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Comparing libev/ev.c (file contents):
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC vs.
Revision 1.467 by root, Fri May 16 15:15:39 2014 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 *
… …
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
188EV_CPP(extern "C" {) 188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
189 198
190#ifndef _WIN32 199#ifndef _WIN32
191# include <sys/time.h> 200# include <sys/time.h>
192# include <sys/wait.h> 201# include <sys/wait.h>
193# include <unistd.h> 202# include <unistd.h>
194#else 203#else
195# include <io.h> 204# include <io.h>
196# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
197# include <windows.h> 207# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
200# endif 210# endif
201# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
210#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
211 221
212/* 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 */
213 223
214/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 225#if defined EV_NSIG
216/* use what's provided */ 226/* use what's provided */
217#elif defined (NSIG) 227#elif defined NSIG
218# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 229#elif defined _NSIG
220# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 231#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 233#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 237#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 239#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 243#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 245#else
236# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 247#endif
241 248
242#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
244#endif 251#endif
245 252
246#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 256# else
250# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
251# endif 258# endif
252#endif 259#endif
253 260
254#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 264# else
258# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
259# endif 266# endif
260#endif 267#endif
… …
347 354
348#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 357#endif
351 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 378# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
360# else 383# else
… …
363# endif 386# endif
364#endif 387#endif
365 388
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 390
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
377#endif 394#endif
378 395
… …
386# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
387#endif 404#endif
388 405
389#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 408# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 409# include <sys/select.h>
393# endif 410# endif
394#endif 411#endif
395 412
396#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
403# endif 420# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 421#endif
409 422
410#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 425# include <stdint.h>
… …
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 483/* ECB.H BEGIN */
471/* 484/*
472 * libecb - http://software.schmorp.de/pkg/libecb 485 * libecb - http://software.schmorp.de/pkg/libecb
473 * 486 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 488 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 489 * All rights reserved.
477 * 490 *
478 * Redistribution and use in source and binary forms, with or without modifica- 491 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 492 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 *
512 * Alternatively, the contents of this file may be used under the terms of
513 * the GNU General Public License ("GPL") version 2 or any later version,
514 * in which case the provisions of the GPL are applicable instead of
515 * the above. If you wish to allow the use of your version of this file
516 * only under the terms of the GPL and not to allow others to use your
517 * version of this file under the BSD license, indicate your decision
518 * by deleting the provisions above and replace them with the notice
519 * and other provisions required by the GPL. If you do not delete the
520 * provisions above, a recipient may use your version of this file under
521 * either the BSD or the GPL.
498 */ 522 */
499 523
500#ifndef ECB_H 524#ifndef ECB_H
501#define ECB_H 525#define ECB_H
526
527/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003
502 529
503#ifdef _WIN32 530#ifdef _WIN32
504 typedef signed char int8_t; 531 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 532 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 533 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 539 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 540 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 541 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 542 typedef unsigned __int64 uint64_t;
516 #endif 543 #endif
544 #ifdef _WIN64
545 #define ECB_PTRSIZE 8
546 typedef uint64_t uintptr_t;
547 typedef int64_t intptr_t;
548 #else
549 #define ECB_PTRSIZE 4
550 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t;
552 #endif
517#else 553#else
518 #include <inttypes.h> 554 #include <inttypes.h>
555 #if UINTMAX_MAX > 0xffffffffU
556 #define ECB_PTRSIZE 8
557 #else
558 #define ECB_PTRSIZE 4
559 #endif
560#endif
561
562/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
564 #if _ILP32
565 #define ECB_AMD64_X32 1
566 #else
567 #define ECB_AMD64 1
568 #endif
519#endif 569#endif
520 570
521/* many compilers define _GNUC_ to some versions but then only implement 571/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 572 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 573 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 574 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 575 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 576 * an issue with that they should have done it right in the first place.
527 */ 577 */
528#ifndef ECB_GCC_VERSION 578#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 579 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 580 #define ECB_GCC_VERSION(major,minor) 0
531 #else 581 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 582 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 583 #endif
534#endif 584#endif
535 585
586#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L)
588
589#if ECB_CPP
590 #define ECB_C 0
591 #define ECB_STDC_VERSION 0
592#else
593 #define ECB_C 1
594 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif
596
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
599
600#if ECB_CPP
601 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END }
604#else
605 #define ECB_EXTERN_C extern
606 #define ECB_EXTERN_C_BEG
607 #define ECB_EXTERN_C_END
608#endif
609
536/*****************************************************************************/ 610/*****************************************************************************/
537 611
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 612/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 613/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 614
541#if ECB_NO_THREADS || ECB_NO_SMP 615#if ECB_NO_THREADS
616 #define ECB_NO_SMP 1
617#endif
618
619#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 620 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
545#endif 621#endif
546 622
547#ifndef ECB_MEMORY_FENCE 623#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 624 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 625 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __amd64 629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
649 #elif defined __mips__
650 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
651 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
653 #elif defined __alpha__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
655 #elif defined __hppa__
656 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif defined __ia64__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
660 #elif defined __m68k__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
662 #elif defined __m88k__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
664 #elif defined __sh__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
557 #endif 666 #endif
558 #endif 667 #endif
559#endif 668#endif
560 669
561#ifndef ECB_MEMORY_FENCE 670#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4) 671 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model.
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
563 #define ECB_MEMORY_FENCE __sync_synchronize () 689 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) 690 #elif _MSC_VER >= 1500 /* VC++ 2008 */
565 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) 691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
692 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
693 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
694 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
695 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 696 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 697 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 698 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 699 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 700 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32) 701 #elif defined _WIN32
572 #include <WinNT.h> 702 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 705 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
708 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
709 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync ()
576 #endif 711 #endif
577#endif 712#endif
578 713
579#ifndef ECB_MEMORY_FENCE 714#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* we assume that these memory fences work on all variables/all memory accesses, */
717 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
728 #endif
729#endif
730
731#ifndef ECB_MEMORY_FENCE
732 #if !ECB_AVOID_PTHREADS
580 /* 733 /*
581 * if you get undefined symbol references to pthread_mutex_lock, 734 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement 735 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler 736 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library 737 * OR provide pthread.h and link against the posix thread library
585 * of your system. 738 * of your system.
586 */ 739 */
587 #include <pthread.h> 740 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1 741 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 742 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590 743
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 744 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 745 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
746 #endif
747#endif
748
749#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 750 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
751#endif
752
753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif 755#endif
596 756
597/*****************************************************************************/ 757/*****************************************************************************/
598
599#define ECB_C99 (__STDC_VERSION__ >= 199901L)
600 758
601#if __cplusplus 759#if __cplusplus
602 #define ecb_inline static inline 760 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5) 761#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__ 762 #define ecb_inline static __inline__
… …
630 #define ecb_is_constant(expr) __builtin_constant_p (expr) 788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
631 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else 791#else
634 #define ecb_attribute(attrlist) 792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797
635 #define ecb_is_constant(expr) 0 798 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr) 799 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality) 800 #define ecb_prefetch(addr,rw,locality)
638#endif 801#endif
639 802
… …
643#elif ECB_GCC_VERSION(3,0) 806#elif ECB_GCC_VERSION(3,0)
644 #define ecb_decltype(x) __typeof(x) 807 #define ecb_decltype(x) __typeof(x)
645#endif 808#endif
646 809
647#define ecb_noinline ecb_attribute ((__noinline__)) 810#define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__))
649#define ecb_unused ecb_attribute ((__unused__)) 811#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__)) 812#define ecb_const ecb_attribute ((__const__))
651#define ecb_pure ecb_attribute ((__pure__)) 813#define ecb_pure ecb_attribute ((__pure__))
814
815#if ECB_C11
816 #define ecb_noreturn _Noreturn
817#else
818 #define ecb_noreturn ecb_attribute ((__noreturn__))
819#endif
652 820
653#if ECB_GCC_VERSION(4,3) 821#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__)) 822 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__)) 823 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__)) 824 #define ecb_cold ecb_attribute ((__cold__))
… …
747 915
748 return r + ecb_ld32 (x); 916 return r + ecb_ld32 (x);
749 } 917 }
750#endif 918#endif
751 919
920ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
921ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
922ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
923ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
924
925ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
926ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
927{
928 return ( (x * 0x0802U & 0x22110U)
929 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
930}
931
932ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
933ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
934{
935 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
936 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
937 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
938 x = ( x >> 8 ) | ( x << 8);
939
940 return x;
941}
942
943ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
944ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
945{
946 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
947 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
948 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
949 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
950 x = ( x >> 16 ) | ( x << 16);
951
952 return x;
953}
954
752/* popcount64 is only available on 64 bit cpus as gcc builtin */ 955/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */ 956/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 957ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
755ecb_function_ int 958ecb_function_ int
756ecb_popcount64 (uint64_t x) 959ecb_popcount64 (uint64_t x)
… …
805 1008
806#if ECB_GCC_VERSION(4,5) 1009#if ECB_GCC_VERSION(4,5)
807 #define ecb_unreachable() __builtin_unreachable () 1010 #define ecb_unreachable() __builtin_unreachable ()
808#else 1011#else
809 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1012 /* this seems to work fine, but gcc always emits a warning for it :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1013 ecb_inline void ecb_unreachable (void) ecb_noreturn;
811 ecb_function_ void ecb_unreachable (void) { } 1014 ecb_inline void ecb_unreachable (void) { }
812#endif 1015#endif
813 1016
814/* try to tell the compiler that some condition is definitely true */ 1017/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1018#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
816 1019
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1020ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
818ecb_function_ unsigned char 1021ecb_inline unsigned char
819ecb_byteorder_helper (void) 1022ecb_byteorder_helper (void)
820{ 1023{
821 const uint32_t u = 0x11223344; 1024 /* the union code still generates code under pressure in gcc, */
822 return *(unsigned char *)&u; 1025 /* but less than using pointers, and always seems to */
1026 /* successfully return a constant. */
1027 /* the reason why we have this horrible preprocessor mess */
1028 /* is to avoid it in all cases, at least on common architectures */
1029 /* or when using a recent enough gcc version (>= 4.6) */
1030#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1031 return 0x44;
1032#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1033 return 0x44;
1034#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1035 return 0x11;
1036#else
1037 union
1038 {
1039 uint32_t i;
1040 uint8_t c;
1041 } u = { 0x11223344 };
1042 return u.c;
1043#endif
823} 1044}
824 1045
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1046ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
826ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1047ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1048ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
828ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1049ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
829 1050
830#if ECB_GCC_VERSION(3,0) || ECB_C99 1051#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1052 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
832#else 1053#else
833 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1054 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1055#endif
1056
1057#if __cplusplus
1058 template<typename T>
1059 static inline T ecb_div_rd (T val, T div)
1060 {
1061 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1062 }
1063 template<typename T>
1064 static inline T ecb_div_ru (T val, T div)
1065 {
1066 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1067 }
1068#else
1069 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1070 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
834#endif 1071#endif
835 1072
836#if ecb_cplusplus_does_not_suck 1073#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1074 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N> 1075 template<typename T, int N>
… …
842 } 1079 }
843#else 1080#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1081 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif 1082#endif
846 1083
1084/*******************************************************************************/
1085/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1086
1087/* basically, everything uses "ieee pure-endian" floating point numbers */
1088/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1089#if 0 \
1090 || __i386 || __i386__ \
1091 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1092 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1093 || defined __s390__ || defined __s390x__ \
1094 || defined __mips__ \
1095 || defined __alpha__ \
1096 || defined __hppa__ \
1097 || defined __ia64__ \
1098 || defined __m68k__ \
1099 || defined __m88k__ \
1100 || defined __sh__ \
1101 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1102 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1103 || defined __aarch64__
1104 #define ECB_STDFP 1
1105 #include <string.h> /* for memcpy */
1106#else
1107 #define ECB_STDFP 0
1108#endif
1109
1110#ifndef ECB_NO_LIBM
1111
1112 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1113
1114 /* only the oldest of old doesn't have this one. solaris. */
1115 #ifdef INFINITY
1116 #define ECB_INFINITY INFINITY
1117 #else
1118 #define ECB_INFINITY HUGE_VAL
1119 #endif
1120
1121 #ifdef NAN
1122 #define ECB_NAN NAN
1123 #else
1124 #define ECB_NAN ECB_INFINITY
1125 #endif
1126
1127 /* converts an ieee half/binary16 to a float */
1128 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1129 ecb_function_ float
1130 ecb_binary16_to_float (uint16_t x)
1131 {
1132 int e = (x >> 10) & 0x1f;
1133 int m = x & 0x3ff;
1134 float r;
1135
1136 if (!e ) r = ldexpf (m , -24);
1137 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1138 else if (m ) r = ECB_NAN;
1139 else r = ECB_INFINITY;
1140
1141 return x & 0x8000 ? -r : r;
1142 }
1143
1144 /* convert a float to ieee single/binary32 */
1145 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1146 ecb_function_ uint32_t
1147 ecb_float_to_binary32 (float x)
1148 {
1149 uint32_t r;
1150
1151 #if ECB_STDFP
1152 memcpy (&r, &x, 4);
1153 #else
1154 /* slow emulation, works for anything but -0 */
1155 uint32_t m;
1156 int e;
1157
1158 if (x == 0e0f ) return 0x00000000U;
1159 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1160 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1161 if (x != x ) return 0x7fbfffffU;
1162
1163 m = frexpf (x, &e) * 0x1000000U;
1164
1165 r = m & 0x80000000U;
1166
1167 if (r)
1168 m = -m;
1169
1170 if (e <= -126)
1171 {
1172 m &= 0xffffffU;
1173 m >>= (-125 - e);
1174 e = -126;
1175 }
1176
1177 r |= (e + 126) << 23;
1178 r |= m & 0x7fffffU;
1179 #endif
1180
1181 return r;
1182 }
1183
1184 /* converts an ieee single/binary32 to a float */
1185 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1186 ecb_function_ float
1187 ecb_binary32_to_float (uint32_t x)
1188 {
1189 float r;
1190
1191 #if ECB_STDFP
1192 memcpy (&r, &x, 4);
1193 #else
1194 /* emulation, only works for normals and subnormals and +0 */
1195 int neg = x >> 31;
1196 int e = (x >> 23) & 0xffU;
1197
1198 x &= 0x7fffffU;
1199
1200 if (e)
1201 x |= 0x800000U;
1202 else
1203 e = 1;
1204
1205 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1206 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1207
1208 r = neg ? -r : r;
1209 #endif
1210
1211 return r;
1212 }
1213
1214 /* convert a double to ieee double/binary64 */
1215 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1216 ecb_function_ uint64_t
1217 ecb_double_to_binary64 (double x)
1218 {
1219 uint64_t r;
1220
1221 #if ECB_STDFP
1222 memcpy (&r, &x, 8);
1223 #else
1224 /* slow emulation, works for anything but -0 */
1225 uint64_t m;
1226 int e;
1227
1228 if (x == 0e0 ) return 0x0000000000000000U;
1229 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1230 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1231 if (x != x ) return 0X7ff7ffffffffffffU;
1232
1233 m = frexp (x, &e) * 0x20000000000000U;
1234
1235 r = m & 0x8000000000000000;;
1236
1237 if (r)
1238 m = -m;
1239
1240 if (e <= -1022)
1241 {
1242 m &= 0x1fffffffffffffU;
1243 m >>= (-1021 - e);
1244 e = -1022;
1245 }
1246
1247 r |= ((uint64_t)(e + 1022)) << 52;
1248 r |= m & 0xfffffffffffffU;
1249 #endif
1250
1251 return r;
1252 }
1253
1254 /* converts an ieee double/binary64 to a double */
1255 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1256 ecb_function_ double
1257 ecb_binary64_to_double (uint64_t x)
1258 {
1259 double r;
1260
1261 #if ECB_STDFP
1262 memcpy (&r, &x, 8);
1263 #else
1264 /* emulation, only works for normals and subnormals and +0 */
1265 int neg = x >> 63;
1266 int e = (x >> 52) & 0x7ffU;
1267
1268 x &= 0xfffffffffffffU;
1269
1270 if (e)
1271 x |= 0x10000000000000U;
1272 else
1273 e = 1;
1274
1275 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1276 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1277
1278 r = neg ? -r : r;
1279 #endif
1280
1281 return r;
1282 }
1283
1284#endif
1285
847#endif 1286#endif
848 1287
849/* ECB.H END */ 1288/* ECB.H END */
1289
1290#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1291/* if your architecture doesn't need memory fences, e.g. because it is
1292 * single-cpu/core, or if you use libev in a project that doesn't use libev
1293 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1294 * libev, in which cases the memory fences become nops.
1295 * alternatively, you can remove this #error and link against libpthread,
1296 * which will then provide the memory fences.
1297 */
1298# error "memory fences not defined for your architecture, please report"
1299#endif
1300
1301#ifndef ECB_MEMORY_FENCE
1302# define ECB_MEMORY_FENCE do { } while (0)
1303# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1304# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1305#endif
850 1306
851#define expect_false(cond) ecb_expect_false (cond) 1307#define expect_false(cond) ecb_expect_false (cond)
852#define expect_true(cond) ecb_expect_true (cond) 1308#define expect_true(cond) ecb_expect_true (cond)
853#define noinline ecb_noinline 1309#define noinline ecb_noinline
854 1310
… …
1000{ 1456{
1001 write (STDERR_FILENO, msg, strlen (msg)); 1457 write (STDERR_FILENO, msg, strlen (msg));
1002} 1458}
1003#endif 1459#endif
1004 1460
1005static void (*syserr_cb)(const char *msg); 1461static void (*syserr_cb)(const char *msg) EV_THROW;
1006 1462
1007void ecb_cold 1463void ecb_cold
1008ev_set_syserr_cb (void (*cb)(const char *msg)) 1464ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1009{ 1465{
1010 syserr_cb = cb; 1466 syserr_cb = cb;
1011} 1467}
1012 1468
1013static void noinline ecb_cold 1469static void noinline ecb_cold
… …
1031 abort (); 1487 abort ();
1032 } 1488 }
1033} 1489}
1034 1490
1035static void * 1491static void *
1036ev_realloc_emul (void *ptr, long size) 1492ev_realloc_emul (void *ptr, long size) EV_THROW
1037{ 1493{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
1041 /* some systems, notably openbsd and darwin, fail to properly 1494 /* some systems, notably openbsd and darwin, fail to properly
1042 * implement realloc (x, 0) (as required by both ansi c-89 and 1495 * implement realloc (x, 0) (as required by both ansi c-89 and
1043 * the single unix specification, so work around them here. 1496 * the single unix specification, so work around them here.
1497 * recently, also (at least) fedora and debian started breaking it,
1498 * despite documenting it otherwise.
1044 */ 1499 */
1045 1500
1046 if (size) 1501 if (size)
1047 return realloc (ptr, size); 1502 return realloc (ptr, size);
1048 1503
1049 free (ptr); 1504 free (ptr);
1050 return 0; 1505 return 0;
1051#endif
1052} 1506}
1053 1507
1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1508static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1055 1509
1056void ecb_cold 1510void ecb_cold
1057ev_set_allocator (void *(*cb)(void *ptr, long size)) 1511ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1058{ 1512{
1059 alloc = cb; 1513 alloc = cb;
1060} 1514}
1061 1515
1062inline_speed void * 1516inline_speed void *
… …
1150 #undef VAR 1604 #undef VAR
1151 }; 1605 };
1152 #include "ev_wrap.h" 1606 #include "ev_wrap.h"
1153 1607
1154 static struct ev_loop default_loop_struct; 1608 static struct ev_loop default_loop_struct;
1155 struct ev_loop *ev_default_loop_ptr; 1609 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1156 1610
1157#else 1611#else
1158 1612
1159 ev_tstamp ev_rt_now; 1613 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1160 #define VAR(name,decl) static decl; 1614 #define VAR(name,decl) static decl;
1161 #include "ev_vars.h" 1615 #include "ev_vars.h"
1162 #undef VAR 1616 #undef VAR
1163 1617
1164 static int ev_default_loop_ptr; 1618 static int ev_default_loop_ptr;
… …
1179 1633
1180/*****************************************************************************/ 1634/*****************************************************************************/
1181 1635
1182#ifndef EV_HAVE_EV_TIME 1636#ifndef EV_HAVE_EV_TIME
1183ev_tstamp 1637ev_tstamp
1184ev_time (void) 1638ev_time (void) EV_THROW
1185{ 1639{
1186#if EV_USE_REALTIME 1640#if EV_USE_REALTIME
1187 if (expect_true (have_realtime)) 1641 if (expect_true (have_realtime))
1188 { 1642 {
1189 struct timespec ts; 1643 struct timespec ts;
… …
1213 return ev_time (); 1667 return ev_time ();
1214} 1668}
1215 1669
1216#if EV_MULTIPLICITY 1670#if EV_MULTIPLICITY
1217ev_tstamp 1671ev_tstamp
1218ev_now (EV_P) 1672ev_now (EV_P) EV_THROW
1219{ 1673{
1220 return ev_rt_now; 1674 return ev_rt_now;
1221} 1675}
1222#endif 1676#endif
1223 1677
1224void 1678void
1225ev_sleep (ev_tstamp delay) 1679ev_sleep (ev_tstamp delay) EV_THROW
1226{ 1680{
1227 if (delay > 0.) 1681 if (delay > 0.)
1228 { 1682 {
1229#if EV_USE_NANOSLEEP 1683#if EV_USE_NANOSLEEP
1230 struct timespec ts; 1684 struct timespec ts;
1231 1685
1232 EV_TS_SET (ts, delay); 1686 EV_TS_SET (ts, delay);
1233 nanosleep (&ts, 0); 1687 nanosleep (&ts, 0);
1234#elif defined(_WIN32) 1688#elif defined _WIN32
1235 Sleep ((unsigned long)(delay * 1e3)); 1689 Sleep ((unsigned long)(delay * 1e3));
1236#else 1690#else
1237 struct timeval tv; 1691 struct timeval tv;
1238 1692
1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1693 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1258 1712
1259 do 1713 do
1260 ncur <<= 1; 1714 ncur <<= 1;
1261 while (cnt > ncur); 1715 while (cnt > ncur);
1262 1716
1263 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1717 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1264 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1718 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1265 { 1719 {
1266 ncur *= elem; 1720 ncur *= elem;
1267 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1721 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1268 ncur = ncur - sizeof (void *) * 4; 1722 ncur = ncur - sizeof (void *) * 4;
… …
1311pendingcb (EV_P_ ev_prepare *w, int revents) 1765pendingcb (EV_P_ ev_prepare *w, int revents)
1312{ 1766{
1313} 1767}
1314 1768
1315void noinline 1769void noinline
1316ev_feed_event (EV_P_ void *w, int revents) 1770ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1317{ 1771{
1318 W w_ = (W)w; 1772 W w_ = (W)w;
1319 int pri = ABSPRI (w_); 1773 int pri = ABSPRI (w_);
1320 1774
1321 if (expect_false (w_->pending)) 1775 if (expect_false (w_->pending))
… …
1325 w_->pending = ++pendingcnt [pri]; 1779 w_->pending = ++pendingcnt [pri];
1326 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1780 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1327 pendings [pri][w_->pending - 1].w = w_; 1781 pendings [pri][w_->pending - 1].w = w_;
1328 pendings [pri][w_->pending - 1].events = revents; 1782 pendings [pri][w_->pending - 1].events = revents;
1329 } 1783 }
1784
1785 pendingpri = NUMPRI - 1;
1330} 1786}
1331 1787
1332inline_speed void 1788inline_speed void
1333feed_reverse (EV_P_ W w) 1789feed_reverse (EV_P_ W w)
1334{ 1790{
… …
1380 if (expect_true (!anfd->reify)) 1836 if (expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents); 1837 fd_event_nocheck (EV_A_ fd, revents);
1382} 1838}
1383 1839
1384void 1840void
1385ev_feed_fd_event (EV_P_ int fd, int revents) 1841ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1386{ 1842{
1387 if (fd >= 0 && fd < anfdmax) 1843 if (fd >= 0 && fd < anfdmax)
1388 fd_event_nocheck (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
1389} 1845}
1390 1846
… …
1709static void noinline ecb_cold 2165static void noinline ecb_cold
1710evpipe_init (EV_P) 2166evpipe_init (EV_P)
1711{ 2167{
1712 if (!ev_is_active (&pipe_w)) 2168 if (!ev_is_active (&pipe_w))
1713 { 2169 {
2170 int fds [2];
2171
1714# if EV_USE_EVENTFD 2172# if EV_USE_EVENTFD
2173 fds [0] = -1;
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2174 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL) 2175 if (fds [1] < 0 && errno == EINVAL)
1717 evfd = eventfd (0, 0); 2176 fds [1] = eventfd (0, 0);
1718 2177
1719 if (evfd >= 0) 2178 if (fds [1] < 0)
2179# endif
1720 { 2180 {
2181 while (pipe (fds))
2182 ev_syserr ("(libev) error creating signal/async pipe");
2183
2184 fd_intern (fds [0]);
2185 }
2186
1721 evpipe [0] = -1; 2187 evpipe [0] = fds [0];
1722 fd_intern (evfd); /* doing it twice doesn't hurt */ 2188
1723 ev_io_set (&pipe_w, evfd, EV_READ); 2189 if (evpipe [1] < 0)
2190 evpipe [1] = fds [1]; /* first call, set write fd */
2191 else
2192 {
2193 /* on subsequent calls, do not change evpipe [1] */
2194 /* so that evpipe_write can always rely on its value. */
2195 /* this branch does not do anything sensible on windows, */
2196 /* so must not be executed on windows */
2197
2198 dup2 (fds [1], evpipe [1]);
2199 close (fds [1]);
2200 }
2201
2202 fd_intern (evpipe [1]);
2203
2204 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2205 ev_io_start (EV_A_ &pipe_w);
2206 ev_unref (EV_A); /* watcher should not keep loop alive */
2207 }
2208}
2209
2210inline_speed void
2211evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2212{
2213 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2214
2215 if (expect_true (*flag))
2216 return;
2217
2218 *flag = 1;
2219 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2220
2221 pipe_write_skipped = 1;
2222
2223 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2224
2225 if (pipe_write_wanted)
2226 {
2227 int old_errno;
2228
2229 pipe_write_skipped = 0;
2230 ECB_MEMORY_FENCE_RELEASE;
2231
2232 old_errno = errno; /* save errno because write will clobber it */
2233
2234#if EV_USE_EVENTFD
2235 if (evpipe [0] < 0)
2236 {
2237 uint64_t counter = 1;
2238 write (evpipe [1], &counter, sizeof (uint64_t));
1724 } 2239 }
1725 else 2240 else
1726# endif 2241#endif
1727 { 2242 {
1728 while (pipe (evpipe)) 2243#ifdef _WIN32
1729 ev_syserr ("(libev) error creating signal/async pipe"); 2244 WSABUF buf;
1730 2245 DWORD sent;
1731 fd_intern (evpipe [0]); 2246 buf.buf = &buf;
1732 fd_intern (evpipe [1]); 2247 buf.len = 1;
1733 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2248 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1734 } 2249#else
1735
1736 ev_io_start (EV_A_ &pipe_w);
1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1738 }
1739}
1740
1741inline_speed void
1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1743{
1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1761 old_errno = errno; /* save errno because write will clobber it */
1762
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 {
1766 uint64_t counter = 1;
1767 write (evfd, &counter, sizeof (uint64_t));
1768 }
1769 else
1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1777 write (evpipe [1], &(evpipe [1]), 1); 2250 write (evpipe [1], &(evpipe [1]), 1);
2251#endif
1778 } 2252 }
1779 2253
1780 errno = old_errno; 2254 errno = old_errno;
1781 } 2255 }
1782} 2256}
… …
1789 int i; 2263 int i;
1790 2264
1791 if (revents & EV_READ) 2265 if (revents & EV_READ)
1792 { 2266 {
1793#if EV_USE_EVENTFD 2267#if EV_USE_EVENTFD
1794 if (evfd >= 0) 2268 if (evpipe [0] < 0)
1795 { 2269 {
1796 uint64_t counter; 2270 uint64_t counter;
1797 read (evfd, &counter, sizeof (uint64_t)); 2271 read (evpipe [1], &counter, sizeof (uint64_t));
1798 } 2272 }
1799 else 2273 else
1800#endif 2274#endif
1801 { 2275 {
1802 char dummy; 2276 char dummy[4];
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2277#ifdef _WIN32
2278 WSABUF buf;
2279 DWORD recvd;
2280 DWORD flags = 0;
2281 buf.buf = dummy;
2282 buf.len = sizeof (dummy);
2283 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2284#else
1804 read (evpipe [0], &dummy, 1); 2285 read (evpipe [0], &dummy, sizeof (dummy));
2286#endif
1805 } 2287 }
1806 } 2288 }
1807 2289
1808 pipe_write_skipped = 0; 2290 pipe_write_skipped = 0;
2291
2292 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1809 2293
1810#if EV_SIGNAL_ENABLE 2294#if EV_SIGNAL_ENABLE
1811 if (sig_pending) 2295 if (sig_pending)
1812 { 2296 {
1813 sig_pending = 0; 2297 sig_pending = 0;
2298
2299 ECB_MEMORY_FENCE;
1814 2300
1815 for (i = EV_NSIG - 1; i--; ) 2301 for (i = EV_NSIG - 1; i--; )
1816 if (expect_false (signals [i].pending)) 2302 if (expect_false (signals [i].pending))
1817 ev_feed_signal_event (EV_A_ i + 1); 2303 ev_feed_signal_event (EV_A_ i + 1);
1818 } 2304 }
… …
1820 2306
1821#if EV_ASYNC_ENABLE 2307#if EV_ASYNC_ENABLE
1822 if (async_pending) 2308 if (async_pending)
1823 { 2309 {
1824 async_pending = 0; 2310 async_pending = 0;
2311
2312 ECB_MEMORY_FENCE;
1825 2313
1826 for (i = asynccnt; i--; ) 2314 for (i = asynccnt; i--; )
1827 if (asyncs [i]->sent) 2315 if (asyncs [i]->sent)
1828 { 2316 {
1829 asyncs [i]->sent = 0; 2317 asyncs [i]->sent = 0;
2318 ECB_MEMORY_FENCE_RELEASE;
1830 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2319 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1831 } 2320 }
1832 } 2321 }
1833#endif 2322#endif
1834} 2323}
1835 2324
1836/*****************************************************************************/ 2325/*****************************************************************************/
1837 2326
1838void 2327void
1839ev_feed_signal (int signum) 2328ev_feed_signal (int signum) EV_THROW
1840{ 2329{
1841#if EV_MULTIPLICITY 2330#if EV_MULTIPLICITY
2331 EV_P;
2332 ECB_MEMORY_FENCE_ACQUIRE;
1842 EV_P = signals [signum - 1].loop; 2333 EV_A = signals [signum - 1].loop;
1843 2334
1844 if (!EV_A) 2335 if (!EV_A)
1845 return; 2336 return;
1846#endif 2337#endif
1847 2338
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1; 2339 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending); 2340 evpipe_write (EV_A_ &sig_pending);
1853} 2341}
1854 2342
1855static void 2343static void
… …
1861 2349
1862 ev_feed_signal (signum); 2350 ev_feed_signal (signum);
1863} 2351}
1864 2352
1865void noinline 2353void noinline
1866ev_feed_signal_event (EV_P_ int signum) 2354ev_feed_signal_event (EV_P_ int signum) EV_THROW
1867{ 2355{
1868 WL w; 2356 WL w;
1869 2357
1870 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2358 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1871 return; 2359 return;
1872 2360
1873 --signum; 2361 --signum;
1874 2362
1875#if EV_MULTIPLICITY 2363#if EV_MULTIPLICITY
… …
1879 if (expect_false (signals [signum].loop != EV_A)) 2367 if (expect_false (signals [signum].loop != EV_A))
1880 return; 2368 return;
1881#endif 2369#endif
1882 2370
1883 signals [signum].pending = 0; 2371 signals [signum].pending = 0;
2372 ECB_MEMORY_FENCE_RELEASE;
1884 2373
1885 for (w = signals [signum].head; w; w = w->next) 2374 for (w = signals [signum].head; w; w = w->next)
1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2375 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1887} 2376}
1888 2377
… …
1987#if EV_USE_SELECT 2476#if EV_USE_SELECT
1988# include "ev_select.c" 2477# include "ev_select.c"
1989#endif 2478#endif
1990 2479
1991int ecb_cold 2480int ecb_cold
1992ev_version_major (void) 2481ev_version_major (void) EV_THROW
1993{ 2482{
1994 return EV_VERSION_MAJOR; 2483 return EV_VERSION_MAJOR;
1995} 2484}
1996 2485
1997int ecb_cold 2486int ecb_cold
1998ev_version_minor (void) 2487ev_version_minor (void) EV_THROW
1999{ 2488{
2000 return EV_VERSION_MINOR; 2489 return EV_VERSION_MINOR;
2001} 2490}
2002 2491
2003/* return true if we are running with elevated privileges and should ignore env variables */ 2492/* return true if we are running with elevated privileges and should ignore env variables */
… …
2011 || getgid () != getegid (); 2500 || getgid () != getegid ();
2012#endif 2501#endif
2013} 2502}
2014 2503
2015unsigned int ecb_cold 2504unsigned int ecb_cold
2016ev_supported_backends (void) 2505ev_supported_backends (void) EV_THROW
2017{ 2506{
2018 unsigned int flags = 0; 2507 unsigned int flags = 0;
2019 2508
2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2021 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2025 2514
2026 return flags; 2515 return flags;
2027} 2516}
2028 2517
2029unsigned int ecb_cold 2518unsigned int ecb_cold
2030ev_recommended_backends (void) 2519ev_recommended_backends (void) EV_THROW
2031{ 2520{
2032 unsigned int flags = ev_supported_backends (); 2521 unsigned int flags = ev_supported_backends ();
2033 2522
2034#ifndef __NetBSD__ 2523#ifndef __NetBSD__
2035 /* kqueue is borked on everything but netbsd apparently */ 2524 /* kqueue is borked on everything but netbsd apparently */
… …
2047 2536
2048 return flags; 2537 return flags;
2049} 2538}
2050 2539
2051unsigned int ecb_cold 2540unsigned int ecb_cold
2052ev_embeddable_backends (void) 2541ev_embeddable_backends (void) EV_THROW
2053{ 2542{
2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2055 2544
2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2546 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2059 2548
2060 return flags; 2549 return flags;
2061} 2550}
2062 2551
2063unsigned int 2552unsigned int
2064ev_backend (EV_P) 2553ev_backend (EV_P) EV_THROW
2065{ 2554{
2066 return backend; 2555 return backend;
2067} 2556}
2068 2557
2069#if EV_FEATURE_API 2558#if EV_FEATURE_API
2070unsigned int 2559unsigned int
2071ev_iteration (EV_P) 2560ev_iteration (EV_P) EV_THROW
2072{ 2561{
2073 return loop_count; 2562 return loop_count;
2074} 2563}
2075 2564
2076unsigned int 2565unsigned int
2077ev_depth (EV_P) 2566ev_depth (EV_P) EV_THROW
2078{ 2567{
2079 return loop_depth; 2568 return loop_depth;
2080} 2569}
2081 2570
2082void 2571void
2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2084{ 2573{
2085 io_blocktime = interval; 2574 io_blocktime = interval;
2086} 2575}
2087 2576
2088void 2577void
2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2090{ 2579{
2091 timeout_blocktime = interval; 2580 timeout_blocktime = interval;
2092} 2581}
2093 2582
2094void 2583void
2095ev_set_userdata (EV_P_ void *data) 2584ev_set_userdata (EV_P_ void *data) EV_THROW
2096{ 2585{
2097 userdata = data; 2586 userdata = data;
2098} 2587}
2099 2588
2100void * 2589void *
2101ev_userdata (EV_P) 2590ev_userdata (EV_P) EV_THROW
2102{ 2591{
2103 return userdata; 2592 return userdata;
2104} 2593}
2105 2594
2106void 2595void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2596ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2108{ 2597{
2109 invoke_cb = invoke_pending_cb; 2598 invoke_cb = invoke_pending_cb;
2110} 2599}
2111 2600
2112void 2601void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2602ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
2114{ 2603{
2115 release_cb = release; 2604 release_cb = release;
2116 acquire_cb = acquire; 2605 acquire_cb = acquire;
2117} 2606}
2118#endif 2607#endif
2119 2608
2120/* initialise a loop structure, must be zero-initialised */ 2609/* initialise a loop structure, must be zero-initialised */
2121static void noinline ecb_cold 2610static void noinline ecb_cold
2122loop_init (EV_P_ unsigned int flags) 2611loop_init (EV_P_ unsigned int flags) EV_THROW
2123{ 2612{
2124 if (!backend) 2613 if (!backend)
2125 { 2614 {
2126 origflags = flags; 2615 origflags = flags;
2127 2616
… …
2172#if EV_ASYNC_ENABLE 2661#if EV_ASYNC_ENABLE
2173 async_pending = 0; 2662 async_pending = 0;
2174#endif 2663#endif
2175 pipe_write_skipped = 0; 2664 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0; 2665 pipe_write_wanted = 0;
2666 evpipe [0] = -1;
2667 evpipe [1] = -1;
2177#if EV_USE_INOTIFY 2668#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2669 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif 2670#endif
2180#if EV_USE_SIGNALFD 2671#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2672 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2232 EV_INVOKE_PENDING; 2723 EV_INVOKE_PENDING;
2233 } 2724 }
2234#endif 2725#endif
2235 2726
2236#if EV_CHILD_ENABLE 2727#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev)) 2728 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2238 { 2729 {
2239 ev_ref (EV_A); /* child watcher */ 2730 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev); 2731 ev_signal_stop (EV_A_ &childev);
2241 } 2732 }
2242#endif 2733#endif
… …
2244 if (ev_is_active (&pipe_w)) 2735 if (ev_is_active (&pipe_w))
2245 { 2736 {
2246 /*ev_ref (EV_A);*/ 2737 /*ev_ref (EV_A);*/
2247 /*ev_io_stop (EV_A_ &pipe_w);*/ 2738 /*ev_io_stop (EV_A_ &pipe_w);*/
2248 2739
2249#if EV_USE_EVENTFD
2250 if (evfd >= 0)
2251 close (evfd);
2252#endif
2253
2254 if (evpipe [0] >= 0)
2255 {
2256 EV_WIN32_CLOSE_FD (evpipe [0]); 2740 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2257 EV_WIN32_CLOSE_FD (evpipe [1]); 2741 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2258 }
2259 } 2742 }
2260 2743
2261#if EV_USE_SIGNALFD 2744#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w)) 2745 if (ev_is_active (&sigfd_w))
2263 close (sigfd); 2746 close (sigfd);
… …
2349#endif 2832#endif
2350#if EV_USE_INOTIFY 2833#if EV_USE_INOTIFY
2351 infy_fork (EV_A); 2834 infy_fork (EV_A);
2352#endif 2835#endif
2353 2836
2837#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2354 if (ev_is_active (&pipe_w)) 2838 if (ev_is_active (&pipe_w))
2355 { 2839 {
2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2840 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2357 2841
2358 ev_ref (EV_A); 2842 ev_ref (EV_A);
2359 ev_io_stop (EV_A_ &pipe_w); 2843 ev_io_stop (EV_A_ &pipe_w);
2360 2844
2361#if EV_USE_EVENTFD
2362 if (evfd >= 0)
2363 close (evfd);
2364#endif
2365
2366 if (evpipe [0] >= 0) 2845 if (evpipe [0] >= 0)
2367 {
2368 EV_WIN32_CLOSE_FD (evpipe [0]); 2846 EV_WIN32_CLOSE_FD (evpipe [0]);
2369 EV_WIN32_CLOSE_FD (evpipe [1]);
2370 }
2371 2847
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2373 evpipe_init (EV_A); 2848 evpipe_init (EV_A);
2374 /* now iterate over everything, in case we missed something */ 2849 /* iterate over everything, in case we missed something before */
2375 pipecb (EV_A_ &pipe_w, EV_READ); 2850 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2376#endif
2377 } 2851 }
2852#endif
2378 2853
2379 postfork = 0; 2854 postfork = 0;
2380} 2855}
2381 2856
2382#if EV_MULTIPLICITY 2857#if EV_MULTIPLICITY
2383 2858
2384struct ev_loop * ecb_cold 2859struct ev_loop * ecb_cold
2385ev_loop_new (unsigned int flags) 2860ev_loop_new (unsigned int flags) EV_THROW
2386{ 2861{
2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2862 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2388 2863
2389 memset (EV_A, 0, sizeof (struct ev_loop)); 2864 memset (EV_A, 0, sizeof (struct ev_loop));
2390 loop_init (EV_A_ flags); 2865 loop_init (EV_A_ flags);
… …
2434} 2909}
2435#endif 2910#endif
2436 2911
2437#if EV_FEATURE_API 2912#if EV_FEATURE_API
2438void ecb_cold 2913void ecb_cold
2439ev_verify (EV_P) 2914ev_verify (EV_P) EV_THROW
2440{ 2915{
2441#if EV_VERIFY 2916#if EV_VERIFY
2442 int i; 2917 int i;
2443 WL w; 2918 WL w, w2;
2444 2919
2445 assert (activecnt >= -1); 2920 assert (activecnt >= -1);
2446 2921
2447 assert (fdchangemax >= fdchangecnt); 2922 assert (fdchangemax >= fdchangecnt);
2448 for (i = 0; i < fdchangecnt; ++i) 2923 for (i = 0; i < fdchangecnt; ++i)
2449 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2924 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2450 2925
2451 assert (anfdmax >= 0); 2926 assert (anfdmax >= 0);
2452 for (i = 0; i < anfdmax; ++i) 2927 for (i = 0; i < anfdmax; ++i)
2928 {
2929 int j = 0;
2930
2453 for (w = anfds [i].head; w; w = w->next) 2931 for (w = w2 = anfds [i].head; w; w = w->next)
2454 { 2932 {
2455 verify_watcher (EV_A_ (W)w); 2933 verify_watcher (EV_A_ (W)w);
2934
2935 if (j++ & 1)
2936 {
2937 assert (("libev: io watcher list contains a loop", w != w2));
2938 w2 = w2->next;
2939 }
2940
2456 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2941 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2457 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2942 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2458 } 2943 }
2944 }
2459 2945
2460 assert (timermax >= timercnt); 2946 assert (timermax >= timercnt);
2461 verify_heap (EV_A_ timers, timercnt); 2947 verify_heap (EV_A_ timers, timercnt);
2462 2948
2463#if EV_PERIODIC_ENABLE 2949#if EV_PERIODIC_ENABLE
… …
2513#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
2514struct ev_loop * ecb_cold 3000struct ev_loop * ecb_cold
2515#else 3001#else
2516int 3002int
2517#endif 3003#endif
2518ev_default_loop (unsigned int flags) 3004ev_default_loop (unsigned int flags) EV_THROW
2519{ 3005{
2520 if (!ev_default_loop_ptr) 3006 if (!ev_default_loop_ptr)
2521 { 3007 {
2522#if EV_MULTIPLICITY 3008#if EV_MULTIPLICITY
2523 EV_P = ev_default_loop_ptr = &default_loop_struct; 3009 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2542 3028
2543 return ev_default_loop_ptr; 3029 return ev_default_loop_ptr;
2544} 3030}
2545 3031
2546void 3032void
2547ev_loop_fork (EV_P) 3033ev_loop_fork (EV_P) EV_THROW
2548{ 3034{
2549 postfork = 1; /* must be in line with ev_default_fork */ 3035 postfork = 1;
2550} 3036}
2551 3037
2552/*****************************************************************************/ 3038/*****************************************************************************/
2553 3039
2554void 3040void
… …
2556{ 3042{
2557 EV_CB_INVOKE ((W)w, revents); 3043 EV_CB_INVOKE ((W)w, revents);
2558} 3044}
2559 3045
2560unsigned int 3046unsigned int
2561ev_pending_count (EV_P) 3047ev_pending_count (EV_P) EV_THROW
2562{ 3048{
2563 int pri; 3049 int pri;
2564 unsigned int count = 0; 3050 unsigned int count = 0;
2565 3051
2566 for (pri = NUMPRI; pri--; ) 3052 for (pri = NUMPRI; pri--; )
… …
2570} 3056}
2571 3057
2572void noinline 3058void noinline
2573ev_invoke_pending (EV_P) 3059ev_invoke_pending (EV_P)
2574{ 3060{
2575 int pri; 3061 pendingpri = NUMPRI;
2576 3062
2577 for (pri = NUMPRI; pri--; ) 3063 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3064 {
3065 --pendingpri;
3066
2578 while (pendingcnt [pri]) 3067 while (pendingcnt [pendingpri])
2579 { 3068 {
2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3069 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2581 3070
2582 p->w->pending = 0; 3071 p->w->pending = 0;
2583 EV_CB_INVOKE (p->w, p->events); 3072 EV_CB_INVOKE (p->w, p->events);
2584 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2585 } 3074 }
3075 }
2586} 3076}
2587 3077
2588#if EV_IDLE_ENABLE 3078#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */ 3079/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */ 3080/* only when higher priorities are idle" logic */
… …
2680{ 3170{
2681 EV_FREQUENT_CHECK; 3171 EV_FREQUENT_CHECK;
2682 3172
2683 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3173 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2684 { 3174 {
2685 int feed_count = 0;
2686
2687 do 3175 do
2688 { 3176 {
2689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3177 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2690 3178
2691 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3179 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2825 3313
2826 mn_now = ev_rt_now; 3314 mn_now = ev_rt_now;
2827 } 3315 }
2828} 3316}
2829 3317
2830void 3318int
2831ev_run (EV_P_ int flags) 3319ev_run (EV_P_ int flags)
2832{ 3320{
2833#if EV_FEATURE_API 3321#if EV_FEATURE_API
2834 ++loop_depth; 3322 ++loop_depth;
2835#endif 3323#endif
… …
2948#endif 3436#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3437 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2950 backend_poll (EV_A_ waittime); 3438 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3439 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952 3440
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3441 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2954 3442
3443 ECB_MEMORY_FENCE_ACQUIRE;
2955 if (pipe_write_skipped) 3444 if (pipe_write_skipped)
2956 { 3445 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3446 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3447 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 } 3448 }
… …
2992 loop_done = EVBREAK_CANCEL; 3481 loop_done = EVBREAK_CANCEL;
2993 3482
2994#if EV_FEATURE_API 3483#if EV_FEATURE_API
2995 --loop_depth; 3484 --loop_depth;
2996#endif 3485#endif
3486
3487 return activecnt;
2997} 3488}
2998 3489
2999void 3490void
3000ev_break (EV_P_ int how) 3491ev_break (EV_P_ int how) EV_THROW
3001{ 3492{
3002 loop_done = how; 3493 loop_done = how;
3003} 3494}
3004 3495
3005void 3496void
3006ev_ref (EV_P) 3497ev_ref (EV_P) EV_THROW
3007{ 3498{
3008 ++activecnt; 3499 ++activecnt;
3009} 3500}
3010 3501
3011void 3502void
3012ev_unref (EV_P) 3503ev_unref (EV_P) EV_THROW
3013{ 3504{
3014 --activecnt; 3505 --activecnt;
3015} 3506}
3016 3507
3017void 3508void
3018ev_now_update (EV_P) 3509ev_now_update (EV_P) EV_THROW
3019{ 3510{
3020 time_update (EV_A_ 1e100); 3511 time_update (EV_A_ 1e100);
3021} 3512}
3022 3513
3023void 3514void
3024ev_suspend (EV_P) 3515ev_suspend (EV_P) EV_THROW
3025{ 3516{
3026 ev_now_update (EV_A); 3517 ev_now_update (EV_A);
3027} 3518}
3028 3519
3029void 3520void
3030ev_resume (EV_P) 3521ev_resume (EV_P) EV_THROW
3031{ 3522{
3032 ev_tstamp mn_prev = mn_now; 3523 ev_tstamp mn_prev = mn_now;
3033 3524
3034 ev_now_update (EV_A); 3525 ev_now_update (EV_A);
3035 timers_reschedule (EV_A_ mn_now - mn_prev); 3526 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3074 w->pending = 0; 3565 w->pending = 0;
3075 } 3566 }
3076} 3567}
3077 3568
3078int 3569int
3079ev_clear_pending (EV_P_ void *w) 3570ev_clear_pending (EV_P_ void *w) EV_THROW
3080{ 3571{
3081 W w_ = (W)w; 3572 W w_ = (W)w;
3082 int pending = w_->pending; 3573 int pending = w_->pending;
3083 3574
3084 if (expect_true (pending)) 3575 if (expect_true (pending))
… …
3117} 3608}
3118 3609
3119/*****************************************************************************/ 3610/*****************************************************************************/
3120 3611
3121void noinline 3612void noinline
3122ev_io_start (EV_P_ ev_io *w) 3613ev_io_start (EV_P_ ev_io *w) EV_THROW
3123{ 3614{
3124 int fd = w->fd; 3615 int fd = w->fd;
3125 3616
3126 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
3127 return; 3618 return;
… …
3133 3624
3134 ev_start (EV_A_ (W)w, 1); 3625 ev_start (EV_A_ (W)w, 1);
3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3626 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3136 wlist_add (&anfds[fd].head, (WL)w); 3627 wlist_add (&anfds[fd].head, (WL)w);
3137 3628
3629 /* common bug, apparently */
3630 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3631
3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3632 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3139 w->events &= ~EV__IOFDSET; 3633 w->events &= ~EV__IOFDSET;
3140 3634
3141 EV_FREQUENT_CHECK; 3635 EV_FREQUENT_CHECK;
3142} 3636}
3143 3637
3144void noinline 3638void noinline
3145ev_io_stop (EV_P_ ev_io *w) 3639ev_io_stop (EV_P_ ev_io *w) EV_THROW
3146{ 3640{
3147 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
3148 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
3149 return; 3643 return;
3150 3644
… …
3159 3653
3160 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
3161} 3655}
3162 3656
3163void noinline 3657void noinline
3164ev_timer_start (EV_P_ ev_timer *w) 3658ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3165{ 3659{
3166 if (expect_false (ev_is_active (w))) 3660 if (expect_false (ev_is_active (w)))
3167 return; 3661 return;
3168 3662
3169 ev_at (w) += mn_now; 3663 ev_at (w) += mn_now;
… …
3183 3677
3184 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3678 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3185} 3679}
3186 3680
3187void noinline 3681void noinline
3188ev_timer_stop (EV_P_ ev_timer *w) 3682ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3189{ 3683{
3190 clear_pending (EV_A_ (W)w); 3684 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3685 if (expect_false (!ev_is_active (w)))
3192 return; 3686 return;
3193 3687
… …
3213 3707
3214 EV_FREQUENT_CHECK; 3708 EV_FREQUENT_CHECK;
3215} 3709}
3216 3710
3217void noinline 3711void noinline
3218ev_timer_again (EV_P_ ev_timer *w) 3712ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3219{ 3713{
3220 EV_FREQUENT_CHECK; 3714 EV_FREQUENT_CHECK;
3715
3716 clear_pending (EV_A_ (W)w);
3221 3717
3222 if (ev_is_active (w)) 3718 if (ev_is_active (w))
3223 { 3719 {
3224 if (w->repeat) 3720 if (w->repeat)
3225 { 3721 {
… …
3238 3734
3239 EV_FREQUENT_CHECK; 3735 EV_FREQUENT_CHECK;
3240} 3736}
3241 3737
3242ev_tstamp 3738ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w) 3739ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3244{ 3740{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3741 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3246} 3742}
3247 3743
3248#if EV_PERIODIC_ENABLE 3744#if EV_PERIODIC_ENABLE
3249void noinline 3745void noinline
3250ev_periodic_start (EV_P_ ev_periodic *w) 3746ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3251{ 3747{
3252 if (expect_false (ev_is_active (w))) 3748 if (expect_false (ev_is_active (w)))
3253 return; 3749 return;
3254 3750
3255 if (w->reschedule_cb) 3751 if (w->reschedule_cb)
… …
3275 3771
3276 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3772 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3277} 3773}
3278 3774
3279void noinline 3775void noinline
3280ev_periodic_stop (EV_P_ ev_periodic *w) 3776ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3281{ 3777{
3282 clear_pending (EV_A_ (W)w); 3778 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 3779 if (expect_false (!ev_is_active (w)))
3284 return; 3780 return;
3285 3781
… …
3303 3799
3304 EV_FREQUENT_CHECK; 3800 EV_FREQUENT_CHECK;
3305} 3801}
3306 3802
3307void noinline 3803void noinline
3308ev_periodic_again (EV_P_ ev_periodic *w) 3804ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3309{ 3805{
3310 /* TODO: use adjustheap and recalculation */ 3806 /* TODO: use adjustheap and recalculation */
3311 ev_periodic_stop (EV_A_ w); 3807 ev_periodic_stop (EV_A_ w);
3312 ev_periodic_start (EV_A_ w); 3808 ev_periodic_start (EV_A_ w);
3313} 3809}
… …
3318#endif 3814#endif
3319 3815
3320#if EV_SIGNAL_ENABLE 3816#if EV_SIGNAL_ENABLE
3321 3817
3322void noinline 3818void noinline
3323ev_signal_start (EV_P_ ev_signal *w) 3819ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3324{ 3820{
3325 if (expect_false (ev_is_active (w))) 3821 if (expect_false (ev_is_active (w)))
3326 return; 3822 return;
3327 3823
3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3824 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3330#if EV_MULTIPLICITY 3826#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops", 3827 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3828 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3333 3829
3334 signals [w->signum - 1].loop = EV_A; 3830 signals [w->signum - 1].loop = EV_A;
3831 ECB_MEMORY_FENCE_RELEASE;
3335#endif 3832#endif
3336 3833
3337 EV_FREQUENT_CHECK; 3834 EV_FREQUENT_CHECK;
3338 3835
3339#if EV_USE_SIGNALFD 3836#if EV_USE_SIGNALFD
… …
3399 3896
3400 EV_FREQUENT_CHECK; 3897 EV_FREQUENT_CHECK;
3401} 3898}
3402 3899
3403void noinline 3900void noinline
3404ev_signal_stop (EV_P_ ev_signal *w) 3901ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3405{ 3902{
3406 clear_pending (EV_A_ (W)w); 3903 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 3904 if (expect_false (!ev_is_active (w)))
3408 return; 3905 return;
3409 3906
… …
3440#endif 3937#endif
3441 3938
3442#if EV_CHILD_ENABLE 3939#if EV_CHILD_ENABLE
3443 3940
3444void 3941void
3445ev_child_start (EV_P_ ev_child *w) 3942ev_child_start (EV_P_ ev_child *w) EV_THROW
3446{ 3943{
3447#if EV_MULTIPLICITY 3944#if EV_MULTIPLICITY
3448 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3945 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3449#endif 3946#endif
3450 if (expect_false (ev_is_active (w))) 3947 if (expect_false (ev_is_active (w)))
… …
3457 3954
3458 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
3459} 3956}
3460 3957
3461void 3958void
3462ev_child_stop (EV_P_ ev_child *w) 3959ev_child_stop (EV_P_ ev_child *w) EV_THROW
3463{ 3960{
3464 clear_pending (EV_A_ (W)w); 3961 clear_pending (EV_A_ (W)w);
3465 if (expect_false (!ev_is_active (w))) 3962 if (expect_false (!ev_is_active (w)))
3466 return; 3963 return;
3467 3964
… …
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3991# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3495 3992
3496static void noinline 3993static void noinline
3497infy_add (EV_P_ ev_stat *w) 3994infy_add (EV_P_ ev_stat *w)
3498{ 3995{
3499 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); 3996 w->wd = inotify_add_watch (fs_fd, w->path,
3997 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3998 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3999 | IN_DONT_FOLLOW | IN_MASK_ADD);
3500 4000
3501 if (w->wd >= 0) 4001 if (w->wd >= 0)
3502 { 4002 {
3503 struct statfs sfs; 4003 struct statfs sfs;
3504 4004
… …
3508 4008
3509 if (!fs_2625) 4009 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4010 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs) 4011 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */ 4012 && (sfs.f_type == 0x1373 /* devfs */
4013 || sfs.f_type == 0x4006 /* fat */
4014 || sfs.f_type == 0x4d44 /* msdos */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */ 4015 || sfs.f_type == 0xEF53 /* ext2/3 */
4016 || sfs.f_type == 0x72b6 /* jffs2 */
4017 || sfs.f_type == 0x858458f6 /* ramfs */
4018 || sfs.f_type == 0x5346544e /* ntfs */
3514 || sfs.f_type == 0x3153464a /* jfs */ 4019 || sfs.f_type == 0x3153464a /* jfs */
4020 || sfs.f_type == 0x9123683e /* btrfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */ 4021 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */ 4022 || sfs.f_type == 0x01021994 /* tmpfs */
3517 || sfs.f_type == 0x58465342 /* xfs */)) 4023 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4024 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else 4025 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4026 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3521 } 4027 }
… …
3634} 4140}
3635 4141
3636inline_size int 4142inline_size int
3637infy_newfd (void) 4143infy_newfd (void)
3638{ 4144{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4145#if defined IN_CLOEXEC && defined IN_NONBLOCK
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4146 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0) 4147 if (fd >= 0)
3642 return fd; 4148 return fd;
3643#endif 4149#endif
3644 return inotify_init (); 4150 return inotify_init ();
… …
3719#else 4225#else
3720# define EV_LSTAT(p,b) lstat (p, b) 4226# define EV_LSTAT(p,b) lstat (p, b)
3721#endif 4227#endif
3722 4228
3723void 4229void
3724ev_stat_stat (EV_P_ ev_stat *w) 4230ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3725{ 4231{
3726 if (lstat (w->path, &w->attr) < 0) 4232 if (lstat (w->path, &w->attr) < 0)
3727 w->attr.st_nlink = 0; 4233 w->attr.st_nlink = 0;
3728 else if (!w->attr.st_nlink) 4234 else if (!w->attr.st_nlink)
3729 w->attr.st_nlink = 1; 4235 w->attr.st_nlink = 1;
… …
3768 ev_feed_event (EV_A_ w, EV_STAT); 4274 ev_feed_event (EV_A_ w, EV_STAT);
3769 } 4275 }
3770} 4276}
3771 4277
3772void 4278void
3773ev_stat_start (EV_P_ ev_stat *w) 4279ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3774{ 4280{
3775 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3776 return; 4282 return;
3777 4283
3778 ev_stat_stat (EV_A_ w); 4284 ev_stat_stat (EV_A_ w);
… …
3799 4305
3800 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3801} 4307}
3802 4308
3803void 4309void
3804ev_stat_stop (EV_P_ ev_stat *w) 4310ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3805{ 4311{
3806 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3807 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3808 return; 4314 return;
3809 4315
… …
3825} 4331}
3826#endif 4332#endif
3827 4333
3828#if EV_IDLE_ENABLE 4334#if EV_IDLE_ENABLE
3829void 4335void
3830ev_idle_start (EV_P_ ev_idle *w) 4336ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3831{ 4337{
3832 if (expect_false (ev_is_active (w))) 4338 if (expect_false (ev_is_active (w)))
3833 return; 4339 return;
3834 4340
3835 pri_adjust (EV_A_ (W)w); 4341 pri_adjust (EV_A_ (W)w);
… …
3848 4354
3849 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3850} 4356}
3851 4357
3852void 4358void
3853ev_idle_stop (EV_P_ ev_idle *w) 4359ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3854{ 4360{
3855 clear_pending (EV_A_ (W)w); 4361 clear_pending (EV_A_ (W)w);
3856 if (expect_false (!ev_is_active (w))) 4362 if (expect_false (!ev_is_active (w)))
3857 return; 4363 return;
3858 4364
… …
3872} 4378}
3873#endif 4379#endif
3874 4380
3875#if EV_PREPARE_ENABLE 4381#if EV_PREPARE_ENABLE
3876void 4382void
3877ev_prepare_start (EV_P_ ev_prepare *w) 4383ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3878{ 4384{
3879 if (expect_false (ev_is_active (w))) 4385 if (expect_false (ev_is_active (w)))
3880 return; 4386 return;
3881 4387
3882 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
… …
3887 4393
3888 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3889} 4395}
3890 4396
3891void 4397void
3892ev_prepare_stop (EV_P_ ev_prepare *w) 4398ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3893{ 4399{
3894 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4401 if (expect_false (!ev_is_active (w)))
3896 return; 4402 return;
3897 4403
… …
3910} 4416}
3911#endif 4417#endif
3912 4418
3913#if EV_CHECK_ENABLE 4419#if EV_CHECK_ENABLE
3914void 4420void
3915ev_check_start (EV_P_ ev_check *w) 4421ev_check_start (EV_P_ ev_check *w) EV_THROW
3916{ 4422{
3917 if (expect_false (ev_is_active (w))) 4423 if (expect_false (ev_is_active (w)))
3918 return; 4424 return;
3919 4425
3920 EV_FREQUENT_CHECK; 4426 EV_FREQUENT_CHECK;
… …
3925 4431
3926 EV_FREQUENT_CHECK; 4432 EV_FREQUENT_CHECK;
3927} 4433}
3928 4434
3929void 4435void
3930ev_check_stop (EV_P_ ev_check *w) 4436ev_check_stop (EV_P_ ev_check *w) EV_THROW
3931{ 4437{
3932 clear_pending (EV_A_ (W)w); 4438 clear_pending (EV_A_ (W)w);
3933 if (expect_false (!ev_is_active (w))) 4439 if (expect_false (!ev_is_active (w)))
3934 return; 4440 return;
3935 4441
… …
3948} 4454}
3949#endif 4455#endif
3950 4456
3951#if EV_EMBED_ENABLE 4457#if EV_EMBED_ENABLE
3952void noinline 4458void noinline
3953ev_embed_sweep (EV_P_ ev_embed *w) 4459ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3954{ 4460{
3955 ev_run (w->other, EVRUN_NOWAIT); 4461 ev_run (w->other, EVRUN_NOWAIT);
3956} 4462}
3957 4463
3958static void 4464static void
… …
4006 ev_idle_stop (EV_A_ idle); 4512 ev_idle_stop (EV_A_ idle);
4007} 4513}
4008#endif 4514#endif
4009 4515
4010void 4516void
4011ev_embed_start (EV_P_ ev_embed *w) 4517ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4012{ 4518{
4013 if (expect_false (ev_is_active (w))) 4519 if (expect_false (ev_is_active (w)))
4014 return; 4520 return;
4015 4521
4016 { 4522 {
… …
4037 4543
4038 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
4039} 4545}
4040 4546
4041void 4547void
4042ev_embed_stop (EV_P_ ev_embed *w) 4548ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4043{ 4549{
4044 clear_pending (EV_A_ (W)w); 4550 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 4551 if (expect_false (!ev_is_active (w)))
4046 return; 4552 return;
4047 4553
… …
4057} 4563}
4058#endif 4564#endif
4059 4565
4060#if EV_FORK_ENABLE 4566#if EV_FORK_ENABLE
4061void 4567void
4062ev_fork_start (EV_P_ ev_fork *w) 4568ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4063{ 4569{
4064 if (expect_false (ev_is_active (w))) 4570 if (expect_false (ev_is_active (w)))
4065 return; 4571 return;
4066 4572
4067 EV_FREQUENT_CHECK; 4573 EV_FREQUENT_CHECK;
… …
4072 4578
4073 EV_FREQUENT_CHECK; 4579 EV_FREQUENT_CHECK;
4074} 4580}
4075 4581
4076void 4582void
4077ev_fork_stop (EV_P_ ev_fork *w) 4583ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4078{ 4584{
4079 clear_pending (EV_A_ (W)w); 4585 clear_pending (EV_A_ (W)w);
4080 if (expect_false (!ev_is_active (w))) 4586 if (expect_false (!ev_is_active (w)))
4081 return; 4587 return;
4082 4588
… …
4095} 4601}
4096#endif 4602#endif
4097 4603
4098#if EV_CLEANUP_ENABLE 4604#if EV_CLEANUP_ENABLE
4099void 4605void
4100ev_cleanup_start (EV_P_ ev_cleanup *w) 4606ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4101{ 4607{
4102 if (expect_false (ev_is_active (w))) 4608 if (expect_false (ev_is_active (w)))
4103 return; 4609 return;
4104 4610
4105 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
… …
4112 ev_unref (EV_A); 4618 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
4114} 4620}
4115 4621
4116void 4622void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w) 4623ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4118{ 4624{
4119 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
4121 return; 4627 return;
4122 4628
… …
4136} 4642}
4137#endif 4643#endif
4138 4644
4139#if EV_ASYNC_ENABLE 4645#if EV_ASYNC_ENABLE
4140void 4646void
4141ev_async_start (EV_P_ ev_async *w) 4647ev_async_start (EV_P_ ev_async *w) EV_THROW
4142{ 4648{
4143 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
4144 return; 4650 return;
4145 4651
4146 w->sent = 0; 4652 w->sent = 0;
… …
4155 4661
4156 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
4157} 4663}
4158 4664
4159void 4665void
4160ev_async_stop (EV_P_ ev_async *w) 4666ev_async_stop (EV_P_ ev_async *w) EV_THROW
4161{ 4667{
4162 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
4164 return; 4670 return;
4165 4671
… …
4176 4682
4177 EV_FREQUENT_CHECK; 4683 EV_FREQUENT_CHECK;
4178} 4684}
4179 4685
4180void 4686void
4181ev_async_send (EV_P_ ev_async *w) 4687ev_async_send (EV_P_ ev_async *w) EV_THROW
4182{ 4688{
4183 w->sent = 1; 4689 w->sent = 1;
4184 evpipe_write (EV_A_ &async_pending); 4690 evpipe_write (EV_A_ &async_pending);
4185} 4691}
4186#endif 4692#endif
… …
4223 4729
4224 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4730 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4225} 4731}
4226 4732
4227void 4733void
4228ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4734ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4229{ 4735{
4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4736 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4231 4737
4232 if (expect_false (!once)) 4738 if (expect_false (!once))
4233 { 4739 {
… …
4255 4761
4256/*****************************************************************************/ 4762/*****************************************************************************/
4257 4763
4258#if EV_WALK_ENABLE 4764#if EV_WALK_ENABLE
4259void ecb_cold 4765void ecb_cold
4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4766ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4261{ 4767{
4262 int i, j; 4768 int i, j;
4263 ev_watcher_list *wl, *wn; 4769 ev_watcher_list *wl, *wn;
4264 4770
4265 if (types & (EV_IO | EV_EMBED)) 4771 if (types & (EV_IO | EV_EMBED))
… …
4371 4877
4372#if EV_MULTIPLICITY 4878#if EV_MULTIPLICITY
4373 #include "ev_wrap.h" 4879 #include "ev_wrap.h"
4374#endif 4880#endif
4375 4881
4376EV_CPP(})
4377

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