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Comparing libev/ev.c (file contents):
Revision 1.360 by root, Sun Oct 24 18:12:41 2010 UTC vs.
Revision 1.476 by root, Fri May 1 17:23:34 2015 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
… …
389/* 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 */
390# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
393# endif 429# endif
394#endif
395
396#if EV_SELECT_IS_WINSOCKET
397# include <winsock.h>
398#endif 430#endif
399 431
400#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
401/* 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 */
402# include <stdint.h> 434# include <stdint.h>
… …
442#else 474#else
443# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
444#endif 476#endif
445 477
446/* 478/*
447 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */ 481 */
454#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 */
455 484
456#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) */
457#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) */
458 487
459#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)
460#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)
461 490
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 0x00010004
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;
462#if __GNUC__ >= 4 546 #if __GNUC__
463# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
464# define noinline __attribute__ ((noinline)) 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
465#else 562#else
466# define expect(expr,value) (expr) 563 #include <inttypes.h>
467# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
469# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
470# 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
471#endif 580 #endif
581#endif
472 582
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#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
654 #if __i386 || __i386__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif ECB_GCC_AMD64
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
664 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
672 #elif (__sparc || __sparc__) && !__sparcv8
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
674 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
675 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
676 #elif defined __s390__ || defined __s390x__
677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
678 #elif defined __mips__
679 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
680 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
682 #elif defined __alpha__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
684 #elif defined __hppa__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
687 #elif defined __ia64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
689 #elif defined __m68k__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
691 #elif defined __m88k__
692 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
693 #elif defined __sh__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
695 #endif
696 #endif
697#endif
698
699#ifndef ECB_MEMORY_FENCE
700 #if ECB_GCC_VERSION(4,7)
701 /* see comment below (stdatomic.h) about the C11 memory model. */
702 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
703 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
704 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
705
706 #elif ECB_CLANG_EXTENSION(c_atomic)
707 /* see comment below (stdatomic.h) about the C11 memory model. */
708 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
709 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
710 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
711
712 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
713 #define ECB_MEMORY_FENCE __sync_synchronize ()
714 #elif _MSC_VER >= 1500 /* VC++ 2008 */
715 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
720 #elif _MSC_VER >= 1400 /* VC++ 2005 */
721 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
722 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
724 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
725 #elif defined _WIN32
726 #include <WinNT.h>
727 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
728 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #include <mbarrier.h>
730 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
731 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
732 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
733 #elif __xlC__
734 #define ECB_MEMORY_FENCE __sync ()
735 #endif
736#endif
737
738#ifndef ECB_MEMORY_FENCE
739 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
740 /* we assume that these memory fences work on all variables/all memory accesses, */
741 /* not just C11 atomics and atomic accesses */
742 #include <stdatomic.h>
743 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
744 /* any fence other than seq_cst, which isn't very efficient for us. */
745 /* Why that is, we don't know - either the C11 memory model is quite useless */
746 /* for most usages, or gcc and clang have a bug */
747 /* I *currently* lean towards the latter, and inefficiently implement */
748 /* all three of ecb's fences as a seq_cst fence */
749 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
750 /* for all __atomic_thread_fence's except seq_cst */
751 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
752 #endif
753#endif
754
755#ifndef ECB_MEMORY_FENCE
756 #if !ECB_AVOID_PTHREADS
757 /*
758 * if you get undefined symbol references to pthread_mutex_lock,
759 * or failure to find pthread.h, then you should implement
760 * the ECB_MEMORY_FENCE operations for your cpu/compiler
761 * OR provide pthread.h and link against the posix thread library
762 * of your system.
763 */
764 #include <pthread.h>
765 #define ECB_NEEDS_PTHREADS 1
766 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
767
768 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
769 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
770 #endif
771#endif
772
773#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
774 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
775#endif
776
777#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
778 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
779#endif
780
781/*****************************************************************************/
782
783#if ECB_CPP
784 #define ecb_inline static inline
785#elif ECB_GCC_VERSION(2,5)
786 #define ecb_inline static __inline__
787#elif ECB_C99
788 #define ecb_inline static inline
789#else
790 #define ecb_inline static
791#endif
792
793#if ECB_GCC_VERSION(3,3)
794 #define ecb_restrict __restrict__
795#elif ECB_C99
796 #define ecb_restrict restrict
797#else
798 #define ecb_restrict
799#endif
800
801typedef int ecb_bool;
802
803#define ECB_CONCAT_(a, b) a ## b
804#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
805#define ECB_STRINGIFY_(a) # a
806#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
807#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
808
809#define ecb_function_ ecb_inline
810
811#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
812 #define ecb_attribute(attrlist) __attribute__ (attrlist)
813#else
814 #define ecb_attribute(attrlist)
815#endif
816
817#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
818 #define ecb_is_constant(expr) __builtin_constant_p (expr)
819#else
820 /* possible C11 impl for integral types
821 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
822 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
823
824 #define ecb_is_constant(expr) 0
825#endif
826
827#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
828 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
829#else
830 #define ecb_expect(expr,value) (expr)
831#endif
832
833#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
834 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
835#else
836 #define ecb_prefetch(addr,rw,locality)
837#endif
838
839/* no emulation for ecb_decltype */
840#if ECB_CPP11
841 // older implementations might have problems with decltype(x)::type, work around it
842 template<class T> struct ecb_decltype_t { typedef T type; };
843 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
844#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
845 #define ecb_decltype(x) __typeof__ (x)
846#endif
847
848#if _MSC_VER >= 1300
849 #define ecb_deprecated __declspec (deprecated)
850#else
851 #define ecb_deprecated ecb_attribute ((__deprecated__))
852#endif
853
854#if _MSC_VER >= 1500
855 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
856#elif ECB_GCC_VERSION(4,5)
857 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
858#else
859 #define ecb_deprecated_message(msg) ecb_deprecated
860#endif
861
862#if _MSC_VER >= 1400
863 #define ecb_noinline __declspec (noinline)
864#else
865 #define ecb_noinline ecb_attribute ((__noinline__))
866#endif
867
868#define ecb_unused ecb_attribute ((__unused__))
869#define ecb_const ecb_attribute ((__const__))
870#define ecb_pure ecb_attribute ((__pure__))
871
872#if ECB_C11 || __IBMC_NORETURN
873 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
874 #define ecb_noreturn _Noreturn
875#elif ECB_CPP11
876 #define ecb_noreturn [[noreturn]]
877#elif _MSC_VER >= 1200
878 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
879 #define ecb_noreturn __declspec (noreturn)
880#else
881 #define ecb_noreturn ecb_attribute ((__noreturn__))
882#endif
883
884#if ECB_GCC_VERSION(4,3)
885 #define ecb_artificial ecb_attribute ((__artificial__))
886 #define ecb_hot ecb_attribute ((__hot__))
887 #define ecb_cold ecb_attribute ((__cold__))
888#else
889 #define ecb_artificial
890 #define ecb_hot
891 #define ecb_cold
892#endif
893
894/* put around conditional expressions if you are very sure that the */
895/* expression is mostly true or mostly false. note that these return */
896/* booleans, not the expression. */
473#define expect_false(expr) expect ((expr) != 0, 0) 897#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
474#define expect_true(expr) expect ((expr) != 0, 1) 898#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
899/* for compatibility to the rest of the world */
900#define ecb_likely(expr) ecb_expect_true (expr)
901#define ecb_unlikely(expr) ecb_expect_false (expr)
902
903/* count trailing zero bits and count # of one bits */
904#if ECB_GCC_VERSION(3,4) \
905 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
906 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
907 && ECB_CLANG_BUILTIN(__builtin_popcount))
908 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
909 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
910 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
911 #define ecb_ctz32(x) __builtin_ctz (x)
912 #define ecb_ctz64(x) __builtin_ctzll (x)
913 #define ecb_popcount32(x) __builtin_popcount (x)
914 /* no popcountll */
915#else
916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
917 ecb_function_ ecb_const int
918 ecb_ctz32 (uint32_t x)
919 {
920 int r = 0;
921
922 x &= ~x + 1; /* this isolates the lowest bit */
923
924#if ECB_branchless_on_i386
925 r += !!(x & 0xaaaaaaaa) << 0;
926 r += !!(x & 0xcccccccc) << 1;
927 r += !!(x & 0xf0f0f0f0) << 2;
928 r += !!(x & 0xff00ff00) << 3;
929 r += !!(x & 0xffff0000) << 4;
930#else
931 if (x & 0xaaaaaaaa) r += 1;
932 if (x & 0xcccccccc) r += 2;
933 if (x & 0xf0f0f0f0) r += 4;
934 if (x & 0xff00ff00) r += 8;
935 if (x & 0xffff0000) r += 16;
936#endif
937
938 return r;
939 }
940
941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz64 (uint64_t x)
944 {
945 int shift = x & 0xffffffffU ? 0 : 32;
946 return ecb_ctz32 (x >> shift) + shift;
947 }
948
949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
950 ecb_function_ ecb_const int
951 ecb_popcount32 (uint32_t x)
952 {
953 x -= (x >> 1) & 0x55555555;
954 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
955 x = ((x >> 4) + x) & 0x0f0f0f0f;
956 x *= 0x01010101;
957
958 return x >> 24;
959 }
960
961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
963 {
964 int r = 0;
965
966 if (x >> 16) { x >>= 16; r += 16; }
967 if (x >> 8) { x >>= 8; r += 8; }
968 if (x >> 4) { x >>= 4; r += 4; }
969 if (x >> 2) { x >>= 2; r += 2; }
970 if (x >> 1) { r += 1; }
971
972 return r;
973 }
974
975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
977 {
978 int r = 0;
979
980 if (x >> 32) { x >>= 32; r += 32; }
981
982 return r + ecb_ld32 (x);
983 }
984#endif
985
986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
987ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
988ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
989ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
990
991ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
992ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
993{
994 return ( (x * 0x0802U & 0x22110U)
995 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
996}
997
998ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
999ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1000{
1001 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1002 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1003 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1004 x = ( x >> 8 ) | ( x << 8);
1005
1006 return x;
1007}
1008
1009ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1010ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1011{
1012 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1013 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1014 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1015 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1016 x = ( x >> 16 ) | ( x << 16);
1017
1018 return x;
1019}
1020
1021/* popcount64 is only available on 64 bit cpus as gcc builtin */
1022/* so for this version we are lazy */
1023ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1024ecb_function_ ecb_const int
1025ecb_popcount64 (uint64_t x)
1026{
1027 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1028}
1029
1030ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1031ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1032ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1033ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1034ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1035ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1036ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1037ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1038
1039ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1040ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1041ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1042ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1043ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1044ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1045ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1046ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1047
1048#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1049 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1050 #define ecb_bswap16(x) __builtin_bswap16 (x)
1051 #else
1052 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1053 #endif
1054 #define ecb_bswap32(x) __builtin_bswap32 (x)
1055 #define ecb_bswap64(x) __builtin_bswap64 (x)
1056#elif _MSC_VER
1057 #include <stdlib.h>
1058 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1059 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1060 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1061#else
1062 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1063 ecb_function_ ecb_const uint16_t
1064 ecb_bswap16 (uint16_t x)
1065 {
1066 return ecb_rotl16 (x, 8);
1067 }
1068
1069 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1070 ecb_function_ ecb_const uint32_t
1071 ecb_bswap32 (uint32_t x)
1072 {
1073 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1074 }
1075
1076 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1077 ecb_function_ ecb_const uint64_t
1078 ecb_bswap64 (uint64_t x)
1079 {
1080 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1081 }
1082#endif
1083
1084#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1085 #define ecb_unreachable() __builtin_unreachable ()
1086#else
1087 /* this seems to work fine, but gcc always emits a warning for it :/ */
1088 ecb_inline ecb_noreturn void ecb_unreachable (void);
1089 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1090#endif
1091
1092/* try to tell the compiler that some condition is definitely true */
1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1094
1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1096ecb_inline ecb_const unsigned char
1097ecb_byteorder_helper (void)
1098{
1099 /* the union code still generates code under pressure in gcc, */
1100 /* but less than using pointers, and always seems to */
1101 /* successfully return a constant. */
1102 /* the reason why we have this horrible preprocessor mess */
1103 /* is to avoid it in all cases, at least on common architectures */
1104 /* or when using a recent enough gcc version (>= 4.6) */
1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1106 return 0x44;
1107#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1108 return 0x44;
1109#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1110 return 0x11;
1111#else
1112 union
1113 {
1114 uint32_t i;
1115 uint8_t c;
1116 } u = { 0x11223344 };
1117 return u.c;
1118#endif
1119}
1120
1121ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1122ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1123ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1124ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1125
1126#if ECB_GCC_VERSION(3,0) || ECB_C99
1127 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1128#else
1129 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1130#endif
1131
1132#if ECB_CPP
1133 template<typename T>
1134 static inline T ecb_div_rd (T val, T div)
1135 {
1136 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1137 }
1138 template<typename T>
1139 static inline T ecb_div_ru (T val, T div)
1140 {
1141 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1142 }
1143#else
1144 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1145 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1146#endif
1147
1148#if ecb_cplusplus_does_not_suck
1149 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1150 template<typename T, int N>
1151 static inline int ecb_array_length (const T (&arr)[N])
1152 {
1153 return N;
1154 }
1155#else
1156 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1157#endif
1158
1159/*******************************************************************************/
1160/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1161
1162/* basically, everything uses "ieee pure-endian" floating point numbers */
1163/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1164#if 0 \
1165 || __i386 || __i386__ \
1166 || ECB_GCC_AMD64 \
1167 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1168 || defined __s390__ || defined __s390x__ \
1169 || defined __mips__ \
1170 || defined __alpha__ \
1171 || defined __hppa__ \
1172 || defined __ia64__ \
1173 || defined __m68k__ \
1174 || defined __m88k__ \
1175 || defined __sh__ \
1176 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1177 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1178 || defined __aarch64__
1179 #define ECB_STDFP 1
1180 #include <string.h> /* for memcpy */
1181#else
1182 #define ECB_STDFP 0
1183#endif
1184
1185#ifndef ECB_NO_LIBM
1186
1187 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1188
1189 /* only the oldest of old doesn't have this one. solaris. */
1190 #ifdef INFINITY
1191 #define ECB_INFINITY INFINITY
1192 #else
1193 #define ECB_INFINITY HUGE_VAL
1194 #endif
1195
1196 #ifdef NAN
1197 #define ECB_NAN NAN
1198 #else
1199 #define ECB_NAN ECB_INFINITY
1200 #endif
1201
1202 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1203 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1204 #define ecb_frexpf(x,e) frexpf ((x), (e))
1205 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif
1209
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1227 /* convert a float to ieee single/binary32 */
1228 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1229 ecb_function_ ecb_const uint32_t
1230 ecb_float_to_binary32 (float x)
1231 {
1232 uint32_t r;
1233
1234 #if ECB_STDFP
1235 memcpy (&r, &x, 4);
1236 #else
1237 /* slow emulation, works for anything but -0 */
1238 uint32_t m;
1239 int e;
1240
1241 if (x == 0e0f ) return 0x00000000U;
1242 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1243 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1244 if (x != x ) return 0x7fbfffffU;
1245
1246 m = ecb_frexpf (x, &e) * 0x1000000U;
1247
1248 r = m & 0x80000000U;
1249
1250 if (r)
1251 m = -m;
1252
1253 if (e <= -126)
1254 {
1255 m &= 0xffffffU;
1256 m >>= (-125 - e);
1257 e = -126;
1258 }
1259
1260 r |= (e + 126) << 23;
1261 r |= m & 0x7fffffU;
1262 #endif
1263
1264 return r;
1265 }
1266
1267 /* converts an ieee single/binary32 to a float */
1268 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1269 ecb_function_ ecb_const float
1270 ecb_binary32_to_float (uint32_t x)
1271 {
1272 float r;
1273
1274 #if ECB_STDFP
1275 memcpy (&r, &x, 4);
1276 #else
1277 /* emulation, only works for normals and subnormals and +0 */
1278 int neg = x >> 31;
1279 int e = (x >> 23) & 0xffU;
1280
1281 x &= 0x7fffffU;
1282
1283 if (e)
1284 x |= 0x800000U;
1285 else
1286 e = 1;
1287
1288 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1289 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1290
1291 r = neg ? -r : r;
1292 #endif
1293
1294 return r;
1295 }
1296
1297 /* convert a double to ieee double/binary64 */
1298 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1299 ecb_function_ ecb_const uint64_t
1300 ecb_double_to_binary64 (double x)
1301 {
1302 uint64_t r;
1303
1304 #if ECB_STDFP
1305 memcpy (&r, &x, 8);
1306 #else
1307 /* slow emulation, works for anything but -0 */
1308 uint64_t m;
1309 int e;
1310
1311 if (x == 0e0 ) return 0x0000000000000000U;
1312 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1313 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1314 if (x != x ) return 0X7ff7ffffffffffffU;
1315
1316 m = frexp (x, &e) * 0x20000000000000U;
1317
1318 r = m & 0x8000000000000000;;
1319
1320 if (r)
1321 m = -m;
1322
1323 if (e <= -1022)
1324 {
1325 m &= 0x1fffffffffffffU;
1326 m >>= (-1021 - e);
1327 e = -1022;
1328 }
1329
1330 r |= ((uint64_t)(e + 1022)) << 52;
1331 r |= m & 0xfffffffffffffU;
1332 #endif
1333
1334 return r;
1335 }
1336
1337 /* converts an ieee double/binary64 to a double */
1338 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1339 ecb_function_ ecb_const double
1340 ecb_binary64_to_double (uint64_t x)
1341 {
1342 double r;
1343
1344 #if ECB_STDFP
1345 memcpy (&r, &x, 8);
1346 #else
1347 /* emulation, only works for normals and subnormals and +0 */
1348 int neg = x >> 63;
1349 int e = (x >> 52) & 0x7ffU;
1350
1351 x &= 0xfffffffffffffU;
1352
1353 if (e)
1354 x |= 0x10000000000000U;
1355 else
1356 e = 1;
1357
1358 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1359 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1360
1361 r = neg ? -r : r;
1362 #endif
1363
1364 return r;
1365 }
1366
1367#endif
1368
1369#endif
1370
1371/* ECB.H END */
1372
1373#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1374/* if your architecture doesn't need memory fences, e.g. because it is
1375 * single-cpu/core, or if you use libev in a project that doesn't use libev
1376 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1377 * libev, in which cases the memory fences become nops.
1378 * alternatively, you can remove this #error and link against libpthread,
1379 * which will then provide the memory fences.
1380 */
1381# error "memory fences not defined for your architecture, please report"
1382#endif
1383
1384#ifndef ECB_MEMORY_FENCE
1385# define ECB_MEMORY_FENCE do { } while (0)
1386# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1387# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1388#endif
1389
1390#define expect_false(cond) ecb_expect_false (cond)
1391#define expect_true(cond) ecb_expect_true (cond)
1392#define noinline ecb_noinline
1393
475#define inline_size static inline 1394#define inline_size ecb_inline
476 1395
477#if EV_FEATURE_CODE 1396#if EV_FEATURE_CODE
478# define inline_speed static inline 1397# define inline_speed ecb_inline
479#else 1398#else
480# define inline_speed static noinline 1399# define inline_speed static noinline
481#endif 1400#endif
482 1401
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1402#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
522# include "ev_win32.c" 1441# include "ev_win32.c"
523#endif 1442#endif
524 1443
525/*****************************************************************************/ 1444/*****************************************************************************/
526 1445
1446/* define a suitable floor function (only used by periodics atm) */
1447
1448#if EV_USE_FLOOR
1449# include <math.h>
1450# define ev_floor(v) floor (v)
1451#else
1452
1453#include <float.h>
1454
1455/* a floor() replacement function, should be independent of ev_tstamp type */
1456static ev_tstamp noinline
1457ev_floor (ev_tstamp v)
1458{
1459 /* the choice of shift factor is not terribly important */
1460#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1461 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1462#else
1463 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1464#endif
1465
1466 /* argument too large for an unsigned long? */
1467 if (expect_false (v >= shift))
1468 {
1469 ev_tstamp f;
1470
1471 if (v == v - 1.)
1472 return v; /* very large number */
1473
1474 f = shift * ev_floor (v * (1. / shift));
1475 return f + ev_floor (v - f);
1476 }
1477
1478 /* special treatment for negative args? */
1479 if (expect_false (v < 0.))
1480 {
1481 ev_tstamp f = -ev_floor (-v);
1482
1483 return f - (f == v ? 0 : 1);
1484 }
1485
1486 /* fits into an unsigned long */
1487 return (unsigned long)v;
1488}
1489
1490#endif
1491
1492/*****************************************************************************/
1493
527#ifdef __linux 1494#ifdef __linux
528# include <sys/utsname.h> 1495# include <sys/utsname.h>
529#endif 1496#endif
530 1497
531static unsigned int noinline 1498static unsigned int noinline ecb_cold
532ev_linux_version (void) 1499ev_linux_version (void)
533{ 1500{
534#ifdef __linux 1501#ifdef __linux
535 unsigned int v = 0; 1502 unsigned int v = 0;
536 struct utsname buf; 1503 struct utsname buf;
… …
565} 1532}
566 1533
567/*****************************************************************************/ 1534/*****************************************************************************/
568 1535
569#if EV_AVOID_STDIO 1536#if EV_AVOID_STDIO
570static void noinline 1537static void noinline ecb_cold
571ev_printerr (const char *msg) 1538ev_printerr (const char *msg)
572{ 1539{
573 write (STDERR_FILENO, msg, strlen (msg)); 1540 write (STDERR_FILENO, msg, strlen (msg));
574} 1541}
575#endif 1542#endif
576 1543
577static void (*syserr_cb)(const char *msg); 1544static void (*syserr_cb)(const char *msg) EV_THROW;
578 1545
579void 1546void ecb_cold
580ev_set_syserr_cb (void (*cb)(const char *msg)) 1547ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
581{ 1548{
582 syserr_cb = cb; 1549 syserr_cb = cb;
583} 1550}
584 1551
585static void noinline 1552static void noinline ecb_cold
586ev_syserr (const char *msg) 1553ev_syserr (const char *msg)
587{ 1554{
588 if (!msg) 1555 if (!msg)
589 msg = "(libev) system error"; 1556 msg = "(libev) system error";
590 1557
591 if (syserr_cb) 1558 if (syserr_cb)
592 syserr_cb (msg); 1559 syserr_cb (msg);
593 else 1560 else
594 { 1561 {
595#if EV_AVOID_STDIO 1562#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg); 1563 ev_printerr (msg);
599 ev_printerr (": "); 1564 ev_printerr (": ");
600 ev_printerr (err); 1565 ev_printerr (strerror (errno));
601 ev_printerr ("\n"); 1566 ev_printerr ("\n");
602#else 1567#else
603 perror (msg); 1568 perror (msg);
604#endif 1569#endif
605 abort (); 1570 abort ();
606 } 1571 }
607} 1572}
608 1573
609static void * 1574static void *
610ev_realloc_emul (void *ptr, long size) 1575ev_realloc_emul (void *ptr, long size) EV_THROW
611{ 1576{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly 1577 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and 1578 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here. 1579 * the single unix specification, so work around them here.
1580 * recently, also (at least) fedora and debian started breaking it,
1581 * despite documenting it otherwise.
618 */ 1582 */
619 1583
620 if (size) 1584 if (size)
621 return realloc (ptr, size); 1585 return realloc (ptr, size);
622 1586
623 free (ptr); 1587 free (ptr);
624 return 0; 1588 return 0;
625#endif
626} 1589}
627 1590
628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1591static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
629 1592
630void 1593void ecb_cold
631ev_set_allocator (void *(*cb)(void *ptr, long size)) 1594ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
632{ 1595{
633 alloc = cb; 1596 alloc = cb;
634} 1597}
635 1598
636inline_speed void * 1599inline_speed void *
… …
639 ptr = alloc (ptr, size); 1602 ptr = alloc (ptr, size);
640 1603
641 if (!ptr && size) 1604 if (!ptr && size)
642 { 1605 {
643#if EV_AVOID_STDIO 1606#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1607 ev_printerr ("(libev) memory allocation failed, aborting.\n");
645#else 1608#else
646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1609 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
647#endif 1610#endif
648 abort (); 1611 abort ();
649 } 1612 }
650 1613
651 return ptr; 1614 return ptr;
… …
724 #undef VAR 1687 #undef VAR
725 }; 1688 };
726 #include "ev_wrap.h" 1689 #include "ev_wrap.h"
727 1690
728 static struct ev_loop default_loop_struct; 1691 static struct ev_loop default_loop_struct;
729 struct ev_loop *ev_default_loop_ptr; 1692 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
730 1693
731#else 1694#else
732 1695
733 ev_tstamp ev_rt_now; 1696 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
734 #define VAR(name,decl) static decl; 1697 #define VAR(name,decl) static decl;
735 #include "ev_vars.h" 1698 #include "ev_vars.h"
736 #undef VAR 1699 #undef VAR
737 1700
738 static int ev_default_loop_ptr; 1701 static int ev_default_loop_ptr;
… …
753 1716
754/*****************************************************************************/ 1717/*****************************************************************************/
755 1718
756#ifndef EV_HAVE_EV_TIME 1719#ifndef EV_HAVE_EV_TIME
757ev_tstamp 1720ev_tstamp
758ev_time (void) 1721ev_time (void) EV_THROW
759{ 1722{
760#if EV_USE_REALTIME 1723#if EV_USE_REALTIME
761 if (expect_true (have_realtime)) 1724 if (expect_true (have_realtime))
762 { 1725 {
763 struct timespec ts; 1726 struct timespec ts;
… …
787 return ev_time (); 1750 return ev_time ();
788} 1751}
789 1752
790#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
791ev_tstamp 1754ev_tstamp
792ev_now (EV_P) 1755ev_now (EV_P) EV_THROW
793{ 1756{
794 return ev_rt_now; 1757 return ev_rt_now;
795} 1758}
796#endif 1759#endif
797 1760
798void 1761void
799ev_sleep (ev_tstamp delay) 1762ev_sleep (ev_tstamp delay) EV_THROW
800{ 1763{
801 if (delay > 0.) 1764 if (delay > 0.)
802 { 1765 {
803#if EV_USE_NANOSLEEP 1766#if EV_USE_NANOSLEEP
804 struct timespec ts; 1767 struct timespec ts;
805 1768
806 EV_TS_SET (ts, delay); 1769 EV_TS_SET (ts, delay);
807 nanosleep (&ts, 0); 1770 nanosleep (&ts, 0);
808#elif defined(_WIN32) 1771#elif defined _WIN32
809 Sleep ((unsigned long)(delay * 1e3)); 1772 Sleep ((unsigned long)(delay * 1e3));
810#else 1773#else
811 struct timeval tv; 1774 struct timeval tv;
812 1775
813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
832 1795
833 do 1796 do
834 ncur <<= 1; 1797 ncur <<= 1;
835 while (cnt > ncur); 1798 while (cnt > ncur);
836 1799
837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
839 { 1802 {
840 ncur *= elem; 1803 ncur *= elem;
841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
842 ncur = ncur - sizeof (void *) * 4; 1805 ncur = ncur - sizeof (void *) * 4;
… …
844 } 1807 }
845 1808
846 return ncur; 1809 return ncur;
847} 1810}
848 1811
849static noinline void * 1812static void * noinline ecb_cold
850array_realloc (int elem, void *base, int *cur, int cnt) 1813array_realloc (int elem, void *base, int *cur, int cnt)
851{ 1814{
852 *cur = array_nextsize (elem, *cur, cnt); 1815 *cur = array_nextsize (elem, *cur, cnt);
853 return ev_realloc (base, elem * *cur); 1816 return ev_realloc (base, elem * *cur);
854} 1817}
… …
857 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1820 memset ((void *)(base), 0, sizeof (*(base)) * (count))
858 1821
859#define array_needsize(type,base,cur,cnt,init) \ 1822#define array_needsize(type,base,cur,cnt,init) \
860 if (expect_false ((cnt) > (cur))) \ 1823 if (expect_false ((cnt) > (cur))) \
861 { \ 1824 { \
862 int ocur_ = (cur); \ 1825 int ecb_unused ocur_ = (cur); \
863 (base) = (type *)array_realloc \ 1826 (base) = (type *)array_realloc \
864 (sizeof (type), (base), &(cur), (cnt)); \ 1827 (sizeof (type), (base), &(cur), (cnt)); \
865 init ((base) + (ocur_), (cur) - ocur_); \ 1828 init ((base) + (ocur_), (cur) - ocur_); \
866 } 1829 }
867 1830
… …
885pendingcb (EV_P_ ev_prepare *w, int revents) 1848pendingcb (EV_P_ ev_prepare *w, int revents)
886{ 1849{
887} 1850}
888 1851
889void noinline 1852void noinline
890ev_feed_event (EV_P_ void *w, int revents) 1853ev_feed_event (EV_P_ void *w, int revents) EV_THROW
891{ 1854{
892 W w_ = (W)w; 1855 W w_ = (W)w;
893 int pri = ABSPRI (w_); 1856 int pri = ABSPRI (w_);
894 1857
895 if (expect_false (w_->pending)) 1858 if (expect_false (w_->pending))
… …
899 w_->pending = ++pendingcnt [pri]; 1862 w_->pending = ++pendingcnt [pri];
900 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
901 pendings [pri][w_->pending - 1].w = w_; 1864 pendings [pri][w_->pending - 1].w = w_;
902 pendings [pri][w_->pending - 1].events = revents; 1865 pendings [pri][w_->pending - 1].events = revents;
903 } 1866 }
1867
1868 pendingpri = NUMPRI - 1;
904} 1869}
905 1870
906inline_speed void 1871inline_speed void
907feed_reverse (EV_P_ W w) 1872feed_reverse (EV_P_ W w)
908{ 1873{
… …
954 if (expect_true (!anfd->reify)) 1919 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents); 1920 fd_event_nocheck (EV_A_ fd, revents);
956} 1921}
957 1922
958void 1923void
959ev_feed_fd_event (EV_P_ int fd, int revents) 1924ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
960{ 1925{
961 if (fd >= 0 && fd < anfdmax) 1926 if (fd >= 0 && fd < anfdmax)
962 fd_event_nocheck (EV_A_ fd, revents); 1927 fd_event_nocheck (EV_A_ fd, revents);
963} 1928}
964 1929
… …
967inline_size void 1932inline_size void
968fd_reify (EV_P) 1933fd_reify (EV_P)
969{ 1934{
970 int i; 1935 int i;
971 1936
1937#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1938 for (i = 0; i < fdchangecnt; ++i)
1939 {
1940 int fd = fdchanges [i];
1941 ANFD *anfd = anfds + fd;
1942
1943 if (anfd->reify & EV__IOFDSET && anfd->head)
1944 {
1945 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1946
1947 if (handle != anfd->handle)
1948 {
1949 unsigned long arg;
1950
1951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1952
1953 /* handle changed, but fd didn't - we need to do it in two steps */
1954 backend_modify (EV_A_ fd, anfd->events, 0);
1955 anfd->events = 0;
1956 anfd->handle = handle;
1957 }
1958 }
1959 }
1960#endif
1961
972 for (i = 0; i < fdchangecnt; ++i) 1962 for (i = 0; i < fdchangecnt; ++i)
973 { 1963 {
974 int fd = fdchanges [i]; 1964 int fd = fdchanges [i];
975 ANFD *anfd = anfds + fd; 1965 ANFD *anfd = anfds + fd;
976 ev_io *w; 1966 ev_io *w;
… …
978 unsigned char o_events = anfd->events; 1968 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify; 1969 unsigned char o_reify = anfd->reify;
980 1970
981 anfd->reify = 0; 1971 anfd->reify = 0;
982 1972
983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
984 if (o_reify & EV__IOFDSET)
985 {
986 unsigned long arg;
987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
990 }
991#endif
992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1973 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
994 { 1974 {
995 anfd->events = 0; 1975 anfd->events = 0;
996 1976
997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1977 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1022 fdchanges [fdchangecnt - 1] = fd; 2002 fdchanges [fdchangecnt - 1] = fd;
1023 } 2003 }
1024} 2004}
1025 2005
1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2006/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void 2007inline_speed void ecb_cold
1028fd_kill (EV_P_ int fd) 2008fd_kill (EV_P_ int fd)
1029{ 2009{
1030 ev_io *w; 2010 ev_io *w;
1031 2011
1032 while ((w = (ev_io *)anfds [fd].head)) 2012 while ((w = (ev_io *)anfds [fd].head))
… …
1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2015 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1036 } 2016 }
1037} 2017}
1038 2018
1039/* check whether the given fd is actually valid, for error recovery */ 2019/* check whether the given fd is actually valid, for error recovery */
1040inline_size int 2020inline_size int ecb_cold
1041fd_valid (int fd) 2021fd_valid (int fd)
1042{ 2022{
1043#ifdef _WIN32 2023#ifdef _WIN32
1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2024 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1045#else 2025#else
1046 return fcntl (fd, F_GETFD) != -1; 2026 return fcntl (fd, F_GETFD) != -1;
1047#endif 2027#endif
1048} 2028}
1049 2029
1050/* called on EBADF to verify fds */ 2030/* called on EBADF to verify fds */
1051static void noinline 2031static void noinline ecb_cold
1052fd_ebadf (EV_P) 2032fd_ebadf (EV_P)
1053{ 2033{
1054 int fd; 2034 int fd;
1055 2035
1056 for (fd = 0; fd < anfdmax; ++fd) 2036 for (fd = 0; fd < anfdmax; ++fd)
… …
1058 if (!fd_valid (fd) && errno == EBADF) 2038 if (!fd_valid (fd) && errno == EBADF)
1059 fd_kill (EV_A_ fd); 2039 fd_kill (EV_A_ fd);
1060} 2040}
1061 2041
1062/* called on ENOMEM in select/poll to kill some fds and retry */ 2042/* called on ENOMEM in select/poll to kill some fds and retry */
1063static void noinline 2043static void noinline ecb_cold
1064fd_enomem (EV_P) 2044fd_enomem (EV_P)
1065{ 2045{
1066 int fd; 2046 int fd;
1067 2047
1068 for (fd = anfdmax; fd--; ) 2048 for (fd = anfdmax; fd--; )
… …
1263 2243
1264/*****************************************************************************/ 2244/*****************************************************************************/
1265 2245
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2246#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267 2247
1268static void noinline 2248static void noinline ecb_cold
1269evpipe_init (EV_P) 2249evpipe_init (EV_P)
1270{ 2250{
1271 if (!ev_is_active (&pipe_w)) 2251 if (!ev_is_active (&pipe_w))
1272 { 2252 {
2253 int fds [2];
2254
1273# if EV_USE_EVENTFD 2255# if EV_USE_EVENTFD
2256 fds [0] = -1;
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2257 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL) 2258 if (fds [1] < 0 && errno == EINVAL)
1276 evfd = eventfd (0, 0); 2259 fds [1] = eventfd (0, 0);
1277 2260
1278 if (evfd >= 0) 2261 if (fds [1] < 0)
2262# endif
1279 { 2263 {
2264 while (pipe (fds))
2265 ev_syserr ("(libev) error creating signal/async pipe");
2266
2267 fd_intern (fds [0]);
2268 }
2269
1280 evpipe [0] = -1; 2270 evpipe [0] = fds [0];
1281 fd_intern (evfd); /* doing it twice doesn't hurt */ 2271
1282 ev_io_set (&pipe_w, evfd, EV_READ); 2272 if (evpipe [1] < 0)
2273 evpipe [1] = fds [1]; /* first call, set write fd */
2274 else
2275 {
2276 /* on subsequent calls, do not change evpipe [1] */
2277 /* so that evpipe_write can always rely on its value. */
2278 /* this branch does not do anything sensible on windows, */
2279 /* so must not be executed on windows */
2280
2281 dup2 (fds [1], evpipe [1]);
2282 close (fds [1]);
2283 }
2284
2285 fd_intern (evpipe [1]);
2286
2287 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2288 ev_io_start (EV_A_ &pipe_w);
2289 ev_unref (EV_A); /* watcher should not keep loop alive */
2290 }
2291}
2292
2293inline_speed void
2294evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2295{
2296 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2297
2298 if (expect_true (*flag))
2299 return;
2300
2301 *flag = 1;
2302 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2303
2304 pipe_write_skipped = 1;
2305
2306 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2307
2308 if (pipe_write_wanted)
2309 {
2310 int old_errno;
2311
2312 pipe_write_skipped = 0;
2313 ECB_MEMORY_FENCE_RELEASE;
2314
2315 old_errno = errno; /* save errno because write will clobber it */
2316
2317#if EV_USE_EVENTFD
2318 if (evpipe [0] < 0)
2319 {
2320 uint64_t counter = 1;
2321 write (evpipe [1], &counter, sizeof (uint64_t));
1283 } 2322 }
1284 else 2323 else
1285# endif 2324#endif
1286 { 2325 {
1287 while (pipe (evpipe)) 2326#ifdef _WIN32
1288 ev_syserr ("(libev) error creating signal/async pipe"); 2327 WSABUF buf;
1289 2328 DWORD sent;
1290 fd_intern (evpipe [0]); 2329 buf.buf = &buf;
1291 fd_intern (evpipe [1]); 2330 buf.len = 1;
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2331 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2332#else
2333 write (evpipe [1], &(evpipe [1]), 1);
2334#endif
1293 } 2335 }
1294
1295 ev_io_start (EV_A_ &pipe_w);
1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1297 }
1298}
1299
1300inline_size void
1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1302{
1303 if (!*flag)
1304 {
1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1307
1308 *flag = 1;
1309
1310#if EV_USE_EVENTFD
1311 if (evfd >= 0)
1312 {
1313 uint64_t counter = 1;
1314 write (evfd, &counter, sizeof (uint64_t));
1315 }
1316 else
1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1323 write (evpipe [1], &dummy, 1);
1324 2336
1325 errno = old_errno; 2337 errno = old_errno;
1326 } 2338 }
1327} 2339}
1328 2340
… …
1331static void 2343static void
1332pipecb (EV_P_ ev_io *iow, int revents) 2344pipecb (EV_P_ ev_io *iow, int revents)
1333{ 2345{
1334 int i; 2346 int i;
1335 2347
2348 if (revents & EV_READ)
2349 {
1336#if EV_USE_EVENTFD 2350#if EV_USE_EVENTFD
1337 if (evfd >= 0) 2351 if (evpipe [0] < 0)
1338 { 2352 {
1339 uint64_t counter; 2353 uint64_t counter;
1340 read (evfd, &counter, sizeof (uint64_t)); 2354 read (evpipe [1], &counter, sizeof (uint64_t));
1341 } 2355 }
1342 else 2356 else
1343#endif 2357#endif
1344 { 2358 {
1345 char dummy; 2359 char dummy[4];
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2360#ifdef _WIN32
2361 WSABUF buf;
2362 DWORD recvd;
2363 DWORD flags = 0;
2364 buf.buf = dummy;
2365 buf.len = sizeof (dummy);
2366 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2367#else
1347 read (evpipe [0], &dummy, 1); 2368 read (evpipe [0], &dummy, sizeof (dummy));
2369#endif
2370 }
1348 } 2371 }
1349 2372
2373 pipe_write_skipped = 0;
2374
2375 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2376
2377#if EV_SIGNAL_ENABLE
1350 if (sig_pending) 2378 if (sig_pending)
1351 { 2379 {
1352 sig_pending = 0; 2380 sig_pending = 0;
2381
2382 ECB_MEMORY_FENCE;
1353 2383
1354 for (i = EV_NSIG - 1; i--; ) 2384 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending)) 2385 if (expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1); 2386 ev_feed_signal_event (EV_A_ i + 1);
1357 } 2387 }
2388#endif
1358 2389
1359#if EV_ASYNC_ENABLE 2390#if EV_ASYNC_ENABLE
1360 if (async_pending) 2391 if (async_pending)
1361 { 2392 {
1362 async_pending = 0; 2393 async_pending = 0;
2394
2395 ECB_MEMORY_FENCE;
1363 2396
1364 for (i = asynccnt; i--; ) 2397 for (i = asynccnt; i--; )
1365 if (asyncs [i]->sent) 2398 if (asyncs [i]->sent)
1366 { 2399 {
1367 asyncs [i]->sent = 0; 2400 asyncs [i]->sent = 0;
2401 ECB_MEMORY_FENCE_RELEASE;
1368 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2402 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1369 } 2403 }
1370 } 2404 }
1371#endif 2405#endif
1372} 2406}
1373 2407
1374/*****************************************************************************/ 2408/*****************************************************************************/
1375 2409
2410void
2411ev_feed_signal (int signum) EV_THROW
2412{
2413#if EV_MULTIPLICITY
2414 EV_P;
2415 ECB_MEMORY_FENCE_ACQUIRE;
2416 EV_A = signals [signum - 1].loop;
2417
2418 if (!EV_A)
2419 return;
2420#endif
2421
2422 signals [signum - 1].pending = 1;
2423 evpipe_write (EV_A_ &sig_pending);
2424}
2425
1376static void 2426static void
1377ev_sighandler (int signum) 2427ev_sighandler (int signum)
1378{ 2428{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32 2429#ifdef _WIN32
1384 signal (signum, ev_sighandler); 2430 signal (signum, ev_sighandler);
1385#endif 2431#endif
1386 2432
1387 signals [signum - 1].pending = 1; 2433 ev_feed_signal (signum);
1388 evpipe_write (EV_A_ &sig_pending);
1389} 2434}
1390 2435
1391void noinline 2436void noinline
1392ev_feed_signal_event (EV_P_ int signum) 2437ev_feed_signal_event (EV_P_ int signum) EV_THROW
1393{ 2438{
1394 WL w; 2439 WL w;
1395 2440
1396 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2441 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1397 return; 2442 return;
1398 2443
1399 --signum; 2444 --signum;
1400 2445
1401#if EV_MULTIPLICITY 2446#if EV_MULTIPLICITY
… …
1405 if (expect_false (signals [signum].loop != EV_A)) 2450 if (expect_false (signals [signum].loop != EV_A))
1406 return; 2451 return;
1407#endif 2452#endif
1408 2453
1409 signals [signum].pending = 0; 2454 signals [signum].pending = 0;
2455 ECB_MEMORY_FENCE_RELEASE;
1410 2456
1411 for (w = signals [signum].head; w; w = w->next) 2457 for (w = signals [signum].head; w; w = w->next)
1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2458 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1413} 2459}
1414 2460
… …
1512#endif 2558#endif
1513#if EV_USE_SELECT 2559#if EV_USE_SELECT
1514# include "ev_select.c" 2560# include "ev_select.c"
1515#endif 2561#endif
1516 2562
1517int 2563int ecb_cold
1518ev_version_major (void) 2564ev_version_major (void) EV_THROW
1519{ 2565{
1520 return EV_VERSION_MAJOR; 2566 return EV_VERSION_MAJOR;
1521} 2567}
1522 2568
1523int 2569int ecb_cold
1524ev_version_minor (void) 2570ev_version_minor (void) EV_THROW
1525{ 2571{
1526 return EV_VERSION_MINOR; 2572 return EV_VERSION_MINOR;
1527} 2573}
1528 2574
1529/* return true if we are running with elevated privileges and should ignore env variables */ 2575/* return true if we are running with elevated privileges and should ignore env variables */
1530int inline_size 2576int inline_size ecb_cold
1531enable_secure (void) 2577enable_secure (void)
1532{ 2578{
1533#ifdef _WIN32 2579#ifdef _WIN32
1534 return 0; 2580 return 0;
1535#else 2581#else
1536 return getuid () != geteuid () 2582 return getuid () != geteuid ()
1537 || getgid () != getegid (); 2583 || getgid () != getegid ();
1538#endif 2584#endif
1539} 2585}
1540 2586
1541unsigned int 2587unsigned int ecb_cold
1542ev_supported_backends (void) 2588ev_supported_backends (void) EV_THROW
1543{ 2589{
1544 unsigned int flags = 0; 2590 unsigned int flags = 0;
1545 2591
1546 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2592 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1547 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2593 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1550 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2596 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1551 2597
1552 return flags; 2598 return flags;
1553} 2599}
1554 2600
1555unsigned int 2601unsigned int ecb_cold
1556ev_recommended_backends (void) 2602ev_recommended_backends (void) EV_THROW
1557{ 2603{
1558 unsigned int flags = ev_supported_backends (); 2604 unsigned int flags = ev_supported_backends ();
1559 2605
1560#ifndef __NetBSD__ 2606#ifndef __NetBSD__
1561 /* kqueue is borked on everything but netbsd apparently */ 2607 /* kqueue is borked on everything but netbsd apparently */
… …
1572#endif 2618#endif
1573 2619
1574 return flags; 2620 return flags;
1575} 2621}
1576 2622
1577unsigned int 2623unsigned int ecb_cold
1578ev_embeddable_backends (void) 2624ev_embeddable_backends (void) EV_THROW
1579{ 2625{
1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2626 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1581 2627
1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2628 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2629 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1585 2631
1586 return flags; 2632 return flags;
1587} 2633}
1588 2634
1589unsigned int 2635unsigned int
1590ev_backend (EV_P) 2636ev_backend (EV_P) EV_THROW
1591{ 2637{
1592 return backend; 2638 return backend;
1593} 2639}
1594 2640
1595#if EV_FEATURE_API 2641#if EV_FEATURE_API
1596unsigned int 2642unsigned int
1597ev_iteration (EV_P) 2643ev_iteration (EV_P) EV_THROW
1598{ 2644{
1599 return loop_count; 2645 return loop_count;
1600} 2646}
1601 2647
1602unsigned int 2648unsigned int
1603ev_depth (EV_P) 2649ev_depth (EV_P) EV_THROW
1604{ 2650{
1605 return loop_depth; 2651 return loop_depth;
1606} 2652}
1607 2653
1608void 2654void
1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2655ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1610{ 2656{
1611 io_blocktime = interval; 2657 io_blocktime = interval;
1612} 2658}
1613 2659
1614void 2660void
1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2661ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1616{ 2662{
1617 timeout_blocktime = interval; 2663 timeout_blocktime = interval;
1618} 2664}
1619 2665
1620void 2666void
1621ev_set_userdata (EV_P_ void *data) 2667ev_set_userdata (EV_P_ void *data) EV_THROW
1622{ 2668{
1623 userdata = data; 2669 userdata = data;
1624} 2670}
1625 2671
1626void * 2672void *
1627ev_userdata (EV_P) 2673ev_userdata (EV_P) EV_THROW
1628{ 2674{
1629 return userdata; 2675 return userdata;
1630} 2676}
1631 2677
2678void
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1633{ 2680{
1634 invoke_cb = invoke_pending_cb; 2681 invoke_cb = invoke_pending_cb;
1635} 2682}
1636 2683
2684void
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2685ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1638{ 2686{
1639 release_cb = release; 2687 release_cb = release;
1640 acquire_cb = acquire; 2688 acquire_cb = acquire;
1641} 2689}
1642#endif 2690#endif
1643 2691
1644/* initialise a loop structure, must be zero-initialised */ 2692/* initialise a loop structure, must be zero-initialised */
1645static void noinline 2693static void noinline ecb_cold
1646loop_init (EV_P_ unsigned int flags) 2694loop_init (EV_P_ unsigned int flags) EV_THROW
1647{ 2695{
1648 if (!backend) 2696 if (!backend)
1649 { 2697 {
2698 origflags = flags;
2699
1650#if EV_USE_REALTIME 2700#if EV_USE_REALTIME
1651 if (!have_realtime) 2701 if (!have_realtime)
1652 { 2702 {
1653 struct timespec ts; 2703 struct timespec ts;
1654 2704
… …
1676 if (!(flags & EVFLAG_NOENV) 2726 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure () 2727 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS")) 2728 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS")); 2729 flags = atoi (getenv ("LIBEV_FLAGS"));
1680 2730
1681 ev_rt_now = ev_time (); 2731 ev_rt_now = ev_time ();
1682 mn_now = get_clock (); 2732 mn_now = get_clock ();
1683 now_floor = mn_now; 2733 now_floor = mn_now;
1684 rtmn_diff = ev_rt_now - mn_now; 2734 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API 2735#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending; 2736 invoke_cb = ev_invoke_pending;
1687#endif 2737#endif
1688 2738
1689 io_blocktime = 0.; 2739 io_blocktime = 0.;
1690 timeout_blocktime = 0.; 2740 timeout_blocktime = 0.;
1691 backend = 0; 2741 backend = 0;
1692 backend_fd = -1; 2742 backend_fd = -1;
1693 sig_pending = 0; 2743 sig_pending = 0;
1694#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1695 async_pending = 0; 2745 async_pending = 0;
1696#endif 2746#endif
2747 pipe_write_skipped = 0;
2748 pipe_write_wanted = 0;
2749 evpipe [0] = -1;
2750 evpipe [1] = -1;
1697#if EV_USE_INOTIFY 2751#if EV_USE_INOTIFY
1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2752 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1699#endif 2753#endif
1700#if EV_USE_SIGNALFD 2754#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2755 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif 2756#endif
1703 2757
1704 if (!(flags & 0x0000ffffU)) 2758 if (!(flags & EVBACKEND_MASK))
1705 flags |= ev_recommended_backends (); 2759 flags |= ev_recommended_backends ();
1706 2760
1707#if EV_USE_IOCP 2761#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2762 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif 2763#endif
… …
1731#endif 2785#endif
1732 } 2786 }
1733} 2787}
1734 2788
1735/* free up a loop structure */ 2789/* free up a loop structure */
1736void 2790void ecb_cold
1737ev_loop_destroy (EV_P) 2791ev_loop_destroy (EV_P)
1738{ 2792{
1739 int i; 2793 int i;
1740 2794
2795#if EV_MULTIPLICITY
2796 /* mimic free (0) */
2797 if (!EV_A)
2798 return;
2799#endif
2800
2801#if EV_CLEANUP_ENABLE
2802 /* queue cleanup watchers (and execute them) */
2803 if (expect_false (cleanupcnt))
2804 {
2805 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2806 EV_INVOKE_PENDING;
2807 }
2808#endif
2809
1741#if EV_CHILD_ENABLE 2810#if EV_CHILD_ENABLE
1742 if (ev_is_active (&childev)) 2811 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1743 { 2812 {
1744 ev_ref (EV_A); /* child watcher */ 2813 ev_ref (EV_A); /* child watcher */
1745 ev_signal_stop (EV_A_ &childev); 2814 ev_signal_stop (EV_A_ &childev);
1746 } 2815 }
1747#endif 2816#endif
… …
1749 if (ev_is_active (&pipe_w)) 2818 if (ev_is_active (&pipe_w))
1750 { 2819 {
1751 /*ev_ref (EV_A);*/ 2820 /*ev_ref (EV_A);*/
1752 /*ev_io_stop (EV_A_ &pipe_w);*/ 2821 /*ev_io_stop (EV_A_ &pipe_w);*/
1753 2822
1754#if EV_USE_EVENTFD
1755 if (evfd >= 0)
1756 close (evfd);
1757#endif
1758
1759 if (evpipe [0] >= 0)
1760 {
1761 EV_WIN32_CLOSE_FD (evpipe [0]); 2823 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1762 EV_WIN32_CLOSE_FD (evpipe [1]); 2824 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1763 }
1764 } 2825 }
1765 2826
1766#if EV_USE_SIGNALFD 2827#if EV_USE_SIGNALFD
1767 if (ev_is_active (&sigfd_w)) 2828 if (ev_is_active (&sigfd_w))
1768 close (sigfd); 2829 close (sigfd);
… …
1854#endif 2915#endif
1855#if EV_USE_INOTIFY 2916#if EV_USE_INOTIFY
1856 infy_fork (EV_A); 2917 infy_fork (EV_A);
1857#endif 2918#endif
1858 2919
2920#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1859 if (ev_is_active (&pipe_w)) 2921 if (ev_is_active (&pipe_w))
1860 { 2922 {
1861 /* this "locks" the handlers against writing to the pipe */ 2923 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1862 /* while we modify the fd vars */
1863 sig_pending = 1;
1864#if EV_ASYNC_ENABLE
1865 async_pending = 1;
1866#endif
1867 2924
1868 ev_ref (EV_A); 2925 ev_ref (EV_A);
1869 ev_io_stop (EV_A_ &pipe_w); 2926 ev_io_stop (EV_A_ &pipe_w);
1870 2927
1871#if EV_USE_EVENTFD
1872 if (evfd >= 0)
1873 close (evfd);
1874#endif
1875
1876 if (evpipe [0] >= 0) 2928 if (evpipe [0] >= 0)
1877 {
1878 EV_WIN32_CLOSE_FD (evpipe [0]); 2929 EV_WIN32_CLOSE_FD (evpipe [0]);
1879 EV_WIN32_CLOSE_FD (evpipe [1]);
1880 }
1881 2930
1882#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1883 evpipe_init (EV_A); 2931 evpipe_init (EV_A);
1884 /* now iterate over everything, in case we missed something */ 2932 /* iterate over everything, in case we missed something before */
1885 pipecb (EV_A_ &pipe_w, EV_READ); 2933 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1886#endif
1887 } 2934 }
2935#endif
1888 2936
1889 postfork = 0; 2937 postfork = 0;
1890} 2938}
1891 2939
1892#if EV_MULTIPLICITY 2940#if EV_MULTIPLICITY
1893 2941
1894struct ev_loop * 2942struct ev_loop * ecb_cold
1895ev_loop_new (unsigned int flags) 2943ev_loop_new (unsigned int flags) EV_THROW
1896{ 2944{
1897 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2945 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1898 2946
1899 memset (EV_A, 0, sizeof (struct ev_loop)); 2947 memset (EV_A, 0, sizeof (struct ev_loop));
1900 loop_init (EV_A_ flags); 2948 loop_init (EV_A_ flags);
… …
1907} 2955}
1908 2956
1909#endif /* multiplicity */ 2957#endif /* multiplicity */
1910 2958
1911#if EV_VERIFY 2959#if EV_VERIFY
1912static void noinline 2960static void noinline ecb_cold
1913verify_watcher (EV_P_ W w) 2961verify_watcher (EV_P_ W w)
1914{ 2962{
1915 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2963 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1916 2964
1917 if (w->pending) 2965 if (w->pending)
1918 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2966 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1919} 2967}
1920 2968
1921static void noinline 2969static void noinline ecb_cold
1922verify_heap (EV_P_ ANHE *heap, int N) 2970verify_heap (EV_P_ ANHE *heap, int N)
1923{ 2971{
1924 int i; 2972 int i;
1925 2973
1926 for (i = HEAP0; i < N + HEAP0; ++i) 2974 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1931 2979
1932 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2980 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1933 } 2981 }
1934} 2982}
1935 2983
1936static void noinline 2984static void noinline ecb_cold
1937array_verify (EV_P_ W *ws, int cnt) 2985array_verify (EV_P_ W *ws, int cnt)
1938{ 2986{
1939 while (cnt--) 2987 while (cnt--)
1940 { 2988 {
1941 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2989 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1943 } 2991 }
1944} 2992}
1945#endif 2993#endif
1946 2994
1947#if EV_FEATURE_API 2995#if EV_FEATURE_API
1948void 2996void ecb_cold
1949ev_verify (EV_P) 2997ev_verify (EV_P) EV_THROW
1950{ 2998{
1951#if EV_VERIFY 2999#if EV_VERIFY
1952 int i; 3000 int i;
1953 WL w; 3001 WL w, w2;
1954 3002
1955 assert (activecnt >= -1); 3003 assert (activecnt >= -1);
1956 3004
1957 assert (fdchangemax >= fdchangecnt); 3005 assert (fdchangemax >= fdchangecnt);
1958 for (i = 0; i < fdchangecnt; ++i) 3006 for (i = 0; i < fdchangecnt; ++i)
1959 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3007 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1960 3008
1961 assert (anfdmax >= 0); 3009 assert (anfdmax >= 0);
1962 for (i = 0; i < anfdmax; ++i) 3010 for (i = 0; i < anfdmax; ++i)
3011 {
3012 int j = 0;
3013
1963 for (w = anfds [i].head; w; w = w->next) 3014 for (w = w2 = anfds [i].head; w; w = w->next)
1964 { 3015 {
1965 verify_watcher (EV_A_ (W)w); 3016 verify_watcher (EV_A_ (W)w);
3017
3018 if (j++ & 1)
3019 {
3020 assert (("libev: io watcher list contains a loop", w != w2));
3021 w2 = w2->next;
3022 }
3023
1966 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3024 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1967 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3025 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1968 } 3026 }
3027 }
1969 3028
1970 assert (timermax >= timercnt); 3029 assert (timermax >= timercnt);
1971 verify_heap (EV_A_ timers, timercnt); 3030 verify_heap (EV_A_ timers, timercnt);
1972 3031
1973#if EV_PERIODIC_ENABLE 3032#if EV_PERIODIC_ENABLE
… …
2019#endif 3078#endif
2020} 3079}
2021#endif 3080#endif
2022 3081
2023#if EV_MULTIPLICITY 3082#if EV_MULTIPLICITY
2024struct ev_loop * 3083struct ev_loop * ecb_cold
2025#else 3084#else
2026int 3085int
2027#endif 3086#endif
2028ev_default_loop (unsigned int flags) 3087ev_default_loop (unsigned int flags) EV_THROW
2029{ 3088{
2030 if (!ev_default_loop_ptr) 3089 if (!ev_default_loop_ptr)
2031 { 3090 {
2032#if EV_MULTIPLICITY 3091#if EV_MULTIPLICITY
2033 EV_P = ev_default_loop_ptr = &default_loop_struct; 3092 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2052 3111
2053 return ev_default_loop_ptr; 3112 return ev_default_loop_ptr;
2054} 3113}
2055 3114
2056void 3115void
2057ev_loop_fork (EV_P) 3116ev_loop_fork (EV_P) EV_THROW
2058{ 3117{
2059 postfork = 1; /* must be in line with ev_default_fork */ 3118 postfork = 1;
2060} 3119}
2061 3120
2062/*****************************************************************************/ 3121/*****************************************************************************/
2063 3122
2064void 3123void
… …
2066{ 3125{
2067 EV_CB_INVOKE ((W)w, revents); 3126 EV_CB_INVOKE ((W)w, revents);
2068} 3127}
2069 3128
2070unsigned int 3129unsigned int
2071ev_pending_count (EV_P) 3130ev_pending_count (EV_P) EV_THROW
2072{ 3131{
2073 int pri; 3132 int pri;
2074 unsigned int count = 0; 3133 unsigned int count = 0;
2075 3134
2076 for (pri = NUMPRI; pri--; ) 3135 for (pri = NUMPRI; pri--; )
… …
2080} 3139}
2081 3140
2082void noinline 3141void noinline
2083ev_invoke_pending (EV_P) 3142ev_invoke_pending (EV_P)
2084{ 3143{
2085 int pri; 3144 pendingpri = NUMPRI;
2086 3145
2087 for (pri = NUMPRI; pri--; ) 3146 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3147 {
3148 --pendingpri;
3149
2088 while (pendingcnt [pri]) 3150 while (pendingcnt [pendingpri])
2089 { 3151 {
2090 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3152 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2091 3153
2092 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2093 /* ^ this is no longer true, as pending_w could be here */
2094
2095 p->w->pending = 0; 3154 p->w->pending = 0;
2096 EV_CB_INVOKE (p->w, p->events); 3155 EV_CB_INVOKE (p->w, p->events);
2097 EV_FREQUENT_CHECK; 3156 EV_FREQUENT_CHECK;
2098 } 3157 }
3158 }
2099} 3159}
2100 3160
2101#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2102/* make idle watchers pending. this handles the "call-idle */ 3162/* make idle watchers pending. this handles the "call-idle */
2103/* only when higher priorities are idle" logic */ 3163/* only when higher priorities are idle" logic */
… …
2160 feed_reverse_done (EV_A_ EV_TIMER); 3220 feed_reverse_done (EV_A_ EV_TIMER);
2161 } 3221 }
2162} 3222}
2163 3223
2164#if EV_PERIODIC_ENABLE 3224#if EV_PERIODIC_ENABLE
3225
3226static void noinline
3227periodic_recalc (EV_P_ ev_periodic *w)
3228{
3229 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3230 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3231
3232 /* the above almost always errs on the low side */
3233 while (at <= ev_rt_now)
3234 {
3235 ev_tstamp nat = at + w->interval;
3236
3237 /* when resolution fails us, we use ev_rt_now */
3238 if (expect_false (nat == at))
3239 {
3240 at = ev_rt_now;
3241 break;
3242 }
3243
3244 at = nat;
3245 }
3246
3247 ev_at (w) = at;
3248}
3249
2165/* make periodics pending */ 3250/* make periodics pending */
2166inline_size void 3251inline_size void
2167periodics_reify (EV_P) 3252periodics_reify (EV_P)
2168{ 3253{
2169 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2170 3255
2171 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3256 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2172 { 3257 {
2173 int feed_count = 0;
2174
2175 do 3258 do
2176 { 3259 {
2177 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3260 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2178 3261
2179 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3262 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2188 ANHE_at_cache (periodics [HEAP0]); 3271 ANHE_at_cache (periodics [HEAP0]);
2189 downheap (periodics, periodiccnt, HEAP0); 3272 downheap (periodics, periodiccnt, HEAP0);
2190 } 3273 }
2191 else if (w->interval) 3274 else if (w->interval)
2192 { 3275 {
2193 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3276 periodic_recalc (EV_A_ w);
2194 /* if next trigger time is not sufficiently in the future, put it there */
2195 /* this might happen because of floating point inexactness */
2196 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2197 {
2198 ev_at (w) += w->interval;
2199
2200 /* if interval is unreasonably low we might still have a time in the past */
2201 /* so correct this. this will make the periodic very inexact, but the user */
2202 /* has effectively asked to get triggered more often than possible */
2203 if (ev_at (w) < ev_rt_now)
2204 ev_at (w) = ev_rt_now;
2205 }
2206
2207 ANHE_at_cache (periodics [HEAP0]); 3277 ANHE_at_cache (periodics [HEAP0]);
2208 downheap (periodics, periodiccnt, HEAP0); 3278 downheap (periodics, periodiccnt, HEAP0);
2209 } 3279 }
2210 else 3280 else
2211 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3281 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2219 } 3289 }
2220} 3290}
2221 3291
2222/* simply recalculate all periodics */ 3292/* simply recalculate all periodics */
2223/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3293/* TODO: maybe ensure that at least one event happens when jumping forward? */
2224static void noinline 3294static void noinline ecb_cold
2225periodics_reschedule (EV_P) 3295periodics_reschedule (EV_P)
2226{ 3296{
2227 int i; 3297 int i;
2228 3298
2229 /* adjust periodics after time jump */ 3299 /* adjust periodics after time jump */
… …
2232 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3302 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2233 3303
2234 if (w->reschedule_cb) 3304 if (w->reschedule_cb)
2235 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3305 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2236 else if (w->interval) 3306 else if (w->interval)
2237 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3307 periodic_recalc (EV_A_ w);
2238 3308
2239 ANHE_at_cache (periodics [i]); 3309 ANHE_at_cache (periodics [i]);
2240 } 3310 }
2241 3311
2242 reheap (periodics, periodiccnt); 3312 reheap (periodics, periodiccnt);
2243} 3313}
2244#endif 3314#endif
2245 3315
2246/* adjust all timers by a given offset */ 3316/* adjust all timers by a given offset */
2247static void noinline 3317static void noinline ecb_cold
2248timers_reschedule (EV_P_ ev_tstamp adjust) 3318timers_reschedule (EV_P_ ev_tstamp adjust)
2249{ 3319{
2250 int i; 3320 int i;
2251 3321
2252 for (i = 0; i < timercnt; ++i) 3322 for (i = 0; i < timercnt; ++i)
… …
2289 * doesn't hurt either as we only do this on time-jumps or 3359 * doesn't hurt either as we only do this on time-jumps or
2290 * in the unlikely event of having been preempted here. 3360 * in the unlikely event of having been preempted here.
2291 */ 3361 */
2292 for (i = 4; --i; ) 3362 for (i = 4; --i; )
2293 { 3363 {
3364 ev_tstamp diff;
2294 rtmn_diff = ev_rt_now - mn_now; 3365 rtmn_diff = ev_rt_now - mn_now;
2295 3366
3367 diff = odiff - rtmn_diff;
3368
2296 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3369 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2297 return; /* all is well */ 3370 return; /* all is well */
2298 3371
2299 ev_rt_now = ev_time (); 3372 ev_rt_now = ev_time ();
2300 mn_now = get_clock (); 3373 mn_now = get_clock ();
2301 now_floor = mn_now; 3374 now_floor = mn_now;
… …
2323 3396
2324 mn_now = ev_rt_now; 3397 mn_now = ev_rt_now;
2325 } 3398 }
2326} 3399}
2327 3400
2328void 3401int
2329ev_run (EV_P_ int flags) 3402ev_run (EV_P_ int flags)
2330{ 3403{
2331#if EV_FEATURE_API 3404#if EV_FEATURE_API
2332 ++loop_depth; 3405 ++loop_depth;
2333#endif 3406#endif
… …
2391 ev_tstamp prev_mn_now = mn_now; 3464 ev_tstamp prev_mn_now = mn_now;
2392 3465
2393 /* update time to cancel out callback processing overhead */ 3466 /* update time to cancel out callback processing overhead */
2394 time_update (EV_A_ 1e100); 3467 time_update (EV_A_ 1e100);
2395 3468
3469 /* from now on, we want a pipe-wake-up */
3470 pipe_write_wanted = 1;
3471
3472 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3473
2396 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3474 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2397 { 3475 {
2398 waittime = MAX_BLOCKTIME; 3476 waittime = MAX_BLOCKTIME;
2399 3477
2400 if (timercnt) 3478 if (timercnt)
2401 { 3479 {
2402 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3480 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2403 if (waittime > to) waittime = to; 3481 if (waittime > to) waittime = to;
2404 } 3482 }
2405 3483
2406#if EV_PERIODIC_ENABLE 3484#if EV_PERIODIC_ENABLE
2407 if (periodiccnt) 3485 if (periodiccnt)
2408 { 3486 {
2409 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3487 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2410 if (waittime > to) waittime = to; 3488 if (waittime > to) waittime = to;
2411 } 3489 }
2412#endif 3490#endif
2413 3491
2414 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3492 /* don't let timeouts decrease the waittime below timeout_blocktime */
2415 if (expect_false (waittime < timeout_blocktime)) 3493 if (expect_false (waittime < timeout_blocktime))
2416 waittime = timeout_blocktime; 3494 waittime = timeout_blocktime;
3495
3496 /* at this point, we NEED to wait, so we have to ensure */
3497 /* to pass a minimum nonzero value to the backend */
3498 if (expect_false (waittime < backend_mintime))
3499 waittime = backend_mintime;
2417 3500
2418 /* extra check because io_blocktime is commonly 0 */ 3501 /* extra check because io_blocktime is commonly 0 */
2419 if (expect_false (io_blocktime)) 3502 if (expect_false (io_blocktime))
2420 { 3503 {
2421 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3504 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2422 3505
2423 if (sleeptime > waittime - backend_fudge) 3506 if (sleeptime > waittime - backend_mintime)
2424 sleeptime = waittime - backend_fudge; 3507 sleeptime = waittime - backend_mintime;
2425 3508
2426 if (expect_true (sleeptime > 0.)) 3509 if (expect_true (sleeptime > 0.))
2427 { 3510 {
2428 ev_sleep (sleeptime); 3511 ev_sleep (sleeptime);
2429 waittime -= sleeptime; 3512 waittime -= sleeptime;
… …
2436#endif 3519#endif
2437 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3520 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2438 backend_poll (EV_A_ waittime); 3521 backend_poll (EV_A_ waittime);
2439 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3522 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2440 3523
3524 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3525
3526 ECB_MEMORY_FENCE_ACQUIRE;
3527 if (pipe_write_skipped)
3528 {
3529 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3530 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3531 }
3532
3533
2441 /* update ev_rt_now, do magic */ 3534 /* update ev_rt_now, do magic */
2442 time_update (EV_A_ waittime + sleeptime); 3535 time_update (EV_A_ waittime + sleeptime);
2443 } 3536 }
2444 3537
2445 /* queue pending timers and reschedule them */ 3538 /* queue pending timers and reschedule them */
… …
2471 loop_done = EVBREAK_CANCEL; 3564 loop_done = EVBREAK_CANCEL;
2472 3565
2473#if EV_FEATURE_API 3566#if EV_FEATURE_API
2474 --loop_depth; 3567 --loop_depth;
2475#endif 3568#endif
3569
3570 return activecnt;
2476} 3571}
2477 3572
2478void 3573void
2479ev_break (EV_P_ int how) 3574ev_break (EV_P_ int how) EV_THROW
2480{ 3575{
2481 loop_done = how; 3576 loop_done = how;
2482} 3577}
2483 3578
2484void 3579void
2485ev_ref (EV_P) 3580ev_ref (EV_P) EV_THROW
2486{ 3581{
2487 ++activecnt; 3582 ++activecnt;
2488} 3583}
2489 3584
2490void 3585void
2491ev_unref (EV_P) 3586ev_unref (EV_P) EV_THROW
2492{ 3587{
2493 --activecnt; 3588 --activecnt;
2494} 3589}
2495 3590
2496void 3591void
2497ev_now_update (EV_P) 3592ev_now_update (EV_P) EV_THROW
2498{ 3593{
2499 time_update (EV_A_ 1e100); 3594 time_update (EV_A_ 1e100);
2500} 3595}
2501 3596
2502void 3597void
2503ev_suspend (EV_P) 3598ev_suspend (EV_P) EV_THROW
2504{ 3599{
2505 ev_now_update (EV_A); 3600 ev_now_update (EV_A);
2506} 3601}
2507 3602
2508void 3603void
2509ev_resume (EV_P) 3604ev_resume (EV_P) EV_THROW
2510{ 3605{
2511 ev_tstamp mn_prev = mn_now; 3606 ev_tstamp mn_prev = mn_now;
2512 3607
2513 ev_now_update (EV_A); 3608 ev_now_update (EV_A);
2514 timers_reschedule (EV_A_ mn_now - mn_prev); 3609 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2553 w->pending = 0; 3648 w->pending = 0;
2554 } 3649 }
2555} 3650}
2556 3651
2557int 3652int
2558ev_clear_pending (EV_P_ void *w) 3653ev_clear_pending (EV_P_ void *w) EV_THROW
2559{ 3654{
2560 W w_ = (W)w; 3655 W w_ = (W)w;
2561 int pending = w_->pending; 3656 int pending = w_->pending;
2562 3657
2563 if (expect_true (pending)) 3658 if (expect_true (pending))
… …
2596} 3691}
2597 3692
2598/*****************************************************************************/ 3693/*****************************************************************************/
2599 3694
2600void noinline 3695void noinline
2601ev_io_start (EV_P_ ev_io *w) 3696ev_io_start (EV_P_ ev_io *w) EV_THROW
2602{ 3697{
2603 int fd = w->fd; 3698 int fd = w->fd;
2604 3699
2605 if (expect_false (ev_is_active (w))) 3700 if (expect_false (ev_is_active (w)))
2606 return; 3701 return;
… …
2612 3707
2613 ev_start (EV_A_ (W)w, 1); 3708 ev_start (EV_A_ (W)w, 1);
2614 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3709 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2615 wlist_add (&anfds[fd].head, (WL)w); 3710 wlist_add (&anfds[fd].head, (WL)w);
2616 3711
3712 /* common bug, apparently */
3713 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3714
2617 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3715 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2618 w->events &= ~EV__IOFDSET; 3716 w->events &= ~EV__IOFDSET;
2619 3717
2620 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
2621} 3719}
2622 3720
2623void noinline 3721void noinline
2624ev_io_stop (EV_P_ ev_io *w) 3722ev_io_stop (EV_P_ ev_io *w) EV_THROW
2625{ 3723{
2626 clear_pending (EV_A_ (W)w); 3724 clear_pending (EV_A_ (W)w);
2627 if (expect_false (!ev_is_active (w))) 3725 if (expect_false (!ev_is_active (w)))
2628 return; 3726 return;
2629 3727
… …
2638 3736
2639 EV_FREQUENT_CHECK; 3737 EV_FREQUENT_CHECK;
2640} 3738}
2641 3739
2642void noinline 3740void noinline
2643ev_timer_start (EV_P_ ev_timer *w) 3741ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2644{ 3742{
2645 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2646 return; 3744 return;
2647 3745
2648 ev_at (w) += mn_now; 3746 ev_at (w) += mn_now;
… …
2662 3760
2663 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3761 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2664} 3762}
2665 3763
2666void noinline 3764void noinline
2667ev_timer_stop (EV_P_ ev_timer *w) 3765ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2668{ 3766{
2669 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
2670 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
2671 return; 3769 return;
2672 3770
… …
2692 3790
2693 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
2694} 3792}
2695 3793
2696void noinline 3794void noinline
2697ev_timer_again (EV_P_ ev_timer *w) 3795ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2698{ 3796{
2699 EV_FREQUENT_CHECK; 3797 EV_FREQUENT_CHECK;
3798
3799 clear_pending (EV_A_ (W)w);
2700 3800
2701 if (ev_is_active (w)) 3801 if (ev_is_active (w))
2702 { 3802 {
2703 if (w->repeat) 3803 if (w->repeat)
2704 { 3804 {
… …
2717 3817
2718 EV_FREQUENT_CHECK; 3818 EV_FREQUENT_CHECK;
2719} 3819}
2720 3820
2721ev_tstamp 3821ev_tstamp
2722ev_timer_remaining (EV_P_ ev_timer *w) 3822ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2723{ 3823{
2724 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3824 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2725} 3825}
2726 3826
2727#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
2728void noinline 3828void noinline
2729ev_periodic_start (EV_P_ ev_periodic *w) 3829ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2730{ 3830{
2731 if (expect_false (ev_is_active (w))) 3831 if (expect_false (ev_is_active (w)))
2732 return; 3832 return;
2733 3833
2734 if (w->reschedule_cb) 3834 if (w->reschedule_cb)
2735 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3835 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2736 else if (w->interval) 3836 else if (w->interval)
2737 { 3837 {
2738 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3838 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2739 /* this formula differs from the one in periodic_reify because we do not always round up */ 3839 periodic_recalc (EV_A_ w);
2740 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2741 } 3840 }
2742 else 3841 else
2743 ev_at (w) = w->offset; 3842 ev_at (w) = w->offset;
2744 3843
2745 EV_FREQUENT_CHECK; 3844 EV_FREQUENT_CHECK;
… …
2755 3854
2756 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3855 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2757} 3856}
2758 3857
2759void noinline 3858void noinline
2760ev_periodic_stop (EV_P_ ev_periodic *w) 3859ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2761{ 3860{
2762 clear_pending (EV_A_ (W)w); 3861 clear_pending (EV_A_ (W)w);
2763 if (expect_false (!ev_is_active (w))) 3862 if (expect_false (!ev_is_active (w)))
2764 return; 3863 return;
2765 3864
… …
2783 3882
2784 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2785} 3884}
2786 3885
2787void noinline 3886void noinline
2788ev_periodic_again (EV_P_ ev_periodic *w) 3887ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2789{ 3888{
2790 /* TODO: use adjustheap and recalculation */ 3889 /* TODO: use adjustheap and recalculation */
2791 ev_periodic_stop (EV_A_ w); 3890 ev_periodic_stop (EV_A_ w);
2792 ev_periodic_start (EV_A_ w); 3891 ev_periodic_start (EV_A_ w);
2793} 3892}
… …
2798#endif 3897#endif
2799 3898
2800#if EV_SIGNAL_ENABLE 3899#if EV_SIGNAL_ENABLE
2801 3900
2802void noinline 3901void noinline
2803ev_signal_start (EV_P_ ev_signal *w) 3902ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2804{ 3903{
2805 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
2806 return; 3905 return;
2807 3906
2808 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3907 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2810#if EV_MULTIPLICITY 3909#if EV_MULTIPLICITY
2811 assert (("libev: a signal must not be attached to two different loops", 3910 assert (("libev: a signal must not be attached to two different loops",
2812 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3911 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2813 3912
2814 signals [w->signum - 1].loop = EV_A; 3913 signals [w->signum - 1].loop = EV_A;
3914 ECB_MEMORY_FENCE_RELEASE;
2815#endif 3915#endif
2816 3916
2817 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2818 3918
2819#if EV_USE_SIGNALFD 3919#if EV_USE_SIGNALFD
… …
2866 sa.sa_handler = ev_sighandler; 3966 sa.sa_handler = ev_sighandler;
2867 sigfillset (&sa.sa_mask); 3967 sigfillset (&sa.sa_mask);
2868 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3968 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2869 sigaction (w->signum, &sa, 0); 3969 sigaction (w->signum, &sa, 0);
2870 3970
3971 if (origflags & EVFLAG_NOSIGMASK)
3972 {
2871 sigemptyset (&sa.sa_mask); 3973 sigemptyset (&sa.sa_mask);
2872 sigaddset (&sa.sa_mask, w->signum); 3974 sigaddset (&sa.sa_mask, w->signum);
2873 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3975 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3976 }
2874#endif 3977#endif
2875 } 3978 }
2876 3979
2877 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2878} 3981}
2879 3982
2880void noinline 3983void noinline
2881ev_signal_stop (EV_P_ ev_signal *w) 3984ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2882{ 3985{
2883 clear_pending (EV_A_ (W)w); 3986 clear_pending (EV_A_ (W)w);
2884 if (expect_false (!ev_is_active (w))) 3987 if (expect_false (!ev_is_active (w)))
2885 return; 3988 return;
2886 3989
… …
2917#endif 4020#endif
2918 4021
2919#if EV_CHILD_ENABLE 4022#if EV_CHILD_ENABLE
2920 4023
2921void 4024void
2922ev_child_start (EV_P_ ev_child *w) 4025ev_child_start (EV_P_ ev_child *w) EV_THROW
2923{ 4026{
2924#if EV_MULTIPLICITY 4027#if EV_MULTIPLICITY
2925 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4028 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2926#endif 4029#endif
2927 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
… …
2934 4037
2935 EV_FREQUENT_CHECK; 4038 EV_FREQUENT_CHECK;
2936} 4039}
2937 4040
2938void 4041void
2939ev_child_stop (EV_P_ ev_child *w) 4042ev_child_stop (EV_P_ ev_child *w) EV_THROW
2940{ 4043{
2941 clear_pending (EV_A_ (W)w); 4044 clear_pending (EV_A_ (W)w);
2942 if (expect_false (!ev_is_active (w))) 4045 if (expect_false (!ev_is_active (w)))
2943 return; 4046 return;
2944 4047
… …
2971# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4074# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2972 4075
2973static void noinline 4076static void noinline
2974infy_add (EV_P_ ev_stat *w) 4077infy_add (EV_P_ ev_stat *w)
2975{ 4078{
2976 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); 4079 w->wd = inotify_add_watch (fs_fd, w->path,
4080 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4081 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4082 | IN_DONT_FOLLOW | IN_MASK_ADD);
2977 4083
2978 if (w->wd >= 0) 4084 if (w->wd >= 0)
2979 { 4085 {
2980 struct statfs sfs; 4086 struct statfs sfs;
2981 4087
… …
2985 4091
2986 if (!fs_2625) 4092 if (!fs_2625)
2987 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4093 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2988 else if (!statfs (w->path, &sfs) 4094 else if (!statfs (w->path, &sfs)
2989 && (sfs.f_type == 0x1373 /* devfs */ 4095 && (sfs.f_type == 0x1373 /* devfs */
4096 || sfs.f_type == 0x4006 /* fat */
4097 || sfs.f_type == 0x4d44 /* msdos */
2990 || sfs.f_type == 0xEF53 /* ext2/3 */ 4098 || sfs.f_type == 0xEF53 /* ext2/3 */
4099 || sfs.f_type == 0x72b6 /* jffs2 */
4100 || sfs.f_type == 0x858458f6 /* ramfs */
4101 || sfs.f_type == 0x5346544e /* ntfs */
2991 || sfs.f_type == 0x3153464a /* jfs */ 4102 || sfs.f_type == 0x3153464a /* jfs */
4103 || sfs.f_type == 0x9123683e /* btrfs */
2992 || sfs.f_type == 0x52654973 /* reiser3 */ 4104 || sfs.f_type == 0x52654973 /* reiser3 */
2993 || sfs.f_type == 0x01021994 /* tempfs */ 4105 || sfs.f_type == 0x01021994 /* tmpfs */
2994 || sfs.f_type == 0x58465342 /* xfs */)) 4106 || sfs.f_type == 0x58465342 /* xfs */))
2995 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4107 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2996 else 4108 else
2997 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4109 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2998 } 4110 }
… …
3019 if (!pend || pend == path) 4131 if (!pend || pend == path)
3020 break; 4132 break;
3021 4133
3022 *pend = 0; 4134 *pend = 0;
3023 w->wd = inotify_add_watch (fs_fd, path, mask); 4135 w->wd = inotify_add_watch (fs_fd, path, mask);
3024 } 4136 }
3025 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4137 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3026 } 4138 }
3027 } 4139 }
3028 4140
3029 if (w->wd >= 0) 4141 if (w->wd >= 0)
… …
3096 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4208 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3097 ofs += sizeof (struct inotify_event) + ev->len; 4209 ofs += sizeof (struct inotify_event) + ev->len;
3098 } 4210 }
3099} 4211}
3100 4212
3101inline_size void 4213inline_size void ecb_cold
3102ev_check_2625 (EV_P) 4214ev_check_2625 (EV_P)
3103{ 4215{
3104 /* kernels < 2.6.25 are borked 4216 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4217 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4218 */
… …
3111} 4223}
3112 4224
3113inline_size int 4225inline_size int
3114infy_newfd (void) 4226infy_newfd (void)
3115{ 4227{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4228#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4229 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4230 if (fd >= 0)
3119 return fd; 4231 return fd;
3120#endif 4232#endif
3121 return inotify_init (); 4233 return inotify_init ();
… …
3196#else 4308#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4309# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4310#endif
3199 4311
3200void 4312void
3201ev_stat_stat (EV_P_ ev_stat *w) 4313ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3202{ 4314{
3203 if (lstat (w->path, &w->attr) < 0) 4315 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4316 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4317 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4318 w->attr.st_nlink = 1;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 4357 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 4358 }
3247} 4359}
3248 4360
3249void 4361void
3250ev_stat_start (EV_P_ ev_stat *w) 4362ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3251{ 4363{
3252 if (expect_false (ev_is_active (w))) 4364 if (expect_false (ev_is_active (w)))
3253 return; 4365 return;
3254 4366
3255 ev_stat_stat (EV_A_ w); 4367 ev_stat_stat (EV_A_ w);
… …
3276 4388
3277 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3278} 4390}
3279 4391
3280void 4392void
3281ev_stat_stop (EV_P_ ev_stat *w) 4393ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3282{ 4394{
3283 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3285 return; 4397 return;
3286 4398
… …
3302} 4414}
3303#endif 4415#endif
3304 4416
3305#if EV_IDLE_ENABLE 4417#if EV_IDLE_ENABLE
3306void 4418void
3307ev_idle_start (EV_P_ ev_idle *w) 4419ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3308{ 4420{
3309 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
3310 return; 4422 return;
3311 4423
3312 pri_adjust (EV_A_ (W)w); 4424 pri_adjust (EV_A_ (W)w);
… …
3325 4437
3326 EV_FREQUENT_CHECK; 4438 EV_FREQUENT_CHECK;
3327} 4439}
3328 4440
3329void 4441void
3330ev_idle_stop (EV_P_ ev_idle *w) 4442ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3331{ 4443{
3332 clear_pending (EV_A_ (W)w); 4444 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4445 if (expect_false (!ev_is_active (w)))
3334 return; 4446 return;
3335 4447
… …
3349} 4461}
3350#endif 4462#endif
3351 4463
3352#if EV_PREPARE_ENABLE 4464#if EV_PREPARE_ENABLE
3353void 4465void
3354ev_prepare_start (EV_P_ ev_prepare *w) 4466ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3355{ 4467{
3356 if (expect_false (ev_is_active (w))) 4468 if (expect_false (ev_is_active (w)))
3357 return; 4469 return;
3358 4470
3359 EV_FREQUENT_CHECK; 4471 EV_FREQUENT_CHECK;
… …
3364 4476
3365 EV_FREQUENT_CHECK; 4477 EV_FREQUENT_CHECK;
3366} 4478}
3367 4479
3368void 4480void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 4481ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3370{ 4482{
3371 clear_pending (EV_A_ (W)w); 4483 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 4484 if (expect_false (!ev_is_active (w)))
3373 return; 4485 return;
3374 4486
… …
3387} 4499}
3388#endif 4500#endif
3389 4501
3390#if EV_CHECK_ENABLE 4502#if EV_CHECK_ENABLE
3391void 4503void
3392ev_check_start (EV_P_ ev_check *w) 4504ev_check_start (EV_P_ ev_check *w) EV_THROW
3393{ 4505{
3394 if (expect_false (ev_is_active (w))) 4506 if (expect_false (ev_is_active (w)))
3395 return; 4507 return;
3396 4508
3397 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
… …
3402 4514
3403 EV_FREQUENT_CHECK; 4515 EV_FREQUENT_CHECK;
3404} 4516}
3405 4517
3406void 4518void
3407ev_check_stop (EV_P_ ev_check *w) 4519ev_check_stop (EV_P_ ev_check *w) EV_THROW
3408{ 4520{
3409 clear_pending (EV_A_ (W)w); 4521 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4522 if (expect_false (!ev_is_active (w)))
3411 return; 4523 return;
3412 4524
… …
3425} 4537}
3426#endif 4538#endif
3427 4539
3428#if EV_EMBED_ENABLE 4540#if EV_EMBED_ENABLE
3429void noinline 4541void noinline
3430ev_embed_sweep (EV_P_ ev_embed *w) 4542ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3431{ 4543{
3432 ev_run (w->other, EVRUN_NOWAIT); 4544 ev_run (w->other, EVRUN_NOWAIT);
3433} 4545}
3434 4546
3435static void 4547static void
… …
3483 ev_idle_stop (EV_A_ idle); 4595 ev_idle_stop (EV_A_ idle);
3484} 4596}
3485#endif 4597#endif
3486 4598
3487void 4599void
3488ev_embed_start (EV_P_ ev_embed *w) 4600ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3489{ 4601{
3490 if (expect_false (ev_is_active (w))) 4602 if (expect_false (ev_is_active (w)))
3491 return; 4603 return;
3492 4604
3493 { 4605 {
… …
3514 4626
3515 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3516} 4628}
3517 4629
3518void 4630void
3519ev_embed_stop (EV_P_ ev_embed *w) 4631ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3520{ 4632{
3521 clear_pending (EV_A_ (W)w); 4633 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 4634 if (expect_false (!ev_is_active (w)))
3523 return; 4635 return;
3524 4636
… …
3534} 4646}
3535#endif 4647#endif
3536 4648
3537#if EV_FORK_ENABLE 4649#if EV_FORK_ENABLE
3538void 4650void
3539ev_fork_start (EV_P_ ev_fork *w) 4651ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3540{ 4652{
3541 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3542 return; 4654 return;
3543 4655
3544 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
… …
3549 4661
3550 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
3551} 4663}
3552 4664
3553void 4665void
3554ev_fork_stop (EV_P_ ev_fork *w) 4666ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3555{ 4667{
3556 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
3558 return; 4670 return;
3559 4671
… …
3572} 4684}
3573#endif 4685#endif
3574 4686
3575#if EV_CLEANUP_ENABLE 4687#if EV_CLEANUP_ENABLE
3576void 4688void
3577ev_cleanup_start (EV_P_ ev_cleanup *w) 4689ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3578{ 4690{
3579 if (expect_false (ev_is_active (w))) 4691 if (expect_false (ev_is_active (w)))
3580 return; 4692 return;
3581 4693
3582 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
3583 4695
3584 ev_start (EV_A_ (W)w, ++cleanupcnt); 4696 ev_start (EV_A_ (W)w, ++cleanupcnt);
3585 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4697 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3586 cleanups [cleanupcnt - 1] = w; 4698 cleanups [cleanupcnt - 1] = w;
3587 4699
4700 /* cleanup watchers should never keep a refcount on the loop */
4701 ev_unref (EV_A);
3588 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3589} 4703}
3590 4704
3591void 4705void
3592ev_cleanup_stop (EV_P_ ev_cleanup *w) 4706ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3593{ 4707{
3594 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
3595 if (expect_false (!ev_is_active (w))) 4709 if (expect_false (!ev_is_active (w)))
3596 return; 4710 return;
3597 4711
3598 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
4713 ev_ref (EV_A);
3599 4714
3600 { 4715 {
3601 int active = ev_active (w); 4716 int active = ev_active (w);
3602 4717
3603 cleanups [active - 1] = cleanups [--cleanupcnt]; 4718 cleanups [active - 1] = cleanups [--cleanupcnt];
… …
3610} 4725}
3611#endif 4726#endif
3612 4727
3613#if EV_ASYNC_ENABLE 4728#if EV_ASYNC_ENABLE
3614void 4729void
3615ev_async_start (EV_P_ ev_async *w) 4730ev_async_start (EV_P_ ev_async *w) EV_THROW
3616{ 4731{
3617 if (expect_false (ev_is_active (w))) 4732 if (expect_false (ev_is_active (w)))
3618 return; 4733 return;
3619 4734
3620 w->sent = 0; 4735 w->sent = 0;
… …
3629 4744
3630 EV_FREQUENT_CHECK; 4745 EV_FREQUENT_CHECK;
3631} 4746}
3632 4747
3633void 4748void
3634ev_async_stop (EV_P_ ev_async *w) 4749ev_async_stop (EV_P_ ev_async *w) EV_THROW
3635{ 4750{
3636 clear_pending (EV_A_ (W)w); 4751 clear_pending (EV_A_ (W)w);
3637 if (expect_false (!ev_is_active (w))) 4752 if (expect_false (!ev_is_active (w)))
3638 return; 4753 return;
3639 4754
… …
3650 4765
3651 EV_FREQUENT_CHECK; 4766 EV_FREQUENT_CHECK;
3652} 4767}
3653 4768
3654void 4769void
3655ev_async_send (EV_P_ ev_async *w) 4770ev_async_send (EV_P_ ev_async *w) EV_THROW
3656{ 4771{
3657 w->sent = 1; 4772 w->sent = 1;
3658 evpipe_write (EV_A_ &async_pending); 4773 evpipe_write (EV_A_ &async_pending);
3659} 4774}
3660#endif 4775#endif
… …
3697 4812
3698 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4813 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3699} 4814}
3700 4815
3701void 4816void
3702ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4817ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3703{ 4818{
3704 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4819 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3705 4820
3706 if (expect_false (!once)) 4821 if (expect_false (!once))
3707 { 4822 {
… …
3728} 4843}
3729 4844
3730/*****************************************************************************/ 4845/*****************************************************************************/
3731 4846
3732#if EV_WALK_ENABLE 4847#if EV_WALK_ENABLE
3733void 4848void ecb_cold
3734ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4849ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3735{ 4850{
3736 int i, j; 4851 int i, j;
3737 ev_watcher_list *wl, *wn; 4852 ev_watcher_list *wl, *wn;
3738 4853
3739 if (types & (EV_IO | EV_EMBED)) 4854 if (types & (EV_IO | EV_EMBED))
… …
3782 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4897 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3783#endif 4898#endif
3784 4899
3785#if EV_IDLE_ENABLE 4900#if EV_IDLE_ENABLE
3786 if (types & EV_IDLE) 4901 if (types & EV_IDLE)
3787 for (j = NUMPRI; i--; ) 4902 for (j = NUMPRI; j--; )
3788 for (i = idlecnt [j]; i--; ) 4903 for (i = idlecnt [j]; i--; )
3789 cb (EV_A_ EV_IDLE, idles [j][i]); 4904 cb (EV_A_ EV_IDLE, idles [j][i]);
3790#endif 4905#endif
3791 4906
3792#if EV_FORK_ENABLE 4907#if EV_FORK_ENABLE
… …
3845 4960
3846#if EV_MULTIPLICITY 4961#if EV_MULTIPLICITY
3847 #include "ev_wrap.h" 4962 #include "ev_wrap.h"
3848#endif 4963#endif
3849 4964
3850EV_CPP(})
3851

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