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Comparing libev/ev.c (file contents):
Revision 1.370 by root, Sun Jan 30 19:05:41 2011 UTC vs.
Revision 1.481 by root, Thu Jun 1 20:25:50 2017 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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
… …
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/* hp-ux has it in sys/time.h, which we unconditionally include above */ 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 417# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 418# include <sys/select.h>
384# endif 419# endif
385#endif 420#endif
386 421
387#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
… …
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
394# endif 429# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 430#endif
400 431
401#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 434# include <stdint.h>
… …
443#else 474#else
444# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
445#endif 476#endif
446 477
447/* 478/*
448 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 481 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 484
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 487
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 546 #if __GNUC__
547 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
562#else
563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
581#endif
582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
656#ifndef ECB_MEMORY_FENCE
657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
658 #if __i386 || __i386__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
707 #endif
708 #endif
709#endif
710
711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
737 #elif defined _WIN32
738 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS
769 /*
770 * if you get undefined symbol references to pthread_mutex_lock,
771 * or failure to find pthread.h, then you should implement
772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
773 * OR provide pthread.h and link against the posix thread library
774 * of your system.
775 */
776 #include <pthread.h>
777 #define ECB_NEEDS_PTHREADS 1
778 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
779
780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
782 #endif
783#endif
784
785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif
788
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
791#endif
792
793/*****************************************************************************/
794
795#if ECB_CPP
796 #define ecb_inline static inline
797#elif ECB_GCC_VERSION(2,5)
798 #define ecb_inline static __inline__
799#elif ECB_C99
800 #define ecb_inline static inline
801#else
802 #define ecb_inline static
803#endif
804
805#if ECB_GCC_VERSION(3,3)
806 #define ecb_restrict __restrict__
807#elif ECB_C99
808 #define ecb_restrict restrict
809#else
810 #define ecb_restrict
811#endif
812
813typedef int ecb_bool;
814
815#define ECB_CONCAT_(a, b) a ## b
816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
817#define ECB_STRINGIFY_(a) # a
818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
820
821#define ecb_function_ ecb_inline
822
823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 841#else
467# define expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 843#endif
472#endif
473 844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
847#else
848 #define ecb_prefetch(addr,rw,locality)
849#endif
850
851/* no emulation for ecb_decltype */
852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
857 #define ecb_decltype(x) __typeof__ (x)
858#endif
859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
880#define ecb_unused ecb_attribute ((__unused__))
881#define ecb_const ecb_attribute ((__const__))
882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
895
896#if ECB_GCC_VERSION(4,3)
897 #define ecb_artificial ecb_attribute ((__artificial__))
898 #define ecb_hot ecb_attribute ((__hot__))
899 #define ecb_cold ecb_attribute ((__cold__))
900#else
901 #define ecb_artificial
902 #define ecb_hot
903 #define ecb_cold
904#endif
905
906/* put around conditional expressions if you are very sure that the */
907/* expression is mostly true or mostly false. note that these return */
908/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 909#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 910#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
911/* for compatibility to the rest of the world */
912#define ecb_likely(expr) ecb_expect_true (expr)
913#define ecb_unlikely(expr) ecb_expect_false (expr)
914
915/* count trailing zero bits and count # of one bits */
916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
923 #define ecb_ctz32(x) __builtin_ctz (x)
924 #define ecb_ctz64(x) __builtin_ctzll (x)
925 #define ecb_popcount32(x) __builtin_popcount (x)
926 /* no popcountll */
927#else
928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
929 ecb_function_ ecb_const int
930 ecb_ctz32 (uint32_t x)
931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
937 int r = 0;
938
939 x &= ~x + 1; /* this isolates the lowest bit */
940
941#if ECB_branchless_on_i386
942 r += !!(x & 0xaaaaaaaa) << 0;
943 r += !!(x & 0xcccccccc) << 1;
944 r += !!(x & 0xf0f0f0f0) << 2;
945 r += !!(x & 0xff00ff00) << 3;
946 r += !!(x & 0xffff0000) << 4;
947#else
948 if (x & 0xaaaaaaaa) r += 1;
949 if (x & 0xcccccccc) r += 2;
950 if (x & 0xf0f0f0f0) r += 4;
951 if (x & 0xff00ff00) r += 8;
952 if (x & 0xffff0000) r += 16;
953#endif
954
955 return r;
956#endif
957 }
958
959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
960 ecb_function_ ecb_const int
961 ecb_ctz64 (uint64_t x)
962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
968 int shift = x & 0xffffffff ? 0 : 32;
969 return ecb_ctz32 (x >> shift) + shift;
970#endif
971 }
972
973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
974 ecb_function_ ecb_const int
975 ecb_popcount32 (uint32_t x)
976 {
977 x -= (x >> 1) & 0x55555555;
978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
979 x = ((x >> 4) + x) & 0x0f0f0f0f;
980 x *= 0x01010101;
981
982 return x >> 24;
983 }
984
985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
993 int r = 0;
994
995 if (x >> 16) { x >>= 16; r += 16; }
996 if (x >> 8) { x >>= 8; r += 8; }
997 if (x >> 4) { x >>= 4; r += 4; }
998 if (x >> 2) { x >>= 2; r += 2; }
999 if (x >> 1) { r += 1; }
1000
1001 return r;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
1013 int r = 0;
1014
1015 if (x >> 32) { x >>= 32; r += 32; }
1016
1017 return r + ecb_ld32 (x);
1018#endif
1019 }
1020#endif
1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
1056
1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
1058/* so for this version we are lazy */
1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1060ecb_function_ ecb_const int
1061ecb_popcount64 (uint64_t x)
1062{
1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1064}
1065
1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1074
1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1083
1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1097#else
1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1099 ecb_function_ ecb_const uint16_t
1100 ecb_bswap16 (uint16_t x)
1101 {
1102 return ecb_rotl16 (x, 8);
1103 }
1104
1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1106 ecb_function_ ecb_const uint32_t
1107 ecb_bswap32 (uint32_t x)
1108 {
1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1110 }
1111
1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1113 ecb_function_ ecb_const uint64_t
1114 ecb_bswap64 (uint64_t x)
1115 {
1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1117 }
1118#endif
1119
1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1121 #define ecb_unreachable() __builtin_unreachable ()
1122#else
1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1126#endif
1127
1128/* try to tell the compiler that some condition is definitely true */
1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1130
1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1132ecb_inline ecb_const uint32_t
1133ecb_byteorder_helper (void)
1134{
1135 /* the union code still generates code under pressure in gcc, */
1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
1157}
1158
1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1163
1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1166#else
1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1168#endif
1169
1170#if ECB_CPP
1171 template<typename T>
1172 static inline T ecb_div_rd (T val, T div)
1173 {
1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1175 }
1176 template<typename T>
1177 static inline T ecb_div_ru (T val, T div)
1178 {
1179 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1180 }
1181#else
1182 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1183 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1184#endif
1185
1186#if ecb_cplusplus_does_not_suck
1187 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1188 template<typename T, int N>
1189 static inline int ecb_array_length (const T (&arr)[N])
1190 {
1191 return N;
1192 }
1193#else
1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1195#endif
1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
1502#endif
1503
1504/* ECB.H END */
1505
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* if your architecture doesn't need memory fences, e.g. because it is
1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1510 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences.
1513 */
1514# error "memory fences not defined for your architecture, please report"
1515#endif
1516
1517#ifndef ECB_MEMORY_FENCE
1518# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif
1522
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
476#define inline_size static inline 1527#define inline_size ecb_inline
477 1528
478#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
479# define inline_speed static inline 1530# define inline_speed ecb_inline
480#else 1531#else
481# define inline_speed static noinline 1532# define inline_speed noinline static
482#endif 1533#endif
483 1534
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1536
486#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
523# include "ev_win32.c" 1574# include "ev_win32.c"
524#endif 1575#endif
525 1576
526/*****************************************************************************/ 1577/*****************************************************************************/
527 1578
1579/* define a suitable floor function (only used by periodics atm) */
1580
1581#if EV_USE_FLOOR
1582# include <math.h>
1583# define ev_floor(v) floor (v)
1584#else
1585
1586#include <float.h>
1587
1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1590static ev_tstamp
1591ev_floor (ev_tstamp v)
1592{
1593 /* the choice of shift factor is not terribly important */
1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1596#else
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1598#endif
1599
1600 /* argument too large for an unsigned long? */
1601 if (expect_false (v >= shift))
1602 {
1603 ev_tstamp f;
1604
1605 if (v == v - 1.)
1606 return v; /* very large number */
1607
1608 f = shift * ev_floor (v * (1. / shift));
1609 return f + ev_floor (v - f);
1610 }
1611
1612 /* special treatment for negative args? */
1613 if (expect_false (v < 0.))
1614 {
1615 ev_tstamp f = -ev_floor (-v);
1616
1617 return f - (f == v ? 0 : 1);
1618 }
1619
1620 /* fits into an unsigned long */
1621 return (unsigned long)v;
1622}
1623
1624#endif
1625
1626/*****************************************************************************/
1627
528#ifdef __linux 1628#ifdef __linux
529# include <sys/utsname.h> 1629# include <sys/utsname.h>
530#endif 1630#endif
531 1631
1632noinline ecb_cold
532static unsigned int noinline 1633static unsigned int
533ev_linux_version (void) 1634ev_linux_version (void)
534{ 1635{
535#ifdef __linux 1636#ifdef __linux
536 unsigned int v = 0; 1637 unsigned int v = 0;
537 struct utsname buf; 1638 struct utsname buf;
… …
566} 1667}
567 1668
568/*****************************************************************************/ 1669/*****************************************************************************/
569 1670
570#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
571static void noinline 1672noinline ecb_cold
1673static void
572ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
573{ 1675{
574 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
575} 1677}
576#endif 1678#endif
577 1679
578static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
579 1681
1682ecb_cold
580void 1683void
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
582{ 1685{
583 syserr_cb = cb; 1686 syserr_cb = cb;
584} 1687}
585 1688
586static void noinline 1689noinline ecb_cold
1690static void
587ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
588{ 1692{
589 if (!msg) 1693 if (!msg)
590 msg = "(libev) system error"; 1694 msg = "(libev) system error";
591 1695
… …
604 abort (); 1708 abort ();
605 } 1709 }
606} 1710}
607 1711
608static void * 1712static void *
609ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
610{ 1714{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
615 * implement realloc (x, 0) (as required by both ansi c-89 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
616 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
617 */ 1720 */
618 1721
619 if (size) 1722 if (size)
620 return realloc (ptr, size); 1723 return realloc (ptr, size);
621 1724
622 free (ptr); 1725 free (ptr);
623 return 0; 1726 return 0;
624#endif
625} 1727}
626 1728
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
628 1730
1731ecb_cold
629void 1732void
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
631{ 1734{
632 alloc = cb; 1735 alloc = cb;
633} 1736}
634 1737
635inline_speed void * 1738inline_speed void *
… …
723 #undef VAR 1826 #undef VAR
724 }; 1827 };
725 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
726 1829
727 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1831 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1832
730#else 1833#else
731 1834
732 ev_tstamp ev_rt_now; 1835 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
733 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1837 #include "ev_vars.h"
735 #undef VAR 1838 #undef VAR
736 1839
737 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
… …
752 1855
753/*****************************************************************************/ 1856/*****************************************************************************/
754 1857
755#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1859ev_tstamp
757ev_time (void) 1860ev_time (void) EV_THROW
758{ 1861{
759#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
761 { 1864 {
762 struct timespec ts; 1865 struct timespec ts;
… …
786 return ev_time (); 1889 return ev_time ();
787} 1890}
788 1891
789#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
790ev_tstamp 1893ev_tstamp
791ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
792{ 1895{
793 return ev_rt_now; 1896 return ev_rt_now;
794} 1897}
795#endif 1898#endif
796 1899
797void 1900void
798ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
799{ 1902{
800 if (delay > 0.) 1903 if (delay > 0.)
801 { 1904 {
802#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
803 struct timespec ts; 1906 struct timespec ts;
804 1907
805 EV_TS_SET (ts, delay); 1908 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1910#elif defined _WIN32
808 Sleep ((unsigned long)(delay * 1e3)); 1911 Sleep ((unsigned long)(delay * 1e3));
809#else 1912#else
810 struct timeval tv; 1913 struct timeval tv;
811 1914
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1915 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 1919 select (0, 0, 0, 0, &tv);
817#endif 1920#endif
818 } 1921 }
819} 1922}
820 1923
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 1924/*****************************************************************************/
830 1925
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1926#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1927
833/* find a suitable new size for the given array, */ 1928/* find a suitable new size for the given array, */
… …
839 1934
840 do 1935 do
841 ncur <<= 1; 1936 ncur <<= 1;
842 while (cnt > ncur); 1937 while (cnt > ncur);
843 1938
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1939 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1940 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1941 {
847 ncur *= elem; 1942 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1943 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 1944 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1946 }
852 1947
853 return ncur; 1948 return ncur;
854} 1949}
855 1950
856static noinline void * 1951noinline ecb_cold
1952static void *
857array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1954{
859 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
861} 1957}
… …
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1961
866#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
868 { \ 1964 { \
869 int ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
873 } 1969 }
874 1970
… …
886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1982 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
887 1983
888/*****************************************************************************/ 1984/*****************************************************************************/
889 1985
890/* dummy callback for pending events */ 1986/* dummy callback for pending events */
891static void noinline 1987noinline
1988static void
892pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 1990{
894} 1991}
895 1992
896void noinline 1993noinline
1994void
897ev_feed_event (EV_P_ void *w, int revents) 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
898{ 1996{
899 W w_ = (W)w; 1997 W w_ = (W)w;
900 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
901 1999
902 if (expect_false (w_->pending)) 2000 if (expect_false (w_->pending))
… …
906 w_->pending = ++pendingcnt [pri]; 2004 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2005 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_; 2006 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 2007 pendings [pri][w_->pending - 1].events = revents;
910 } 2008 }
2009
2010 pendingpri = NUMPRI - 1;
911} 2011}
912 2012
913inline_speed void 2013inline_speed void
914feed_reverse (EV_P_ W w) 2014feed_reverse (EV_P_ W w)
915{ 2015{
… …
961 if (expect_true (!anfd->reify)) 2061 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 2062 fd_event_nocheck (EV_A_ fd, revents);
963} 2063}
964 2064
965void 2065void
966ev_feed_fd_event (EV_P_ int fd, int revents) 2066ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 2067{
968 if (fd >= 0 && fd < anfdmax) 2068 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
970} 2070}
971 2071
… …
974inline_size void 2074inline_size void
975fd_reify (EV_P) 2075fd_reify (EV_P)
976{ 2076{
977 int i; 2077 int i;
978 2078
2079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2080 for (i = 0; i < fdchangecnt; ++i)
2081 {
2082 int fd = fdchanges [i];
2083 ANFD *anfd = anfds + fd;
2084
2085 if (anfd->reify & EV__IOFDSET && anfd->head)
2086 {
2087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2088
2089 if (handle != anfd->handle)
2090 {
2091 unsigned long arg;
2092
2093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2094
2095 /* handle changed, but fd didn't - we need to do it in two steps */
2096 backend_modify (EV_A_ fd, anfd->events, 0);
2097 anfd->events = 0;
2098 anfd->handle = handle;
2099 }
2100 }
2101 }
2102#endif
2103
979 for (i = 0; i < fdchangecnt; ++i) 2104 for (i = 0; i < fdchangecnt; ++i)
980 { 2105 {
981 int fd = fdchanges [i]; 2106 int fd = fdchanges [i];
982 ANFD *anfd = anfds + fd; 2107 ANFD *anfd = anfds + fd;
983 ev_io *w; 2108 ev_io *w;
… …
985 unsigned char o_events = anfd->events; 2110 unsigned char o_events = anfd->events;
986 unsigned char o_reify = anfd->reify; 2111 unsigned char o_reify = anfd->reify;
987 2112
988 anfd->reify = 0; 2113 anfd->reify = 0;
989 2114
990#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
991 if (o_reify & EV__IOFDSET)
992 {
993 unsigned long arg;
994 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
995 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
996 printf ("oi %d %x\n", fd, anfd->handle);//D
997 }
998#endif
999
1000 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1001 { 2116 {
1002 anfd->events = 0; 2117 anfd->events = 0;
1003 2118
1004 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1014 2129
1015 fdchangecnt = 0; 2130 fdchangecnt = 0;
1016} 2131}
1017 2132
1018/* something about the given fd changed */ 2133/* something about the given fd changed */
1019inline_size void 2134inline_size
2135void
1020fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
1021{ 2137{
1022 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
1023 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
1024 2140
… …
1029 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
1030 } 2146 }
1031} 2147}
1032 2148
1033/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2149/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1034inline_speed void 2150inline_speed ecb_cold void
1035fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
1036{ 2152{
1037 ev_io *w; 2153 ev_io *w;
1038 2154
1039 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
1042 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2158 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1043 } 2159 }
1044} 2160}
1045 2161
1046/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
1047inline_size int 2163inline_size ecb_cold int
1048fd_valid (int fd) 2164fd_valid (int fd)
1049{ 2165{
1050#ifdef _WIN32 2166#ifdef _WIN32
1051 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1052#else 2168#else
1053 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1054#endif 2170#endif
1055} 2171}
1056 2172
1057/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1058static void noinline 2174noinline ecb_cold
2175static void
1059fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1060{ 2177{
1061 int fd; 2178 int fd;
1062 2179
1063 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1065 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1066 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1067} 2184}
1068 2185
1069/* called on ENOMEM in select/poll to kill some fds and retry */ 2186/* called on ENOMEM in select/poll to kill some fds and retry */
1070static void noinline 2187noinline ecb_cold
2188static void
1071fd_enomem (EV_P) 2189fd_enomem (EV_P)
1072{ 2190{
1073 int fd; 2191 int fd;
1074 2192
1075 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1079 break; 2197 break;
1080 } 2198 }
1081} 2199}
1082 2200
1083/* usually called after fork if backend needs to re-arm all fds from scratch */ 2201/* usually called after fork if backend needs to re-arm all fds from scratch */
1084static void noinline 2202noinline
2203static void
1085fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1086{ 2205{
1087 int fd; 2206 int fd;
1088 2207
1089 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
1270 2389
1271/*****************************************************************************/ 2390/*****************************************************************************/
1272 2391
1273#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1274 2393
1275static void noinline 2394noinline ecb_cold
2395static void
1276evpipe_init (EV_P) 2396evpipe_init (EV_P)
1277{ 2397{
1278 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
1279 { 2399 {
2400 int fds [2];
2401
1280# if EV_USE_EVENTFD 2402# if EV_USE_EVENTFD
2403 fds [0] = -1;
1281 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2404 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1282 if (evfd < 0 && errno == EINVAL) 2405 if (fds [1] < 0 && errno == EINVAL)
1283 evfd = eventfd (0, 0); 2406 fds [1] = eventfd (0, 0);
1284 2407
1285 if (evfd >= 0) 2408 if (fds [1] < 0)
2409# endif
1286 { 2410 {
2411 while (pipe (fds))
2412 ev_syserr ("(libev) error creating signal/async pipe");
2413
2414 fd_intern (fds [0]);
2415 }
2416
1287 evpipe [0] = -1; 2417 evpipe [0] = fds [0];
1288 fd_intern (evfd); /* doing it twice doesn't hurt */ 2418
1289 ev_io_set (&pipe_w, evfd, EV_READ); 2419 if (evpipe [1] < 0)
2420 evpipe [1] = fds [1]; /* first call, set write fd */
2421 else
2422 {
2423 /* on subsequent calls, do not change evpipe [1] */
2424 /* so that evpipe_write can always rely on its value. */
2425 /* this branch does not do anything sensible on windows, */
2426 /* so must not be executed on windows */
2427
2428 dup2 (fds [1], evpipe [1]);
2429 close (fds [1]);
2430 }
2431
2432 fd_intern (evpipe [1]);
2433
2434 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2435 ev_io_start (EV_A_ &pipe_w);
2436 ev_unref (EV_A); /* watcher should not keep loop alive */
2437 }
2438}
2439
2440inline_speed void
2441evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2442{
2443 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2444
2445 if (expect_true (*flag))
2446 return;
2447
2448 *flag = 1;
2449 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2450
2451 pipe_write_skipped = 1;
2452
2453 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2454
2455 if (pipe_write_wanted)
2456 {
2457 int old_errno;
2458
2459 pipe_write_skipped = 0;
2460 ECB_MEMORY_FENCE_RELEASE;
2461
2462 old_errno = errno; /* save errno because write will clobber it */
2463
2464#if EV_USE_EVENTFD
2465 if (evpipe [0] < 0)
2466 {
2467 uint64_t counter = 1;
2468 write (evpipe [1], &counter, sizeof (uint64_t));
1290 } 2469 }
1291 else 2470 else
1292# endif 2471#endif
1293 { 2472 {
1294 while (pipe (evpipe)) 2473#ifdef _WIN32
1295 ev_syserr ("(libev) error creating signal/async pipe"); 2474 WSABUF buf;
1296 2475 DWORD sent;
1297 fd_intern (evpipe [0]); 2476 buf.buf = &buf;
1298 fd_intern (evpipe [1]); 2477 buf.len = 1;
1299 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2478 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2479#else
2480 write (evpipe [1], &(evpipe [1]), 1);
2481#endif
1300 } 2482 }
1301
1302 ev_io_start (EV_A_ &pipe_w);
1303 ev_unref (EV_A); /* watcher should not keep loop alive */
1304 }
1305}
1306
1307inline_size void
1308evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1309{
1310 if (!*flag)
1311 {
1312 int old_errno = errno; /* save errno because write might clobber it */
1313 char dummy;
1314
1315 *flag = 1;
1316
1317#if EV_USE_EVENTFD
1318 if (evfd >= 0)
1319 {
1320 uint64_t counter = 1;
1321 write (evfd, &counter, sizeof (uint64_t));
1322 }
1323 else
1324#endif
1325 /* win32 people keep sending patches that change this write() to send() */
1326 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1327 /* so when you think this write should be a send instead, please find out */
1328 /* where your send() is from - it's definitely not the microsoft send, and */
1329 /* tell me. thank you. */
1330 write (evpipe [1], &dummy, 1);
1331 2483
1332 errno = old_errno; 2484 errno = old_errno;
1333 } 2485 }
1334} 2486}
1335 2487
… …
1338static void 2490static void
1339pipecb (EV_P_ ev_io *iow, int revents) 2491pipecb (EV_P_ ev_io *iow, int revents)
1340{ 2492{
1341 int i; 2493 int i;
1342 2494
2495 if (revents & EV_READ)
2496 {
1343#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1344 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1345 { 2499 {
1346 uint64_t counter; 2500 uint64_t counter;
1347 read (evfd, &counter, sizeof (uint64_t)); 2501 read (evpipe [1], &counter, sizeof (uint64_t));
1348 } 2502 }
1349 else 2503 else
1350#endif 2504#endif
1351 { 2505 {
1352 char dummy; 2506 char dummy[4];
1353 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2507#ifdef _WIN32
2508 WSABUF buf;
2509 DWORD recvd;
2510 DWORD flags = 0;
2511 buf.buf = dummy;
2512 buf.len = sizeof (dummy);
2513 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2514#else
1354 read (evpipe [0], &dummy, 1); 2515 read (evpipe [0], &dummy, sizeof (dummy));
2516#endif
2517 }
1355 } 2518 }
2519
2520 pipe_write_skipped = 0;
2521
2522 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1356 2523
1357#if EV_SIGNAL_ENABLE 2524#if EV_SIGNAL_ENABLE
1358 if (sig_pending) 2525 if (sig_pending)
1359 { 2526 {
1360 sig_pending = 0; 2527 sig_pending = 0;
2528
2529 ECB_MEMORY_FENCE;
1361 2530
1362 for (i = EV_NSIG - 1; i--; ) 2531 for (i = EV_NSIG - 1; i--; )
1363 if (expect_false (signals [i].pending)) 2532 if (expect_false (signals [i].pending))
1364 ev_feed_signal_event (EV_A_ i + 1); 2533 ev_feed_signal_event (EV_A_ i + 1);
1365 } 2534 }
… …
1367 2536
1368#if EV_ASYNC_ENABLE 2537#if EV_ASYNC_ENABLE
1369 if (async_pending) 2538 if (async_pending)
1370 { 2539 {
1371 async_pending = 0; 2540 async_pending = 0;
2541
2542 ECB_MEMORY_FENCE;
1372 2543
1373 for (i = asynccnt; i--; ) 2544 for (i = asynccnt; i--; )
1374 if (asyncs [i]->sent) 2545 if (asyncs [i]->sent)
1375 { 2546 {
1376 asyncs [i]->sent = 0; 2547 asyncs [i]->sent = 0;
2548 ECB_MEMORY_FENCE_RELEASE;
1377 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2549 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1378 } 2550 }
1379 } 2551 }
1380#endif 2552#endif
1381} 2553}
1382 2554
1383/*****************************************************************************/ 2555/*****************************************************************************/
1384 2556
1385void 2557void
1386ev_feed_signal (int signum) 2558ev_feed_signal (int signum) EV_THROW
1387{ 2559{
1388#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
2561 EV_P;
2562 ECB_MEMORY_FENCE_ACQUIRE;
1389 EV_P = signals [signum - 1].loop; 2563 EV_A = signals [signum - 1].loop;
1390 2564
1391 if (!EV_A) 2565 if (!EV_A)
1392 return; 2566 return;
1393#endif 2567#endif
1394 2568
… …
1404#endif 2578#endif
1405 2579
1406 ev_feed_signal (signum); 2580 ev_feed_signal (signum);
1407} 2581}
1408 2582
1409void noinline 2583noinline
2584void
1410ev_feed_signal_event (EV_P_ int signum) 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
1411{ 2586{
1412 WL w; 2587 WL w;
1413 2588
1414 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1415 return; 2590 return;
1416 2591
1417 --signum; 2592 --signum;
1418 2593
1419#if EV_MULTIPLICITY 2594#if EV_MULTIPLICITY
… …
1423 if (expect_false (signals [signum].loop != EV_A)) 2598 if (expect_false (signals [signum].loop != EV_A))
1424 return; 2599 return;
1425#endif 2600#endif
1426 2601
1427 signals [signum].pending = 0; 2602 signals [signum].pending = 0;
2603 ECB_MEMORY_FENCE_RELEASE;
1428 2604
1429 for (w = signals [signum].head; w; w = w->next) 2605 for (w = signals [signum].head; w; w = w->next)
1430 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1431} 2607}
1432 2608
… …
1530#endif 2706#endif
1531#if EV_USE_SELECT 2707#if EV_USE_SELECT
1532# include "ev_select.c" 2708# include "ev_select.c"
1533#endif 2709#endif
1534 2710
1535int 2711ecb_cold int
1536ev_version_major (void) 2712ev_version_major (void) EV_THROW
1537{ 2713{
1538 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
1539} 2715}
1540 2716
1541int 2717ecb_cold int
1542ev_version_minor (void) 2718ev_version_minor (void) EV_THROW
1543{ 2719{
1544 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
1545} 2721}
1546 2722
1547/* return true if we are running with elevated privileges and should ignore env variables */ 2723/* return true if we are running with elevated privileges and should ignore env variables */
1548int inline_size 2724inline_size ecb_cold int
1549enable_secure (void) 2725enable_secure (void)
1550{ 2726{
1551#ifdef _WIN32 2727#ifdef _WIN32
1552 return 0; 2728 return 0;
1553#else 2729#else
1554 return getuid () != geteuid () 2730 return getuid () != geteuid ()
1555 || getgid () != getegid (); 2731 || getgid () != getegid ();
1556#endif 2732#endif
1557} 2733}
1558 2734
2735ecb_cold
1559unsigned int 2736unsigned int
1560ev_supported_backends (void) 2737ev_supported_backends (void) EV_THROW
1561{ 2738{
1562 unsigned int flags = 0; 2739 unsigned int flags = 0;
1563 2740
1564 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1565 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2742 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1568 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1569 2746
1570 return flags; 2747 return flags;
1571} 2748}
1572 2749
2750ecb_cold
1573unsigned int 2751unsigned int
1574ev_recommended_backends (void) 2752ev_recommended_backends (void) EV_THROW
1575{ 2753{
1576 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
1577 2755
1578#ifndef __NetBSD__ 2756#ifndef __NetBSD__
1579 /* kqueue is borked on everything but netbsd apparently */ 2757 /* kqueue is borked on everything but netbsd apparently */
… …
1590#endif 2768#endif
1591 2769
1592 return flags; 2770 return flags;
1593} 2771}
1594 2772
2773ecb_cold
1595unsigned int 2774unsigned int
1596ev_embeddable_backends (void) 2775ev_embeddable_backends (void) EV_THROW
1597{ 2776{
1598 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1599 2778
1600 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2779 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1601 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2780 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1603 2782
1604 return flags; 2783 return flags;
1605} 2784}
1606 2785
1607unsigned int 2786unsigned int
1608ev_backend (EV_P) 2787ev_backend (EV_P) EV_THROW
1609{ 2788{
1610 return backend; 2789 return backend;
1611} 2790}
1612 2791
1613#if EV_FEATURE_API 2792#if EV_FEATURE_API
1614unsigned int 2793unsigned int
1615ev_iteration (EV_P) 2794ev_iteration (EV_P) EV_THROW
1616{ 2795{
1617 return loop_count; 2796 return loop_count;
1618} 2797}
1619 2798
1620unsigned int 2799unsigned int
1621ev_depth (EV_P) 2800ev_depth (EV_P) EV_THROW
1622{ 2801{
1623 return loop_depth; 2802 return loop_depth;
1624} 2803}
1625 2804
1626void 2805void
1627ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2806ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1628{ 2807{
1629 io_blocktime = interval; 2808 io_blocktime = interval;
1630} 2809}
1631 2810
1632void 2811void
1633ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2812ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1634{ 2813{
1635 timeout_blocktime = interval; 2814 timeout_blocktime = interval;
1636} 2815}
1637 2816
1638void 2817void
1639ev_set_userdata (EV_P_ void *data) 2818ev_set_userdata (EV_P_ void *data) EV_THROW
1640{ 2819{
1641 userdata = data; 2820 userdata = data;
1642} 2821}
1643 2822
1644void * 2823void *
1645ev_userdata (EV_P) 2824ev_userdata (EV_P) EV_THROW
1646{ 2825{
1647 return userdata; 2826 return userdata;
1648} 2827}
1649 2828
2829void
1650void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2830ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1651{ 2831{
1652 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
1653} 2833}
1654 2834
2835void
1655void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2836ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1656{ 2837{
1657 release_cb = release; 2838 release_cb = release;
1658 acquire_cb = acquire; 2839 acquire_cb = acquire;
1659} 2840}
1660#endif 2841#endif
1661 2842
1662/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
1663static void noinline 2844noinline ecb_cold
2845static void
1664loop_init (EV_P_ unsigned int flags) 2846loop_init (EV_P_ unsigned int flags) EV_THROW
1665{ 2847{
1666 if (!backend) 2848 if (!backend)
1667 { 2849 {
1668 origflags = flags; 2850 origflags = flags;
1669 2851
… …
1696 if (!(flags & EVFLAG_NOENV) 2878 if (!(flags & EVFLAG_NOENV)
1697 && !enable_secure () 2879 && !enable_secure ()
1698 && getenv ("LIBEV_FLAGS")) 2880 && getenv ("LIBEV_FLAGS"))
1699 flags = atoi (getenv ("LIBEV_FLAGS")); 2881 flags = atoi (getenv ("LIBEV_FLAGS"));
1700 2882
1701 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
1702 mn_now = get_clock (); 2884 mn_now = get_clock ();
1703 now_floor = mn_now; 2885 now_floor = mn_now;
1704 rtmn_diff = ev_rt_now - mn_now; 2886 rtmn_diff = ev_rt_now - mn_now;
1705#if EV_FEATURE_API 2887#if EV_FEATURE_API
1706 invoke_cb = ev_invoke_pending; 2888 invoke_cb = ev_invoke_pending;
1707#endif 2889#endif
1708 2890
1709 io_blocktime = 0.; 2891 io_blocktime = 0.;
1710 timeout_blocktime = 0.; 2892 timeout_blocktime = 0.;
1711 backend = 0; 2893 backend = 0;
1712 backend_fd = -1; 2894 backend_fd = -1;
1713 sig_pending = 0; 2895 sig_pending = 0;
1714#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
1715 async_pending = 0; 2897 async_pending = 0;
1716#endif 2898#endif
2899 pipe_write_skipped = 0;
2900 pipe_write_wanted = 0;
2901 evpipe [0] = -1;
2902 evpipe [1] = -1;
1717#if EV_USE_INOTIFY 2903#if EV_USE_INOTIFY
1718 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2904 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1719#endif 2905#endif
1720#if EV_USE_SIGNALFD 2906#if EV_USE_SIGNALFD
1721 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2907 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1722#endif 2908#endif
1723 2909
1724 if (!(flags & EVBACKEND_MASK)) 2910 if (!(flags & EVBACKEND_MASK))
1725 flags |= ev_recommended_backends (); 2911 flags |= ev_recommended_backends ();
1726 2912
… …
1751#endif 2937#endif
1752 } 2938 }
1753} 2939}
1754 2940
1755/* free up a loop structure */ 2941/* free up a loop structure */
2942ecb_cold
1756void 2943void
1757ev_loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
1758{ 2945{
1759 int i; 2946 int i;
1760 2947
… …
1772 EV_INVOKE_PENDING; 2959 EV_INVOKE_PENDING;
1773 } 2960 }
1774#endif 2961#endif
1775 2962
1776#if EV_CHILD_ENABLE 2963#if EV_CHILD_ENABLE
1777 if (ev_is_active (&childev)) 2964 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1778 { 2965 {
1779 ev_ref (EV_A); /* child watcher */ 2966 ev_ref (EV_A); /* child watcher */
1780 ev_signal_stop (EV_A_ &childev); 2967 ev_signal_stop (EV_A_ &childev);
1781 } 2968 }
1782#endif 2969#endif
… …
1784 if (ev_is_active (&pipe_w)) 2971 if (ev_is_active (&pipe_w))
1785 { 2972 {
1786 /*ev_ref (EV_A);*/ 2973 /*ev_ref (EV_A);*/
1787 /*ev_io_stop (EV_A_ &pipe_w);*/ 2974 /*ev_io_stop (EV_A_ &pipe_w);*/
1788 2975
1789#if EV_USE_EVENTFD
1790 if (evfd >= 0)
1791 close (evfd);
1792#endif
1793
1794 if (evpipe [0] >= 0)
1795 {
1796 EV_WIN32_CLOSE_FD (evpipe [0]); 2976 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1797 EV_WIN32_CLOSE_FD (evpipe [1]); 2977 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1798 }
1799 } 2978 }
1800 2979
1801#if EV_USE_SIGNALFD 2980#if EV_USE_SIGNALFD
1802 if (ev_is_active (&sigfd_w)) 2981 if (ev_is_active (&sigfd_w))
1803 close (sigfd); 2982 close (sigfd);
… …
1889#endif 3068#endif
1890#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
1891 infy_fork (EV_A); 3070 infy_fork (EV_A);
1892#endif 3071#endif
1893 3072
3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1894 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
1895 { 3075 {
1896 /* this "locks" the handlers against writing to the pipe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1897 /* while we modify the fd vars */
1898 sig_pending = 1;
1899#if EV_ASYNC_ENABLE
1900 async_pending = 1;
1901#endif
1902 3077
1903 ev_ref (EV_A); 3078 ev_ref (EV_A);
1904 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
1905 3080
1906#if EV_USE_EVENTFD
1907 if (evfd >= 0)
1908 close (evfd);
1909#endif
1910
1911 if (evpipe [0] >= 0) 3081 if (evpipe [0] >= 0)
1912 {
1913 EV_WIN32_CLOSE_FD (evpipe [0]); 3082 EV_WIN32_CLOSE_FD (evpipe [0]);
1914 EV_WIN32_CLOSE_FD (evpipe [1]);
1915 }
1916 3083
1917#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1918 evpipe_init (EV_A); 3084 evpipe_init (EV_A);
1919 /* now iterate over everything, in case we missed something */ 3085 /* iterate over everything, in case we missed something before */
1920 pipecb (EV_A_ &pipe_w, EV_READ); 3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1921#endif
1922 } 3087 }
3088#endif
1923 3089
1924 postfork = 0; 3090 postfork = 0;
1925} 3091}
1926 3092
1927#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
1928 3094
3095ecb_cold
1929struct ev_loop * 3096struct ev_loop *
1930ev_loop_new (unsigned int flags) 3097ev_loop_new (unsigned int flags) EV_THROW
1931{ 3098{
1932 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1933 3100
1934 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
1935 loop_init (EV_A_ flags); 3102 loop_init (EV_A_ flags);
… …
1942} 3109}
1943 3110
1944#endif /* multiplicity */ 3111#endif /* multiplicity */
1945 3112
1946#if EV_VERIFY 3113#if EV_VERIFY
1947static void noinline 3114noinline ecb_cold
3115static void
1948verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
1949{ 3117{
1950 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3118 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1951 3119
1952 if (w->pending) 3120 if (w->pending)
1953 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3121 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1954} 3122}
1955 3123
1956static void noinline 3124noinline ecb_cold
3125static void
1957verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
1958{ 3127{
1959 int i; 3128 int i;
1960 3129
1961 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1966 3135
1967 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1968 } 3137 }
1969} 3138}
1970 3139
1971static void noinline 3140noinline ecb_cold
3141static void
1972array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
1973{ 3143{
1974 while (cnt--) 3144 while (cnt--)
1975 { 3145 {
1976 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1978 } 3148 }
1979} 3149}
1980#endif 3150#endif
1981 3151
1982#if EV_FEATURE_API 3152#if EV_FEATURE_API
1983void 3153void ecb_cold
1984ev_verify (EV_P) 3154ev_verify (EV_P) EV_THROW
1985{ 3155{
1986#if EV_VERIFY 3156#if EV_VERIFY
1987 int i; 3157 int i;
1988 WL w; 3158 WL w, w2;
1989 3159
1990 assert (activecnt >= -1); 3160 assert (activecnt >= -1);
1991 3161
1992 assert (fdchangemax >= fdchangecnt); 3162 assert (fdchangemax >= fdchangecnt);
1993 for (i = 0; i < fdchangecnt; ++i) 3163 for (i = 0; i < fdchangecnt; ++i)
1994 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3164 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1995 3165
1996 assert (anfdmax >= 0); 3166 assert (anfdmax >= 0);
1997 for (i = 0; i < anfdmax; ++i) 3167 for (i = 0; i < anfdmax; ++i)
3168 {
3169 int j = 0;
3170
1998 for (w = anfds [i].head; w; w = w->next) 3171 for (w = w2 = anfds [i].head; w; w = w->next)
1999 { 3172 {
2000 verify_watcher (EV_A_ (W)w); 3173 verify_watcher (EV_A_ (W)w);
3174
3175 if (j++ & 1)
3176 {
3177 assert (("libev: io watcher list contains a loop", w != w2));
3178 w2 = w2->next;
3179 }
3180
2001 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3181 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2002 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3182 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2003 } 3183 }
3184 }
2004 3185
2005 assert (timermax >= timercnt); 3186 assert (timermax >= timercnt);
2006 verify_heap (EV_A_ timers, timercnt); 3187 verify_heap (EV_A_ timers, timercnt);
2007 3188
2008#if EV_PERIODIC_ENABLE 3189#if EV_PERIODIC_ENABLE
… …
2054#endif 3235#endif
2055} 3236}
2056#endif 3237#endif
2057 3238
2058#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
2059struct ev_loop * 3241struct ev_loop *
2060#else 3242#else
2061int 3243int
2062#endif 3244#endif
2063ev_default_loop (unsigned int flags) 3245ev_default_loop (unsigned int flags) EV_THROW
2064{ 3246{
2065 if (!ev_default_loop_ptr) 3247 if (!ev_default_loop_ptr)
2066 { 3248 {
2067#if EV_MULTIPLICITY 3249#if EV_MULTIPLICITY
2068 EV_P = ev_default_loop_ptr = &default_loop_struct; 3250 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2087 3269
2088 return ev_default_loop_ptr; 3270 return ev_default_loop_ptr;
2089} 3271}
2090 3272
2091void 3273void
2092ev_loop_fork (EV_P) 3274ev_loop_fork (EV_P) EV_THROW
2093{ 3275{
2094 postfork = 1; /* must be in line with ev_default_fork */ 3276 postfork = 1;
2095} 3277}
2096 3278
2097/*****************************************************************************/ 3279/*****************************************************************************/
2098 3280
2099void 3281void
… …
2101{ 3283{
2102 EV_CB_INVOKE ((W)w, revents); 3284 EV_CB_INVOKE ((W)w, revents);
2103} 3285}
2104 3286
2105unsigned int 3287unsigned int
2106ev_pending_count (EV_P) 3288ev_pending_count (EV_P) EV_THROW
2107{ 3289{
2108 int pri; 3290 int pri;
2109 unsigned int count = 0; 3291 unsigned int count = 0;
2110 3292
2111 for (pri = NUMPRI; pri--; ) 3293 for (pri = NUMPRI; pri--; )
2112 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
2113 3295
2114 return count; 3296 return count;
2115} 3297}
2116 3298
2117void noinline 3299noinline
3300void
2118ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
2119{ 3302{
2120 int pri; 3303 pendingpri = NUMPRI;
2121 3304
2122 for (pri = NUMPRI; pri--; ) 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3306 {
3307 --pendingpri;
3308
2123 while (pendingcnt [pri]) 3309 while (pendingcnt [pendingpri])
2124 { 3310 {
2125 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3311 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2126 3312
2127 p->w->pending = 0; 3313 p->w->pending = 0;
2128 EV_CB_INVOKE (p->w, p->events); 3314 EV_CB_INVOKE (p->w, p->events);
2129 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2130 } 3316 }
3317 }
2131} 3318}
2132 3319
2133#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2134/* make idle watchers pending. this handles the "call-idle */ 3321/* make idle watchers pending. this handles the "call-idle */
2135/* only when higher priorities are idle" logic */ 3322/* only when higher priorities are idle" logic */
… …
2193 } 3380 }
2194} 3381}
2195 3382
2196#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2197 3384
2198inline_speed 3385noinline
3386static void
2199periodic_recalc (EV_P_ ev_periodic *w) 3387periodic_recalc (EV_P_ ev_periodic *w)
2200{ 3388{
2201 /* TODO: use slow but potentially more correct incremental algo, */ 3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2202 /* also do not rely on ceil */ 3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2203 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3391
3392 /* the above almost always errs on the low side */
3393 while (at <= ev_rt_now)
3394 {
3395 ev_tstamp nat = at + w->interval;
3396
3397 /* when resolution fails us, we use ev_rt_now */
3398 if (expect_false (nat == at))
3399 {
3400 at = ev_rt_now;
3401 break;
3402 }
3403
3404 at = nat;
3405 }
3406
3407 ev_at (w) = at;
2204} 3408}
2205 3409
2206/* make periodics pending */ 3410/* make periodics pending */
2207inline_size void 3411inline_size void
2208periodics_reify (EV_P) 3412periodics_reify (EV_P)
2209{ 3413{
2210 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
2211 3415
2212 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3416 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2213 { 3417 {
2214 int feed_count = 0;
2215
2216 do 3418 do
2217 { 3419 {
2218 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3420 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2219 3421
2220 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3422 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2230 downheap (periodics, periodiccnt, HEAP0); 3432 downheap (periodics, periodiccnt, HEAP0);
2231 } 3433 }
2232 else if (w->interval) 3434 else if (w->interval)
2233 { 3435 {
2234 periodic_recalc (EV_A_ w); 3436 periodic_recalc (EV_A_ w);
2235
2236 /* if next trigger time is not sufficiently in the future, put it there */
2237 /* this might happen because of floating point inexactness */
2238 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2239 {
2240 ev_at (w) += w->interval;
2241
2242 /* if interval is unreasonably low we might still have a time in the past */
2243 /* so correct this. this will make the periodic very inexact, but the user */
2244 /* has effectively asked to get triggered more often than possible */
2245 if (ev_at (w) < ev_rt_now)
2246 ev_at (w) = ev_rt_now;
2247 }
2248
2249 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
2250 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2251 } 3439 }
2252 else 3440 else
2253 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3441 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2261 } 3449 }
2262} 3450}
2263 3451
2264/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
2265/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3453/* TODO: maybe ensure that at least one event happens when jumping forward? */
2266static void noinline 3454noinline ecb_cold
3455static void
2267periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
2268{ 3457{
2269 int i; 3458 int i;
2270 3459
2271 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
2284 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
2285} 3474}
2286#endif 3475#endif
2287 3476
2288/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
2289static void noinline 3478noinline ecb_cold
3479static void
2290timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
2291{ 3481{
2292 int i; 3482 int i;
2293 3483
2294 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
2331 * doesn't hurt either as we only do this on time-jumps or 3521 * doesn't hurt either as we only do this on time-jumps or
2332 * in the unlikely event of having been preempted here. 3522 * in the unlikely event of having been preempted here.
2333 */ 3523 */
2334 for (i = 4; --i; ) 3524 for (i = 4; --i; )
2335 { 3525 {
3526 ev_tstamp diff;
2336 rtmn_diff = ev_rt_now - mn_now; 3527 rtmn_diff = ev_rt_now - mn_now;
2337 3528
3529 diff = odiff - rtmn_diff;
3530
2338 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3531 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2339 return; /* all is well */ 3532 return; /* all is well */
2340 3533
2341 ev_rt_now = ev_time (); 3534 ev_rt_now = ev_time ();
2342 mn_now = get_clock (); 3535 mn_now = get_clock ();
2343 now_floor = mn_now; 3536 now_floor = mn_now;
… …
2365 3558
2366 mn_now = ev_rt_now; 3559 mn_now = ev_rt_now;
2367 } 3560 }
2368} 3561}
2369 3562
2370void 3563int
2371ev_run (EV_P_ int flags) 3564ev_run (EV_P_ int flags)
2372{ 3565{
2373#if EV_FEATURE_API 3566#if EV_FEATURE_API
2374 ++loop_depth; 3567 ++loop_depth;
2375#endif 3568#endif
… …
2433 ev_tstamp prev_mn_now = mn_now; 3626 ev_tstamp prev_mn_now = mn_now;
2434 3627
2435 /* update time to cancel out callback processing overhead */ 3628 /* update time to cancel out callback processing overhead */
2436 time_update (EV_A_ 1e100); 3629 time_update (EV_A_ 1e100);
2437 3630
3631 /* from now on, we want a pipe-wake-up */
3632 pipe_write_wanted = 1;
3633
3634 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3635
2438 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3636 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2439 { 3637 {
2440 waittime = MAX_BLOCKTIME; 3638 waittime = MAX_BLOCKTIME;
2441 3639
2442 if (timercnt) 3640 if (timercnt)
2443 { 3641 {
2444 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3642 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2445 if (waittime > to) waittime = to; 3643 if (waittime > to) waittime = to;
2446 } 3644 }
2447 3645
2448#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2449 if (periodiccnt) 3647 if (periodiccnt)
2450 { 3648 {
2451 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3649 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2452 if (waittime > to) waittime = to; 3650 if (waittime > to) waittime = to;
2453 } 3651 }
2454#endif 3652#endif
2455 3653
2456 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3654 /* don't let timeouts decrease the waittime below timeout_blocktime */
2457 if (expect_false (waittime < timeout_blocktime)) 3655 if (expect_false (waittime < timeout_blocktime))
2458 waittime = timeout_blocktime; 3656 waittime = timeout_blocktime;
3657
3658 /* at this point, we NEED to wait, so we have to ensure */
3659 /* to pass a minimum nonzero value to the backend */
3660 if (expect_false (waittime < backend_mintime))
3661 waittime = backend_mintime;
2459 3662
2460 /* extra check because io_blocktime is commonly 0 */ 3663 /* extra check because io_blocktime is commonly 0 */
2461 if (expect_false (io_blocktime)) 3664 if (expect_false (io_blocktime))
2462 { 3665 {
2463 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3666 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2464 3667
2465 if (sleeptime > waittime - backend_fudge) 3668 if (sleeptime > waittime - backend_mintime)
2466 sleeptime = waittime - backend_fudge; 3669 sleeptime = waittime - backend_mintime;
2467 3670
2468 if (expect_true (sleeptime > 0.)) 3671 if (expect_true (sleeptime > 0.))
2469 { 3672 {
2470 ev_sleep (sleeptime); 3673 ev_sleep (sleeptime);
2471 waittime -= sleeptime; 3674 waittime -= sleeptime;
… …
2478#endif 3681#endif
2479 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3682 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2480 backend_poll (EV_A_ waittime); 3683 backend_poll (EV_A_ waittime);
2481 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2482 3685
3686 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3687
3688 ECB_MEMORY_FENCE_ACQUIRE;
3689 if (pipe_write_skipped)
3690 {
3691 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3692 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3693 }
3694
3695
2483 /* update ev_rt_now, do magic */ 3696 /* update ev_rt_now, do magic */
2484 time_update (EV_A_ waittime + sleeptime); 3697 time_update (EV_A_ waittime + sleeptime);
2485 } 3698 }
2486 3699
2487 /* queue pending timers and reschedule them */ 3700 /* queue pending timers and reschedule them */
… …
2513 loop_done = EVBREAK_CANCEL; 3726 loop_done = EVBREAK_CANCEL;
2514 3727
2515#if EV_FEATURE_API 3728#if EV_FEATURE_API
2516 --loop_depth; 3729 --loop_depth;
2517#endif 3730#endif
2518}
2519 3731
3732 return activecnt;
3733}
3734
2520void 3735void
2521ev_break (EV_P_ int how) 3736ev_break (EV_P_ int how) EV_THROW
2522{ 3737{
2523 loop_done = how; 3738 loop_done = how;
2524} 3739}
2525 3740
2526void 3741void
2527ev_ref (EV_P) 3742ev_ref (EV_P) EV_THROW
2528{ 3743{
2529 ++activecnt; 3744 ++activecnt;
2530} 3745}
2531 3746
2532void 3747void
2533ev_unref (EV_P) 3748ev_unref (EV_P) EV_THROW
2534{ 3749{
2535 --activecnt; 3750 --activecnt;
2536} 3751}
2537 3752
2538void 3753void
2539ev_now_update (EV_P) 3754ev_now_update (EV_P) EV_THROW
2540{ 3755{
2541 time_update (EV_A_ 1e100); 3756 time_update (EV_A_ 1e100);
2542} 3757}
2543 3758
2544void 3759void
2545ev_suspend (EV_P) 3760ev_suspend (EV_P) EV_THROW
2546{ 3761{
2547 ev_now_update (EV_A); 3762 ev_now_update (EV_A);
2548} 3763}
2549 3764
2550void 3765void
2551ev_resume (EV_P) 3766ev_resume (EV_P) EV_THROW
2552{ 3767{
2553 ev_tstamp mn_prev = mn_now; 3768 ev_tstamp mn_prev = mn_now;
2554 3769
2555 ev_now_update (EV_A); 3770 ev_now_update (EV_A);
2556 timers_reschedule (EV_A_ mn_now - mn_prev); 3771 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2595 w->pending = 0; 3810 w->pending = 0;
2596 } 3811 }
2597} 3812}
2598 3813
2599int 3814int
2600ev_clear_pending (EV_P_ void *w) 3815ev_clear_pending (EV_P_ void *w) EV_THROW
2601{ 3816{
2602 W w_ = (W)w; 3817 W w_ = (W)w;
2603 int pending = w_->pending; 3818 int pending = w_->pending;
2604 3819
2605 if (expect_true (pending)) 3820 if (expect_true (pending))
… …
2637 w->active = 0; 3852 w->active = 0;
2638} 3853}
2639 3854
2640/*****************************************************************************/ 3855/*****************************************************************************/
2641 3856
2642void noinline 3857noinline
3858void
2643ev_io_start (EV_P_ ev_io *w) 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
2644{ 3860{
2645 int fd = w->fd; 3861 int fd = w->fd;
2646 3862
2647 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
2648 return; 3864 return;
… …
2654 3870
2655 ev_start (EV_A_ (W)w, 1); 3871 ev_start (EV_A_ (W)w, 1);
2656 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3872 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2657 wlist_add (&anfds[fd].head, (WL)w); 3873 wlist_add (&anfds[fd].head, (WL)w);
2658 3874
3875 /* common bug, apparently */
3876 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3877
2659 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3878 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2660 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
2661 3880
2662 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
2663} 3882}
2664 3883
2665void noinline 3884noinline
3885void
2666ev_io_stop (EV_P_ ev_io *w) 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
2667{ 3887{
2668 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
2669 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
2670 return; 3890 return;
2671 3891
… …
2679 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2680 3900
2681 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2682} 3902}
2683 3903
2684void noinline 3904noinline
3905void
2685ev_timer_start (EV_P_ ev_timer *w) 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2686{ 3907{
2687 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
2688 return; 3909 return;
2689 3910
2690 ev_at (w) += mn_now; 3911 ev_at (w) += mn_now;
… …
2703 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2704 3925
2705 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3926 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2706} 3927}
2707 3928
2708void noinline 3929noinline
3930void
2709ev_timer_stop (EV_P_ ev_timer *w) 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2710{ 3932{
2711 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
2713 return; 3935 return;
2714 3936
… …
2733 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
2734 3956
2735 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
2736} 3958}
2737 3959
2738void noinline 3960noinline
3961void
2739ev_timer_again (EV_P_ ev_timer *w) 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2740{ 3963{
2741 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3965
3966 clear_pending (EV_A_ (W)w);
2742 3967
2743 if (ev_is_active (w)) 3968 if (ev_is_active (w))
2744 { 3969 {
2745 if (w->repeat) 3970 if (w->repeat)
2746 { 3971 {
… …
2759 3984
2760 EV_FREQUENT_CHECK; 3985 EV_FREQUENT_CHECK;
2761} 3986}
2762 3987
2763ev_tstamp 3988ev_tstamp
2764ev_timer_remaining (EV_P_ ev_timer *w) 3989ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2765{ 3990{
2766 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2767} 3992}
2768 3993
2769#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
2770void noinline 3995noinline
3996void
2771ev_periodic_start (EV_P_ ev_periodic *w) 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2772{ 3998{
2773 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
2774 return; 4000 return;
2775 4001
2776 if (w->reschedule_cb) 4002 if (w->reschedule_cb)
… …
2795 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
2796 4022
2797 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4023 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2798} 4024}
2799 4025
2800void noinline 4026noinline
4027void
2801ev_periodic_stop (EV_P_ ev_periodic *w) 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2802{ 4029{
2803 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
2805 return; 4032 return;
2806 4033
… …
2823 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
2824 4051
2825 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2826} 4053}
2827 4054
2828void noinline 4055noinline
4056void
2829ev_periodic_again (EV_P_ ev_periodic *w) 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2830{ 4058{
2831 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
2832 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
2833 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
2834} 4062}
… …
2838# define SA_RESTART 0 4066# define SA_RESTART 0
2839#endif 4067#endif
2840 4068
2841#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
2842 4070
2843void noinline 4071noinline
4072void
2844ev_signal_start (EV_P_ ev_signal *w) 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2845{ 4074{
2846 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2847 return; 4076 return;
2848 4077
2849 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4078 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2851#if EV_MULTIPLICITY 4080#if EV_MULTIPLICITY
2852 assert (("libev: a signal must not be attached to two different loops", 4081 assert (("libev: a signal must not be attached to two different loops",
2853 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4082 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2854 4083
2855 signals [w->signum - 1].loop = EV_A; 4084 signals [w->signum - 1].loop = EV_A;
4085 ECB_MEMORY_FENCE_RELEASE;
2856#endif 4086#endif
2857 4087
2858 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2859 4089
2860#if EV_USE_SIGNALFD 4090#if EV_USE_SIGNALFD
… …
2919 } 4149 }
2920 4150
2921 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
2922} 4152}
2923 4153
2924void noinline 4154noinline
4155void
2925ev_signal_stop (EV_P_ ev_signal *w) 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2926{ 4157{
2927 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
2928 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
2929 return; 4160 return;
2930 4161
… …
2961#endif 4192#endif
2962 4193
2963#if EV_CHILD_ENABLE 4194#if EV_CHILD_ENABLE
2964 4195
2965void 4196void
2966ev_child_start (EV_P_ ev_child *w) 4197ev_child_start (EV_P_ ev_child *w) EV_THROW
2967{ 4198{
2968#if EV_MULTIPLICITY 4199#if EV_MULTIPLICITY
2969 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4200 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2970#endif 4201#endif
2971 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
… …
2978 4209
2979 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
2980} 4211}
2981 4212
2982void 4213void
2983ev_child_stop (EV_P_ ev_child *w) 4214ev_child_stop (EV_P_ ev_child *w) EV_THROW
2984{ 4215{
2985 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2986 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
2987 return; 4218 return;
2988 4219
… …
3005 4236
3006#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
3007#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3008#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
3009 4240
3010static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4241noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3011 4242
3012#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
3013 4244
3014/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4245/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3015# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3016 4247
3017static void noinline 4248noinline
4249static void
3018infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
3019{ 4251{
3020 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4252 w->wd = inotify_add_watch (fs_fd, w->path,
4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4255 | IN_DONT_FOLLOW | IN_MASK_ADD);
3021 4256
3022 if (w->wd >= 0) 4257 if (w->wd >= 0)
3023 { 4258 {
3024 struct statfs sfs; 4259 struct statfs sfs;
3025 4260
… …
3029 4264
3030 if (!fs_2625) 4265 if (!fs_2625)
3031 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4266 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3032 else if (!statfs (w->path, &sfs) 4267 else if (!statfs (w->path, &sfs)
3033 && (sfs.f_type == 0x1373 /* devfs */ 4268 && (sfs.f_type == 0x1373 /* devfs */
4269 || sfs.f_type == 0x4006 /* fat */
4270 || sfs.f_type == 0x4d44 /* msdos */
3034 || sfs.f_type == 0xEF53 /* ext2/3 */ 4271 || sfs.f_type == 0xEF53 /* ext2/3 */
4272 || sfs.f_type == 0x72b6 /* jffs2 */
4273 || sfs.f_type == 0x858458f6 /* ramfs */
4274 || sfs.f_type == 0x5346544e /* ntfs */
3035 || sfs.f_type == 0x3153464a /* jfs */ 4275 || sfs.f_type == 0x3153464a /* jfs */
4276 || sfs.f_type == 0x9123683e /* btrfs */
3036 || sfs.f_type == 0x52654973 /* reiser3 */ 4277 || sfs.f_type == 0x52654973 /* reiser3 */
3037 || sfs.f_type == 0x01021994 /* tempfs */ 4278 || sfs.f_type == 0x01021994 /* tmpfs */
3038 || sfs.f_type == 0x58465342 /* xfs */)) 4279 || sfs.f_type == 0x58465342 /* xfs */))
3039 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4280 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3040 else 4281 else
3041 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4282 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3042 } 4283 }
… …
3063 if (!pend || pend == path) 4304 if (!pend || pend == path)
3064 break; 4305 break;
3065 4306
3066 *pend = 0; 4307 *pend = 0;
3067 w->wd = inotify_add_watch (fs_fd, path, mask); 4308 w->wd = inotify_add_watch (fs_fd, path, mask);
3068 } 4309 }
3069 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4310 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3070 } 4311 }
3071 } 4312 }
3072 4313
3073 if (w->wd >= 0) 4314 if (w->wd >= 0)
… …
3077 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3078 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
3079 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3080} 4321}
3081 4322
3082static void noinline 4323noinline
4324static void
3083infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
3084{ 4326{
3085 int slot; 4327 int slot;
3086 int wd = w->wd; 4328 int wd = w->wd;
3087 4329
… …
3094 4336
3095 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
3096 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
3097} 4339}
3098 4340
3099static void noinline 4341noinline
4342static void
3100infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3101{ 4344{
3102 if (slot < 0) 4345 if (slot < 0)
3103 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
3104 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3140 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3141 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
3142 } 4385 }
3143} 4386}
3144 4387
3145inline_size void 4388inline_size ecb_cold
4389void
3146ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
3147{ 4391{
3148 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
3149 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4393 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3150 */ 4394 */
… …
3155} 4399}
3156 4400
3157inline_size int 4401inline_size int
3158infy_newfd (void) 4402infy_newfd (void)
3159{ 4403{
3160#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4404#if defined IN_CLOEXEC && defined IN_NONBLOCK
3161 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4405 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3162 if (fd >= 0) 4406 if (fd >= 0)
3163 return fd; 4407 return fd;
3164#endif 4408#endif
3165 return inotify_init (); 4409 return inotify_init ();
… …
3240#else 4484#else
3241# define EV_LSTAT(p,b) lstat (p, b) 4485# define EV_LSTAT(p,b) lstat (p, b)
3242#endif 4486#endif
3243 4487
3244void 4488void
3245ev_stat_stat (EV_P_ ev_stat *w) 4489ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3246{ 4490{
3247 if (lstat (w->path, &w->attr) < 0) 4491 if (lstat (w->path, &w->attr) < 0)
3248 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
3249 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
3250 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
3251} 4495}
3252 4496
3253static void noinline 4497noinline
4498static void
3254stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3255{ 4500{
3256 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3257 4502
3258 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
3289 ev_feed_event (EV_A_ w, EV_STAT); 4534 ev_feed_event (EV_A_ w, EV_STAT);
3290 } 4535 }
3291} 4536}
3292 4537
3293void 4538void
3294ev_stat_start (EV_P_ ev_stat *w) 4539ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3295{ 4540{
3296 if (expect_false (ev_is_active (w))) 4541 if (expect_false (ev_is_active (w)))
3297 return; 4542 return;
3298 4543
3299 ev_stat_stat (EV_A_ w); 4544 ev_stat_stat (EV_A_ w);
… …
3320 4565
3321 EV_FREQUENT_CHECK; 4566 EV_FREQUENT_CHECK;
3322} 4567}
3323 4568
3324void 4569void
3325ev_stat_stop (EV_P_ ev_stat *w) 4570ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3326{ 4571{
3327 clear_pending (EV_A_ (W)w); 4572 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 4573 if (expect_false (!ev_is_active (w)))
3329 return; 4574 return;
3330 4575
… …
3346} 4591}
3347#endif 4592#endif
3348 4593
3349#if EV_IDLE_ENABLE 4594#if EV_IDLE_ENABLE
3350void 4595void
3351ev_idle_start (EV_P_ ev_idle *w) 4596ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3352{ 4597{
3353 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3354 return; 4599 return;
3355 4600
3356 pri_adjust (EV_A_ (W)w); 4601 pri_adjust (EV_A_ (W)w);
… …
3369 4614
3370 EV_FREQUENT_CHECK; 4615 EV_FREQUENT_CHECK;
3371} 4616}
3372 4617
3373void 4618void
3374ev_idle_stop (EV_P_ ev_idle *w) 4619ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3375{ 4620{
3376 clear_pending (EV_A_ (W)w); 4621 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 4622 if (expect_false (!ev_is_active (w)))
3378 return; 4623 return;
3379 4624
… …
3393} 4638}
3394#endif 4639#endif
3395 4640
3396#if EV_PREPARE_ENABLE 4641#if EV_PREPARE_ENABLE
3397void 4642void
3398ev_prepare_start (EV_P_ ev_prepare *w) 4643ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3399{ 4644{
3400 if (expect_false (ev_is_active (w))) 4645 if (expect_false (ev_is_active (w)))
3401 return; 4646 return;
3402 4647
3403 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
… …
3408 4653
3409 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3410} 4655}
3411 4656
3412void 4657void
3413ev_prepare_stop (EV_P_ ev_prepare *w) 4658ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3414{ 4659{
3415 clear_pending (EV_A_ (W)w); 4660 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4661 if (expect_false (!ev_is_active (w)))
3417 return; 4662 return;
3418 4663
… …
3431} 4676}
3432#endif 4677#endif
3433 4678
3434#if EV_CHECK_ENABLE 4679#if EV_CHECK_ENABLE
3435void 4680void
3436ev_check_start (EV_P_ ev_check *w) 4681ev_check_start (EV_P_ ev_check *w) EV_THROW
3437{ 4682{
3438 if (expect_false (ev_is_active (w))) 4683 if (expect_false (ev_is_active (w)))
3439 return; 4684 return;
3440 4685
3441 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
… …
3446 4691
3447 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
3448} 4693}
3449 4694
3450void 4695void
3451ev_check_stop (EV_P_ ev_check *w) 4696ev_check_stop (EV_P_ ev_check *w) EV_THROW
3452{ 4697{
3453 clear_pending (EV_A_ (W)w); 4698 clear_pending (EV_A_ (W)w);
3454 if (expect_false (!ev_is_active (w))) 4699 if (expect_false (!ev_is_active (w)))
3455 return; 4700 return;
3456 4701
… …
3468 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3469} 4714}
3470#endif 4715#endif
3471 4716
3472#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
3473void noinline 4718noinline
4719void
3474ev_embed_sweep (EV_P_ ev_embed *w) 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3475{ 4721{
3476 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
3477} 4723}
3478 4724
3479static void 4725static void
… …
3527 ev_idle_stop (EV_A_ idle); 4773 ev_idle_stop (EV_A_ idle);
3528} 4774}
3529#endif 4775#endif
3530 4776
3531void 4777void
3532ev_embed_start (EV_P_ ev_embed *w) 4778ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3533{ 4779{
3534 if (expect_false (ev_is_active (w))) 4780 if (expect_false (ev_is_active (w)))
3535 return; 4781 return;
3536 4782
3537 { 4783 {
… …
3558 4804
3559 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
3560} 4806}
3561 4807
3562void 4808void
3563ev_embed_stop (EV_P_ ev_embed *w) 4809ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3564{ 4810{
3565 clear_pending (EV_A_ (W)w); 4811 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4812 if (expect_false (!ev_is_active (w)))
3567 return; 4813 return;
3568 4814
… …
3578} 4824}
3579#endif 4825#endif
3580 4826
3581#if EV_FORK_ENABLE 4827#if EV_FORK_ENABLE
3582void 4828void
3583ev_fork_start (EV_P_ ev_fork *w) 4829ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3584{ 4830{
3585 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
3586 return; 4832 return;
3587 4833
3588 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
… …
3593 4839
3594 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3595} 4841}
3596 4842
3597void 4843void
3598ev_fork_stop (EV_P_ ev_fork *w) 4844ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3599{ 4845{
3600 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
3601 if (expect_false (!ev_is_active (w))) 4847 if (expect_false (!ev_is_active (w)))
3602 return; 4848 return;
3603 4849
… …
3616} 4862}
3617#endif 4863#endif
3618 4864
3619#if EV_CLEANUP_ENABLE 4865#if EV_CLEANUP_ENABLE
3620void 4866void
3621ev_cleanup_start (EV_P_ ev_cleanup *w) 4867ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3622{ 4868{
3623 if (expect_false (ev_is_active (w))) 4869 if (expect_false (ev_is_active (w)))
3624 return; 4870 return;
3625 4871
3626 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
… …
3633 ev_unref (EV_A); 4879 ev_unref (EV_A);
3634 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3635} 4881}
3636 4882
3637void 4883void
3638ev_cleanup_stop (EV_P_ ev_cleanup *w) 4884ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3639{ 4885{
3640 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3641 if (expect_false (!ev_is_active (w))) 4887 if (expect_false (!ev_is_active (w)))
3642 return; 4888 return;
3643 4889
… …
3657} 4903}
3658#endif 4904#endif
3659 4905
3660#if EV_ASYNC_ENABLE 4906#if EV_ASYNC_ENABLE
3661void 4907void
3662ev_async_start (EV_P_ ev_async *w) 4908ev_async_start (EV_P_ ev_async *w) EV_THROW
3663{ 4909{
3664 if (expect_false (ev_is_active (w))) 4910 if (expect_false (ev_is_active (w)))
3665 return; 4911 return;
3666 4912
3667 w->sent = 0; 4913 w->sent = 0;
… …
3676 4922
3677 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3678} 4924}
3679 4925
3680void 4926void
3681ev_async_stop (EV_P_ ev_async *w) 4927ev_async_stop (EV_P_ ev_async *w) EV_THROW
3682{ 4928{
3683 clear_pending (EV_A_ (W)w); 4929 clear_pending (EV_A_ (W)w);
3684 if (expect_false (!ev_is_active (w))) 4930 if (expect_false (!ev_is_active (w)))
3685 return; 4931 return;
3686 4932
… …
3697 4943
3698 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3699} 4945}
3700 4946
3701void 4947void
3702ev_async_send (EV_P_ ev_async *w) 4948ev_async_send (EV_P_ ev_async *w) EV_THROW
3703{ 4949{
3704 w->sent = 1; 4950 w->sent = 1;
3705 evpipe_write (EV_A_ &async_pending); 4951 evpipe_write (EV_A_ &async_pending);
3706} 4952}
3707#endif 4953#endif
… …
3744 4990
3745 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4991 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3746} 4992}
3747 4993
3748void 4994void
3749ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4995ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3750{ 4996{
3751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4997 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3752 4998
3753 if (expect_false (!once)) 4999 if (expect_false (!once))
3754 { 5000 {
… …
3775} 5021}
3776 5022
3777/*****************************************************************************/ 5023/*****************************************************************************/
3778 5024
3779#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
5026ecb_cold
3780void 5027void
3781ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5028ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3782{ 5029{
3783 int i, j; 5030 int i, j;
3784 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
3785 5032
3786 if (types & (EV_IO | EV_EMBED)) 5033 if (types & (EV_IO | EV_EMBED))
… …
3829 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5076 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3830#endif 5077#endif
3831 5078
3832#if EV_IDLE_ENABLE 5079#if EV_IDLE_ENABLE
3833 if (types & EV_IDLE) 5080 if (types & EV_IDLE)
3834 for (j = NUMPRI; i--; ) 5081 for (j = NUMPRI; j--; )
3835 for (i = idlecnt [j]; i--; ) 5082 for (i = idlecnt [j]; i--; )
3836 cb (EV_A_ EV_IDLE, idles [j][i]); 5083 cb (EV_A_ EV_IDLE, idles [j][i]);
3837#endif 5084#endif
3838 5085
3839#if EV_FORK_ENABLE 5086#if EV_FORK_ENABLE
… …
3892 5139
3893#if EV_MULTIPLICITY 5140#if EV_MULTIPLICITY
3894 #include "ev_wrap.h" 5141 #include "ev_wrap.h"
3895#endif 5142#endif
3896 5143
3897EV_CPP(})
3898

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