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Comparing libev/ev.c (file contents):
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC vs.
Revision 1.475 by sf-exg, Wed Apr 1 06:57:41 2015 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
178# include EV_H 183# include EV_H
179#else 184#else
180# include "ev.h" 185# include "ev.h"
181#endif 186#endif
182 187
183EV_CPP(extern "C" {) 188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
184 198
185#ifndef _WIN32 199#ifndef _WIN32
186# include <sys/time.h> 200# include <sys/time.h>
187# include <sys/wait.h> 201# include <sys/wait.h>
188# include <unistd.h> 202# include <unistd.h>
189#else 203#else
190# include <io.h> 204# include <io.h>
191# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
192# include <windows.h> 207# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
195# endif 210# endif
196# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
205#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
206 221
207/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
208 223
209/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 225#if defined EV_NSIG
211/* use what's provided */ 226/* use what's provided */
212#elif defined (NSIG) 227#elif defined NSIG
213# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 229#elif defined _NSIG
215# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 231#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 233#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 237#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 239#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 243#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 245#else
231# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 247#endif
233/* but consider reporting it, too! :) */ 248
234# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
235#endif 251#endif
236 252
237#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 256# else
241# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
242# endif 258# endif
243#endif 259#endif
244 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
245#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 273# else
249# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
250# endif 275# endif
251#endif 276#endif
… …
338 363
339#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 366#endif
342 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 387# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
351# else 392# else
… …
354# endif 395# endif
355#endif 396#endif
356 397
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 399
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
368#endif 403#endif
369 404
… …
376# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
378#endif 413#endif
379 414
380#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 418# include <sys/select.h>
383# endif 419# endif
384#endif 420#endif
385 421
386#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h> 423# include <sys/statfs.h>
389# include <sys/inotify.h> 424# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
394# endif 429# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 430#endif
400 431
401#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 434# include <stdint.h>
… …
443#else 474#else
444# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
445#endif 476#endif
446 477
447/* 478/*
448 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 481 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 484
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 487
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 546 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
465# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
466#else 562#else
467# define expect(expr,value) (expr) 563 #include <inttypes.h>
468# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
470# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
471# 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
472#endif 580 #endif
581#endif
473 582
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#ifndef ECB_MEMORY_FENCE
648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
649 #if __i386 || __i386__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
651 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
652 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
653 #elif ECB_GCC_AMD64
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
665 #elif __aarch64__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
667 #elif (__sparc || __sparc__) && !__sparcv8
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
671 #elif defined __s390__ || defined __s390x__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
673 #elif defined __mips__
674 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
675 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
677 #elif defined __alpha__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
679 #elif defined __hppa__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
681 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
682 #elif defined __ia64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
684 #elif defined __m68k__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #elif defined __m88k__
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
688 #elif defined __sh__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
690 #endif
691 #endif
692#endif
693
694#ifndef ECB_MEMORY_FENCE
695 #if ECB_GCC_VERSION(4,7)
696 /* see comment below (stdatomic.h) about the C11 memory model. */
697 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
698 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
699 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
700
701 #elif ECB_CLANG_EXTENSION(c_atomic)
702 /* see comment below (stdatomic.h) about the C11 memory model. */
703 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
704 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
705 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
706
707 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
708 #define ECB_MEMORY_FENCE __sync_synchronize ()
709 #elif _MSC_VER >= 1500 /* VC++ 2008 */
710 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
711 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
712 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
713 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
714 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
715 #elif _MSC_VER >= 1400 /* VC++ 2005 */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
720 #elif defined _WIN32
721 #include <WinNT.h>
722 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
723 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #include <mbarrier.h>
725 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
726 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
727 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
728 #elif __xlC__
729 #define ECB_MEMORY_FENCE __sync ()
730 #endif
731#endif
732
733#ifndef ECB_MEMORY_FENCE
734 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
735 /* we assume that these memory fences work on all variables/all memory accesses, */
736 /* not just C11 atomics and atomic accesses */
737 #include <stdatomic.h>
738 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
739 /* any fence other than seq_cst, which isn't very efficient for us. */
740 /* Why that is, we don't know - either the C11 memory model is quite useless */
741 /* for most usages, or gcc and clang have a bug */
742 /* I *currently* lean towards the latter, and inefficiently implement */
743 /* all three of ecb's fences as a seq_cst fence */
744 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
745 /* for all __atomic_thread_fence's except seq_cst */
746 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if !ECB_AVOID_PTHREADS
752 /*
753 * if you get undefined symbol references to pthread_mutex_lock,
754 * or failure to find pthread.h, then you should implement
755 * the ECB_MEMORY_FENCE operations for your cpu/compiler
756 * OR provide pthread.h and link against the posix thread library
757 * of your system.
758 */
759 #include <pthread.h>
760 #define ECB_NEEDS_PTHREADS 1
761 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
762
763 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
764 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
765 #endif
766#endif
767
768#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
769 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
770#endif
771
772#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
773 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
774#endif
775
776/*****************************************************************************/
777
778#if ECB_CPP
779 #define ecb_inline static inline
780#elif ECB_GCC_VERSION(2,5)
781 #define ecb_inline static __inline__
782#elif ECB_C99
783 #define ecb_inline static inline
784#else
785 #define ecb_inline static
786#endif
787
788#if ECB_GCC_VERSION(3,3)
789 #define ecb_restrict __restrict__
790#elif ECB_C99
791 #define ecb_restrict restrict
792#else
793 #define ecb_restrict
794#endif
795
796typedef int ecb_bool;
797
798#define ECB_CONCAT_(a, b) a ## b
799#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
800#define ECB_STRINGIFY_(a) # a
801#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
802#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
803
804#define ecb_function_ ecb_inline
805
806#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
807 #define ecb_attribute(attrlist) __attribute__ (attrlist)
808#else
809 #define ecb_attribute(attrlist)
810#endif
811
812#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
813 #define ecb_is_constant(expr) __builtin_constant_p (expr)
814#else
815 /* possible C11 impl for integral types
816 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
817 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
818
819 #define ecb_is_constant(expr) 0
820#endif
821
822#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
823 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
824#else
825 #define ecb_expect(expr,value) (expr)
826#endif
827
828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
829 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
830#else
831 #define ecb_prefetch(addr,rw,locality)
832#endif
833
834/* no emulation for ecb_decltype */
835#if ECB_CPP11
836 // older implementations might have problems with decltype(x)::type, work around it
837 template<class T> struct ecb_decltype_t { typedef T type; };
838 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
839#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
840 #define ecb_decltype(x) __typeof__ (x)
841#endif
842
843#if _MSC_VER >= 1300
844 #define ecb_deprecated __declspec (deprecated)
845#else
846 #define ecb_deprecated ecb_attribute ((__deprecated__))
847#endif
848
849#if __MSC_VER >= 1500
850 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
851#elif ECB_GCC_VERSION(4,5)
852 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
853#else
854 #define ecb_deprecated_message(msg) ecb_deprecated
855#endif
856
857#if _MSC_VER >= 1400
858 #define ecb_noinline __declspec (noinline)
859#else
860 #define ecb_noinline ecb_attribute ((__noinline__))
861#endif
862
863#define ecb_unused ecb_attribute ((__unused__))
864#define ecb_const ecb_attribute ((__const__))
865#define ecb_pure ecb_attribute ((__pure__))
866
867#if ECB_C11 || __IBMC_NORETURN
868 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
869 #define ecb_noreturn _Noreturn
870#elif ECB_CPP11
871 #define ecb_noreturn [[noreturn]]
872#elif _MSC_VER >= 1200
873 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
874 #define ecb_noreturn __declspec (noreturn)
875#else
876 #define ecb_noreturn ecb_attribute ((__noreturn__))
877#endif
878
879#if ECB_GCC_VERSION(4,3)
880 #define ecb_artificial ecb_attribute ((__artificial__))
881 #define ecb_hot ecb_attribute ((__hot__))
882 #define ecb_cold ecb_attribute ((__cold__))
883#else
884 #define ecb_artificial
885 #define ecb_hot
886 #define ecb_cold
887#endif
888
889/* put around conditional expressions if you are very sure that the */
890/* expression is mostly true or mostly false. note that these return */
891/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 892#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 893#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
894/* for compatibility to the rest of the world */
895#define ecb_likely(expr) ecb_expect_true (expr)
896#define ecb_unlikely(expr) ecb_expect_false (expr)
897
898/* count trailing zero bits and count # of one bits */
899#if ECB_GCC_VERSION(3,4) \
900 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
901 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
902 && ECB_CLANG_BUILTIN(__builtin_popcount))
903 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
904 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
905 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
906 #define ecb_ctz32(x) __builtin_ctz (x)
907 #define ecb_ctz64(x) __builtin_ctzll (x)
908 #define ecb_popcount32(x) __builtin_popcount (x)
909 /* no popcountll */
910#else
911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
912 ecb_function_ ecb_const int
913 ecb_ctz32 (uint32_t x)
914 {
915 int r = 0;
916
917 x &= ~x + 1; /* this isolates the lowest bit */
918
919#if ECB_branchless_on_i386
920 r += !!(x & 0xaaaaaaaa) << 0;
921 r += !!(x & 0xcccccccc) << 1;
922 r += !!(x & 0xf0f0f0f0) << 2;
923 r += !!(x & 0xff00ff00) << 3;
924 r += !!(x & 0xffff0000) << 4;
925#else
926 if (x & 0xaaaaaaaa) r += 1;
927 if (x & 0xcccccccc) r += 2;
928 if (x & 0xf0f0f0f0) r += 4;
929 if (x & 0xff00ff00) r += 8;
930 if (x & 0xffff0000) r += 16;
931#endif
932
933 return r;
934 }
935
936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
937 ecb_function_ ecb_const int
938 ecb_ctz64 (uint64_t x)
939 {
940 int shift = x & 0xffffffffU ? 0 : 32;
941 return ecb_ctz32 (x >> shift) + shift;
942 }
943
944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
945 ecb_function_ ecb_const int
946 ecb_popcount32 (uint32_t x)
947 {
948 x -= (x >> 1) & 0x55555555;
949 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
950 x = ((x >> 4) + x) & 0x0f0f0f0f;
951 x *= 0x01010101;
952
953 return x >> 24;
954 }
955
956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
958 {
959 int r = 0;
960
961 if (x >> 16) { x >>= 16; r += 16; }
962 if (x >> 8) { x >>= 8; r += 8; }
963 if (x >> 4) { x >>= 4; r += 4; }
964 if (x >> 2) { x >>= 2; r += 2; }
965 if (x >> 1) { r += 1; }
966
967 return r;
968 }
969
970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
972 {
973 int r = 0;
974
975 if (x >> 32) { x >>= 32; r += 32; }
976
977 return r + ecb_ld32 (x);
978 }
979#endif
980
981ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
982ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
983ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
984ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
985
986ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
987ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
988{
989 return ( (x * 0x0802U & 0x22110U)
990 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
991}
992
993ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
994ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
995{
996 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
997 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
998 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
999 x = ( x >> 8 ) | ( x << 8);
1000
1001 return x;
1002}
1003
1004ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1005ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1006{
1007 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1008 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1009 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1010 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1011 x = ( x >> 16 ) | ( x << 16);
1012
1013 return x;
1014}
1015
1016/* popcount64 is only available on 64 bit cpus as gcc builtin */
1017/* so for this version we are lazy */
1018ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1019ecb_function_ ecb_const int
1020ecb_popcount64 (uint64_t x)
1021{
1022 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1023}
1024
1025ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1026ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1027ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1028ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1029ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1030ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1031ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1032ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1033
1034ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1035ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1036ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1037ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1038ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1039ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1041ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1042
1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1045 #define ecb_bswap32(x) __builtin_bswap32 (x)
1046 #define ecb_bswap64(x) __builtin_bswap64 (x)
1047#else
1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1049 ecb_function_ ecb_const uint16_t
1050 ecb_bswap16 (uint16_t x)
1051 {
1052 return ecb_rotl16 (x, 8);
1053 }
1054
1055 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1056 ecb_function_ ecb_const uint32_t
1057 ecb_bswap32 (uint32_t x)
1058 {
1059 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1060 }
1061
1062 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1063 ecb_function_ ecb_const uint64_t
1064 ecb_bswap64 (uint64_t x)
1065 {
1066 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1067 }
1068#endif
1069
1070#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1071 #define ecb_unreachable() __builtin_unreachable ()
1072#else
1073 /* this seems to work fine, but gcc always emits a warning for it :/ */
1074 ecb_inline ecb_noreturn void ecb_unreachable (void);
1075 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1076#endif
1077
1078/* try to tell the compiler that some condition is definitely true */
1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1080
1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1082ecb_inline ecb_const unsigned char
1083ecb_byteorder_helper (void)
1084{
1085 /* the union code still generates code under pressure in gcc, */
1086 /* but less than using pointers, and always seems to */
1087 /* successfully return a constant. */
1088 /* the reason why we have this horrible preprocessor mess */
1089 /* is to avoid it in all cases, at least on common architectures */
1090 /* or when using a recent enough gcc version (>= 4.6) */
1091#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1092 return 0x44;
1093#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1094 return 0x44;
1095#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1096 return 0x11;
1097#else
1098 union
1099 {
1100 uint32_t i;
1101 uint8_t c;
1102 } u = { 0x11223344 };
1103 return u.c;
1104#endif
1105}
1106
1107ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1109ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1111
1112#if ECB_GCC_VERSION(3,0) || ECB_C99
1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1114#else
1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1116#endif
1117
1118#if ECB_CPP
1119 template<typename T>
1120 static inline T ecb_div_rd (T val, T div)
1121 {
1122 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1123 }
1124 template<typename T>
1125 static inline T ecb_div_ru (T val, T div)
1126 {
1127 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1128 }
1129#else
1130 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1131 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1132#endif
1133
1134#if ecb_cplusplus_does_not_suck
1135 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1136 template<typename T, int N>
1137 static inline int ecb_array_length (const T (&arr)[N])
1138 {
1139 return N;
1140 }
1141#else
1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1143#endif
1144
1145/*******************************************************************************/
1146/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1147
1148/* basically, everything uses "ieee pure-endian" floating point numbers */
1149/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1150#if 0 \
1151 || __i386 || __i386__ \
1152 || ECB_GCC_AMD64 \
1153 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1154 || defined __s390__ || defined __s390x__ \
1155 || defined __mips__ \
1156 || defined __alpha__ \
1157 || defined __hppa__ \
1158 || defined __ia64__ \
1159 || defined __m68k__ \
1160 || defined __m88k__ \
1161 || defined __sh__ \
1162 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1163 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1164 || defined __aarch64__
1165 #define ECB_STDFP 1
1166 #include <string.h> /* for memcpy */
1167#else
1168 #define ECB_STDFP 0
1169#endif
1170
1171#ifndef ECB_NO_LIBM
1172
1173 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1174
1175 /* only the oldest of old doesn't have this one. solaris. */
1176 #ifdef INFINITY
1177 #define ECB_INFINITY INFINITY
1178 #else
1179 #define ECB_INFINITY HUGE_VAL
1180 #endif
1181
1182 #ifdef NAN
1183 #define ECB_NAN NAN
1184 #else
1185 #define ECB_NAN ECB_INFINITY
1186 #endif
1187
1188 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1189 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1190 #else
1191 #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e))
1192 #endif
1193
1194 /* converts an ieee half/binary16 to a float */
1195 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1196 ecb_function_ ecb_const float
1197 ecb_binary16_to_float (uint16_t x)
1198 {
1199 int e = (x >> 10) & 0x1f;
1200 int m = x & 0x3ff;
1201 float r;
1202
1203 if (!e ) r = ecb_ldexpf (m , -24);
1204 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1205 else if (m ) r = ECB_NAN;
1206 else r = ECB_INFINITY;
1207
1208 return x & 0x8000 ? -r : r;
1209 }
1210
1211 /* convert a float to ieee single/binary32 */
1212 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1213 ecb_function_ ecb_const uint32_t
1214 ecb_float_to_binary32 (float x)
1215 {
1216 uint32_t r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 4);
1220 #else
1221 /* slow emulation, works for anything but -0 */
1222 uint32_t m;
1223 int e;
1224
1225 if (x == 0e0f ) return 0x00000000U;
1226 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1227 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1228 if (x != x ) return 0x7fbfffffU;
1229
1230 m = frexpf (x, &e) * 0x1000000U;
1231
1232 r = m & 0x80000000U;
1233
1234 if (r)
1235 m = -m;
1236
1237 if (e <= -126)
1238 {
1239 m &= 0xffffffU;
1240 m >>= (-125 - e);
1241 e = -126;
1242 }
1243
1244 r |= (e + 126) << 23;
1245 r |= m & 0x7fffffU;
1246 #endif
1247
1248 return r;
1249 }
1250
1251 /* converts an ieee single/binary32 to a float */
1252 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1253 ecb_function_ ecb_const float
1254 ecb_binary32_to_float (uint32_t x)
1255 {
1256 float r;
1257
1258 #if ECB_STDFP
1259 memcpy (&r, &x, 4);
1260 #else
1261 /* emulation, only works for normals and subnormals and +0 */
1262 int neg = x >> 31;
1263 int e = (x >> 23) & 0xffU;
1264
1265 x &= 0x7fffffU;
1266
1267 if (e)
1268 x |= 0x800000U;
1269 else
1270 e = 1;
1271
1272 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1273 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1274
1275 r = neg ? -r : r;
1276 #endif
1277
1278 return r;
1279 }
1280
1281 /* convert a double to ieee double/binary64 */
1282 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1283 ecb_function_ ecb_const uint64_t
1284 ecb_double_to_binary64 (double x)
1285 {
1286 uint64_t r;
1287
1288 #if ECB_STDFP
1289 memcpy (&r, &x, 8);
1290 #else
1291 /* slow emulation, works for anything but -0 */
1292 uint64_t m;
1293 int e;
1294
1295 if (x == 0e0 ) return 0x0000000000000000U;
1296 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1297 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1298 if (x != x ) return 0X7ff7ffffffffffffU;
1299
1300 m = frexp (x, &e) * 0x20000000000000U;
1301
1302 r = m & 0x8000000000000000;;
1303
1304 if (r)
1305 m = -m;
1306
1307 if (e <= -1022)
1308 {
1309 m &= 0x1fffffffffffffU;
1310 m >>= (-1021 - e);
1311 e = -1022;
1312 }
1313
1314 r |= ((uint64_t)(e + 1022)) << 52;
1315 r |= m & 0xfffffffffffffU;
1316 #endif
1317
1318 return r;
1319 }
1320
1321 /* converts an ieee double/binary64 to a double */
1322 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1323 ecb_function_ ecb_const double
1324 ecb_binary64_to_double (uint64_t x)
1325 {
1326 double r;
1327
1328 #if ECB_STDFP
1329 memcpy (&r, &x, 8);
1330 #else
1331 /* emulation, only works for normals and subnormals and +0 */
1332 int neg = x >> 63;
1333 int e = (x >> 52) & 0x7ffU;
1334
1335 x &= 0xfffffffffffffU;
1336
1337 if (e)
1338 x |= 0x10000000000000U;
1339 else
1340 e = 1;
1341
1342 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1343 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1344
1345 r = neg ? -r : r;
1346 #endif
1347
1348 return r;
1349 }
1350
1351#endif
1352
1353#endif
1354
1355/* ECB.H END */
1356
1357#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1358/* if your architecture doesn't need memory fences, e.g. because it is
1359 * single-cpu/core, or if you use libev in a project that doesn't use libev
1360 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1361 * libev, in which cases the memory fences become nops.
1362 * alternatively, you can remove this #error and link against libpthread,
1363 * which will then provide the memory fences.
1364 */
1365# error "memory fences not defined for your architecture, please report"
1366#endif
1367
1368#ifndef ECB_MEMORY_FENCE
1369# define ECB_MEMORY_FENCE do { } while (0)
1370# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1371# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1372#endif
1373
1374#define expect_false(cond) ecb_expect_false (cond)
1375#define expect_true(cond) ecb_expect_true (cond)
1376#define noinline ecb_noinline
1377
476#define inline_size static inline 1378#define inline_size ecb_inline
477 1379
478#if EV_FEATURE_CODE 1380#if EV_FEATURE_CODE
479# define inline_speed static inline 1381# define inline_speed ecb_inline
480#else 1382#else
481# define inline_speed static noinline 1383# define inline_speed static noinline
482#endif 1384#endif
483 1385
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1386#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
523# include "ev_win32.c" 1425# include "ev_win32.c"
524#endif 1426#endif
525 1427
526/*****************************************************************************/ 1428/*****************************************************************************/
527 1429
1430/* define a suitable floor function (only used by periodics atm) */
1431
1432#if EV_USE_FLOOR
1433# include <math.h>
1434# define ev_floor(v) floor (v)
1435#else
1436
1437#include <float.h>
1438
1439/* a floor() replacement function, should be independent of ev_tstamp type */
1440static ev_tstamp noinline
1441ev_floor (ev_tstamp v)
1442{
1443 /* the choice of shift factor is not terribly important */
1444#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1445 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1446#else
1447 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1448#endif
1449
1450 /* argument too large for an unsigned long? */
1451 if (expect_false (v >= shift))
1452 {
1453 ev_tstamp f;
1454
1455 if (v == v - 1.)
1456 return v; /* very large number */
1457
1458 f = shift * ev_floor (v * (1. / shift));
1459 return f + ev_floor (v - f);
1460 }
1461
1462 /* special treatment for negative args? */
1463 if (expect_false (v < 0.))
1464 {
1465 ev_tstamp f = -ev_floor (-v);
1466
1467 return f - (f == v ? 0 : 1);
1468 }
1469
1470 /* fits into an unsigned long */
1471 return (unsigned long)v;
1472}
1473
1474#endif
1475
1476/*****************************************************************************/
1477
1478#ifdef __linux
1479# include <sys/utsname.h>
1480#endif
1481
1482static unsigned int noinline ecb_cold
1483ev_linux_version (void)
1484{
1485#ifdef __linux
1486 unsigned int v = 0;
1487 struct utsname buf;
1488 int i;
1489 char *p = buf.release;
1490
1491 if (uname (&buf))
1492 return 0;
1493
1494 for (i = 3+1; --i; )
1495 {
1496 unsigned int c = 0;
1497
1498 for (;;)
1499 {
1500 if (*p >= '0' && *p <= '9')
1501 c = c * 10 + *p++ - '0';
1502 else
1503 {
1504 p += *p == '.';
1505 break;
1506 }
1507 }
1508
1509 v = (v << 8) | c;
1510 }
1511
1512 return v;
1513#else
1514 return 0;
1515#endif
1516}
1517
1518/*****************************************************************************/
1519
528#if EV_AVOID_STDIO 1520#if EV_AVOID_STDIO
529static void noinline 1521static void noinline ecb_cold
530ev_printerr (const char *msg) 1522ev_printerr (const char *msg)
531{ 1523{
532 write (STDERR_FILENO, msg, strlen (msg)); 1524 write (STDERR_FILENO, msg, strlen (msg));
533} 1525}
534#endif 1526#endif
535 1527
536static void (*syserr_cb)(const char *msg); 1528static void (*syserr_cb)(const char *msg) EV_THROW;
537 1529
538void 1530void ecb_cold
539ev_set_syserr_cb (void (*cb)(const char *msg)) 1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
540{ 1532{
541 syserr_cb = cb; 1533 syserr_cb = cb;
542} 1534}
543 1535
544static void noinline 1536static void noinline ecb_cold
545ev_syserr (const char *msg) 1537ev_syserr (const char *msg)
546{ 1538{
547 if (!msg) 1539 if (!msg)
548 msg = "(libev) system error"; 1540 msg = "(libev) system error";
549 1541
550 if (syserr_cb) 1542 if (syserr_cb)
551 syserr_cb (msg); 1543 syserr_cb (msg);
552 else 1544 else
553 { 1545 {
554#if EV_AVOID_STDIO 1546#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg); 1547 ev_printerr (msg);
558 ev_printerr (": "); 1548 ev_printerr (": ");
559 ev_printerr (err); 1549 ev_printerr (strerror (errno));
560 ev_printerr ("\n"); 1550 ev_printerr ("\n");
561#else 1551#else
562 perror (msg); 1552 perror (msg);
563#endif 1553#endif
564 abort (); 1554 abort ();
565 } 1555 }
566} 1556}
567 1557
568static void * 1558static void *
569ev_realloc_emul (void *ptr, long size) 1559ev_realloc_emul (void *ptr, long size) EV_THROW
570{ 1560{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
574 /* some systems, notably openbsd and darwin, fail to properly 1561 /* some systems, notably openbsd and darwin, fail to properly
575 * implement realloc (x, 0) (as required by both ansi c-89 and 1562 * implement realloc (x, 0) (as required by both ansi c-89 and
576 * the single unix specification, so work around them here. 1563 * the single unix specification, so work around them here.
1564 * recently, also (at least) fedora and debian started breaking it,
1565 * despite documenting it otherwise.
577 */ 1566 */
578 1567
579 if (size) 1568 if (size)
580 return realloc (ptr, size); 1569 return realloc (ptr, size);
581 1570
582 free (ptr); 1571 free (ptr);
583 return 0; 1572 return 0;
584#endif
585} 1573}
586 1574
587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
588 1576
589void 1577void ecb_cold
590ev_set_allocator (void *(*cb)(void *ptr, long size)) 1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
591{ 1579{
592 alloc = cb; 1580 alloc = cb;
593} 1581}
594 1582
595inline_speed void * 1583inline_speed void *
… …
598 ptr = alloc (ptr, size); 1586 ptr = alloc (ptr, size);
599 1587
600 if (!ptr && size) 1588 if (!ptr && size)
601 { 1589 {
602#if EV_AVOID_STDIO 1590#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1591 ev_printerr ("(libev) memory allocation failed, aborting.\n");
604#else 1592#else
605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1593 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
606#endif 1594#endif
607 abort (); 1595 abort ();
608 } 1596 }
609 1597
610 return ptr; 1598 return ptr;
… …
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1615 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
628 unsigned char unused; 1616 unsigned char unused;
629#if EV_USE_EPOLL 1617#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */ 1618 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif 1619#endif
632#if EV_SELECT_IS_WINSOCKET 1620#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
633 SOCKET handle; 1621 SOCKET handle;
1622#endif
1623#if EV_USE_IOCP
1624 OVERLAPPED or, ow;
634#endif 1625#endif
635} ANFD; 1626} ANFD;
636 1627
637/* stores the pending event set for a given watcher */ 1628/* stores the pending event set for a given watcher */
638typedef struct 1629typedef struct
… …
680 #undef VAR 1671 #undef VAR
681 }; 1672 };
682 #include "ev_wrap.h" 1673 #include "ev_wrap.h"
683 1674
684 static struct ev_loop default_loop_struct; 1675 static struct ev_loop default_loop_struct;
685 struct ev_loop *ev_default_loop_ptr; 1676 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
686 1677
687#else 1678#else
688 1679
689 ev_tstamp ev_rt_now; 1680 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
690 #define VAR(name,decl) static decl; 1681 #define VAR(name,decl) static decl;
691 #include "ev_vars.h" 1682 #include "ev_vars.h"
692 #undef VAR 1683 #undef VAR
693 1684
694 static int ev_default_loop_ptr; 1685 static int ev_default_loop_ptr;
… …
709 1700
710/*****************************************************************************/ 1701/*****************************************************************************/
711 1702
712#ifndef EV_HAVE_EV_TIME 1703#ifndef EV_HAVE_EV_TIME
713ev_tstamp 1704ev_tstamp
714ev_time (void) 1705ev_time (void) EV_THROW
715{ 1706{
716#if EV_USE_REALTIME 1707#if EV_USE_REALTIME
717 if (expect_true (have_realtime)) 1708 if (expect_true (have_realtime))
718 { 1709 {
719 struct timespec ts; 1710 struct timespec ts;
… …
743 return ev_time (); 1734 return ev_time ();
744} 1735}
745 1736
746#if EV_MULTIPLICITY 1737#if EV_MULTIPLICITY
747ev_tstamp 1738ev_tstamp
748ev_now (EV_P) 1739ev_now (EV_P) EV_THROW
749{ 1740{
750 return ev_rt_now; 1741 return ev_rt_now;
751} 1742}
752#endif 1743#endif
753 1744
754void 1745void
755ev_sleep (ev_tstamp delay) 1746ev_sleep (ev_tstamp delay) EV_THROW
756{ 1747{
757 if (delay > 0.) 1748 if (delay > 0.)
758 { 1749 {
759#if EV_USE_NANOSLEEP 1750#if EV_USE_NANOSLEEP
760 struct timespec ts; 1751 struct timespec ts;
761 1752
762 EV_TS_SET (ts, delay); 1753 EV_TS_SET (ts, delay);
763 nanosleep (&ts, 0); 1754 nanosleep (&ts, 0);
764#elif defined(_WIN32) 1755#elif defined _WIN32
765 Sleep ((unsigned long)(delay * 1e3)); 1756 Sleep ((unsigned long)(delay * 1e3));
766#else 1757#else
767 struct timeval tv; 1758 struct timeval tv;
768 1759
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1760 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
788 1779
789 do 1780 do
790 ncur <<= 1; 1781 ncur <<= 1;
791 while (cnt > ncur); 1782 while (cnt > ncur);
792 1783
793 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1784 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
794 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1785 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
795 { 1786 {
796 ncur *= elem; 1787 ncur *= elem;
797 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1788 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
798 ncur = ncur - sizeof (void *) * 4; 1789 ncur = ncur - sizeof (void *) * 4;
… …
800 } 1791 }
801 1792
802 return ncur; 1793 return ncur;
803} 1794}
804 1795
805static noinline void * 1796static void * noinline ecb_cold
806array_realloc (int elem, void *base, int *cur, int cnt) 1797array_realloc (int elem, void *base, int *cur, int cnt)
807{ 1798{
808 *cur = array_nextsize (elem, *cur, cnt); 1799 *cur = array_nextsize (elem, *cur, cnt);
809 return ev_realloc (base, elem * *cur); 1800 return ev_realloc (base, elem * *cur);
810} 1801}
… …
813 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1804 memset ((void *)(base), 0, sizeof (*(base)) * (count))
814 1805
815#define array_needsize(type,base,cur,cnt,init) \ 1806#define array_needsize(type,base,cur,cnt,init) \
816 if (expect_false ((cnt) > (cur))) \ 1807 if (expect_false ((cnt) > (cur))) \
817 { \ 1808 { \
818 int ocur_ = (cur); \ 1809 int ecb_unused ocur_ = (cur); \
819 (base) = (type *)array_realloc \ 1810 (base) = (type *)array_realloc \
820 (sizeof (type), (base), &(cur), (cnt)); \ 1811 (sizeof (type), (base), &(cur), (cnt)); \
821 init ((base) + (ocur_), (cur) - ocur_); \ 1812 init ((base) + (ocur_), (cur) - ocur_); \
822 } 1813 }
823 1814
… …
841pendingcb (EV_P_ ev_prepare *w, int revents) 1832pendingcb (EV_P_ ev_prepare *w, int revents)
842{ 1833{
843} 1834}
844 1835
845void noinline 1836void noinline
846ev_feed_event (EV_P_ void *w, int revents) 1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW
847{ 1838{
848 W w_ = (W)w; 1839 W w_ = (W)w;
849 int pri = ABSPRI (w_); 1840 int pri = ABSPRI (w_);
850 1841
851 if (expect_false (w_->pending)) 1842 if (expect_false (w_->pending))
… …
855 w_->pending = ++pendingcnt [pri]; 1846 w_->pending = ++pendingcnt [pri];
856 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
857 pendings [pri][w_->pending - 1].w = w_; 1848 pendings [pri][w_->pending - 1].w = w_;
858 pendings [pri][w_->pending - 1].events = revents; 1849 pendings [pri][w_->pending - 1].events = revents;
859 } 1850 }
1851
1852 pendingpri = NUMPRI - 1;
860} 1853}
861 1854
862inline_speed void 1855inline_speed void
863feed_reverse (EV_P_ W w) 1856feed_reverse (EV_P_ W w)
864{ 1857{
… …
910 if (expect_true (!anfd->reify)) 1903 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents); 1904 fd_event_nocheck (EV_A_ fd, revents);
912} 1905}
913 1906
914void 1907void
915ev_feed_fd_event (EV_P_ int fd, int revents) 1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
916{ 1909{
917 if (fd >= 0 && fd < anfdmax) 1910 if (fd >= 0 && fd < anfdmax)
918 fd_event_nocheck (EV_A_ fd, revents); 1911 fd_event_nocheck (EV_A_ fd, revents);
919} 1912}
920 1913
… …
923inline_size void 1916inline_size void
924fd_reify (EV_P) 1917fd_reify (EV_P)
925{ 1918{
926 int i; 1919 int i;
927 1920
1921#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1922 for (i = 0; i < fdchangecnt; ++i)
1923 {
1924 int fd = fdchanges [i];
1925 ANFD *anfd = anfds + fd;
1926
1927 if (anfd->reify & EV__IOFDSET && anfd->head)
1928 {
1929 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1930
1931 if (handle != anfd->handle)
1932 {
1933 unsigned long arg;
1934
1935 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1936
1937 /* handle changed, but fd didn't - we need to do it in two steps */
1938 backend_modify (EV_A_ fd, anfd->events, 0);
1939 anfd->events = 0;
1940 anfd->handle = handle;
1941 }
1942 }
1943 }
1944#endif
1945
928 for (i = 0; i < fdchangecnt; ++i) 1946 for (i = 0; i < fdchangecnt; ++i)
929 { 1947 {
930 int fd = fdchanges [i]; 1948 int fd = fdchanges [i];
931 ANFD *anfd = anfds + fd; 1949 ANFD *anfd = anfds + fd;
932 ev_io *w; 1950 ev_io *w;
… …
934 unsigned char o_events = anfd->events; 1952 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify; 1953 unsigned char o_reify = anfd->reify;
936 1954
937 anfd->reify = 0; 1955 anfd->reify = 0;
938 1956
939#if EV_SELECT_IS_WINSOCKET
940 if (o_reify & EV__IOFDSET)
941 {
942 unsigned long arg;
943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
945 }
946#endif
947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1957 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
949 { 1958 {
950 anfd->events = 0; 1959 anfd->events = 0;
951 1960
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1961 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
977 fdchanges [fdchangecnt - 1] = fd; 1986 fdchanges [fdchangecnt - 1] = fd;
978 } 1987 }
979} 1988}
980 1989
981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1990/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
982inline_speed void 1991inline_speed void ecb_cold
983fd_kill (EV_P_ int fd) 1992fd_kill (EV_P_ int fd)
984{ 1993{
985 ev_io *w; 1994 ev_io *w;
986 1995
987 while ((w = (ev_io *)anfds [fd].head)) 1996 while ((w = (ev_io *)anfds [fd].head))
… …
990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1999 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
991 } 2000 }
992} 2001}
993 2002
994/* check whether the given fd is actually valid, for error recovery */ 2003/* check whether the given fd is actually valid, for error recovery */
995inline_size int 2004inline_size int ecb_cold
996fd_valid (int fd) 2005fd_valid (int fd)
997{ 2006{
998#ifdef _WIN32 2007#ifdef _WIN32
999 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1000#else 2009#else
1001 return fcntl (fd, F_GETFD) != -1; 2010 return fcntl (fd, F_GETFD) != -1;
1002#endif 2011#endif
1003} 2012}
1004 2013
1005/* called on EBADF to verify fds */ 2014/* called on EBADF to verify fds */
1006static void noinline 2015static void noinline ecb_cold
1007fd_ebadf (EV_P) 2016fd_ebadf (EV_P)
1008{ 2017{
1009 int fd; 2018 int fd;
1010 2019
1011 for (fd = 0; fd < anfdmax; ++fd) 2020 for (fd = 0; fd < anfdmax; ++fd)
… …
1013 if (!fd_valid (fd) && errno == EBADF) 2022 if (!fd_valid (fd) && errno == EBADF)
1014 fd_kill (EV_A_ fd); 2023 fd_kill (EV_A_ fd);
1015} 2024}
1016 2025
1017/* called on ENOMEM in select/poll to kill some fds and retry */ 2026/* called on ENOMEM in select/poll to kill some fds and retry */
1018static void noinline 2027static void noinline ecb_cold
1019fd_enomem (EV_P) 2028fd_enomem (EV_P)
1020{ 2029{
1021 int fd; 2030 int fd;
1022 2031
1023 for (fd = anfdmax; fd--; ) 2032 for (fd = anfdmax; fd--; )
… …
1218 2227
1219/*****************************************************************************/ 2228/*****************************************************************************/
1220 2229
1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1222 2231
1223static void noinline 2232static void noinline ecb_cold
1224evpipe_init (EV_P) 2233evpipe_init (EV_P)
1225{ 2234{
1226 if (!ev_is_active (&pipe_w)) 2235 if (!ev_is_active (&pipe_w))
1227 { 2236 {
2237 int fds [2];
2238
1228# if EV_USE_EVENTFD 2239# if EV_USE_EVENTFD
2240 fds [0] = -1;
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2241 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL) 2242 if (fds [1] < 0 && errno == EINVAL)
1231 evfd = eventfd (0, 0); 2243 fds [1] = eventfd (0, 0);
1232 2244
1233 if (evfd >= 0) 2245 if (fds [1] < 0)
2246# endif
1234 { 2247 {
2248 while (pipe (fds))
2249 ev_syserr ("(libev) error creating signal/async pipe");
2250
2251 fd_intern (fds [0]);
2252 }
2253
1235 evpipe [0] = -1; 2254 evpipe [0] = fds [0];
1236 fd_intern (evfd); /* doing it twice doesn't hurt */ 2255
1237 ev_io_set (&pipe_w, evfd, EV_READ); 2256 if (evpipe [1] < 0)
2257 evpipe [1] = fds [1]; /* first call, set write fd */
2258 else
2259 {
2260 /* on subsequent calls, do not change evpipe [1] */
2261 /* so that evpipe_write can always rely on its value. */
2262 /* this branch does not do anything sensible on windows, */
2263 /* so must not be executed on windows */
2264
2265 dup2 (fds [1], evpipe [1]);
2266 close (fds [1]);
2267 }
2268
2269 fd_intern (evpipe [1]);
2270
2271 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2272 ev_io_start (EV_A_ &pipe_w);
2273 ev_unref (EV_A); /* watcher should not keep loop alive */
2274 }
2275}
2276
2277inline_speed void
2278evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2279{
2280 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2281
2282 if (expect_true (*flag))
2283 return;
2284
2285 *flag = 1;
2286 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2287
2288 pipe_write_skipped = 1;
2289
2290 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2291
2292 if (pipe_write_wanted)
2293 {
2294 int old_errno;
2295
2296 pipe_write_skipped = 0;
2297 ECB_MEMORY_FENCE_RELEASE;
2298
2299 old_errno = errno; /* save errno because write will clobber it */
2300
2301#if EV_USE_EVENTFD
2302 if (evpipe [0] < 0)
2303 {
2304 uint64_t counter = 1;
2305 write (evpipe [1], &counter, sizeof (uint64_t));
1238 } 2306 }
1239 else 2307 else
1240# endif 2308#endif
1241 { 2309 {
1242 while (pipe (evpipe)) 2310#ifdef _WIN32
1243 ev_syserr ("(libev) error creating signal/async pipe"); 2311 WSABUF buf;
1244 2312 DWORD sent;
1245 fd_intern (evpipe [0]); 2313 buf.buf = &buf;
1246 fd_intern (evpipe [1]); 2314 buf.len = 1;
1247 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2316#else
2317 write (evpipe [1], &(evpipe [1]), 1);
2318#endif
1248 } 2319 }
1249
1250 ev_io_start (EV_A_ &pipe_w);
1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1252 }
1253}
1254
1255inline_size void
1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1257{
1258 if (!*flag)
1259 {
1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1262
1263 *flag = 1;
1264
1265#if EV_USE_EVENTFD
1266 if (evfd >= 0)
1267 {
1268 uint64_t counter = 1;
1269 write (evfd, &counter, sizeof (uint64_t));
1270 }
1271 else
1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1278 write (evpipe [1], &dummy, 1);
1279 2320
1280 errno = old_errno; 2321 errno = old_errno;
1281 } 2322 }
1282} 2323}
1283 2324
… …
1286static void 2327static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2328pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2329{
1289 int i; 2330 int i;
1290 2331
2332 if (revents & EV_READ)
2333 {
1291#if EV_USE_EVENTFD 2334#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2335 if (evpipe [0] < 0)
1293 { 2336 {
1294 uint64_t counter; 2337 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2338 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2339 }
1297 else 2340 else
1298#endif 2341#endif
1299 { 2342 {
1300 char dummy; 2343 char dummy[4];
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2344#ifdef _WIN32
2345 WSABUF buf;
2346 DWORD recvd;
2347 DWORD flags = 0;
2348 buf.buf = dummy;
2349 buf.len = sizeof (dummy);
2350 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2351#else
1302 read (evpipe [0], &dummy, 1); 2352 read (evpipe [0], &dummy, sizeof (dummy));
2353#endif
2354 }
1303 } 2355 }
1304 2356
2357 pipe_write_skipped = 0;
2358
2359 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2360
2361#if EV_SIGNAL_ENABLE
1305 if (sig_pending) 2362 if (sig_pending)
1306 { 2363 {
1307 sig_pending = 0; 2364 sig_pending = 0;
2365
2366 ECB_MEMORY_FENCE;
1308 2367
1309 for (i = EV_NSIG - 1; i--; ) 2368 for (i = EV_NSIG - 1; i--; )
1310 if (expect_false (signals [i].pending)) 2369 if (expect_false (signals [i].pending))
1311 ev_feed_signal_event (EV_A_ i + 1); 2370 ev_feed_signal_event (EV_A_ i + 1);
1312 } 2371 }
2372#endif
1313 2373
1314#if EV_ASYNC_ENABLE 2374#if EV_ASYNC_ENABLE
1315 if (async_pending) 2375 if (async_pending)
1316 { 2376 {
1317 async_pending = 0; 2377 async_pending = 0;
2378
2379 ECB_MEMORY_FENCE;
1318 2380
1319 for (i = asynccnt; i--; ) 2381 for (i = asynccnt; i--; )
1320 if (asyncs [i]->sent) 2382 if (asyncs [i]->sent)
1321 { 2383 {
1322 asyncs [i]->sent = 0; 2384 asyncs [i]->sent = 0;
2385 ECB_MEMORY_FENCE_RELEASE;
1323 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2386 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1324 } 2387 }
1325 } 2388 }
1326#endif 2389#endif
1327} 2390}
1328 2391
1329/*****************************************************************************/ 2392/*****************************************************************************/
1330 2393
2394void
2395ev_feed_signal (int signum) EV_THROW
2396{
2397#if EV_MULTIPLICITY
2398 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE;
2400 EV_A = signals [signum - 1].loop;
2401
2402 if (!EV_A)
2403 return;
2404#endif
2405
2406 signals [signum - 1].pending = 1;
2407 evpipe_write (EV_A_ &sig_pending);
2408}
2409
1331static void 2410static void
1332ev_sighandler (int signum) 2411ev_sighandler (int signum)
1333{ 2412{
1334#if EV_MULTIPLICITY
1335 EV_P = signals [signum - 1].loop;
1336#endif
1337
1338#ifdef _WIN32 2413#ifdef _WIN32
1339 signal (signum, ev_sighandler); 2414 signal (signum, ev_sighandler);
1340#endif 2415#endif
1341 2416
1342 signals [signum - 1].pending = 1; 2417 ev_feed_signal (signum);
1343 evpipe_write (EV_A_ &sig_pending);
1344} 2418}
1345 2419
1346void noinline 2420void noinline
1347ev_feed_signal_event (EV_P_ int signum) 2421ev_feed_signal_event (EV_P_ int signum) EV_THROW
1348{ 2422{
1349 WL w; 2423 WL w;
1350 2424
1351 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2425 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1352 return; 2426 return;
1353 2427
1354 --signum; 2428 --signum;
1355 2429
1356#if EV_MULTIPLICITY 2430#if EV_MULTIPLICITY
… …
1360 if (expect_false (signals [signum].loop != EV_A)) 2434 if (expect_false (signals [signum].loop != EV_A))
1361 return; 2435 return;
1362#endif 2436#endif
1363 2437
1364 signals [signum].pending = 0; 2438 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE;
1365 2440
1366 for (w = signals [signum].head; w; w = w->next) 2441 for (w = signals [signum].head; w; w = w->next)
1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2442 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1368} 2443}
1369 2444
… …
1448 2523
1449#endif 2524#endif
1450 2525
1451/*****************************************************************************/ 2526/*****************************************************************************/
1452 2527
2528#if EV_USE_IOCP
2529# include "ev_iocp.c"
2530#endif
1453#if EV_USE_PORT 2531#if EV_USE_PORT
1454# include "ev_port.c" 2532# include "ev_port.c"
1455#endif 2533#endif
1456#if EV_USE_KQUEUE 2534#if EV_USE_KQUEUE
1457# include "ev_kqueue.c" 2535# include "ev_kqueue.c"
… …
1464#endif 2542#endif
1465#if EV_USE_SELECT 2543#if EV_USE_SELECT
1466# include "ev_select.c" 2544# include "ev_select.c"
1467#endif 2545#endif
1468 2546
1469int 2547int ecb_cold
1470ev_version_major (void) 2548ev_version_major (void) EV_THROW
1471{ 2549{
1472 return EV_VERSION_MAJOR; 2550 return EV_VERSION_MAJOR;
1473} 2551}
1474 2552
1475int 2553int ecb_cold
1476ev_version_minor (void) 2554ev_version_minor (void) EV_THROW
1477{ 2555{
1478 return EV_VERSION_MINOR; 2556 return EV_VERSION_MINOR;
1479} 2557}
1480 2558
1481/* return true if we are running with elevated privileges and should ignore env variables */ 2559/* return true if we are running with elevated privileges and should ignore env variables */
1482int inline_size 2560int inline_size ecb_cold
1483enable_secure (void) 2561enable_secure (void)
1484{ 2562{
1485#ifdef _WIN32 2563#ifdef _WIN32
1486 return 0; 2564 return 0;
1487#else 2565#else
1488 return getuid () != geteuid () 2566 return getuid () != geteuid ()
1489 || getgid () != getegid (); 2567 || getgid () != getegid ();
1490#endif 2568#endif
1491} 2569}
1492 2570
1493unsigned int 2571unsigned int ecb_cold
1494ev_supported_backends (void) 2572ev_supported_backends (void) EV_THROW
1495{ 2573{
1496 unsigned int flags = 0; 2574 unsigned int flags = 0;
1497 2575
1498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1502 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1503 2581
1504 return flags; 2582 return flags;
1505} 2583}
1506 2584
1507unsigned int 2585unsigned int ecb_cold
1508ev_recommended_backends (void) 2586ev_recommended_backends (void) EV_THROW
1509{ 2587{
1510 unsigned int flags = ev_supported_backends (); 2588 unsigned int flags = ev_supported_backends ();
1511 2589
1512#ifndef __NetBSD__ 2590#ifndef __NetBSD__
1513 /* kqueue is borked on everything but netbsd apparently */ 2591 /* kqueue is borked on everything but netbsd apparently */
… …
1524#endif 2602#endif
1525 2603
1526 return flags; 2604 return flags;
1527} 2605}
1528 2606
2607unsigned int ecb_cold
2608ev_embeddable_backends (void) EV_THROW
2609{
2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2611
2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2614 flags &= ~EVBACKEND_EPOLL;
2615
2616 return flags;
2617}
2618
1529unsigned int 2619unsigned int
1530ev_embeddable_backends (void)
1531{
1532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1533
1534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1535 /* please fix it and tell me how to detect the fix */
1536 flags &= ~EVBACKEND_EPOLL;
1537
1538 return flags;
1539}
1540
1541unsigned int
1542ev_backend (EV_P) 2620ev_backend (EV_P) EV_THROW
1543{ 2621{
1544 return backend; 2622 return backend;
1545} 2623}
1546 2624
1547#if EV_FEATURE_API 2625#if EV_FEATURE_API
1548unsigned int 2626unsigned int
1549ev_iteration (EV_P) 2627ev_iteration (EV_P) EV_THROW
1550{ 2628{
1551 return loop_count; 2629 return loop_count;
1552} 2630}
1553 2631
1554unsigned int 2632unsigned int
1555ev_depth (EV_P) 2633ev_depth (EV_P) EV_THROW
1556{ 2634{
1557 return loop_depth; 2635 return loop_depth;
1558} 2636}
1559 2637
1560void 2638void
1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1562{ 2640{
1563 io_blocktime = interval; 2641 io_blocktime = interval;
1564} 2642}
1565 2643
1566void 2644void
1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1568{ 2646{
1569 timeout_blocktime = interval; 2647 timeout_blocktime = interval;
1570} 2648}
1571 2649
1572void 2650void
1573ev_set_userdata (EV_P_ void *data) 2651ev_set_userdata (EV_P_ void *data) EV_THROW
1574{ 2652{
1575 userdata = data; 2653 userdata = data;
1576} 2654}
1577 2655
1578void * 2656void *
1579ev_userdata (EV_P) 2657ev_userdata (EV_P) EV_THROW
1580{ 2658{
1581 return userdata; 2659 return userdata;
1582} 2660}
1583 2661
2662void
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2663ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1585{ 2664{
1586 invoke_cb = invoke_pending_cb; 2665 invoke_cb = invoke_pending_cb;
1587} 2666}
1588 2667
2668void
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2669ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1590{ 2670{
1591 release_cb = release; 2671 release_cb = release;
1592 acquire_cb = acquire; 2672 acquire_cb = acquire;
1593} 2673}
1594#endif 2674#endif
1595 2675
1596/* initialise a loop structure, must be zero-initialised */ 2676/* initialise a loop structure, must be zero-initialised */
1597static void noinline 2677static void noinline ecb_cold
1598loop_init (EV_P_ unsigned int flags) 2678loop_init (EV_P_ unsigned int flags) EV_THROW
1599{ 2679{
1600 if (!backend) 2680 if (!backend)
1601 { 2681 {
2682 origflags = flags;
2683
1602#if EV_USE_REALTIME 2684#if EV_USE_REALTIME
1603 if (!have_realtime) 2685 if (!have_realtime)
1604 { 2686 {
1605 struct timespec ts; 2687 struct timespec ts;
1606 2688
… …
1628 if (!(flags & EVFLAG_NOENV) 2710 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure () 2711 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS")) 2712 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS")); 2713 flags = atoi (getenv ("LIBEV_FLAGS"));
1632 2714
1633 ev_rt_now = ev_time (); 2715 ev_rt_now = ev_time ();
1634 mn_now = get_clock (); 2716 mn_now = get_clock ();
1635 now_floor = mn_now; 2717 now_floor = mn_now;
1636 rtmn_diff = ev_rt_now - mn_now; 2718 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API 2719#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending; 2720 invoke_cb = ev_invoke_pending;
1639#endif 2721#endif
1640 2722
1641 io_blocktime = 0.; 2723 io_blocktime = 0.;
1642 timeout_blocktime = 0.; 2724 timeout_blocktime = 0.;
1643 backend = 0; 2725 backend = 0;
1644 backend_fd = -1; 2726 backend_fd = -1;
1645 sig_pending = 0; 2727 sig_pending = 0;
1646#if EV_ASYNC_ENABLE 2728#if EV_ASYNC_ENABLE
1647 async_pending = 0; 2729 async_pending = 0;
1648#endif 2730#endif
2731 pipe_write_skipped = 0;
2732 pipe_write_wanted = 0;
2733 evpipe [0] = -1;
2734 evpipe [1] = -1;
1649#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1651#endif 2737#endif
1652#if EV_USE_SIGNALFD 2738#if EV_USE_SIGNALFD
1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1654#endif 2740#endif
1655 2741
1656 if (!(flags & 0x0000ffffU)) 2742 if (!(flags & EVBACKEND_MASK))
1657 flags |= ev_recommended_backends (); 2743 flags |= ev_recommended_backends ();
1658 2744
2745#if EV_USE_IOCP
2746 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2747#endif
1659#if EV_USE_PORT 2748#if EV_USE_PORT
1660 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2749 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1661#endif 2750#endif
1662#if EV_USE_KQUEUE 2751#if EV_USE_KQUEUE
1663 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2752 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1680#endif 2769#endif
1681 } 2770 }
1682} 2771}
1683 2772
1684/* free up a loop structure */ 2773/* free up a loop structure */
1685static void noinline 2774void ecb_cold
1686loop_destroy (EV_P) 2775ev_loop_destroy (EV_P)
1687{ 2776{
1688 int i; 2777 int i;
2778
2779#if EV_MULTIPLICITY
2780 /* mimic free (0) */
2781 if (!EV_A)
2782 return;
2783#endif
2784
2785#if EV_CLEANUP_ENABLE
2786 /* queue cleanup watchers (and execute them) */
2787 if (expect_false (cleanupcnt))
2788 {
2789 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2790 EV_INVOKE_PENDING;
2791 }
2792#endif
2793
2794#if EV_CHILD_ENABLE
2795 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2796 {
2797 ev_ref (EV_A); /* child watcher */
2798 ev_signal_stop (EV_A_ &childev);
2799 }
2800#endif
1689 2801
1690 if (ev_is_active (&pipe_w)) 2802 if (ev_is_active (&pipe_w))
1691 { 2803 {
1692 /*ev_ref (EV_A);*/ 2804 /*ev_ref (EV_A);*/
1693 /*ev_io_stop (EV_A_ &pipe_w);*/ 2805 /*ev_io_stop (EV_A_ &pipe_w);*/
1694 2806
1695#if EV_USE_EVENTFD
1696 if (evfd >= 0)
1697 close (evfd);
1698#endif
1699
1700 if (evpipe [0] >= 0)
1701 {
1702 EV_WIN32_CLOSE_FD (evpipe [0]); 2807 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1703 EV_WIN32_CLOSE_FD (evpipe [1]); 2808 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1704 }
1705 } 2809 }
1706 2810
1707#if EV_USE_SIGNALFD 2811#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w)) 2812 if (ev_is_active (&sigfd_w))
1709 close (sigfd); 2813 close (sigfd);
… …
1715#endif 2819#endif
1716 2820
1717 if (backend_fd >= 0) 2821 if (backend_fd >= 0)
1718 close (backend_fd); 2822 close (backend_fd);
1719 2823
2824#if EV_USE_IOCP
2825 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2826#endif
1720#if EV_USE_PORT 2827#if EV_USE_PORT
1721 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2828 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1722#endif 2829#endif
1723#if EV_USE_KQUEUE 2830#if EV_USE_KQUEUE
1724 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2831 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1751 array_free (periodic, EMPTY); 2858 array_free (periodic, EMPTY);
1752#endif 2859#endif
1753#if EV_FORK_ENABLE 2860#if EV_FORK_ENABLE
1754 array_free (fork, EMPTY); 2861 array_free (fork, EMPTY);
1755#endif 2862#endif
2863#if EV_CLEANUP_ENABLE
2864 array_free (cleanup, EMPTY);
2865#endif
1756 array_free (prepare, EMPTY); 2866 array_free (prepare, EMPTY);
1757 array_free (check, EMPTY); 2867 array_free (check, EMPTY);
1758#if EV_ASYNC_ENABLE 2868#if EV_ASYNC_ENABLE
1759 array_free (async, EMPTY); 2869 array_free (async, EMPTY);
1760#endif 2870#endif
1761 2871
1762 backend = 0; 2872 backend = 0;
2873
2874#if EV_MULTIPLICITY
2875 if (ev_is_default_loop (EV_A))
2876#endif
2877 ev_default_loop_ptr = 0;
2878#if EV_MULTIPLICITY
2879 else
2880 ev_free (EV_A);
2881#endif
1763} 2882}
1764 2883
1765#if EV_USE_INOTIFY 2884#if EV_USE_INOTIFY
1766inline_size void infy_fork (EV_P); 2885inline_size void infy_fork (EV_P);
1767#endif 2886#endif
… …
1780#endif 2899#endif
1781#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1782 infy_fork (EV_A); 2901 infy_fork (EV_A);
1783#endif 2902#endif
1784 2903
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1785 if (ev_is_active (&pipe_w)) 2905 if (ev_is_active (&pipe_w))
1786 { 2906 {
1787 /* this "locks" the handlers against writing to the pipe */ 2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1788 /* while we modify the fd vars */
1789 sig_pending = 1;
1790#if EV_ASYNC_ENABLE
1791 async_pending = 1;
1792#endif
1793 2908
1794 ev_ref (EV_A); 2909 ev_ref (EV_A);
1795 ev_io_stop (EV_A_ &pipe_w); 2910 ev_io_stop (EV_A_ &pipe_w);
1796 2911
1797#if EV_USE_EVENTFD
1798 if (evfd >= 0)
1799 close (evfd);
1800#endif
1801
1802 if (evpipe [0] >= 0) 2912 if (evpipe [0] >= 0)
1803 {
1804 EV_WIN32_CLOSE_FD (evpipe [0]); 2913 EV_WIN32_CLOSE_FD (evpipe [0]);
1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1806 }
1807 2914
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1809 evpipe_init (EV_A); 2915 evpipe_init (EV_A);
1810 /* now iterate over everything, in case we missed something */ 2916 /* iterate over everything, in case we missed something before */
1811 pipecb (EV_A_ &pipe_w, EV_READ); 2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1812#endif
1813 } 2918 }
2919#endif
1814 2920
1815 postfork = 0; 2921 postfork = 0;
1816} 2922}
1817 2923
1818#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
1819 2925
1820struct ev_loop * 2926struct ev_loop * ecb_cold
1821ev_loop_new (unsigned int flags) 2927ev_loop_new (unsigned int flags) EV_THROW
1822{ 2928{
1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1824 2930
1825 memset (EV_A, 0, sizeof (struct ev_loop)); 2931 memset (EV_A, 0, sizeof (struct ev_loop));
1826 loop_init (EV_A_ flags); 2932 loop_init (EV_A_ flags);
1827 2933
1828 if (ev_backend (EV_A)) 2934 if (ev_backend (EV_A))
1829 return EV_A; 2935 return EV_A;
1830 2936
2937 ev_free (EV_A);
1831 return 0; 2938 return 0;
1832} 2939}
1833 2940
1834void
1835ev_loop_destroy (EV_P)
1836{
1837 loop_destroy (EV_A);
1838 ev_free (loop);
1839}
1840
1841void
1842ev_loop_fork (EV_P)
1843{
1844 postfork = 1; /* must be in line with ev_default_fork */
1845}
1846#endif /* multiplicity */ 2941#endif /* multiplicity */
1847 2942
1848#if EV_VERIFY 2943#if EV_VERIFY
1849static void noinline 2944static void noinline ecb_cold
1850verify_watcher (EV_P_ W w) 2945verify_watcher (EV_P_ W w)
1851{ 2946{
1852 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1853 2948
1854 if (w->pending) 2949 if (w->pending)
1855 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1856} 2951}
1857 2952
1858static void noinline 2953static void noinline ecb_cold
1859verify_heap (EV_P_ ANHE *heap, int N) 2954verify_heap (EV_P_ ANHE *heap, int N)
1860{ 2955{
1861 int i; 2956 int i;
1862 2957
1863 for (i = HEAP0; i < N + HEAP0; ++i) 2958 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1868 2963
1869 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1870 } 2965 }
1871} 2966}
1872 2967
1873static void noinline 2968static void noinline ecb_cold
1874array_verify (EV_P_ W *ws, int cnt) 2969array_verify (EV_P_ W *ws, int cnt)
1875{ 2970{
1876 while (cnt--) 2971 while (cnt--)
1877 { 2972 {
1878 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1880 } 2975 }
1881} 2976}
1882#endif 2977#endif
1883 2978
1884#if EV_FEATURE_API 2979#if EV_FEATURE_API
1885void 2980void ecb_cold
1886ev_verify (EV_P) 2981ev_verify (EV_P) EV_THROW
1887{ 2982{
1888#if EV_VERIFY 2983#if EV_VERIFY
1889 int i; 2984 int i;
1890 WL w; 2985 WL w, w2;
1891 2986
1892 assert (activecnt >= -1); 2987 assert (activecnt >= -1);
1893 2988
1894 assert (fdchangemax >= fdchangecnt); 2989 assert (fdchangemax >= fdchangecnt);
1895 for (i = 0; i < fdchangecnt; ++i) 2990 for (i = 0; i < fdchangecnt; ++i)
1896 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1897 2992
1898 assert (anfdmax >= 0); 2993 assert (anfdmax >= 0);
1899 for (i = 0; i < anfdmax; ++i) 2994 for (i = 0; i < anfdmax; ++i)
2995 {
2996 int j = 0;
2997
1900 for (w = anfds [i].head; w; w = w->next) 2998 for (w = w2 = anfds [i].head; w; w = w->next)
1901 { 2999 {
1902 verify_watcher (EV_A_ (W)w); 3000 verify_watcher (EV_A_ (W)w);
3001
3002 if (j++ & 1)
3003 {
3004 assert (("libev: io watcher list contains a loop", w != w2));
3005 w2 = w2->next;
3006 }
3007
1903 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3008 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1904 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3009 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1905 } 3010 }
3011 }
1906 3012
1907 assert (timermax >= timercnt); 3013 assert (timermax >= timercnt);
1908 verify_heap (EV_A_ timers, timercnt); 3014 verify_heap (EV_A_ timers, timercnt);
1909 3015
1910#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
… …
1925#if EV_FORK_ENABLE 3031#if EV_FORK_ENABLE
1926 assert (forkmax >= forkcnt); 3032 assert (forkmax >= forkcnt);
1927 array_verify (EV_A_ (W *)forks, forkcnt); 3033 array_verify (EV_A_ (W *)forks, forkcnt);
1928#endif 3034#endif
1929 3035
3036#if EV_CLEANUP_ENABLE
3037 assert (cleanupmax >= cleanupcnt);
3038 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3039#endif
3040
1930#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1931 assert (asyncmax >= asynccnt); 3042 assert (asyncmax >= asynccnt);
1932 array_verify (EV_A_ (W *)asyncs, asynccnt); 3043 array_verify (EV_A_ (W *)asyncs, asynccnt);
1933#endif 3044#endif
1934 3045
… …
1951#endif 3062#endif
1952} 3063}
1953#endif 3064#endif
1954 3065
1955#if EV_MULTIPLICITY 3066#if EV_MULTIPLICITY
1956struct ev_loop * 3067struct ev_loop * ecb_cold
1957ev_default_loop_init (unsigned int flags)
1958#else 3068#else
1959int 3069int
3070#endif
1960ev_default_loop (unsigned int flags) 3071ev_default_loop (unsigned int flags) EV_THROW
1961#endif
1962{ 3072{
1963 if (!ev_default_loop_ptr) 3073 if (!ev_default_loop_ptr)
1964 { 3074 {
1965#if EV_MULTIPLICITY 3075#if EV_MULTIPLICITY
1966 EV_P = ev_default_loop_ptr = &default_loop_struct; 3076 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1985 3095
1986 return ev_default_loop_ptr; 3096 return ev_default_loop_ptr;
1987} 3097}
1988 3098
1989void 3099void
1990ev_default_destroy (void) 3100ev_loop_fork (EV_P) EV_THROW
1991{ 3101{
1992#if EV_MULTIPLICITY 3102 postfork = 1;
1993 EV_P = ev_default_loop_ptr;
1994#endif
1995
1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1999 ev_ref (EV_A); /* child watcher */
2000 ev_signal_stop (EV_A_ &childev);
2001#endif
2002
2003 loop_destroy (EV_A);
2004}
2005
2006void
2007ev_default_fork (void)
2008{
2009#if EV_MULTIPLICITY
2010 EV_P = ev_default_loop_ptr;
2011#endif
2012
2013 postfork = 1; /* must be in line with ev_loop_fork */
2014} 3103}
2015 3104
2016/*****************************************************************************/ 3105/*****************************************************************************/
2017 3106
2018void 3107void
… …
2020{ 3109{
2021 EV_CB_INVOKE ((W)w, revents); 3110 EV_CB_INVOKE ((W)w, revents);
2022} 3111}
2023 3112
2024unsigned int 3113unsigned int
2025ev_pending_count (EV_P) 3114ev_pending_count (EV_P) EV_THROW
2026{ 3115{
2027 int pri; 3116 int pri;
2028 unsigned int count = 0; 3117 unsigned int count = 0;
2029 3118
2030 for (pri = NUMPRI; pri--; ) 3119 for (pri = NUMPRI; pri--; )
… …
2034} 3123}
2035 3124
2036void noinline 3125void noinline
2037ev_invoke_pending (EV_P) 3126ev_invoke_pending (EV_P)
2038{ 3127{
2039 int pri; 3128 pendingpri = NUMPRI;
2040 3129
2041 for (pri = NUMPRI; pri--; ) 3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3131 {
3132 --pendingpri;
3133
2042 while (pendingcnt [pri]) 3134 while (pendingcnt [pendingpri])
2043 { 3135 {
2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2045 3137
2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
2048
2049 p->w->pending = 0; 3138 p->w->pending = 0;
2050 EV_CB_INVOKE (p->w, p->events); 3139 EV_CB_INVOKE (p->w, p->events);
2051 EV_FREQUENT_CHECK; 3140 EV_FREQUENT_CHECK;
2052 } 3141 }
3142 }
2053} 3143}
2054 3144
2055#if EV_IDLE_ENABLE 3145#if EV_IDLE_ENABLE
2056/* make idle watchers pending. this handles the "call-idle */ 3146/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */ 3147/* only when higher priorities are idle" logic */
… …
2114 feed_reverse_done (EV_A_ EV_TIMER); 3204 feed_reverse_done (EV_A_ EV_TIMER);
2115 } 3205 }
2116} 3206}
2117 3207
2118#if EV_PERIODIC_ENABLE 3208#if EV_PERIODIC_ENABLE
3209
3210static void noinline
3211periodic_recalc (EV_P_ ev_periodic *w)
3212{
3213 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3214 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3215
3216 /* the above almost always errs on the low side */
3217 while (at <= ev_rt_now)
3218 {
3219 ev_tstamp nat = at + w->interval;
3220
3221 /* when resolution fails us, we use ev_rt_now */
3222 if (expect_false (nat == at))
3223 {
3224 at = ev_rt_now;
3225 break;
3226 }
3227
3228 at = nat;
3229 }
3230
3231 ev_at (w) = at;
3232}
3233
2119/* make periodics pending */ 3234/* make periodics pending */
2120inline_size void 3235inline_size void
2121periodics_reify (EV_P) 3236periodics_reify (EV_P)
2122{ 3237{
2123 EV_FREQUENT_CHECK; 3238 EV_FREQUENT_CHECK;
2124 3239
2125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2126 { 3241 {
2127 int feed_count = 0;
2128
2129 do 3242 do
2130 { 3243 {
2131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3244 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2132 3245
2133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3246 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2142 ANHE_at_cache (periodics [HEAP0]); 3255 ANHE_at_cache (periodics [HEAP0]);
2143 downheap (periodics, periodiccnt, HEAP0); 3256 downheap (periodics, periodiccnt, HEAP0);
2144 } 3257 }
2145 else if (w->interval) 3258 else if (w->interval)
2146 { 3259 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3260 periodic_recalc (EV_A_ w);
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]); 3261 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0); 3262 downheap (periodics, periodiccnt, HEAP0);
2163 } 3263 }
2164 else 3264 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3265 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2173 } 3273 }
2174} 3274}
2175 3275
2176/* simply recalculate all periodics */ 3276/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3277/* TODO: maybe ensure that at least one event happens when jumping forward? */
2178static void noinline 3278static void noinline ecb_cold
2179periodics_reschedule (EV_P) 3279periodics_reschedule (EV_P)
2180{ 3280{
2181 int i; 3281 int i;
2182 3282
2183 /* adjust periodics after time jump */ 3283 /* adjust periodics after time jump */
… …
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3286 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2187 3287
2188 if (w->reschedule_cb) 3288 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3289 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 3290 else if (w->interval)
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3291 periodic_recalc (EV_A_ w);
2192 3292
2193 ANHE_at_cache (periodics [i]); 3293 ANHE_at_cache (periodics [i]);
2194 } 3294 }
2195 3295
2196 reheap (periodics, periodiccnt); 3296 reheap (periodics, periodiccnt);
2197} 3297}
2198#endif 3298#endif
2199 3299
2200/* adjust all timers by a given offset */ 3300/* adjust all timers by a given offset */
2201static void noinline 3301static void noinline ecb_cold
2202timers_reschedule (EV_P_ ev_tstamp adjust) 3302timers_reschedule (EV_P_ ev_tstamp adjust)
2203{ 3303{
2204 int i; 3304 int i;
2205 3305
2206 for (i = 0; i < timercnt; ++i) 3306 for (i = 0; i < timercnt; ++i)
… …
2243 * doesn't hurt either as we only do this on time-jumps or 3343 * doesn't hurt either as we only do this on time-jumps or
2244 * in the unlikely event of having been preempted here. 3344 * in the unlikely event of having been preempted here.
2245 */ 3345 */
2246 for (i = 4; --i; ) 3346 for (i = 4; --i; )
2247 { 3347 {
3348 ev_tstamp diff;
2248 rtmn_diff = ev_rt_now - mn_now; 3349 rtmn_diff = ev_rt_now - mn_now;
2249 3350
3351 diff = odiff - rtmn_diff;
3352
2250 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3353 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2251 return; /* all is well */ 3354 return; /* all is well */
2252 3355
2253 ev_rt_now = ev_time (); 3356 ev_rt_now = ev_time ();
2254 mn_now = get_clock (); 3357 mn_now = get_clock ();
2255 now_floor = mn_now; 3358 now_floor = mn_now;
… …
2277 3380
2278 mn_now = ev_rt_now; 3381 mn_now = ev_rt_now;
2279 } 3382 }
2280} 3383}
2281 3384
2282void 3385int
2283ev_run (EV_P_ int flags) 3386ev_run (EV_P_ int flags)
2284{ 3387{
2285#if EV_FEATURE_API 3388#if EV_FEATURE_API
2286 ++loop_depth; 3389 ++loop_depth;
2287#endif 3390#endif
… …
2345 ev_tstamp prev_mn_now = mn_now; 3448 ev_tstamp prev_mn_now = mn_now;
2346 3449
2347 /* update time to cancel out callback processing overhead */ 3450 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100); 3451 time_update (EV_A_ 1e100);
2349 3452
3453 /* from now on, we want a pipe-wake-up */
3454 pipe_write_wanted = 1;
3455
3456 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3457
2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3458 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2351 { 3459 {
2352 waittime = MAX_BLOCKTIME; 3460 waittime = MAX_BLOCKTIME;
2353 3461
2354 if (timercnt) 3462 if (timercnt)
2355 { 3463 {
2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3464 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2357 if (waittime > to) waittime = to; 3465 if (waittime > to) waittime = to;
2358 } 3466 }
2359 3467
2360#if EV_PERIODIC_ENABLE 3468#if EV_PERIODIC_ENABLE
2361 if (periodiccnt) 3469 if (periodiccnt)
2362 { 3470 {
2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3471 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2364 if (waittime > to) waittime = to; 3472 if (waittime > to) waittime = to;
2365 } 3473 }
2366#endif 3474#endif
2367 3475
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3476 /* don't let timeouts decrease the waittime below timeout_blocktime */
2369 if (expect_false (waittime < timeout_blocktime)) 3477 if (expect_false (waittime < timeout_blocktime))
2370 waittime = timeout_blocktime; 3478 waittime = timeout_blocktime;
3479
3480 /* at this point, we NEED to wait, so we have to ensure */
3481 /* to pass a minimum nonzero value to the backend */
3482 if (expect_false (waittime < backend_mintime))
3483 waittime = backend_mintime;
2371 3484
2372 /* extra check because io_blocktime is commonly 0 */ 3485 /* extra check because io_blocktime is commonly 0 */
2373 if (expect_false (io_blocktime)) 3486 if (expect_false (io_blocktime))
2374 { 3487 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3488 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376 3489
2377 if (sleeptime > waittime - backend_fudge) 3490 if (sleeptime > waittime - backend_mintime)
2378 sleeptime = waittime - backend_fudge; 3491 sleeptime = waittime - backend_mintime;
2379 3492
2380 if (expect_true (sleeptime > 0.)) 3493 if (expect_true (sleeptime > 0.))
2381 { 3494 {
2382 ev_sleep (sleeptime); 3495 ev_sleep (sleeptime);
2383 waittime -= sleeptime; 3496 waittime -= sleeptime;
… …
2390#endif 3503#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3504 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2392 backend_poll (EV_A_ waittime); 3505 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3506 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2394 3507
3508 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3509
3510 ECB_MEMORY_FENCE_ACQUIRE;
3511 if (pipe_write_skipped)
3512 {
3513 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3514 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3515 }
3516
3517
2395 /* update ev_rt_now, do magic */ 3518 /* update ev_rt_now, do magic */
2396 time_update (EV_A_ waittime + sleeptime); 3519 time_update (EV_A_ waittime + sleeptime);
2397 } 3520 }
2398 3521
2399 /* queue pending timers and reschedule them */ 3522 /* queue pending timers and reschedule them */
… …
2425 loop_done = EVBREAK_CANCEL; 3548 loop_done = EVBREAK_CANCEL;
2426 3549
2427#if EV_FEATURE_API 3550#if EV_FEATURE_API
2428 --loop_depth; 3551 --loop_depth;
2429#endif 3552#endif
3553
3554 return activecnt;
2430} 3555}
2431 3556
2432void 3557void
2433ev_break (EV_P_ int how) 3558ev_break (EV_P_ int how) EV_THROW
2434{ 3559{
2435 loop_done = how; 3560 loop_done = how;
2436} 3561}
2437 3562
2438void 3563void
2439ev_ref (EV_P) 3564ev_ref (EV_P) EV_THROW
2440{ 3565{
2441 ++activecnt; 3566 ++activecnt;
2442} 3567}
2443 3568
2444void 3569void
2445ev_unref (EV_P) 3570ev_unref (EV_P) EV_THROW
2446{ 3571{
2447 --activecnt; 3572 --activecnt;
2448} 3573}
2449 3574
2450void 3575void
2451ev_now_update (EV_P) 3576ev_now_update (EV_P) EV_THROW
2452{ 3577{
2453 time_update (EV_A_ 1e100); 3578 time_update (EV_A_ 1e100);
2454} 3579}
2455 3580
2456void 3581void
2457ev_suspend (EV_P) 3582ev_suspend (EV_P) EV_THROW
2458{ 3583{
2459 ev_now_update (EV_A); 3584 ev_now_update (EV_A);
2460} 3585}
2461 3586
2462void 3587void
2463ev_resume (EV_P) 3588ev_resume (EV_P) EV_THROW
2464{ 3589{
2465 ev_tstamp mn_prev = mn_now; 3590 ev_tstamp mn_prev = mn_now;
2466 3591
2467 ev_now_update (EV_A); 3592 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev); 3593 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2507 w->pending = 0; 3632 w->pending = 0;
2508 } 3633 }
2509} 3634}
2510 3635
2511int 3636int
2512ev_clear_pending (EV_P_ void *w) 3637ev_clear_pending (EV_P_ void *w) EV_THROW
2513{ 3638{
2514 W w_ = (W)w; 3639 W w_ = (W)w;
2515 int pending = w_->pending; 3640 int pending = w_->pending;
2516 3641
2517 if (expect_true (pending)) 3642 if (expect_true (pending))
… …
2550} 3675}
2551 3676
2552/*****************************************************************************/ 3677/*****************************************************************************/
2553 3678
2554void noinline 3679void noinline
2555ev_io_start (EV_P_ ev_io *w) 3680ev_io_start (EV_P_ ev_io *w) EV_THROW
2556{ 3681{
2557 int fd = w->fd; 3682 int fd = w->fd;
2558 3683
2559 if (expect_false (ev_is_active (w))) 3684 if (expect_false (ev_is_active (w)))
2560 return; 3685 return;
… …
2566 3691
2567 ev_start (EV_A_ (W)w, 1); 3692 ev_start (EV_A_ (W)w, 1);
2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2569 wlist_add (&anfds[fd].head, (WL)w); 3694 wlist_add (&anfds[fd].head, (WL)w);
2570 3695
3696 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698
2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3699 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2572 w->events &= ~EV__IOFDSET; 3700 w->events &= ~EV__IOFDSET;
2573 3701
2574 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2575} 3703}
2576 3704
2577void noinline 3705void noinline
2578ev_io_stop (EV_P_ ev_io *w) 3706ev_io_stop (EV_P_ ev_io *w) EV_THROW
2579{ 3707{
2580 clear_pending (EV_A_ (W)w); 3708 clear_pending (EV_A_ (W)w);
2581 if (expect_false (!ev_is_active (w))) 3709 if (expect_false (!ev_is_active (w)))
2582 return; 3710 return;
2583 3711
… …
2592 3720
2593 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
2594} 3722}
2595 3723
2596void noinline 3724void noinline
2597ev_timer_start (EV_P_ ev_timer *w) 3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2598{ 3726{
2599 if (expect_false (ev_is_active (w))) 3727 if (expect_false (ev_is_active (w)))
2600 return; 3728 return;
2601 3729
2602 ev_at (w) += mn_now; 3730 ev_at (w) += mn_now;
… …
2616 3744
2617 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3745 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2618} 3746}
2619 3747
2620void noinline 3748void noinline
2621ev_timer_stop (EV_P_ ev_timer *w) 3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2622{ 3750{
2623 clear_pending (EV_A_ (W)w); 3751 clear_pending (EV_A_ (W)w);
2624 if (expect_false (!ev_is_active (w))) 3752 if (expect_false (!ev_is_active (w)))
2625 return; 3753 return;
2626 3754
… …
2646 3774
2647 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
2648} 3776}
2649 3777
2650void noinline 3778void noinline
2651ev_timer_again (EV_P_ ev_timer *w) 3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2652{ 3780{
2653 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
3782
3783 clear_pending (EV_A_ (W)w);
2654 3784
2655 if (ev_is_active (w)) 3785 if (ev_is_active (w))
2656 { 3786 {
2657 if (w->repeat) 3787 if (w->repeat)
2658 { 3788 {
… …
2671 3801
2672 EV_FREQUENT_CHECK; 3802 EV_FREQUENT_CHECK;
2673} 3803}
2674 3804
2675ev_tstamp 3805ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w) 3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2677{ 3807{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2679} 3809}
2680 3810
2681#if EV_PERIODIC_ENABLE 3811#if EV_PERIODIC_ENABLE
2682void noinline 3812void noinline
2683ev_periodic_start (EV_P_ ev_periodic *w) 3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2684{ 3814{
2685 if (expect_false (ev_is_active (w))) 3815 if (expect_false (ev_is_active (w)))
2686 return; 3816 return;
2687 3817
2688 if (w->reschedule_cb) 3818 if (w->reschedule_cb)
2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3819 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2690 else if (w->interval) 3820 else if (w->interval)
2691 { 3821 {
2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3822 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2693 /* this formula differs from the one in periodic_reify because we do not always round up */ 3823 periodic_recalc (EV_A_ w);
2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2695 } 3824 }
2696 else 3825 else
2697 ev_at (w) = w->offset; 3826 ev_at (w) = w->offset;
2698 3827
2699 EV_FREQUENT_CHECK; 3828 EV_FREQUENT_CHECK;
… …
2709 3838
2710 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3839 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2711} 3840}
2712 3841
2713void noinline 3842void noinline
2714ev_periodic_stop (EV_P_ ev_periodic *w) 3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2715{ 3844{
2716 clear_pending (EV_A_ (W)w); 3845 clear_pending (EV_A_ (W)w);
2717 if (expect_false (!ev_is_active (w))) 3846 if (expect_false (!ev_is_active (w)))
2718 return; 3847 return;
2719 3848
… …
2737 3866
2738 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2739} 3868}
2740 3869
2741void noinline 3870void noinline
2742ev_periodic_again (EV_P_ ev_periodic *w) 3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2743{ 3872{
2744 /* TODO: use adjustheap and recalculation */ 3873 /* TODO: use adjustheap and recalculation */
2745 ev_periodic_stop (EV_A_ w); 3874 ev_periodic_stop (EV_A_ w);
2746 ev_periodic_start (EV_A_ w); 3875 ev_periodic_start (EV_A_ w);
2747} 3876}
… …
2752#endif 3881#endif
2753 3882
2754#if EV_SIGNAL_ENABLE 3883#if EV_SIGNAL_ENABLE
2755 3884
2756void noinline 3885void noinline
2757ev_signal_start (EV_P_ ev_signal *w) 3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2758{ 3887{
2759 if (expect_false (ev_is_active (w))) 3888 if (expect_false (ev_is_active (w)))
2760 return; 3889 return;
2761 3890
2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3891 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2764#if EV_MULTIPLICITY 3893#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops", 3894 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3895 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2767 3896
2768 signals [w->signum - 1].loop = EV_A; 3897 signals [w->signum - 1].loop = EV_A;
3898 ECB_MEMORY_FENCE_RELEASE;
2769#endif 3899#endif
2770 3900
2771 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2772 3902
2773#if EV_USE_SIGNALFD 3903#if EV_USE_SIGNALFD
… …
2820 sa.sa_handler = ev_sighandler; 3950 sa.sa_handler = ev_sighandler;
2821 sigfillset (&sa.sa_mask); 3951 sigfillset (&sa.sa_mask);
2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3952 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2823 sigaction (w->signum, &sa, 0); 3953 sigaction (w->signum, &sa, 0);
2824 3954
3955 if (origflags & EVFLAG_NOSIGMASK)
3956 {
2825 sigemptyset (&sa.sa_mask); 3957 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum); 3958 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3959 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3960 }
2828#endif 3961#endif
2829 } 3962 }
2830 3963
2831 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
2832} 3965}
2833 3966
2834void noinline 3967void noinline
2835ev_signal_stop (EV_P_ ev_signal *w) 3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2836{ 3969{
2837 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
2838 if (expect_false (!ev_is_active (w))) 3971 if (expect_false (!ev_is_active (w)))
2839 return; 3972 return;
2840 3973
… …
2871#endif 4004#endif
2872 4005
2873#if EV_CHILD_ENABLE 4006#if EV_CHILD_ENABLE
2874 4007
2875void 4008void
2876ev_child_start (EV_P_ ev_child *w) 4009ev_child_start (EV_P_ ev_child *w) EV_THROW
2877{ 4010{
2878#if EV_MULTIPLICITY 4011#if EV_MULTIPLICITY
2879 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4012 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2880#endif 4013#endif
2881 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
… …
2888 4021
2889 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
2890} 4023}
2891 4024
2892void 4025void
2893ev_child_stop (EV_P_ ev_child *w) 4026ev_child_stop (EV_P_ ev_child *w) EV_THROW
2894{ 4027{
2895 clear_pending (EV_A_ (W)w); 4028 clear_pending (EV_A_ (W)w);
2896 if (expect_false (!ev_is_active (w))) 4029 if (expect_false (!ev_is_active (w)))
2897 return; 4030 return;
2898 4031
… …
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2926 4059
2927static void noinline 4060static void noinline
2928infy_add (EV_P_ ev_stat *w) 4061infy_add (EV_P_ ev_stat *w)
2929{ 4062{
2930 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4063 w->wd = inotify_add_watch (fs_fd, w->path,
4064 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4065 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4066 | IN_DONT_FOLLOW | IN_MASK_ADD);
2931 4067
2932 if (w->wd >= 0) 4068 if (w->wd >= 0)
2933 { 4069 {
2934 struct statfs sfs; 4070 struct statfs sfs;
2935 4071
… …
2939 4075
2940 if (!fs_2625) 4076 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4077 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs) 4078 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */ 4079 && (sfs.f_type == 0x1373 /* devfs */
4080 || sfs.f_type == 0x4006 /* fat */
4081 || sfs.f_type == 0x4d44 /* msdos */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */ 4082 || sfs.f_type == 0xEF53 /* ext2/3 */
4083 || sfs.f_type == 0x72b6 /* jffs2 */
4084 || sfs.f_type == 0x858458f6 /* ramfs */
4085 || sfs.f_type == 0x5346544e /* ntfs */
2945 || sfs.f_type == 0x3153464a /* jfs */ 4086 || sfs.f_type == 0x3153464a /* jfs */
4087 || sfs.f_type == 0x9123683e /* btrfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */ 4088 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */ 4089 || sfs.f_type == 0x01021994 /* tmpfs */
2948 || sfs.f_type == 0x58465342 /* xfs */)) 4090 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4091 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else 4092 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4093 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2952 } 4094 }
… …
2973 if (!pend || pend == path) 4115 if (!pend || pend == path)
2974 break; 4116 break;
2975 4117
2976 *pend = 0; 4118 *pend = 0;
2977 w->wd = inotify_add_watch (fs_fd, path, mask); 4119 w->wd = inotify_add_watch (fs_fd, path, mask);
2978 } 4120 }
2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4121 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2980 } 4122 }
2981 } 4123 }
2982 4124
2983 if (w->wd >= 0) 4125 if (w->wd >= 0)
… …
3050 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4192 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len; 4193 ofs += sizeof (struct inotify_event) + ev->len;
3052 } 4194 }
3053} 4195}
3054 4196
3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085}
3086
3087inline_size void 4197inline_size void ecb_cold
3088ev_check_2625 (EV_P) 4198ev_check_2625 (EV_P)
3089{ 4199{
3090 /* kernels < 2.6.25 are borked 4200 /* kernels < 2.6.25 are borked
3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4201 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3092 */ 4202 */
… …
3097} 4207}
3098 4208
3099inline_size int 4209inline_size int
3100infy_newfd (void) 4210infy_newfd (void)
3101{ 4211{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4212#if defined IN_CLOEXEC && defined IN_NONBLOCK
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4213 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0) 4214 if (fd >= 0)
3105 return fd; 4215 return fd;
3106#endif 4216#endif
3107 return inotify_init (); 4217 return inotify_init ();
… …
3182#else 4292#else
3183# define EV_LSTAT(p,b) lstat (p, b) 4293# define EV_LSTAT(p,b) lstat (p, b)
3184#endif 4294#endif
3185 4295
3186void 4296void
3187ev_stat_stat (EV_P_ ev_stat *w) 4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3188{ 4298{
3189 if (lstat (w->path, &w->attr) < 0) 4299 if (lstat (w->path, &w->attr) < 0)
3190 w->attr.st_nlink = 0; 4300 w->attr.st_nlink = 0;
3191 else if (!w->attr.st_nlink) 4301 else if (!w->attr.st_nlink)
3192 w->attr.st_nlink = 1; 4302 w->attr.st_nlink = 1;
… …
3231 ev_feed_event (EV_A_ w, EV_STAT); 4341 ev_feed_event (EV_A_ w, EV_STAT);
3232 } 4342 }
3233} 4343}
3234 4344
3235void 4345void
3236ev_stat_start (EV_P_ ev_stat *w) 4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3237{ 4347{
3238 if (expect_false (ev_is_active (w))) 4348 if (expect_false (ev_is_active (w)))
3239 return; 4349 return;
3240 4350
3241 ev_stat_stat (EV_A_ w); 4351 ev_stat_stat (EV_A_ w);
… …
3262 4372
3263 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3264} 4374}
3265 4375
3266void 4376void
3267ev_stat_stop (EV_P_ ev_stat *w) 4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3268{ 4378{
3269 clear_pending (EV_A_ (W)w); 4379 clear_pending (EV_A_ (W)w);
3270 if (expect_false (!ev_is_active (w))) 4380 if (expect_false (!ev_is_active (w)))
3271 return; 4381 return;
3272 4382
… …
3288} 4398}
3289#endif 4399#endif
3290 4400
3291#if EV_IDLE_ENABLE 4401#if EV_IDLE_ENABLE
3292void 4402void
3293ev_idle_start (EV_P_ ev_idle *w) 4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3294{ 4404{
3295 if (expect_false (ev_is_active (w))) 4405 if (expect_false (ev_is_active (w)))
3296 return; 4406 return;
3297 4407
3298 pri_adjust (EV_A_ (W)w); 4408 pri_adjust (EV_A_ (W)w);
… …
3311 4421
3312 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3313} 4423}
3314 4424
3315void 4425void
3316ev_idle_stop (EV_P_ ev_idle *w) 4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3317{ 4427{
3318 clear_pending (EV_A_ (W)w); 4428 clear_pending (EV_A_ (W)w);
3319 if (expect_false (!ev_is_active (w))) 4429 if (expect_false (!ev_is_active (w)))
3320 return; 4430 return;
3321 4431
… …
3335} 4445}
3336#endif 4446#endif
3337 4447
3338#if EV_PREPARE_ENABLE 4448#if EV_PREPARE_ENABLE
3339void 4449void
3340ev_prepare_start (EV_P_ ev_prepare *w) 4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3341{ 4451{
3342 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
3343 return; 4453 return;
3344 4454
3345 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
… …
3350 4460
3351 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
3352} 4462}
3353 4463
3354void 4464void
3355ev_prepare_stop (EV_P_ ev_prepare *w) 4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3356{ 4466{
3357 clear_pending (EV_A_ (W)w); 4467 clear_pending (EV_A_ (W)w);
3358 if (expect_false (!ev_is_active (w))) 4468 if (expect_false (!ev_is_active (w)))
3359 return; 4469 return;
3360 4470
… …
3373} 4483}
3374#endif 4484#endif
3375 4485
3376#if EV_CHECK_ENABLE 4486#if EV_CHECK_ENABLE
3377void 4487void
3378ev_check_start (EV_P_ ev_check *w) 4488ev_check_start (EV_P_ ev_check *w) EV_THROW
3379{ 4489{
3380 if (expect_false (ev_is_active (w))) 4490 if (expect_false (ev_is_active (w)))
3381 return; 4491 return;
3382 4492
3383 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
… …
3388 4498
3389 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3390} 4500}
3391 4501
3392void 4502void
3393ev_check_stop (EV_P_ ev_check *w) 4503ev_check_stop (EV_P_ ev_check *w) EV_THROW
3394{ 4504{
3395 clear_pending (EV_A_ (W)w); 4505 clear_pending (EV_A_ (W)w);
3396 if (expect_false (!ev_is_active (w))) 4506 if (expect_false (!ev_is_active (w)))
3397 return; 4507 return;
3398 4508
… …
3411} 4521}
3412#endif 4522#endif
3413 4523
3414#if EV_EMBED_ENABLE 4524#if EV_EMBED_ENABLE
3415void noinline 4525void noinline
3416ev_embed_sweep (EV_P_ ev_embed *w) 4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3417{ 4527{
3418 ev_run (w->other, EVRUN_NOWAIT); 4528 ev_run (w->other, EVRUN_NOWAIT);
3419} 4529}
3420 4530
3421static void 4531static void
… …
3469 ev_idle_stop (EV_A_ idle); 4579 ev_idle_stop (EV_A_ idle);
3470} 4580}
3471#endif 4581#endif
3472 4582
3473void 4583void
3474ev_embed_start (EV_P_ ev_embed *w) 4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3475{ 4585{
3476 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3477 return; 4587 return;
3478 4588
3479 { 4589 {
… …
3500 4610
3501 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
3502} 4612}
3503 4613
3504void 4614void
3505ev_embed_stop (EV_P_ ev_embed *w) 4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3506{ 4616{
3507 clear_pending (EV_A_ (W)w); 4617 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4618 if (expect_false (!ev_is_active (w)))
3509 return; 4619 return;
3510 4620
… …
3520} 4630}
3521#endif 4631#endif
3522 4632
3523#if EV_FORK_ENABLE 4633#if EV_FORK_ENABLE
3524void 4634void
3525ev_fork_start (EV_P_ ev_fork *w) 4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3526{ 4636{
3527 if (expect_false (ev_is_active (w))) 4637 if (expect_false (ev_is_active (w)))
3528 return; 4638 return;
3529 4639
3530 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
… …
3535 4645
3536 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3537} 4647}
3538 4648
3539void 4649void
3540ev_fork_stop (EV_P_ ev_fork *w) 4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3541{ 4651{
3542 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3543 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3544 return; 4654 return;
3545 4655
… …
3556 4666
3557 EV_FREQUENT_CHECK; 4667 EV_FREQUENT_CHECK;
3558} 4668}
3559#endif 4669#endif
3560 4670
4671#if EV_CLEANUP_ENABLE
4672void
4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4674{
4675 if (expect_false (ev_is_active (w)))
4676 return;
4677
4678 EV_FREQUENT_CHECK;
4679
4680 ev_start (EV_A_ (W)w, ++cleanupcnt);
4681 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4682 cleanups [cleanupcnt - 1] = w;
4683
4684 /* cleanup watchers should never keep a refcount on the loop */
4685 ev_unref (EV_A);
4686 EV_FREQUENT_CHECK;
4687}
4688
4689void
4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4691{
4692 clear_pending (EV_A_ (W)w);
4693 if (expect_false (!ev_is_active (w)))
4694 return;
4695
4696 EV_FREQUENT_CHECK;
4697 ev_ref (EV_A);
4698
4699 {
4700 int active = ev_active (w);
4701
4702 cleanups [active - 1] = cleanups [--cleanupcnt];
4703 ev_active (cleanups [active - 1]) = active;
4704 }
4705
4706 ev_stop (EV_A_ (W)w);
4707
4708 EV_FREQUENT_CHECK;
4709}
4710#endif
4711
3561#if EV_ASYNC_ENABLE 4712#if EV_ASYNC_ENABLE
3562void 4713void
3563ev_async_start (EV_P_ ev_async *w) 4714ev_async_start (EV_P_ ev_async *w) EV_THROW
3564{ 4715{
3565 if (expect_false (ev_is_active (w))) 4716 if (expect_false (ev_is_active (w)))
3566 return; 4717 return;
3567 4718
3568 w->sent = 0; 4719 w->sent = 0;
… …
3577 4728
3578 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
3579} 4730}
3580 4731
3581void 4732void
3582ev_async_stop (EV_P_ ev_async *w) 4733ev_async_stop (EV_P_ ev_async *w) EV_THROW
3583{ 4734{
3584 clear_pending (EV_A_ (W)w); 4735 clear_pending (EV_A_ (W)w);
3585 if (expect_false (!ev_is_active (w))) 4736 if (expect_false (!ev_is_active (w)))
3586 return; 4737 return;
3587 4738
… …
3598 4749
3599 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3600} 4751}
3601 4752
3602void 4753void
3603ev_async_send (EV_P_ ev_async *w) 4754ev_async_send (EV_P_ ev_async *w) EV_THROW
3604{ 4755{
3605 w->sent = 1; 4756 w->sent = 1;
3606 evpipe_write (EV_A_ &async_pending); 4757 evpipe_write (EV_A_ &async_pending);
3607} 4758}
3608#endif 4759#endif
… …
3645 4796
3646 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4797 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3647} 4798}
3648 4799
3649void 4800void
3650ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4801ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3651{ 4802{
3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4803 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3653 4804
3654 if (expect_false (!once)) 4805 if (expect_false (!once))
3655 { 4806 {
… …
3676} 4827}
3677 4828
3678/*****************************************************************************/ 4829/*****************************************************************************/
3679 4830
3680#if EV_WALK_ENABLE 4831#if EV_WALK_ENABLE
3681void 4832void ecb_cold
3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4833ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3683{ 4834{
3684 int i, j; 4835 int i, j;
3685 ev_watcher_list *wl, *wn; 4836 ev_watcher_list *wl, *wn;
3686 4837
3687 if (types & (EV_IO | EV_EMBED)) 4838 if (types & (EV_IO | EV_EMBED))
… …
3730 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4881 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3731#endif 4882#endif
3732 4883
3733#if EV_IDLE_ENABLE 4884#if EV_IDLE_ENABLE
3734 if (types & EV_IDLE) 4885 if (types & EV_IDLE)
3735 for (j = NUMPRI; i--; ) 4886 for (j = NUMPRI; j--; )
3736 for (i = idlecnt [j]; i--; ) 4887 for (i = idlecnt [j]; i--; )
3737 cb (EV_A_ EV_IDLE, idles [j][i]); 4888 cb (EV_A_ EV_IDLE, idles [j][i]);
3738#endif 4889#endif
3739 4890
3740#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
… …
3793 4944
3794#if EV_MULTIPLICITY 4945#if EV_MULTIPLICITY
3795 #include "ev_wrap.h" 4946 #include "ev_wrap.h"
3796#endif 4947#endif
3797 4948
3798EV_CPP(})
3799

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