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Comparing libev/ev.c (file contents):
Revision 1.399 by root, Mon Sep 26 12:32:21 2011 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) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
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 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
183# include EV_H 183# include EV_H
184#else 184#else
185# include "ev.h" 185# include "ev.h"
186#endif 186#endif
187 187
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
198
188#ifndef _WIN32 199#ifndef _WIN32
189# include <sys/time.h> 200# include <sys/time.h>
190# include <sys/wait.h> 201# include <sys/wait.h>
191# include <unistd.h> 202# include <unistd.h>
192#else 203#else
193# include <io.h> 204# include <io.h>
194# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
195# include <windows.h> 207# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
198# endif 210# endif
199# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
208#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
209 221
210/* 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 */
211 223
212/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 225#if defined EV_NSIG
214/* use what's provided */ 226/* use what's provided */
215#elif defined (NSIG) 227#elif defined NSIG
216# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 229#elif defined _NSIG
218# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 231#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 233#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 237#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 239#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 243#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 245#else
234# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 247#endif
239 248
240#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
242#endif 251#endif
243 252
244#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 256# else
248# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
249# endif 258# endif
250#endif 259#endif
251 260
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
252#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 273# else
256# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
257# endif 275# endif
258#endif 276#endif
… …
345 363
346#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 366#endif
349 367
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
350/* 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, */
351/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 387# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
358# else 392# else
… …
361# endif 395# endif
362#endif 396#endif
363 397
364/* 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 */
365 399
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
375#endif 403#endif
376 404
… …
384# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
385#endif 413#endif
386 414
387#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
388/* hp-ux has it in sys/time.h, which we unconditionally include above */ 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux) 417# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 418# include <sys/select.h>
391# endif 419# endif
392#endif 420#endif
393 421
394#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
… …
397/* 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 */
398# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
401# endif 429# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 430#endif
407 431
408#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
409/* 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 */
410# include <stdint.h> 434# include <stdint.h>
… …
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
469/* 493/*
470 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
471 * 495 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 498 * All rights reserved.
475 * 499 *
476 * Redistribution and use in source and binary forms, with or without modifica- 500 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE. 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.
496 */ 531 */
497 532
498#ifndef ECB_H 533#ifndef ECB_H
499#define ECB_H 534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004
500 538
501#ifdef _WIN32 539#ifdef _WIN32
502 typedef signed char int8_t; 540 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 548 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 549 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 550 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 551 typedef unsigned __int64 uint64_t;
514 #endif 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
515#else 562#else
516 #include <inttypes.h> 563 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
517#endif 581#endif
518 582
519/* many compilers define _GNUC_ to some versions but then only implement 583/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 584 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 586 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have 587 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place. 588 * an issue with that they should have done it right in the first place.
525 */ 589 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
528 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
529 #else 592#else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
531 #endif 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
532#endif 632#endif
533 633
534/*****************************************************************************/ 634/*****************************************************************************/
535 635
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 638
539#if ECB_NO_THREADS || ECB_NO_SMP 639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 644 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 645#endif
542 646
543#ifndef ECB_MEMORY_FENCE 647#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386__ 649 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 651 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 652 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
549 #elif __amd64 653 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 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")
561 #endif 690 #endif
562 #endif 691 #endif
563#endif 692#endif
564 693
565#ifndef ECB_MEMORY_FENCE 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
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 707 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
567 #define ECB_MEMORY_FENCE __sync_synchronize () 708 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 709 #elif _MSC_VER >= 1500 /* VC++ 2008 */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 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()
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 715 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 717 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32) 720 #elif defined _WIN32
576 #include <WinNT.h> 721 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 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)
578 #endif 747 #endif
579#endif 748#endif
580 749
581#ifndef ECB_MEMORY_FENCE 750#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS 751 #if !ECB_AVOID_PTHREADS
… …
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 763 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 764 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif 765 #endif
597#endif 766#endif
598 767
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 768#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 769 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif 770#endif
602 771
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 772#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 773 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif 774#endif
606 775
607/*****************************************************************************/ 776/*****************************************************************************/
608 777
609#define ECB_C99 (__STDC_VERSION__ >= 199901L) 778#if ECB_CPP
610
611#if __cplusplus
612 #define ecb_inline static inline 779 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5) 780#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__ 781 #define ecb_inline static __inline__
615#elif ECB_C99 782#elif ECB_C99
616 #define ecb_inline static inline 783 #define ecb_inline static inline
… …
630 797
631#define ECB_CONCAT_(a, b) a ## b 798#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 799#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a 800#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 801#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
802#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
635 803
636#define ecb_function_ ecb_inline 804#define ecb_function_ ecb_inline
637 805
638#if ECB_GCC_VERSION(3,1) 806#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
639 #define ecb_attribute(attrlist) __attribute__(attrlist) 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)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr) 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)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 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)
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 829 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else 830#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality) 831 #define ecb_prefetch(addr,rw,locality)
648#endif 832#endif
649 833
650/* no emulation for ecb_decltype */ 834/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5) 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; };
652 #define ecb_decltype(x) __decltype(x) 838 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
653#elif ECB_GCC_VERSION(3,0) 839#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
654 #define ecb_decltype(x) __typeof(x) 840 #define ecb_decltype(x) __typeof__ (x)
655#endif 841#endif
656 842
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
657#define ecb_noinline ecb_attribute ((__noinline__)) 860 #define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__)) 861#endif
862
659#define ecb_unused ecb_attribute ((__unused__)) 863#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__)) 864#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__)) 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
662 878
663#if ECB_GCC_VERSION(4,3) 879#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__)) 880 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__)) 881 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__)) 882 #define ecb_cold ecb_attribute ((__cold__))
… …
678/* for compatibility to the rest of the world */ 894/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr) 895#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr) 896#define ecb_unlikely(expr) ecb_expect_false (expr)
681 897
682/* count trailing zero bits and count # of one bits */ 898/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4) 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))
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 903 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 904 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 905 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x) 906 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x) 907 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x) 908 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */ 909 /* no popcountll */
691#else 910#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
693 ecb_function_ int 912 ecb_function_ ecb_const int
694 ecb_ctz32 (uint32_t x) 913 ecb_ctz32 (uint32_t x)
695 { 914 {
696 int r = 0; 915 int r = 0;
697 916
698 x &= ~x + 1; /* this isolates the lowest bit */ 917 x &= ~x + 1; /* this isolates the lowest bit */
… …
712#endif 931#endif
713 932
714 return r; 933 return r;
715 } 934 }
716 935
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
718 ecb_function_ int 937 ecb_function_ ecb_const int
719 ecb_ctz64 (uint64_t x) 938 ecb_ctz64 (uint64_t x)
720 { 939 {
721 int shift = x & 0xffffffffU ? 0 : 32; 940 int shift = x & 0xffffffffU ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift; 941 return ecb_ctz32 (x >> shift) + shift;
723 } 942 }
724 943
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
726 ecb_function_ int 945 ecb_function_ ecb_const int
727 ecb_popcount32 (uint32_t x) 946 ecb_popcount32 (uint32_t x)
728 { 947 {
729 x -= (x >> 1) & 0x55555555; 948 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 949 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f; 950 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101; 951 x *= 0x01010101;
733 952
734 return x >> 24; 953 return x >> 24;
735 } 954 }
736 955
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
738 ecb_function_ int ecb_ld32 (uint32_t x) 957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
739 { 958 {
740 int r = 0; 959 int r = 0;
741 960
742 if (x >> 16) { x >>= 16; r += 16; } 961 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; } 962 if (x >> 8) { x >>= 8; r += 8; }
… …
746 if (x >> 1) { r += 1; } 965 if (x >> 1) { r += 1; }
747 966
748 return r; 967 return r;
749 } 968 }
750 969
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
752 ecb_function_ int ecb_ld64 (uint64_t x) 971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
753 { 972 {
754 int r = 0; 973 int r = 0;
755 974
756 if (x >> 32) { x >>= 32; r += 32; } 975 if (x >> 32) { x >>= 32; r += 32; }
757 976
758 return r + ecb_ld32 (x); 977 return r + ecb_ld32 (x);
759 } 978 }
760#endif 979#endif
761 980
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
762/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1016/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */ 1017/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1018ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
765ecb_function_ int 1019ecb_function_ ecb_const int
766ecb_popcount64 (uint64_t x) 1020ecb_popcount64 (uint64_t x)
767{ 1021{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1022 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769} 1023}
770 1024
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1025ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1026ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1027ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1028ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1029ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1030ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1031ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1032ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
779 1033
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1034ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (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); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1036ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (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); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1038ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (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); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (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); }
788 1042
789#if ECB_GCC_VERSION(4,3) 1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
791 #define ecb_bswap32(x) __builtin_bswap32 (x) 1045 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x) 1046 #define ecb_bswap64(x) __builtin_bswap64 (x)
793#else 1047#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
795 ecb_function_ uint16_t 1049 ecb_function_ ecb_const uint16_t
796 ecb_bswap16 (uint16_t x) 1050 ecb_bswap16 (uint16_t x)
797 { 1051 {
798 return ecb_rotl16 (x, 8); 1052 return ecb_rotl16 (x, 8);
799 } 1053 }
800 1054
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1055 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
802 ecb_function_ uint32_t 1056 ecb_function_ ecb_const uint32_t
803 ecb_bswap32 (uint32_t x) 1057 ecb_bswap32 (uint32_t x)
804 { 1058 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1059 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 } 1060 }
807 1061
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1062 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
809 ecb_function_ uint64_t 1063 ecb_function_ ecb_const uint64_t
810 ecb_bswap64 (uint64_t x) 1064 ecb_bswap64 (uint64_t x)
811 { 1065 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1066 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 } 1067 }
814#endif 1068#endif
815 1069
816#if ECB_GCC_VERSION(4,5) 1070#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
817 #define ecb_unreachable() __builtin_unreachable () 1071 #define ecb_unreachable() __builtin_unreachable ()
818#else 1072#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1073 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1074 ecb_inline ecb_noreturn void ecb_unreachable (void);
821 ecb_function_ void ecb_unreachable (void) { } 1075 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
822#endif 1076#endif
823 1077
824/* try to tell the compiler that some condition is definitely true */ 1078/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
826 1080
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
828ecb_function_ unsigned char 1082ecb_inline ecb_const unsigned char
829ecb_byteorder_helper (void) 1083ecb_byteorder_helper (void)
830{ 1084{
831 const uint32_t u = 0x11223344; 1085 /* the union code still generates code under pressure in gcc, */
832 return *(unsigned char *)&u; 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
833} 1105}
834 1106
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1107ecb_inline ecb_const ecb_bool ecb_big_endian (void);
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1109ecb_inline ecb_const ecb_bool ecb_little_endian (void);
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
839 1111
840#if ECB_GCC_VERSION(3,0) || ECB_C99 1112#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else 1114#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif 1116#endif
845 1117
846#if __cplusplus 1118#if ECB_CPP
847 template<typename T> 1119 template<typename T>
848 static inline T ecb_div_rd (T val, T div) 1120 static inline T ecb_div_rd (T val, T div)
849 { 1121 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1122 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 } 1123 }
… …
868 } 1140 }
869#else 1141#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif 1143#endif
872 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
873#endif 1353#endif
874 1354
875/* ECB.H END */ 1355/* ECB.H END */
876 1356
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1357#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is 1358/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev 1359 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1360 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops. 1361 * libev, in which cases the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread, 1362 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences. 1363 * which will then provide the memory fences.
884 */ 1364 */
885# error "memory fences not defined for your architecture, please report" 1365# error "memory fences not defined for your architecture, please report"
886#endif 1366#endif
… …
1043{ 1523{
1044 write (STDERR_FILENO, msg, strlen (msg)); 1524 write (STDERR_FILENO, msg, strlen (msg));
1045} 1525}
1046#endif 1526#endif
1047 1527
1048static void (*syserr_cb)(const char *msg); 1528static void (*syserr_cb)(const char *msg) EV_THROW;
1049 1529
1050void ecb_cold 1530void ecb_cold
1051ev_set_syserr_cb (void (*cb)(const char *msg)) 1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1052{ 1532{
1053 syserr_cb = cb; 1533 syserr_cb = cb;
1054} 1534}
1055 1535
1056static void noinline ecb_cold 1536static void noinline ecb_cold
… …
1074 abort (); 1554 abort ();
1075 } 1555 }
1076} 1556}
1077 1557
1078static void * 1558static void *
1079ev_realloc_emul (void *ptr, long size) 1559ev_realloc_emul (void *ptr, long size) EV_THROW
1080{ 1560{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
1084 /* some systems, notably openbsd and darwin, fail to properly 1561 /* some systems, notably openbsd and darwin, fail to properly
1085 * 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
1086 * 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.
1087 */ 1566 */
1088 1567
1089 if (size) 1568 if (size)
1090 return realloc (ptr, size); 1569 return realloc (ptr, size);
1091 1570
1092 free (ptr); 1571 free (ptr);
1093 return 0; 1572 return 0;
1094#endif
1095} 1573}
1096 1574
1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1098 1576
1099void ecb_cold 1577void ecb_cold
1100ev_set_allocator (void *(*cb)(void *ptr, long size)) 1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1101{ 1579{
1102 alloc = cb; 1580 alloc = cb;
1103} 1581}
1104 1582
1105inline_speed void * 1583inline_speed void *
… …
1193 #undef VAR 1671 #undef VAR
1194 }; 1672 };
1195 #include "ev_wrap.h" 1673 #include "ev_wrap.h"
1196 1674
1197 static struct ev_loop default_loop_struct; 1675 static struct ev_loop default_loop_struct;
1198 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 */
1199 1677
1200#else 1678#else
1201 1679
1202 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 */
1203 #define VAR(name,decl) static decl; 1681 #define VAR(name,decl) static decl;
1204 #include "ev_vars.h" 1682 #include "ev_vars.h"
1205 #undef VAR 1683 #undef VAR
1206 1684
1207 static int ev_default_loop_ptr; 1685 static int ev_default_loop_ptr;
… …
1222 1700
1223/*****************************************************************************/ 1701/*****************************************************************************/
1224 1702
1225#ifndef EV_HAVE_EV_TIME 1703#ifndef EV_HAVE_EV_TIME
1226ev_tstamp 1704ev_tstamp
1227ev_time (void) 1705ev_time (void) EV_THROW
1228{ 1706{
1229#if EV_USE_REALTIME 1707#if EV_USE_REALTIME
1230 if (expect_true (have_realtime)) 1708 if (expect_true (have_realtime))
1231 { 1709 {
1232 struct timespec ts; 1710 struct timespec ts;
… …
1256 return ev_time (); 1734 return ev_time ();
1257} 1735}
1258 1736
1259#if EV_MULTIPLICITY 1737#if EV_MULTIPLICITY
1260ev_tstamp 1738ev_tstamp
1261ev_now (EV_P) 1739ev_now (EV_P) EV_THROW
1262{ 1740{
1263 return ev_rt_now; 1741 return ev_rt_now;
1264} 1742}
1265#endif 1743#endif
1266 1744
1267void 1745void
1268ev_sleep (ev_tstamp delay) 1746ev_sleep (ev_tstamp delay) EV_THROW
1269{ 1747{
1270 if (delay > 0.) 1748 if (delay > 0.)
1271 { 1749 {
1272#if EV_USE_NANOSLEEP 1750#if EV_USE_NANOSLEEP
1273 struct timespec ts; 1751 struct timespec ts;
1274 1752
1275 EV_TS_SET (ts, delay); 1753 EV_TS_SET (ts, delay);
1276 nanosleep (&ts, 0); 1754 nanosleep (&ts, 0);
1277#elif defined(_WIN32) 1755#elif defined _WIN32
1278 Sleep ((unsigned long)(delay * 1e3)); 1756 Sleep ((unsigned long)(delay * 1e3));
1279#else 1757#else
1280 struct timeval tv; 1758 struct timeval tv;
1281 1759
1282 /* 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 */
… …
1301 1779
1302 do 1780 do
1303 ncur <<= 1; 1781 ncur <<= 1;
1304 while (cnt > ncur); 1782 while (cnt > ncur);
1305 1783
1306 /* 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 */
1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1785 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1308 { 1786 {
1309 ncur *= elem; 1787 ncur *= elem;
1310 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);
1311 ncur = ncur - sizeof (void *) * 4; 1789 ncur = ncur - sizeof (void *) * 4;
… …
1354pendingcb (EV_P_ ev_prepare *w, int revents) 1832pendingcb (EV_P_ ev_prepare *w, int revents)
1355{ 1833{
1356} 1834}
1357 1835
1358void noinline 1836void noinline
1359ev_feed_event (EV_P_ void *w, int revents) 1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1360{ 1838{
1361 W w_ = (W)w; 1839 W w_ = (W)w;
1362 int pri = ABSPRI (w_); 1840 int pri = ABSPRI (w_);
1363 1841
1364 if (expect_false (w_->pending)) 1842 if (expect_false (w_->pending))
… …
1368 w_->pending = ++pendingcnt [pri]; 1846 w_->pending = ++pendingcnt [pri];
1369 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1370 pendings [pri][w_->pending - 1].w = w_; 1848 pendings [pri][w_->pending - 1].w = w_;
1371 pendings [pri][w_->pending - 1].events = revents; 1849 pendings [pri][w_->pending - 1].events = revents;
1372 } 1850 }
1851
1852 pendingpri = NUMPRI - 1;
1373} 1853}
1374 1854
1375inline_speed void 1855inline_speed void
1376feed_reverse (EV_P_ W w) 1856feed_reverse (EV_P_ W w)
1377{ 1857{
… …
1423 if (expect_true (!anfd->reify)) 1903 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents); 1904 fd_event_nocheck (EV_A_ fd, revents);
1425} 1905}
1426 1906
1427void 1907void
1428ev_feed_fd_event (EV_P_ int fd, int revents) 1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1429{ 1909{
1430 if (fd >= 0 && fd < anfdmax) 1910 if (fd >= 0 && fd < anfdmax)
1431 fd_event_nocheck (EV_A_ fd, revents); 1911 fd_event_nocheck (EV_A_ fd, revents);
1432} 1912}
1433 1913
… …
1752static void noinline ecb_cold 2232static void noinline ecb_cold
1753evpipe_init (EV_P) 2233evpipe_init (EV_P)
1754{ 2234{
1755 if (!ev_is_active (&pipe_w)) 2235 if (!ev_is_active (&pipe_w))
1756 { 2236 {
2237 int fds [2];
2238
1757# if EV_USE_EVENTFD 2239# if EV_USE_EVENTFD
2240 fds [0] = -1;
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2241 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL) 2242 if (fds [1] < 0 && errno == EINVAL)
1760 evfd = eventfd (0, 0); 2243 fds [1] = eventfd (0, 0);
1761 2244
1762 if (evfd >= 0) 2245 if (fds [1] < 0)
2246# endif
1763 { 2247 {
2248 while (pipe (fds))
2249 ev_syserr ("(libev) error creating signal/async pipe");
2250
2251 fd_intern (fds [0]);
2252 }
2253
1764 evpipe [0] = -1; 2254 evpipe [0] = fds [0];
1765 fd_intern (evfd); /* doing it twice doesn't hurt */ 2255
1766 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));
1767 } 2306 }
1768 else 2307 else
1769# endif 2308#endif
1770 { 2309 {
1771 while (pipe (evpipe)) 2310#ifdef _WIN32
1772 ev_syserr ("(libev) error creating signal/async pipe"); 2311 WSABUF buf;
1773 2312 DWORD sent;
1774 fd_intern (evpipe [0]); 2313 buf.buf = &buf;
1775 fd_intern (evpipe [1]); 2314 buf.len = 1;
1776 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1777 } 2316#else
1778
1779 ev_io_start (EV_A_ &pipe_w);
1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1781 }
1782}
1783
1784inline_speed void
1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1786{
1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1804 old_errno = errno; /* save errno because write will clobber it */
1805
1806#if EV_USE_EVENTFD
1807 if (evfd >= 0)
1808 {
1809 uint64_t counter = 1;
1810 write (evfd, &counter, sizeof (uint64_t));
1811 }
1812 else
1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1820 write (evpipe [1], &(evpipe [1]), 1); 2317 write (evpipe [1], &(evpipe [1]), 1);
2318#endif
1821 } 2319 }
1822 2320
1823 errno = old_errno; 2321 errno = old_errno;
1824 } 2322 }
1825} 2323}
… …
1832 int i; 2330 int i;
1833 2331
1834 if (revents & EV_READ) 2332 if (revents & EV_READ)
1835 { 2333 {
1836#if EV_USE_EVENTFD 2334#if EV_USE_EVENTFD
1837 if (evfd >= 0) 2335 if (evpipe [0] < 0)
1838 { 2336 {
1839 uint64_t counter; 2337 uint64_t counter;
1840 read (evfd, &counter, sizeof (uint64_t)); 2338 read (evpipe [1], &counter, sizeof (uint64_t));
1841 } 2339 }
1842 else 2340 else
1843#endif 2341#endif
1844 { 2342 {
1845 char dummy; 2343 char dummy[4];
1846 /* 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
1847 read (evpipe [0], &dummy, 1); 2352 read (evpipe [0], &dummy, sizeof (dummy));
2353#endif
1848 } 2354 }
1849 } 2355 }
1850 2356
1851 pipe_write_skipped = 0; 2357 pipe_write_skipped = 0;
2358
2359 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1852 2360
1853#if EV_SIGNAL_ENABLE 2361#if EV_SIGNAL_ENABLE
1854 if (sig_pending) 2362 if (sig_pending)
1855 { 2363 {
1856 sig_pending = 0; 2364 sig_pending = 0;
2365
2366 ECB_MEMORY_FENCE;
1857 2367
1858 for (i = EV_NSIG - 1; i--; ) 2368 for (i = EV_NSIG - 1; i--; )
1859 if (expect_false (signals [i].pending)) 2369 if (expect_false (signals [i].pending))
1860 ev_feed_signal_event (EV_A_ i + 1); 2370 ev_feed_signal_event (EV_A_ i + 1);
1861 } 2371 }
… …
1863 2373
1864#if EV_ASYNC_ENABLE 2374#if EV_ASYNC_ENABLE
1865 if (async_pending) 2375 if (async_pending)
1866 { 2376 {
1867 async_pending = 0; 2377 async_pending = 0;
2378
2379 ECB_MEMORY_FENCE;
1868 2380
1869 for (i = asynccnt; i--; ) 2381 for (i = asynccnt; i--; )
1870 if (asyncs [i]->sent) 2382 if (asyncs [i]->sent)
1871 { 2383 {
1872 asyncs [i]->sent = 0; 2384 asyncs [i]->sent = 0;
2385 ECB_MEMORY_FENCE_RELEASE;
1873 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2386 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1874 } 2387 }
1875 } 2388 }
1876#endif 2389#endif
1877} 2390}
1878 2391
1879/*****************************************************************************/ 2392/*****************************************************************************/
1880 2393
1881void 2394void
1882ev_feed_signal (int signum) 2395ev_feed_signal (int signum) EV_THROW
1883{ 2396{
1884#if EV_MULTIPLICITY 2397#if EV_MULTIPLICITY
2398 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE;
1885 EV_P = signals [signum - 1].loop; 2400 EV_A = signals [signum - 1].loop;
1886 2401
1887 if (!EV_A) 2402 if (!EV_A)
1888 return; 2403 return;
1889#endif 2404#endif
1890 2405
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1; 2406 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending); 2407 evpipe_write (EV_A_ &sig_pending);
1896} 2408}
1897 2409
1898static void 2410static void
… …
1904 2416
1905 ev_feed_signal (signum); 2417 ev_feed_signal (signum);
1906} 2418}
1907 2419
1908void noinline 2420void noinline
1909ev_feed_signal_event (EV_P_ int signum) 2421ev_feed_signal_event (EV_P_ int signum) EV_THROW
1910{ 2422{
1911 WL w; 2423 WL w;
1912 2424
1913 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2425 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1914 return; 2426 return;
1915 2427
1916 --signum; 2428 --signum;
1917 2429
1918#if EV_MULTIPLICITY 2430#if EV_MULTIPLICITY
… …
1922 if (expect_false (signals [signum].loop != EV_A)) 2434 if (expect_false (signals [signum].loop != EV_A))
1923 return; 2435 return;
1924#endif 2436#endif
1925 2437
1926 signals [signum].pending = 0; 2438 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE;
1927 2440
1928 for (w = signals [signum].head; w; w = w->next) 2441 for (w = signals [signum].head; w; w = w->next)
1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2442 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1930} 2443}
1931 2444
… …
2030#if EV_USE_SELECT 2543#if EV_USE_SELECT
2031# include "ev_select.c" 2544# include "ev_select.c"
2032#endif 2545#endif
2033 2546
2034int ecb_cold 2547int ecb_cold
2035ev_version_major (void) 2548ev_version_major (void) EV_THROW
2036{ 2549{
2037 return EV_VERSION_MAJOR; 2550 return EV_VERSION_MAJOR;
2038} 2551}
2039 2552
2040int ecb_cold 2553int ecb_cold
2041ev_version_minor (void) 2554ev_version_minor (void) EV_THROW
2042{ 2555{
2043 return EV_VERSION_MINOR; 2556 return EV_VERSION_MINOR;
2044} 2557}
2045 2558
2046/* 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 */
… …
2054 || getgid () != getegid (); 2567 || getgid () != getegid ();
2055#endif 2568#endif
2056} 2569}
2057 2570
2058unsigned int ecb_cold 2571unsigned int ecb_cold
2059ev_supported_backends (void) 2572ev_supported_backends (void) EV_THROW
2060{ 2573{
2061 unsigned int flags = 0; 2574 unsigned int flags = 0;
2062 2575
2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2064 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2068 2581
2069 return flags; 2582 return flags;
2070} 2583}
2071 2584
2072unsigned int ecb_cold 2585unsigned int ecb_cold
2073ev_recommended_backends (void) 2586ev_recommended_backends (void) EV_THROW
2074{ 2587{
2075 unsigned int flags = ev_supported_backends (); 2588 unsigned int flags = ev_supported_backends ();
2076 2589
2077#ifndef __NetBSD__ 2590#ifndef __NetBSD__
2078 /* kqueue is borked on everything but netbsd apparently */ 2591 /* kqueue is borked on everything but netbsd apparently */
… …
2090 2603
2091 return flags; 2604 return flags;
2092} 2605}
2093 2606
2094unsigned int ecb_cold 2607unsigned int ecb_cold
2095ev_embeddable_backends (void) 2608ev_embeddable_backends (void) EV_THROW
2096{ 2609{
2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2098 2611
2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2102 2615
2103 return flags; 2616 return flags;
2104} 2617}
2105 2618
2106unsigned int 2619unsigned int
2107ev_backend (EV_P) 2620ev_backend (EV_P) EV_THROW
2108{ 2621{
2109 return backend; 2622 return backend;
2110} 2623}
2111 2624
2112#if EV_FEATURE_API 2625#if EV_FEATURE_API
2113unsigned int 2626unsigned int
2114ev_iteration (EV_P) 2627ev_iteration (EV_P) EV_THROW
2115{ 2628{
2116 return loop_count; 2629 return loop_count;
2117} 2630}
2118 2631
2119unsigned int 2632unsigned int
2120ev_depth (EV_P) 2633ev_depth (EV_P) EV_THROW
2121{ 2634{
2122 return loop_depth; 2635 return loop_depth;
2123} 2636}
2124 2637
2125void 2638void
2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2127{ 2640{
2128 io_blocktime = interval; 2641 io_blocktime = interval;
2129} 2642}
2130 2643
2131void 2644void
2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2133{ 2646{
2134 timeout_blocktime = interval; 2647 timeout_blocktime = interval;
2135} 2648}
2136 2649
2137void 2650void
2138ev_set_userdata (EV_P_ void *data) 2651ev_set_userdata (EV_P_ void *data) EV_THROW
2139{ 2652{
2140 userdata = data; 2653 userdata = data;
2141} 2654}
2142 2655
2143void * 2656void *
2144ev_userdata (EV_P) 2657ev_userdata (EV_P) EV_THROW
2145{ 2658{
2146 return userdata; 2659 return userdata;
2147} 2660}
2148 2661
2149void 2662void
2150ev_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
2151{ 2664{
2152 invoke_cb = invoke_pending_cb; 2665 invoke_cb = invoke_pending_cb;
2153} 2666}
2154 2667
2155void 2668void
2156ev_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
2157{ 2670{
2158 release_cb = release; 2671 release_cb = release;
2159 acquire_cb = acquire; 2672 acquire_cb = acquire;
2160} 2673}
2161#endif 2674#endif
2162 2675
2163/* initialise a loop structure, must be zero-initialised */ 2676/* initialise a loop structure, must be zero-initialised */
2164static void noinline ecb_cold 2677static void noinline ecb_cold
2165loop_init (EV_P_ unsigned int flags) 2678loop_init (EV_P_ unsigned int flags) EV_THROW
2166{ 2679{
2167 if (!backend) 2680 if (!backend)
2168 { 2681 {
2169 origflags = flags; 2682 origflags = flags;
2170 2683
… …
2215#if EV_ASYNC_ENABLE 2728#if EV_ASYNC_ENABLE
2216 async_pending = 0; 2729 async_pending = 0;
2217#endif 2730#endif
2218 pipe_write_skipped = 0; 2731 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0; 2732 pipe_write_wanted = 0;
2733 evpipe [0] = -1;
2734 evpipe [1] = -1;
2220#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif 2737#endif
2223#if EV_USE_SIGNALFD 2738#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2275 EV_INVOKE_PENDING; 2790 EV_INVOKE_PENDING;
2276 } 2791 }
2277#endif 2792#endif
2278 2793
2279#if EV_CHILD_ENABLE 2794#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev)) 2795 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2281 { 2796 {
2282 ev_ref (EV_A); /* child watcher */ 2797 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev); 2798 ev_signal_stop (EV_A_ &childev);
2284 } 2799 }
2285#endif 2800#endif
… …
2287 if (ev_is_active (&pipe_w)) 2802 if (ev_is_active (&pipe_w))
2288 { 2803 {
2289 /*ev_ref (EV_A);*/ 2804 /*ev_ref (EV_A);*/
2290 /*ev_io_stop (EV_A_ &pipe_w);*/ 2805 /*ev_io_stop (EV_A_ &pipe_w);*/
2291 2806
2292#if EV_USE_EVENTFD
2293 if (evfd >= 0)
2294 close (evfd);
2295#endif
2296
2297 if (evpipe [0] >= 0)
2298 {
2299 EV_WIN32_CLOSE_FD (evpipe [0]); 2807 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2300 EV_WIN32_CLOSE_FD (evpipe [1]); 2808 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2301 }
2302 } 2809 }
2303 2810
2304#if EV_USE_SIGNALFD 2811#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w)) 2812 if (ev_is_active (&sigfd_w))
2306 close (sigfd); 2813 close (sigfd);
… …
2392#endif 2899#endif
2393#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
2394 infy_fork (EV_A); 2901 infy_fork (EV_A);
2395#endif 2902#endif
2396 2903
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 if (ev_is_active (&pipe_w)) 2905 if (ev_is_active (&pipe_w))
2398 { 2906 {
2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2400 2908
2401 ev_ref (EV_A); 2909 ev_ref (EV_A);
2402 ev_io_stop (EV_A_ &pipe_w); 2910 ev_io_stop (EV_A_ &pipe_w);
2403 2911
2404#if EV_USE_EVENTFD
2405 if (evfd >= 0)
2406 close (evfd);
2407#endif
2408
2409 if (evpipe [0] >= 0) 2912 if (evpipe [0] >= 0)
2410 {
2411 EV_WIN32_CLOSE_FD (evpipe [0]); 2913 EV_WIN32_CLOSE_FD (evpipe [0]);
2412 EV_WIN32_CLOSE_FD (evpipe [1]);
2413 }
2414 2914
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2416 evpipe_init (EV_A); 2915 evpipe_init (EV_A);
2417 /* now iterate over everything, in case we missed something */ 2916 /* iterate over everything, in case we missed something before */
2418 pipecb (EV_A_ &pipe_w, EV_READ); 2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2419#endif
2420 } 2918 }
2919#endif
2421 2920
2422 postfork = 0; 2921 postfork = 0;
2423} 2922}
2424 2923
2425#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
2426 2925
2427struct ev_loop * ecb_cold 2926struct ev_loop * ecb_cold
2428ev_loop_new (unsigned int flags) 2927ev_loop_new (unsigned int flags) EV_THROW
2429{ 2928{
2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2431 2930
2432 memset (EV_A, 0, sizeof (struct ev_loop)); 2931 memset (EV_A, 0, sizeof (struct ev_loop));
2433 loop_init (EV_A_ flags); 2932 loop_init (EV_A_ flags);
… …
2477} 2976}
2478#endif 2977#endif
2479 2978
2480#if EV_FEATURE_API 2979#if EV_FEATURE_API
2481void ecb_cold 2980void ecb_cold
2482ev_verify (EV_P) 2981ev_verify (EV_P) EV_THROW
2483{ 2982{
2484#if EV_VERIFY 2983#if EV_VERIFY
2485 int i; 2984 int i;
2486 WL w; 2985 WL w, w2;
2487 2986
2488 assert (activecnt >= -1); 2987 assert (activecnt >= -1);
2489 2988
2490 assert (fdchangemax >= fdchangecnt); 2989 assert (fdchangemax >= fdchangecnt);
2491 for (i = 0; i < fdchangecnt; ++i) 2990 for (i = 0; i < fdchangecnt; ++i)
2492 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2493 2992
2494 assert (anfdmax >= 0); 2993 assert (anfdmax >= 0);
2495 for (i = 0; i < anfdmax; ++i) 2994 for (i = 0; i < anfdmax; ++i)
2995 {
2996 int j = 0;
2997
2496 for (w = anfds [i].head; w; w = w->next) 2998 for (w = w2 = anfds [i].head; w; w = w->next)
2497 { 2999 {
2498 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
2499 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));
2500 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));
2501 } 3010 }
3011 }
2502 3012
2503 assert (timermax >= timercnt); 3013 assert (timermax >= timercnt);
2504 verify_heap (EV_A_ timers, timercnt); 3014 verify_heap (EV_A_ timers, timercnt);
2505 3015
2506#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
… …
2556#if EV_MULTIPLICITY 3066#if EV_MULTIPLICITY
2557struct ev_loop * ecb_cold 3067struct ev_loop * ecb_cold
2558#else 3068#else
2559int 3069int
2560#endif 3070#endif
2561ev_default_loop (unsigned int flags) 3071ev_default_loop (unsigned int flags) EV_THROW
2562{ 3072{
2563 if (!ev_default_loop_ptr) 3073 if (!ev_default_loop_ptr)
2564 { 3074 {
2565#if EV_MULTIPLICITY 3075#if EV_MULTIPLICITY
2566 EV_P = ev_default_loop_ptr = &default_loop_struct; 3076 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2585 3095
2586 return ev_default_loop_ptr; 3096 return ev_default_loop_ptr;
2587} 3097}
2588 3098
2589void 3099void
2590ev_loop_fork (EV_P) 3100ev_loop_fork (EV_P) EV_THROW
2591{ 3101{
2592 postfork = 1; /* must be in line with ev_default_fork */ 3102 postfork = 1;
2593} 3103}
2594 3104
2595/*****************************************************************************/ 3105/*****************************************************************************/
2596 3106
2597void 3107void
… …
2599{ 3109{
2600 EV_CB_INVOKE ((W)w, revents); 3110 EV_CB_INVOKE ((W)w, revents);
2601} 3111}
2602 3112
2603unsigned int 3113unsigned int
2604ev_pending_count (EV_P) 3114ev_pending_count (EV_P) EV_THROW
2605{ 3115{
2606 int pri; 3116 int pri;
2607 unsigned int count = 0; 3117 unsigned int count = 0;
2608 3118
2609 for (pri = NUMPRI; pri--; ) 3119 for (pri = NUMPRI; pri--; )
… …
2613} 3123}
2614 3124
2615void noinline 3125void noinline
2616ev_invoke_pending (EV_P) 3126ev_invoke_pending (EV_P)
2617{ 3127{
2618 int pri; 3128 pendingpri = NUMPRI;
2619 3129
2620 for (pri = NUMPRI; pri--; ) 3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3131 {
3132 --pendingpri;
3133
2621 while (pendingcnt [pri]) 3134 while (pendingcnt [pendingpri])
2622 { 3135 {
2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2624 3137
2625 p->w->pending = 0; 3138 p->w->pending = 0;
2626 EV_CB_INVOKE (p->w, p->events); 3139 EV_CB_INVOKE (p->w, p->events);
2627 EV_FREQUENT_CHECK; 3140 EV_FREQUENT_CHECK;
2628 } 3141 }
3142 }
2629} 3143}
2630 3144
2631#if EV_IDLE_ENABLE 3145#if EV_IDLE_ENABLE
2632/* make idle watchers pending. this handles the "call-idle */ 3146/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */ 3147/* only when higher priorities are idle" logic */
… …
2723{ 3237{
2724 EV_FREQUENT_CHECK; 3238 EV_FREQUENT_CHECK;
2725 3239
2726 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2727 { 3241 {
2728 int feed_count = 0;
2729
2730 do 3242 do
2731 { 3243 {
2732 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3244 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2733 3245
2734 /*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)));*/
… …
2868 3380
2869 mn_now = ev_rt_now; 3381 mn_now = ev_rt_now;
2870 } 3382 }
2871} 3383}
2872 3384
2873void 3385int
2874ev_run (EV_P_ int flags) 3386ev_run (EV_P_ int flags)
2875{ 3387{
2876#if EV_FEATURE_API 3388#if EV_FEATURE_API
2877 ++loop_depth; 3389 ++loop_depth;
2878#endif 3390#endif
… …
2991#endif 3503#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3504 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2993 backend_poll (EV_A_ waittime); 3505 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3506 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995 3507
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3508 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2997 3509
3510 ECB_MEMORY_FENCE_ACQUIRE;
2998 if (pipe_write_skipped) 3511 if (pipe_write_skipped)
2999 { 3512 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3513 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3514 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 } 3515 }
… …
3035 loop_done = EVBREAK_CANCEL; 3548 loop_done = EVBREAK_CANCEL;
3036 3549
3037#if EV_FEATURE_API 3550#if EV_FEATURE_API
3038 --loop_depth; 3551 --loop_depth;
3039#endif 3552#endif
3553
3554 return activecnt;
3040} 3555}
3041 3556
3042void 3557void
3043ev_break (EV_P_ int how) 3558ev_break (EV_P_ int how) EV_THROW
3044{ 3559{
3045 loop_done = how; 3560 loop_done = how;
3046} 3561}
3047 3562
3048void 3563void
3049ev_ref (EV_P) 3564ev_ref (EV_P) EV_THROW
3050{ 3565{
3051 ++activecnt; 3566 ++activecnt;
3052} 3567}
3053 3568
3054void 3569void
3055ev_unref (EV_P) 3570ev_unref (EV_P) EV_THROW
3056{ 3571{
3057 --activecnt; 3572 --activecnt;
3058} 3573}
3059 3574
3060void 3575void
3061ev_now_update (EV_P) 3576ev_now_update (EV_P) EV_THROW
3062{ 3577{
3063 time_update (EV_A_ 1e100); 3578 time_update (EV_A_ 1e100);
3064} 3579}
3065 3580
3066void 3581void
3067ev_suspend (EV_P) 3582ev_suspend (EV_P) EV_THROW
3068{ 3583{
3069 ev_now_update (EV_A); 3584 ev_now_update (EV_A);
3070} 3585}
3071 3586
3072void 3587void
3073ev_resume (EV_P) 3588ev_resume (EV_P) EV_THROW
3074{ 3589{
3075 ev_tstamp mn_prev = mn_now; 3590 ev_tstamp mn_prev = mn_now;
3076 3591
3077 ev_now_update (EV_A); 3592 ev_now_update (EV_A);
3078 timers_reschedule (EV_A_ mn_now - mn_prev); 3593 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3117 w->pending = 0; 3632 w->pending = 0;
3118 } 3633 }
3119} 3634}
3120 3635
3121int 3636int
3122ev_clear_pending (EV_P_ void *w) 3637ev_clear_pending (EV_P_ void *w) EV_THROW
3123{ 3638{
3124 W w_ = (W)w; 3639 W w_ = (W)w;
3125 int pending = w_->pending; 3640 int pending = w_->pending;
3126 3641
3127 if (expect_true (pending)) 3642 if (expect_true (pending))
… …
3160} 3675}
3161 3676
3162/*****************************************************************************/ 3677/*****************************************************************************/
3163 3678
3164void noinline 3679void noinline
3165ev_io_start (EV_P_ ev_io *w) 3680ev_io_start (EV_P_ ev_io *w) EV_THROW
3166{ 3681{
3167 int fd = w->fd; 3682 int fd = w->fd;
3168 3683
3169 if (expect_false (ev_is_active (w))) 3684 if (expect_false (ev_is_active (w)))
3170 return; 3685 return;
… …
3176 3691
3177 ev_start (EV_A_ (W)w, 1); 3692 ev_start (EV_A_ (W)w, 1);
3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3179 wlist_add (&anfds[fd].head, (WL)w); 3694 wlist_add (&anfds[fd].head, (WL)w);
3180 3695
3696 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698
3181 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);
3182 w->events &= ~EV__IOFDSET; 3700 w->events &= ~EV__IOFDSET;
3183 3701
3184 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
3185} 3703}
3186 3704
3187void noinline 3705void noinline
3188ev_io_stop (EV_P_ ev_io *w) 3706ev_io_stop (EV_P_ ev_io *w) EV_THROW
3189{ 3707{
3190 clear_pending (EV_A_ (W)w); 3708 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3709 if (expect_false (!ev_is_active (w)))
3192 return; 3710 return;
3193 3711
… …
3202 3720
3203 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3204} 3722}
3205 3723
3206void noinline 3724void noinline
3207ev_timer_start (EV_P_ ev_timer *w) 3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3208{ 3726{
3209 if (expect_false (ev_is_active (w))) 3727 if (expect_false (ev_is_active (w)))
3210 return; 3728 return;
3211 3729
3212 ev_at (w) += mn_now; 3730 ev_at (w) += mn_now;
… …
3226 3744
3227 /*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));*/
3228} 3746}
3229 3747
3230void noinline 3748void noinline
3231ev_timer_stop (EV_P_ ev_timer *w) 3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3232{ 3750{
3233 clear_pending (EV_A_ (W)w); 3751 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 3752 if (expect_false (!ev_is_active (w)))
3235 return; 3753 return;
3236 3754
… …
3256 3774
3257 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
3258} 3776}
3259 3777
3260void noinline 3778void noinline
3261ev_timer_again (EV_P_ ev_timer *w) 3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3262{ 3780{
3263 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
3782
3783 clear_pending (EV_A_ (W)w);
3264 3784
3265 if (ev_is_active (w)) 3785 if (ev_is_active (w))
3266 { 3786 {
3267 if (w->repeat) 3787 if (w->repeat)
3268 { 3788 {
… …
3281 3801
3282 EV_FREQUENT_CHECK; 3802 EV_FREQUENT_CHECK;
3283} 3803}
3284 3804
3285ev_tstamp 3805ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w) 3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3287{ 3807{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289} 3809}
3290 3810
3291#if EV_PERIODIC_ENABLE 3811#if EV_PERIODIC_ENABLE
3292void noinline 3812void noinline
3293ev_periodic_start (EV_P_ ev_periodic *w) 3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3294{ 3814{
3295 if (expect_false (ev_is_active (w))) 3815 if (expect_false (ev_is_active (w)))
3296 return; 3816 return;
3297 3817
3298 if (w->reschedule_cb) 3818 if (w->reschedule_cb)
… …
3318 3838
3319 /*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));*/
3320} 3840}
3321 3841
3322void noinline 3842void noinline
3323ev_periodic_stop (EV_P_ ev_periodic *w) 3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3324{ 3844{
3325 clear_pending (EV_A_ (W)w); 3845 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 3846 if (expect_false (!ev_is_active (w)))
3327 return; 3847 return;
3328 3848
… …
3346 3866
3347 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
3348} 3868}
3349 3869
3350void noinline 3870void noinline
3351ev_periodic_again (EV_P_ ev_periodic *w) 3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3352{ 3872{
3353 /* TODO: use adjustheap and recalculation */ 3873 /* TODO: use adjustheap and recalculation */
3354 ev_periodic_stop (EV_A_ w); 3874 ev_periodic_stop (EV_A_ w);
3355 ev_periodic_start (EV_A_ w); 3875 ev_periodic_start (EV_A_ w);
3356} 3876}
… …
3361#endif 3881#endif
3362 3882
3363#if EV_SIGNAL_ENABLE 3883#if EV_SIGNAL_ENABLE
3364 3884
3365void noinline 3885void noinline
3366ev_signal_start (EV_P_ ev_signal *w) 3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3367{ 3887{
3368 if (expect_false (ev_is_active (w))) 3888 if (expect_false (ev_is_active (w)))
3369 return; 3889 return;
3370 3890
3371 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));
… …
3373#if EV_MULTIPLICITY 3893#if EV_MULTIPLICITY
3374 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",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3895 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3376 3896
3377 signals [w->signum - 1].loop = EV_A; 3897 signals [w->signum - 1].loop = EV_A;
3898 ECB_MEMORY_FENCE_RELEASE;
3378#endif 3899#endif
3379 3900
3380 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3381 3902
3382#if EV_USE_SIGNALFD 3903#if EV_USE_SIGNALFD
… …
3442 3963
3443 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3444} 3965}
3445 3966
3446void noinline 3967void noinline
3447ev_signal_stop (EV_P_ ev_signal *w) 3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3448{ 3969{
3449 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
3450 if (expect_false (!ev_is_active (w))) 3971 if (expect_false (!ev_is_active (w)))
3451 return; 3972 return;
3452 3973
… …
3483#endif 4004#endif
3484 4005
3485#if EV_CHILD_ENABLE 4006#if EV_CHILD_ENABLE
3486 4007
3487void 4008void
3488ev_child_start (EV_P_ ev_child *w) 4009ev_child_start (EV_P_ ev_child *w) EV_THROW
3489{ 4010{
3490#if EV_MULTIPLICITY 4011#if EV_MULTIPLICITY
3491 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));
3492#endif 4013#endif
3493 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
… …
3500 4021
3501 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
3502} 4023}
3503 4024
3504void 4025void
3505ev_child_stop (EV_P_ ev_child *w) 4026ev_child_stop (EV_P_ ev_child *w) EV_THROW
3506{ 4027{
3507 clear_pending (EV_A_ (W)w); 4028 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4029 if (expect_false (!ev_is_active (w)))
3509 return; 4030 return;
3510 4031
… …
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3538 4059
3539static void noinline 4060static void noinline
3540infy_add (EV_P_ ev_stat *w) 4061infy_add (EV_P_ ev_stat *w)
3541{ 4062{
3542 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);
3543 4067
3544 if (w->wd >= 0) 4068 if (w->wd >= 0)
3545 { 4069 {
3546 struct statfs sfs; 4070 struct statfs sfs;
3547 4071
… …
3551 4075
3552 if (!fs_2625) 4076 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4077 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs) 4078 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */ 4079 && (sfs.f_type == 0x1373 /* devfs */
4080 || sfs.f_type == 0x4006 /* fat */
4081 || sfs.f_type == 0x4d44 /* msdos */
3556 || 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 */
3557 || sfs.f_type == 0x3153464a /* jfs */ 4086 || sfs.f_type == 0x3153464a /* jfs */
4087 || sfs.f_type == 0x9123683e /* btrfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */ 4088 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */ 4089 || sfs.f_type == 0x01021994 /* tmpfs */
3560 || sfs.f_type == 0x58465342 /* xfs */)) 4090 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4091 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else 4092 else
3563 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 */
3564 } 4094 }
… …
3677} 4207}
3678 4208
3679inline_size int 4209inline_size int
3680infy_newfd (void) 4210infy_newfd (void)
3681{ 4211{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4212#if defined IN_CLOEXEC && defined IN_NONBLOCK
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4213 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0) 4214 if (fd >= 0)
3685 return fd; 4215 return fd;
3686#endif 4216#endif
3687 return inotify_init (); 4217 return inotify_init ();
… …
3762#else 4292#else
3763# define EV_LSTAT(p,b) lstat (p, b) 4293# define EV_LSTAT(p,b) lstat (p, b)
3764#endif 4294#endif
3765 4295
3766void 4296void
3767ev_stat_stat (EV_P_ ev_stat *w) 4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3768{ 4298{
3769 if (lstat (w->path, &w->attr) < 0) 4299 if (lstat (w->path, &w->attr) < 0)
3770 w->attr.st_nlink = 0; 4300 w->attr.st_nlink = 0;
3771 else if (!w->attr.st_nlink) 4301 else if (!w->attr.st_nlink)
3772 w->attr.st_nlink = 1; 4302 w->attr.st_nlink = 1;
… …
3811 ev_feed_event (EV_A_ w, EV_STAT); 4341 ev_feed_event (EV_A_ w, EV_STAT);
3812 } 4342 }
3813} 4343}
3814 4344
3815void 4345void
3816ev_stat_start (EV_P_ ev_stat *w) 4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3817{ 4347{
3818 if (expect_false (ev_is_active (w))) 4348 if (expect_false (ev_is_active (w)))
3819 return; 4349 return;
3820 4350
3821 ev_stat_stat (EV_A_ w); 4351 ev_stat_stat (EV_A_ w);
… …
3842 4372
3843 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3844} 4374}
3845 4375
3846void 4376void
3847ev_stat_stop (EV_P_ ev_stat *w) 4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3848{ 4378{
3849 clear_pending (EV_A_ (W)w); 4379 clear_pending (EV_A_ (W)w);
3850 if (expect_false (!ev_is_active (w))) 4380 if (expect_false (!ev_is_active (w)))
3851 return; 4381 return;
3852 4382
… …
3868} 4398}
3869#endif 4399#endif
3870 4400
3871#if EV_IDLE_ENABLE 4401#if EV_IDLE_ENABLE
3872void 4402void
3873ev_idle_start (EV_P_ ev_idle *w) 4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3874{ 4404{
3875 if (expect_false (ev_is_active (w))) 4405 if (expect_false (ev_is_active (w)))
3876 return; 4406 return;
3877 4407
3878 pri_adjust (EV_A_ (W)w); 4408 pri_adjust (EV_A_ (W)w);
… …
3891 4421
3892 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3893} 4423}
3894 4424
3895void 4425void
3896ev_idle_stop (EV_P_ ev_idle *w) 4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3897{ 4427{
3898 clear_pending (EV_A_ (W)w); 4428 clear_pending (EV_A_ (W)w);
3899 if (expect_false (!ev_is_active (w))) 4429 if (expect_false (!ev_is_active (w)))
3900 return; 4430 return;
3901 4431
… …
3915} 4445}
3916#endif 4446#endif
3917 4447
3918#if EV_PREPARE_ENABLE 4448#if EV_PREPARE_ENABLE
3919void 4449void
3920ev_prepare_start (EV_P_ ev_prepare *w) 4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3921{ 4451{
3922 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
3923 return; 4453 return;
3924 4454
3925 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
… …
3930 4460
3931 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
3932} 4462}
3933 4463
3934void 4464void
3935ev_prepare_stop (EV_P_ ev_prepare *w) 4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3936{ 4466{
3937 clear_pending (EV_A_ (W)w); 4467 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4468 if (expect_false (!ev_is_active (w)))
3939 return; 4469 return;
3940 4470
… …
3953} 4483}
3954#endif 4484#endif
3955 4485
3956#if EV_CHECK_ENABLE 4486#if EV_CHECK_ENABLE
3957void 4487void
3958ev_check_start (EV_P_ ev_check *w) 4488ev_check_start (EV_P_ ev_check *w) EV_THROW
3959{ 4489{
3960 if (expect_false (ev_is_active (w))) 4490 if (expect_false (ev_is_active (w)))
3961 return; 4491 return;
3962 4492
3963 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
… …
3968 4498
3969 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3970} 4500}
3971 4501
3972void 4502void
3973ev_check_stop (EV_P_ ev_check *w) 4503ev_check_stop (EV_P_ ev_check *w) EV_THROW
3974{ 4504{
3975 clear_pending (EV_A_ (W)w); 4505 clear_pending (EV_A_ (W)w);
3976 if (expect_false (!ev_is_active (w))) 4506 if (expect_false (!ev_is_active (w)))
3977 return; 4507 return;
3978 4508
… …
3991} 4521}
3992#endif 4522#endif
3993 4523
3994#if EV_EMBED_ENABLE 4524#if EV_EMBED_ENABLE
3995void noinline 4525void noinline
3996ev_embed_sweep (EV_P_ ev_embed *w) 4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3997{ 4527{
3998 ev_run (w->other, EVRUN_NOWAIT); 4528 ev_run (w->other, EVRUN_NOWAIT);
3999} 4529}
4000 4530
4001static void 4531static void
… …
4049 ev_idle_stop (EV_A_ idle); 4579 ev_idle_stop (EV_A_ idle);
4050} 4580}
4051#endif 4581#endif
4052 4582
4053void 4583void
4054ev_embed_start (EV_P_ ev_embed *w) 4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4055{ 4585{
4056 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
4057 return; 4587 return;
4058 4588
4059 { 4589 {
… …
4080 4610
4081 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
4082} 4612}
4083 4613
4084void 4614void
4085ev_embed_stop (EV_P_ ev_embed *w) 4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4086{ 4616{
4087 clear_pending (EV_A_ (W)w); 4617 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4618 if (expect_false (!ev_is_active (w)))
4089 return; 4619 return;
4090 4620
… …
4100} 4630}
4101#endif 4631#endif
4102 4632
4103#if EV_FORK_ENABLE 4633#if EV_FORK_ENABLE
4104void 4634void
4105ev_fork_start (EV_P_ ev_fork *w) 4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4106{ 4636{
4107 if (expect_false (ev_is_active (w))) 4637 if (expect_false (ev_is_active (w)))
4108 return; 4638 return;
4109 4639
4110 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
… …
4115 4645
4116 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
4117} 4647}
4118 4648
4119void 4649void
4120ev_fork_stop (EV_P_ ev_fork *w) 4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4121{ 4651{
4122 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
4123 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
4124 return; 4654 return;
4125 4655
… …
4138} 4668}
4139#endif 4669#endif
4140 4670
4141#if EV_CLEANUP_ENABLE 4671#if EV_CLEANUP_ENABLE
4142void 4672void
4143ev_cleanup_start (EV_P_ ev_cleanup *w) 4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4144{ 4674{
4145 if (expect_false (ev_is_active (w))) 4675 if (expect_false (ev_is_active (w)))
4146 return; 4676 return;
4147 4677
4148 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
… …
4155 ev_unref (EV_A); 4685 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
4157} 4687}
4158 4688
4159void 4689void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w) 4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4161{ 4691{
4162 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4693 if (expect_false (!ev_is_active (w)))
4164 return; 4694 return;
4165 4695
… …
4179} 4709}
4180#endif 4710#endif
4181 4711
4182#if EV_ASYNC_ENABLE 4712#if EV_ASYNC_ENABLE
4183void 4713void
4184ev_async_start (EV_P_ ev_async *w) 4714ev_async_start (EV_P_ ev_async *w) EV_THROW
4185{ 4715{
4186 if (expect_false (ev_is_active (w))) 4716 if (expect_false (ev_is_active (w)))
4187 return; 4717 return;
4188 4718
4189 w->sent = 0; 4719 w->sent = 0;
… …
4198 4728
4199 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
4200} 4730}
4201 4731
4202void 4732void
4203ev_async_stop (EV_P_ ev_async *w) 4733ev_async_stop (EV_P_ ev_async *w) EV_THROW
4204{ 4734{
4205 clear_pending (EV_A_ (W)w); 4735 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 4736 if (expect_false (!ev_is_active (w)))
4207 return; 4737 return;
4208 4738
… …
4219 4749
4220 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
4221} 4751}
4222 4752
4223void 4753void
4224ev_async_send (EV_P_ ev_async *w) 4754ev_async_send (EV_P_ ev_async *w) EV_THROW
4225{ 4755{
4226 w->sent = 1; 4756 w->sent = 1;
4227 evpipe_write (EV_A_ &async_pending); 4757 evpipe_write (EV_A_ &async_pending);
4228} 4758}
4229#endif 4759#endif
… …
4266 4796
4267 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));
4268} 4798}
4269 4799
4270void 4800void
4271ev_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
4272{ 4802{
4273 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));
4274 4804
4275 if (expect_false (!once)) 4805 if (expect_false (!once))
4276 { 4806 {
… …
4298 4828
4299/*****************************************************************************/ 4829/*****************************************************************************/
4300 4830
4301#if EV_WALK_ENABLE 4831#if EV_WALK_ENABLE
4302void ecb_cold 4832void ecb_cold
4303ev_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
4304{ 4834{
4305 int i, j; 4835 int i, j;
4306 ev_watcher_list *wl, *wn; 4836 ev_watcher_list *wl, *wn;
4307 4837
4308 if (types & (EV_IO | EV_EMBED)) 4838 if (types & (EV_IO | EV_EMBED))

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