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Comparing libev/ev.c (file contents):
Revision 1.401 by root, Tue Dec 20 04:08:35 2011 UTC vs.
Revision 1.460 by root, Tue Oct 29 12:53:38 2013 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 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
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
198
188#ifndef _WIN32 199#ifndef _WIN32
189# include <sys/time.h> 200# include <sys/time.h>
190# include <sys/wait.h> 201# include <sys/wait.h>
191# include <unistd.h> 202# include <unistd.h>
192#else 203#else
193# include <io.h> 204# include <io.h>
194# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
195# include <windows.h> 207# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
198# endif 210# endif
199# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
208#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
209 221
210/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
211 223
212/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 225#if defined EV_NSIG
214/* use what's provided */ 226/* use what's provided */
215#elif defined (NSIG) 227#elif defined NSIG
216# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 229#elif defined _NSIG
218# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 231#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 233#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 237#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 239#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 243#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 245#else
234# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 247#endif
239 248
240#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
242#endif 251#endif
243 252
244#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 256# else
248# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
249# endif 258# endif
250#endif 259#endif
251 260
252#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 264# else
256# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
257# endif 266# endif
258#endif 267#endif
… …
345 354
346#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 357#endif
349 358
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
350/* 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, */
351/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 378# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
358# else 383# else
… …
361# endif 386# endif
362#endif 387#endif
363 388
364/* 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 */
365 390
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
375#endif 394#endif
376 395
… …
384# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
385#endif 404#endif
386 405
387#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
388/* 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 */
389# if !defined(_WIN32) && !defined(__hpux) 408# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 409# include <sys/select.h>
391# endif 410# endif
392#endif 411#endif
393 412
394#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
… …
397/* 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 */
398# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
401# endif 420# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 421#endif
407 422
408#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
409/* 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 */
410# include <stdint.h> 425# include <stdint.h>
… …
467/* 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 */
468/* ECB.H BEGIN */ 483/* ECB.H BEGIN */
469/* 484/*
470 * libecb - http://software.schmorp.de/pkg/libecb 485 * libecb - http://software.schmorp.de/pkg/libecb
471 * 486 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 487 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 488 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 489 * All rights reserved.
475 * 490 *
476 * 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-
477 * tion, are permitted provided that the following conditions are met: 492 * tion, are permitted provided that the following conditions are met:
… …
496 */ 511 */
497 512
498#ifndef ECB_H 513#ifndef ECB_H
499#define ECB_H 514#define ECB_H
500 515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
501#ifdef _WIN32 519#ifdef _WIN32
502 typedef signed char int8_t; 520 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 521 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 522 typedef signed short int16_t;
505 typedef unsigned short uint16_t; 523 typedef unsigned short uint16_t;
… …
510 typedef unsigned long long uint64_t; 528 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 529 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 530 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 531 typedef unsigned __int64 uint64_t;
514 #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
515#else 542#else
516 #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 __x86_64 || _M_AMD64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
557 #endif
517#endif 558#endif
518 559
519/* many compilers define _GNUC_ to some versions but then only implement 560/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 561 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 562 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 563 * or so.
523 * 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
524 * 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.
525 */ 566 */
526#ifndef ECB_GCC_VERSION 567#ifndef ECB_GCC_VERSION
527 #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__
528 #define ECB_GCC_VERSION(major,minor) 0 569 #define ECB_GCC_VERSION(major,minor) 0
529 #else 570 #else
530 #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)))
531 #endif 572 #endif
532#endif 573#endif
533 574
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
576#define ECB_C99 (__STDC_VERSION__ >= 199901L)
577#define ECB_C11 (__STDC_VERSION__ >= 201112L)
578#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L)
580
581#if ECB_CPP
582 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END }
585#else
586 #define ECB_EXTERN_C extern
587 #define ECB_EXTERN_C_BEG
588 #define ECB_EXTERN_C_END
589#endif
590
534/*****************************************************************************/ 591/*****************************************************************************/
535 592
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 593/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 594/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 595
539#if ECB_NO_THREADS || ECB_NO_SMP 596#if ECB_NO_THREADS
597 #define ECB_NO_SMP 1
598#endif
599
600#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 601 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 602#endif
542 603
543#ifndef ECB_MEMORY_FENCE 604#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386__ 606 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
549 #elif __amd64 610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 616 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif __sparc || __sparc__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
628 #elif defined __mips__
629 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
630 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
632 #elif defined __alpha__
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
634 #elif defined __hppa__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
636 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
637 #elif defined __ia64__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
639 #elif defined __m68k__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
641 #elif defined __m88k__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
643 #elif defined __sh__
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
561 #endif 645 #endif
562 #endif 646 #endif
563#endif 647#endif
564 648
565#ifndef ECB_MEMORY_FENCE 649#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
653
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
655 * without risking compile time errors with other compilers. We *could*
656 * define our own ecb_clang_has_feature, but I just can't be bothered to work
657 * around this shit time and again.
658 * #elif defined __clang && __has_feature (cxx_atomic)
659 * // see comment below (stdatomic.h) about the C11 memory model.
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */
662
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
567 #define ECB_MEMORY_FENCE __sync_synchronize () 664 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 665 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 666 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 667 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 668 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 669 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32) 670 #elif defined _WIN32
576 #include <WinNT.h> 671 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 672 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
673 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
674 #include <mbarrier.h>
675 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
676 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
677 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
678 #elif __xlC__
679 #define ECB_MEMORY_FENCE __sync ()
680 #endif
681#endif
682
683#ifndef ECB_MEMORY_FENCE
684 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
685 /* we assume that these memory fences work on all variables/all memory accesses, */
686 /* not just C11 atomics and atomic accesses */
687 #include <stdatomic.h>
688 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
689 /* any fence other than seq_cst, which isn't very efficient for us. */
690 /* Why that is, we don't know - either the C11 memory model is quite useless */
691 /* for most usages, or gcc and clang have a bug */
692 /* I *currently* lean towards the latter, and inefficiently implement */
693 /* all three of ecb's fences as a seq_cst fence */
694 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
578 #endif 695 #endif
579#endif 696#endif
580 697
581#ifndef ECB_MEMORY_FENCE 698#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS 699 #if !ECB_AVOID_PTHREADS
… …
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 711 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 712 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif 713 #endif
597#endif 714#endif
598 715
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 716#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 717 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif 718#endif
602 719
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 720#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 721 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif 722#endif
606 723
607/*****************************************************************************/ 724/*****************************************************************************/
608
609#define ECB_C99 (__STDC_VERSION__ >= 199901L)
610 725
611#if __cplusplus 726#if __cplusplus
612 #define ecb_inline static inline 727 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5) 728#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__ 729 #define ecb_inline static __inline__
… …
653#elif ECB_GCC_VERSION(3,0) 768#elif ECB_GCC_VERSION(3,0)
654 #define ecb_decltype(x) __typeof(x) 769 #define ecb_decltype(x) __typeof(x)
655#endif 770#endif
656 771
657#define ecb_noinline ecb_attribute ((__noinline__)) 772#define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__))
659#define ecb_unused ecb_attribute ((__unused__)) 773#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__)) 774#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__)) 775#define ecb_pure ecb_attribute ((__pure__))
776
777#if ECB_C11
778 #define ecb_noreturn _Noreturn
779#else
780 #define ecb_noreturn ecb_attribute ((__noreturn__))
781#endif
662 782
663#if ECB_GCC_VERSION(4,3) 783#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__)) 784 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__)) 785 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__)) 786 #define ecb_cold ecb_attribute ((__cold__))
… …
757 877
758 return r + ecb_ld32 (x); 878 return r + ecb_ld32 (x);
759 } 879 }
760#endif 880#endif
761 881
882ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
883ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
884ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
885ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
886
887ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
888ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
889{
890 return ( (x * 0x0802U & 0x22110U)
891 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
892}
893
894ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
895ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
896{
897 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
898 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
899 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
900 x = ( x >> 8 ) | ( x << 8);
901
902 return x;
903}
904
905ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
906ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
907{
908 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
909 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
910 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
911 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
912 x = ( x >> 16 ) | ( x << 16);
913
914 return x;
915}
916
762/* popcount64 is only available on 64 bit cpus as gcc builtin */ 917/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */ 918/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 919ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
765ecb_function_ int 920ecb_function_ int
766ecb_popcount64 (uint64_t x) 921ecb_popcount64 (uint64_t x)
… …
815 970
816#if ECB_GCC_VERSION(4,5) 971#if ECB_GCC_VERSION(4,5)
817 #define ecb_unreachable() __builtin_unreachable () 972 #define ecb_unreachable() __builtin_unreachable ()
818#else 973#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */ 974 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 975 ecb_inline void ecb_unreachable (void) ecb_noreturn;
821 ecb_function_ void ecb_unreachable (void) { } 976 ecb_inline void ecb_unreachable (void) { }
822#endif 977#endif
823 978
824/* try to tell the compiler that some condition is definitely true */ 979/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 980#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
826 981
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 982ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
828ecb_function_ unsigned char 983ecb_inline unsigned char
829ecb_byteorder_helper (void) 984ecb_byteorder_helper (void)
830{ 985{
831 const uint32_t u = 0x11223344; 986 /* the union code still generates code under pressure in gcc, */
832 return *(unsigned char *)&u; 987 /* but less than using pointers, and always seems to */
988 /* successfully return a constant. */
989 /* the reason why we have this horrible preprocessor mess */
990 /* is to avoid it in all cases, at least on common architectures */
991 /* or when using a recent enough gcc version (>= 4.6) */
992#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
993 return 0x44;
994#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
995 return 0x44;
996#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
997 return 0x11;
998#else
999 union
1000 {
1001 uint32_t i;
1002 uint8_t c;
1003 } u = { 0x11223344 };
1004 return u.c;
1005#endif
833} 1006}
834 1007
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1008ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1009ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1010ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1011ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
839 1012
840#if ECB_GCC_VERSION(3,0) || ECB_C99 1013#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1014 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else 1015#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1016 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
… …
868 } 1041 }
869#else 1042#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1043 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif 1044#endif
872 1045
1046/*******************************************************************************/
1047/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1048
1049/* basically, everything uses "ieee pure-endian" floating point numbers */
1050/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1051#if 0 \
1052 || __i386 || __i386__ \
1053 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1054 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1055 || defined __arm__ && defined __ARM_EABI__ \
1056 || defined __s390__ || defined __s390x__ \
1057 || defined __mips__ \
1058 || defined __alpha__ \
1059 || defined __hppa__ \
1060 || defined __ia64__ \
1061 || defined __m68k__ \
1062 || defined __m88k__ \
1063 || defined __sh__ \
1064 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1065 #define ECB_STDFP 1
1066 #include <string.h> /* for memcpy */
1067#else
1068 #define ECB_STDFP 0
1069#endif
1070
1071#ifndef ECB_NO_LIBM
1072
1073 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1074
1075 #ifdef NEN
1076 #define ECB_NAN NAN
1077 #else
1078 #define ECB_NAN INFINITY
1079 #endif
1080
1081 /* converts an ieee half/binary16 to a float */
1082 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1083 ecb_function_ float
1084 ecb_binary16_to_float (uint16_t x)
1085 {
1086 int e = (x >> 10) & 0x1f;
1087 int m = x & 0x3ff;
1088 float r;
1089
1090 if (!e ) r = ldexpf (m , -24);
1091 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1092 else if (m ) r = ECB_NAN;
1093 else r = INFINITY;
1094
1095 return x & 0x8000 ? -r : r;
1096 }
1097
1098 /* convert a float to ieee single/binary32 */
1099 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1100 ecb_function_ uint32_t
1101 ecb_float_to_binary32 (float x)
1102 {
1103 uint32_t r;
1104
1105 #if ECB_STDFP
1106 memcpy (&r, &x, 4);
1107 #else
1108 /* slow emulation, works for anything but -0 */
1109 uint32_t m;
1110 int e;
1111
1112 if (x == 0e0f ) return 0x00000000U;
1113 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1114 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1115 if (x != x ) return 0x7fbfffffU;
1116
1117 m = frexpf (x, &e) * 0x1000000U;
1118
1119 r = m & 0x80000000U;
1120
1121 if (r)
1122 m = -m;
1123
1124 if (e <= -126)
1125 {
1126 m &= 0xffffffU;
1127 m >>= (-125 - e);
1128 e = -126;
1129 }
1130
1131 r |= (e + 126) << 23;
1132 r |= m & 0x7fffffU;
1133 #endif
1134
1135 return r;
1136 }
1137
1138 /* converts an ieee single/binary32 to a float */
1139 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1140 ecb_function_ float
1141 ecb_binary32_to_float (uint32_t x)
1142 {
1143 float r;
1144
1145 #if ECB_STDFP
1146 memcpy (&r, &x, 4);
1147 #else
1148 /* emulation, only works for normals and subnormals and +0 */
1149 int neg = x >> 31;
1150 int e = (x >> 23) & 0xffU;
1151
1152 x &= 0x7fffffU;
1153
1154 if (e)
1155 x |= 0x800000U;
1156 else
1157 e = 1;
1158
1159 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1160 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1161
1162 r = neg ? -r : r;
1163 #endif
1164
1165 return r;
1166 }
1167
1168 /* convert a double to ieee double/binary64 */
1169 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1170 ecb_function_ uint64_t
1171 ecb_double_to_binary64 (double x)
1172 {
1173 uint64_t r;
1174
1175 #if ECB_STDFP
1176 memcpy (&r, &x, 8);
1177 #else
1178 /* slow emulation, works for anything but -0 */
1179 uint64_t m;
1180 int e;
1181
1182 if (x == 0e0 ) return 0x0000000000000000U;
1183 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1184 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1185 if (x != x ) return 0X7ff7ffffffffffffU;
1186
1187 m = frexp (x, &e) * 0x20000000000000U;
1188
1189 r = m & 0x8000000000000000;;
1190
1191 if (r)
1192 m = -m;
1193
1194 if (e <= -1022)
1195 {
1196 m &= 0x1fffffffffffffU;
1197 m >>= (-1021 - e);
1198 e = -1022;
1199 }
1200
1201 r |= ((uint64_t)(e + 1022)) << 52;
1202 r |= m & 0xfffffffffffffU;
1203 #endif
1204
1205 return r;
1206 }
1207
1208 /* converts an ieee double/binary64 to a double */
1209 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1210 ecb_function_ double
1211 ecb_binary64_to_double (uint64_t x)
1212 {
1213 double r;
1214
1215 #if ECB_STDFP
1216 memcpy (&r, &x, 8);
1217 #else
1218 /* emulation, only works for normals and subnormals and +0 */
1219 int neg = x >> 63;
1220 int e = (x >> 52) & 0x7ffU;
1221
1222 x &= 0xfffffffffffffU;
1223
1224 if (e)
1225 x |= 0x10000000000000U;
1226 else
1227 e = 1;
1228
1229 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1230 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1231
1232 r = neg ? -r : r;
1233 #endif
1234
1235 return r;
1236 }
1237
1238#endif
1239
873#endif 1240#endif
874 1241
875/* ECB.H END */ 1242/* ECB.H END */
876 1243
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1244#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is 1245/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev 1246 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1247 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops. 1248 * libev, in which cases the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread, 1249 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences. 1250 * which will then provide the memory fences.
884 */ 1251 */
885# error "memory fences not defined for your architecture, please report" 1252# error "memory fences not defined for your architecture, please report"
886#endif 1253#endif
… …
1043{ 1410{
1044 write (STDERR_FILENO, msg, strlen (msg)); 1411 write (STDERR_FILENO, msg, strlen (msg));
1045} 1412}
1046#endif 1413#endif
1047 1414
1048static void (*syserr_cb)(const char *msg); 1415static void (*syserr_cb)(const char *msg) EV_THROW;
1049 1416
1050void ecb_cold 1417void ecb_cold
1051ev_set_syserr_cb (void (*cb)(const char *msg)) 1418ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1052{ 1419{
1053 syserr_cb = cb; 1420 syserr_cb = cb;
1054} 1421}
1055 1422
1056static void noinline ecb_cold 1423static void noinline ecb_cold
… …
1074 abort (); 1441 abort ();
1075 } 1442 }
1076} 1443}
1077 1444
1078static void * 1445static void *
1079ev_realloc_emul (void *ptr, long size) 1446ev_realloc_emul (void *ptr, long size) EV_THROW
1080{ 1447{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
1084 /* some systems, notably openbsd and darwin, fail to properly 1448 /* some systems, notably openbsd and darwin, fail to properly
1085 * implement realloc (x, 0) (as required by both ansi c-89 and 1449 * implement realloc (x, 0) (as required by both ansi c-89 and
1086 * the single unix specification, so work around them here. 1450 * the single unix specification, so work around them here.
1451 * recently, also (at least) fedora and debian started breaking it,
1452 * despite documenting it otherwise.
1087 */ 1453 */
1088 1454
1089 if (size) 1455 if (size)
1090 return realloc (ptr, size); 1456 return realloc (ptr, size);
1091 1457
1092 free (ptr); 1458 free (ptr);
1093 return 0; 1459 return 0;
1094#endif
1095} 1460}
1096 1461
1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1462static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1098 1463
1099void ecb_cold 1464void ecb_cold
1100ev_set_allocator (void *(*cb)(void *ptr, long size)) 1465ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1101{ 1466{
1102 alloc = cb; 1467 alloc = cb;
1103} 1468}
1104 1469
1105inline_speed void * 1470inline_speed void *
… …
1193 #undef VAR 1558 #undef VAR
1194 }; 1559 };
1195 #include "ev_wrap.h" 1560 #include "ev_wrap.h"
1196 1561
1197 static struct ev_loop default_loop_struct; 1562 static struct ev_loop default_loop_struct;
1198 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a defintiino despite extern */ 1563 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1199 1564
1200#else 1565#else
1201 1566
1202 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a defintiino despite extern */ 1567 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1203 #define VAR(name,decl) static decl; 1568 #define VAR(name,decl) static decl;
1204 #include "ev_vars.h" 1569 #include "ev_vars.h"
1205 #undef VAR 1570 #undef VAR
1206 1571
1207 static int ev_default_loop_ptr; 1572 static int ev_default_loop_ptr;
… …
1222 1587
1223/*****************************************************************************/ 1588/*****************************************************************************/
1224 1589
1225#ifndef EV_HAVE_EV_TIME 1590#ifndef EV_HAVE_EV_TIME
1226ev_tstamp 1591ev_tstamp
1227ev_time (void) 1592ev_time (void) EV_THROW
1228{ 1593{
1229#if EV_USE_REALTIME 1594#if EV_USE_REALTIME
1230 if (expect_true (have_realtime)) 1595 if (expect_true (have_realtime))
1231 { 1596 {
1232 struct timespec ts; 1597 struct timespec ts;
… …
1256 return ev_time (); 1621 return ev_time ();
1257} 1622}
1258 1623
1259#if EV_MULTIPLICITY 1624#if EV_MULTIPLICITY
1260ev_tstamp 1625ev_tstamp
1261ev_now (EV_P) 1626ev_now (EV_P) EV_THROW
1262{ 1627{
1263 return ev_rt_now; 1628 return ev_rt_now;
1264} 1629}
1265#endif 1630#endif
1266 1631
1267void 1632void
1268ev_sleep (ev_tstamp delay) 1633ev_sleep (ev_tstamp delay) EV_THROW
1269{ 1634{
1270 if (delay > 0.) 1635 if (delay > 0.)
1271 { 1636 {
1272#if EV_USE_NANOSLEEP 1637#if EV_USE_NANOSLEEP
1273 struct timespec ts; 1638 struct timespec ts;
1274 1639
1275 EV_TS_SET (ts, delay); 1640 EV_TS_SET (ts, delay);
1276 nanosleep (&ts, 0); 1641 nanosleep (&ts, 0);
1277#elif defined(_WIN32) 1642#elif defined _WIN32
1278 Sleep ((unsigned long)(delay * 1e3)); 1643 Sleep ((unsigned long)(delay * 1e3));
1279#else 1644#else
1280 struct timeval tv; 1645 struct timeval tv;
1281 1646
1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1647 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1354pendingcb (EV_P_ ev_prepare *w, int revents) 1719pendingcb (EV_P_ ev_prepare *w, int revents)
1355{ 1720{
1356} 1721}
1357 1722
1358void noinline 1723void noinline
1359ev_feed_event (EV_P_ void *w, int revents) 1724ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1360{ 1725{
1361 W w_ = (W)w; 1726 W w_ = (W)w;
1362 int pri = ABSPRI (w_); 1727 int pri = ABSPRI (w_);
1363 1728
1364 if (expect_false (w_->pending)) 1729 if (expect_false (w_->pending))
… …
1368 w_->pending = ++pendingcnt [pri]; 1733 w_->pending = ++pendingcnt [pri];
1369 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1734 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1370 pendings [pri][w_->pending - 1].w = w_; 1735 pendings [pri][w_->pending - 1].w = w_;
1371 pendings [pri][w_->pending - 1].events = revents; 1736 pendings [pri][w_->pending - 1].events = revents;
1372 } 1737 }
1738
1739 pendingpri = NUMPRI - 1;
1373} 1740}
1374 1741
1375inline_speed void 1742inline_speed void
1376feed_reverse (EV_P_ W w) 1743feed_reverse (EV_P_ W w)
1377{ 1744{
… …
1423 if (expect_true (!anfd->reify)) 1790 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents); 1791 fd_event_nocheck (EV_A_ fd, revents);
1425} 1792}
1426 1793
1427void 1794void
1428ev_feed_fd_event (EV_P_ int fd, int revents) 1795ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1429{ 1796{
1430 if (fd >= 0 && fd < anfdmax) 1797 if (fd >= 0 && fd < anfdmax)
1431 fd_event_nocheck (EV_A_ fd, revents); 1798 fd_event_nocheck (EV_A_ fd, revents);
1432} 1799}
1433 1800
… …
1752static void noinline ecb_cold 2119static void noinline ecb_cold
1753evpipe_init (EV_P) 2120evpipe_init (EV_P)
1754{ 2121{
1755 if (!ev_is_active (&pipe_w)) 2122 if (!ev_is_active (&pipe_w))
1756 { 2123 {
2124 int fds [2];
2125
1757# if EV_USE_EVENTFD 2126# if EV_USE_EVENTFD
2127 fds [0] = -1;
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2128 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL) 2129 if (fds [1] < 0 && errno == EINVAL)
1760 evfd = eventfd (0, 0); 2130 fds [1] = eventfd (0, 0);
1761 2131
1762 if (evfd >= 0) 2132 if (fds [1] < 0)
2133# endif
1763 { 2134 {
2135 while (pipe (fds))
2136 ev_syserr ("(libev) error creating signal/async pipe");
2137
2138 fd_intern (fds [0]);
2139 }
2140
1764 evpipe [0] = -1; 2141 evpipe [0] = fds [0];
1765 fd_intern (evfd); /* doing it twice doesn't hurt */ 2142
1766 ev_io_set (&pipe_w, evfd, EV_READ); 2143 if (evpipe [1] < 0)
2144 evpipe [1] = fds [1]; /* first call, set write fd */
2145 else
2146 {
2147 /* on subsequent calls, do not change evpipe [1] */
2148 /* so that evpipe_write can always rely on its value. */
2149 /* this branch does not do anything sensible on windows, */
2150 /* so must not be executed on windows */
2151
2152 dup2 (fds [1], evpipe [1]);
2153 close (fds [1]);
2154 }
2155
2156 fd_intern (evpipe [1]);
2157
2158 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2159 ev_io_start (EV_A_ &pipe_w);
2160 ev_unref (EV_A); /* watcher should not keep loop alive */
2161 }
2162}
2163
2164inline_speed void
2165evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2166{
2167 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2168
2169 if (expect_true (*flag))
2170 return;
2171
2172 *flag = 1;
2173 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2174
2175 pipe_write_skipped = 1;
2176
2177 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2178
2179 if (pipe_write_wanted)
2180 {
2181 int old_errno;
2182
2183 pipe_write_skipped = 0;
2184 ECB_MEMORY_FENCE_RELEASE;
2185
2186 old_errno = errno; /* save errno because write will clobber it */
2187
2188#if EV_USE_EVENTFD
2189 if (evpipe [0] < 0)
2190 {
2191 uint64_t counter = 1;
2192 write (evpipe [1], &counter, sizeof (uint64_t));
1767 } 2193 }
1768 else 2194 else
1769# endif 2195#endif
1770 { 2196 {
1771 while (pipe (evpipe)) 2197#ifdef _WIN32
1772 ev_syserr ("(libev) error creating signal/async pipe"); 2198 WSABUF buf;
1773 2199 DWORD sent;
1774 fd_intern (evpipe [0]); 2200 buf.buf = &buf;
1775 fd_intern (evpipe [1]); 2201 buf.len = 1;
1776 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2202 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1777 } 2203#else
1778
1779 ev_io_start (EV_A_ &pipe_w);
1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1781 }
1782}
1783
1784inline_speed void
1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1786{
1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1804 old_errno = errno; /* save errno because write will clobber it */
1805
1806#if EV_USE_EVENTFD
1807 if (evfd >= 0)
1808 {
1809 uint64_t counter = 1;
1810 write (evfd, &counter, sizeof (uint64_t));
1811 }
1812 else
1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1820 write (evpipe [1], &(evpipe [1]), 1); 2204 write (evpipe [1], &(evpipe [1]), 1);
2205#endif
1821 } 2206 }
1822 2207
1823 errno = old_errno; 2208 errno = old_errno;
1824 } 2209 }
1825} 2210}
… …
1832 int i; 2217 int i;
1833 2218
1834 if (revents & EV_READ) 2219 if (revents & EV_READ)
1835 { 2220 {
1836#if EV_USE_EVENTFD 2221#if EV_USE_EVENTFD
1837 if (evfd >= 0) 2222 if (evpipe [0] < 0)
1838 { 2223 {
1839 uint64_t counter; 2224 uint64_t counter;
1840 read (evfd, &counter, sizeof (uint64_t)); 2225 read (evpipe [1], &counter, sizeof (uint64_t));
1841 } 2226 }
1842 else 2227 else
1843#endif 2228#endif
1844 { 2229 {
1845 char dummy; 2230 char dummy[4];
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2231#ifdef _WIN32
2232 WSABUF buf;
2233 DWORD recvd;
2234 DWORD flags = 0;
2235 buf.buf = dummy;
2236 buf.len = sizeof (dummy);
2237 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2238#else
1847 read (evpipe [0], &dummy, 1); 2239 read (evpipe [0], &dummy, sizeof (dummy));
2240#endif
1848 } 2241 }
1849 } 2242 }
1850 2243
1851 pipe_write_skipped = 0; 2244 pipe_write_skipped = 0;
2245
2246 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1852 2247
1853#if EV_SIGNAL_ENABLE 2248#if EV_SIGNAL_ENABLE
1854 if (sig_pending) 2249 if (sig_pending)
1855 { 2250 {
1856 sig_pending = 0; 2251 sig_pending = 0;
2252
2253 ECB_MEMORY_FENCE;
1857 2254
1858 for (i = EV_NSIG - 1; i--; ) 2255 for (i = EV_NSIG - 1; i--; )
1859 if (expect_false (signals [i].pending)) 2256 if (expect_false (signals [i].pending))
1860 ev_feed_signal_event (EV_A_ i + 1); 2257 ev_feed_signal_event (EV_A_ i + 1);
1861 } 2258 }
… …
1863 2260
1864#if EV_ASYNC_ENABLE 2261#if EV_ASYNC_ENABLE
1865 if (async_pending) 2262 if (async_pending)
1866 { 2263 {
1867 async_pending = 0; 2264 async_pending = 0;
2265
2266 ECB_MEMORY_FENCE;
1868 2267
1869 for (i = asynccnt; i--; ) 2268 for (i = asynccnt; i--; )
1870 if (asyncs [i]->sent) 2269 if (asyncs [i]->sent)
1871 { 2270 {
1872 asyncs [i]->sent = 0; 2271 asyncs [i]->sent = 0;
2272 ECB_MEMORY_FENCE_RELEASE;
1873 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2273 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1874 } 2274 }
1875 } 2275 }
1876#endif 2276#endif
1877} 2277}
1878 2278
1879/*****************************************************************************/ 2279/*****************************************************************************/
1880 2280
1881void 2281void
1882ev_feed_signal (int signum) 2282ev_feed_signal (int signum) EV_THROW
1883{ 2283{
1884#if EV_MULTIPLICITY 2284#if EV_MULTIPLICITY
2285 EV_P;
2286 ECB_MEMORY_FENCE_ACQUIRE;
1885 EV_P = signals [signum - 1].loop; 2287 EV_A = signals [signum - 1].loop;
1886 2288
1887 if (!EV_A) 2289 if (!EV_A)
1888 return; 2290 return;
1889#endif 2291#endif
1890 2292
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1; 2293 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending); 2294 evpipe_write (EV_A_ &sig_pending);
1896} 2295}
1897 2296
1898static void 2297static void
… …
1904 2303
1905 ev_feed_signal (signum); 2304 ev_feed_signal (signum);
1906} 2305}
1907 2306
1908void noinline 2307void noinline
1909ev_feed_signal_event (EV_P_ int signum) 2308ev_feed_signal_event (EV_P_ int signum) EV_THROW
1910{ 2309{
1911 WL w; 2310 WL w;
1912 2311
1913 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2312 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1914 return; 2313 return;
1915 2314
1916 --signum; 2315 --signum;
1917 2316
1918#if EV_MULTIPLICITY 2317#if EV_MULTIPLICITY
… …
1922 if (expect_false (signals [signum].loop != EV_A)) 2321 if (expect_false (signals [signum].loop != EV_A))
1923 return; 2322 return;
1924#endif 2323#endif
1925 2324
1926 signals [signum].pending = 0; 2325 signals [signum].pending = 0;
2326 ECB_MEMORY_FENCE_RELEASE;
1927 2327
1928 for (w = signals [signum].head; w; w = w->next) 2328 for (w = signals [signum].head; w; w = w->next)
1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2329 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1930} 2330}
1931 2331
… …
2030#if EV_USE_SELECT 2430#if EV_USE_SELECT
2031# include "ev_select.c" 2431# include "ev_select.c"
2032#endif 2432#endif
2033 2433
2034int ecb_cold 2434int ecb_cold
2035ev_version_major (void) 2435ev_version_major (void) EV_THROW
2036{ 2436{
2037 return EV_VERSION_MAJOR; 2437 return EV_VERSION_MAJOR;
2038} 2438}
2039 2439
2040int ecb_cold 2440int ecb_cold
2041ev_version_minor (void) 2441ev_version_minor (void) EV_THROW
2042{ 2442{
2043 return EV_VERSION_MINOR; 2443 return EV_VERSION_MINOR;
2044} 2444}
2045 2445
2046/* return true if we are running with elevated privileges and should ignore env variables */ 2446/* return true if we are running with elevated privileges and should ignore env variables */
… …
2054 || getgid () != getegid (); 2454 || getgid () != getegid ();
2055#endif 2455#endif
2056} 2456}
2057 2457
2058unsigned int ecb_cold 2458unsigned int ecb_cold
2059ev_supported_backends (void) 2459ev_supported_backends (void) EV_THROW
2060{ 2460{
2061 unsigned int flags = 0; 2461 unsigned int flags = 0;
2062 2462
2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2463 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2064 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2464 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2068 2468
2069 return flags; 2469 return flags;
2070} 2470}
2071 2471
2072unsigned int ecb_cold 2472unsigned int ecb_cold
2073ev_recommended_backends (void) 2473ev_recommended_backends (void) EV_THROW
2074{ 2474{
2075 unsigned int flags = ev_supported_backends (); 2475 unsigned int flags = ev_supported_backends ();
2076 2476
2077#ifndef __NetBSD__ 2477#ifndef __NetBSD__
2078 /* kqueue is borked on everything but netbsd apparently */ 2478 /* kqueue is borked on everything but netbsd apparently */
… …
2090 2490
2091 return flags; 2491 return flags;
2092} 2492}
2093 2493
2094unsigned int ecb_cold 2494unsigned int ecb_cold
2095ev_embeddable_backends (void) 2495ev_embeddable_backends (void) EV_THROW
2096{ 2496{
2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2497 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2098 2498
2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2499 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2500 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2102 2502
2103 return flags; 2503 return flags;
2104} 2504}
2105 2505
2106unsigned int 2506unsigned int
2107ev_backend (EV_P) 2507ev_backend (EV_P) EV_THROW
2108{ 2508{
2109 return backend; 2509 return backend;
2110} 2510}
2111 2511
2112#if EV_FEATURE_API 2512#if EV_FEATURE_API
2113unsigned int 2513unsigned int
2114ev_iteration (EV_P) 2514ev_iteration (EV_P) EV_THROW
2115{ 2515{
2116 return loop_count; 2516 return loop_count;
2117} 2517}
2118 2518
2119unsigned int 2519unsigned int
2120ev_depth (EV_P) 2520ev_depth (EV_P) EV_THROW
2121{ 2521{
2122 return loop_depth; 2522 return loop_depth;
2123} 2523}
2124 2524
2125void 2525void
2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2526ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2127{ 2527{
2128 io_blocktime = interval; 2528 io_blocktime = interval;
2129} 2529}
2130 2530
2131void 2531void
2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2532ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2133{ 2533{
2134 timeout_blocktime = interval; 2534 timeout_blocktime = interval;
2135} 2535}
2136 2536
2137void 2537void
2138ev_set_userdata (EV_P_ void *data) 2538ev_set_userdata (EV_P_ void *data) EV_THROW
2139{ 2539{
2140 userdata = data; 2540 userdata = data;
2141} 2541}
2142 2542
2143void * 2543void *
2144ev_userdata (EV_P) 2544ev_userdata (EV_P) EV_THROW
2145{ 2545{
2146 return userdata; 2546 return userdata;
2147} 2547}
2148 2548
2149void 2549void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2550ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2151{ 2551{
2152 invoke_cb = invoke_pending_cb; 2552 invoke_cb = invoke_pending_cb;
2153} 2553}
2154 2554
2155void 2555void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2556ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2157{ 2557{
2158 release_cb = release; 2558 release_cb = release;
2159 acquire_cb = acquire; 2559 acquire_cb = acquire;
2160} 2560}
2161#endif 2561#endif
2162 2562
2163/* initialise a loop structure, must be zero-initialised */ 2563/* initialise a loop structure, must be zero-initialised */
2164static void noinline ecb_cold 2564static void noinline ecb_cold
2165loop_init (EV_P_ unsigned int flags) 2565loop_init (EV_P_ unsigned int flags) EV_THROW
2166{ 2566{
2167 if (!backend) 2567 if (!backend)
2168 { 2568 {
2169 origflags = flags; 2569 origflags = flags;
2170 2570
… …
2215#if EV_ASYNC_ENABLE 2615#if EV_ASYNC_ENABLE
2216 async_pending = 0; 2616 async_pending = 0;
2217#endif 2617#endif
2218 pipe_write_skipped = 0; 2618 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0; 2619 pipe_write_wanted = 0;
2620 evpipe [0] = -1;
2621 evpipe [1] = -1;
2220#if EV_USE_INOTIFY 2622#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2623 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif 2624#endif
2223#if EV_USE_SIGNALFD 2625#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2626 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2275 EV_INVOKE_PENDING; 2677 EV_INVOKE_PENDING;
2276 } 2678 }
2277#endif 2679#endif
2278 2680
2279#if EV_CHILD_ENABLE 2681#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev)) 2682 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2281 { 2683 {
2282 ev_ref (EV_A); /* child watcher */ 2684 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev); 2685 ev_signal_stop (EV_A_ &childev);
2284 } 2686 }
2285#endif 2687#endif
… …
2287 if (ev_is_active (&pipe_w)) 2689 if (ev_is_active (&pipe_w))
2288 { 2690 {
2289 /*ev_ref (EV_A);*/ 2691 /*ev_ref (EV_A);*/
2290 /*ev_io_stop (EV_A_ &pipe_w);*/ 2692 /*ev_io_stop (EV_A_ &pipe_w);*/
2291 2693
2292#if EV_USE_EVENTFD
2293 if (evfd >= 0)
2294 close (evfd);
2295#endif
2296
2297 if (evpipe [0] >= 0)
2298 {
2299 EV_WIN32_CLOSE_FD (evpipe [0]); 2694 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2300 EV_WIN32_CLOSE_FD (evpipe [1]); 2695 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2301 }
2302 } 2696 }
2303 2697
2304#if EV_USE_SIGNALFD 2698#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w)) 2699 if (ev_is_active (&sigfd_w))
2306 close (sigfd); 2700 close (sigfd);
… …
2392#endif 2786#endif
2393#if EV_USE_INOTIFY 2787#if EV_USE_INOTIFY
2394 infy_fork (EV_A); 2788 infy_fork (EV_A);
2395#endif 2789#endif
2396 2790
2791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 if (ev_is_active (&pipe_w)) 2792 if (ev_is_active (&pipe_w))
2398 { 2793 {
2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2794 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2400 2795
2401 ev_ref (EV_A); 2796 ev_ref (EV_A);
2402 ev_io_stop (EV_A_ &pipe_w); 2797 ev_io_stop (EV_A_ &pipe_w);
2403 2798
2404#if EV_USE_EVENTFD
2405 if (evfd >= 0)
2406 close (evfd);
2407#endif
2408
2409 if (evpipe [0] >= 0) 2799 if (evpipe [0] >= 0)
2410 {
2411 EV_WIN32_CLOSE_FD (evpipe [0]); 2800 EV_WIN32_CLOSE_FD (evpipe [0]);
2412 EV_WIN32_CLOSE_FD (evpipe [1]);
2413 }
2414 2801
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2416 evpipe_init (EV_A); 2802 evpipe_init (EV_A);
2417 /* now iterate over everything, in case we missed something */ 2803 /* iterate over everything, in case we missed something before */
2418 pipecb (EV_A_ &pipe_w, EV_READ); 2804 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2419#endif
2420 } 2805 }
2806#endif
2421 2807
2422 postfork = 0; 2808 postfork = 0;
2423} 2809}
2424 2810
2425#if EV_MULTIPLICITY 2811#if EV_MULTIPLICITY
2426 2812
2427struct ev_loop * ecb_cold 2813struct ev_loop * ecb_cold
2428ev_loop_new (unsigned int flags) 2814ev_loop_new (unsigned int flags) EV_THROW
2429{ 2815{
2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2431 2817
2432 memset (EV_A, 0, sizeof (struct ev_loop)); 2818 memset (EV_A, 0, sizeof (struct ev_loop));
2433 loop_init (EV_A_ flags); 2819 loop_init (EV_A_ flags);
… …
2477} 2863}
2478#endif 2864#endif
2479 2865
2480#if EV_FEATURE_API 2866#if EV_FEATURE_API
2481void ecb_cold 2867void ecb_cold
2482ev_verify (EV_P) 2868ev_verify (EV_P) EV_THROW
2483{ 2869{
2484#if EV_VERIFY 2870#if EV_VERIFY
2485 int i; 2871 int i;
2486 WL w; 2872 WL w, w2;
2487 2873
2488 assert (activecnt >= -1); 2874 assert (activecnt >= -1);
2489 2875
2490 assert (fdchangemax >= fdchangecnt); 2876 assert (fdchangemax >= fdchangecnt);
2491 for (i = 0; i < fdchangecnt; ++i) 2877 for (i = 0; i < fdchangecnt; ++i)
2492 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2878 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2493 2879
2494 assert (anfdmax >= 0); 2880 assert (anfdmax >= 0);
2495 for (i = 0; i < anfdmax; ++i) 2881 for (i = 0; i < anfdmax; ++i)
2882 {
2883 int j = 0;
2884
2496 for (w = anfds [i].head; w; w = w->next) 2885 for (w = w2 = anfds [i].head; w; w = w->next)
2497 { 2886 {
2498 verify_watcher (EV_A_ (W)w); 2887 verify_watcher (EV_A_ (W)w);
2888
2889 if (j++ & 1)
2890 {
2891 assert (("libev: io watcher list contains a loop", w != w2));
2892 w2 = w2->next;
2893 }
2894
2499 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2895 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2500 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2896 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2501 } 2897 }
2898 }
2502 2899
2503 assert (timermax >= timercnt); 2900 assert (timermax >= timercnt);
2504 verify_heap (EV_A_ timers, timercnt); 2901 verify_heap (EV_A_ timers, timercnt);
2505 2902
2506#if EV_PERIODIC_ENABLE 2903#if EV_PERIODIC_ENABLE
… …
2556#if EV_MULTIPLICITY 2953#if EV_MULTIPLICITY
2557struct ev_loop * ecb_cold 2954struct ev_loop * ecb_cold
2558#else 2955#else
2559int 2956int
2560#endif 2957#endif
2561ev_default_loop (unsigned int flags) 2958ev_default_loop (unsigned int flags) EV_THROW
2562{ 2959{
2563 if (!ev_default_loop_ptr) 2960 if (!ev_default_loop_ptr)
2564 { 2961 {
2565#if EV_MULTIPLICITY 2962#if EV_MULTIPLICITY
2566 EV_P = ev_default_loop_ptr = &default_loop_struct; 2963 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2585 2982
2586 return ev_default_loop_ptr; 2983 return ev_default_loop_ptr;
2587} 2984}
2588 2985
2589void 2986void
2590ev_loop_fork (EV_P) 2987ev_loop_fork (EV_P) EV_THROW
2591{ 2988{
2592 postfork = 1; /* must be in line with ev_default_fork */ 2989 postfork = 1;
2593} 2990}
2594 2991
2595/*****************************************************************************/ 2992/*****************************************************************************/
2596 2993
2597void 2994void
… …
2599{ 2996{
2600 EV_CB_INVOKE ((W)w, revents); 2997 EV_CB_INVOKE ((W)w, revents);
2601} 2998}
2602 2999
2603unsigned int 3000unsigned int
2604ev_pending_count (EV_P) 3001ev_pending_count (EV_P) EV_THROW
2605{ 3002{
2606 int pri; 3003 int pri;
2607 unsigned int count = 0; 3004 unsigned int count = 0;
2608 3005
2609 for (pri = NUMPRI; pri--; ) 3006 for (pri = NUMPRI; pri--; )
… …
2613} 3010}
2614 3011
2615void noinline 3012void noinline
2616ev_invoke_pending (EV_P) 3013ev_invoke_pending (EV_P)
2617{ 3014{
2618 int pri; 3015 pendingpri = NUMPRI;
2619 3016
2620 for (pri = NUMPRI; pri--; ) 3017 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3018 {
3019 --pendingpri;
3020
2621 while (pendingcnt [pri]) 3021 while (pendingcnt [pendingpri])
2622 { 3022 {
2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3023 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2624 3024
2625 p->w->pending = 0; 3025 p->w->pending = 0;
2626 EV_CB_INVOKE (p->w, p->events); 3026 EV_CB_INVOKE (p->w, p->events);
2627 EV_FREQUENT_CHECK; 3027 EV_FREQUENT_CHECK;
2628 } 3028 }
3029 }
2629} 3030}
2630 3031
2631#if EV_IDLE_ENABLE 3032#if EV_IDLE_ENABLE
2632/* make idle watchers pending. this handles the "call-idle */ 3033/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */ 3034/* only when higher priorities are idle" logic */
… …
2723{ 3124{
2724 EV_FREQUENT_CHECK; 3125 EV_FREQUENT_CHECK;
2725 3126
2726 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3127 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2727 { 3128 {
2728 int feed_count = 0;
2729
2730 do 3129 do
2731 { 3130 {
2732 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2733 3132
2734 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2868 3267
2869 mn_now = ev_rt_now; 3268 mn_now = ev_rt_now;
2870 } 3269 }
2871} 3270}
2872 3271
2873void 3272int
2874ev_run (EV_P_ int flags) 3273ev_run (EV_P_ int flags)
2875{ 3274{
2876#if EV_FEATURE_API 3275#if EV_FEATURE_API
2877 ++loop_depth; 3276 ++loop_depth;
2878#endif 3277#endif
… …
2991#endif 3390#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2993 backend_poll (EV_A_ waittime); 3392 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995 3394
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3395 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2997 3396
3397 ECB_MEMORY_FENCE_ACQUIRE;
2998 if (pipe_write_skipped) 3398 if (pipe_write_skipped)
2999 { 3399 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3400 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3401 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 } 3402 }
… …
3035 loop_done = EVBREAK_CANCEL; 3435 loop_done = EVBREAK_CANCEL;
3036 3436
3037#if EV_FEATURE_API 3437#if EV_FEATURE_API
3038 --loop_depth; 3438 --loop_depth;
3039#endif 3439#endif
3440
3441 return activecnt;
3040} 3442}
3041 3443
3042void 3444void
3043ev_break (EV_P_ int how) 3445ev_break (EV_P_ int how) EV_THROW
3044{ 3446{
3045 loop_done = how; 3447 loop_done = how;
3046} 3448}
3047 3449
3048void 3450void
3049ev_ref (EV_P) 3451ev_ref (EV_P) EV_THROW
3050{ 3452{
3051 ++activecnt; 3453 ++activecnt;
3052} 3454}
3053 3455
3054void 3456void
3055ev_unref (EV_P) 3457ev_unref (EV_P) EV_THROW
3056{ 3458{
3057 --activecnt; 3459 --activecnt;
3058} 3460}
3059 3461
3060void 3462void
3061ev_now_update (EV_P) 3463ev_now_update (EV_P) EV_THROW
3062{ 3464{
3063 time_update (EV_A_ 1e100); 3465 time_update (EV_A_ 1e100);
3064} 3466}
3065 3467
3066void 3468void
3067ev_suspend (EV_P) 3469ev_suspend (EV_P) EV_THROW
3068{ 3470{
3069 ev_now_update (EV_A); 3471 ev_now_update (EV_A);
3070} 3472}
3071 3473
3072void 3474void
3073ev_resume (EV_P) 3475ev_resume (EV_P) EV_THROW
3074{ 3476{
3075 ev_tstamp mn_prev = mn_now; 3477 ev_tstamp mn_prev = mn_now;
3076 3478
3077 ev_now_update (EV_A); 3479 ev_now_update (EV_A);
3078 timers_reschedule (EV_A_ mn_now - mn_prev); 3480 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3117 w->pending = 0; 3519 w->pending = 0;
3118 } 3520 }
3119} 3521}
3120 3522
3121int 3523int
3122ev_clear_pending (EV_P_ void *w) 3524ev_clear_pending (EV_P_ void *w) EV_THROW
3123{ 3525{
3124 W w_ = (W)w; 3526 W w_ = (W)w;
3125 int pending = w_->pending; 3527 int pending = w_->pending;
3126 3528
3127 if (expect_true (pending)) 3529 if (expect_true (pending))
… …
3160} 3562}
3161 3563
3162/*****************************************************************************/ 3564/*****************************************************************************/
3163 3565
3164void noinline 3566void noinline
3165ev_io_start (EV_P_ ev_io *w) 3567ev_io_start (EV_P_ ev_io *w) EV_THROW
3166{ 3568{
3167 int fd = w->fd; 3569 int fd = w->fd;
3168 3570
3169 if (expect_false (ev_is_active (w))) 3571 if (expect_false (ev_is_active (w)))
3170 return; 3572 return;
… …
3176 3578
3177 ev_start (EV_A_ (W)w, 1); 3579 ev_start (EV_A_ (W)w, 1);
3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3580 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3179 wlist_add (&anfds[fd].head, (WL)w); 3581 wlist_add (&anfds[fd].head, (WL)w);
3180 3582
3583 /* common bug, apparently */
3584 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3585
3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3586 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3182 w->events &= ~EV__IOFDSET; 3587 w->events &= ~EV__IOFDSET;
3183 3588
3184 EV_FREQUENT_CHECK; 3589 EV_FREQUENT_CHECK;
3185} 3590}
3186 3591
3187void noinline 3592void noinline
3188ev_io_stop (EV_P_ ev_io *w) 3593ev_io_stop (EV_P_ ev_io *w) EV_THROW
3189{ 3594{
3190 clear_pending (EV_A_ (W)w); 3595 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3596 if (expect_false (!ev_is_active (w)))
3192 return; 3597 return;
3193 3598
… …
3202 3607
3203 EV_FREQUENT_CHECK; 3608 EV_FREQUENT_CHECK;
3204} 3609}
3205 3610
3206void noinline 3611void noinline
3207ev_timer_start (EV_P_ ev_timer *w) 3612ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3208{ 3613{
3209 if (expect_false (ev_is_active (w))) 3614 if (expect_false (ev_is_active (w)))
3210 return; 3615 return;
3211 3616
3212 ev_at (w) += mn_now; 3617 ev_at (w) += mn_now;
… …
3226 3631
3227 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3632 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3228} 3633}
3229 3634
3230void noinline 3635void noinline
3231ev_timer_stop (EV_P_ ev_timer *w) 3636ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3232{ 3637{
3233 clear_pending (EV_A_ (W)w); 3638 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 3639 if (expect_false (!ev_is_active (w)))
3235 return; 3640 return;
3236 3641
… …
3256 3661
3257 EV_FREQUENT_CHECK; 3662 EV_FREQUENT_CHECK;
3258} 3663}
3259 3664
3260void noinline 3665void noinline
3261ev_timer_again (EV_P_ ev_timer *w) 3666ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3262{ 3667{
3263 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
3669
3670 clear_pending (EV_A_ (W)w);
3264 3671
3265 if (ev_is_active (w)) 3672 if (ev_is_active (w))
3266 { 3673 {
3267 if (w->repeat) 3674 if (w->repeat)
3268 { 3675 {
… …
3281 3688
3282 EV_FREQUENT_CHECK; 3689 EV_FREQUENT_CHECK;
3283} 3690}
3284 3691
3285ev_tstamp 3692ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w) 3693ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3287{ 3694{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3695 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289} 3696}
3290 3697
3291#if EV_PERIODIC_ENABLE 3698#if EV_PERIODIC_ENABLE
3292void noinline 3699void noinline
3293ev_periodic_start (EV_P_ ev_periodic *w) 3700ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3294{ 3701{
3295 if (expect_false (ev_is_active (w))) 3702 if (expect_false (ev_is_active (w)))
3296 return; 3703 return;
3297 3704
3298 if (w->reschedule_cb) 3705 if (w->reschedule_cb)
… …
3318 3725
3319 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3726 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3320} 3727}
3321 3728
3322void noinline 3729void noinline
3323ev_periodic_stop (EV_P_ ev_periodic *w) 3730ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3324{ 3731{
3325 clear_pending (EV_A_ (W)w); 3732 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 3733 if (expect_false (!ev_is_active (w)))
3327 return; 3734 return;
3328 3735
… …
3346 3753
3347 EV_FREQUENT_CHECK; 3754 EV_FREQUENT_CHECK;
3348} 3755}
3349 3756
3350void noinline 3757void noinline
3351ev_periodic_again (EV_P_ ev_periodic *w) 3758ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3352{ 3759{
3353 /* TODO: use adjustheap and recalculation */ 3760 /* TODO: use adjustheap and recalculation */
3354 ev_periodic_stop (EV_A_ w); 3761 ev_periodic_stop (EV_A_ w);
3355 ev_periodic_start (EV_A_ w); 3762 ev_periodic_start (EV_A_ w);
3356} 3763}
… …
3361#endif 3768#endif
3362 3769
3363#if EV_SIGNAL_ENABLE 3770#if EV_SIGNAL_ENABLE
3364 3771
3365void noinline 3772void noinline
3366ev_signal_start (EV_P_ ev_signal *w) 3773ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3367{ 3774{
3368 if (expect_false (ev_is_active (w))) 3775 if (expect_false (ev_is_active (w)))
3369 return; 3776 return;
3370 3777
3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3778 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3373#if EV_MULTIPLICITY 3780#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops", 3781 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3782 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3376 3783
3377 signals [w->signum - 1].loop = EV_A; 3784 signals [w->signum - 1].loop = EV_A;
3785 ECB_MEMORY_FENCE_RELEASE;
3378#endif 3786#endif
3379 3787
3380 EV_FREQUENT_CHECK; 3788 EV_FREQUENT_CHECK;
3381 3789
3382#if EV_USE_SIGNALFD 3790#if EV_USE_SIGNALFD
… …
3442 3850
3443 EV_FREQUENT_CHECK; 3851 EV_FREQUENT_CHECK;
3444} 3852}
3445 3853
3446void noinline 3854void noinline
3447ev_signal_stop (EV_P_ ev_signal *w) 3855ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3448{ 3856{
3449 clear_pending (EV_A_ (W)w); 3857 clear_pending (EV_A_ (W)w);
3450 if (expect_false (!ev_is_active (w))) 3858 if (expect_false (!ev_is_active (w)))
3451 return; 3859 return;
3452 3860
… …
3483#endif 3891#endif
3484 3892
3485#if EV_CHILD_ENABLE 3893#if EV_CHILD_ENABLE
3486 3894
3487void 3895void
3488ev_child_start (EV_P_ ev_child *w) 3896ev_child_start (EV_P_ ev_child *w) EV_THROW
3489{ 3897{
3490#if EV_MULTIPLICITY 3898#if EV_MULTIPLICITY
3491 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3899 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3492#endif 3900#endif
3493 if (expect_false (ev_is_active (w))) 3901 if (expect_false (ev_is_active (w)))
… …
3500 3908
3501 EV_FREQUENT_CHECK; 3909 EV_FREQUENT_CHECK;
3502} 3910}
3503 3911
3504void 3912void
3505ev_child_stop (EV_P_ ev_child *w) 3913ev_child_stop (EV_P_ ev_child *w) EV_THROW
3506{ 3914{
3507 clear_pending (EV_A_ (W)w); 3915 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 3916 if (expect_false (!ev_is_active (w)))
3509 return; 3917 return;
3510 3918
… …
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3945# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3538 3946
3539static void noinline 3947static void noinline
3540infy_add (EV_P_ ev_stat *w) 3948infy_add (EV_P_ ev_stat *w)
3541{ 3949{
3542 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3950 w->wd = inotify_add_watch (fs_fd, w->path,
3951 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3952 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3953 | IN_DONT_FOLLOW | IN_MASK_ADD);
3543 3954
3544 if (w->wd >= 0) 3955 if (w->wd >= 0)
3545 { 3956 {
3546 struct statfs sfs; 3957 struct statfs sfs;
3547 3958
… …
3551 3962
3552 if (!fs_2625) 3963 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3964 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs) 3965 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */ 3966 && (sfs.f_type == 0x1373 /* devfs */
3967 || sfs.f_type == 0x4006 /* fat */
3968 || sfs.f_type == 0x4d44 /* msdos */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */ 3969 || sfs.f_type == 0xEF53 /* ext2/3 */
3970 || sfs.f_type == 0x72b6 /* jffs2 */
3971 || sfs.f_type == 0x858458f6 /* ramfs */
3972 || sfs.f_type == 0x5346544e /* ntfs */
3557 || sfs.f_type == 0x3153464a /* jfs */ 3973 || sfs.f_type == 0x3153464a /* jfs */
3974 || sfs.f_type == 0x9123683e /* btrfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */ 3975 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */ 3976 || sfs.f_type == 0x01021994 /* tmpfs */
3560 || sfs.f_type == 0x58465342 /* xfs */)) 3977 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3978 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else 3979 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3980 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3564 } 3981 }
… …
3677} 4094}
3678 4095
3679inline_size int 4096inline_size int
3680infy_newfd (void) 4097infy_newfd (void)
3681{ 4098{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4099#if defined IN_CLOEXEC && defined IN_NONBLOCK
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4100 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0) 4101 if (fd >= 0)
3685 return fd; 4102 return fd;
3686#endif 4103#endif
3687 return inotify_init (); 4104 return inotify_init ();
… …
3762#else 4179#else
3763# define EV_LSTAT(p,b) lstat (p, b) 4180# define EV_LSTAT(p,b) lstat (p, b)
3764#endif 4181#endif
3765 4182
3766void 4183void
3767ev_stat_stat (EV_P_ ev_stat *w) 4184ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3768{ 4185{
3769 if (lstat (w->path, &w->attr) < 0) 4186 if (lstat (w->path, &w->attr) < 0)
3770 w->attr.st_nlink = 0; 4187 w->attr.st_nlink = 0;
3771 else if (!w->attr.st_nlink) 4188 else if (!w->attr.st_nlink)
3772 w->attr.st_nlink = 1; 4189 w->attr.st_nlink = 1;
… …
3811 ev_feed_event (EV_A_ w, EV_STAT); 4228 ev_feed_event (EV_A_ w, EV_STAT);
3812 } 4229 }
3813} 4230}
3814 4231
3815void 4232void
3816ev_stat_start (EV_P_ ev_stat *w) 4233ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3817{ 4234{
3818 if (expect_false (ev_is_active (w))) 4235 if (expect_false (ev_is_active (w)))
3819 return; 4236 return;
3820 4237
3821 ev_stat_stat (EV_A_ w); 4238 ev_stat_stat (EV_A_ w);
… …
3842 4259
3843 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
3844} 4261}
3845 4262
3846void 4263void
3847ev_stat_stop (EV_P_ ev_stat *w) 4264ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3848{ 4265{
3849 clear_pending (EV_A_ (W)w); 4266 clear_pending (EV_A_ (W)w);
3850 if (expect_false (!ev_is_active (w))) 4267 if (expect_false (!ev_is_active (w)))
3851 return; 4268 return;
3852 4269
… …
3868} 4285}
3869#endif 4286#endif
3870 4287
3871#if EV_IDLE_ENABLE 4288#if EV_IDLE_ENABLE
3872void 4289void
3873ev_idle_start (EV_P_ ev_idle *w) 4290ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3874{ 4291{
3875 if (expect_false (ev_is_active (w))) 4292 if (expect_false (ev_is_active (w)))
3876 return; 4293 return;
3877 4294
3878 pri_adjust (EV_A_ (W)w); 4295 pri_adjust (EV_A_ (W)w);
… …
3891 4308
3892 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
3893} 4310}
3894 4311
3895void 4312void
3896ev_idle_stop (EV_P_ ev_idle *w) 4313ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3897{ 4314{
3898 clear_pending (EV_A_ (W)w); 4315 clear_pending (EV_A_ (W)w);
3899 if (expect_false (!ev_is_active (w))) 4316 if (expect_false (!ev_is_active (w)))
3900 return; 4317 return;
3901 4318
… …
3915} 4332}
3916#endif 4333#endif
3917 4334
3918#if EV_PREPARE_ENABLE 4335#if EV_PREPARE_ENABLE
3919void 4336void
3920ev_prepare_start (EV_P_ ev_prepare *w) 4337ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3921{ 4338{
3922 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
3923 return; 4340 return;
3924 4341
3925 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
… …
3930 4347
3931 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3932} 4349}
3933 4350
3934void 4351void
3935ev_prepare_stop (EV_P_ ev_prepare *w) 4352ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3936{ 4353{
3937 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3939 return; 4356 return;
3940 4357
… …
3953} 4370}
3954#endif 4371#endif
3955 4372
3956#if EV_CHECK_ENABLE 4373#if EV_CHECK_ENABLE
3957void 4374void
3958ev_check_start (EV_P_ ev_check *w) 4375ev_check_start (EV_P_ ev_check *w) EV_THROW
3959{ 4376{
3960 if (expect_false (ev_is_active (w))) 4377 if (expect_false (ev_is_active (w)))
3961 return; 4378 return;
3962 4379
3963 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
… …
3968 4385
3969 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3970} 4387}
3971 4388
3972void 4389void
3973ev_check_stop (EV_P_ ev_check *w) 4390ev_check_stop (EV_P_ ev_check *w) EV_THROW
3974{ 4391{
3975 clear_pending (EV_A_ (W)w); 4392 clear_pending (EV_A_ (W)w);
3976 if (expect_false (!ev_is_active (w))) 4393 if (expect_false (!ev_is_active (w)))
3977 return; 4394 return;
3978 4395
… …
3991} 4408}
3992#endif 4409#endif
3993 4410
3994#if EV_EMBED_ENABLE 4411#if EV_EMBED_ENABLE
3995void noinline 4412void noinline
3996ev_embed_sweep (EV_P_ ev_embed *w) 4413ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3997{ 4414{
3998 ev_run (w->other, EVRUN_NOWAIT); 4415 ev_run (w->other, EVRUN_NOWAIT);
3999} 4416}
4000 4417
4001static void 4418static void
… …
4049 ev_idle_stop (EV_A_ idle); 4466 ev_idle_stop (EV_A_ idle);
4050} 4467}
4051#endif 4468#endif
4052 4469
4053void 4470void
4054ev_embed_start (EV_P_ ev_embed *w) 4471ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4055{ 4472{
4056 if (expect_false (ev_is_active (w))) 4473 if (expect_false (ev_is_active (w)))
4057 return; 4474 return;
4058 4475
4059 { 4476 {
… …
4080 4497
4081 EV_FREQUENT_CHECK; 4498 EV_FREQUENT_CHECK;
4082} 4499}
4083 4500
4084void 4501void
4085ev_embed_stop (EV_P_ ev_embed *w) 4502ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4086{ 4503{
4087 clear_pending (EV_A_ (W)w); 4504 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4505 if (expect_false (!ev_is_active (w)))
4089 return; 4506 return;
4090 4507
… …
4100} 4517}
4101#endif 4518#endif
4102 4519
4103#if EV_FORK_ENABLE 4520#if EV_FORK_ENABLE
4104void 4521void
4105ev_fork_start (EV_P_ ev_fork *w) 4522ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4106{ 4523{
4107 if (expect_false (ev_is_active (w))) 4524 if (expect_false (ev_is_active (w)))
4108 return; 4525 return;
4109 4526
4110 EV_FREQUENT_CHECK; 4527 EV_FREQUENT_CHECK;
… …
4115 4532
4116 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
4117} 4534}
4118 4535
4119void 4536void
4120ev_fork_stop (EV_P_ ev_fork *w) 4537ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4121{ 4538{
4122 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
4123 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
4124 return; 4541 return;
4125 4542
… …
4138} 4555}
4139#endif 4556#endif
4140 4557
4141#if EV_CLEANUP_ENABLE 4558#if EV_CLEANUP_ENABLE
4142void 4559void
4143ev_cleanup_start (EV_P_ ev_cleanup *w) 4560ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4144{ 4561{
4145 if (expect_false (ev_is_active (w))) 4562 if (expect_false (ev_is_active (w)))
4146 return; 4563 return;
4147 4564
4148 EV_FREQUENT_CHECK; 4565 EV_FREQUENT_CHECK;
… …
4155 ev_unref (EV_A); 4572 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK; 4573 EV_FREQUENT_CHECK;
4157} 4574}
4158 4575
4159void 4576void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w) 4577ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4161{ 4578{
4162 clear_pending (EV_A_ (W)w); 4579 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4580 if (expect_false (!ev_is_active (w)))
4164 return; 4581 return;
4165 4582
… …
4179} 4596}
4180#endif 4597#endif
4181 4598
4182#if EV_ASYNC_ENABLE 4599#if EV_ASYNC_ENABLE
4183void 4600void
4184ev_async_start (EV_P_ ev_async *w) 4601ev_async_start (EV_P_ ev_async *w) EV_THROW
4185{ 4602{
4186 if (expect_false (ev_is_active (w))) 4603 if (expect_false (ev_is_active (w)))
4187 return; 4604 return;
4188 4605
4189 w->sent = 0; 4606 w->sent = 0;
… …
4198 4615
4199 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
4200} 4617}
4201 4618
4202void 4619void
4203ev_async_stop (EV_P_ ev_async *w) 4620ev_async_stop (EV_P_ ev_async *w) EV_THROW
4204{ 4621{
4205 clear_pending (EV_A_ (W)w); 4622 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 4623 if (expect_false (!ev_is_active (w)))
4207 return; 4624 return;
4208 4625
… …
4219 4636
4220 EV_FREQUENT_CHECK; 4637 EV_FREQUENT_CHECK;
4221} 4638}
4222 4639
4223void 4640void
4224ev_async_send (EV_P_ ev_async *w) 4641ev_async_send (EV_P_ ev_async *w) EV_THROW
4225{ 4642{
4226 w->sent = 1; 4643 w->sent = 1;
4227 evpipe_write (EV_A_ &async_pending); 4644 evpipe_write (EV_A_ &async_pending);
4228} 4645}
4229#endif 4646#endif
… …
4266 4683
4267 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4684 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4268} 4685}
4269 4686
4270void 4687void
4271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4688ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4272{ 4689{
4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4690 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4274 4691
4275 if (expect_false (!once)) 4692 if (expect_false (!once))
4276 { 4693 {
… …
4298 4715
4299/*****************************************************************************/ 4716/*****************************************************************************/
4300 4717
4301#if EV_WALK_ENABLE 4718#if EV_WALK_ENABLE
4302void ecb_cold 4719void ecb_cold
4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4720ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4304{ 4721{
4305 int i, j; 4722 int i, j;
4306 ev_watcher_list *wl, *wn; 4723 ev_watcher_list *wl, *wn;
4307 4724
4308 if (types & (EV_IO | EV_EMBED)) 4725 if (types & (EV_IO | EV_EMBED))

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