}
2035 3298
2036void noinline 3299noinline
3300void
2037ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
2038{ 3302{
2039 int pri; 3303 pendingpri = NUMPRI;
2040 3304
2041 for (pri = NUMPRI; pri--; ) 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3306 {
3307 --pendingpri;
3308
2042 while (pendingcnt [pri]) 3309 while (pendingcnt [pendingpri])
2043 { 3310 {
2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3311 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2045 3312
2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
2048
2049 p->w->pending = 0; 3313 p->w->pending = 0;
2050 EV_CB_INVOKE (p->w, p->events); 3314 EV_CB_INVOKE (p->w, p->events);
2051 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2052 } 3316 }
3317 }
2053} 3318}
2054 3319
2055#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2056/* make idle watchers pending. this handles the "call-idle */ 3321/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */ 3322/* only when higher priorities are idle" logic */
… …
2114 feed_reverse_done (EV_A_ EV_TIMER); 3379 feed_reverse_done (EV_A_ EV_TIMER);
2115 } 3380 }
2116} 3381}
2117 3382
2118#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
3384
3385noinline
3386static void
3387periodic_recalc (EV_P_ ev_periodic *w)
3388{
3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3391
3392 /* the above almost always errs on the low side */
3393 while (at <= ev_rt_now)
3394 {
3395 ev_tstamp nat = at + w->interval;
3396
3397 /* when resolution fails us, we use ev_rt_now */
3398 if (expect_false (nat == at))
3399 {
3400 at = ev_rt_now;
3401 break;
3402 }
3403
3404 at = nat;
3405 }
3406
3407 ev_at (w) = at;
3408}
3409
2119/* make periodics pending */ 3410/* make periodics pending */
2120inline_size void 3411inline_size void
2121periodics_reify (EV_P) 3412periodics_reify (EV_P)
2122{ 3413{
2123 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
2124 3415
2125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3416 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2126 { 3417 {
2127 int feed_count = 0;
2128
2129 do 3418 do
2130 { 3419 {
2131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3420 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2132 3421
2133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3422 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2142 ANHE_at_cache (periodics [HEAP0]); 3431 ANHE_at_cache (periodics [HEAP0]);
2143 downheap (periodics, periodiccnt, HEAP0); 3432 downheap (periodics, periodiccnt, HEAP0);
2144 } 3433 }
2145 else if (w->interval) 3434 else if (w->interval)
2146 { 3435 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3436 periodic_recalc (EV_A_ w);
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2163 } 3439 }
2164 else 3440 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3441 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2173 } 3449 }
2174} 3450}
2175 3451
2176/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3453/* TODO: maybe ensure that at least one event happens when jumping forward? */
2178static void noinline 3454noinline ecb_cold
3455static void
2179periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
2180{ 3457{
2181 int i; 3458 int i;
2182 3459
2183 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3463 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2187 3464
2188 if (w->reschedule_cb) 3465 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3466 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 3467 else if (w->interval)
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3468 periodic_recalc (EV_A_ w);
2192 3469
2193 ANHE_at_cache (periodics [i]); 3470 ANHE_at_cache (periodics [i]);
2194 } 3471 }
2195 3472
2196 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
2197} 3474}
2198#endif 3475#endif
2199 3476
2200/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
2201static void noinline 3478noinline ecb_cold
3479static void
2202timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
2203{ 3481{
2204 int i; 3482 int i;
2205 3483
2206 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
2243 * doesn't hurt either as we only do this on time-jumps or 3521 * doesn't hurt either as we only do this on time-jumps or
2244 * in the unlikely event of having been preempted here. 3522 * in the unlikely event of having been preempted here.
2245 */ 3523 */
2246 for (i = 4; --i; ) 3524 for (i = 4; --i; )
2247 { 3525 {
3526 ev_tstamp diff;
2248 rtmn_diff = ev_rt_now - mn_now; 3527 rtmn_diff = ev_rt_now - mn_now;
2249 3528
3529 diff = odiff - rtmn_diff;
3530
2250 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3531 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2251 return; /* all is well */ 3532 return; /* all is well */
2252 3533
2253 ev_rt_now = ev_time (); 3534 ev_rt_now = ev_time ();
2254 mn_now = get_clock (); 3535 mn_now = get_clock ();
2255 now_floor = mn_now; 3536 now_floor = mn_now;
… …
2277 3558
2278 mn_now = ev_rt_now; 3559 mn_now = ev_rt_now;
2279 } 3560 }
2280} 3561}
2281 3562
2282void 3563int
2283ev_run (EV_P_ int flags) 3564ev_run (EV_P_ int flags)
2284{ 3565{
2285#if EV_FEATURE_API 3566#if EV_FEATURE_API
2286 ++loop_depth; 3567 ++loop_depth;
2287#endif 3568#endif
… …
2345 ev_tstamp prev_mn_now = mn_now; 3626 ev_tstamp prev_mn_now = mn_now;
2346 3627
2347 /* update time to cancel out callback processing overhead */ 3628 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100); 3629 time_update (EV_A_ 1e100);
2349 3630
3631 /* from now on, we want a pipe-wake-up */
3632 pipe_write_wanted = 1;
3633
3634 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3635
2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3636 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2351 { 3637 {
2352 waittime = MAX_BLOCKTIME; 3638 waittime = MAX_BLOCKTIME;
2353 3639
2354 if (timercnt) 3640 if (timercnt)
2355 { 3641 {
2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3642 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2357 if (waittime > to) waittime = to; 3643 if (waittime > to) waittime = to;
2358 } 3644 }
2359 3645
2360#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2361 if (periodiccnt) 3647 if (periodiccnt)
2362 { 3648 {
2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3649 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2364 if (waittime > to) waittime = to; 3650 if (waittime > to) waittime = to;
2365 } 3651 }
2366#endif 3652#endif
2367 3653
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3654 /* don't let timeouts decrease the waittime below timeout_blocktime */
2369 if (expect_false (waittime < timeout_blocktime)) 3655 if (expect_false (waittime < timeout_blocktime))
2370 waittime = timeout_blocktime; 3656 waittime = timeout_blocktime;
3657
3658 /* at this point, we NEED to wait, so we have to ensure */
3659 /* to pass a minimum nonzero value to the backend */
3660 if (expect_false (waittime < backend_mintime))
3661 waittime = backend_mintime;
2371 3662
2372 /* extra check because io_blocktime is commonly 0 */ 3663 /* extra check because io_blocktime is commonly 0 */
2373 if (expect_false (io_blocktime)) 3664 if (expect_false (io_blocktime))
2374 { 3665 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3666 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376 3667
2377 if (sleeptime > waittime - backend_fudge) 3668 if (sleeptime > waittime - backend_mintime)
2378 sleeptime = waittime - backend_fudge; 3669 sleeptime = waittime - backend_mintime;
2379 3670
2380 if (expect_true (sleeptime > 0.)) 3671 if (expect_true (sleeptime > 0.))
2381 { 3672 {
2382 ev_sleep (sleeptime); 3673 ev_sleep (sleeptime);
2383 waittime -= sleeptime; 3674 waittime -= sleeptime;
… …
2390#endif 3681#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3682 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2392 backend_poll (EV_A_ waittime); 3683 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2394 3685
3686 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3687
3688 ECB_MEMORY_FENCE_ACQUIRE;
3689 if (pipe_write_skipped)
3690 {
3691 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3692 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3693 }
3694
3695
2395 /* update ev_rt_now, do magic */ 3696 /* update ev_rt_now, do magic */
2396 time_update (EV_A_ waittime + sleeptime); 3697 time_update (EV_A_ waittime + sleeptime);
2397 } 3698 }
2398 3699
2399 /* queue pending timers and reschedule them */ 3700 /* queue pending timers and reschedule them */
… …
2425 loop_done = EVBREAK_CANCEL; 3726 loop_done = EVBREAK_CANCEL;
2426 3727
2427#if EV_FEATURE_API 3728#if EV_FEATURE_API
2428 --loop_depth; 3729 --loop_depth;
2429#endif 3730#endif
2430}
2431 3731
3732 return activecnt;
3733}
3734
2432void 3735void
2433ev_break (EV_P_ int how) 3736ev_break (EV_P_ int how) EV_THROW
2434{ 3737{
2435 loop_done = how; 3738 loop_done = how;
2436} 3739}
2437 3740
2438void 3741void
2439ev_ref (EV_P) 3742ev_ref (EV_P) EV_THROW
2440{ 3743{
2441 ++activecnt; 3744 ++activecnt;
2442} 3745}
2443 3746
2444void 3747void
2445ev_unref (EV_P) 3748ev_unref (EV_P) EV_THROW
2446{ 3749{
2447 --activecnt; 3750 --activecnt;
2448} 3751}
2449 3752
2450void 3753void
2451ev_now_update (EV_P) 3754ev_now_update (EV_P) EV_THROW
2452{ 3755{
2453 time_update (EV_A_ 1e100); 3756 time_update (EV_A_ 1e100);
2454} 3757}
2455 3758
2456void 3759void
2457ev_suspend (EV_P) 3760ev_suspend (EV_P) EV_THROW
2458{ 3761{
2459 ev_now_update (EV_A); 3762 ev_now_update (EV_A);
2460} 3763}
2461 3764
2462void 3765void
2463ev_resume (EV_P) 3766ev_resume (EV_P) EV_THROW
2464{ 3767{
2465 ev_tstamp mn_prev = mn_now; 3768 ev_tstamp mn_prev = mn_now;
2466 3769
2467 ev_now_update (EV_A); 3770 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev); 3771 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2507 w->pending = 0; 3810 w->pending = 0;
2508 } 3811 }
2509} 3812}
2510 3813
2511int 3814int
2512ev_clear_pending (EV_P_ void *w) 3815ev_clear_pending (EV_P_ void *w) EV_THROW
2513{ 3816{
2514 W w_ = (W)w; 3817 W w_ = (W)w;
2515 int pending = w_->pending; 3818 int pending = w_->pending;
2516 3819
2517 if (expect_true (pending)) 3820 if (expect_true (pending))
… …
2549 w->active = 0; 3852 w->active = 0;
2550} 3853}
2551 3854
2552/*****************************************************************************/ 3855/*****************************************************************************/
2553 3856
2554void noinline 3857noinline
3858void
2555ev_io_start (EV_P_ ev_io *w) 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
2556{ 3860{
2557 int fd = w->fd; 3861 int fd = w->fd;
2558 3862
2559 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
2560 return; 3864 return;
… …
2566 3870
2567 ev_start (EV_A_ (W)w, 1); 3871 ev_start (EV_A_ (W)w, 1);
2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3872 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2569 wlist_add (&anfds[fd].head, (WL)w); 3873 wlist_add (&anfds[fd].head, (WL)w);
2570 3874
3875 /* common bug, apparently */
3876 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3877
2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3878 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2572 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
2573 3880
2574 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
2575} 3882}
2576 3883
2577void noinline 3884noinline
3885void
2578ev_io_stop (EV_P_ ev_io *w) 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
2579{ 3887{
2580 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
2581 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
2582 return; 3890 return;
2583 3891
… …
2591 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2592 3900
2593 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2594} 3902}
2595 3903
2596void noinline 3904noinline
3905void
2597ev_timer_start (EV_P_ ev_timer *w) 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2598{ 3907{
2599 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
2600 return; 3909 return;
2601 3910
2602 ev_at (w) += mn_now; 3911 ev_at (w) += mn_now;
… …
2615 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2616 3925
2617 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3926 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2618} 3927}
2619 3928
2620void noinline 3929noinline
3930void
2621ev_timer_stop (EV_P_ ev_timer *w) 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2622{ 3932{
2623 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
2624 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
2625 return; 3935 return;
2626 3936
… …
2645 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
2646 3956
2647 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
2648} 3958}
2649 3959
2650void noinline 3960noinline
3961void
2651ev_timer_again (EV_P_ ev_timer *w) 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2652{ 3963{
2653 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3965
3966 clear_pending (EV_A_ (W)w);
2654 3967
2655 if (ev_is_active (w)) 3968 if (ev_is_active (w))
2656 { 3969 {
2657 if (w->repeat) 3970 if (w->repeat)
2658 { 3971 {
… …
2671 3984
2672 EV_FREQUENT_CHECK; 3985 EV_FREQUENT_CHECK;
2673} 3986}
2674 3987
2675ev_tstamp 3988ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w) 3989ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2677{ 3990{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2679} 3992}
2680 3993
2681#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
2682void noinline 3995noinline
3996void
2683ev_periodic_start (EV_P_ ev_periodic *w) 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2684{ 3998{
2685 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
2686 return; 4000 return;
2687 4001
2688 if (w->reschedule_cb) 4002 if (w->reschedule_cb)
2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4003 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2690 else if (w->interval) 4004 else if (w->interval)
2691 { 4005 {
2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4006 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2693 /* this formula differs from the one in periodic_reify because we do not always round up */ 4007 periodic_recalc (EV_A_ w);
2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2695 } 4008 }
2696 else 4009 else
2697 ev_at (w) = w->offset; 4010 ev_at (w) = w->offset;
2698 4011
2699 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
… …
2708 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
2709 4022
2710 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4023 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2711} 4024}
2712 4025
2713void noinline 4026noinline
4027void
2714ev_periodic_stop (EV_P_ ev_periodic *w) 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2715{ 4029{
2716 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
2717 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
2718 return; 4032 return;
2719 4033
… …
2736 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
2737 4051
2738 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2739} 4053}
2740 4054
2741void noinline 4055noinline
4056void
2742ev_periodic_again (EV_P_ ev_periodic *w) 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2743{ 4058{
2744 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
2745 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
2746 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
2747} 4062}
… …
2751# define SA_RESTART 0 4066# define SA_RESTART 0
2752#endif 4067#endif
2753 4068
2754#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
2755 4070
2756void noinline 4071noinline
4072void
2757ev_signal_start (EV_P_ ev_signal *w) 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2758{ 4074{
2759 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2760 return; 4076 return;
2761 4077
2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4078 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2764#if EV_MULTIPLICITY 4080#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops", 4081 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4082 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2767 4083
2768 signals [w->signum - 1].loop = EV_A; 4084 signals [w->signum - 1].loop = EV_A;
4085 ECB_MEMORY_FENCE_RELEASE;
2769#endif 4086#endif
2770 4087
2771 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2772 4089
2773#if EV_USE_SIGNALFD 4090#if EV_USE_SIGNALFD
… …
2820 sa.sa_handler = ev_sighandler; 4137 sa.sa_handler = ev_sighandler;
2821 sigfillset (&sa.sa_mask); 4138 sigfillset (&sa.sa_mask);
2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4139 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2823 sigaction (w->signum, &sa, 0); 4140 sigaction (w->signum, &sa, 0);
2824 4141
4142 if (origflags & EVFLAG_NOSIGMASK)
4143 {
2825 sigemptyset (&sa.sa_mask); 4144 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum); 4145 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4146 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4147 }
2828#endif 4148#endif
2829 } 4149 }
2830 4150
2831 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
2832} 4152}
2833 4153
2834void noinline 4154noinline
4155void
2835ev_signal_stop (EV_P_ ev_signal *w) 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2836{ 4157{
2837 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
2838 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
2839 return; 4160 return;
2840 4161
… …
2871#endif 4192#endif
2872 4193
2873#if EV_CHILD_ENABLE 4194#if EV_CHILD_ENABLE
2874 4195
2875void 4196void
2876ev_child_start (EV_P_ ev_child *w) 4197ev_child_start (EV_P_ ev_child *w) EV_THROW
2877{ 4198{
2878#if EV_MULTIPLICITY 4199#if EV_MULTIPLICITY
2879 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4200 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2880#endif 4201#endif
2881 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
… …
2888 4209
2889 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
2890} 4211}
2891 4212
2892void 4213void
2893ev_child_stop (EV_P_ ev_child *w) 4214ev_child_stop (EV_P_ ev_child *w) EV_THROW
2894{ 4215{
2895 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2896 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
2897 return; 4218 return;
2898 4219
… …
2915 4236
2916#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
2917#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2918#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
2919 4240
2920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4241noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2921 4242
2922#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
2923 4244
2924/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4245/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2926 4247
2927static void noinline 4248noinline
4249static void
2928infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
2929{ 4251{
2930 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4252 w->wd = inotify_add_watch (fs_fd, w->path,
4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4255 | IN_DONT_FOLLOW | IN_MASK_ADD);
2931 4256
2932 if (w->wd >= 0) 4257 if (w->wd >= 0)
2933 { 4258 {
2934 struct statfs sfs; 4259 struct statfs sfs;
2935 4260
… …
2939 4264
2940 if (!fs_2625) 4265 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4266 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs) 4267 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */ 4268 && (sfs.f_type == 0x1373 /* devfs */
4269 || sfs.f_type == 0x4006 /* fat */
4270 || sfs.f_type == 0x4d44 /* msdos */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */ 4271 || sfs.f_type == 0xEF53 /* ext2/3 */
4272 || sfs.f_type == 0x72b6 /* jffs2 */
4273 || sfs.f_type == 0x858458f6 /* ramfs */
4274 || sfs.f_type == 0x5346544e /* ntfs */
2945 || sfs.f_type == 0x3153464a /* jfs */ 4275 || sfs.f_type == 0x3153464a /* jfs */
4276 || sfs.f_type == 0x9123683e /* btrfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */ 4277 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */ 4278 || sfs.f_type == 0x01021994 /* tmpfs */
2948 || sfs.f_type == 0x58465342 /* xfs */)) 4279 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4280 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else 4281 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4282 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2952 } 4283 }
… …
2973 if (!pend || pend == path) 4304 if (!pend || pend == path)
2974 break; 4305 break;
2975 4306
2976 *pend = 0; 4307 *pend = 0;
2977 w->wd = inotify_add_watch (fs_fd, path, mask); 4308 w->wd = inotify_add_watch (fs_fd, path, mask);
2978 } 4309 }
2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4310 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2980 } 4311 }
2981 } 4312 }
2982 4313
2983 if (w->wd >= 0) 4314 if (w->wd >= 0)
… …
2987 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2988 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
2989 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2990} 4321}
2991 4322
2992static void noinline 4323noinline
4324static void
2993infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
2994{ 4326{
2995 int slot; 4327 int slot;
2996 int wd = w->wd; 4328 int wd = w->wd;
2997 4329
… …
3004 4336
3005 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
3006 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
3007} 4339}
3008 4340
3009static void noinline 4341noinline
4342static void
3010infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3011{ 4344{
3012 if (slot < 0) 4345 if (slot < 0)
3013 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
3014 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3050 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
3052 } 4385 }
3053} 4386}
3054 4387
3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085}
3086
3087inline_size void 4388inline_size ecb_cold
4389void
3088ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
3089{ 4391{
3090 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4393 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3092 */ 4394 */
… …
3097} 4399}
3098 4400
3099inline_size int 4401inline_size int
3100infy_newfd (void) 4402infy_newfd (void)
3101{ 4403{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4404#if defined IN_CLOEXEC && defined IN_NONBLOCK
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4405 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0) 4406 if (fd >= 0)
3105 return fd; 4407 return fd;
3106#endif 4408#endif
3107 return inotify_init (); 4409 return inotify_init ();
… …
3182#else 4484#else
3183# define EV_LSTAT(p,b) lstat (p, b) 4485# define EV_LSTAT(p,b) lstat (p, b)
3184#endif 4486#endif
3185 4487
3186void 4488void
3187ev_stat_stat (EV_P_ ev_stat *w) 4489ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3188{ 4490{
3189 if (lstat (w->path, &w->attr) < 0) 4491 if (lstat (w->path, &w->attr) < 0)
3190 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
3191 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
3192 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
3193} 4495}
3194 4496
3195static void noinline 4497noinline
4498static void
3196stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3197{ 4500{
3198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3199 4502
3200 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
3231 ev_feed_event (EV_A_ w, EV_STAT); 4534 ev_feed_event (EV_A_ w, EV_STAT);
3232 } 4535 }
3233} 4536}
3234 4537
3235void 4538void
3236ev_stat_start (EV_P_ ev_stat *w) 4539ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3237{ 4540{
3238 if (expect_false (ev_is_active (w))) 4541 if (expect_false (ev_is_active (w)))
3239 return; 4542 return;
3240 4543
3241 ev_stat_stat (EV_A_ w); 4544 ev_stat_stat (EV_A_ w);
… …
3262 4565
3263 EV_FREQUENT_CHECK; 4566 EV_FREQUENT_CHECK;
3264} 4567}
3265 4568
3266void 4569void
3267ev_stat_stop (EV_P_ ev_stat *w) 4570ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3268{ 4571{
3269 clear_pending (EV_A_ (W)w); 4572 clear_pending (EV_A_ (W)w);
3270 if (expect_false (!ev_is_active (w))) 4573 if (expect_false (!ev_is_active (w)))
3271 return; 4574 return;
3272 4575
… …
3288} 4591}
3289#endif 4592#endif
3290 4593
3291#if EV_IDLE_ENABLE 4594#if EV_IDLE_ENABLE
3292void 4595void
3293ev_idle_start (EV_P_ ev_idle *w) 4596ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3294{ 4597{
3295 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3296 return; 4599 return;
3297 4600
3298 pri_adjust (EV_A_ (W)w); 4601 pri_adjust (EV_A_ (W)w);
… …
3311 4614
3312 EV_FREQUENT_CHECK; 4615 EV_FREQUENT_CHECK;
3313} 4616}
3314 4617
3315void 4618void
3316ev_idle_stop (EV_P_ ev_idle *w) 4619ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3317{ 4620{
3318 clear_pending (EV_A_ (W)w); 4621 clear_pending (EV_A_ (W)w);
3319 if (expect_false (!ev_is_active (w))) 4622 if (expect_false (!ev_is_active (w)))
3320 return; 4623 return;
3321 4624
… …
3335} 4638}
3336#endif 4639#endif
3337 4640
3338#if EV_PREPARE_ENABLE 4641#if EV_PREPARE_ENABLE
3339void 4642void
3340ev_prepare_start (EV_P_ ev_prepare *w) 4643ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3341{ 4644{
3342 if (expect_false (ev_is_active (w))) 4645 if (expect_false (ev_is_active (w)))
3343 return; 4646 return;
3344 4647
3345 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
… …
3350 4653
3351 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3352} 4655}
3353 4656
3354void 4657void
3355ev_prepare_stop (EV_P_ ev_prepare *w) 4658ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3356{ 4659{
3357 clear_pending (EV_A_ (W)w); 4660 clear_pending (EV_A_ (W)w);
3358 if (expect_false (!ev_is_active (w))) 4661 if (expect_false (!ev_is_active (w)))
3359 return; 4662 return;
3360 4663
… …
3373} 4676}
3374#endif 4677#endif
3375 4678
3376#if EV_CHECK_ENABLE 4679#if EV_CHECK_ENABLE
3377void 4680void
3378ev_check_start (EV_P_ ev_check *w) 4681ev_check_start (EV_P_ ev_check *w) EV_THROW
3379{ 4682{
3380 if (expect_false (ev_is_active (w))) 4683 if (expect_false (ev_is_active (w)))
3381 return; 4684 return;
3382 4685
3383 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
… …
3388 4691
3389 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
3390} 4693}
3391 4694
3392void 4695void
3393ev_check_stop (EV_P_ ev_check *w) 4696ev_check_stop (EV_P_ ev_check *w) EV_THROW
3394{ 4697{
3395 clear_pending (EV_A_ (W)w); 4698 clear_pending (EV_A_ (W)w);
3396 if (expect_false (!ev_is_active (w))) 4699 if (expect_false (!ev_is_active (w)))
3397 return; 4700 return;
3398 4701
… …
3410 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3411} 4714}
3412#endif 4715#endif
3413 4716
3414#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
3415void noinline 4718noinline
4719void
3416ev_embed_sweep (EV_P_ ev_embed *w) 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3417{ 4721{
3418 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
3419} 4723}
3420 4724
3421static void 4725static void
… …
3469 ev_idle_stop (EV_A_ idle); 4773 ev_idle_stop (EV_A_ idle);
3470} 4774}
3471#endif 4775#endif
3472 4776
3473void 4777void
3474ev_embed_start (EV_P_ ev_embed *w) 4778ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3475{ 4779{
3476 if (expect_false (ev_is_active (w))) 4780 if (expect_false (ev_is_active (w)))
3477 return; 4781 return;
3478 4782
3479 { 4783 {
… …
3500 4804
3501 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
3502} 4806}
3503 4807
3504void 4808void
3505ev_embed_stop (EV_P_ ev_embed *w) 4809ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3506{ 4810{
3507 clear_pending (EV_A_ (W)w); 4811 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4812 if (expect_false (!ev_is_active (w)))
3509 return; 4813 return;
3510 4814
… …
3520} 4824}
3521#endif 4825#endif
3522 4826
3523#if EV_FORK_ENABLE 4827#if EV_FORK_ENABLE
3524void 4828void
3525ev_fork_start (EV_P_ ev_fork *w) 4829ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3526{ 4830{
3527 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
3528 return; 4832 return;
3529 4833
3530 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
… …
3535 4839
3536 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3537} 4841}
3538 4842
3539void 4843void
3540ev_fork_stop (EV_P_ ev_fork *w) 4844ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3541{ 4845{
3542 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
3543 if (expect_false (!ev_is_active (w))) 4847 if (expect_false (!ev_is_active (w)))
3544 return; 4848 return;
3545 4849
… …
3556 4860
3557 EV_FREQUENT_CHECK; 4861 EV_FREQUENT_CHECK;
3558} 4862}
3559#endif 4863#endif
3560 4864
4865#if EV_CLEANUP_ENABLE
4866void
4867ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4868{
4869 if (expect_false (ev_is_active (w)))
4870 return;
4871
4872 EV_FREQUENT_CHECK;
4873
4874 ev_start (EV_A_ (W)w, ++cleanupcnt);
4875 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4876 cleanups [cleanupcnt - 1] = w;
4877
4878 /* cleanup watchers should never keep a refcount on the loop */
4879 ev_unref (EV_A);
4880 EV_FREQUENT_CHECK;
4881}
4882
4883void
4884ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4885{
4886 clear_pending (EV_A_ (W)w);
4887 if (expect_false (!ev_is_active (w)))
4888 return;
4889
4890 EV_FREQUENT_CHECK;
4891 ev_ref (EV_A);
4892
4893 {
4894 int active = ev_active (w);
4895
4896 cleanups [active - 1] = cleanups [--cleanupcnt];
4897 ev_active (cleanups [active - 1]) = active;
4898 }
4899
4900 ev_stop (EV_A_ (W)w);
4901
4902 EV_FREQUENT_CHECK;
4903}
4904#endif
4905
3561#if EV_ASYNC_ENABLE 4906#if EV_ASYNC_ENABLE
3562void 4907void
3563ev_async_start (EV_P_ ev_async *w) 4908ev_async_start (EV_P_ ev_async *w) EV_THROW
3564{ 4909{
3565 if (expect_false (ev_is_active (w))) 4910 if (expect_false (ev_is_active (w)))
3566 return; 4911 return;
3567 4912
3568 w->sent = 0; 4913 w->sent = 0;
… …
3577 4922
3578 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3579} 4924}
3580 4925
3581void 4926void
3582ev_async_stop (EV_P_ ev_async *w) 4927ev_async_stop (EV_P_ ev_async *w) EV_THROW
3583{ 4928{
3584 clear_pending (EV_A_ (W)w); 4929 clear_pending (EV_A_ (W)w);
3585 if (expect_false (!ev_is_active (w))) 4930 if (expect_false (!ev_is_active (w)))
3586 return; 4931 return;
3587 4932
… …
3598 4943
3599 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3600} 4945}
3601 4946
3602void 4947void
3603ev_async_send (EV_P_ ev_async *w) 4948ev_async_send (EV_P_ ev_async *w) EV_THROW
3604{ 4949{
3605 w->sent = 1; 4950 w->sent = 1;
3606 evpipe_write (EV_A_ &async_pending); 4951 evpipe_write (EV_A_ &async_pending);
3607} 4952}
3608#endif 4953#endif
… …
3645 4990
3646 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4991 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3647} 4992}
3648 4993
3649void 4994void
3650ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4995ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3651{ 4996{
3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4997 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3653 4998
3654 if (expect_false (!once)) 4999 if (expect_false (!once))
3655 { 5000 {
… …
3676} 5021}
3677 5022
3678/*****************************************************************************/ 5023/*****************************************************************************/
3679 5024
3680#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
5026ecb_cold
3681void 5027void
3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5028ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3683{ 5029{
3684 int i, j; 5030 int i, j;
3685 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
3686 5032
3687 if (types & (EV_IO | EV_EMBED)) 5033 if (types & (EV_IO | EV_EMBED))
… …
3730 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5076 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3731#endif 5077#endif
3732 5078
3733#if EV_IDLE_ENABLE 5079#if EV_IDLE_ENABLE
3734 if (types & EV_IDLE) 5080 if (types & EV_IDLE)
3735 for (j = NUMPRI; i--; ) 5081 for (j = NUMPRI; j--; )
3736 for (i = idlecnt [j]; i--; ) 5082 for (i = idlecnt [j]; i--; )
3737 cb (EV_A_ EV_IDLE, idles [j][i]); 5083 cb (EV_A_ EV_IDLE, idles [j][i]);
3738#endif 5084#endif
3739 5085
3740#if EV_FORK_ENABLE 5086#if EV_FORK_ENABLE
… …
3793 5139
3794#if EV_MULTIPLICITY 5140#if EV_MULTIPLICITY
3795 #include "ev_wrap.h" 5141 #include "ev_wrap.h"
3796#endif 5142#endif
3797 5143
3798EV_CPP(})
3799

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