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Comparing libev/ev.c (file contents):
Revision 1.395 by root, Wed Aug 24 16:08:17 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#endif 610#endif
544 611
545#ifndef ECB_MEMORY_FENCE 612#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) 613 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
547 #if __i386__ 614 #if __i386 || __i386__
548 #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")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 616 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 617 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
551 #elif __amd64 618 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 619 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 620 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 621 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 622 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 624 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 625 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 627 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 628 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 629 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
630 #elif __aarch64__
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
632 #elif (__sparc || __sparc__) && !__sparcv8
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")
563 #endif 655 #endif
564 #endif 656 #endif
565#endif 657#endif
566 658
567#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
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 677 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 678 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 679 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#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()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 685 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 686 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 687 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #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 */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 689 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 690 #elif defined _WIN32
578 #include <WinNT.h> 691 #include <WinNT.h>
579 #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)
580 #endif 717 #endif
581#endif 718#endif
582 719
583#ifndef ECB_MEMORY_FENCE 720#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 721 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 733 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #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)
598 #endif 735 #endif
599#endif 736#endif
600 737
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 738#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 739 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 740#endif
604 741
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 742#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 743 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 744#endif
608 745
609/*****************************************************************************/ 746/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612 747
613#if __cplusplus 748#if __cplusplus
614 #define ecb_inline static inline 749 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 750#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 751 #define ecb_inline static __inline__
… …
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 777 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 778 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 779 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 780#else
646 #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
647 #define ecb_is_constant(expr) 0 787 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr) 788 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 789 #define ecb_prefetch(addr,rw,locality)
650#endif 790#endif
651 791
… …
655#elif ECB_GCC_VERSION(3,0) 795#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x) 796 #define ecb_decltype(x) __typeof(x)
657#endif 797#endif
658 798
659#define ecb_noinline ecb_attribute ((__noinline__)) 799#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__)) 800#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 801#define ecb_const ecb_attribute ((__const__))
663#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
664 809
665#if ECB_GCC_VERSION(4,3) 810#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 811 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 812 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 813 #define ecb_cold ecb_attribute ((__cold__))
… …
759 904
760 return r + ecb_ld32 (x); 905 return r + ecb_ld32 (x);
761 } 906 }
762#endif 907#endif
763 908
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
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 944/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 945/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 946ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int 947ecb_function_ int
768ecb_popcount64 (uint64_t x) 948ecb_popcount64 (uint64_t x)
… …
817 997
818#if ECB_GCC_VERSION(4,5) 998#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable () 999 #define ecb_unreachable() __builtin_unreachable ()
820#else 1000#else
821 /* 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 :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1002 ecb_inline void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { } 1003 ecb_inline void ecb_unreachable (void) { }
824#endif 1004#endif
825 1005
826/* try to tell the compiler that some condition is definitely true */ 1006/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1007#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1008
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1009ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char 1010ecb_inline unsigned char
831ecb_byteorder_helper (void) 1011ecb_byteorder_helper (void)
832{ 1012{
833 const uint32_t u = 0x11223344; 1013 /* the union code still generates code under pressure in gcc, */
834 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
835} 1033}
836 1034
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1035ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
838ecb_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; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1037ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
840ecb_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; }
841 1039
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1040#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #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))
844#else 1042#else
845 #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))
846#endif 1060#endif
847 1061
848#if ecb_cplusplus_does_not_suck 1062#if ecb_cplusplus_does_not_suck
849 /* 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) */
850 template<typename T, int N> 1064 template<typename T, int N>
… …
854 } 1068 }
855#else 1069#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1070 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1071#endif
858 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
859#endif 1275#endif
860 1276
861/* ECB.H END */ 1277/* ECB.H END */
862 1278
863#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
864# undef ECB_MEMORY_FENCE 1290#ifndef ECB_MEMORY_FENCE
865# undef ECB_MEMORY_FENCE_ACQUIRE 1291# define ECB_MEMORY_FENCE do { } while (0)
866# undef ECB_MEMORY_FENCE_RELEASE 1292# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1293# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
867#endif 1294#endif
868 1295
869#define expect_false(cond) ecb_expect_false (cond) 1296#define expect_false(cond) ecb_expect_false (cond)
870#define expect_true(cond) ecb_expect_true (cond) 1297#define expect_true(cond) ecb_expect_true (cond)
871#define noinline ecb_noinline 1298#define noinline ecb_noinline
… …
1018{ 1445{
1019 write (STDERR_FILENO, msg, strlen (msg)); 1446 write (STDERR_FILENO, msg, strlen (msg));
1020} 1447}
1021#endif 1448#endif
1022 1449
1023static void (*syserr_cb)(const char *msg); 1450static void (*syserr_cb)(const char *msg) EV_THROW;
1024 1451
1025void ecb_cold 1452void ecb_cold
1026ev_set_syserr_cb (void (*cb)(const char *msg)) 1453ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1027{ 1454{
1028 syserr_cb = cb; 1455 syserr_cb = cb;
1029} 1456}
1030 1457
1031static void noinline ecb_cold 1458static void noinline ecb_cold
… …
1049 abort (); 1476 abort ();
1050 } 1477 }
1051} 1478}
1052 1479
1053static void * 1480static void *
1054ev_realloc_emul (void *ptr, long size) 1481ev_realloc_emul (void *ptr, long size) EV_THROW
1055{ 1482{
1056#if __GLIBC__
1057 return realloc (ptr, size);
1058#else
1059 /* some systems, notably openbsd and darwin, fail to properly 1483 /* some systems, notably openbsd and darwin, fail to properly
1060 * 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
1061 * 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.
1062 */ 1488 */
1063 1489
1064 if (size) 1490 if (size)
1065 return realloc (ptr, size); 1491 return realloc (ptr, size);
1066 1492
1067 free (ptr); 1493 free (ptr);
1068 return 0; 1494 return 0;
1069#endif
1070} 1495}
1071 1496
1072static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1497static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1073 1498
1074void ecb_cold 1499void ecb_cold
1075ev_set_allocator (void *(*cb)(void *ptr, long size)) 1500ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1076{ 1501{
1077 alloc = cb; 1502 alloc = cb;
1078} 1503}
1079 1504
1080inline_speed void * 1505inline_speed void *
… …
1168 #undef VAR 1593 #undef VAR
1169 }; 1594 };
1170 #include "ev_wrap.h" 1595 #include "ev_wrap.h"
1171 1596
1172 static struct ev_loop default_loop_struct; 1597 static struct ev_loop default_loop_struct;
1173 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 */
1174 1599
1175#else 1600#else
1176 1601
1177 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 */
1178 #define VAR(name,decl) static decl; 1603 #define VAR(name,decl) static decl;
1179 #include "ev_vars.h" 1604 #include "ev_vars.h"
1180 #undef VAR 1605 #undef VAR
1181 1606
1182 static int ev_default_loop_ptr; 1607 static int ev_default_loop_ptr;
… …
1197 1622
1198/*****************************************************************************/ 1623/*****************************************************************************/
1199 1624
1200#ifndef EV_HAVE_EV_TIME 1625#ifndef EV_HAVE_EV_TIME
1201ev_tstamp 1626ev_tstamp
1202ev_time (void) 1627ev_time (void) EV_THROW
1203{ 1628{
1204#if EV_USE_REALTIME 1629#if EV_USE_REALTIME
1205 if (expect_true (have_realtime)) 1630 if (expect_true (have_realtime))
1206 { 1631 {
1207 struct timespec ts; 1632 struct timespec ts;
… …
1231 return ev_time (); 1656 return ev_time ();
1232} 1657}
1233 1658
1234#if EV_MULTIPLICITY 1659#if EV_MULTIPLICITY
1235ev_tstamp 1660ev_tstamp
1236ev_now (EV_P) 1661ev_now (EV_P) EV_THROW
1237{ 1662{
1238 return ev_rt_now; 1663 return ev_rt_now;
1239} 1664}
1240#endif 1665#endif
1241 1666
1242void 1667void
1243ev_sleep (ev_tstamp delay) 1668ev_sleep (ev_tstamp delay) EV_THROW
1244{ 1669{
1245 if (delay > 0.) 1670 if (delay > 0.)
1246 { 1671 {
1247#if EV_USE_NANOSLEEP 1672#if EV_USE_NANOSLEEP
1248 struct timespec ts; 1673 struct timespec ts;
1249 1674
1250 EV_TS_SET (ts, delay); 1675 EV_TS_SET (ts, delay);
1251 nanosleep (&ts, 0); 1676 nanosleep (&ts, 0);
1252#elif defined(_WIN32) 1677#elif defined _WIN32
1253 Sleep ((unsigned long)(delay * 1e3)); 1678 Sleep ((unsigned long)(delay * 1e3));
1254#else 1679#else
1255 struct timeval tv; 1680 struct timeval tv;
1256 1681
1257 /* 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 */
… …
1276 1701
1277 do 1702 do
1278 ncur <<= 1; 1703 ncur <<= 1;
1279 while (cnt > ncur); 1704 while (cnt > ncur);
1280 1705
1281 /* 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 */
1282 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1707 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1283 { 1708 {
1284 ncur *= elem; 1709 ncur *= elem;
1285 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);
1286 ncur = ncur - sizeof (void *) * 4; 1711 ncur = ncur - sizeof (void *) * 4;
… …
1329pendingcb (EV_P_ ev_prepare *w, int revents) 1754pendingcb (EV_P_ ev_prepare *w, int revents)
1330{ 1755{
1331} 1756}
1332 1757
1333void noinline 1758void noinline
1334ev_feed_event (EV_P_ void *w, int revents) 1759ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1335{ 1760{
1336 W w_ = (W)w; 1761 W w_ = (W)w;
1337 int pri = ABSPRI (w_); 1762 int pri = ABSPRI (w_);
1338 1763
1339 if (expect_false (w_->pending)) 1764 if (expect_false (w_->pending))
… …
1343 w_->pending = ++pendingcnt [pri]; 1768 w_->pending = ++pendingcnt [pri];
1344 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1769 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1345 pendings [pri][w_->pending - 1].w = w_; 1770 pendings [pri][w_->pending - 1].w = w_;
1346 pendings [pri][w_->pending - 1].events = revents; 1771 pendings [pri][w_->pending - 1].events = revents;
1347 } 1772 }
1773
1774 pendingpri = NUMPRI - 1;
1348} 1775}
1349 1776
1350inline_speed void 1777inline_speed void
1351feed_reverse (EV_P_ W w) 1778feed_reverse (EV_P_ W w)
1352{ 1779{
… …
1398 if (expect_true (!anfd->reify)) 1825 if (expect_true (!anfd->reify))
1399 fd_event_nocheck (EV_A_ fd, revents); 1826 fd_event_nocheck (EV_A_ fd, revents);
1400} 1827}
1401 1828
1402void 1829void
1403ev_feed_fd_event (EV_P_ int fd, int revents) 1830ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1404{ 1831{
1405 if (fd >= 0 && fd < anfdmax) 1832 if (fd >= 0 && fd < anfdmax)
1406 fd_event_nocheck (EV_A_ fd, revents); 1833 fd_event_nocheck (EV_A_ fd, revents);
1407} 1834}
1408 1835
… …
1727static void noinline ecb_cold 2154static void noinline ecb_cold
1728evpipe_init (EV_P) 2155evpipe_init (EV_P)
1729{ 2156{
1730 if (!ev_is_active (&pipe_w)) 2157 if (!ev_is_active (&pipe_w))
1731 { 2158 {
2159 int fds [2];
2160
1732# if EV_USE_EVENTFD 2161# if EV_USE_EVENTFD
2162 fds [0] = -1;
1733 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2163 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1734 if (evfd < 0 && errno == EINVAL) 2164 if (fds [1] < 0 && errno == EINVAL)
1735 evfd = eventfd (0, 0); 2165 fds [1] = eventfd (0, 0);
1736 2166
1737 if (evfd >= 0) 2167 if (fds [1] < 0)
2168# endif
1738 { 2169 {
2170 while (pipe (fds))
2171 ev_syserr ("(libev) error creating signal/async pipe");
2172
2173 fd_intern (fds [0]);
2174 }
2175
1739 evpipe [0] = -1; 2176 evpipe [0] = fds [0];
1740 fd_intern (evfd); /* doing it twice doesn't hurt */ 2177
1741 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));
1742 } 2228 }
1743 else 2229 else
1744# endif 2230#endif
1745 { 2231 {
1746 while (pipe (evpipe)) 2232#ifdef _WIN32
1747 ev_syserr ("(libev) error creating signal/async pipe"); 2233 WSABUF buf;
1748 2234 DWORD sent;
1749 fd_intern (evpipe [0]); 2235 buf.buf = &buf;
1750 fd_intern (evpipe [1]); 2236 buf.len = 1;
1751 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2237 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1752 } 2238#else
1753
1754 ev_io_start (EV_A_ &pipe_w);
1755 ev_unref (EV_A); /* watcher should not keep loop alive */
1756 }
1757}
1758
1759inline_speed void
1760evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1761{
1762 if (expect_true (*flag))
1763 return;
1764
1765 *flag = 1;
1766
1767 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1768
1769 pipe_write_skipped = 1;
1770
1771 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1772
1773 if (pipe_write_wanted)
1774 {
1775 int old_errno;
1776
1777 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1778
1779 old_errno = errno; /* save errno because write will clobber it */
1780
1781#if EV_USE_EVENTFD
1782 if (evfd >= 0)
1783 {
1784 uint64_t counter = 1;
1785 write (evfd, &counter, sizeof (uint64_t));
1786 }
1787 else
1788#endif
1789 {
1790 /* win32 people keep sending patches that change this write() to send() */
1791 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1792 /* so when you think this write should be a send instead, please find out */
1793 /* where your send() is from - it's definitely not the microsoft send, and */
1794 /* tell me. thank you. */
1795 write (evpipe [1], &(evpipe [1]), 1); 2239 write (evpipe [1], &(evpipe [1]), 1);
2240#endif
1796 } 2241 }
1797 2242
1798 errno = old_errno; 2243 errno = old_errno;
1799 } 2244 }
1800} 2245}
… …
1807 int i; 2252 int i;
1808 2253
1809 if (revents & EV_READ) 2254 if (revents & EV_READ)
1810 { 2255 {
1811#if EV_USE_EVENTFD 2256#if EV_USE_EVENTFD
1812 if (evfd >= 0) 2257 if (evpipe [0] < 0)
1813 { 2258 {
1814 uint64_t counter; 2259 uint64_t counter;
1815 read (evfd, &counter, sizeof (uint64_t)); 2260 read (evpipe [1], &counter, sizeof (uint64_t));
1816 } 2261 }
1817 else 2262 else
1818#endif 2263#endif
1819 { 2264 {
1820 char dummy; 2265 char dummy[4];
1821 /* 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
1822 read (evpipe [0], &dummy, 1); 2274 read (evpipe [0], &dummy, sizeof (dummy));
2275#endif
1823 } 2276 }
1824 } 2277 }
1825 2278
1826 pipe_write_skipped = 0; 2279 pipe_write_skipped = 0;
2280
2281 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1827 2282
1828#if EV_SIGNAL_ENABLE 2283#if EV_SIGNAL_ENABLE
1829 if (sig_pending) 2284 if (sig_pending)
1830 { 2285 {
1831 sig_pending = 0; 2286 sig_pending = 0;
2287
2288 ECB_MEMORY_FENCE;
1832 2289
1833 for (i = EV_NSIG - 1; i--; ) 2290 for (i = EV_NSIG - 1; i--; )
1834 if (expect_false (signals [i].pending)) 2291 if (expect_false (signals [i].pending))
1835 ev_feed_signal_event (EV_A_ i + 1); 2292 ev_feed_signal_event (EV_A_ i + 1);
1836 } 2293 }
… …
1838 2295
1839#if EV_ASYNC_ENABLE 2296#if EV_ASYNC_ENABLE
1840 if (async_pending) 2297 if (async_pending)
1841 { 2298 {
1842 async_pending = 0; 2299 async_pending = 0;
2300
2301 ECB_MEMORY_FENCE;
1843 2302
1844 for (i = asynccnt; i--; ) 2303 for (i = asynccnt; i--; )
1845 if (asyncs [i]->sent) 2304 if (asyncs [i]->sent)
1846 { 2305 {
1847 asyncs [i]->sent = 0; 2306 asyncs [i]->sent = 0;
2307 ECB_MEMORY_FENCE_RELEASE;
1848 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2308 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1849 } 2309 }
1850 } 2310 }
1851#endif 2311#endif
1852} 2312}
1853 2313
1854/*****************************************************************************/ 2314/*****************************************************************************/
1855 2315
1856void 2316void
1857ev_feed_signal (int signum) 2317ev_feed_signal (int signum) EV_THROW
1858{ 2318{
1859#if EV_MULTIPLICITY 2319#if EV_MULTIPLICITY
2320 EV_P;
2321 ECB_MEMORY_FENCE_ACQUIRE;
1860 EV_P = signals [signum - 1].loop; 2322 EV_A = signals [signum - 1].loop;
1861 2323
1862 if (!EV_A) 2324 if (!EV_A)
1863 return; 2325 return;
1864#endif 2326#endif
1865 2327
1866 if (!ev_active (&pipe_w))
1867 return;
1868
1869 signals [signum - 1].pending = 1; 2328 signals [signum - 1].pending = 1;
1870 evpipe_write (EV_A_ &sig_pending); 2329 evpipe_write (EV_A_ &sig_pending);
1871} 2330}
1872 2331
1873static void 2332static void
… …
1879 2338
1880 ev_feed_signal (signum); 2339 ev_feed_signal (signum);
1881} 2340}
1882 2341
1883void noinline 2342void noinline
1884ev_feed_signal_event (EV_P_ int signum) 2343ev_feed_signal_event (EV_P_ int signum) EV_THROW
1885{ 2344{
1886 WL w; 2345 WL w;
1887 2346
1888 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2347 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1889 return; 2348 return;
1890 2349
1891 --signum; 2350 --signum;
1892 2351
1893#if EV_MULTIPLICITY 2352#if EV_MULTIPLICITY
… …
1897 if (expect_false (signals [signum].loop != EV_A)) 2356 if (expect_false (signals [signum].loop != EV_A))
1898 return; 2357 return;
1899#endif 2358#endif
1900 2359
1901 signals [signum].pending = 0; 2360 signals [signum].pending = 0;
2361 ECB_MEMORY_FENCE_RELEASE;
1902 2362
1903 for (w = signals [signum].head; w; w = w->next) 2363 for (w = signals [signum].head; w; w = w->next)
1904 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2364 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1905} 2365}
1906 2366
… …
2005#if EV_USE_SELECT 2465#if EV_USE_SELECT
2006# include "ev_select.c" 2466# include "ev_select.c"
2007#endif 2467#endif
2008 2468
2009int ecb_cold 2469int ecb_cold
2010ev_version_major (void) 2470ev_version_major (void) EV_THROW
2011{ 2471{
2012 return EV_VERSION_MAJOR; 2472 return EV_VERSION_MAJOR;
2013} 2473}
2014 2474
2015int ecb_cold 2475int ecb_cold
2016ev_version_minor (void) 2476ev_version_minor (void) EV_THROW
2017{ 2477{
2018 return EV_VERSION_MINOR; 2478 return EV_VERSION_MINOR;
2019} 2479}
2020 2480
2021/* 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 */
… …
2029 || getgid () != getegid (); 2489 || getgid () != getegid ();
2030#endif 2490#endif
2031} 2491}
2032 2492
2033unsigned int ecb_cold 2493unsigned int ecb_cold
2034ev_supported_backends (void) 2494ev_supported_backends (void) EV_THROW
2035{ 2495{
2036 unsigned int flags = 0; 2496 unsigned int flags = 0;
2037 2497
2038 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2039 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2043 2503
2044 return flags; 2504 return flags;
2045} 2505}
2046 2506
2047unsigned int ecb_cold 2507unsigned int ecb_cold
2048ev_recommended_backends (void) 2508ev_recommended_backends (void) EV_THROW
2049{ 2509{
2050 unsigned int flags = ev_supported_backends (); 2510 unsigned int flags = ev_supported_backends ();
2051 2511
2052#ifndef __NetBSD__ 2512#ifndef __NetBSD__
2053 /* kqueue is borked on everything but netbsd apparently */ 2513 /* kqueue is borked on everything but netbsd apparently */
… …
2065 2525
2066 return flags; 2526 return flags;
2067} 2527}
2068 2528
2069unsigned int ecb_cold 2529unsigned int ecb_cold
2070ev_embeddable_backends (void) 2530ev_embeddable_backends (void) EV_THROW
2071{ 2531{
2072 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2073 2533
2074 /* 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 */
2075 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 */
… …
2077 2537
2078 return flags; 2538 return flags;
2079} 2539}
2080 2540
2081unsigned int 2541unsigned int
2082ev_backend (EV_P) 2542ev_backend (EV_P) EV_THROW
2083{ 2543{
2084 return backend; 2544 return backend;
2085} 2545}
2086 2546
2087#if EV_FEATURE_API 2547#if EV_FEATURE_API
2088unsigned int 2548unsigned int
2089ev_iteration (EV_P) 2549ev_iteration (EV_P) EV_THROW
2090{ 2550{
2091 return loop_count; 2551 return loop_count;
2092} 2552}
2093 2553
2094unsigned int 2554unsigned int
2095ev_depth (EV_P) 2555ev_depth (EV_P) EV_THROW
2096{ 2556{
2097 return loop_depth; 2557 return loop_depth;
2098} 2558}
2099 2559
2100void 2560void
2101ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2102{ 2562{
2103 io_blocktime = interval; 2563 io_blocktime = interval;
2104} 2564}
2105 2565
2106void 2566void
2107ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2108{ 2568{
2109 timeout_blocktime = interval; 2569 timeout_blocktime = interval;
2110} 2570}
2111 2571
2112void 2572void
2113ev_set_userdata (EV_P_ void *data) 2573ev_set_userdata (EV_P_ void *data) EV_THROW
2114{ 2574{
2115 userdata = data; 2575 userdata = data;
2116} 2576}
2117 2577
2118void * 2578void *
2119ev_userdata (EV_P) 2579ev_userdata (EV_P) EV_THROW
2120{ 2580{
2121 return userdata; 2581 return userdata;
2122} 2582}
2123 2583
2124void 2584void
2125ev_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
2126{ 2586{
2127 invoke_cb = invoke_pending_cb; 2587 invoke_cb = invoke_pending_cb;
2128} 2588}
2129 2589
2130void 2590void
2131ev_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
2132{ 2592{
2133 release_cb = release; 2593 release_cb = release;
2134 acquire_cb = acquire; 2594 acquire_cb = acquire;
2135} 2595}
2136#endif 2596#endif
2137 2597
2138/* initialise a loop structure, must be zero-initialised */ 2598/* initialise a loop structure, must be zero-initialised */
2139static void noinline ecb_cold 2599static void noinline ecb_cold
2140loop_init (EV_P_ unsigned int flags) 2600loop_init (EV_P_ unsigned int flags) EV_THROW
2141{ 2601{
2142 if (!backend) 2602 if (!backend)
2143 { 2603 {
2144 origflags = flags; 2604 origflags = flags;
2145 2605
… …
2190#if EV_ASYNC_ENABLE 2650#if EV_ASYNC_ENABLE
2191 async_pending = 0; 2651 async_pending = 0;
2192#endif 2652#endif
2193 pipe_write_skipped = 0; 2653 pipe_write_skipped = 0;
2194 pipe_write_wanted = 0; 2654 pipe_write_wanted = 0;
2655 evpipe [0] = -1;
2656 evpipe [1] = -1;
2195#if EV_USE_INOTIFY 2657#if EV_USE_INOTIFY
2196 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2658 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2197#endif 2659#endif
2198#if EV_USE_SIGNALFD 2660#if EV_USE_SIGNALFD
2199 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2661 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2250 EV_INVOKE_PENDING; 2712 EV_INVOKE_PENDING;
2251 } 2713 }
2252#endif 2714#endif
2253 2715
2254#if EV_CHILD_ENABLE 2716#if EV_CHILD_ENABLE
2255 if (ev_is_active (&childev)) 2717 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2256 { 2718 {
2257 ev_ref (EV_A); /* child watcher */ 2719 ev_ref (EV_A); /* child watcher */
2258 ev_signal_stop (EV_A_ &childev); 2720 ev_signal_stop (EV_A_ &childev);
2259 } 2721 }
2260#endif 2722#endif
… …
2262 if (ev_is_active (&pipe_w)) 2724 if (ev_is_active (&pipe_w))
2263 { 2725 {
2264 /*ev_ref (EV_A);*/ 2726 /*ev_ref (EV_A);*/
2265 /*ev_io_stop (EV_A_ &pipe_w);*/ 2727 /*ev_io_stop (EV_A_ &pipe_w);*/
2266 2728
2267#if EV_USE_EVENTFD
2268 if (evfd >= 0)
2269 close (evfd);
2270#endif
2271
2272 if (evpipe [0] >= 0)
2273 {
2274 EV_WIN32_CLOSE_FD (evpipe [0]); 2729 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2275 EV_WIN32_CLOSE_FD (evpipe [1]); 2730 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2276 }
2277 } 2731 }
2278 2732
2279#if EV_USE_SIGNALFD 2733#if EV_USE_SIGNALFD
2280 if (ev_is_active (&sigfd_w)) 2734 if (ev_is_active (&sigfd_w))
2281 close (sigfd); 2735 close (sigfd);
… …
2367#endif 2821#endif
2368#if EV_USE_INOTIFY 2822#if EV_USE_INOTIFY
2369 infy_fork (EV_A); 2823 infy_fork (EV_A);
2370#endif 2824#endif
2371 2825
2826#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2372 if (ev_is_active (&pipe_w)) 2827 if (ev_is_active (&pipe_w))
2373 { 2828 {
2374 /* 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 */
2375 2830
2376 ev_ref (EV_A); 2831 ev_ref (EV_A);
2377 ev_io_stop (EV_A_ &pipe_w); 2832 ev_io_stop (EV_A_ &pipe_w);
2378 2833
2379#if EV_USE_EVENTFD
2380 if (evfd >= 0)
2381 close (evfd);
2382#endif
2383
2384 if (evpipe [0] >= 0) 2834 if (evpipe [0] >= 0)
2385 {
2386 EV_WIN32_CLOSE_FD (evpipe [0]); 2835 EV_WIN32_CLOSE_FD (evpipe [0]);
2387 EV_WIN32_CLOSE_FD (evpipe [1]);
2388 }
2389 2836
2390#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2391 evpipe_init (EV_A); 2837 evpipe_init (EV_A);
2392 /* now iterate over everything, in case we missed something */ 2838 /* iterate over everything, in case we missed something before */
2393 pipecb (EV_A_ &pipe_w, EV_READ); 2839 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2394#endif
2395 } 2840 }
2841#endif
2396 2842
2397 postfork = 0; 2843 postfork = 0;
2398} 2844}
2399 2845
2400#if EV_MULTIPLICITY 2846#if EV_MULTIPLICITY
2401 2847
2402struct ev_loop * ecb_cold 2848struct ev_loop * ecb_cold
2403ev_loop_new (unsigned int flags) 2849ev_loop_new (unsigned int flags) EV_THROW
2404{ 2850{
2405 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2851 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2406 2852
2407 memset (EV_A, 0, sizeof (struct ev_loop)); 2853 memset (EV_A, 0, sizeof (struct ev_loop));
2408 loop_init (EV_A_ flags); 2854 loop_init (EV_A_ flags);
… …
2452} 2898}
2453#endif 2899#endif
2454 2900
2455#if EV_FEATURE_API 2901#if EV_FEATURE_API
2456void ecb_cold 2902void ecb_cold
2457ev_verify (EV_P) 2903ev_verify (EV_P) EV_THROW
2458{ 2904{
2459#if EV_VERIFY 2905#if EV_VERIFY
2460 int i; 2906 int i;
2461 WL w; 2907 WL w, w2;
2462 2908
2463 assert (activecnt >= -1); 2909 assert (activecnt >= -1);
2464 2910
2465 assert (fdchangemax >= fdchangecnt); 2911 assert (fdchangemax >= fdchangecnt);
2466 for (i = 0; i < fdchangecnt; ++i) 2912 for (i = 0; i < fdchangecnt; ++i)
2467 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2913 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2468 2914
2469 assert (anfdmax >= 0); 2915 assert (anfdmax >= 0);
2470 for (i = 0; i < anfdmax; ++i) 2916 for (i = 0; i < anfdmax; ++i)
2917 {
2918 int j = 0;
2919
2471 for (w = anfds [i].head; w; w = w->next) 2920 for (w = w2 = anfds [i].head; w; w = w->next)
2472 { 2921 {
2473 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
2474 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));
2475 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));
2476 } 2932 }
2933 }
2477 2934
2478 assert (timermax >= timercnt); 2935 assert (timermax >= timercnt);
2479 verify_heap (EV_A_ timers, timercnt); 2936 verify_heap (EV_A_ timers, timercnt);
2480 2937
2481#if EV_PERIODIC_ENABLE 2938#if EV_PERIODIC_ENABLE
… …
2531#if EV_MULTIPLICITY 2988#if EV_MULTIPLICITY
2532struct ev_loop * ecb_cold 2989struct ev_loop * ecb_cold
2533#else 2990#else
2534int 2991int
2535#endif 2992#endif
2536ev_default_loop (unsigned int flags) 2993ev_default_loop (unsigned int flags) EV_THROW
2537{ 2994{
2538 if (!ev_default_loop_ptr) 2995 if (!ev_default_loop_ptr)
2539 { 2996 {
2540#if EV_MULTIPLICITY 2997#if EV_MULTIPLICITY
2541 EV_P = ev_default_loop_ptr = &default_loop_struct; 2998 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2560 3017
2561 return ev_default_loop_ptr; 3018 return ev_default_loop_ptr;
2562} 3019}
2563 3020
2564void 3021void
2565ev_loop_fork (EV_P) 3022ev_loop_fork (EV_P) EV_THROW
2566{ 3023{
2567 postfork = 1; /* must be in line with ev_default_fork */ 3024 postfork = 1;
2568} 3025}
2569 3026
2570/*****************************************************************************/ 3027/*****************************************************************************/
2571 3028
2572void 3029void
… …
2574{ 3031{
2575 EV_CB_INVOKE ((W)w, revents); 3032 EV_CB_INVOKE ((W)w, revents);
2576} 3033}
2577 3034
2578unsigned int 3035unsigned int
2579ev_pending_count (EV_P) 3036ev_pending_count (EV_P) EV_THROW
2580{ 3037{
2581 int pri; 3038 int pri;
2582 unsigned int count = 0; 3039 unsigned int count = 0;
2583 3040
2584 for (pri = NUMPRI; pri--; ) 3041 for (pri = NUMPRI; pri--; )
… …
2588} 3045}
2589 3046
2590void noinline 3047void noinline
2591ev_invoke_pending (EV_P) 3048ev_invoke_pending (EV_P)
2592{ 3049{
2593 int pri; 3050 pendingpri = NUMPRI;
2594 3051
2595 for (pri = NUMPRI; pri--; ) 3052 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3053 {
3054 --pendingpri;
3055
2596 while (pendingcnt [pri]) 3056 while (pendingcnt [pendingpri])
2597 { 3057 {
2598 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3058 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2599 3059
2600 p->w->pending = 0; 3060 p->w->pending = 0;
2601 EV_CB_INVOKE (p->w, p->events); 3061 EV_CB_INVOKE (p->w, p->events);
2602 EV_FREQUENT_CHECK; 3062 EV_FREQUENT_CHECK;
2603 } 3063 }
3064 }
2604} 3065}
2605 3066
2606#if EV_IDLE_ENABLE 3067#if EV_IDLE_ENABLE
2607/* make idle watchers pending. this handles the "call-idle */ 3068/* make idle watchers pending. this handles the "call-idle */
2608/* only when higher priorities are idle" logic */ 3069/* only when higher priorities are idle" logic */
… …
2698{ 3159{
2699 EV_FREQUENT_CHECK; 3160 EV_FREQUENT_CHECK;
2700 3161
2701 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3162 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2702 { 3163 {
2703 int feed_count = 0;
2704
2705 do 3164 do
2706 { 3165 {
2707 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3166 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2708 3167
2709 /*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)));*/
… …
2843 3302
2844 mn_now = ev_rt_now; 3303 mn_now = ev_rt_now;
2845 } 3304 }
2846} 3305}
2847 3306
2848void 3307int
2849ev_run (EV_P_ int flags) 3308ev_run (EV_P_ int flags)
2850{ 3309{
2851#if EV_FEATURE_API 3310#if EV_FEATURE_API
2852 ++loop_depth; 3311 ++loop_depth;
2853#endif 3312#endif
… …
2966#endif 3425#endif
2967 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3426 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2968 backend_poll (EV_A_ waittime); 3427 backend_poll (EV_A_ waittime);
2969 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3428 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2970 3429
2971 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3430 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2972 3431
3432 ECB_MEMORY_FENCE_ACQUIRE;
2973 if (pipe_write_skipped) 3433 if (pipe_write_skipped)
2974 { 3434 {
2975 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)));
2976 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3436 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2977 } 3437 }
… …
3010 loop_done = EVBREAK_CANCEL; 3470 loop_done = EVBREAK_CANCEL;
3011 3471
3012#if EV_FEATURE_API 3472#if EV_FEATURE_API
3013 --loop_depth; 3473 --loop_depth;
3014#endif 3474#endif
3475
3476 return activecnt;
3015} 3477}
3016 3478
3017void 3479void
3018ev_break (EV_P_ int how) 3480ev_break (EV_P_ int how) EV_THROW
3019{ 3481{
3020 loop_done = how; 3482 loop_done = how;
3021} 3483}
3022 3484
3023void 3485void
3024ev_ref (EV_P) 3486ev_ref (EV_P) EV_THROW
3025{ 3487{
3026 ++activecnt; 3488 ++activecnt;
3027} 3489}
3028 3490
3029void 3491void
3030ev_unref (EV_P) 3492ev_unref (EV_P) EV_THROW
3031{ 3493{
3032 --activecnt; 3494 --activecnt;
3033} 3495}
3034 3496
3035void 3497void
3036ev_now_update (EV_P) 3498ev_now_update (EV_P) EV_THROW
3037{ 3499{
3038 time_update (EV_A_ 1e100); 3500 time_update (EV_A_ 1e100);
3039} 3501}
3040 3502
3041void 3503void
3042ev_suspend (EV_P) 3504ev_suspend (EV_P) EV_THROW
3043{ 3505{
3044 ev_now_update (EV_A); 3506 ev_now_update (EV_A);
3045} 3507}
3046 3508
3047void 3509void
3048ev_resume (EV_P) 3510ev_resume (EV_P) EV_THROW
3049{ 3511{
3050 ev_tstamp mn_prev = mn_now; 3512 ev_tstamp mn_prev = mn_now;
3051 3513
3052 ev_now_update (EV_A); 3514 ev_now_update (EV_A);
3053 timers_reschedule (EV_A_ mn_now - mn_prev); 3515 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3092 w->pending = 0; 3554 w->pending = 0;
3093 } 3555 }
3094} 3556}
3095 3557
3096int 3558int
3097ev_clear_pending (EV_P_ void *w) 3559ev_clear_pending (EV_P_ void *w) EV_THROW
3098{ 3560{
3099 W w_ = (W)w; 3561 W w_ = (W)w;
3100 int pending = w_->pending; 3562 int pending = w_->pending;
3101 3563
3102 if (expect_true (pending)) 3564 if (expect_true (pending))
… …
3135} 3597}
3136 3598
3137/*****************************************************************************/ 3599/*****************************************************************************/
3138 3600
3139void noinline 3601void noinline
3140ev_io_start (EV_P_ ev_io *w) 3602ev_io_start (EV_P_ ev_io *w) EV_THROW
3141{ 3603{
3142 int fd = w->fd; 3604 int fd = w->fd;
3143 3605
3144 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
3145 return; 3607 return;
… …
3151 3613
3152 ev_start (EV_A_ (W)w, 1); 3614 ev_start (EV_A_ (W)w, 1);
3153 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3615 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3154 wlist_add (&anfds[fd].head, (WL)w); 3616 wlist_add (&anfds[fd].head, (WL)w);
3155 3617
3618 /* common bug, apparently */
3619 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3620
3156 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);
3157 w->events &= ~EV__IOFDSET; 3622 w->events &= ~EV__IOFDSET;
3158 3623
3159 EV_FREQUENT_CHECK; 3624 EV_FREQUENT_CHECK;
3160} 3625}
3161 3626
3162void noinline 3627void noinline
3163ev_io_stop (EV_P_ ev_io *w) 3628ev_io_stop (EV_P_ ev_io *w) EV_THROW
3164{ 3629{
3165 clear_pending (EV_A_ (W)w); 3630 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 3631 if (expect_false (!ev_is_active (w)))
3167 return; 3632 return;
3168 3633
… …
3177 3642
3178 EV_FREQUENT_CHECK; 3643 EV_FREQUENT_CHECK;
3179} 3644}
3180 3645
3181void noinline 3646void noinline
3182ev_timer_start (EV_P_ ev_timer *w) 3647ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3183{ 3648{
3184 if (expect_false (ev_is_active (w))) 3649 if (expect_false (ev_is_active (w)))
3185 return; 3650 return;
3186 3651
3187 ev_at (w) += mn_now; 3652 ev_at (w) += mn_now;
… …
3201 3666
3202 /*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));*/
3203} 3668}
3204 3669
3205void noinline 3670void noinline
3206ev_timer_stop (EV_P_ ev_timer *w) 3671ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3207{ 3672{
3208 clear_pending (EV_A_ (W)w); 3673 clear_pending (EV_A_ (W)w);
3209 if (expect_false (!ev_is_active (w))) 3674 if (expect_false (!ev_is_active (w)))
3210 return; 3675 return;
3211 3676
… …
3231 3696
3232 EV_FREQUENT_CHECK; 3697 EV_FREQUENT_CHECK;
3233} 3698}
3234 3699
3235void noinline 3700void noinline
3236ev_timer_again (EV_P_ ev_timer *w) 3701ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3237{ 3702{
3238 EV_FREQUENT_CHECK; 3703 EV_FREQUENT_CHECK;
3704
3705 clear_pending (EV_A_ (W)w);
3239 3706
3240 if (ev_is_active (w)) 3707 if (ev_is_active (w))
3241 { 3708 {
3242 if (w->repeat) 3709 if (w->repeat)
3243 { 3710 {
… …
3256 3723
3257 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
3258} 3725}
3259 3726
3260ev_tstamp 3727ev_tstamp
3261ev_timer_remaining (EV_P_ ev_timer *w) 3728ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3262{ 3729{
3263 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3730 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3264} 3731}
3265 3732
3266#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
3267void noinline 3734void noinline
3268ev_periodic_start (EV_P_ ev_periodic *w) 3735ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3269{ 3736{
3270 if (expect_false (ev_is_active (w))) 3737 if (expect_false (ev_is_active (w)))
3271 return; 3738 return;
3272 3739
3273 if (w->reschedule_cb) 3740 if (w->reschedule_cb)
… …
3293 3760
3294 /*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));*/
3295} 3762}
3296 3763
3297void noinline 3764void noinline
3298ev_periodic_stop (EV_P_ ev_periodic *w) 3765ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3299{ 3766{
3300 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
3301 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
3302 return; 3769 return;
3303 3770
… …
3321 3788
3322 EV_FREQUENT_CHECK; 3789 EV_FREQUENT_CHECK;
3323} 3790}
3324 3791
3325void noinline 3792void noinline
3326ev_periodic_again (EV_P_ ev_periodic *w) 3793ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3327{ 3794{
3328 /* TODO: use adjustheap and recalculation */ 3795 /* TODO: use adjustheap and recalculation */
3329 ev_periodic_stop (EV_A_ w); 3796 ev_periodic_stop (EV_A_ w);
3330 ev_periodic_start (EV_A_ w); 3797 ev_periodic_start (EV_A_ w);
3331} 3798}
… …
3336#endif 3803#endif
3337 3804
3338#if EV_SIGNAL_ENABLE 3805#if EV_SIGNAL_ENABLE
3339 3806
3340void noinline 3807void noinline
3341ev_signal_start (EV_P_ ev_signal *w) 3808ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3342{ 3809{
3343 if (expect_false (ev_is_active (w))) 3810 if (expect_false (ev_is_active (w)))
3344 return; 3811 return;
3345 3812
3346 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));
… …
3348#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
3349 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",
3350 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3817 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3351 3818
3352 signals [w->signum - 1].loop = EV_A; 3819 signals [w->signum - 1].loop = EV_A;
3820 ECB_MEMORY_FENCE_RELEASE;
3353#endif 3821#endif
3354 3822
3355 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
3356 3824
3357#if EV_USE_SIGNALFD 3825#if EV_USE_SIGNALFD
… …
3417 3885
3418 EV_FREQUENT_CHECK; 3886 EV_FREQUENT_CHECK;
3419} 3887}
3420 3888
3421void noinline 3889void noinline
3422ev_signal_stop (EV_P_ ev_signal *w) 3890ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3423{ 3891{
3424 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
3426 return; 3894 return;
3427 3895
… …
3458#endif 3926#endif
3459 3927
3460#if EV_CHILD_ENABLE 3928#if EV_CHILD_ENABLE
3461 3929
3462void 3930void
3463ev_child_start (EV_P_ ev_child *w) 3931ev_child_start (EV_P_ ev_child *w) EV_THROW
3464{ 3932{
3465#if EV_MULTIPLICITY 3933#if EV_MULTIPLICITY
3466 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));
3467#endif 3935#endif
3468 if (expect_false (ev_is_active (w))) 3936 if (expect_false (ev_is_active (w)))
… …
3475 3943
3476 EV_FREQUENT_CHECK; 3944 EV_FREQUENT_CHECK;
3477} 3945}
3478 3946
3479void 3947void
3480ev_child_stop (EV_P_ ev_child *w) 3948ev_child_stop (EV_P_ ev_child *w) EV_THROW
3481{ 3949{
3482 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
3484 return; 3952 return;
3485 3953
… …
3512# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3513 3981
3514static void noinline 3982static void noinline
3515infy_add (EV_P_ ev_stat *w) 3983infy_add (EV_P_ ev_stat *w)
3516{ 3984{
3517 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);
3518 3989
3519 if (w->wd >= 0) 3990 if (w->wd >= 0)
3520 { 3991 {
3521 struct statfs sfs; 3992 struct statfs sfs;
3522 3993
… …
3526 3997
3527 if (!fs_2625) 3998 if (!fs_2625)
3528 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3999 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3529 else if (!statfs (w->path, &sfs) 4000 else if (!statfs (w->path, &sfs)
3530 && (sfs.f_type == 0x1373 /* devfs */ 4001 && (sfs.f_type == 0x1373 /* devfs */
4002 || sfs.f_type == 0x4006 /* fat */
4003 || sfs.f_type == 0x4d44 /* msdos */
3531 || 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 */
3532 || sfs.f_type == 0x3153464a /* jfs */ 4008 || sfs.f_type == 0x3153464a /* jfs */
4009 || sfs.f_type == 0x9123683e /* btrfs */
3533 || sfs.f_type == 0x52654973 /* reiser3 */ 4010 || sfs.f_type == 0x52654973 /* reiser3 */
3534 || sfs.f_type == 0x01021994 /* tempfs */ 4011 || sfs.f_type == 0x01021994 /* tmpfs */
3535 || sfs.f_type == 0x58465342 /* xfs */)) 4012 || sfs.f_type == 0x58465342 /* xfs */))
3536 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4013 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3537 else 4014 else
3538 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 */
3539 } 4016 }
… …
3652} 4129}
3653 4130
3654inline_size int 4131inline_size int
3655infy_newfd (void) 4132infy_newfd (void)
3656{ 4133{
3657#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4134#if defined IN_CLOEXEC && defined IN_NONBLOCK
3658 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4135 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3659 if (fd >= 0) 4136 if (fd >= 0)
3660 return fd; 4137 return fd;
3661#endif 4138#endif
3662 return inotify_init (); 4139 return inotify_init ();
… …
3737#else 4214#else
3738# define EV_LSTAT(p,b) lstat (p, b) 4215# define EV_LSTAT(p,b) lstat (p, b)
3739#endif 4216#endif
3740 4217
3741void 4218void
3742ev_stat_stat (EV_P_ ev_stat *w) 4219ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3743{ 4220{
3744 if (lstat (w->path, &w->attr) < 0) 4221 if (lstat (w->path, &w->attr) < 0)
3745 w->attr.st_nlink = 0; 4222 w->attr.st_nlink = 0;
3746 else if (!w->attr.st_nlink) 4223 else if (!w->attr.st_nlink)
3747 w->attr.st_nlink = 1; 4224 w->attr.st_nlink = 1;
… …
3786 ev_feed_event (EV_A_ w, EV_STAT); 4263 ev_feed_event (EV_A_ w, EV_STAT);
3787 } 4264 }
3788} 4265}
3789 4266
3790void 4267void
3791ev_stat_start (EV_P_ ev_stat *w) 4268ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3792{ 4269{
3793 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3794 return; 4271 return;
3795 4272
3796 ev_stat_stat (EV_A_ w); 4273 ev_stat_stat (EV_A_ w);
… …
3817 4294
3818 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3819} 4296}
3820 4297
3821void 4298void
3822ev_stat_stop (EV_P_ ev_stat *w) 4299ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3823{ 4300{
3824 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3825 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3826 return; 4303 return;
3827 4304
… …
3843} 4320}
3844#endif 4321#endif
3845 4322
3846#if EV_IDLE_ENABLE 4323#if EV_IDLE_ENABLE
3847void 4324void
3848ev_idle_start (EV_P_ ev_idle *w) 4325ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3849{ 4326{
3850 if (expect_false (ev_is_active (w))) 4327 if (expect_false (ev_is_active (w)))
3851 return; 4328 return;
3852 4329
3853 pri_adjust (EV_A_ (W)w); 4330 pri_adjust (EV_A_ (W)w);
… …
3866 4343
3867 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3868} 4345}
3869 4346
3870void 4347void
3871ev_idle_stop (EV_P_ ev_idle *w) 4348ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3872{ 4349{
3873 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3874 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3875 return; 4352 return;
3876 4353
… …
3890} 4367}
3891#endif 4368#endif
3892 4369
3893#if EV_PREPARE_ENABLE 4370#if EV_PREPARE_ENABLE
3894void 4371void
3895ev_prepare_start (EV_P_ ev_prepare *w) 4372ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3896{ 4373{
3897 if (expect_false (ev_is_active (w))) 4374 if (expect_false (ev_is_active (w)))
3898 return; 4375 return;
3899 4376
3900 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
… …
3905 4382
3906 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
3907} 4384}
3908 4385
3909void 4386void
3910ev_prepare_stop (EV_P_ ev_prepare *w) 4387ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3911{ 4388{
3912 clear_pending (EV_A_ (W)w); 4389 clear_pending (EV_A_ (W)w);
3913 if (expect_false (!ev_is_active (w))) 4390 if (expect_false (!ev_is_active (w)))
3914 return; 4391 return;
3915 4392
… …
3928} 4405}
3929#endif 4406#endif
3930 4407
3931#if EV_CHECK_ENABLE 4408#if EV_CHECK_ENABLE
3932void 4409void
3933ev_check_start (EV_P_ ev_check *w) 4410ev_check_start (EV_P_ ev_check *w) EV_THROW
3934{ 4411{
3935 if (expect_false (ev_is_active (w))) 4412 if (expect_false (ev_is_active (w)))
3936 return; 4413 return;
3937 4414
3938 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
… …
3943 4420
3944 EV_FREQUENT_CHECK; 4421 EV_FREQUENT_CHECK;
3945} 4422}
3946 4423
3947void 4424void
3948ev_check_stop (EV_P_ ev_check *w) 4425ev_check_stop (EV_P_ ev_check *w) EV_THROW
3949{ 4426{
3950 clear_pending (EV_A_ (W)w); 4427 clear_pending (EV_A_ (W)w);
3951 if (expect_false (!ev_is_active (w))) 4428 if (expect_false (!ev_is_active (w)))
3952 return; 4429 return;
3953 4430
… …
3966} 4443}
3967#endif 4444#endif
3968 4445
3969#if EV_EMBED_ENABLE 4446#if EV_EMBED_ENABLE
3970void noinline 4447void noinline
3971ev_embed_sweep (EV_P_ ev_embed *w) 4448ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3972{ 4449{
3973 ev_run (w->other, EVRUN_NOWAIT); 4450 ev_run (w->other, EVRUN_NOWAIT);
3974} 4451}
3975 4452
3976static void 4453static void
… …
4024 ev_idle_stop (EV_A_ idle); 4501 ev_idle_stop (EV_A_ idle);
4025} 4502}
4026#endif 4503#endif
4027 4504
4028void 4505void
4029ev_embed_start (EV_P_ ev_embed *w) 4506ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4030{ 4507{
4031 if (expect_false (ev_is_active (w))) 4508 if (expect_false (ev_is_active (w)))
4032 return; 4509 return;
4033 4510
4034 { 4511 {
… …
4055 4532
4056 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
4057} 4534}
4058 4535
4059void 4536void
4060ev_embed_stop (EV_P_ ev_embed *w) 4537ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4061{ 4538{
4062 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
4063 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
4064 return; 4541 return;
4065 4542
… …
4075} 4552}
4076#endif 4553#endif
4077 4554
4078#if EV_FORK_ENABLE 4555#if EV_FORK_ENABLE
4079void 4556void
4080ev_fork_start (EV_P_ ev_fork *w) 4557ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4081{ 4558{
4082 if (expect_false (ev_is_active (w))) 4559 if (expect_false (ev_is_active (w)))
4083 return; 4560 return;
4084 4561
4085 EV_FREQUENT_CHECK; 4562 EV_FREQUENT_CHECK;
… …
4090 4567
4091 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
4092} 4569}
4093 4570
4094void 4571void
4095ev_fork_stop (EV_P_ ev_fork *w) 4572ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4096{ 4573{
4097 clear_pending (EV_A_ (W)w); 4574 clear_pending (EV_A_ (W)w);
4098 if (expect_false (!ev_is_active (w))) 4575 if (expect_false (!ev_is_active (w)))
4099 return; 4576 return;
4100 4577
… …
4113} 4590}
4114#endif 4591#endif
4115 4592
4116#if EV_CLEANUP_ENABLE 4593#if EV_CLEANUP_ENABLE
4117void 4594void
4118ev_cleanup_start (EV_P_ ev_cleanup *w) 4595ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4119{ 4596{
4120 if (expect_false (ev_is_active (w))) 4597 if (expect_false (ev_is_active (w)))
4121 return; 4598 return;
4122 4599
4123 EV_FREQUENT_CHECK; 4600 EV_FREQUENT_CHECK;
… …
4130 ev_unref (EV_A); 4607 ev_unref (EV_A);
4131 EV_FREQUENT_CHECK; 4608 EV_FREQUENT_CHECK;
4132} 4609}
4133 4610
4134void 4611void
4135ev_cleanup_stop (EV_P_ ev_cleanup *w) 4612ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4136{ 4613{
4137 clear_pending (EV_A_ (W)w); 4614 clear_pending (EV_A_ (W)w);
4138 if (expect_false (!ev_is_active (w))) 4615 if (expect_false (!ev_is_active (w)))
4139 return; 4616 return;
4140 4617
… …
4154} 4631}
4155#endif 4632#endif
4156 4633
4157#if EV_ASYNC_ENABLE 4634#if EV_ASYNC_ENABLE
4158void 4635void
4159ev_async_start (EV_P_ ev_async *w) 4636ev_async_start (EV_P_ ev_async *w) EV_THROW
4160{ 4637{
4161 if (expect_false (ev_is_active (w))) 4638 if (expect_false (ev_is_active (w)))
4162 return; 4639 return;
4163 4640
4164 w->sent = 0; 4641 w->sent = 0;
… …
4173 4650
4174 EV_FREQUENT_CHECK; 4651 EV_FREQUENT_CHECK;
4175} 4652}
4176 4653
4177void 4654void
4178ev_async_stop (EV_P_ ev_async *w) 4655ev_async_stop (EV_P_ ev_async *w) EV_THROW
4179{ 4656{
4180 clear_pending (EV_A_ (W)w); 4657 clear_pending (EV_A_ (W)w);
4181 if (expect_false (!ev_is_active (w))) 4658 if (expect_false (!ev_is_active (w)))
4182 return; 4659 return;
4183 4660
… …
4194 4671
4195 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
4196} 4673}
4197 4674
4198void 4675void
4199ev_async_send (EV_P_ ev_async *w) 4676ev_async_send (EV_P_ ev_async *w) EV_THROW
4200{ 4677{
4201 w->sent = 1; 4678 w->sent = 1;
4202 evpipe_write (EV_A_ &async_pending); 4679 evpipe_write (EV_A_ &async_pending);
4203} 4680}
4204#endif 4681#endif
… …
4241 4718
4242 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));
4243} 4720}
4244 4721
4245void 4722void
4246ev_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
4247{ 4724{
4248 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));
4249 4726
4250 if (expect_false (!once)) 4727 if (expect_false (!once))
4251 { 4728 {
… …
4273 4750
4274/*****************************************************************************/ 4751/*****************************************************************************/
4275 4752
4276#if EV_WALK_ENABLE 4753#if EV_WALK_ENABLE
4277void ecb_cold 4754void ecb_cold
4278ev_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
4279{ 4756{
4280 int i, j; 4757 int i, j;
4281 ev_watcher_list *wl, *wn; 4758 ev_watcher_list *wl, *wn;
4282 4759
4283 if (types & (EV_IO | EV_EMBED)) 4760 if (types & (EV_IO | EV_EMBED))
… …
4389 4866
4390#if EV_MULTIPLICITY 4867#if EV_MULTIPLICITY
4391 #include "ev_wrap.h" 4868 #include "ev_wrap.h"
4392#endif 4869#endif
4393 4870
4394EV_CPP(})
4395

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