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

Comparing libev/ev.c (file contents):
Revision 1.369 by root, Sun Jan 23 18:53:06 2011 UTC vs.
Revision 1.480 by root, Thu Feb 18 04:48:05 2016 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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
… …
376# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
378#endif 413#endif
379 414
380#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 418# include <sys/select.h>
383# endif 419# endif
384#endif 420#endif
385 421
386#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
… …
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
393# endif 429# endif
394#endif
395
396#if EV_SELECT_IS_WINSOCKET
397# include <winsock.h>
398#endif 430#endif
399 431
400#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
402# include <stdint.h> 434# include <stdint.h>
… …
442#else 474#else
443# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
444#endif 476#endif
445 477
446/* 478/*
447 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */ 481 */
454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
455 484
456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
458 487
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
461 490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 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;
462#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)
463# define expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
464# define noinline __attribute__ ((noinline))
465#else 841#else
466# define expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
467# define noinline
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
469# define inline
470# endif 843#endif
471#endif
472 844
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. */
473#define expect_false(expr) expect ((expr) != 0, 0) 909#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
474#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
475#define inline_size static inline 1527#define inline_size ecb_inline
476 1528
477#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
478# define inline_speed static inline 1530# define inline_speed ecb_inline
479#else 1531#else
480# define inline_speed static noinline 1532# define inline_speed noinline static
481#endif 1533#endif
482 1534
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484 1536
485#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
522# include "ev_win32.c" 1574# include "ev_win32.c"
523#endif 1575#endif
524 1576
525/*****************************************************************************/ 1577/*****************************************************************************/
526 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
527#ifdef __linux 1628#ifdef __linux
528# include <sys/utsname.h> 1629# include <sys/utsname.h>
529#endif 1630#endif
530 1631
1632noinline ecb_cold
531static unsigned int noinline 1633static unsigned int
532ev_linux_version (void) 1634ev_linux_version (void)
533{ 1635{
534#ifdef __linux 1636#ifdef __linux
535 unsigned int v = 0; 1637 unsigned int v = 0;
536 struct utsname buf; 1638 struct utsname buf;
… …
565} 1667}
566 1668
567/*****************************************************************************/ 1669/*****************************************************************************/
568 1670
569#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
570static void noinline 1672noinline ecb_cold
1673static void
571ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
572{ 1675{
573 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
574} 1677}
575#endif 1678#endif
576 1679
577static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
578 1681
1682ecb_cold
579void 1683void
580ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
581{ 1685{
582 syserr_cb = cb; 1686 syserr_cb = cb;
583} 1687}
584 1688
585static void noinline 1689noinline ecb_cold
1690static void
586ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
587{ 1692{
588 if (!msg) 1693 if (!msg)
589 msg = "(libev) system error"; 1694 msg = "(libev) system error";
590 1695
… …
603 abort (); 1708 abort ();
604 } 1709 }
605} 1710}
606 1711
607static void * 1712static void *
608ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
609{ 1714{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
613 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
614 * 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
615 * 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.
616 */ 1720 */
617 1721
618 if (size) 1722 if (size)
619 return realloc (ptr, size); 1723 return realloc (ptr, size);
620 1724
621 free (ptr); 1725 free (ptr);
622 return 0; 1726 return 0;
623#endif
624} 1727}
625 1728
626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
627 1730
1731ecb_cold
628void 1732void
629ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
630{ 1734{
631 alloc = cb; 1735 alloc = cb;
632} 1736}
633 1737
634inline_speed void * 1738inline_speed void *
… …
722 #undef VAR 1826 #undef VAR
723 }; 1827 };
724 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
725 1829
726 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
727 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 */
728 1832
729#else 1833#else
730 1834
731 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 */
732 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
733 #include "ev_vars.h" 1837 #include "ev_vars.h"
734 #undef VAR 1838 #undef VAR
735 1839
736 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
… …
751 1855
752/*****************************************************************************/ 1856/*****************************************************************************/
753 1857
754#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
755ev_tstamp 1859ev_tstamp
756ev_time (void) 1860ev_time (void) EV_THROW
757{ 1861{
758#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
759 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
760 { 1864 {
761 struct timespec ts; 1865 struct timespec ts;
… …
785 return ev_time (); 1889 return ev_time ();
786} 1890}
787 1891
788#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
789ev_tstamp 1893ev_tstamp
790ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
791{ 1895{
792 return ev_rt_now; 1896 return ev_rt_now;
793} 1897}
794#endif 1898#endif
795 1899
796void 1900void
797ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
798{ 1902{
799 if (delay > 0.) 1903 if (delay > 0.)
800 { 1904 {
801#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
802 struct timespec ts; 1906 struct timespec ts;
803 1907
804 EV_TS_SET (ts, delay); 1908 EV_TS_SET (ts, delay);
805 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
806#elif defined(_WIN32) 1910#elif defined _WIN32
807 Sleep ((unsigned long)(delay * 1e3)); 1911 Sleep ((unsigned long)(delay * 1e3));
808#else 1912#else
809 struct timeval tv; 1913 struct timeval tv;
810 1914
811 /* 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 */
… …
815 select (0, 0, 0, 0, &tv); 1919 select (0, 0, 0, 0, &tv);
816#endif 1920#endif
817 } 1921 }
818} 1922}
819 1923
820inline_speed int
821ev_timeout_to_ms (ev_tstamp timeout)
822{
823 int ms = timeout * 1000. + .999999;
824
825 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
826}
827
828/*****************************************************************************/ 1924/*****************************************************************************/
829 1925
830#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 */
831 1927
832/* find a suitable new size for the given array, */ 1928/* find a suitable new size for the given array, */
… …
838 1934
839 do 1935 do
840 ncur <<= 1; 1936 ncur <<= 1;
841 while (cnt > ncur); 1937 while (cnt > ncur);
842 1938
843 /* 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 */
844 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1940 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
845 { 1941 {
846 ncur *= elem; 1942 ncur *= elem;
847 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);
848 ncur = ncur - sizeof (void *) * 4; 1944 ncur = ncur - sizeof (void *) * 4;
… …
850 } 1946 }
851 1947
852 return ncur; 1948 return ncur;
853} 1949}
854 1950
855static noinline void * 1951noinline ecb_cold
1952static void *
856array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
857{ 1954{
858 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
859 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
860} 1957}
… …
863 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
864 1961
865#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
866 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
867 { \ 1964 { \
868 int ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
869 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
870 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
871 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
872 } 1969 }
873 1970
… …
885 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
886 1983
887/*****************************************************************************/ 1984/*****************************************************************************/
888 1985
889/* dummy callback for pending events */ 1986/* dummy callback for pending events */
890static void noinline 1987noinline
1988static void
891pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
892{ 1990{
893} 1991}
894 1992
895void noinline 1993noinline
1994void
896ev_feed_event (EV_P_ void *w, int revents) 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
897{ 1996{
898 W w_ = (W)w; 1997 W w_ = (W)w;
899 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
900 1999
901 if (expect_false (w_->pending)) 2000 if (expect_false (w_->pending))
… …
905 w_->pending = ++pendingcnt [pri]; 2004 w_->pending = ++pendingcnt [pri];
906 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2005 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
907 pendings [pri][w_->pending - 1].w = w_; 2006 pendings [pri][w_->pending - 1].w = w_;
908 pendings [pri][w_->pending - 1].events = revents; 2007 pendings [pri][w_->pending - 1].events = revents;
909 } 2008 }
2009
2010 pendingpri = NUMPRI - 1;
910} 2011}
911 2012
912inline_speed void 2013inline_speed void
913feed_reverse (EV_P_ W w) 2014feed_reverse (EV_P_ W w)
914{ 2015{
… …
960 if (expect_true (!anfd->reify)) 2061 if (expect_true (!anfd->reify))
961 fd_event_nocheck (EV_A_ fd, revents); 2062 fd_event_nocheck (EV_A_ fd, revents);
962} 2063}
963 2064
964void 2065void
965ev_feed_fd_event (EV_P_ int fd, int revents) 2066ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
966{ 2067{
967 if (fd >= 0 && fd < anfdmax) 2068 if (fd >= 0 && fd < anfdmax)
968 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
969} 2070}
970 2071
… …
973inline_size void 2074inline_size void
974fd_reify (EV_P) 2075fd_reify (EV_P)
975{ 2076{
976 int i; 2077 int i;
977 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
978 for (i = 0; i < fdchangecnt; ++i) 2104 for (i = 0; i < fdchangecnt; ++i)
979 { 2105 {
980 int fd = fdchanges [i]; 2106 int fd = fdchanges [i];
981 ANFD *anfd = anfds + fd; 2107 ANFD *anfd = anfds + fd;
982 ev_io *w; 2108 ev_io *w;
… …
984 unsigned char o_events = anfd->events; 2110 unsigned char o_events = anfd->events;
985 unsigned char o_reify = anfd->reify; 2111 unsigned char o_reify = anfd->reify;
986 2112
987 anfd->reify = 0; 2113 anfd->reify = 0;
988 2114
989#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
990 if (o_reify & EV__IOFDSET)
991 {
992 unsigned long arg;
993 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
994 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
995 printf ("oi %d %x\n", fd, anfd->handle);//D
996 }
997#endif
998
999 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1000 { 2116 {
1001 anfd->events = 0; 2117 anfd->events = 0;
1002 2118
1003 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)
… …
1013 2129
1014 fdchangecnt = 0; 2130 fdchangecnt = 0;
1015} 2131}
1016 2132
1017/* something about the given fd changed */ 2133/* something about the given fd changed */
1018inline_size void 2134inline_size
2135void
1019fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
1020{ 2137{
1021 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
1022 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
1023 2140
… …
1028 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
1029 } 2146 }
1030} 2147}
1031 2148
1032/* 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 */
1033inline_speed void 2150inline_speed ecb_cold void
1034fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
1035{ 2152{
1036 ev_io *w; 2153 ev_io *w;
1037 2154
1038 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
1041 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);
1042 } 2159 }
1043} 2160}
1044 2161
1045/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
1046inline_size int 2163inline_size ecb_cold int
1047fd_valid (int fd) 2164fd_valid (int fd)
1048{ 2165{
1049#ifdef _WIN32 2166#ifdef _WIN32
1050 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1051#else 2168#else
1052 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1053#endif 2170#endif
1054} 2171}
1055 2172
1056/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1057static void noinline 2174noinline ecb_cold
2175static void
1058fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1059{ 2177{
1060 int fd; 2178 int fd;
1061 2179
1062 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1064 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1065 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1066} 2184}
1067 2185
1068/* 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 */
1069static void noinline 2187noinline ecb_cold
2188static void
1070fd_enomem (EV_P) 2189fd_enomem (EV_P)
1071{ 2190{
1072 int fd; 2191 int fd;
1073 2192
1074 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1078 break; 2197 break;
1079 } 2198 }
1080} 2199}
1081 2200
1082/* 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 */
1083static void noinline 2202noinline
2203static void
1084fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1085{ 2205{
1086 int fd; 2206 int fd;
1087 2207
1088 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
1269 2389
1270/*****************************************************************************/ 2390/*****************************************************************************/
1271 2391
1272#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1273 2393
1274static void noinline 2394noinline ecb_cold
2395static void
1275evpipe_init (EV_P) 2396evpipe_init (EV_P)
1276{ 2397{
1277 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
1278 { 2399 {
2400 int fds [2];
2401
1279# if EV_USE_EVENTFD 2402# if EV_USE_EVENTFD
2403 fds [0] = -1;
1280 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2404 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1281 if (evfd < 0 && errno == EINVAL) 2405 if (fds [1] < 0 && errno == EINVAL)
1282 evfd = eventfd (0, 0); 2406 fds [1] = eventfd (0, 0);
1283 2407
1284 if (evfd >= 0) 2408 if (fds [1] < 0)
2409# endif
1285 { 2410 {
2411 while (pipe (fds))
2412 ev_syserr ("(libev) error creating signal/async pipe");
2413
2414 fd_intern (fds [0]);
2415 }
2416
1286 evpipe [0] = -1; 2417 evpipe [0] = fds [0];
1287 fd_intern (evfd); /* doing it twice doesn't hurt */ 2418
1288 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));
1289 } 2469 }
1290 else 2470 else
1291# endif 2471#endif
1292 { 2472 {
1293 while (pipe (evpipe)) 2473#ifdef _WIN32
1294 ev_syserr ("(libev) error creating signal/async pipe"); 2474 WSABUF buf;
1295 2475 DWORD sent;
1296 fd_intern (evpipe [0]); 2476 buf.buf = &buf;
1297 fd_intern (evpipe [1]); 2477 buf.len = 1;
1298 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
1299 } 2482 }
1300
1301 ev_io_start (EV_A_ &pipe_w);
1302 ev_unref (EV_A); /* watcher should not keep loop alive */
1303 }
1304}
1305
1306inline_size void
1307evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1308{
1309 if (!*flag)
1310 {
1311 int old_errno = errno; /* save errno because write might clobber it */
1312 char dummy;
1313
1314 *flag = 1;
1315
1316#if EV_USE_EVENTFD
1317 if (evfd >= 0)
1318 {
1319 uint64_t counter = 1;
1320 write (evfd, &counter, sizeof (uint64_t));
1321 }
1322 else
1323#endif
1324 /* win32 people keep sending patches that change this write() to send() */
1325 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1326 /* so when you think this write should be a send instead, please find out */
1327 /* where your send() is from - it's definitely not the microsoft send, and */
1328 /* tell me. thank you. */
1329 write (evpipe [1], &dummy, 1);
1330 2483
1331 errno = old_errno; 2484 errno = old_errno;
1332 } 2485 }
1333} 2486}
1334 2487
… …
1337static void 2490static void
1338pipecb (EV_P_ ev_io *iow, int revents) 2491pipecb (EV_P_ ev_io *iow, int revents)
1339{ 2492{
1340 int i; 2493 int i;
1341 2494
2495 if (revents & EV_READ)
2496 {
1342#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1343 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1344 { 2499 {
1345 uint64_t counter; 2500 uint64_t counter;
1346 read (evfd, &counter, sizeof (uint64_t)); 2501 read (evpipe [1], &counter, sizeof (uint64_t));
1347 } 2502 }
1348 else 2503 else
1349#endif 2504#endif
1350 { 2505 {
1351 char dummy; 2506 char dummy[4];
1352 /* 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
1353 read (evpipe [0], &dummy, 1); 2515 read (evpipe [0], &dummy, sizeof (dummy));
2516#endif
2517 }
1354 } 2518 }
2519
2520 pipe_write_skipped = 0;
2521
2522 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1355 2523
1356#if EV_SIGNAL_ENABLE 2524#if EV_SIGNAL_ENABLE
1357 if (sig_pending) 2525 if (sig_pending)
1358 { 2526 {
1359 sig_pending = 0; 2527 sig_pending = 0;
2528
2529 ECB_MEMORY_FENCE;
1360 2530
1361 for (i = EV_NSIG - 1; i--; ) 2531 for (i = EV_NSIG - 1; i--; )
1362 if (expect_false (signals [i].pending)) 2532 if (expect_false (signals [i].pending))
1363 ev_feed_signal_event (EV_A_ i + 1); 2533 ev_feed_signal_event (EV_A_ i + 1);
1364 } 2534 }
… …
1366 2536
1367#if EV_ASYNC_ENABLE 2537#if EV_ASYNC_ENABLE
1368 if (async_pending) 2538 if (async_pending)
1369 { 2539 {
1370 async_pending = 0; 2540 async_pending = 0;
2541
2542 ECB_MEMORY_FENCE;
1371 2543
1372 for (i = asynccnt; i--; ) 2544 for (i = asynccnt; i--; )
1373 if (asyncs [i]->sent) 2545 if (asyncs [i]->sent)
1374 { 2546 {
1375 asyncs [i]->sent = 0; 2547 asyncs [i]->sent = 0;
2548 ECB_MEMORY_FENCE_RELEASE;
1376 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2549 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1377 } 2550 }
1378 } 2551 }
1379#endif 2552#endif
1380} 2553}
1381 2554
1382/*****************************************************************************/ 2555/*****************************************************************************/
1383 2556
1384void 2557void
1385ev_feed_signal (int signum) 2558ev_feed_signal (int signum) EV_THROW
1386{ 2559{
1387#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
2561 EV_P;
2562 ECB_MEMORY_FENCE_ACQUIRE;
1388 EV_P = signals [signum - 1].loop; 2563 EV_A = signals [signum - 1].loop;
1389 2564
1390 if (!EV_A) 2565 if (!EV_A)
1391 return; 2566 return;
1392#endif 2567#endif
1393 2568
… …
1403#endif 2578#endif
1404 2579
1405 ev_feed_signal (signum); 2580 ev_feed_signal (signum);
1406} 2581}
1407 2582
1408void noinline 2583noinline
2584void
1409ev_feed_signal_event (EV_P_ int signum) 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
1410{ 2586{
1411 WL w; 2587 WL w;
1412 2588
1413 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1414 return; 2590 return;
1415 2591
1416 --signum; 2592 --signum;
1417 2593
1418#if EV_MULTIPLICITY 2594#if EV_MULTIPLICITY
… …
1422 if (expect_false (signals [signum].loop != EV_A)) 2598 if (expect_false (signals [signum].loop != EV_A))
1423 return; 2599 return;
1424#endif 2600#endif
1425 2601
1426 signals [signum].pending = 0; 2602 signals [signum].pending = 0;
2603 ECB_MEMORY_FENCE_RELEASE;
1427 2604
1428 for (w = signals [signum].head; w; w = w->next) 2605 for (w = signals [signum].head; w; w = w->next)
1429 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1430} 2607}
1431 2608
… …
1529#endif 2706#endif
1530#if EV_USE_SELECT 2707#if EV_USE_SELECT
1531# include "ev_select.c" 2708# include "ev_select.c"
1532#endif 2709#endif
1533 2710
1534int 2711ecb_cold int
1535ev_version_major (void) 2712ev_version_major (void) EV_THROW
1536{ 2713{
1537 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
1538} 2715}
1539 2716
1540int 2717ecb_cold int
1541ev_version_minor (void) 2718ev_version_minor (void) EV_THROW
1542{ 2719{
1543 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
1544} 2721}
1545 2722
1546/* 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 */
1547int inline_size 2724inline_size ecb_cold int
1548enable_secure (void) 2725enable_secure (void)
1549{ 2726{
1550#ifdef _WIN32 2727#ifdef _WIN32
1551 return 0; 2728 return 0;
1552#else 2729#else
1553 return getuid () != geteuid () 2730 return getuid () != geteuid ()
1554 || getgid () != getegid (); 2731 || getgid () != getegid ();
1555#endif 2732#endif
1556} 2733}
1557 2734
2735ecb_cold
1558unsigned int 2736unsigned int
1559ev_supported_backends (void) 2737ev_supported_backends (void) EV_THROW
1560{ 2738{
1561 unsigned int flags = 0; 2739 unsigned int flags = 0;
1562 2740
1563 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1564 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2742 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1567 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1568 2746
1569 return flags; 2747 return flags;
1570} 2748}
1571 2749
2750ecb_cold
1572unsigned int 2751unsigned int
1573ev_recommended_backends (void) 2752ev_recommended_backends (void) EV_THROW
1574{ 2753{
1575 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
1576 2755
1577#ifndef __NetBSD__ 2756#ifndef __NetBSD__
1578 /* kqueue is borked on everything but netbsd apparently */ 2757 /* kqueue is borked on everything but netbsd apparently */
… …
1589#endif 2768#endif
1590 2769
1591 return flags; 2770 return flags;
1592} 2771}
1593 2772
2773ecb_cold
1594unsigned int 2774unsigned int
1595ev_embeddable_backends (void) 2775ev_embeddable_backends (void) EV_THROW
1596{ 2776{
1597 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1598 2778
1599 /* 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 */
1600 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 */
… …
1602 2782
1603 return flags; 2783 return flags;
1604} 2784}
1605 2785
1606unsigned int 2786unsigned int
1607ev_backend (EV_P) 2787ev_backend (EV_P) EV_THROW
1608{ 2788{
1609 return backend; 2789 return backend;
1610} 2790}
1611 2791
1612#if EV_FEATURE_API 2792#if EV_FEATURE_API
1613unsigned int 2793unsigned int
1614ev_iteration (EV_P) 2794ev_iteration (EV_P) EV_THROW
1615{ 2795{
1616 return loop_count; 2796 return loop_count;
1617} 2797}
1618 2798
1619unsigned int 2799unsigned int
1620ev_depth (EV_P) 2800ev_depth (EV_P) EV_THROW
1621{ 2801{
1622 return loop_depth; 2802 return loop_depth;
1623} 2803}
1624 2804
1625void 2805void
1626ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2806ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1627{ 2807{
1628 io_blocktime = interval; 2808 io_blocktime = interval;
1629} 2809}
1630 2810
1631void 2811void
1632ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2812ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1633{ 2813{
1634 timeout_blocktime = interval; 2814 timeout_blocktime = interval;
1635} 2815}
1636 2816
1637void 2817void
1638ev_set_userdata (EV_P_ void *data) 2818ev_set_userdata (EV_P_ void *data) EV_THROW
1639{ 2819{
1640 userdata = data; 2820 userdata = data;
1641} 2821}
1642 2822
1643void * 2823void *
1644ev_userdata (EV_P) 2824ev_userdata (EV_P) EV_THROW
1645{ 2825{
1646 return userdata; 2826 return userdata;
1647} 2827}
1648 2828
2829void
1649void 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
1650{ 2831{
1651 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
1652} 2833}
1653 2834
2835void
1654void 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
1655{ 2837{
1656 release_cb = release; 2838 release_cb = release;
1657 acquire_cb = acquire; 2839 acquire_cb = acquire;
1658} 2840}
1659#endif 2841#endif
1660 2842
1661/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
1662static void noinline 2844noinline ecb_cold
2845static void
1663loop_init (EV_P_ unsigned int flags) 2846loop_init (EV_P_ unsigned int flags) EV_THROW
1664{ 2847{
1665 if (!backend) 2848 if (!backend)
1666 { 2849 {
1667 origflags = flags; 2850 origflags = flags;
1668 2851
… …
1695 if (!(flags & EVFLAG_NOENV) 2878 if (!(flags & EVFLAG_NOENV)
1696 && !enable_secure () 2879 && !enable_secure ()
1697 && getenv ("LIBEV_FLAGS")) 2880 && getenv ("LIBEV_FLAGS"))
1698 flags = atoi (getenv ("LIBEV_FLAGS")); 2881 flags = atoi (getenv ("LIBEV_FLAGS"));
1699 2882
1700 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
1701 mn_now = get_clock (); 2884 mn_now = get_clock ();
1702 now_floor = mn_now; 2885 now_floor = mn_now;
1703 rtmn_diff = ev_rt_now - mn_now; 2886 rtmn_diff = ev_rt_now - mn_now;
1704#if EV_FEATURE_API 2887#if EV_FEATURE_API
1705 invoke_cb = ev_invoke_pending; 2888 invoke_cb = ev_invoke_pending;
1706#endif 2889#endif
1707 2890
1708 io_blocktime = 0.; 2891 io_blocktime = 0.;
1709 timeout_blocktime = 0.; 2892 timeout_blocktime = 0.;
1710 backend = 0; 2893 backend = 0;
1711 backend_fd = -1; 2894 backend_fd = -1;
1712 sig_pending = 0; 2895 sig_pending = 0;
1713#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
1714 async_pending = 0; 2897 async_pending = 0;
1715#endif 2898#endif
2899 pipe_write_skipped = 0;
2900 pipe_write_wanted = 0;
2901 evpipe [0] = -1;
2902 evpipe [1] = -1;
1716#if EV_USE_INOTIFY 2903#if EV_USE_INOTIFY
1717 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2904 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1718#endif 2905#endif
1719#if EV_USE_SIGNALFD 2906#if EV_USE_SIGNALFD
1720 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2907 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1721#endif 2908#endif
1722 2909
1723 if (!(flags & EVBACKEND_MASK)) 2910 if (!(flags & EVBACKEND_MASK))
1724 flags |= ev_recommended_backends (); 2911 flags |= ev_recommended_backends ();
1725 2912
… …
1750#endif 2937#endif
1751 } 2938 }
1752} 2939}
1753 2940
1754/* free up a loop structure */ 2941/* free up a loop structure */
2942ecb_cold
1755void 2943void
1756ev_loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
1757{ 2945{
1758 int i; 2946 int i;
1759 2947
… …
1771 EV_INVOKE_PENDING; 2959 EV_INVOKE_PENDING;
1772 } 2960 }
1773#endif 2961#endif
1774 2962
1775#if EV_CHILD_ENABLE 2963#if EV_CHILD_ENABLE
1776 if (ev_is_active (&childev)) 2964 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1777 { 2965 {
1778 ev_ref (EV_A); /* child watcher */ 2966 ev_ref (EV_A); /* child watcher */
1779 ev_signal_stop (EV_A_ &childev); 2967 ev_signal_stop (EV_A_ &childev);
1780 } 2968 }
1781#endif 2969#endif
… …
1783 if (ev_is_active (&pipe_w)) 2971 if (ev_is_active (&pipe_w))
1784 { 2972 {
1785 /*ev_ref (EV_A);*/ 2973 /*ev_ref (EV_A);*/
1786 /*ev_io_stop (EV_A_ &pipe_w);*/ 2974 /*ev_io_stop (EV_A_ &pipe_w);*/
1787 2975
1788#if EV_USE_EVENTFD
1789 if (evfd >= 0)
1790 close (evfd);
1791#endif
1792
1793 if (evpipe [0] >= 0)
1794 {
1795 EV_WIN32_CLOSE_FD (evpipe [0]); 2976 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1796 EV_WIN32_CLOSE_FD (evpipe [1]); 2977 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1797 }
1798 } 2978 }
1799 2979
1800#if EV_USE_SIGNALFD 2980#if EV_USE_SIGNALFD
1801 if (ev_is_active (&sigfd_w)) 2981 if (ev_is_active (&sigfd_w))
1802 close (sigfd); 2982 close (sigfd);
… …
1888#endif 3068#endif
1889#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
1890 infy_fork (EV_A); 3070 infy_fork (EV_A);
1891#endif 3071#endif
1892 3072
3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1893 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
1894 { 3075 {
1895 /* this "locks" the handlers against writing to the pipe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1896 /* while we modify the fd vars */
1897 sig_pending = 1;
1898#if EV_ASYNC_ENABLE
1899 async_pending = 1;
1900#endif
1901 3077
1902 ev_ref (EV_A); 3078 ev_ref (EV_A);
1903 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
1904 3080
1905#if EV_USE_EVENTFD
1906 if (evfd >= 0)
1907 close (evfd);
1908#endif
1909
1910 if (evpipe [0] >= 0) 3081 if (evpipe [0] >= 0)
1911 {
1912 EV_WIN32_CLOSE_FD (evpipe [0]); 3082 EV_WIN32_CLOSE_FD (evpipe [0]);
1913 EV_WIN32_CLOSE_FD (evpipe [1]);
1914 }
1915 3083
1916#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1917 evpipe_init (EV_A); 3084 evpipe_init (EV_A);
1918 /* now iterate over everything, in case we missed something */ 3085 /* iterate over everything, in case we missed something before */
1919 pipecb (EV_A_ &pipe_w, EV_READ); 3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1920#endif
1921 } 3087 }
3088#endif
1922 3089
1923 postfork = 0; 3090 postfork = 0;
1924} 3091}
1925 3092
1926#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
1927 3094
3095ecb_cold
1928struct ev_loop * 3096struct ev_loop *
1929ev_loop_new (unsigned int flags) 3097ev_loop_new (unsigned int flags) EV_THROW
1930{ 3098{
1931 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1932 3100
1933 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
1934 loop_init (EV_A_ flags); 3102 loop_init (EV_A_ flags);
… …
1941} 3109}
1942 3110
1943#endif /* multiplicity */ 3111#endif /* multiplicity */
1944 3112
1945#if EV_VERIFY 3113#if EV_VERIFY
1946static void noinline 3114noinline ecb_cold
3115static void
1947verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
1948{ 3117{
1949 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));
1950 3119
1951 if (w->pending) 3120 if (w->pending)
1952 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));
1953} 3122}
1954 3123
1955static void noinline 3124noinline ecb_cold
3125static void
1956verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
1957{ 3127{
1958 int i; 3128 int i;
1959 3129
1960 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1965 3135
1966 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1967 } 3137 }
1968} 3138}
1969 3139
1970static void noinline 3140noinline ecb_cold
3141static void
1971array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
1972{ 3143{
1973 while (cnt--) 3144 while (cnt--)
1974 { 3145 {
1975 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1977 } 3148 }
1978} 3149}
1979#endif 3150#endif
1980 3151
1981#if EV_FEATURE_API 3152#if EV_FEATURE_API
1982void 3153void ecb_cold
1983ev_verify (EV_P) 3154ev_verify (EV_P) EV_THROW
1984{ 3155{
1985#if EV_VERIFY 3156#if EV_VERIFY
1986 int i; 3157 int i;
1987 WL w; 3158 WL w, w2;
1988 3159
1989 assert (activecnt >= -1); 3160 assert (activecnt >= -1);
1990 3161
1991 assert (fdchangemax >= fdchangecnt); 3162 assert (fdchangemax >= fdchangecnt);
1992 for (i = 0; i < fdchangecnt; ++i) 3163 for (i = 0; i < fdchangecnt; ++i)
1993 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3164 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1994 3165
1995 assert (anfdmax >= 0); 3166 assert (anfdmax >= 0);
1996 for (i = 0; i < anfdmax; ++i) 3167 for (i = 0; i < anfdmax; ++i)
3168 {
3169 int j = 0;
3170
1997 for (w = anfds [i].head; w; w = w->next) 3171 for (w = w2 = anfds [i].head; w; w = w->next)
1998 { 3172 {
1999 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
2000 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));
2001 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));
2002 } 3183 }
3184 }
2003 3185
2004 assert (timermax >= timercnt); 3186 assert (timermax >= timercnt);
2005 verify_heap (EV_A_ timers, timercnt); 3187 verify_heap (EV_A_ timers, timercnt);
2006 3188
2007#if EV_PERIODIC_ENABLE 3189#if EV_PERIODIC_ENABLE
… …
2053#endif 3235#endif
2054} 3236}
2055#endif 3237#endif
2056 3238
2057#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
2058struct ev_loop * 3241struct ev_loop *
2059#else 3242#else
2060int 3243int
2061#endif 3244#endif
2062ev_default_loop (unsigned int flags) 3245ev_default_loop (unsigned int flags) EV_THROW
2063{ 3246{
2064 if (!ev_default_loop_ptr) 3247 if (!ev_default_loop_ptr)
2065 { 3248 {
2066#if EV_MULTIPLICITY 3249#if EV_MULTIPLICITY
2067 EV_P = ev_default_loop_ptr = &default_loop_struct; 3250 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2086 3269
2087 return ev_default_loop_ptr; 3270 return ev_default_loop_ptr;
2088} 3271}
2089 3272
2090void 3273void
2091ev_loop_fork (EV_P) 3274ev_loop_fork (EV_P) EV_THROW
2092{ 3275{
2093 postfork = 1; /* must be in line with ev_default_fork */ 3276 postfork = 1;
2094} 3277}
2095 3278
2096/*****************************************************************************/ 3279/*****************************************************************************/
2097 3280
2098void 3281void
… …
2100{ 3283{
2101 EV_CB_INVOKE ((W)w, revents); 3284 EV_CB_INVOKE ((W)w, revents);
2102} 3285}
2103 3286
2104unsigned int 3287unsigned int
2105ev_pending_count (EV_P) 3288ev_pending_count (EV_P) EV_THROW
2106{ 3289{
2107 int pri; 3290 int pri;
2108 unsigned int count = 0; 3291 unsigned int count = 0;
2109 3292
2110 for (pri = NUMPRI; pri--; ) 3293 for (pri = NUMPRI; pri--; )
2111 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
2112 3295
2113 return count; 3296 return count;
2114} 3297}
2115 3298
2116void noinline 3299noinline
3300void
2117ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
2118{ 3302{
2119 int pri; 3303 pendingpri = NUMPRI;
2120 3304
2121 for (pri = NUMPRI; pri--; ) 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3306 {
3307 --pendingpri;
3308
2122 while (pendingcnt [pri]) 3309 while (pendingcnt [pendingpri])
2123 { 3310 {
2124 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3311 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2125 3312
2126 p->w->pending = 0; 3313 p->w->pending = 0;
2127 EV_CB_INVOKE (p->w, p->events); 3314 EV_CB_INVOKE (p->w, p->events);
2128 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2129 } 3316 }
3317 }
2130} 3318}
2131 3319
2132#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2133/* make idle watchers pending. this handles the "call-idle */ 3321/* make idle watchers pending. this handles the "call-idle */
2134/* only when higher priorities are idle" logic */ 3322/* only when higher priorities are idle" logic */
… …
2191 feed_reverse_done (EV_A_ EV_TIMER); 3379 feed_reverse_done (EV_A_ EV_TIMER);
2192 } 3380 }
2193} 3381}
2194 3382
2195#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
3384
3385noinline
3386static void
3387periodic_recalc (EV_P_ ev_periodic *w)
3388{
3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3391
3392 /* the above almost always errs on the low side */
3393 while (at <= ev_rt_now)
3394 {
3395 ev_tstamp nat = at + w->interval;
3396
3397 /* when resolution fails us, we use ev_rt_now */
3398 if (expect_false (nat == at))
3399 {
3400 at = ev_rt_now;
3401 break;
3402 }
3403
3404 at = nat;
3405 }
3406
3407 ev_at (w) = at;
3408}
3409
2196/* make periodics pending */ 3410/* make periodics pending */
2197inline_size void 3411inline_size void
2198periodics_reify (EV_P) 3412periodics_reify (EV_P)
2199{ 3413{
2200 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
2201 3415
2202 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3416 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2203 { 3417 {
2204 int feed_count = 0;
2205
2206 do 3418 do
2207 { 3419 {
2208 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3420 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2209 3421
2210 /*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)));*/
… …
2219 ANHE_at_cache (periodics [HEAP0]); 3431 ANHE_at_cache (periodics [HEAP0]);
2220 downheap (periodics, periodiccnt, HEAP0); 3432 downheap (periodics, periodiccnt, HEAP0);
2221 } 3433 }
2222 else if (w->interval) 3434 else if (w->interval)
2223 { 3435 {
2224 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3436 periodic_recalc (EV_A_ w);
2225 /* if next trigger time is not sufficiently in the future, put it there */
2226 /* this might happen because of floating point inexactness */
2227 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2228 {
2229 ev_at (w) += w->interval;
2230
2231 /* if interval is unreasonably low we might still have a time in the past */
2232 /* so correct this. this will make the periodic very inexact, but the user */
2233 /* has effectively asked to get triggered more often than possible */
2234 if (ev_at (w) < ev_rt_now)
2235 ev_at (w) = ev_rt_now;
2236 }
2237
2238 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
2239 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2240 } 3439 }
2241 else 3440 else
2242 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3441 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2250 } 3449 }
2251} 3450}
2252 3451
2253/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
2254/* 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? */
2255static void noinline 3454noinline ecb_cold
3455static void
2256periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
2257{ 3457{
2258 int i; 3458 int i;
2259 3459
2260 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
2263 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3463 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2264 3464
2265 if (w->reschedule_cb) 3465 if (w->reschedule_cb)
2266 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3466 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2267 else if (w->interval) 3467 else if (w->interval)
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3468 periodic_recalc (EV_A_ w);
2269 3469
2270 ANHE_at_cache (periodics [i]); 3470 ANHE_at_cache (periodics [i]);
2271 } 3471 }
2272 3472
2273 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
2274} 3474}
2275#endif 3475#endif
2276 3476
2277/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
2278static void noinline 3478noinline ecb_cold
3479static void
2279timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
2280{ 3481{
2281 int i; 3482 int i;
2282 3483
2283 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
2320 * 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
2321 * in the unlikely event of having been preempted here. 3522 * in the unlikely event of having been preempted here.
2322 */ 3523 */
2323 for (i = 4; --i; ) 3524 for (i = 4; --i; )
2324 { 3525 {
3526 ev_tstamp diff;
2325 rtmn_diff = ev_rt_now - mn_now; 3527 rtmn_diff = ev_rt_now - mn_now;
2326 3528
3529 diff = odiff - rtmn_diff;
3530
2327 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3531 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2328 return; /* all is well */ 3532 return; /* all is well */
2329 3533
2330 ev_rt_now = ev_time (); 3534 ev_rt_now = ev_time ();
2331 mn_now = get_clock (); 3535 mn_now = get_clock ();
2332 now_floor = mn_now; 3536 now_floor = mn_now;
… …
2354 3558
2355 mn_now = ev_rt_now; 3559 mn_now = ev_rt_now;
2356 } 3560 }
2357} 3561}
2358 3562
2359void 3563int
2360ev_run (EV_P_ int flags) 3564ev_run (EV_P_ int flags)
2361{ 3565{
2362#if EV_FEATURE_API 3566#if EV_FEATURE_API
2363 ++loop_depth; 3567 ++loop_depth;
2364#endif 3568#endif
… …
2422 ev_tstamp prev_mn_now = mn_now; 3626 ev_tstamp prev_mn_now = mn_now;
2423 3627
2424 /* update time to cancel out callback processing overhead */ 3628 /* update time to cancel out callback processing overhead */
2425 time_update (EV_A_ 1e100); 3629 time_update (EV_A_ 1e100);
2426 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
2427 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3636 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2428 { 3637 {
2429 waittime = MAX_BLOCKTIME; 3638 waittime = MAX_BLOCKTIME;
2430 3639
2431 if (timercnt) 3640 if (timercnt)
2432 { 3641 {
2433 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3642 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2434 if (waittime > to) waittime = to; 3643 if (waittime > to) waittime = to;
2435 } 3644 }
2436 3645
2437#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2438 if (periodiccnt) 3647 if (periodiccnt)
2439 { 3648 {
2440 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3649 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2441 if (waittime > to) waittime = to; 3650 if (waittime > to) waittime = to;
2442 } 3651 }
2443#endif 3652#endif
2444 3653
2445 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3654 /* don't let timeouts decrease the waittime below timeout_blocktime */
2446 if (expect_false (waittime < timeout_blocktime)) 3655 if (expect_false (waittime < timeout_blocktime))
2447 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;
2448 3662
2449 /* extra check because io_blocktime is commonly 0 */ 3663 /* extra check because io_blocktime is commonly 0 */
2450 if (expect_false (io_blocktime)) 3664 if (expect_false (io_blocktime))
2451 { 3665 {
2452 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3666 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2453 3667
2454 if (sleeptime > waittime - backend_fudge) 3668 if (sleeptime > waittime - backend_mintime)
2455 sleeptime = waittime - backend_fudge; 3669 sleeptime = waittime - backend_mintime;
2456 3670
2457 if (expect_true (sleeptime > 0.)) 3671 if (expect_true (sleeptime > 0.))
2458 { 3672 {
2459 ev_sleep (sleeptime); 3673 ev_sleep (sleeptime);
2460 waittime -= sleeptime; 3674 waittime -= sleeptime;
… …
2467#endif 3681#endif
2468 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3682 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2469 backend_poll (EV_A_ waittime); 3683 backend_poll (EV_A_ waittime);
2470 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2471 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
2472 /* update ev_rt_now, do magic */ 3696 /* update ev_rt_now, do magic */
2473 time_update (EV_A_ waittime + sleeptime); 3697 time_update (EV_A_ waittime + sleeptime);
2474 } 3698 }
2475 3699
2476 /* queue pending timers and reschedule them */ 3700 /* queue pending timers and reschedule them */
… …
2502 loop_done = EVBREAK_CANCEL; 3726 loop_done = EVBREAK_CANCEL;
2503 3727
2504#if EV_FEATURE_API 3728#if EV_FEATURE_API
2505 --loop_depth; 3729 --loop_depth;
2506#endif 3730#endif
2507}
2508 3731
3732 return activecnt;
3733}
3734
2509void 3735void
2510ev_break (EV_P_ int how) 3736ev_break (EV_P_ int how) EV_THROW
2511{ 3737{
2512 loop_done = how; 3738 loop_done = how;
2513} 3739}
2514 3740
2515void 3741void
2516ev_ref (EV_P) 3742ev_ref (EV_P) EV_THROW
2517{ 3743{
2518 ++activecnt; 3744 ++activecnt;
2519} 3745}
2520 3746
2521void 3747void
2522ev_unref (EV_P) 3748ev_unref (EV_P) EV_THROW
2523{ 3749{
2524 --activecnt; 3750 --activecnt;
2525} 3751}
2526 3752
2527void 3753void
2528ev_now_update (EV_P) 3754ev_now_update (EV_P) EV_THROW
2529{ 3755{
2530 time_update (EV_A_ 1e100); 3756 time_update (EV_A_ 1e100);
2531} 3757}
2532 3758
2533void 3759void
2534ev_suspend (EV_P) 3760ev_suspend (EV_P) EV_THROW
2535{ 3761{
2536 ev_now_update (EV_A); 3762 ev_now_update (EV_A);
2537} 3763}
2538 3764
2539void 3765void
2540ev_resume (EV_P) 3766ev_resume (EV_P) EV_THROW
2541{ 3767{
2542 ev_tstamp mn_prev = mn_now; 3768 ev_tstamp mn_prev = mn_now;
2543 3769
2544 ev_now_update (EV_A); 3770 ev_now_update (EV_A);
2545 timers_reschedule (EV_A_ mn_now - mn_prev); 3771 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2584 w->pending = 0; 3810 w->pending = 0;
2585 } 3811 }
2586} 3812}
2587 3813
2588int 3814int
2589ev_clear_pending (EV_P_ void *w) 3815ev_clear_pending (EV_P_ void *w) EV_THROW
2590{ 3816{
2591 W w_ = (W)w; 3817 W w_ = (W)w;
2592 int pending = w_->pending; 3818 int pending = w_->pending;
2593 3819
2594 if (expect_true (pending)) 3820 if (expect_true (pending))
… …
2626 w->active = 0; 3852 w->active = 0;
2627} 3853}
2628 3854
2629/*****************************************************************************/ 3855/*****************************************************************************/
2630 3856
2631void noinline 3857noinline
3858void
2632ev_io_start (EV_P_ ev_io *w) 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
2633{ 3860{
2634 int fd = w->fd; 3861 int fd = w->fd;
2635 3862
2636 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
2637 return; 3864 return;
… …
2643 3870
2644 ev_start (EV_A_ (W)w, 1); 3871 ev_start (EV_A_ (W)w, 1);
2645 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3872 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2646 wlist_add (&anfds[fd].head, (WL)w); 3873 wlist_add (&anfds[fd].head, (WL)w);
2647 3874
3875 /* common bug, apparently */
3876 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3877
2648 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);
2649 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
2650 3880
2651 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
2652} 3882}
2653 3883
2654void noinline 3884noinline
3885void
2655ev_io_stop (EV_P_ ev_io *w) 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
2656{ 3887{
2657 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
2659 return; 3890 return;
2660 3891
… …
2668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2669 3900
2670 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2671} 3902}
2672 3903
2673void noinline 3904noinline
3905void
2674ev_timer_start (EV_P_ ev_timer *w) 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2675{ 3907{
2676 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
2677 return; 3909 return;
2678 3910
2679 ev_at (w) += mn_now; 3911 ev_at (w) += mn_now;
… …
2692 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2693 3925
2694 /*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));*/
2695} 3927}
2696 3928
2697void noinline 3929noinline
3930void
2698ev_timer_stop (EV_P_ ev_timer *w) 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2699{ 3932{
2700 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
2701 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
2702 return; 3935 return;
2703 3936
… …
2722 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
2723 3956
2724 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
2725} 3958}
2726 3959
2727void noinline 3960noinline
3961void
2728ev_timer_again (EV_P_ ev_timer *w) 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2729{ 3963{
2730 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3965
3966 clear_pending (EV_A_ (W)w);
2731 3967
2732 if (ev_is_active (w)) 3968 if (ev_is_active (w))
2733 { 3969 {
2734 if (w->repeat) 3970 if (w->repeat)
2735 { 3971 {
… …
2748 3984
2749 EV_FREQUENT_CHECK; 3985 EV_FREQUENT_CHECK;
2750} 3986}
2751 3987
2752ev_tstamp 3988ev_tstamp
2753ev_timer_remaining (EV_P_ ev_timer *w) 3989ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2754{ 3990{
2755 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2756} 3992}
2757 3993
2758#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
2759void noinline 3995noinline
3996void
2760ev_periodic_start (EV_P_ ev_periodic *w) 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2761{ 3998{
2762 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
2763 return; 4000 return;
2764 4001
2765 if (w->reschedule_cb) 4002 if (w->reschedule_cb)
2766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4003 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2767 else if (w->interval) 4004 else if (w->interval)
2768 { 4005 {
2769 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4006 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2770 /* this formula differs from the one in periodic_reify because we do not always round up */ 4007 periodic_recalc (EV_A_ w);
2771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2772 } 4008 }
2773 else 4009 else
2774 ev_at (w) = w->offset; 4010 ev_at (w) = w->offset;
2775 4011
2776 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
… …
2785 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
2786 4022
2787 /*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));*/
2788} 4024}
2789 4025
2790void noinline 4026noinline
4027void
2791ev_periodic_stop (EV_P_ ev_periodic *w) 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2792{ 4029{
2793 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
2794 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
2795 return; 4032 return;
2796 4033
… …
2813 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
2814 4051
2815 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2816} 4053}
2817 4054
2818void noinline 4055noinline
4056void
2819ev_periodic_again (EV_P_ ev_periodic *w) 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2820{ 4058{
2821 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
2822 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
2823 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
2824} 4062}
… …
2828# define SA_RESTART 0 4066# define SA_RESTART 0
2829#endif 4067#endif
2830 4068
2831#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
2832 4070
2833void noinline 4071noinline
4072void
2834ev_signal_start (EV_P_ ev_signal *w) 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2835{ 4074{
2836 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2837 return; 4076 return;
2838 4077
2839 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));
… …
2841#if EV_MULTIPLICITY 4080#if EV_MULTIPLICITY
2842 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",
2843 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4082 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2844 4083
2845 signals [w->signum - 1].loop = EV_A; 4084 signals [w->signum - 1].loop = EV_A;
4085 ECB_MEMORY_FENCE_RELEASE;
2846#endif 4086#endif
2847 4087
2848 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2849 4089
2850#if EV_USE_SIGNALFD 4090#if EV_USE_SIGNALFD
… …
2909 } 4149 }
2910 4150
2911 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
2912} 4152}
2913 4153
2914void noinline 4154noinline
4155void
2915ev_signal_stop (EV_P_ ev_signal *w) 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2916{ 4157{
2917 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
2918 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
2919 return; 4160 return;
2920 4161
… …
2951#endif 4192#endif
2952 4193
2953#if EV_CHILD_ENABLE 4194#if EV_CHILD_ENABLE
2954 4195
2955void 4196void
2956ev_child_start (EV_P_ ev_child *w) 4197ev_child_start (EV_P_ ev_child *w) EV_THROW
2957{ 4198{
2958#if EV_MULTIPLICITY 4199#if EV_MULTIPLICITY
2959 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));
2960#endif 4201#endif
2961 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
… …
2968 4209
2969 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
2970} 4211}
2971 4212
2972void 4213void
2973ev_child_stop (EV_P_ ev_child *w) 4214ev_child_stop (EV_P_ ev_child *w) EV_THROW
2974{ 4215{
2975 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2976 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
2977 return; 4218 return;
2978 4219
… …
2995 4236
2996#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
2997#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2998#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
2999 4240
3000static 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);
3001 4242
3002#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
3003 4244
3004/* 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 */
3005# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3006 4247
3007static void noinline 4248noinline
4249static void
3008infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
3009{ 4251{
3010 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);
3011 4256
3012 if (w->wd >= 0) 4257 if (w->wd >= 0)
3013 { 4258 {
3014 struct statfs sfs; 4259 struct statfs sfs;
3015 4260
… …
3019 4264
3020 if (!fs_2625) 4265 if (!fs_2625)
3021 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4266 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3022 else if (!statfs (w->path, &sfs) 4267 else if (!statfs (w->path, &sfs)
3023 && (sfs.f_type == 0x1373 /* devfs */ 4268 && (sfs.f_type == 0x1373 /* devfs */
4269 || sfs.f_type == 0x4006 /* fat */
4270 || sfs.f_type == 0x4d44 /* msdos */
3024 || 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 */
3025 || sfs.f_type == 0x3153464a /* jfs */ 4275 || sfs.f_type == 0x3153464a /* jfs */
4276 || sfs.f_type == 0x9123683e /* btrfs */
3026 || sfs.f_type == 0x52654973 /* reiser3 */ 4277 || sfs.f_type == 0x52654973 /* reiser3 */
3027 || sfs.f_type == 0x01021994 /* tempfs */ 4278 || sfs.f_type == 0x01021994 /* tmpfs */
3028 || sfs.f_type == 0x58465342 /* xfs */)) 4279 || sfs.f_type == 0x58465342 /* xfs */))
3029 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4280 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3030 else 4281 else
3031 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 */
3032 } 4283 }
… …
3053 if (!pend || pend == path) 4304 if (!pend || pend == path)
3054 break; 4305 break;
3055 4306
3056 *pend = 0; 4307 *pend = 0;
3057 w->wd = inotify_add_watch (fs_fd, path, mask); 4308 w->wd = inotify_add_watch (fs_fd, path, mask);
3058 } 4309 }
3059 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4310 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3060 } 4311 }
3061 } 4312 }
3062 4313
3063 if (w->wd >= 0) 4314 if (w->wd >= 0)
… …
3067 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3068 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
3069 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3070} 4321}
3071 4322
3072static void noinline 4323noinline
4324static void
3073infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
3074{ 4326{
3075 int slot; 4327 int slot;
3076 int wd = w->wd; 4328 int wd = w->wd;
3077 4329
… …
3084 4336
3085 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
3086 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
3087} 4339}
3088 4340
3089static void noinline 4341noinline
4342static void
3090infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3091{ 4344{
3092 if (slot < 0) 4345 if (slot < 0)
3093 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
3094 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3130 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3131 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
3132 } 4385 }
3133} 4386}
3134 4387
3135inline_size void 4388inline_size ecb_cold
4389void
3136ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
3137{ 4391{
3138 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
3139 * 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
3140 */ 4394 */
… …
3145} 4399}
3146 4400
3147inline_size int 4401inline_size int
3148infy_newfd (void) 4402infy_newfd (void)
3149{ 4403{
3150#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4404#if defined IN_CLOEXEC && defined IN_NONBLOCK
3151 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4405 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3152 if (fd >= 0) 4406 if (fd >= 0)
3153 return fd; 4407 return fd;
3154#endif 4408#endif
3155 return inotify_init (); 4409 return inotify_init ();
… …
3230#else 4484#else
3231# define EV_LSTAT(p,b) lstat (p, b) 4485# define EV_LSTAT(p,b) lstat (p, b)
3232#endif 4486#endif
3233 4487
3234void 4488void
3235ev_stat_stat (EV_P_ ev_stat *w) 4489ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3236{ 4490{
3237 if (lstat (w->path, &w->attr) < 0) 4491 if (lstat (w->path, &w->attr) < 0)
3238 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
3239 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
3240 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
3241} 4495}
3242 4496
3243static void noinline 4497noinline
4498static void
3244stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3245{ 4500{
3246 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3247 4502
3248 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
3279 ev_feed_event (EV_A_ w, EV_STAT); 4534 ev_feed_event (EV_A_ w, EV_STAT);
3280 } 4535 }
3281} 4536}
3282 4537
3283void 4538void
3284ev_stat_start (EV_P_ ev_stat *w) 4539ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3285{ 4540{
3286 if (expect_false (ev_is_active (w))) 4541 if (expect_false (ev_is_active (w)))
3287 return; 4542 return;
3288 4543
3289 ev_stat_stat (EV_A_ w); 4544 ev_stat_stat (EV_A_ w);
… …
3310 4565
3311 EV_FREQUENT_CHECK; 4566 EV_FREQUENT_CHECK;
3312} 4567}
3313 4568
3314void 4569void
3315ev_stat_stop (EV_P_ ev_stat *w) 4570ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3316{ 4571{
3317 clear_pending (EV_A_ (W)w); 4572 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 4573 if (expect_false (!ev_is_active (w)))
3319 return; 4574 return;
3320 4575
… …
3336} 4591}
3337#endif 4592#endif
3338 4593
3339#if EV_IDLE_ENABLE 4594#if EV_IDLE_ENABLE
3340void 4595void
3341ev_idle_start (EV_P_ ev_idle *w) 4596ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3342{ 4597{
3343 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3344 return; 4599 return;
3345 4600
3346 pri_adjust (EV_A_ (W)w); 4601 pri_adjust (EV_A_ (W)w);
… …
3359 4614
3360 EV_FREQUENT_CHECK; 4615 EV_FREQUENT_CHECK;
3361} 4616}
3362 4617
3363void 4618void
3364ev_idle_stop (EV_P_ ev_idle *w) 4619ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3365{ 4620{
3366 clear_pending (EV_A_ (W)w); 4621 clear_pending (EV_A_ (W)w);
3367 if (expect_false (!ev_is_active (w))) 4622 if (expect_false (!ev_is_active (w)))
3368 return; 4623 return;
3369 4624
… …
3383} 4638}
3384#endif 4639#endif
3385 4640
3386#if EV_PREPARE_ENABLE 4641#if EV_PREPARE_ENABLE
3387void 4642void
3388ev_prepare_start (EV_P_ ev_prepare *w) 4643ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3389{ 4644{
3390 if (expect_false (ev_is_active (w))) 4645 if (expect_false (ev_is_active (w)))
3391 return; 4646 return;
3392 4647
3393 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
… …
3398 4653
3399 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3400} 4655}
3401 4656
3402void 4657void
3403ev_prepare_stop (EV_P_ ev_prepare *w) 4658ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3404{ 4659{
3405 clear_pending (EV_A_ (W)w); 4660 clear_pending (EV_A_ (W)w);
3406 if (expect_false (!ev_is_active (w))) 4661 if (expect_false (!ev_is_active (w)))
3407 return; 4662 return;
3408 4663
… …
3421} 4676}
3422#endif 4677#endif
3423 4678
3424#if EV_CHECK_ENABLE 4679#if EV_CHECK_ENABLE
3425void 4680void
3426ev_check_start (EV_P_ ev_check *w) 4681ev_check_start (EV_P_ ev_check *w) EV_THROW
3427{ 4682{
3428 if (expect_false (ev_is_active (w))) 4683 if (expect_false (ev_is_active (w)))
3429 return; 4684 return;
3430 4685
3431 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
… …
3436 4691
3437 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
3438} 4693}
3439 4694
3440void 4695void
3441ev_check_stop (EV_P_ ev_check *w) 4696ev_check_stop (EV_P_ ev_check *w) EV_THROW
3442{ 4697{
3443 clear_pending (EV_A_ (W)w); 4698 clear_pending (EV_A_ (W)w);
3444 if (expect_false (!ev_is_active (w))) 4699 if (expect_false (!ev_is_active (w)))
3445 return; 4700 return;
3446 4701
… …
3458 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3459} 4714}
3460#endif 4715#endif
3461 4716
3462#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
3463void noinline 4718noinline
4719void
3464ev_embed_sweep (EV_P_ ev_embed *w) 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3465{ 4721{
3466 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
3467} 4723}
3468 4724
3469static void 4725static void
… …
3517 ev_idle_stop (EV_A_ idle); 4773 ev_idle_stop (EV_A_ idle);
3518} 4774}
3519#endif 4775#endif
3520 4776
3521void 4777void
3522ev_embed_start (EV_P_ ev_embed *w) 4778ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3523{ 4779{
3524 if (expect_false (ev_is_active (w))) 4780 if (expect_false (ev_is_active (w)))
3525 return; 4781 return;
3526 4782
3527 { 4783 {
… …
3548 4804
3549 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
3550} 4806}
3551 4807
3552void 4808void
3553ev_embed_stop (EV_P_ ev_embed *w) 4809ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3554{ 4810{
3555 clear_pending (EV_A_ (W)w); 4811 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4812 if (expect_false (!ev_is_active (w)))
3557 return; 4813 return;
3558 4814
… …
3568} 4824}
3569#endif 4825#endif
3570 4826
3571#if EV_FORK_ENABLE 4827#if EV_FORK_ENABLE
3572void 4828void
3573ev_fork_start (EV_P_ ev_fork *w) 4829ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3574{ 4830{
3575 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
3576 return; 4832 return;
3577 4833
3578 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
… …
3583 4839
3584 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3585} 4841}
3586 4842
3587void 4843void
3588ev_fork_stop (EV_P_ ev_fork *w) 4844ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3589{ 4845{
3590 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
3591 if (expect_false (!ev_is_active (w))) 4847 if (expect_false (!ev_is_active (w)))
3592 return; 4848 return;
3593 4849
… …
3606} 4862}
3607#endif 4863#endif
3608 4864
3609#if EV_CLEANUP_ENABLE 4865#if EV_CLEANUP_ENABLE
3610void 4866void
3611ev_cleanup_start (EV_P_ ev_cleanup *w) 4867ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3612{ 4868{
3613 if (expect_false (ev_is_active (w))) 4869 if (expect_false (ev_is_active (w)))
3614 return; 4870 return;
3615 4871
3616 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
… …
3623 ev_unref (EV_A); 4879 ev_unref (EV_A);
3624 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3625} 4881}
3626 4882
3627void 4883void
3628ev_cleanup_stop (EV_P_ ev_cleanup *w) 4884ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3629{ 4885{
3630 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3631 if (expect_false (!ev_is_active (w))) 4887 if (expect_false (!ev_is_active (w)))
3632 return; 4888 return;
3633 4889
… …
3647} 4903}
3648#endif 4904#endif
3649 4905
3650#if EV_ASYNC_ENABLE 4906#if EV_ASYNC_ENABLE
3651void 4907void
3652ev_async_start (EV_P_ ev_async *w) 4908ev_async_start (EV_P_ ev_async *w) EV_THROW
3653{ 4909{
3654 if (expect_false (ev_is_active (w))) 4910 if (expect_false (ev_is_active (w)))
3655 return; 4911 return;
3656 4912
3657 w->sent = 0; 4913 w->sent = 0;
… …
3666 4922
3667 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3668} 4924}
3669 4925
3670void 4926void
3671ev_async_stop (EV_P_ ev_async *w) 4927ev_async_stop (EV_P_ ev_async *w) EV_THROW
3672{ 4928{
3673 clear_pending (EV_A_ (W)w); 4929 clear_pending (EV_A_ (W)w);
3674 if (expect_false (!ev_is_active (w))) 4930 if (expect_false (!ev_is_active (w)))
3675 return; 4931 return;
3676 4932
… …
3687 4943
3688 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3689} 4945}
3690 4946
3691void 4947void
3692ev_async_send (EV_P_ ev_async *w) 4948ev_async_send (EV_P_ ev_async *w) EV_THROW
3693{ 4949{
3694 w->sent = 1; 4950 w->sent = 1;
3695 evpipe_write (EV_A_ &async_pending); 4951 evpipe_write (EV_A_ &async_pending);
3696} 4952}
3697#endif 4953#endif
… …
3734 4990
3735 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));
3736} 4992}
3737 4993
3738void 4994void
3739ev_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
3740{ 4996{
3741 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));
3742 4998
3743 if (expect_false (!once)) 4999 if (expect_false (!once))
3744 { 5000 {
… …
3765} 5021}
3766 5022
3767/*****************************************************************************/ 5023/*****************************************************************************/
3768 5024
3769#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
5026ecb_cold
3770void 5027void
3771ev_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
3772{ 5029{
3773 int i, j; 5030 int i, j;
3774 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
3775 5032
3776 if (types & (EV_IO | EV_EMBED)) 5033 if (types & (EV_IO | EV_EMBED))
… …
3819 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5076 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3820#endif 5077#endif
3821 5078
3822#if EV_IDLE_ENABLE 5079#if EV_IDLE_ENABLE
3823 if (types & EV_IDLE) 5080 if (types & EV_IDLE)
3824 for (j = NUMPRI; i--; ) 5081 for (j = NUMPRI; j--; )
3825 for (i = idlecnt [j]; i--; ) 5082 for (i = idlecnt [j]; i--; )
3826 cb (EV_A_ EV_IDLE, idles [j][i]); 5083 cb (EV_A_ EV_IDLE, idles [j][i]);
3827#endif 5084#endif
3828 5085
3829#if EV_FORK_ENABLE 5086#if EV_FORK_ENABLE
… …
3882 5139
3883#if EV_MULTIPLICITY 5140#if EV_MULTIPLICITY
3884 #include "ev_wrap.h" 5141 #include "ev_wrap.h"
3885#endif 5142#endif
3886 5143
3887EV_CPP(})
3888

Diff Legend

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