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Comparing libev/ev.c (file contents):
Revision 1.392 by root, Thu Aug 4 14:37:49 2011 UTC vs.
Revision 1.469 by root, Fri Sep 5 16:21:19 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 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
183# include EV_H 183# include EV_H
184#else 184#else
185# include "ev.h" 185# include "ev.h"
186#endif 186#endif
187 187
188EV_CPP(extern "C" {) 188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
189 198
190#ifndef _WIN32 199#ifndef _WIN32
191# include <sys/time.h> 200# include <sys/time.h>
192# include <sys/wait.h> 201# include <sys/wait.h>
193# include <unistd.h> 202# include <unistd.h>
194#else 203#else
195# include <io.h> 204# include <io.h>
196# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
197# include <windows.h> 207# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
200# endif 210# endif
201# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
210#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
211 221
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
213 223
214/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 225#if defined EV_NSIG
216/* use what's provided */ 226/* use what's provided */
217#elif defined (NSIG) 227#elif defined NSIG
218# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 229#elif defined _NSIG
220# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 231#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 233#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 237#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 239#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 243#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 245#else
236# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 247#endif
241 248
242#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
244#endif 251#endif
245 252
246#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 256# else
250# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
251# endif 258# endif
252#endif 259#endif
253 260
254#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 264# else
258# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
259# endif 266# endif
260#endif 267#endif
… …
347 354
348#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 357#endif
351 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 378# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
360# else 383# else
… …
363# endif 386# endif
364#endif 387#endif
365 388
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 390
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
377#endif 394#endif
378 395
… …
386# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
387#endif 404#endif
388 405
389#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 408# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 409# include <sys/select.h>
393# endif 410# endif
394#endif 411#endif
395 412
396#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
403# endif 420# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 421#endif
409 422
410#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 425# include <stdint.h>
… …
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 483/* ECB.H BEGIN */
471/* 484/*
472 * libecb - http://software.schmorp.de/pkg/libecb 485 * libecb - http://software.schmorp.de/pkg/libecb
473 * 486 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 488 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 489 * All rights reserved.
477 * 490 *
478 * Redistribution and use in source and binary forms, with or without modifica- 491 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 492 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 *
512 * Alternatively, the contents of this file may be used under the terms of
513 * the GNU General Public License ("GPL") version 2 or any later version,
514 * in which case the provisions of the GPL are applicable instead of
515 * the above. If you wish to allow the use of your version of this file
516 * only under the terms of the GPL and not to allow others to use your
517 * version of this file under the BSD license, indicate your decision
518 * by deleting the provisions above and replace them with the notice
519 * and other provisions required by the GPL. If you do not delete the
520 * provisions above, a recipient may use your version of this file under
521 * either the BSD or the GPL.
498 */ 522 */
499 523
500#ifndef ECB_H 524#ifndef ECB_H
501#define ECB_H 525#define ECB_H
526
527/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003
502 529
503#ifdef _WIN32 530#ifdef _WIN32
504 typedef signed char int8_t; 531 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 532 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 533 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 539 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 540 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 541 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 542 typedef unsigned __int64 uint64_t;
516 #endif 543 #endif
544 #ifdef _WIN64
545 #define ECB_PTRSIZE 8
546 typedef uint64_t uintptr_t;
547 typedef int64_t intptr_t;
548 #else
549 #define ECB_PTRSIZE 4
550 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t;
552 #endif
517#else 553#else
518 #include <inttypes.h> 554 #include <inttypes.h>
555 #if UINTMAX_MAX > 0xffffffffU
556 #define ECB_PTRSIZE 8
557 #else
558 #define ECB_PTRSIZE 4
559 #endif
560#endif
561
562/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
564 #if _ILP32
565 #define ECB_AMD64_X32 1
566 #else
567 #define ECB_AMD64 1
568 #endif
519#endif 569#endif
520 570
521/* many compilers define _GNUC_ to some versions but then only implement 571/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 572 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 573 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 574 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 575 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 576 * an issue with that they should have done it right in the first place.
527 */ 577 */
528#ifndef ECB_GCC_VERSION 578#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 579 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 580 #define ECB_GCC_VERSION(major,minor) 0
531 #else 581 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 582 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 583 #endif
534#endif 584#endif
535 585
586#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L)
588
589#if ECB_CPP
590 #define ECB_C 0
591 #define ECB_STDC_VERSION 0
592#else
593 #define ECB_C 1
594 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif
596
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
599
600#if ECB_CPP
601 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END }
604#else
605 #define ECB_EXTERN_C extern
606 #define ECB_EXTERN_C_BEG
607 #define ECB_EXTERN_C_END
608#endif
609
536/*****************************************************************************/ 610/*****************************************************************************/
537 611
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 612/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 613/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 614
541#if ECB_NO_THREADS || ECB_NO_SMP 615#if ECB_NO_THREADS
616 #define ECB_NO_SMP 1
617#endif
618
619#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 620 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
545#endif 621#endif
546 622
547#ifndef ECB_MEMORY_FENCE 623#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 624 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 625 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __amd64 629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
557 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
559 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
560 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \ 636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
561 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
562 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
563 #define ECB_MEMORY_FENCE \ 640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
564 do { \ 641 #elif __aarch64__
565 int null = 0; \ 642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
566 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \ 643 #elif (__sparc || __sparc__) && !__sparcv8
567 while (0) 644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
649 #elif defined __mips__
650 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
651 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
653 #elif defined __alpha__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
655 #elif defined __hppa__
656 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif defined __ia64__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
660 #elif defined __m68k__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
662 #elif defined __m88k__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
664 #elif defined __sh__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
568 #endif 666 #endif
569 #endif 667 #endif
570#endif 668#endif
571 669
572#ifndef ECB_MEMORY_FENCE 670#ifndef ECB_MEMORY_FENCE
671 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model.
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687
573 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
574 #define ECB_MEMORY_FENCE __sync_synchronize () 689 #define ECB_MEMORY_FENCE __sync_synchronize ()
575 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 690 #elif _MSC_VER >= 1500 /* VC++ 2008 */
576 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
692 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
693 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
694 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
695 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
577 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 696 #elif _MSC_VER >= 1400 /* VC++ 2005 */
578 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 697 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
579 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 698 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
580 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 699 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
581 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 700 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
582 #elif defined(_WIN32) 701 #elif defined _WIN32
583 #include <WinNT.h> 702 #include <WinNT.h>
584 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
705 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
708 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
709 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync ()
711 #endif
712#endif
713
714#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* we assume that these memory fences work on all variables/all memory accesses, */
717 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
585 #endif 728 #endif
586#endif 729#endif
587 730
588#ifndef ECB_MEMORY_FENCE 731#ifndef ECB_MEMORY_FENCE
589 #if !ECB_AVOID_PTHREADS 732 #if !ECB_AVOID_PTHREADS
… …
601 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 744 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
602 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 745 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
603 #endif 746 #endif
604#endif 747#endif
605 748
606#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 749#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
607 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 750 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
608#endif 751#endif
609 752
610#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
612#endif 755#endif
613 756
614/*****************************************************************************/ 757/*****************************************************************************/
615
616#define ECB_C99 (__STDC_VERSION__ >= 199901L)
617 758
618#if __cplusplus 759#if __cplusplus
619 #define ecb_inline static inline 760 #define ecb_inline static inline
620#elif ECB_GCC_VERSION(2,5) 761#elif ECB_GCC_VERSION(2,5)
621 #define ecb_inline static __inline__ 762 #define ecb_inline static __inline__
… …
647 #define ecb_is_constant(expr) __builtin_constant_p (expr) 788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
648 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
649 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
650#else 791#else
651 #define ecb_attribute(attrlist) 792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797
652 #define ecb_is_constant(expr) 0 798 #define ecb_is_constant(expr) 0
653 #define ecb_expect(expr,value) (expr) 799 #define ecb_expect(expr,value) (expr)
654 #define ecb_prefetch(addr,rw,locality) 800 #define ecb_prefetch(addr,rw,locality)
655#endif 801#endif
656 802
… …
659 #define ecb_decltype(x) __decltype(x) 805 #define ecb_decltype(x) __decltype(x)
660#elif ECB_GCC_VERSION(3,0) 806#elif ECB_GCC_VERSION(3,0)
661 #define ecb_decltype(x) __typeof(x) 807 #define ecb_decltype(x) __typeof(x)
662#endif 808#endif
663 809
810#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated)
812#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif
815
664#define ecb_noinline ecb_attribute ((__noinline__)) 816#define ecb_noinline ecb_attribute ((__noinline__))
665#define ecb_noreturn ecb_attribute ((__noreturn__))
666#define ecb_unused ecb_attribute ((__unused__)) 817#define ecb_unused ecb_attribute ((__unused__))
667#define ecb_const ecb_attribute ((__const__)) 818#define ecb_const ecb_attribute ((__const__))
668#define ecb_pure ecb_attribute ((__pure__)) 819#define ecb_pure ecb_attribute ((__pure__))
820
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
822#if ECB_C11
823 #define ecb_noreturn _Noreturn
824#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif
669 827
670#if ECB_GCC_VERSION(4,3) 828#if ECB_GCC_VERSION(4,3)
671 #define ecb_artificial ecb_attribute ((__artificial__)) 829 #define ecb_artificial ecb_attribute ((__artificial__))
672 #define ecb_hot ecb_attribute ((__hot__)) 830 #define ecb_hot ecb_attribute ((__hot__))
673 #define ecb_cold ecb_attribute ((__cold__)) 831 #define ecb_cold ecb_attribute ((__cold__))
… …
764 922
765 return r + ecb_ld32 (x); 923 return r + ecb_ld32 (x);
766 } 924 }
767#endif 925#endif
768 926
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
928ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
930ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
931
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
934{
935 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937}
938
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
941{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8);
946
947 return x;
948}
949
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
952{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
957 x = ( x >> 16 ) | ( x << 16);
958
959 return x;
960}
961
769/* popcount64 is only available on 64 bit cpus as gcc builtin */ 962/* popcount64 is only available on 64 bit cpus as gcc builtin */
770/* so for this version we are lazy */ 963/* so for this version we are lazy */
771ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
772ecb_function_ int 965ecb_function_ int
773ecb_popcount64 (uint64_t x) 966ecb_popcount64 (uint64_t x)
… …
822 1015
823#if ECB_GCC_VERSION(4,5) 1016#if ECB_GCC_VERSION(4,5)
824 #define ecb_unreachable() __builtin_unreachable () 1017 #define ecb_unreachable() __builtin_unreachable ()
825#else 1018#else
826 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1019 /* this seems to work fine, but gcc always emits a warning for it :/ */
827 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1020 ecb_inline void ecb_unreachable (void) ecb_noreturn;
828 ecb_function_ void ecb_unreachable (void) { } 1021 ecb_inline void ecb_unreachable (void) { }
829#endif 1022#endif
830 1023
831/* try to tell the compiler that some condition is definitely true */ 1024/* try to tell the compiler that some condition is definitely true */
832#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
833 1026
834ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
835ecb_function_ unsigned char 1028ecb_inline unsigned char
836ecb_byteorder_helper (void) 1029ecb_byteorder_helper (void)
837{ 1030{
838 const uint32_t u = 0x11223344; 1031 /* the union code still generates code under pressure in gcc, */
839 return *(unsigned char *)&u; 1032 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */
1035 /* is to avoid it in all cases, at least on common architectures */
1036 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1040 return 0x44;
1041#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1042 return 0x11;
1043#else
1044 union
1045 {
1046 uint32_t i;
1047 uint8_t c;
1048 } u = { 0x11223344 };
1049 return u.c;
1050#endif
840} 1051}
841 1052
842ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
843ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1054ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
844ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
845ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1056ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
846 1057
847#if ECB_GCC_VERSION(3,0) || ECB_C99 1058#if ECB_GCC_VERSION(3,0) || ECB_C99
848 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1059 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
849#else 1060#else
850 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1061 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1062#endif
1063
1064#if __cplusplus
1065 template<typename T>
1066 static inline T ecb_div_rd (T val, T div)
1067 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 }
1070 template<typename T>
1071 static inline T ecb_div_ru (T val, T div)
1072 {
1073 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1074 }
1075#else
1076 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1077 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
851#endif 1078#endif
852 1079
853#if ecb_cplusplus_does_not_suck 1080#if ecb_cplusplus_does_not_suck
854 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1081 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
855 template<typename T, int N> 1082 template<typename T, int N>
… …
859 } 1086 }
860#else 1087#else
861 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
862#endif 1089#endif
863 1090
1091/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093
1094/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \
1097 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \
1102 || defined __alpha__ \
1103 || defined __hppa__ \
1104 || defined __ia64__ \
1105 || defined __m68k__ \
1106 || defined __m88k__ \
1107 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1109 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1110 || defined __aarch64__
1111 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */
1113#else
1114 #define ECB_STDFP 0
1115#endif
1116
1117#ifndef ECB_NO_LIBM
1118
1119 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1120
1121 /* only the oldest of old doesn't have this one. solaris. */
1122 #ifdef INFINITY
1123 #define ECB_INFINITY INFINITY
1124 #else
1125 #define ECB_INFINITY HUGE_VAL
1126 #endif
1127
1128 #ifdef NAN
1129 #define ECB_NAN NAN
1130 #else
1131 #define ECB_NAN ECB_INFINITY
1132 #endif
1133
1134 /* converts an ieee half/binary16 to a float */
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1136 ecb_function_ float
1137 ecb_binary16_to_float (uint16_t x)
1138 {
1139 int e = (x >> 10) & 0x1f;
1140 int m = x & 0x3ff;
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150
1151 /* convert a float to ieee single/binary32 */
1152 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1153 ecb_function_ uint32_t
1154 ecb_float_to_binary32 (float x)
1155 {
1156 uint32_t r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* slow emulation, works for anything but -0 */
1162 uint32_t m;
1163 int e;
1164
1165 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU;
1169
1170 m = frexpf (x, &e) * 0x1000000U;
1171
1172 r = m & 0x80000000U;
1173
1174 if (r)
1175 m = -m;
1176
1177 if (e <= -126)
1178 {
1179 m &= 0xffffffU;
1180 m >>= (-125 - e);
1181 e = -126;
1182 }
1183
1184 r |= (e + 126) << 23;
1185 r |= m & 0x7fffffU;
1186 #endif
1187
1188 return r;
1189 }
1190
1191 /* converts an ieee single/binary32 to a float */
1192 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1193 ecb_function_ float
1194 ecb_binary32_to_float (uint32_t x)
1195 {
1196 float r;
1197
1198 #if ECB_STDFP
1199 memcpy (&r, &x, 4);
1200 #else
1201 /* emulation, only works for normals and subnormals and +0 */
1202 int neg = x >> 31;
1203 int e = (x >> 23) & 0xffU;
1204
1205 x &= 0x7fffffU;
1206
1207 if (e)
1208 x |= 0x800000U;
1209 else
1210 e = 1;
1211
1212 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1214
1215 r = neg ? -r : r;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* convert a double to ieee double/binary64 */
1222 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1223 ecb_function_ uint64_t
1224 ecb_double_to_binary64 (double x)
1225 {
1226 uint64_t r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* slow emulation, works for anything but -0 */
1232 uint64_t m;
1233 int e;
1234
1235 if (x == 0e0 ) return 0x0000000000000000U;
1236 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1237 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1238 if (x != x ) return 0X7ff7ffffffffffffU;
1239
1240 m = frexp (x, &e) * 0x20000000000000U;
1241
1242 r = m & 0x8000000000000000;;
1243
1244 if (r)
1245 m = -m;
1246
1247 if (e <= -1022)
1248 {
1249 m &= 0x1fffffffffffffU;
1250 m >>= (-1021 - e);
1251 e = -1022;
1252 }
1253
1254 r |= ((uint64_t)(e + 1022)) << 52;
1255 r |= m & 0xfffffffffffffU;
1256 #endif
1257
1258 return r;
1259 }
1260
1261 /* converts an ieee double/binary64 to a double */
1262 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1263 ecb_function_ double
1264 ecb_binary64_to_double (uint64_t x)
1265 {
1266 double r;
1267
1268 #if ECB_STDFP
1269 memcpy (&r, &x, 8);
1270 #else
1271 /* emulation, only works for normals and subnormals and +0 */
1272 int neg = x >> 63;
1273 int e = (x >> 52) & 0x7ffU;
1274
1275 x &= 0xfffffffffffffU;
1276
1277 if (e)
1278 x |= 0x10000000000000U;
1279 else
1280 e = 1;
1281
1282 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1283 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1284
1285 r = neg ? -r : r;
1286 #endif
1287
1288 return r;
1289 }
1290
1291#endif
1292
864#endif 1293#endif
865 1294
866/* ECB.H END */ 1295/* ECB.H END */
867 1296
868#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1297#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1298/* if your architecture doesn't need memory fences, e.g. because it is
1299 * single-cpu/core, or if you use libev in a project that doesn't use libev
1300 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1301 * libev, in which cases the memory fences become nops.
1302 * alternatively, you can remove this #error and link against libpthread,
1303 * which will then provide the memory fences.
1304 */
1305# error "memory fences not defined for your architecture, please report"
1306#endif
1307
869# undef ECB_MEMORY_FENCE 1308#ifndef ECB_MEMORY_FENCE
870# undef ECB_MEMORY_FENCE_ACQUIRE 1309# define ECB_MEMORY_FENCE do { } while (0)
871# undef ECB_MEMORY_FENCE_RELEASE 1310# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1311# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
872#endif 1312#endif
873 1313
874#define expect_false(cond) ecb_expect_false (cond) 1314#define expect_false(cond) ecb_expect_false (cond)
875#define expect_true(cond) ecb_expect_true (cond) 1315#define expect_true(cond) ecb_expect_true (cond)
876#define noinline ecb_noinline 1316#define noinline ecb_noinline
… …
1023{ 1463{
1024 write (STDERR_FILENO, msg, strlen (msg)); 1464 write (STDERR_FILENO, msg, strlen (msg));
1025} 1465}
1026#endif 1466#endif
1027 1467
1028static void (*syserr_cb)(const char *msg); 1468static void (*syserr_cb)(const char *msg) EV_THROW;
1029 1469
1030void ecb_cold 1470void ecb_cold
1031ev_set_syserr_cb (void (*cb)(const char *msg)) 1471ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1032{ 1472{
1033 syserr_cb = cb; 1473 syserr_cb = cb;
1034} 1474}
1035 1475
1036static void noinline ecb_cold 1476static void noinline ecb_cold
… …
1054 abort (); 1494 abort ();
1055 } 1495 }
1056} 1496}
1057 1497
1058static void * 1498static void *
1059ev_realloc_emul (void *ptr, long size) 1499ev_realloc_emul (void *ptr, long size) EV_THROW
1060{ 1500{
1061#if __GLIBC__
1062 return realloc (ptr, size);
1063#else
1064 /* some systems, notably openbsd and darwin, fail to properly 1501 /* some systems, notably openbsd and darwin, fail to properly
1065 * implement realloc (x, 0) (as required by both ansi c-89 and 1502 * implement realloc (x, 0) (as required by both ansi c-89 and
1066 * the single unix specification, so work around them here. 1503 * the single unix specification, so work around them here.
1504 * recently, also (at least) fedora and debian started breaking it,
1505 * despite documenting it otherwise.
1067 */ 1506 */
1068 1507
1069 if (size) 1508 if (size)
1070 return realloc (ptr, size); 1509 return realloc (ptr, size);
1071 1510
1072 free (ptr); 1511 free (ptr);
1073 return 0; 1512 return 0;
1074#endif
1075} 1513}
1076 1514
1077static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1078 1516
1079void ecb_cold 1517void ecb_cold
1080ev_set_allocator (void *(*cb)(void *ptr, long size)) 1518ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1081{ 1519{
1082 alloc = cb; 1520 alloc = cb;
1083} 1521}
1084 1522
1085inline_speed void * 1523inline_speed void *
… …
1173 #undef VAR 1611 #undef VAR
1174 }; 1612 };
1175 #include "ev_wrap.h" 1613 #include "ev_wrap.h"
1176 1614
1177 static struct ev_loop default_loop_struct; 1615 static struct ev_loop default_loop_struct;
1178 struct ev_loop *ev_default_loop_ptr; 1616 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1179 1617
1180#else 1618#else
1181 1619
1182 ev_tstamp ev_rt_now; 1620 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1183 #define VAR(name,decl) static decl; 1621 #define VAR(name,decl) static decl;
1184 #include "ev_vars.h" 1622 #include "ev_vars.h"
1185 #undef VAR 1623 #undef VAR
1186 1624
1187 static int ev_default_loop_ptr; 1625 static int ev_default_loop_ptr;
… …
1202 1640
1203/*****************************************************************************/ 1641/*****************************************************************************/
1204 1642
1205#ifndef EV_HAVE_EV_TIME 1643#ifndef EV_HAVE_EV_TIME
1206ev_tstamp 1644ev_tstamp
1207ev_time (void) 1645ev_time (void) EV_THROW
1208{ 1646{
1209#if EV_USE_REALTIME 1647#if EV_USE_REALTIME
1210 if (expect_true (have_realtime)) 1648 if (expect_true (have_realtime))
1211 { 1649 {
1212 struct timespec ts; 1650 struct timespec ts;
… …
1236 return ev_time (); 1674 return ev_time ();
1237} 1675}
1238 1676
1239#if EV_MULTIPLICITY 1677#if EV_MULTIPLICITY
1240ev_tstamp 1678ev_tstamp
1241ev_now (EV_P) 1679ev_now (EV_P) EV_THROW
1242{ 1680{
1243 return ev_rt_now; 1681 return ev_rt_now;
1244} 1682}
1245#endif 1683#endif
1246 1684
1247void 1685void
1248ev_sleep (ev_tstamp delay) 1686ev_sleep (ev_tstamp delay) EV_THROW
1249{ 1687{
1250 if (delay > 0.) 1688 if (delay > 0.)
1251 { 1689 {
1252#if EV_USE_NANOSLEEP 1690#if EV_USE_NANOSLEEP
1253 struct timespec ts; 1691 struct timespec ts;
1254 1692
1255 EV_TS_SET (ts, delay); 1693 EV_TS_SET (ts, delay);
1256 nanosleep (&ts, 0); 1694 nanosleep (&ts, 0);
1257#elif defined(_WIN32) 1695#elif defined _WIN32
1258 Sleep ((unsigned long)(delay * 1e3)); 1696 Sleep ((unsigned long)(delay * 1e3));
1259#else 1697#else
1260 struct timeval tv; 1698 struct timeval tv;
1261 1699
1262 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1700 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1281 1719
1282 do 1720 do
1283 ncur <<= 1; 1721 ncur <<= 1;
1284 while (cnt > ncur); 1722 while (cnt > ncur);
1285 1723
1286 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1724 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1287 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1725 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1288 { 1726 {
1289 ncur *= elem; 1727 ncur *= elem;
1290 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1728 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1291 ncur = ncur - sizeof (void *) * 4; 1729 ncur = ncur - sizeof (void *) * 4;
… …
1334pendingcb (EV_P_ ev_prepare *w, int revents) 1772pendingcb (EV_P_ ev_prepare *w, int revents)
1335{ 1773{
1336} 1774}
1337 1775
1338void noinline 1776void noinline
1339ev_feed_event (EV_P_ void *w, int revents) 1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1340{ 1778{
1341 W w_ = (W)w; 1779 W w_ = (W)w;
1342 int pri = ABSPRI (w_); 1780 int pri = ABSPRI (w_);
1343 1781
1344 if (expect_false (w_->pending)) 1782 if (expect_false (w_->pending))
… …
1348 w_->pending = ++pendingcnt [pri]; 1786 w_->pending = ++pendingcnt [pri];
1349 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1350 pendings [pri][w_->pending - 1].w = w_; 1788 pendings [pri][w_->pending - 1].w = w_;
1351 pendings [pri][w_->pending - 1].events = revents; 1789 pendings [pri][w_->pending - 1].events = revents;
1352 } 1790 }
1791
1792 pendingpri = NUMPRI - 1;
1353} 1793}
1354 1794
1355inline_speed void 1795inline_speed void
1356feed_reverse (EV_P_ W w) 1796feed_reverse (EV_P_ W w)
1357{ 1797{
… …
1403 if (expect_true (!anfd->reify)) 1843 if (expect_true (!anfd->reify))
1404 fd_event_nocheck (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
1405} 1845}
1406 1846
1407void 1847void
1408ev_feed_fd_event (EV_P_ int fd, int revents) 1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1409{ 1849{
1410 if (fd >= 0 && fd < anfdmax) 1850 if (fd >= 0 && fd < anfdmax)
1411 fd_event_nocheck (EV_A_ fd, revents); 1851 fd_event_nocheck (EV_A_ fd, revents);
1412} 1852}
1413 1853
… …
1732static void noinline ecb_cold 2172static void noinline ecb_cold
1733evpipe_init (EV_P) 2173evpipe_init (EV_P)
1734{ 2174{
1735 if (!ev_is_active (&pipe_w)) 2175 if (!ev_is_active (&pipe_w))
1736 { 2176 {
2177 int fds [2];
2178
1737# if EV_USE_EVENTFD 2179# if EV_USE_EVENTFD
2180 fds [0] = -1;
1738 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2181 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1739 if (evfd < 0 && errno == EINVAL) 2182 if (fds [1] < 0 && errno == EINVAL)
1740 evfd = eventfd (0, 0); 2183 fds [1] = eventfd (0, 0);
1741 2184
1742 if (evfd >= 0) 2185 if (fds [1] < 0)
2186# endif
1743 { 2187 {
2188 while (pipe (fds))
2189 ev_syserr ("(libev) error creating signal/async pipe");
2190
2191 fd_intern (fds [0]);
2192 }
2193
1744 evpipe [0] = -1; 2194 evpipe [0] = fds [0];
1745 fd_intern (evfd); /* doing it twice doesn't hurt */ 2195
1746 ev_io_set (&pipe_w, evfd, EV_READ); 2196 if (evpipe [1] < 0)
2197 evpipe [1] = fds [1]; /* first call, set write fd */
2198 else
2199 {
2200 /* on subsequent calls, do not change evpipe [1] */
2201 /* so that evpipe_write can always rely on its value. */
2202 /* this branch does not do anything sensible on windows, */
2203 /* so must not be executed on windows */
2204
2205 dup2 (fds [1], evpipe [1]);
2206 close (fds [1]);
2207 }
2208
2209 fd_intern (evpipe [1]);
2210
2211 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2212 ev_io_start (EV_A_ &pipe_w);
2213 ev_unref (EV_A); /* watcher should not keep loop alive */
2214 }
2215}
2216
2217inline_speed void
2218evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2219{
2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2221
2222 if (expect_true (*flag))
2223 return;
2224
2225 *flag = 1;
2226 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2227
2228 pipe_write_skipped = 1;
2229
2230 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2231
2232 if (pipe_write_wanted)
2233 {
2234 int old_errno;
2235
2236 pipe_write_skipped = 0;
2237 ECB_MEMORY_FENCE_RELEASE;
2238
2239 old_errno = errno; /* save errno because write will clobber it */
2240
2241#if EV_USE_EVENTFD
2242 if (evpipe [0] < 0)
2243 {
2244 uint64_t counter = 1;
2245 write (evpipe [1], &counter, sizeof (uint64_t));
1747 } 2246 }
1748 else 2247 else
1749# endif 2248#endif
1750 { 2249 {
1751 while (pipe (evpipe)) 2250#ifdef _WIN32
1752 ev_syserr ("(libev) error creating signal/async pipe"); 2251 WSABUF buf;
1753 2252 DWORD sent;
1754 fd_intern (evpipe [0]); 2253 buf.buf = &buf;
1755 fd_intern (evpipe [1]); 2254 buf.len = 1;
1756 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2255 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1757 } 2256#else
1758
1759 ev_io_start (EV_A_ &pipe_w);
1760 ev_unref (EV_A); /* watcher should not keep loop alive */
1761 }
1762}
1763
1764inline_speed void
1765evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1766{
1767 if (expect_true (*flag))
1768 return;
1769
1770 *flag = 1;
1771
1772 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1773
1774 pipe_write_skipped = 1;
1775
1776 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1777
1778 if (pipe_write_wanted)
1779 {
1780 int old_errno;
1781
1782 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1783
1784 old_errno = errno; /* save errno because write will clobber it */
1785
1786#if EV_USE_EVENTFD
1787 if (evfd >= 0)
1788 {
1789 uint64_t counter = 1;
1790 write (evfd, &counter, sizeof (uint64_t));
1791 }
1792 else
1793#endif
1794 {
1795 /* win32 people keep sending patches that change this write() to send() */
1796 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1797 /* so when you think this write should be a send instead, please find out */
1798 /* where your send() is from - it's definitely not the microsoft send, and */
1799 /* tell me. thank you. */
1800 write (evpipe [1], &(evpipe [1]), 1); 2257 write (evpipe [1], &(evpipe [1]), 1);
2258#endif
1801 } 2259 }
1802 2260
1803 errno = old_errno; 2261 errno = old_errno;
1804 } 2262 }
1805} 2263}
… …
1812 int i; 2270 int i;
1813 2271
1814 if (revents & EV_READ) 2272 if (revents & EV_READ)
1815 { 2273 {
1816#if EV_USE_EVENTFD 2274#if EV_USE_EVENTFD
1817 if (evfd >= 0) 2275 if (evpipe [0] < 0)
1818 { 2276 {
1819 uint64_t counter; 2277 uint64_t counter;
1820 read (evfd, &counter, sizeof (uint64_t)); 2278 read (evpipe [1], &counter, sizeof (uint64_t));
1821 } 2279 }
1822 else 2280 else
1823#endif 2281#endif
1824 { 2282 {
1825 char dummy; 2283 char dummy[4];
1826 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2284#ifdef _WIN32
2285 WSABUF buf;
2286 DWORD recvd;
2287 DWORD flags = 0;
2288 buf.buf = dummy;
2289 buf.len = sizeof (dummy);
2290 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2291#else
1827 read (evpipe [0], &dummy, 1); 2292 read (evpipe [0], &dummy, sizeof (dummy));
2293#endif
1828 } 2294 }
1829 } 2295 }
1830 2296
1831 pipe_write_skipped = 0; 2297 pipe_write_skipped = 0;
2298
2299 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1832 2300
1833#if EV_SIGNAL_ENABLE 2301#if EV_SIGNAL_ENABLE
1834 if (sig_pending) 2302 if (sig_pending)
1835 { 2303 {
1836 sig_pending = 0; 2304 sig_pending = 0;
2305
2306 ECB_MEMORY_FENCE;
1837 2307
1838 for (i = EV_NSIG - 1; i--; ) 2308 for (i = EV_NSIG - 1; i--; )
1839 if (expect_false (signals [i].pending)) 2309 if (expect_false (signals [i].pending))
1840 ev_feed_signal_event (EV_A_ i + 1); 2310 ev_feed_signal_event (EV_A_ i + 1);
1841 } 2311 }
… …
1843 2313
1844#if EV_ASYNC_ENABLE 2314#if EV_ASYNC_ENABLE
1845 if (async_pending) 2315 if (async_pending)
1846 { 2316 {
1847 async_pending = 0; 2317 async_pending = 0;
2318
2319 ECB_MEMORY_FENCE;
1848 2320
1849 for (i = asynccnt; i--; ) 2321 for (i = asynccnt; i--; )
1850 if (asyncs [i]->sent) 2322 if (asyncs [i]->sent)
1851 { 2323 {
1852 asyncs [i]->sent = 0; 2324 asyncs [i]->sent = 0;
2325 ECB_MEMORY_FENCE_RELEASE;
1853 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2326 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1854 } 2327 }
1855 } 2328 }
1856#endif 2329#endif
1857} 2330}
1858 2331
1859/*****************************************************************************/ 2332/*****************************************************************************/
1860 2333
1861void 2334void
1862ev_feed_signal (int signum) 2335ev_feed_signal (int signum) EV_THROW
1863{ 2336{
1864#if EV_MULTIPLICITY 2337#if EV_MULTIPLICITY
2338 EV_P;
2339 ECB_MEMORY_FENCE_ACQUIRE;
1865 EV_P = signals [signum - 1].loop; 2340 EV_A = signals [signum - 1].loop;
1866 2341
1867 if (!EV_A) 2342 if (!EV_A)
1868 return; 2343 return;
1869#endif 2344#endif
1870 2345
1871 if (!ev_active (&pipe_w))
1872 return;
1873
1874 signals [signum - 1].pending = 1; 2346 signals [signum - 1].pending = 1;
1875 evpipe_write (EV_A_ &sig_pending); 2347 evpipe_write (EV_A_ &sig_pending);
1876} 2348}
1877 2349
1878static void 2350static void
… …
1884 2356
1885 ev_feed_signal (signum); 2357 ev_feed_signal (signum);
1886} 2358}
1887 2359
1888void noinline 2360void noinline
1889ev_feed_signal_event (EV_P_ int signum) 2361ev_feed_signal_event (EV_P_ int signum) EV_THROW
1890{ 2362{
1891 WL w; 2363 WL w;
1892 2364
1893 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2365 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1894 return; 2366 return;
1895 2367
1896 --signum; 2368 --signum;
1897 2369
1898#if EV_MULTIPLICITY 2370#if EV_MULTIPLICITY
… …
1902 if (expect_false (signals [signum].loop != EV_A)) 2374 if (expect_false (signals [signum].loop != EV_A))
1903 return; 2375 return;
1904#endif 2376#endif
1905 2377
1906 signals [signum].pending = 0; 2378 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE;
1907 2380
1908 for (w = signals [signum].head; w; w = w->next) 2381 for (w = signals [signum].head; w; w = w->next)
1909 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2382 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1910} 2383}
1911 2384
… …
2010#if EV_USE_SELECT 2483#if EV_USE_SELECT
2011# include "ev_select.c" 2484# include "ev_select.c"
2012#endif 2485#endif
2013 2486
2014int ecb_cold 2487int ecb_cold
2015ev_version_major (void) 2488ev_version_major (void) EV_THROW
2016{ 2489{
2017 return EV_VERSION_MAJOR; 2490 return EV_VERSION_MAJOR;
2018} 2491}
2019 2492
2020int ecb_cold 2493int ecb_cold
2021ev_version_minor (void) 2494ev_version_minor (void) EV_THROW
2022{ 2495{
2023 return EV_VERSION_MINOR; 2496 return EV_VERSION_MINOR;
2024} 2497}
2025 2498
2026/* return true if we are running with elevated privileges and should ignore env variables */ 2499/* return true if we are running with elevated privileges and should ignore env variables */
… …
2034 || getgid () != getegid (); 2507 || getgid () != getegid ();
2035#endif 2508#endif
2036} 2509}
2037 2510
2038unsigned int ecb_cold 2511unsigned int ecb_cold
2039ev_supported_backends (void) 2512ev_supported_backends (void) EV_THROW
2040{ 2513{
2041 unsigned int flags = 0; 2514 unsigned int flags = 0;
2042 2515
2043 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2044 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2048 2521
2049 return flags; 2522 return flags;
2050} 2523}
2051 2524
2052unsigned int ecb_cold 2525unsigned int ecb_cold
2053ev_recommended_backends (void) 2526ev_recommended_backends (void) EV_THROW
2054{ 2527{
2055 unsigned int flags = ev_supported_backends (); 2528 unsigned int flags = ev_supported_backends ();
2056 2529
2057#ifndef __NetBSD__ 2530#ifndef __NetBSD__
2058 /* kqueue is borked on everything but netbsd apparently */ 2531 /* kqueue is borked on everything but netbsd apparently */
… …
2070 2543
2071 return flags; 2544 return flags;
2072} 2545}
2073 2546
2074unsigned int ecb_cold 2547unsigned int ecb_cold
2075ev_embeddable_backends (void) 2548ev_embeddable_backends (void) EV_THROW
2076{ 2549{
2077 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2078 2551
2079 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2552 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2080 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2553 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2082 2555
2083 return flags; 2556 return flags;
2084} 2557}
2085 2558
2086unsigned int 2559unsigned int
2087ev_backend (EV_P) 2560ev_backend (EV_P) EV_THROW
2088{ 2561{
2089 return backend; 2562 return backend;
2090} 2563}
2091 2564
2092#if EV_FEATURE_API 2565#if EV_FEATURE_API
2093unsigned int 2566unsigned int
2094ev_iteration (EV_P) 2567ev_iteration (EV_P) EV_THROW
2095{ 2568{
2096 return loop_count; 2569 return loop_count;
2097} 2570}
2098 2571
2099unsigned int 2572unsigned int
2100ev_depth (EV_P) 2573ev_depth (EV_P) EV_THROW
2101{ 2574{
2102 return loop_depth; 2575 return loop_depth;
2103} 2576}
2104 2577
2105void 2578void
2106ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2107{ 2580{
2108 io_blocktime = interval; 2581 io_blocktime = interval;
2109} 2582}
2110 2583
2111void 2584void
2112ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2113{ 2586{
2114 timeout_blocktime = interval; 2587 timeout_blocktime = interval;
2115} 2588}
2116 2589
2117void 2590void
2118ev_set_userdata (EV_P_ void *data) 2591ev_set_userdata (EV_P_ void *data) EV_THROW
2119{ 2592{
2120 userdata = data; 2593 userdata = data;
2121} 2594}
2122 2595
2123void * 2596void *
2124ev_userdata (EV_P) 2597ev_userdata (EV_P) EV_THROW
2125{ 2598{
2126 return userdata; 2599 return userdata;
2127} 2600}
2128 2601
2129void 2602void
2130ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2131{ 2604{
2132 invoke_cb = invoke_pending_cb; 2605 invoke_cb = invoke_pending_cb;
2133} 2606}
2134 2607
2135void 2608void
2136ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
2137{ 2610{
2138 release_cb = release; 2611 release_cb = release;
2139 acquire_cb = acquire; 2612 acquire_cb = acquire;
2140} 2613}
2141#endif 2614#endif
2142 2615
2143/* initialise a loop structure, must be zero-initialised */ 2616/* initialise a loop structure, must be zero-initialised */
2144static void noinline ecb_cold 2617static void noinline ecb_cold
2145loop_init (EV_P_ unsigned int flags) 2618loop_init (EV_P_ unsigned int flags) EV_THROW
2146{ 2619{
2147 if (!backend) 2620 if (!backend)
2148 { 2621 {
2149 origflags = flags; 2622 origflags = flags;
2150 2623
… …
2195#if EV_ASYNC_ENABLE 2668#if EV_ASYNC_ENABLE
2196 async_pending = 0; 2669 async_pending = 0;
2197#endif 2670#endif
2198 pipe_write_skipped = 0; 2671 pipe_write_skipped = 0;
2199 pipe_write_wanted = 0; 2672 pipe_write_wanted = 0;
2673 evpipe [0] = -1;
2674 evpipe [1] = -1;
2200#if EV_USE_INOTIFY 2675#if EV_USE_INOTIFY
2201 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2676 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2202#endif 2677#endif
2203#if EV_USE_SIGNALFD 2678#if EV_USE_SIGNALFD
2204 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2679 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2255 EV_INVOKE_PENDING; 2730 EV_INVOKE_PENDING;
2256 } 2731 }
2257#endif 2732#endif
2258 2733
2259#if EV_CHILD_ENABLE 2734#if EV_CHILD_ENABLE
2260 if (ev_is_active (&childev)) 2735 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2261 { 2736 {
2262 ev_ref (EV_A); /* child watcher */ 2737 ev_ref (EV_A); /* child watcher */
2263 ev_signal_stop (EV_A_ &childev); 2738 ev_signal_stop (EV_A_ &childev);
2264 } 2739 }
2265#endif 2740#endif
… …
2267 if (ev_is_active (&pipe_w)) 2742 if (ev_is_active (&pipe_w))
2268 { 2743 {
2269 /*ev_ref (EV_A);*/ 2744 /*ev_ref (EV_A);*/
2270 /*ev_io_stop (EV_A_ &pipe_w);*/ 2745 /*ev_io_stop (EV_A_ &pipe_w);*/
2271 2746
2272#if EV_USE_EVENTFD
2273 if (evfd >= 0)
2274 close (evfd);
2275#endif
2276
2277 if (evpipe [0] >= 0)
2278 {
2279 EV_WIN32_CLOSE_FD (evpipe [0]); 2747 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2280 EV_WIN32_CLOSE_FD (evpipe [1]); 2748 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2281 }
2282 } 2749 }
2283 2750
2284#if EV_USE_SIGNALFD 2751#if EV_USE_SIGNALFD
2285 if (ev_is_active (&sigfd_w)) 2752 if (ev_is_active (&sigfd_w))
2286 close (sigfd); 2753 close (sigfd);
… …
2372#endif 2839#endif
2373#if EV_USE_INOTIFY 2840#if EV_USE_INOTIFY
2374 infy_fork (EV_A); 2841 infy_fork (EV_A);
2375#endif 2842#endif
2376 2843
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2377 if (ev_is_active (&pipe_w)) 2845 if (ev_is_active (&pipe_w))
2378 { 2846 {
2379 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2847 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2380 2848
2381 ev_ref (EV_A); 2849 ev_ref (EV_A);
2382 ev_io_stop (EV_A_ &pipe_w); 2850 ev_io_stop (EV_A_ &pipe_w);
2383 2851
2384#if EV_USE_EVENTFD
2385 if (evfd >= 0)
2386 close (evfd);
2387#endif
2388
2389 if (evpipe [0] >= 0) 2852 if (evpipe [0] >= 0)
2390 {
2391 EV_WIN32_CLOSE_FD (evpipe [0]); 2853 EV_WIN32_CLOSE_FD (evpipe [0]);
2392 EV_WIN32_CLOSE_FD (evpipe [1]);
2393 }
2394 2854
2395#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2396 evpipe_init (EV_A); 2855 evpipe_init (EV_A);
2397 /* now iterate over everything, in case we missed something */ 2856 /* iterate over everything, in case we missed something before */
2398 pipecb (EV_A_ &pipe_w, EV_READ); 2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2399#endif
2400 } 2858 }
2859#endif
2401 2860
2402 postfork = 0; 2861 postfork = 0;
2403} 2862}
2404 2863
2405#if EV_MULTIPLICITY 2864#if EV_MULTIPLICITY
2406 2865
2407struct ev_loop * ecb_cold 2866struct ev_loop * ecb_cold
2408ev_loop_new (unsigned int flags) 2867ev_loop_new (unsigned int flags) EV_THROW
2409{ 2868{
2410 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2411 2870
2412 memset (EV_A, 0, sizeof (struct ev_loop)); 2871 memset (EV_A, 0, sizeof (struct ev_loop));
2413 loop_init (EV_A_ flags); 2872 loop_init (EV_A_ flags);
… …
2457} 2916}
2458#endif 2917#endif
2459 2918
2460#if EV_FEATURE_API 2919#if EV_FEATURE_API
2461void ecb_cold 2920void ecb_cold
2462ev_verify (EV_P) 2921ev_verify (EV_P) EV_THROW
2463{ 2922{
2464#if EV_VERIFY 2923#if EV_VERIFY
2465 int i; 2924 int i;
2466 WL w; 2925 WL w, w2;
2467 2926
2468 assert (activecnt >= -1); 2927 assert (activecnt >= -1);
2469 2928
2470 assert (fdchangemax >= fdchangecnt); 2929 assert (fdchangemax >= fdchangecnt);
2471 for (i = 0; i < fdchangecnt; ++i) 2930 for (i = 0; i < fdchangecnt; ++i)
2472 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2931 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2473 2932
2474 assert (anfdmax >= 0); 2933 assert (anfdmax >= 0);
2475 for (i = 0; i < anfdmax; ++i) 2934 for (i = 0; i < anfdmax; ++i)
2935 {
2936 int j = 0;
2937
2476 for (w = anfds [i].head; w; w = w->next) 2938 for (w = w2 = anfds [i].head; w; w = w->next)
2477 { 2939 {
2478 verify_watcher (EV_A_ (W)w); 2940 verify_watcher (EV_A_ (W)w);
2941
2942 if (j++ & 1)
2943 {
2944 assert (("libev: io watcher list contains a loop", w != w2));
2945 w2 = w2->next;
2946 }
2947
2479 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2948 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2480 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2949 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2481 } 2950 }
2951 }
2482 2952
2483 assert (timermax >= timercnt); 2953 assert (timermax >= timercnt);
2484 verify_heap (EV_A_ timers, timercnt); 2954 verify_heap (EV_A_ timers, timercnt);
2485 2955
2486#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
… …
2536#if EV_MULTIPLICITY 3006#if EV_MULTIPLICITY
2537struct ev_loop * ecb_cold 3007struct ev_loop * ecb_cold
2538#else 3008#else
2539int 3009int
2540#endif 3010#endif
2541ev_default_loop (unsigned int flags) 3011ev_default_loop (unsigned int flags) EV_THROW
2542{ 3012{
2543 if (!ev_default_loop_ptr) 3013 if (!ev_default_loop_ptr)
2544 { 3014 {
2545#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
2546 EV_P = ev_default_loop_ptr = &default_loop_struct; 3016 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2565 3035
2566 return ev_default_loop_ptr; 3036 return ev_default_loop_ptr;
2567} 3037}
2568 3038
2569void 3039void
2570ev_loop_fork (EV_P) 3040ev_loop_fork (EV_P) EV_THROW
2571{ 3041{
2572 postfork = 1; /* must be in line with ev_default_fork */ 3042 postfork = 1;
2573} 3043}
2574 3044
2575/*****************************************************************************/ 3045/*****************************************************************************/
2576 3046
2577void 3047void
… …
2579{ 3049{
2580 EV_CB_INVOKE ((W)w, revents); 3050 EV_CB_INVOKE ((W)w, revents);
2581} 3051}
2582 3052
2583unsigned int 3053unsigned int
2584ev_pending_count (EV_P) 3054ev_pending_count (EV_P) EV_THROW
2585{ 3055{
2586 int pri; 3056 int pri;
2587 unsigned int count = 0; 3057 unsigned int count = 0;
2588 3058
2589 for (pri = NUMPRI; pri--; ) 3059 for (pri = NUMPRI; pri--; )
… …
2593} 3063}
2594 3064
2595void noinline 3065void noinline
2596ev_invoke_pending (EV_P) 3066ev_invoke_pending (EV_P)
2597{ 3067{
2598 int pri; 3068 pendingpri = NUMPRI;
2599 3069
2600 for (pri = NUMPRI; pri--; ) 3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3071 {
3072 --pendingpri;
3073
2601 while (pendingcnt [pri]) 3074 while (pendingcnt [pendingpri])
2602 { 3075 {
2603 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2604 3077
2605 p->w->pending = 0; 3078 p->w->pending = 0;
2606 EV_CB_INVOKE (p->w, p->events); 3079 EV_CB_INVOKE (p->w, p->events);
2607 EV_FREQUENT_CHECK; 3080 EV_FREQUENT_CHECK;
2608 } 3081 }
3082 }
2609} 3083}
2610 3084
2611#if EV_IDLE_ENABLE 3085#if EV_IDLE_ENABLE
2612/* make idle watchers pending. this handles the "call-idle */ 3086/* make idle watchers pending. this handles the "call-idle */
2613/* only when higher priorities are idle" logic */ 3087/* only when higher priorities are idle" logic */
… …
2703{ 3177{
2704 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2705 3179
2706 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2707 { 3181 {
2708 int feed_count = 0;
2709
2710 do 3182 do
2711 { 3183 {
2712 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2713 3185
2714 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2848 3320
2849 mn_now = ev_rt_now; 3321 mn_now = ev_rt_now;
2850 } 3322 }
2851} 3323}
2852 3324
2853void 3325int
2854ev_run (EV_P_ int flags) 3326ev_run (EV_P_ int flags)
2855{ 3327{
2856#if EV_FEATURE_API 3328#if EV_FEATURE_API
2857 ++loop_depth; 3329 ++loop_depth;
2858#endif 3330#endif
… …
2971#endif 3443#endif
2972 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2973 backend_poll (EV_A_ waittime); 3445 backend_poll (EV_A_ waittime);
2974 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2975 3447
2976 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3448 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2977 3449
3450 ECB_MEMORY_FENCE_ACQUIRE;
2978 if (pipe_write_skipped) 3451 if (pipe_write_skipped)
2979 { 3452 {
2980 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3453 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2981 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3454 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2982 } 3455 }
… …
3015 loop_done = EVBREAK_CANCEL; 3488 loop_done = EVBREAK_CANCEL;
3016 3489
3017#if EV_FEATURE_API 3490#if EV_FEATURE_API
3018 --loop_depth; 3491 --loop_depth;
3019#endif 3492#endif
3493
3494 return activecnt;
3020} 3495}
3021 3496
3022void 3497void
3023ev_break (EV_P_ int how) 3498ev_break (EV_P_ int how) EV_THROW
3024{ 3499{
3025 loop_done = how; 3500 loop_done = how;
3026} 3501}
3027 3502
3028void 3503void
3029ev_ref (EV_P) 3504ev_ref (EV_P) EV_THROW
3030{ 3505{
3031 ++activecnt; 3506 ++activecnt;
3032} 3507}
3033 3508
3034void 3509void
3035ev_unref (EV_P) 3510ev_unref (EV_P) EV_THROW
3036{ 3511{
3037 --activecnt; 3512 --activecnt;
3038} 3513}
3039 3514
3040void 3515void
3041ev_now_update (EV_P) 3516ev_now_update (EV_P) EV_THROW
3042{ 3517{
3043 time_update (EV_A_ 1e100); 3518 time_update (EV_A_ 1e100);
3044} 3519}
3045 3520
3046void 3521void
3047ev_suspend (EV_P) 3522ev_suspend (EV_P) EV_THROW
3048{ 3523{
3049 ev_now_update (EV_A); 3524 ev_now_update (EV_A);
3050} 3525}
3051 3526
3052void 3527void
3053ev_resume (EV_P) 3528ev_resume (EV_P) EV_THROW
3054{ 3529{
3055 ev_tstamp mn_prev = mn_now; 3530 ev_tstamp mn_prev = mn_now;
3056 3531
3057 ev_now_update (EV_A); 3532 ev_now_update (EV_A);
3058 timers_reschedule (EV_A_ mn_now - mn_prev); 3533 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3097 w->pending = 0; 3572 w->pending = 0;
3098 } 3573 }
3099} 3574}
3100 3575
3101int 3576int
3102ev_clear_pending (EV_P_ void *w) 3577ev_clear_pending (EV_P_ void *w) EV_THROW
3103{ 3578{
3104 W w_ = (W)w; 3579 W w_ = (W)w;
3105 int pending = w_->pending; 3580 int pending = w_->pending;
3106 3581
3107 if (expect_true (pending)) 3582 if (expect_true (pending))
… …
3140} 3615}
3141 3616
3142/*****************************************************************************/ 3617/*****************************************************************************/
3143 3618
3144void noinline 3619void noinline
3145ev_io_start (EV_P_ ev_io *w) 3620ev_io_start (EV_P_ ev_io *w) EV_THROW
3146{ 3621{
3147 int fd = w->fd; 3622 int fd = w->fd;
3148 3623
3149 if (expect_false (ev_is_active (w))) 3624 if (expect_false (ev_is_active (w)))
3150 return; 3625 return;
… …
3156 3631
3157 ev_start (EV_A_ (W)w, 1); 3632 ev_start (EV_A_ (W)w, 1);
3158 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3159 wlist_add (&anfds[fd].head, (WL)w); 3634 wlist_add (&anfds[fd].head, (WL)w);
3160 3635
3636 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638
3161 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3639 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3162 w->events &= ~EV__IOFDSET; 3640 w->events &= ~EV__IOFDSET;
3163 3641
3164 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
3165} 3643}
3166 3644
3167void noinline 3645void noinline
3168ev_io_stop (EV_P_ ev_io *w) 3646ev_io_stop (EV_P_ ev_io *w) EV_THROW
3169{ 3647{
3170 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
3171 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
3172 return; 3650 return;
3173 3651
… …
3182 3660
3183 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
3184} 3662}
3185 3663
3186void noinline 3664void noinline
3187ev_timer_start (EV_P_ ev_timer *w) 3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3188{ 3666{
3189 if (expect_false (ev_is_active (w))) 3667 if (expect_false (ev_is_active (w)))
3190 return; 3668 return;
3191 3669
3192 ev_at (w) += mn_now; 3670 ev_at (w) += mn_now;
… …
3206 3684
3207 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3685 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3208} 3686}
3209 3687
3210void noinline 3688void noinline
3211ev_timer_stop (EV_P_ ev_timer *w) 3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3212{ 3690{
3213 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
3214 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
3215 return; 3693 return;
3216 3694
… …
3236 3714
3237 EV_FREQUENT_CHECK; 3715 EV_FREQUENT_CHECK;
3238} 3716}
3239 3717
3240void noinline 3718void noinline
3241ev_timer_again (EV_P_ ev_timer *w) 3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3242{ 3720{
3243 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3722
3723 clear_pending (EV_A_ (W)w);
3244 3724
3245 if (ev_is_active (w)) 3725 if (ev_is_active (w))
3246 { 3726 {
3247 if (w->repeat) 3727 if (w->repeat)
3248 { 3728 {
… …
3261 3741
3262 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
3263} 3743}
3264 3744
3265ev_tstamp 3745ev_tstamp
3266ev_timer_remaining (EV_P_ ev_timer *w) 3746ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3267{ 3747{
3268 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3269} 3749}
3270 3750
3271#if EV_PERIODIC_ENABLE 3751#if EV_PERIODIC_ENABLE
3272void noinline 3752void noinline
3273ev_periodic_start (EV_P_ ev_periodic *w) 3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3274{ 3754{
3275 if (expect_false (ev_is_active (w))) 3755 if (expect_false (ev_is_active (w)))
3276 return; 3756 return;
3277 3757
3278 if (w->reschedule_cb) 3758 if (w->reschedule_cb)
… …
3298 3778
3299 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3779 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3300} 3780}
3301 3781
3302void noinline 3782void noinline
3303ev_periodic_stop (EV_P_ ev_periodic *w) 3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3304{ 3784{
3305 clear_pending (EV_A_ (W)w); 3785 clear_pending (EV_A_ (W)w);
3306 if (expect_false (!ev_is_active (w))) 3786 if (expect_false (!ev_is_active (w)))
3307 return; 3787 return;
3308 3788
… …
3326 3806
3327 EV_FREQUENT_CHECK; 3807 EV_FREQUENT_CHECK;
3328} 3808}
3329 3809
3330void noinline 3810void noinline
3331ev_periodic_again (EV_P_ ev_periodic *w) 3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3332{ 3812{
3333 /* TODO: use adjustheap and recalculation */ 3813 /* TODO: use adjustheap and recalculation */
3334 ev_periodic_stop (EV_A_ w); 3814 ev_periodic_stop (EV_A_ w);
3335 ev_periodic_start (EV_A_ w); 3815 ev_periodic_start (EV_A_ w);
3336} 3816}
… …
3341#endif 3821#endif
3342 3822
3343#if EV_SIGNAL_ENABLE 3823#if EV_SIGNAL_ENABLE
3344 3824
3345void noinline 3825void noinline
3346ev_signal_start (EV_P_ ev_signal *w) 3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3347{ 3827{
3348 if (expect_false (ev_is_active (w))) 3828 if (expect_false (ev_is_active (w)))
3349 return; 3829 return;
3350 3830
3351 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3831 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3353#if EV_MULTIPLICITY 3833#if EV_MULTIPLICITY
3354 assert (("libev: a signal must not be attached to two different loops", 3834 assert (("libev: a signal must not be attached to two different loops",
3355 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3835 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3356 3836
3357 signals [w->signum - 1].loop = EV_A; 3837 signals [w->signum - 1].loop = EV_A;
3838 ECB_MEMORY_FENCE_RELEASE;
3358#endif 3839#endif
3359 3840
3360 EV_FREQUENT_CHECK; 3841 EV_FREQUENT_CHECK;
3361 3842
3362#if EV_USE_SIGNALFD 3843#if EV_USE_SIGNALFD
… …
3422 3903
3423 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
3424} 3905}
3425 3906
3426void noinline 3907void noinline
3427ev_signal_stop (EV_P_ ev_signal *w) 3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3428{ 3909{
3429 clear_pending (EV_A_ (W)w); 3910 clear_pending (EV_A_ (W)w);
3430 if (expect_false (!ev_is_active (w))) 3911 if (expect_false (!ev_is_active (w)))
3431 return; 3912 return;
3432 3913
… …
3463#endif 3944#endif
3464 3945
3465#if EV_CHILD_ENABLE 3946#if EV_CHILD_ENABLE
3466 3947
3467void 3948void
3468ev_child_start (EV_P_ ev_child *w) 3949ev_child_start (EV_P_ ev_child *w) EV_THROW
3469{ 3950{
3470#if EV_MULTIPLICITY 3951#if EV_MULTIPLICITY
3471 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3472#endif 3953#endif
3473 if (expect_false (ev_is_active (w))) 3954 if (expect_false (ev_is_active (w)))
… …
3480 3961
3481 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
3482} 3963}
3483 3964
3484void 3965void
3485ev_child_stop (EV_P_ ev_child *w) 3966ev_child_stop (EV_P_ ev_child *w) EV_THROW
3486{ 3967{
3487 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
3488 if (expect_false (!ev_is_active (w))) 3969 if (expect_false (!ev_is_active (w)))
3489 return; 3970 return;
3490 3971
… …
3517# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3518 3999
3519static void noinline 4000static void noinline
3520infy_add (EV_P_ ev_stat *w) 4001infy_add (EV_P_ ev_stat *w)
3521{ 4002{
3522 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4003 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4006 | IN_DONT_FOLLOW | IN_MASK_ADD);
3523 4007
3524 if (w->wd >= 0) 4008 if (w->wd >= 0)
3525 { 4009 {
3526 struct statfs sfs; 4010 struct statfs sfs;
3527 4011
… …
3531 4015
3532 if (!fs_2625) 4016 if (!fs_2625)
3533 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4017 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3534 else if (!statfs (w->path, &sfs) 4018 else if (!statfs (w->path, &sfs)
3535 && (sfs.f_type == 0x1373 /* devfs */ 4019 && (sfs.f_type == 0x1373 /* devfs */
4020 || sfs.f_type == 0x4006 /* fat */
4021 || sfs.f_type == 0x4d44 /* msdos */
3536 || sfs.f_type == 0xEF53 /* ext2/3 */ 4022 || sfs.f_type == 0xEF53 /* ext2/3 */
4023 || sfs.f_type == 0x72b6 /* jffs2 */
4024 || sfs.f_type == 0x858458f6 /* ramfs */
4025 || sfs.f_type == 0x5346544e /* ntfs */
3537 || sfs.f_type == 0x3153464a /* jfs */ 4026 || sfs.f_type == 0x3153464a /* jfs */
4027 || sfs.f_type == 0x9123683e /* btrfs */
3538 || sfs.f_type == 0x52654973 /* reiser3 */ 4028 || sfs.f_type == 0x52654973 /* reiser3 */
3539 || sfs.f_type == 0x01021994 /* tempfs */ 4029 || sfs.f_type == 0x01021994 /* tmpfs */
3540 || sfs.f_type == 0x58465342 /* xfs */)) 4030 || sfs.f_type == 0x58465342 /* xfs */))
3541 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4031 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3542 else 4032 else
3543 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4033 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3544 } 4034 }
… …
3657} 4147}
3658 4148
3659inline_size int 4149inline_size int
3660infy_newfd (void) 4150infy_newfd (void)
3661{ 4151{
3662#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4152#if defined IN_CLOEXEC && defined IN_NONBLOCK
3663 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4153 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3664 if (fd >= 0) 4154 if (fd >= 0)
3665 return fd; 4155 return fd;
3666#endif 4156#endif
3667 return inotify_init (); 4157 return inotify_init ();
… …
3742#else 4232#else
3743# define EV_LSTAT(p,b) lstat (p, b) 4233# define EV_LSTAT(p,b) lstat (p, b)
3744#endif 4234#endif
3745 4235
3746void 4236void
3747ev_stat_stat (EV_P_ ev_stat *w) 4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3748{ 4238{
3749 if (lstat (w->path, &w->attr) < 0) 4239 if (lstat (w->path, &w->attr) < 0)
3750 w->attr.st_nlink = 0; 4240 w->attr.st_nlink = 0;
3751 else if (!w->attr.st_nlink) 4241 else if (!w->attr.st_nlink)
3752 w->attr.st_nlink = 1; 4242 w->attr.st_nlink = 1;
… …
3791 ev_feed_event (EV_A_ w, EV_STAT); 4281 ev_feed_event (EV_A_ w, EV_STAT);
3792 } 4282 }
3793} 4283}
3794 4284
3795void 4285void
3796ev_stat_start (EV_P_ ev_stat *w) 4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3797{ 4287{
3798 if (expect_false (ev_is_active (w))) 4288 if (expect_false (ev_is_active (w)))
3799 return; 4289 return;
3800 4290
3801 ev_stat_stat (EV_A_ w); 4291 ev_stat_stat (EV_A_ w);
… …
3822 4312
3823 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
3824} 4314}
3825 4315
3826void 4316void
3827ev_stat_stop (EV_P_ ev_stat *w) 4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3828{ 4318{
3829 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
3830 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
3831 return; 4321 return;
3832 4322
… …
3848} 4338}
3849#endif 4339#endif
3850 4340
3851#if EV_IDLE_ENABLE 4341#if EV_IDLE_ENABLE
3852void 4342void
3853ev_idle_start (EV_P_ ev_idle *w) 4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3854{ 4344{
3855 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3856 return; 4346 return;
3857 4347
3858 pri_adjust (EV_A_ (W)w); 4348 pri_adjust (EV_A_ (W)w);
… …
3871 4361
3872 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
3873} 4363}
3874 4364
3875void 4365void
3876ev_idle_stop (EV_P_ ev_idle *w) 4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3877{ 4367{
3878 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3879 if (expect_false (!ev_is_active (w))) 4369 if (expect_false (!ev_is_active (w)))
3880 return; 4370 return;
3881 4371
… …
3895} 4385}
3896#endif 4386#endif
3897 4387
3898#if EV_PREPARE_ENABLE 4388#if EV_PREPARE_ENABLE
3899void 4389void
3900ev_prepare_start (EV_P_ ev_prepare *w) 4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3901{ 4391{
3902 if (expect_false (ev_is_active (w))) 4392 if (expect_false (ev_is_active (w)))
3903 return; 4393 return;
3904 4394
3905 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
… …
3910 4400
3911 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3912} 4402}
3913 4403
3914void 4404void
3915ev_prepare_stop (EV_P_ ev_prepare *w) 4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3916{ 4406{
3917 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3918 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3919 return; 4409 return;
3920 4410
… …
3933} 4423}
3934#endif 4424#endif
3935 4425
3936#if EV_CHECK_ENABLE 4426#if EV_CHECK_ENABLE
3937void 4427void
3938ev_check_start (EV_P_ ev_check *w) 4428ev_check_start (EV_P_ ev_check *w) EV_THROW
3939{ 4429{
3940 if (expect_false (ev_is_active (w))) 4430 if (expect_false (ev_is_active (w)))
3941 return; 4431 return;
3942 4432
3943 EV_FREQUENT_CHECK; 4433 EV_FREQUENT_CHECK;
… …
3948 4438
3949 EV_FREQUENT_CHECK; 4439 EV_FREQUENT_CHECK;
3950} 4440}
3951 4441
3952void 4442void
3953ev_check_stop (EV_P_ ev_check *w) 4443ev_check_stop (EV_P_ ev_check *w) EV_THROW
3954{ 4444{
3955 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3956 if (expect_false (!ev_is_active (w))) 4446 if (expect_false (!ev_is_active (w)))
3957 return; 4447 return;
3958 4448
… …
3971} 4461}
3972#endif 4462#endif
3973 4463
3974#if EV_EMBED_ENABLE 4464#if EV_EMBED_ENABLE
3975void noinline 4465void noinline
3976ev_embed_sweep (EV_P_ ev_embed *w) 4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3977{ 4467{
3978 ev_run (w->other, EVRUN_NOWAIT); 4468 ev_run (w->other, EVRUN_NOWAIT);
3979} 4469}
3980 4470
3981static void 4471static void
… …
4029 ev_idle_stop (EV_A_ idle); 4519 ev_idle_stop (EV_A_ idle);
4030} 4520}
4031#endif 4521#endif
4032 4522
4033void 4523void
4034ev_embed_start (EV_P_ ev_embed *w) 4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4035{ 4525{
4036 if (expect_false (ev_is_active (w))) 4526 if (expect_false (ev_is_active (w)))
4037 return; 4527 return;
4038 4528
4039 { 4529 {
… …
4060 4550
4061 EV_FREQUENT_CHECK; 4551 EV_FREQUENT_CHECK;
4062} 4552}
4063 4553
4064void 4554void
4065ev_embed_stop (EV_P_ ev_embed *w) 4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4066{ 4556{
4067 clear_pending (EV_A_ (W)w); 4557 clear_pending (EV_A_ (W)w);
4068 if (expect_false (!ev_is_active (w))) 4558 if (expect_false (!ev_is_active (w)))
4069 return; 4559 return;
4070 4560
… …
4080} 4570}
4081#endif 4571#endif
4082 4572
4083#if EV_FORK_ENABLE 4573#if EV_FORK_ENABLE
4084void 4574void
4085ev_fork_start (EV_P_ ev_fork *w) 4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4086{ 4576{
4087 if (expect_false (ev_is_active (w))) 4577 if (expect_false (ev_is_active (w)))
4088 return; 4578 return;
4089 4579
4090 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
… …
4095 4585
4096 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
4097} 4587}
4098 4588
4099void 4589void
4100ev_fork_stop (EV_P_ ev_fork *w) 4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4101{ 4591{
4102 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
4103 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
4104 return; 4594 return;
4105 4595
… …
4118} 4608}
4119#endif 4609#endif
4120 4610
4121#if EV_CLEANUP_ENABLE 4611#if EV_CLEANUP_ENABLE
4122void 4612void
4123ev_cleanup_start (EV_P_ ev_cleanup *w) 4613ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4124{ 4614{
4125 if (expect_false (ev_is_active (w))) 4615 if (expect_false (ev_is_active (w)))
4126 return; 4616 return;
4127 4617
4128 EV_FREQUENT_CHECK; 4618 EV_FREQUENT_CHECK;
… …
4135 ev_unref (EV_A); 4625 ev_unref (EV_A);
4136 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
4137} 4627}
4138 4628
4139void 4629void
4140ev_cleanup_stop (EV_P_ ev_cleanup *w) 4630ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4141{ 4631{
4142 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
4143 if (expect_false (!ev_is_active (w))) 4633 if (expect_false (!ev_is_active (w)))
4144 return; 4634 return;
4145 4635
… …
4159} 4649}
4160#endif 4650#endif
4161 4651
4162#if EV_ASYNC_ENABLE 4652#if EV_ASYNC_ENABLE
4163void 4653void
4164ev_async_start (EV_P_ ev_async *w) 4654ev_async_start (EV_P_ ev_async *w) EV_THROW
4165{ 4655{
4166 if (expect_false (ev_is_active (w))) 4656 if (expect_false (ev_is_active (w)))
4167 return; 4657 return;
4168 4658
4169 w->sent = 0; 4659 w->sent = 0;
… …
4178 4668
4179 EV_FREQUENT_CHECK; 4669 EV_FREQUENT_CHECK;
4180} 4670}
4181 4671
4182void 4672void
4183ev_async_stop (EV_P_ ev_async *w) 4673ev_async_stop (EV_P_ ev_async *w) EV_THROW
4184{ 4674{
4185 clear_pending (EV_A_ (W)w); 4675 clear_pending (EV_A_ (W)w);
4186 if (expect_false (!ev_is_active (w))) 4676 if (expect_false (!ev_is_active (w)))
4187 return; 4677 return;
4188 4678
… …
4199 4689
4200 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
4201} 4691}
4202 4692
4203void 4693void
4204ev_async_send (EV_P_ ev_async *w) 4694ev_async_send (EV_P_ ev_async *w) EV_THROW
4205{ 4695{
4206 w->sent = 1; 4696 w->sent = 1;
4207 evpipe_write (EV_A_ &async_pending); 4697 evpipe_write (EV_A_ &async_pending);
4208} 4698}
4209#endif 4699#endif
… …
4246 4736
4247 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4737 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4248} 4738}
4249 4739
4250void 4740void
4251ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4741ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4252{ 4742{
4253 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4743 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4254 4744
4255 if (expect_false (!once)) 4745 if (expect_false (!once))
4256 { 4746 {
… …
4278 4768
4279/*****************************************************************************/ 4769/*****************************************************************************/
4280 4770
4281#if EV_WALK_ENABLE 4771#if EV_WALK_ENABLE
4282void ecb_cold 4772void ecb_cold
4283ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4773ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4284{ 4774{
4285 int i, j; 4775 int i, j;
4286 ev_watcher_list *wl, *wn; 4776 ev_watcher_list *wl, *wn;
4287 4777
4288 if (types & (EV_IO | EV_EMBED)) 4778 if (types & (EV_IO | EV_EMBED))
… …
4394 4884
4395#if EV_MULTIPLICITY 4885#if EV_MULTIPLICITY
4396 #include "ev_wrap.h" 4886 #include "ev_wrap.h"
4397#endif 4887#endif
4398 4888
4399EV_CPP(})
4400

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