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Comparing libev/ev.c (file contents):
Revision 1.392 by root, Thu Aug 4 14:37:49 2011 UTC vs.
Revision 1.464 by root, Fri Mar 21 16:41:04 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:
… …
498 */ 511 */
499 512
500#ifndef ECB_H 513#ifndef ECB_H
501#define ECB_H 514#define ECB_H
502 515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
503#ifdef _WIN32 519#ifdef _WIN32
504 typedef signed char int8_t; 520 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 521 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 522 typedef signed short int16_t;
507 typedef unsigned short uint16_t; 523 typedef unsigned short uint16_t;
… …
512 typedef unsigned long long uint64_t; 528 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 529 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 530 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 531 typedef unsigned __int64 uint64_t;
516 #endif 532 #endif
533 #ifdef _WIN64
534 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t;
537 #else
538 #define ECB_PTRSIZE 4
539 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t;
541 #endif
517#else 542#else
518 #include <inttypes.h> 543 #include <inttypes.h>
544 #if UINTMAX_MAX > 0xffffffffU
545 #define ECB_PTRSIZE 8
546 #else
547 #define ECB_PTRSIZE 4
548 #endif
549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
557 #endif
519#endif 558#endif
520 559
521/* many compilers define _GNUC_ to some versions but then only implement 560/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 561 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 562 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 563 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 564 * 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. 565 * an issue with that they should have done it right in the first place.
527 */ 566 */
528#ifndef ECB_GCC_VERSION 567#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 569 #define ECB_GCC_VERSION(major,minor) 0
531 #else 570 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 572 #endif
534#endif 573#endif
535 574
575#define ECB_CPP (__cplusplus+0)
576#define ECB_CPP11 (__cplusplus >= 201103L)
577
578#if ECB_CPP
579 #define ECB_C 0
580 #define ECB_STDC_VERSION 0
581#else
582 #define ECB_C 1
583 #define ECB_STDC_VERSION __STDC_VERSION__
584#endif
585
586#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
587#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
588
589#if ECB_CPP
590 #define ECB_EXTERN_C extern "C"
591 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
592 #define ECB_EXTERN_C_END }
593#else
594 #define ECB_EXTERN_C extern
595 #define ECB_EXTERN_C_BEG
596 #define ECB_EXTERN_C_END
597#endif
598
536/*****************************************************************************/ 599/*****************************************************************************/
537 600
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 601/* 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 */ 602/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 603
541#if ECB_NO_THREADS || ECB_NO_SMP 604#if ECB_NO_THREADS
605 #define ECB_NO_SMP 1
606#endif
607
608#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 609 #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 610#endif
546 611
547#ifndef ECB_MEMORY_FENCE 612#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 613 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 614 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 615 #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 */ 616 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 617 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __amd64 618 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 619 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 620 #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 */ 621 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
557 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 622 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
559 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 624 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
560 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \ 625 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
561 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 627 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
562 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 628 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
563 #define ECB_MEMORY_FENCE \ 629 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
564 do { \ 630 #elif __aarch64__
565 int null = 0; \ 631 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
566 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \ 632 #elif (__sparc || __sparc__) && !__sparcv8
567 while (0) 633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
634 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
635 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
636 #elif defined __s390__ || defined __s390x__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
638 #elif defined __mips__
639 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
640 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
642 #elif defined __alpha__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
644 #elif defined __hppa__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
647 #elif defined __ia64__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
649 #elif defined __m68k__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
651 #elif defined __m88k__
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
653 #elif defined __sh__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
568 #endif 655 #endif
569 #endif 656 #endif
570#endif 657#endif
571 658
572#ifndef ECB_MEMORY_FENCE 659#ifndef ECB_MEMORY_FENCE
660 #if ECB_GCC_VERSION(4,7)
661 /* see comment below (stdatomic.h) about the C11 memory model. */
662 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
663 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
664 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
665
666 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
667 * without risking compile time errors with other compilers. We *could*
668 * define our own ecb_clang_has_feature, but I just can't be bothered to work
669 * around this shit time and again.
670 * #elif defined __clang && __has_feature (cxx_atomic)
671 * // see comment below (stdatomic.h) about the C11 memory model.
672 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
673 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
674 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
675 */
676
573 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 677 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
574 #define ECB_MEMORY_FENCE __sync_synchronize () 678 #define ECB_MEMORY_FENCE __sync_synchronize ()
575 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 679 #elif _MSC_VER >= 1500 /* VC++ 2008 */
576 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 680 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
681 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
682 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
683 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
684 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
577 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 685 #elif _MSC_VER >= 1400 /* VC++ 2005 */
578 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 686 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
579 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 687 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
580 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 688 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
581 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 689 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
582 #elif defined(_WIN32) 690 #elif defined _WIN32
583 #include <WinNT.h> 691 #include <WinNT.h>
584 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 692 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
693 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
694 #include <mbarrier.h>
695 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
696 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
697 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
698 #elif __xlC__
699 #define ECB_MEMORY_FENCE __sync ()
700 #endif
701#endif
702
703#ifndef ECB_MEMORY_FENCE
704 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
705 /* we assume that these memory fences work on all variables/all memory accesses, */
706 /* not just C11 atomics and atomic accesses */
707 #include <stdatomic.h>
708 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
709 /* any fence other than seq_cst, which isn't very efficient for us. */
710 /* Why that is, we don't know - either the C11 memory model is quite useless */
711 /* for most usages, or gcc and clang have a bug */
712 /* I *currently* lean towards the latter, and inefficiently implement */
713 /* all three of ecb's fences as a seq_cst fence */
714 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
715 /* for all __atomic_thread_fence's except seq_cst */
716 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
585 #endif 717 #endif
586#endif 718#endif
587 719
588#ifndef ECB_MEMORY_FENCE 720#ifndef ECB_MEMORY_FENCE
589 #if !ECB_AVOID_PTHREADS 721 #if !ECB_AVOID_PTHREADS
… …
601 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 733 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
602 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 734 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
603 #endif 735 #endif
604#endif 736#endif
605 737
606#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 738#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
607 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 739 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
608#endif 740#endif
609 741
610#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 742#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 743 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
612#endif 744#endif
613 745
614/*****************************************************************************/ 746/*****************************************************************************/
615
616#define ECB_C99 (__STDC_VERSION__ >= 199901L)
617 747
618#if __cplusplus 748#if __cplusplus
619 #define ecb_inline static inline 749 #define ecb_inline static inline
620#elif ECB_GCC_VERSION(2,5) 750#elif ECB_GCC_VERSION(2,5)
621 #define ecb_inline static __inline__ 751 #define ecb_inline static __inline__
… …
647 #define ecb_is_constant(expr) __builtin_constant_p (expr) 777 #define ecb_is_constant(expr) __builtin_constant_p (expr)
648 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 778 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
649 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 779 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
650#else 780#else
651 #define ecb_attribute(attrlist) 781 #define ecb_attribute(attrlist)
782
783 /* possible C11 impl for integral types
784 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
785 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
786
652 #define ecb_is_constant(expr) 0 787 #define ecb_is_constant(expr) 0
653 #define ecb_expect(expr,value) (expr) 788 #define ecb_expect(expr,value) (expr)
654 #define ecb_prefetch(addr,rw,locality) 789 #define ecb_prefetch(addr,rw,locality)
655#endif 790#endif
656 791
… …
660#elif ECB_GCC_VERSION(3,0) 795#elif ECB_GCC_VERSION(3,0)
661 #define ecb_decltype(x) __typeof(x) 796 #define ecb_decltype(x) __typeof(x)
662#endif 797#endif
663 798
664#define ecb_noinline ecb_attribute ((__noinline__)) 799#define ecb_noinline ecb_attribute ((__noinline__))
665#define ecb_noreturn ecb_attribute ((__noreturn__))
666#define ecb_unused ecb_attribute ((__unused__)) 800#define ecb_unused ecb_attribute ((__unused__))
667#define ecb_const ecb_attribute ((__const__)) 801#define ecb_const ecb_attribute ((__const__))
668#define ecb_pure ecb_attribute ((__pure__)) 802#define ecb_pure ecb_attribute ((__pure__))
803
804#if ECB_C11
805 #define ecb_noreturn _Noreturn
806#else
807 #define ecb_noreturn ecb_attribute ((__noreturn__))
808#endif
669 809
670#if ECB_GCC_VERSION(4,3) 810#if ECB_GCC_VERSION(4,3)
671 #define ecb_artificial ecb_attribute ((__artificial__)) 811 #define ecb_artificial ecb_attribute ((__artificial__))
672 #define ecb_hot ecb_attribute ((__hot__)) 812 #define ecb_hot ecb_attribute ((__hot__))
673 #define ecb_cold ecb_attribute ((__cold__)) 813 #define ecb_cold ecb_attribute ((__cold__))
… …
764 904
765 return r + ecb_ld32 (x); 905 return r + ecb_ld32 (x);
766 } 906 }
767#endif 907#endif
768 908
909ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
910ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
911ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
912ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
913
914ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
915ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
916{
917 return ( (x * 0x0802U & 0x22110U)
918 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
919}
920
921ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
922ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
923{
924 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
925 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
926 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
927 x = ( x >> 8 ) | ( x << 8);
928
929 return x;
930}
931
932ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
933ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
934{
935 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
936 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
937 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
938 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
939 x = ( x >> 16 ) | ( x << 16);
940
941 return x;
942}
943
769/* popcount64 is only available on 64 bit cpus as gcc builtin */ 944/* popcount64 is only available on 64 bit cpus as gcc builtin */
770/* so for this version we are lazy */ 945/* so for this version we are lazy */
771ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 946ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
772ecb_function_ int 947ecb_function_ int
773ecb_popcount64 (uint64_t x) 948ecb_popcount64 (uint64_t x)
… …
822 997
823#if ECB_GCC_VERSION(4,5) 998#if ECB_GCC_VERSION(4,5)
824 #define ecb_unreachable() __builtin_unreachable () 999 #define ecb_unreachable() __builtin_unreachable ()
825#else 1000#else
826 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1001 /* this seems to work fine, but gcc always emits a warning for it :/ */
827 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1002 ecb_inline void ecb_unreachable (void) ecb_noreturn;
828 ecb_function_ void ecb_unreachable (void) { } 1003 ecb_inline void ecb_unreachable (void) { }
829#endif 1004#endif
830 1005
831/* try to tell the compiler that some condition is definitely true */ 1006/* try to tell the compiler that some condition is definitely true */
832#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1007#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
833 1008
834ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1009ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
835ecb_function_ unsigned char 1010ecb_inline unsigned char
836ecb_byteorder_helper (void) 1011ecb_byteorder_helper (void)
837{ 1012{
838 const uint32_t u = 0x11223344; 1013 /* the union code still generates code under pressure in gcc, */
839 return *(unsigned char *)&u; 1014 /* but less than using pointers, and always seems to */
1015 /* successfully return a constant. */
1016 /* the reason why we have this horrible preprocessor mess */
1017 /* is to avoid it in all cases, at least on common architectures */
1018 /* or when using a recent enough gcc version (>= 4.6) */
1019#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1020 return 0x44;
1021#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1022 return 0x44;
1023#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1024 return 0x11;
1025#else
1026 union
1027 {
1028 uint32_t i;
1029 uint8_t c;
1030 } u = { 0x11223344 };
1031 return u.c;
1032#endif
840} 1033}
841 1034
842ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1035ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
843ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1036ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
844ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1037ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
845ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1038ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
846 1039
847#if ECB_GCC_VERSION(3,0) || ECB_C99 1040#if ECB_GCC_VERSION(3,0) || ECB_C99
848 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1041 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
849#else 1042#else
850 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1043 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1044#endif
1045
1046#if __cplusplus
1047 template<typename T>
1048 static inline T ecb_div_rd (T val, T div)
1049 {
1050 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1051 }
1052 template<typename T>
1053 static inline T ecb_div_ru (T val, T div)
1054 {
1055 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1056 }
1057#else
1058 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1059 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
851#endif 1060#endif
852 1061
853#if ecb_cplusplus_does_not_suck 1062#if ecb_cplusplus_does_not_suck
854 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1063 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
855 template<typename T, int N> 1064 template<typename T, int N>
… …
859 } 1068 }
860#else 1069#else
861 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1070 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
862#endif 1071#endif
863 1072
1073/*******************************************************************************/
1074/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1075
1076/* basically, everything uses "ieee pure-endian" floating point numbers */
1077/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1078#if 0 \
1079 || __i386 || __i386__ \
1080 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1081 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1082 || defined __arm__ && defined __ARM_EABI__ \
1083 || defined __s390__ || defined __s390x__ \
1084 || defined __mips__ \
1085 || defined __alpha__ \
1086 || defined __hppa__ \
1087 || defined __ia64__ \
1088 || defined __m68k__ \
1089 || defined __m88k__ \
1090 || defined __sh__ \
1091 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1092 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__))
1093 #define ECB_STDFP 1
1094 #include <string.h> /* for memcpy */
1095#else
1096 #define ECB_STDFP 0
1097#endif
1098
1099#ifndef ECB_NO_LIBM
1100
1101 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1102
1103 /* only the oldest of old doesn't have this one. solaris. */
1104 #ifdef INFINITY
1105 #define ECB_INFINITY INFINITY
1106 #else
1107 #define ECB_INFINITY HUGE_VAL
1108 #endif
1109
1110 #ifdef NAN
1111 #define ECB_NAN NAN
1112 #else
1113 #define ECB_NAN ECB_INFINITY
1114 #endif
1115
1116 /* converts an ieee half/binary16 to a float */
1117 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1118 ecb_function_ float
1119 ecb_binary16_to_float (uint16_t x)
1120 {
1121 int e = (x >> 10) & 0x1f;
1122 int m = x & 0x3ff;
1123 float r;
1124
1125 if (!e ) r = ldexpf (m , -24);
1126 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1127 else if (m ) r = ECB_NAN;
1128 else r = ECB_INFINITY;
1129
1130 return x & 0x8000 ? -r : r;
1131 }
1132
1133 /* convert a float to ieee single/binary32 */
1134 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1135 ecb_function_ uint32_t
1136 ecb_float_to_binary32 (float x)
1137 {
1138 uint32_t r;
1139
1140 #if ECB_STDFP
1141 memcpy (&r, &x, 4);
1142 #else
1143 /* slow emulation, works for anything but -0 */
1144 uint32_t m;
1145 int e;
1146
1147 if (x == 0e0f ) return 0x00000000U;
1148 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1149 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1150 if (x != x ) return 0x7fbfffffU;
1151
1152 m = frexpf (x, &e) * 0x1000000U;
1153
1154 r = m & 0x80000000U;
1155
1156 if (r)
1157 m = -m;
1158
1159 if (e <= -126)
1160 {
1161 m &= 0xffffffU;
1162 m >>= (-125 - e);
1163 e = -126;
1164 }
1165
1166 r |= (e + 126) << 23;
1167 r |= m & 0x7fffffU;
1168 #endif
1169
1170 return r;
1171 }
1172
1173 /* converts an ieee single/binary32 to a float */
1174 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1175 ecb_function_ float
1176 ecb_binary32_to_float (uint32_t x)
1177 {
1178 float r;
1179
1180 #if ECB_STDFP
1181 memcpy (&r, &x, 4);
1182 #else
1183 /* emulation, only works for normals and subnormals and +0 */
1184 int neg = x >> 31;
1185 int e = (x >> 23) & 0xffU;
1186
1187 x &= 0x7fffffU;
1188
1189 if (e)
1190 x |= 0x800000U;
1191 else
1192 e = 1;
1193
1194 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1195 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1196
1197 r = neg ? -r : r;
1198 #endif
1199
1200 return r;
1201 }
1202
1203 /* convert a double to ieee double/binary64 */
1204 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1205 ecb_function_ uint64_t
1206 ecb_double_to_binary64 (double x)
1207 {
1208 uint64_t r;
1209
1210 #if ECB_STDFP
1211 memcpy (&r, &x, 8);
1212 #else
1213 /* slow emulation, works for anything but -0 */
1214 uint64_t m;
1215 int e;
1216
1217 if (x == 0e0 ) return 0x0000000000000000U;
1218 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1219 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1220 if (x != x ) return 0X7ff7ffffffffffffU;
1221
1222 m = frexp (x, &e) * 0x20000000000000U;
1223
1224 r = m & 0x8000000000000000;;
1225
1226 if (r)
1227 m = -m;
1228
1229 if (e <= -1022)
1230 {
1231 m &= 0x1fffffffffffffU;
1232 m >>= (-1021 - e);
1233 e = -1022;
1234 }
1235
1236 r |= ((uint64_t)(e + 1022)) << 52;
1237 r |= m & 0xfffffffffffffU;
1238 #endif
1239
1240 return r;
1241 }
1242
1243 /* converts an ieee double/binary64 to a double */
1244 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1245 ecb_function_ double
1246 ecb_binary64_to_double (uint64_t x)
1247 {
1248 double r;
1249
1250 #if ECB_STDFP
1251 memcpy (&r, &x, 8);
1252 #else
1253 /* emulation, only works for normals and subnormals and +0 */
1254 int neg = x >> 63;
1255 int e = (x >> 52) & 0x7ffU;
1256
1257 x &= 0xfffffffffffffU;
1258
1259 if (e)
1260 x |= 0x10000000000000U;
1261 else
1262 e = 1;
1263
1264 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1265 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1266
1267 r = neg ? -r : r;
1268 #endif
1269
1270 return r;
1271 }
1272
1273#endif
1274
864#endif 1275#endif
865 1276
866/* ECB.H END */ 1277/* ECB.H END */
867 1278
868#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1279#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1280/* if your architecture doesn't need memory fences, e.g. because it is
1281 * single-cpu/core, or if you use libev in a project that doesn't use libev
1282 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1283 * libev, in which cases the memory fences become nops.
1284 * alternatively, you can remove this #error and link against libpthread,
1285 * which will then provide the memory fences.
1286 */
1287# error "memory fences not defined for your architecture, please report"
1288#endif
1289
869# undef ECB_MEMORY_FENCE 1290#ifndef ECB_MEMORY_FENCE
870# undef ECB_MEMORY_FENCE_ACQUIRE 1291# define ECB_MEMORY_FENCE do { } while (0)
871# undef ECB_MEMORY_FENCE_RELEASE 1292# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1293# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
872#endif 1294#endif
873 1295
874#define expect_false(cond) ecb_expect_false (cond) 1296#define expect_false(cond) ecb_expect_false (cond)
875#define expect_true(cond) ecb_expect_true (cond) 1297#define expect_true(cond) ecb_expect_true (cond)
876#define noinline ecb_noinline 1298#define noinline ecb_noinline
… …
1023{ 1445{
1024 write (STDERR_FILENO, msg, strlen (msg)); 1446 write (STDERR_FILENO, msg, strlen (msg));
1025} 1447}
1026#endif 1448#endif
1027 1449
1028static void (*syserr_cb)(const char *msg); 1450static void (*syserr_cb)(const char *msg) EV_THROW;
1029 1451
1030void ecb_cold 1452void ecb_cold
1031ev_set_syserr_cb (void (*cb)(const char *msg)) 1453ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1032{ 1454{
1033 syserr_cb = cb; 1455 syserr_cb = cb;
1034} 1456}
1035 1457
1036static void noinline ecb_cold 1458static void noinline ecb_cold
… …
1054 abort (); 1476 abort ();
1055 } 1477 }
1056} 1478}
1057 1479
1058static void * 1480static void *
1059ev_realloc_emul (void *ptr, long size) 1481ev_realloc_emul (void *ptr, long size) EV_THROW
1060{ 1482{
1061#if __GLIBC__
1062 return realloc (ptr, size);
1063#else
1064 /* some systems, notably openbsd and darwin, fail to properly 1483 /* some systems, notably openbsd and darwin, fail to properly
1065 * implement realloc (x, 0) (as required by both ansi c-89 and 1484 * implement realloc (x, 0) (as required by both ansi c-89 and
1066 * the single unix specification, so work around them here. 1485 * the single unix specification, so work around them here.
1486 * recently, also (at least) fedora and debian started breaking it,
1487 * despite documenting it otherwise.
1067 */ 1488 */
1068 1489
1069 if (size) 1490 if (size)
1070 return realloc (ptr, size); 1491 return realloc (ptr, size);
1071 1492
1072 free (ptr); 1493 free (ptr);
1073 return 0; 1494 return 0;
1074#endif
1075} 1495}
1076 1496
1077static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1497static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1078 1498
1079void ecb_cold 1499void ecb_cold
1080ev_set_allocator (void *(*cb)(void *ptr, long size)) 1500ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1081{ 1501{
1082 alloc = cb; 1502 alloc = cb;
1083} 1503}
1084 1504
1085inline_speed void * 1505inline_speed void *
… …
1173 #undef VAR 1593 #undef VAR
1174 }; 1594 };
1175 #include "ev_wrap.h" 1595 #include "ev_wrap.h"
1176 1596
1177 static struct ev_loop default_loop_struct; 1597 static struct ev_loop default_loop_struct;
1178 struct ev_loop *ev_default_loop_ptr; 1598 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1179 1599
1180#else 1600#else
1181 1601
1182 ev_tstamp ev_rt_now; 1602 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1183 #define VAR(name,decl) static decl; 1603 #define VAR(name,decl) static decl;
1184 #include "ev_vars.h" 1604 #include "ev_vars.h"
1185 #undef VAR 1605 #undef VAR
1186 1606
1187 static int ev_default_loop_ptr; 1607 static int ev_default_loop_ptr;
… …
1202 1622
1203/*****************************************************************************/ 1623/*****************************************************************************/
1204 1624
1205#ifndef EV_HAVE_EV_TIME 1625#ifndef EV_HAVE_EV_TIME
1206ev_tstamp 1626ev_tstamp
1207ev_time (void) 1627ev_time (void) EV_THROW
1208{ 1628{
1209#if EV_USE_REALTIME 1629#if EV_USE_REALTIME
1210 if (expect_true (have_realtime)) 1630 if (expect_true (have_realtime))
1211 { 1631 {
1212 struct timespec ts; 1632 struct timespec ts;
… …
1236 return ev_time (); 1656 return ev_time ();
1237} 1657}
1238 1658
1239#if EV_MULTIPLICITY 1659#if EV_MULTIPLICITY
1240ev_tstamp 1660ev_tstamp
1241ev_now (EV_P) 1661ev_now (EV_P) EV_THROW
1242{ 1662{
1243 return ev_rt_now; 1663 return ev_rt_now;
1244} 1664}
1245#endif 1665#endif
1246 1666
1247void 1667void
1248ev_sleep (ev_tstamp delay) 1668ev_sleep (ev_tstamp delay) EV_THROW
1249{ 1669{
1250 if (delay > 0.) 1670 if (delay > 0.)
1251 { 1671 {
1252#if EV_USE_NANOSLEEP 1672#if EV_USE_NANOSLEEP
1253 struct timespec ts; 1673 struct timespec ts;
1254 1674
1255 EV_TS_SET (ts, delay); 1675 EV_TS_SET (ts, delay);
1256 nanosleep (&ts, 0); 1676 nanosleep (&ts, 0);
1257#elif defined(_WIN32) 1677#elif defined _WIN32
1258 Sleep ((unsigned long)(delay * 1e3)); 1678 Sleep ((unsigned long)(delay * 1e3));
1259#else 1679#else
1260 struct timeval tv; 1680 struct timeval tv;
1261 1681
1262 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1682 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1281 1701
1282 do 1702 do
1283 ncur <<= 1; 1703 ncur <<= 1;
1284 while (cnt > ncur); 1704 while (cnt > ncur);
1285 1705
1286 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1706 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1287 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1707 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1288 { 1708 {
1289 ncur *= elem; 1709 ncur *= elem;
1290 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1710 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1291 ncur = ncur - sizeof (void *) * 4; 1711 ncur = ncur - sizeof (void *) * 4;
… …
1334pendingcb (EV_P_ ev_prepare *w, int revents) 1754pendingcb (EV_P_ ev_prepare *w, int revents)
1335{ 1755{
1336} 1756}
1337 1757
1338void noinline 1758void noinline
1339ev_feed_event (EV_P_ void *w, int revents) 1759ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1340{ 1760{
1341 W w_ = (W)w; 1761 W w_ = (W)w;
1342 int pri = ABSPRI (w_); 1762 int pri = ABSPRI (w_);
1343 1763
1344 if (expect_false (w_->pending)) 1764 if (expect_false (w_->pending))
… …
1348 w_->pending = ++pendingcnt [pri]; 1768 w_->pending = ++pendingcnt [pri];
1349 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1769 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1350 pendings [pri][w_->pending - 1].w = w_; 1770 pendings [pri][w_->pending - 1].w = w_;
1351 pendings [pri][w_->pending - 1].events = revents; 1771 pendings [pri][w_->pending - 1].events = revents;
1352 } 1772 }
1773
1774 pendingpri = NUMPRI - 1;
1353} 1775}
1354 1776
1355inline_speed void 1777inline_speed void
1356feed_reverse (EV_P_ W w) 1778feed_reverse (EV_P_ W w)
1357{ 1779{
… …
1403 if (expect_true (!anfd->reify)) 1825 if (expect_true (!anfd->reify))
1404 fd_event_nocheck (EV_A_ fd, revents); 1826 fd_event_nocheck (EV_A_ fd, revents);
1405} 1827}
1406 1828
1407void 1829void
1408ev_feed_fd_event (EV_P_ int fd, int revents) 1830ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1409{ 1831{
1410 if (fd >= 0 && fd < anfdmax) 1832 if (fd >= 0 && fd < anfdmax)
1411 fd_event_nocheck (EV_A_ fd, revents); 1833 fd_event_nocheck (EV_A_ fd, revents);
1412} 1834}
1413 1835
… …
1732static void noinline ecb_cold 2154static void noinline ecb_cold
1733evpipe_init (EV_P) 2155evpipe_init (EV_P)
1734{ 2156{
1735 if (!ev_is_active (&pipe_w)) 2157 if (!ev_is_active (&pipe_w))
1736 { 2158 {
2159 int fds [2];
2160
1737# if EV_USE_EVENTFD 2161# if EV_USE_EVENTFD
2162 fds [0] = -1;
1738 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2163 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1739 if (evfd < 0 && errno == EINVAL) 2164 if (fds [1] < 0 && errno == EINVAL)
1740 evfd = eventfd (0, 0); 2165 fds [1] = eventfd (0, 0);
1741 2166
1742 if (evfd >= 0) 2167 if (fds [1] < 0)
2168# endif
1743 { 2169 {
2170 while (pipe (fds))
2171 ev_syserr ("(libev) error creating signal/async pipe");
2172
2173 fd_intern (fds [0]);
2174 }
2175
1744 evpipe [0] = -1; 2176 evpipe [0] = fds [0];
1745 fd_intern (evfd); /* doing it twice doesn't hurt */ 2177
1746 ev_io_set (&pipe_w, evfd, EV_READ); 2178 if (evpipe [1] < 0)
2179 evpipe [1] = fds [1]; /* first call, set write fd */
2180 else
2181 {
2182 /* on subsequent calls, do not change evpipe [1] */
2183 /* so that evpipe_write can always rely on its value. */
2184 /* this branch does not do anything sensible on windows, */
2185 /* so must not be executed on windows */
2186
2187 dup2 (fds [1], evpipe [1]);
2188 close (fds [1]);
2189 }
2190
2191 fd_intern (evpipe [1]);
2192
2193 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2194 ev_io_start (EV_A_ &pipe_w);
2195 ev_unref (EV_A); /* watcher should not keep loop alive */
2196 }
2197}
2198
2199inline_speed void
2200evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2201{
2202 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2203
2204 if (expect_true (*flag))
2205 return;
2206
2207 *flag = 1;
2208 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2209
2210 pipe_write_skipped = 1;
2211
2212 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2213
2214 if (pipe_write_wanted)
2215 {
2216 int old_errno;
2217
2218 pipe_write_skipped = 0;
2219 ECB_MEMORY_FENCE_RELEASE;
2220
2221 old_errno = errno; /* save errno because write will clobber it */
2222
2223#if EV_USE_EVENTFD
2224 if (evpipe [0] < 0)
2225 {
2226 uint64_t counter = 1;
2227 write (evpipe [1], &counter, sizeof (uint64_t));
1747 } 2228 }
1748 else 2229 else
1749# endif 2230#endif
1750 { 2231 {
1751 while (pipe (evpipe)) 2232#ifdef _WIN32
1752 ev_syserr ("(libev) error creating signal/async pipe"); 2233 WSABUF buf;
1753 2234 DWORD sent;
1754 fd_intern (evpipe [0]); 2235 buf.buf = &buf;
1755 fd_intern (evpipe [1]); 2236 buf.len = 1;
1756 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2237 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1757 } 2238#else
1758
1759 ev_io_start (EV_A_ &pipe_w);
1760 ev_unref (EV_A); /* watcher should not keep loop alive */
1761 }
1762}
1763
1764inline_speed void
1765evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1766{
1767 if (expect_true (*flag))
1768 return;
1769
1770 *flag = 1;
1771
1772 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1773
1774 pipe_write_skipped = 1;
1775
1776 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1777
1778 if (pipe_write_wanted)
1779 {
1780 int old_errno;
1781
1782 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1783
1784 old_errno = errno; /* save errno because write will clobber it */
1785
1786#if EV_USE_EVENTFD
1787 if (evfd >= 0)
1788 {
1789 uint64_t counter = 1;
1790 write (evfd, &counter, sizeof (uint64_t));
1791 }
1792 else
1793#endif
1794 {
1795 /* win32 people keep sending patches that change this write() to send() */
1796 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1797 /* so when you think this write should be a send instead, please find out */
1798 /* where your send() is from - it's definitely not the microsoft send, and */
1799 /* tell me. thank you. */
1800 write (evpipe [1], &(evpipe [1]), 1); 2239 write (evpipe [1], &(evpipe [1]), 1);
2240#endif
1801 } 2241 }
1802 2242
1803 errno = old_errno; 2243 errno = old_errno;
1804 } 2244 }
1805} 2245}
… …
1812 int i; 2252 int i;
1813 2253
1814 if (revents & EV_READ) 2254 if (revents & EV_READ)
1815 { 2255 {
1816#if EV_USE_EVENTFD 2256#if EV_USE_EVENTFD
1817 if (evfd >= 0) 2257 if (evpipe [0] < 0)
1818 { 2258 {
1819 uint64_t counter; 2259 uint64_t counter;
1820 read (evfd, &counter, sizeof (uint64_t)); 2260 read (evpipe [1], &counter, sizeof (uint64_t));
1821 } 2261 }
1822 else 2262 else
1823#endif 2263#endif
1824 { 2264 {
1825 char dummy; 2265 char dummy[4];
1826 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2266#ifdef _WIN32
2267 WSABUF buf;
2268 DWORD recvd;
2269 DWORD flags = 0;
2270 buf.buf = dummy;
2271 buf.len = sizeof (dummy);
2272 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2273#else
1827 read (evpipe [0], &dummy, 1); 2274 read (evpipe [0], &dummy, sizeof (dummy));
2275#endif
1828 } 2276 }
1829 } 2277 }
1830 2278
1831 pipe_write_skipped = 0; 2279 pipe_write_skipped = 0;
2280
2281 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1832 2282
1833#if EV_SIGNAL_ENABLE 2283#if EV_SIGNAL_ENABLE
1834 if (sig_pending) 2284 if (sig_pending)
1835 { 2285 {
1836 sig_pending = 0; 2286 sig_pending = 0;
2287
2288 ECB_MEMORY_FENCE;
1837 2289
1838 for (i = EV_NSIG - 1; i--; ) 2290 for (i = EV_NSIG - 1; i--; )
1839 if (expect_false (signals [i].pending)) 2291 if (expect_false (signals [i].pending))
1840 ev_feed_signal_event (EV_A_ i + 1); 2292 ev_feed_signal_event (EV_A_ i + 1);
1841 } 2293 }
… …
1843 2295
1844#if EV_ASYNC_ENABLE 2296#if EV_ASYNC_ENABLE
1845 if (async_pending) 2297 if (async_pending)
1846 { 2298 {
1847 async_pending = 0; 2299 async_pending = 0;
2300
2301 ECB_MEMORY_FENCE;
1848 2302
1849 for (i = asynccnt; i--; ) 2303 for (i = asynccnt; i--; )
1850 if (asyncs [i]->sent) 2304 if (asyncs [i]->sent)
1851 { 2305 {
1852 asyncs [i]->sent = 0; 2306 asyncs [i]->sent = 0;
2307 ECB_MEMORY_FENCE_RELEASE;
1853 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2308 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1854 } 2309 }
1855 } 2310 }
1856#endif 2311#endif
1857} 2312}
1858 2313
1859/*****************************************************************************/ 2314/*****************************************************************************/
1860 2315
1861void 2316void
1862ev_feed_signal (int signum) 2317ev_feed_signal (int signum) EV_THROW
1863{ 2318{
1864#if EV_MULTIPLICITY 2319#if EV_MULTIPLICITY
2320 EV_P;
2321 ECB_MEMORY_FENCE_ACQUIRE;
1865 EV_P = signals [signum - 1].loop; 2322 EV_A = signals [signum - 1].loop;
1866 2323
1867 if (!EV_A) 2324 if (!EV_A)
1868 return; 2325 return;
1869#endif 2326#endif
1870 2327
1871 if (!ev_active (&pipe_w))
1872 return;
1873
1874 signals [signum - 1].pending = 1; 2328 signals [signum - 1].pending = 1;
1875 evpipe_write (EV_A_ &sig_pending); 2329 evpipe_write (EV_A_ &sig_pending);
1876} 2330}
1877 2331
1878static void 2332static void
… …
1884 2338
1885 ev_feed_signal (signum); 2339 ev_feed_signal (signum);
1886} 2340}
1887 2341
1888void noinline 2342void noinline
1889ev_feed_signal_event (EV_P_ int signum) 2343ev_feed_signal_event (EV_P_ int signum) EV_THROW
1890{ 2344{
1891 WL w; 2345 WL w;
1892 2346
1893 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2347 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1894 return; 2348 return;
1895 2349
1896 --signum; 2350 --signum;
1897 2351
1898#if EV_MULTIPLICITY 2352#if EV_MULTIPLICITY
… …
1902 if (expect_false (signals [signum].loop != EV_A)) 2356 if (expect_false (signals [signum].loop != EV_A))
1903 return; 2357 return;
1904#endif 2358#endif
1905 2359
1906 signals [signum].pending = 0; 2360 signals [signum].pending = 0;
2361 ECB_MEMORY_FENCE_RELEASE;
1907 2362
1908 for (w = signals [signum].head; w; w = w->next) 2363 for (w = signals [signum].head; w; w = w->next)
1909 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2364 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1910} 2365}
1911 2366
… …
2010#if EV_USE_SELECT 2465#if EV_USE_SELECT
2011# include "ev_select.c" 2466# include "ev_select.c"
2012#endif 2467#endif
2013 2468
2014int ecb_cold 2469int ecb_cold
2015ev_version_major (void) 2470ev_version_major (void) EV_THROW
2016{ 2471{
2017 return EV_VERSION_MAJOR; 2472 return EV_VERSION_MAJOR;
2018} 2473}
2019 2474
2020int ecb_cold 2475int ecb_cold
2021ev_version_minor (void) 2476ev_version_minor (void) EV_THROW
2022{ 2477{
2023 return EV_VERSION_MINOR; 2478 return EV_VERSION_MINOR;
2024} 2479}
2025 2480
2026/* return true if we are running with elevated privileges and should ignore env variables */ 2481/* return true if we are running with elevated privileges and should ignore env variables */
… …
2034 || getgid () != getegid (); 2489 || getgid () != getegid ();
2035#endif 2490#endif
2036} 2491}
2037 2492
2038unsigned int ecb_cold 2493unsigned int ecb_cold
2039ev_supported_backends (void) 2494ev_supported_backends (void) EV_THROW
2040{ 2495{
2041 unsigned int flags = 0; 2496 unsigned int flags = 0;
2042 2497
2043 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2044 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2048 2503
2049 return flags; 2504 return flags;
2050} 2505}
2051 2506
2052unsigned int ecb_cold 2507unsigned int ecb_cold
2053ev_recommended_backends (void) 2508ev_recommended_backends (void) EV_THROW
2054{ 2509{
2055 unsigned int flags = ev_supported_backends (); 2510 unsigned int flags = ev_supported_backends ();
2056 2511
2057#ifndef __NetBSD__ 2512#ifndef __NetBSD__
2058 /* kqueue is borked on everything but netbsd apparently */ 2513 /* kqueue is borked on everything but netbsd apparently */
… …
2070 2525
2071 return flags; 2526 return flags;
2072} 2527}
2073 2528
2074unsigned int ecb_cold 2529unsigned int ecb_cold
2075ev_embeddable_backends (void) 2530ev_embeddable_backends (void) EV_THROW
2076{ 2531{
2077 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2078 2533
2079 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2080 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2535 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2082 2537
2083 return flags; 2538 return flags;
2084} 2539}
2085 2540
2086unsigned int 2541unsigned int
2087ev_backend (EV_P) 2542ev_backend (EV_P) EV_THROW
2088{ 2543{
2089 return backend; 2544 return backend;
2090} 2545}
2091 2546
2092#if EV_FEATURE_API 2547#if EV_FEATURE_API
2093unsigned int 2548unsigned int
2094ev_iteration (EV_P) 2549ev_iteration (EV_P) EV_THROW
2095{ 2550{
2096 return loop_count; 2551 return loop_count;
2097} 2552}
2098 2553
2099unsigned int 2554unsigned int
2100ev_depth (EV_P) 2555ev_depth (EV_P) EV_THROW
2101{ 2556{
2102 return loop_depth; 2557 return loop_depth;
2103} 2558}
2104 2559
2105void 2560void
2106ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2107{ 2562{
2108 io_blocktime = interval; 2563 io_blocktime = interval;
2109} 2564}
2110 2565
2111void 2566void
2112ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2113{ 2568{
2114 timeout_blocktime = interval; 2569 timeout_blocktime = interval;
2115} 2570}
2116 2571
2117void 2572void
2118ev_set_userdata (EV_P_ void *data) 2573ev_set_userdata (EV_P_ void *data) EV_THROW
2119{ 2574{
2120 userdata = data; 2575 userdata = data;
2121} 2576}
2122 2577
2123void * 2578void *
2124ev_userdata (EV_P) 2579ev_userdata (EV_P) EV_THROW
2125{ 2580{
2126 return userdata; 2581 return userdata;
2127} 2582}
2128 2583
2129void 2584void
2130ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2585ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2131{ 2586{
2132 invoke_cb = invoke_pending_cb; 2587 invoke_cb = invoke_pending_cb;
2133} 2588}
2134 2589
2135void 2590void
2136ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2591ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
2137{ 2592{
2138 release_cb = release; 2593 release_cb = release;
2139 acquire_cb = acquire; 2594 acquire_cb = acquire;
2140} 2595}
2141#endif 2596#endif
2142 2597
2143/* initialise a loop structure, must be zero-initialised */ 2598/* initialise a loop structure, must be zero-initialised */
2144static void noinline ecb_cold 2599static void noinline ecb_cold
2145loop_init (EV_P_ unsigned int flags) 2600loop_init (EV_P_ unsigned int flags) EV_THROW
2146{ 2601{
2147 if (!backend) 2602 if (!backend)
2148 { 2603 {
2149 origflags = flags; 2604 origflags = flags;
2150 2605
… …
2195#if EV_ASYNC_ENABLE 2650#if EV_ASYNC_ENABLE
2196 async_pending = 0; 2651 async_pending = 0;
2197#endif 2652#endif
2198 pipe_write_skipped = 0; 2653 pipe_write_skipped = 0;
2199 pipe_write_wanted = 0; 2654 pipe_write_wanted = 0;
2655 evpipe [0] = -1;
2656 evpipe [1] = -1;
2200#if EV_USE_INOTIFY 2657#if EV_USE_INOTIFY
2201 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2658 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2202#endif 2659#endif
2203#if EV_USE_SIGNALFD 2660#if EV_USE_SIGNALFD
2204 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2661 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2255 EV_INVOKE_PENDING; 2712 EV_INVOKE_PENDING;
2256 } 2713 }
2257#endif 2714#endif
2258 2715
2259#if EV_CHILD_ENABLE 2716#if EV_CHILD_ENABLE
2260 if (ev_is_active (&childev)) 2717 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2261 { 2718 {
2262 ev_ref (EV_A); /* child watcher */ 2719 ev_ref (EV_A); /* child watcher */
2263 ev_signal_stop (EV_A_ &childev); 2720 ev_signal_stop (EV_A_ &childev);
2264 } 2721 }
2265#endif 2722#endif
… …
2267 if (ev_is_active (&pipe_w)) 2724 if (ev_is_active (&pipe_w))
2268 { 2725 {
2269 /*ev_ref (EV_A);*/ 2726 /*ev_ref (EV_A);*/
2270 /*ev_io_stop (EV_A_ &pipe_w);*/ 2727 /*ev_io_stop (EV_A_ &pipe_w);*/
2271 2728
2272#if EV_USE_EVENTFD
2273 if (evfd >= 0)
2274 close (evfd);
2275#endif
2276
2277 if (evpipe [0] >= 0)
2278 {
2279 EV_WIN32_CLOSE_FD (evpipe [0]); 2729 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2280 EV_WIN32_CLOSE_FD (evpipe [1]); 2730 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2281 }
2282 } 2731 }
2283 2732
2284#if EV_USE_SIGNALFD 2733#if EV_USE_SIGNALFD
2285 if (ev_is_active (&sigfd_w)) 2734 if (ev_is_active (&sigfd_w))
2286 close (sigfd); 2735 close (sigfd);
… …
2372#endif 2821#endif
2373#if EV_USE_INOTIFY 2822#if EV_USE_INOTIFY
2374 infy_fork (EV_A); 2823 infy_fork (EV_A);
2375#endif 2824#endif
2376 2825
2826#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2377 if (ev_is_active (&pipe_w)) 2827 if (ev_is_active (&pipe_w))
2378 { 2828 {
2379 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2829 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2380 2830
2381 ev_ref (EV_A); 2831 ev_ref (EV_A);
2382 ev_io_stop (EV_A_ &pipe_w); 2832 ev_io_stop (EV_A_ &pipe_w);
2383 2833
2384#if EV_USE_EVENTFD
2385 if (evfd >= 0)
2386 close (evfd);
2387#endif
2388
2389 if (evpipe [0] >= 0) 2834 if (evpipe [0] >= 0)
2390 {
2391 EV_WIN32_CLOSE_FD (evpipe [0]); 2835 EV_WIN32_CLOSE_FD (evpipe [0]);
2392 EV_WIN32_CLOSE_FD (evpipe [1]);
2393 }
2394 2836
2395#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2396 evpipe_init (EV_A); 2837 evpipe_init (EV_A);
2397 /* now iterate over everything, in case we missed something */ 2838 /* iterate over everything, in case we missed something before */
2398 pipecb (EV_A_ &pipe_w, EV_READ); 2839 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2399#endif
2400 } 2840 }
2841#endif
2401 2842
2402 postfork = 0; 2843 postfork = 0;
2403} 2844}
2404 2845
2405#if EV_MULTIPLICITY 2846#if EV_MULTIPLICITY
2406 2847
2407struct ev_loop * ecb_cold 2848struct ev_loop * ecb_cold
2408ev_loop_new (unsigned int flags) 2849ev_loop_new (unsigned int flags) EV_THROW
2409{ 2850{
2410 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2851 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2411 2852
2412 memset (EV_A, 0, sizeof (struct ev_loop)); 2853 memset (EV_A, 0, sizeof (struct ev_loop));
2413 loop_init (EV_A_ flags); 2854 loop_init (EV_A_ flags);
… …
2457} 2898}
2458#endif 2899#endif
2459 2900
2460#if EV_FEATURE_API 2901#if EV_FEATURE_API
2461void ecb_cold 2902void ecb_cold
2462ev_verify (EV_P) 2903ev_verify (EV_P) EV_THROW
2463{ 2904{
2464#if EV_VERIFY 2905#if EV_VERIFY
2465 int i; 2906 int i;
2466 WL w; 2907 WL w, w2;
2467 2908
2468 assert (activecnt >= -1); 2909 assert (activecnt >= -1);
2469 2910
2470 assert (fdchangemax >= fdchangecnt); 2911 assert (fdchangemax >= fdchangecnt);
2471 for (i = 0; i < fdchangecnt; ++i) 2912 for (i = 0; i < fdchangecnt; ++i)
2472 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2913 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2473 2914
2474 assert (anfdmax >= 0); 2915 assert (anfdmax >= 0);
2475 for (i = 0; i < anfdmax; ++i) 2916 for (i = 0; i < anfdmax; ++i)
2917 {
2918 int j = 0;
2919
2476 for (w = anfds [i].head; w; w = w->next) 2920 for (w = w2 = anfds [i].head; w; w = w->next)
2477 { 2921 {
2478 verify_watcher (EV_A_ (W)w); 2922 verify_watcher (EV_A_ (W)w);
2923
2924 if (j++ & 1)
2925 {
2926 assert (("libev: io watcher list contains a loop", w != w2));
2927 w2 = w2->next;
2928 }
2929
2479 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2930 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2480 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2931 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2481 } 2932 }
2933 }
2482 2934
2483 assert (timermax >= timercnt); 2935 assert (timermax >= timercnt);
2484 verify_heap (EV_A_ timers, timercnt); 2936 verify_heap (EV_A_ timers, timercnt);
2485 2937
2486#if EV_PERIODIC_ENABLE 2938#if EV_PERIODIC_ENABLE
… …
2536#if EV_MULTIPLICITY 2988#if EV_MULTIPLICITY
2537struct ev_loop * ecb_cold 2989struct ev_loop * ecb_cold
2538#else 2990#else
2539int 2991int
2540#endif 2992#endif
2541ev_default_loop (unsigned int flags) 2993ev_default_loop (unsigned int flags) EV_THROW
2542{ 2994{
2543 if (!ev_default_loop_ptr) 2995 if (!ev_default_loop_ptr)
2544 { 2996 {
2545#if EV_MULTIPLICITY 2997#if EV_MULTIPLICITY
2546 EV_P = ev_default_loop_ptr = &default_loop_struct; 2998 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2565 3017
2566 return ev_default_loop_ptr; 3018 return ev_default_loop_ptr;
2567} 3019}
2568 3020
2569void 3021void
2570ev_loop_fork (EV_P) 3022ev_loop_fork (EV_P) EV_THROW
2571{ 3023{
2572 postfork = 1; /* must be in line with ev_default_fork */ 3024 postfork = 1;
2573} 3025}
2574 3026
2575/*****************************************************************************/ 3027/*****************************************************************************/
2576 3028
2577void 3029void
… …
2579{ 3031{
2580 EV_CB_INVOKE ((W)w, revents); 3032 EV_CB_INVOKE ((W)w, revents);
2581} 3033}
2582 3034
2583unsigned int 3035unsigned int
2584ev_pending_count (EV_P) 3036ev_pending_count (EV_P) EV_THROW
2585{ 3037{
2586 int pri; 3038 int pri;
2587 unsigned int count = 0; 3039 unsigned int count = 0;
2588 3040
2589 for (pri = NUMPRI; pri--; ) 3041 for (pri = NUMPRI; pri--; )
… …
2593} 3045}
2594 3046
2595void noinline 3047void noinline
2596ev_invoke_pending (EV_P) 3048ev_invoke_pending (EV_P)
2597{ 3049{
2598 int pri; 3050 pendingpri = NUMPRI;
2599 3051
2600 for (pri = NUMPRI; pri--; ) 3052 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3053 {
3054 --pendingpri;
3055
2601 while (pendingcnt [pri]) 3056 while (pendingcnt [pendingpri])
2602 { 3057 {
2603 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3058 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2604 3059
2605 p->w->pending = 0; 3060 p->w->pending = 0;
2606 EV_CB_INVOKE (p->w, p->events); 3061 EV_CB_INVOKE (p->w, p->events);
2607 EV_FREQUENT_CHECK; 3062 EV_FREQUENT_CHECK;
2608 } 3063 }
3064 }
2609} 3065}
2610 3066
2611#if EV_IDLE_ENABLE 3067#if EV_IDLE_ENABLE
2612/* make idle watchers pending. this handles the "call-idle */ 3068/* make idle watchers pending. this handles the "call-idle */
2613/* only when higher priorities are idle" logic */ 3069/* only when higher priorities are idle" logic */
… …
2703{ 3159{
2704 EV_FREQUENT_CHECK; 3160 EV_FREQUENT_CHECK;
2705 3161
2706 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3162 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2707 { 3163 {
2708 int feed_count = 0;
2709
2710 do 3164 do
2711 { 3165 {
2712 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3166 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2713 3167
2714 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3168 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2848 3302
2849 mn_now = ev_rt_now; 3303 mn_now = ev_rt_now;
2850 } 3304 }
2851} 3305}
2852 3306
2853void 3307int
2854ev_run (EV_P_ int flags) 3308ev_run (EV_P_ int flags)
2855{ 3309{
2856#if EV_FEATURE_API 3310#if EV_FEATURE_API
2857 ++loop_depth; 3311 ++loop_depth;
2858#endif 3312#endif
… …
2971#endif 3425#endif
2972 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3426 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2973 backend_poll (EV_A_ waittime); 3427 backend_poll (EV_A_ waittime);
2974 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3428 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2975 3429
2976 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3430 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2977 3431
3432 ECB_MEMORY_FENCE_ACQUIRE;
2978 if (pipe_write_skipped) 3433 if (pipe_write_skipped)
2979 { 3434 {
2980 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3435 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2981 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3436 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2982 } 3437 }
… …
3015 loop_done = EVBREAK_CANCEL; 3470 loop_done = EVBREAK_CANCEL;
3016 3471
3017#if EV_FEATURE_API 3472#if EV_FEATURE_API
3018 --loop_depth; 3473 --loop_depth;
3019#endif 3474#endif
3475
3476 return activecnt;
3020} 3477}
3021 3478
3022void 3479void
3023ev_break (EV_P_ int how) 3480ev_break (EV_P_ int how) EV_THROW
3024{ 3481{
3025 loop_done = how; 3482 loop_done = how;
3026} 3483}
3027 3484
3028void 3485void
3029ev_ref (EV_P) 3486ev_ref (EV_P) EV_THROW
3030{ 3487{
3031 ++activecnt; 3488 ++activecnt;
3032} 3489}
3033 3490
3034void 3491void
3035ev_unref (EV_P) 3492ev_unref (EV_P) EV_THROW
3036{ 3493{
3037 --activecnt; 3494 --activecnt;
3038} 3495}
3039 3496
3040void 3497void
3041ev_now_update (EV_P) 3498ev_now_update (EV_P) EV_THROW
3042{ 3499{
3043 time_update (EV_A_ 1e100); 3500 time_update (EV_A_ 1e100);
3044} 3501}
3045 3502
3046void 3503void
3047ev_suspend (EV_P) 3504ev_suspend (EV_P) EV_THROW
3048{ 3505{
3049 ev_now_update (EV_A); 3506 ev_now_update (EV_A);
3050} 3507}
3051 3508
3052void 3509void
3053ev_resume (EV_P) 3510ev_resume (EV_P) EV_THROW
3054{ 3511{
3055 ev_tstamp mn_prev = mn_now; 3512 ev_tstamp mn_prev = mn_now;
3056 3513
3057 ev_now_update (EV_A); 3514 ev_now_update (EV_A);
3058 timers_reschedule (EV_A_ mn_now - mn_prev); 3515 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3097 w->pending = 0; 3554 w->pending = 0;
3098 } 3555 }
3099} 3556}
3100 3557
3101int 3558int
3102ev_clear_pending (EV_P_ void *w) 3559ev_clear_pending (EV_P_ void *w) EV_THROW
3103{ 3560{
3104 W w_ = (W)w; 3561 W w_ = (W)w;
3105 int pending = w_->pending; 3562 int pending = w_->pending;
3106 3563
3107 if (expect_true (pending)) 3564 if (expect_true (pending))
… …
3140} 3597}
3141 3598
3142/*****************************************************************************/ 3599/*****************************************************************************/
3143 3600
3144void noinline 3601void noinline
3145ev_io_start (EV_P_ ev_io *w) 3602ev_io_start (EV_P_ ev_io *w) EV_THROW
3146{ 3603{
3147 int fd = w->fd; 3604 int fd = w->fd;
3148 3605
3149 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
3150 return; 3607 return;
… …
3156 3613
3157 ev_start (EV_A_ (W)w, 1); 3614 ev_start (EV_A_ (W)w, 1);
3158 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3615 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3159 wlist_add (&anfds[fd].head, (WL)w); 3616 wlist_add (&anfds[fd].head, (WL)w);
3160 3617
3618 /* common bug, apparently */
3619 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3620
3161 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3621 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3162 w->events &= ~EV__IOFDSET; 3622 w->events &= ~EV__IOFDSET;
3163 3623
3164 EV_FREQUENT_CHECK; 3624 EV_FREQUENT_CHECK;
3165} 3625}
3166 3626
3167void noinline 3627void noinline
3168ev_io_stop (EV_P_ ev_io *w) 3628ev_io_stop (EV_P_ ev_io *w) EV_THROW
3169{ 3629{
3170 clear_pending (EV_A_ (W)w); 3630 clear_pending (EV_A_ (W)w);
3171 if (expect_false (!ev_is_active (w))) 3631 if (expect_false (!ev_is_active (w)))
3172 return; 3632 return;
3173 3633
… …
3182 3642
3183 EV_FREQUENT_CHECK; 3643 EV_FREQUENT_CHECK;
3184} 3644}
3185 3645
3186void noinline 3646void noinline
3187ev_timer_start (EV_P_ ev_timer *w) 3647ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3188{ 3648{
3189 if (expect_false (ev_is_active (w))) 3649 if (expect_false (ev_is_active (w)))
3190 return; 3650 return;
3191 3651
3192 ev_at (w) += mn_now; 3652 ev_at (w) += mn_now;
… …
3206 3666
3207 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3667 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3208} 3668}
3209 3669
3210void noinline 3670void noinline
3211ev_timer_stop (EV_P_ ev_timer *w) 3671ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3212{ 3672{
3213 clear_pending (EV_A_ (W)w); 3673 clear_pending (EV_A_ (W)w);
3214 if (expect_false (!ev_is_active (w))) 3674 if (expect_false (!ev_is_active (w)))
3215 return; 3675 return;
3216 3676
… …
3236 3696
3237 EV_FREQUENT_CHECK; 3697 EV_FREQUENT_CHECK;
3238} 3698}
3239 3699
3240void noinline 3700void noinline
3241ev_timer_again (EV_P_ ev_timer *w) 3701ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3242{ 3702{
3243 EV_FREQUENT_CHECK; 3703 EV_FREQUENT_CHECK;
3704
3705 clear_pending (EV_A_ (W)w);
3244 3706
3245 if (ev_is_active (w)) 3707 if (ev_is_active (w))
3246 { 3708 {
3247 if (w->repeat) 3709 if (w->repeat)
3248 { 3710 {
… …
3261 3723
3262 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
3263} 3725}
3264 3726
3265ev_tstamp 3727ev_tstamp
3266ev_timer_remaining (EV_P_ ev_timer *w) 3728ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3267{ 3729{
3268 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3730 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3269} 3731}
3270 3732
3271#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
3272void noinline 3734void noinline
3273ev_periodic_start (EV_P_ ev_periodic *w) 3735ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3274{ 3736{
3275 if (expect_false (ev_is_active (w))) 3737 if (expect_false (ev_is_active (w)))
3276 return; 3738 return;
3277 3739
3278 if (w->reschedule_cb) 3740 if (w->reschedule_cb)
… …
3298 3760
3299 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3761 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3300} 3762}
3301 3763
3302void noinline 3764void noinline
3303ev_periodic_stop (EV_P_ ev_periodic *w) 3765ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3304{ 3766{
3305 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
3306 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
3307 return; 3769 return;
3308 3770
… …
3326 3788
3327 EV_FREQUENT_CHECK; 3789 EV_FREQUENT_CHECK;
3328} 3790}
3329 3791
3330void noinline 3792void noinline
3331ev_periodic_again (EV_P_ ev_periodic *w) 3793ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3332{ 3794{
3333 /* TODO: use adjustheap and recalculation */ 3795 /* TODO: use adjustheap and recalculation */
3334 ev_periodic_stop (EV_A_ w); 3796 ev_periodic_stop (EV_A_ w);
3335 ev_periodic_start (EV_A_ w); 3797 ev_periodic_start (EV_A_ w);
3336} 3798}
… …
3341#endif 3803#endif
3342 3804
3343#if EV_SIGNAL_ENABLE 3805#if EV_SIGNAL_ENABLE
3344 3806
3345void noinline 3807void noinline
3346ev_signal_start (EV_P_ ev_signal *w) 3808ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3347{ 3809{
3348 if (expect_false (ev_is_active (w))) 3810 if (expect_false (ev_is_active (w)))
3349 return; 3811 return;
3350 3812
3351 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3813 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3353#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
3354 assert (("libev: a signal must not be attached to two different loops", 3816 assert (("libev: a signal must not be attached to two different loops",
3355 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3817 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3356 3818
3357 signals [w->signum - 1].loop = EV_A; 3819 signals [w->signum - 1].loop = EV_A;
3820 ECB_MEMORY_FENCE_RELEASE;
3358#endif 3821#endif
3359 3822
3360 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
3361 3824
3362#if EV_USE_SIGNALFD 3825#if EV_USE_SIGNALFD
… …
3422 3885
3423 EV_FREQUENT_CHECK; 3886 EV_FREQUENT_CHECK;
3424} 3887}
3425 3888
3426void noinline 3889void noinline
3427ev_signal_stop (EV_P_ ev_signal *w) 3890ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3428{ 3891{
3429 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
3430 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
3431 return; 3894 return;
3432 3895
… …
3463#endif 3926#endif
3464 3927
3465#if EV_CHILD_ENABLE 3928#if EV_CHILD_ENABLE
3466 3929
3467void 3930void
3468ev_child_start (EV_P_ ev_child *w) 3931ev_child_start (EV_P_ ev_child *w) EV_THROW
3469{ 3932{
3470#if EV_MULTIPLICITY 3933#if EV_MULTIPLICITY
3471 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3472#endif 3935#endif
3473 if (expect_false (ev_is_active (w))) 3936 if (expect_false (ev_is_active (w)))
… …
3480 3943
3481 EV_FREQUENT_CHECK; 3944 EV_FREQUENT_CHECK;
3482} 3945}
3483 3946
3484void 3947void
3485ev_child_stop (EV_P_ ev_child *w) 3948ev_child_stop (EV_P_ ev_child *w) EV_THROW
3486{ 3949{
3487 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
3488 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
3489 return; 3952 return;
3490 3953
… …
3517# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3518 3981
3519static void noinline 3982static void noinline
3520infy_add (EV_P_ ev_stat *w) 3983infy_add (EV_P_ ev_stat *w)
3521{ 3984{
3522 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); 3985 w->wd = inotify_add_watch (fs_fd, w->path,
3986 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3987 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3988 | IN_DONT_FOLLOW | IN_MASK_ADD);
3523 3989
3524 if (w->wd >= 0) 3990 if (w->wd >= 0)
3525 { 3991 {
3526 struct statfs sfs; 3992 struct statfs sfs;
3527 3993
… …
3531 3997
3532 if (!fs_2625) 3998 if (!fs_2625)
3533 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3999 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3534 else if (!statfs (w->path, &sfs) 4000 else if (!statfs (w->path, &sfs)
3535 && (sfs.f_type == 0x1373 /* devfs */ 4001 && (sfs.f_type == 0x1373 /* devfs */
4002 || sfs.f_type == 0x4006 /* fat */
4003 || sfs.f_type == 0x4d44 /* msdos */
3536 || sfs.f_type == 0xEF53 /* ext2/3 */ 4004 || sfs.f_type == 0xEF53 /* ext2/3 */
4005 || sfs.f_type == 0x72b6 /* jffs2 */
4006 || sfs.f_type == 0x858458f6 /* ramfs */
4007 || sfs.f_type == 0x5346544e /* ntfs */
3537 || sfs.f_type == 0x3153464a /* jfs */ 4008 || sfs.f_type == 0x3153464a /* jfs */
4009 || sfs.f_type == 0x9123683e /* btrfs */
3538 || sfs.f_type == 0x52654973 /* reiser3 */ 4010 || sfs.f_type == 0x52654973 /* reiser3 */
3539 || sfs.f_type == 0x01021994 /* tempfs */ 4011 || sfs.f_type == 0x01021994 /* tmpfs */
3540 || sfs.f_type == 0x58465342 /* xfs */)) 4012 || sfs.f_type == 0x58465342 /* xfs */))
3541 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4013 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3542 else 4014 else
3543 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4015 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3544 } 4016 }
… …
3657} 4129}
3658 4130
3659inline_size int 4131inline_size int
3660infy_newfd (void) 4132infy_newfd (void)
3661{ 4133{
3662#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4134#if defined IN_CLOEXEC && defined IN_NONBLOCK
3663 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4135 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3664 if (fd >= 0) 4136 if (fd >= 0)
3665 return fd; 4137 return fd;
3666#endif 4138#endif
3667 return inotify_init (); 4139 return inotify_init ();
… …
3742#else 4214#else
3743# define EV_LSTAT(p,b) lstat (p, b) 4215# define EV_LSTAT(p,b) lstat (p, b)
3744#endif 4216#endif
3745 4217
3746void 4218void
3747ev_stat_stat (EV_P_ ev_stat *w) 4219ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3748{ 4220{
3749 if (lstat (w->path, &w->attr) < 0) 4221 if (lstat (w->path, &w->attr) < 0)
3750 w->attr.st_nlink = 0; 4222 w->attr.st_nlink = 0;
3751 else if (!w->attr.st_nlink) 4223 else if (!w->attr.st_nlink)
3752 w->attr.st_nlink = 1; 4224 w->attr.st_nlink = 1;
… …
3791 ev_feed_event (EV_A_ w, EV_STAT); 4263 ev_feed_event (EV_A_ w, EV_STAT);
3792 } 4264 }
3793} 4265}
3794 4266
3795void 4267void
3796ev_stat_start (EV_P_ ev_stat *w) 4268ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3797{ 4269{
3798 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3799 return; 4271 return;
3800 4272
3801 ev_stat_stat (EV_A_ w); 4273 ev_stat_stat (EV_A_ w);
… …
3822 4294
3823 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3824} 4296}
3825 4297
3826void 4298void
3827ev_stat_stop (EV_P_ ev_stat *w) 4299ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3828{ 4300{
3829 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3830 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3831 return; 4303 return;
3832 4304
… …
3848} 4320}
3849#endif 4321#endif
3850 4322
3851#if EV_IDLE_ENABLE 4323#if EV_IDLE_ENABLE
3852void 4324void
3853ev_idle_start (EV_P_ ev_idle *w) 4325ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3854{ 4326{
3855 if (expect_false (ev_is_active (w))) 4327 if (expect_false (ev_is_active (w)))
3856 return; 4328 return;
3857 4329
3858 pri_adjust (EV_A_ (W)w); 4330 pri_adjust (EV_A_ (W)w);
… …
3871 4343
3872 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3873} 4345}
3874 4346
3875void 4347void
3876ev_idle_stop (EV_P_ ev_idle *w) 4348ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3877{ 4349{
3878 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3879 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3880 return; 4352 return;
3881 4353
… …
3895} 4367}
3896#endif 4368#endif
3897 4369
3898#if EV_PREPARE_ENABLE 4370#if EV_PREPARE_ENABLE
3899void 4371void
3900ev_prepare_start (EV_P_ ev_prepare *w) 4372ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3901{ 4373{
3902 if (expect_false (ev_is_active (w))) 4374 if (expect_false (ev_is_active (w)))
3903 return; 4375 return;
3904 4376
3905 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
… …
3910 4382
3911 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
3912} 4384}
3913 4385
3914void 4386void
3915ev_prepare_stop (EV_P_ ev_prepare *w) 4387ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3916{ 4388{
3917 clear_pending (EV_A_ (W)w); 4389 clear_pending (EV_A_ (W)w);
3918 if (expect_false (!ev_is_active (w))) 4390 if (expect_false (!ev_is_active (w)))
3919 return; 4391 return;
3920 4392
… …
3933} 4405}
3934#endif 4406#endif
3935 4407
3936#if EV_CHECK_ENABLE 4408#if EV_CHECK_ENABLE
3937void 4409void
3938ev_check_start (EV_P_ ev_check *w) 4410ev_check_start (EV_P_ ev_check *w) EV_THROW
3939{ 4411{
3940 if (expect_false (ev_is_active (w))) 4412 if (expect_false (ev_is_active (w)))
3941 return; 4413 return;
3942 4414
3943 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
… …
3948 4420
3949 EV_FREQUENT_CHECK; 4421 EV_FREQUENT_CHECK;
3950} 4422}
3951 4423
3952void 4424void
3953ev_check_stop (EV_P_ ev_check *w) 4425ev_check_stop (EV_P_ ev_check *w) EV_THROW
3954{ 4426{
3955 clear_pending (EV_A_ (W)w); 4427 clear_pending (EV_A_ (W)w);
3956 if (expect_false (!ev_is_active (w))) 4428 if (expect_false (!ev_is_active (w)))
3957 return; 4429 return;
3958 4430
… …
3971} 4443}
3972#endif 4444#endif
3973 4445
3974#if EV_EMBED_ENABLE 4446#if EV_EMBED_ENABLE
3975void noinline 4447void noinline
3976ev_embed_sweep (EV_P_ ev_embed *w) 4448ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3977{ 4449{
3978 ev_run (w->other, EVRUN_NOWAIT); 4450 ev_run (w->other, EVRUN_NOWAIT);
3979} 4451}
3980 4452
3981static void 4453static void
… …
4029 ev_idle_stop (EV_A_ idle); 4501 ev_idle_stop (EV_A_ idle);
4030} 4502}
4031#endif 4503#endif
4032 4504
4033void 4505void
4034ev_embed_start (EV_P_ ev_embed *w) 4506ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4035{ 4507{
4036 if (expect_false (ev_is_active (w))) 4508 if (expect_false (ev_is_active (w)))
4037 return; 4509 return;
4038 4510
4039 { 4511 {
… …
4060 4532
4061 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
4062} 4534}
4063 4535
4064void 4536void
4065ev_embed_stop (EV_P_ ev_embed *w) 4537ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4066{ 4538{
4067 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
4068 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
4069 return; 4541 return;
4070 4542
… …
4080} 4552}
4081#endif 4553#endif
4082 4554
4083#if EV_FORK_ENABLE 4555#if EV_FORK_ENABLE
4084void 4556void
4085ev_fork_start (EV_P_ ev_fork *w) 4557ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4086{ 4558{
4087 if (expect_false (ev_is_active (w))) 4559 if (expect_false (ev_is_active (w)))
4088 return; 4560 return;
4089 4561
4090 EV_FREQUENT_CHECK; 4562 EV_FREQUENT_CHECK;
… …
4095 4567
4096 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
4097} 4569}
4098 4570
4099void 4571void
4100ev_fork_stop (EV_P_ ev_fork *w) 4572ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4101{ 4573{
4102 clear_pending (EV_A_ (W)w); 4574 clear_pending (EV_A_ (W)w);
4103 if (expect_false (!ev_is_active (w))) 4575 if (expect_false (!ev_is_active (w)))
4104 return; 4576 return;
4105 4577
… …
4118} 4590}
4119#endif 4591#endif
4120 4592
4121#if EV_CLEANUP_ENABLE 4593#if EV_CLEANUP_ENABLE
4122void 4594void
4123ev_cleanup_start (EV_P_ ev_cleanup *w) 4595ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4124{ 4596{
4125 if (expect_false (ev_is_active (w))) 4597 if (expect_false (ev_is_active (w)))
4126 return; 4598 return;
4127 4599
4128 EV_FREQUENT_CHECK; 4600 EV_FREQUENT_CHECK;
… …
4135 ev_unref (EV_A); 4607 ev_unref (EV_A);
4136 EV_FREQUENT_CHECK; 4608 EV_FREQUENT_CHECK;
4137} 4609}
4138 4610
4139void 4611void
4140ev_cleanup_stop (EV_P_ ev_cleanup *w) 4612ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4141{ 4613{
4142 clear_pending (EV_A_ (W)w); 4614 clear_pending (EV_A_ (W)w);
4143 if (expect_false (!ev_is_active (w))) 4615 if (expect_false (!ev_is_active (w)))
4144 return; 4616 return;
4145 4617
… …
4159} 4631}
4160#endif 4632#endif
4161 4633
4162#if EV_ASYNC_ENABLE 4634#if EV_ASYNC_ENABLE
4163void 4635void
4164ev_async_start (EV_P_ ev_async *w) 4636ev_async_start (EV_P_ ev_async *w) EV_THROW
4165{ 4637{
4166 if (expect_false (ev_is_active (w))) 4638 if (expect_false (ev_is_active (w)))
4167 return; 4639 return;
4168 4640
4169 w->sent = 0; 4641 w->sent = 0;
… …
4178 4650
4179 EV_FREQUENT_CHECK; 4651 EV_FREQUENT_CHECK;
4180} 4652}
4181 4653
4182void 4654void
4183ev_async_stop (EV_P_ ev_async *w) 4655ev_async_stop (EV_P_ ev_async *w) EV_THROW
4184{ 4656{
4185 clear_pending (EV_A_ (W)w); 4657 clear_pending (EV_A_ (W)w);
4186 if (expect_false (!ev_is_active (w))) 4658 if (expect_false (!ev_is_active (w)))
4187 return; 4659 return;
4188 4660
… …
4199 4671
4200 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
4201} 4673}
4202 4674
4203void 4675void
4204ev_async_send (EV_P_ ev_async *w) 4676ev_async_send (EV_P_ ev_async *w) EV_THROW
4205{ 4677{
4206 w->sent = 1; 4678 w->sent = 1;
4207 evpipe_write (EV_A_ &async_pending); 4679 evpipe_write (EV_A_ &async_pending);
4208} 4680}
4209#endif 4681#endif
… …
4246 4718
4247 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4719 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4248} 4720}
4249 4721
4250void 4722void
4251ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4723ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4252{ 4724{
4253 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4725 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4254 4726
4255 if (expect_false (!once)) 4727 if (expect_false (!once))
4256 { 4728 {
… …
4278 4750
4279/*****************************************************************************/ 4751/*****************************************************************************/
4280 4752
4281#if EV_WALK_ENABLE 4753#if EV_WALK_ENABLE
4282void ecb_cold 4754void ecb_cold
4283ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4755ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4284{ 4756{
4285 int i, j; 4757 int i, j;
4286 ev_watcher_list *wl, *wn; 4758 ev_watcher_list *wl, *wn;
4287 4759
4288 if (types & (EV_IO | EV_EMBED)) 4760 if (types & (EV_IO | EV_EMBED))
… …
4394 4866
4395#if EV_MULTIPLICITY 4867#if EV_MULTIPLICITY
4396 #include "ev_wrap.h" 4868 #include "ev_wrap.h"
4397#endif 4869#endif
4398 4870
4399EV_CPP(})
4400

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