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Comparing libev/ev.c (file contents):
Revision 1.398 by root, Sun Sep 25 21:27:35 2011 UTC vs.
Revision 1.471 by root, Tue Sep 9 12:41:56 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
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
254#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 273# else
258# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
259# endif 275# endif
260#endif 276#endif
347 363
348#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 366#endif
351 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* 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. */ 385/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 387# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
360# else 392# else
363# endif 395# endif
364#endif 396#endif
365 397
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 399
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 400#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
377#endif 403#endif
378 404
386# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
387#endif 413#endif
388 414
389#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 417# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 418# include <sys/select.h>
393# endif 419# endif
394#endif 420#endif
395 421
396#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
403# endif 429# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 430#endif
409 431
410#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 434# include <stdint.h>
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
471/* 493/*
472 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
473 * 495 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 498 * All rights reserved.
477 * 499 *
478 * Redistribution and use in source and binary forms, with or without modifica- 500 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * 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 518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
498 */ 531 */
499 532
500#ifndef ECB_H 533#ifndef ECB_H
501#define ECB_H 534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003
502 538
503#ifdef _WIN32 539#ifdef _WIN32
504 typedef signed char int8_t; 540 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 542 typedef signed short int16_t;
512 typedef unsigned long long uint64_t; 548 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 549 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 550 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 551 typedef unsigned __int64 uint64_t;
516 #endif 552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
517#else 562#else
518 #include <inttypes.h> 563 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
573 #if _ILP32
574 #define ECB_AMD64_X32 1
575 #else
576 #define ECB_AMD64 1
577 #endif
519#endif 578#endif
520 579
521/* many compilers define _GNUC_ to some versions but then only implement 580/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 581 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 582 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 583 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 584 * 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. 585 * an issue with that they should have done it right in the first place.
527 */ 586 */
528#ifndef ECB_GCC_VERSION 587#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 588 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 589 #define ECB_GCC_VERSION(major,minor) 0
531 #else 590 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 591 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 592 #endif
534#endif 593#endif
535 594
595#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L)
597
598#if ECB_CPP
599 #define ECB_C 0
600 #define ECB_STDC_VERSION 0
601#else
602 #define ECB_C 1
603 #define ECB_STDC_VERSION __STDC_VERSION__
604#endif
605
606#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
607#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
608
609#if ECB_CPP
610 #define ECB_EXTERN_C extern "C"
611 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
612 #define ECB_EXTERN_C_END }
613#else
614 #define ECB_EXTERN_C extern
615 #define ECB_EXTERN_C_BEG
616 #define ECB_EXTERN_C_END
617#endif
618
536/*****************************************************************************/ 619/*****************************************************************************/
537 620
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 621/* 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 */ 622/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 623
541#if ECB_NO_THREADS || ECB_NO_SMP 624#if ECB_NO_THREADS
625 #define ECB_NO_SMP 1
626#endif
627
628#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 629 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 630#endif
544 631
545#ifndef ECB_MEMORY_FENCE 632#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 633 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
547 #if __i386__ 634 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
551 #elif __amd64 638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 646 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8
653 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
658 #elif defined __mips__
659 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
660 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
662 #elif defined __alpha__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
664 #elif defined __hppa__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
667 #elif defined __ia64__
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
669 #elif defined __m68k__
670 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
671 #elif defined __m88k__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
673 #elif defined __sh__
674 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
563 #endif 675 #endif
564 #endif 676 #endif
565#endif 677#endif
566 678
567#ifndef ECB_MEMORY_FENCE 679#ifndef ECB_MEMORY_FENCE
680 #if ECB_GCC_VERSION(4,7)
681 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
685
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model.
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */
696
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 698 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 699 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 700 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
701 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
702 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
703 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
704 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 705 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 706 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 707 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 708 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 709 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 710 #elif defined _WIN32
578 #include <WinNT.h> 711 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 712 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
713 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
714 #include <mbarrier.h>
715 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
716 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
717 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
718 #elif __xlC__
719 #define ECB_MEMORY_FENCE __sync ()
720 #endif
721#endif
722
723#ifndef ECB_MEMORY_FENCE
724 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
725 /* we assume that these memory fences work on all variables/all memory accesses, */
726 /* not just C11 atomics and atomic accesses */
727 #include <stdatomic.h>
728 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
729 /* any fence other than seq_cst, which isn't very efficient for us. */
730 /* Why that is, we don't know - either the C11 memory model is quite useless */
731 /* for most usages, or gcc and clang have a bug */
732 /* I *currently* lean towards the latter, and inefficiently implement */
733 /* all three of ecb's fences as a seq_cst fence */
734 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
735 /* for all __atomic_thread_fence's except seq_cst */
736 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
580 #endif 737 #endif
581#endif 738#endif
582 739
583#ifndef ECB_MEMORY_FENCE 740#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 741 #if !ECB_AVOID_PTHREADS
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 753 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 754 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 755 #endif
599#endif 756#endif
600 757
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 758#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 759 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 760#endif
604 761
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 762#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 764#endif
608 765
609/*****************************************************************************/ 766/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612 767
613#if __cplusplus 768#if __cplusplus
614 #define ecb_inline static inline 769 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 770#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 771 #define ecb_inline static __inline__
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 797 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 800#else
646 #define ecb_attribute(attrlist) 801 #define ecb_attribute(attrlist)
802
803 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
806
647 #define ecb_is_constant(expr) 0 807 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr) 808 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 809 #define ecb_prefetch(addr,rw,locality)
650#endif 810#endif
651 811
654 #define ecb_decltype(x) __decltype(x) 814 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0) 815#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x) 816 #define ecb_decltype(x) __typeof(x)
657#endif 817#endif
658 818
819#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated)
821#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif
824
659#define ecb_noinline ecb_attribute ((__noinline__)) 825#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__)) 826#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 827#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 828#define ecb_pure ecb_attribute ((__pure__))
829
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
831#if ECB_C11
832 #define ecb_noreturn _Noreturn
833#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif
664 836
665#if ECB_GCC_VERSION(4,3) 837#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 838 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 839 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 840 #define ecb_cold ecb_attribute ((__cold__))
759 931
760 return r + ecb_ld32 (x); 932 return r + ecb_ld32 (x);
761 } 933 }
762#endif 934#endif
763 935
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
937ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
939ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
940
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
943{
944 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946}
947
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
950{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8);
955
956 return x;
957}
958
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
961{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
966 x = ( x >> 16 ) | ( x << 16);
967
968 return x;
969}
970
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 971/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 972/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int 974ecb_function_ int
768ecb_popcount64 (uint64_t x) 975ecb_popcount64 (uint64_t x)
817 1024
818#if ECB_GCC_VERSION(4,5) 1025#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable () 1026 #define ecb_unreachable() __builtin_unreachable ()
820#else 1027#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1028 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1029 ecb_inline void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { } 1030 ecb_inline void ecb_unreachable (void) { }
824#endif 1031#endif
825 1032
826/* try to tell the compiler that some condition is definitely true */ 1033/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1035
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char 1037ecb_inline unsigned char
831ecb_byteorder_helper (void) 1038ecb_byteorder_helper (void)
832{ 1039{
833 const uint32_t u = 0x11223344; 1040 /* the union code still generates code under pressure in gcc, */
834 return *(unsigned char *)&u; 1041 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */
1044 /* is to avoid it in all cases, at least on common architectures */
1045 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1049 return 0x44;
1050#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1051 return 0x11;
1052#else
1053 union
1054 {
1055 uint32_t i;
1056 uint8_t c;
1057 } u = { 0x11223344 };
1058 return u.c;
1059#endif
835} 1060}
836 1061
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1063ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1065ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841 1066
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1067#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1068 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 1069#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1070 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
870 } 1095 }
871#else 1096#else
872 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
873#endif 1098#endif
874 1099
1100/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102
1103/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \
1106 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \
1111 || defined __alpha__ \
1112 || defined __hppa__ \
1113 || defined __ia64__ \
1114 || defined __m68k__ \
1115 || defined __m88k__ \
1116 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1118 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1119 || defined __aarch64__
1120 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */
1122#else
1123 #define ECB_STDFP 0
1124#endif
1125
1126#ifndef ECB_NO_LIBM
1127
1128 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1129
1130 /* only the oldest of old doesn't have this one. solaris. */
1131 #ifdef INFINITY
1132 #define ECB_INFINITY INFINITY
1133 #else
1134 #define ECB_INFINITY HUGE_VAL
1135 #endif
1136
1137 #ifdef NAN
1138 #define ECB_NAN NAN
1139 #else
1140 #define ECB_NAN ECB_INFINITY
1141 #endif
1142
1143 /* converts an ieee half/binary16 to a float */
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1145 ecb_function_ float
1146 ecb_binary16_to_float (uint16_t x)
1147 {
1148 int e = (x >> 10) & 0x1f;
1149 int m = x & 0x3ff;
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159
1160 /* convert a float to ieee single/binary32 */
1161 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1162 ecb_function_ uint32_t
1163 ecb_float_to_binary32 (float x)
1164 {
1165 uint32_t r;
1166
1167 #if ECB_STDFP
1168 memcpy (&r, &x, 4);
1169 #else
1170 /* slow emulation, works for anything but -0 */
1171 uint32_t m;
1172 int e;
1173
1174 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU;
1178
1179 m = frexpf (x, &e) * 0x1000000U;
1180
1181 r = m & 0x80000000U;
1182
1183 if (r)
1184 m = -m;
1185
1186 if (e <= -126)
1187 {
1188 m &= 0xffffffU;
1189 m >>= (-125 - e);
1190 e = -126;
1191 }
1192
1193 r |= (e + 126) << 23;
1194 r |= m & 0x7fffffU;
1195 #endif
1196
1197 return r;
1198 }
1199
1200 /* converts an ieee single/binary32 to a float */
1201 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1202 ecb_function_ float
1203 ecb_binary32_to_float (uint32_t x)
1204 {
1205 float r;
1206
1207 #if ECB_STDFP
1208 memcpy (&r, &x, 4);
1209 #else
1210 /* emulation, only works for normals and subnormals and +0 */
1211 int neg = x >> 31;
1212 int e = (x >> 23) & 0xffU;
1213
1214 x &= 0x7fffffU;
1215
1216 if (e)
1217 x |= 0x800000U;
1218 else
1219 e = 1;
1220
1221 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1223
1224 r = neg ? -r : r;
1225 #endif
1226
1227 return r;
1228 }
1229
1230 /* convert a double to ieee double/binary64 */
1231 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1232 ecb_function_ uint64_t
1233 ecb_double_to_binary64 (double x)
1234 {
1235 uint64_t r;
1236
1237 #if ECB_STDFP
1238 memcpy (&r, &x, 8);
1239 #else
1240 /* slow emulation, works for anything but -0 */
1241 uint64_t m;
1242 int e;
1243
1244 if (x == 0e0 ) return 0x0000000000000000U;
1245 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1246 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1247 if (x != x ) return 0X7ff7ffffffffffffU;
1248
1249 m = frexp (x, &e) * 0x20000000000000U;
1250
1251 r = m & 0x8000000000000000;;
1252
1253 if (r)
1254 m = -m;
1255
1256 if (e <= -1022)
1257 {
1258 m &= 0x1fffffffffffffU;
1259 m >>= (-1021 - e);
1260 e = -1022;
1261 }
1262
1263 r |= ((uint64_t)(e + 1022)) << 52;
1264 r |= m & 0xfffffffffffffU;
1265 #endif
1266
1267 return r;
1268 }
1269
1270 /* converts an ieee double/binary64 to a double */
1271 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1272 ecb_function_ double
1273 ecb_binary64_to_double (uint64_t x)
1274 {
1275 double r;
1276
1277 #if ECB_STDFP
1278 memcpy (&r, &x, 8);
1279 #else
1280 /* emulation, only works for normals and subnormals and +0 */
1281 int neg = x >> 63;
1282 int e = (x >> 52) & 0x7ffU;
1283
1284 x &= 0xfffffffffffffU;
1285
1286 if (e)
1287 x |= 0x10000000000000U;
1288 else
1289 e = 1;
1290
1291 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1292 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1293
1294 r = neg ? -r : r;
1295 #endif
1296
1297 return r;
1298 }
1299
1300#endif
1301
875#endif 1302#endif
876 1303
877/* ECB.H END */ 1304/* ECB.H END */
878 1305
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is 1307/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev 1308 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1309 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
883 * libev, in which casess the memory fences become nops. 1310 * libev, in which cases the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread, 1311 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences. 1312 * which will then provide the memory fences.
886 */ 1313 */
887# error "memory fences not defined for your architecture, please report" 1314# error "memory fences not defined for your architecture, please report"
888#endif 1315#endif
1045{ 1472{
1046 write (STDERR_FILENO, msg, strlen (msg)); 1473 write (STDERR_FILENO, msg, strlen (msg));
1047} 1474}
1048#endif 1475#endif
1049 1476
1050static void (*syserr_cb)(const char *msg); 1477static void (*syserr_cb)(const char *msg) EV_THROW;
1051 1478
1052void ecb_cold 1479void ecb_cold
1053ev_set_syserr_cb (void (*cb)(const char *msg)) 1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1054{ 1481{
1055 syserr_cb = cb; 1482 syserr_cb = cb;
1056} 1483}
1057 1484
1058static void noinline ecb_cold 1485static void noinline ecb_cold
1076 abort (); 1503 abort ();
1077 } 1504 }
1078} 1505}
1079 1506
1080static void * 1507static void *
1081ev_realloc_emul (void *ptr, long size) 1508ev_realloc_emul (void *ptr, long size) EV_THROW
1082{ 1509{
1083#if __GLIBC__
1084 return realloc (ptr, size);
1085#else
1086 /* some systems, notably openbsd and darwin, fail to properly 1510 /* some systems, notably openbsd and darwin, fail to properly
1087 * implement realloc (x, 0) (as required by both ansi c-89 and 1511 * implement realloc (x, 0) (as required by both ansi c-89 and
1088 * the single unix specification, so work around them here. 1512 * the single unix specification, so work around them here.
1513 * recently, also (at least) fedora and debian started breaking it,
1514 * despite documenting it otherwise.
1089 */ 1515 */
1090 1516
1091 if (size) 1517 if (size)
1092 return realloc (ptr, size); 1518 return realloc (ptr, size);
1093 1519
1094 free (ptr); 1520 free (ptr);
1095 return 0; 1521 return 0;
1096#endif
1097} 1522}
1098 1523
1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1100 1525
1101void ecb_cold 1526void ecb_cold
1102ev_set_allocator (void *(*cb)(void *ptr, long size)) 1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1103{ 1528{
1104 alloc = cb; 1529 alloc = cb;
1105} 1530}
1106 1531
1107inline_speed void * 1532inline_speed void *
1195 #undef VAR 1620 #undef VAR
1196 }; 1621 };
1197 #include "ev_wrap.h" 1622 #include "ev_wrap.h"
1198 1623
1199 static struct ev_loop default_loop_struct; 1624 static struct ev_loop default_loop_struct;
1200 struct ev_loop *ev_default_loop_ptr; 1625 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1201 1626
1202#else 1627#else
1203 1628
1204 ev_tstamp ev_rt_now; 1629 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1205 #define VAR(name,decl) static decl; 1630 #define VAR(name,decl) static decl;
1206 #include "ev_vars.h" 1631 #include "ev_vars.h"
1207 #undef VAR 1632 #undef VAR
1208 1633
1209 static int ev_default_loop_ptr; 1634 static int ev_default_loop_ptr;
1224 1649
1225/*****************************************************************************/ 1650/*****************************************************************************/
1226 1651
1227#ifndef EV_HAVE_EV_TIME 1652#ifndef EV_HAVE_EV_TIME
1228ev_tstamp 1653ev_tstamp
1229ev_time (void) 1654ev_time (void) EV_THROW
1230{ 1655{
1231#if EV_USE_REALTIME 1656#if EV_USE_REALTIME
1232 if (expect_true (have_realtime)) 1657 if (expect_true (have_realtime))
1233 { 1658 {
1234 struct timespec ts; 1659 struct timespec ts;
1258 return ev_time (); 1683 return ev_time ();
1259} 1684}
1260 1685
1261#if EV_MULTIPLICITY 1686#if EV_MULTIPLICITY
1262ev_tstamp 1687ev_tstamp
1263ev_now (EV_P) 1688ev_now (EV_P) EV_THROW
1264{ 1689{
1265 return ev_rt_now; 1690 return ev_rt_now;
1266} 1691}
1267#endif 1692#endif
1268 1693
1269void 1694void
1270ev_sleep (ev_tstamp delay) 1695ev_sleep (ev_tstamp delay) EV_THROW
1271{ 1696{
1272 if (delay > 0.) 1697 if (delay > 0.)
1273 { 1698 {
1274#if EV_USE_NANOSLEEP 1699#if EV_USE_NANOSLEEP
1275 struct timespec ts; 1700 struct timespec ts;
1276 1701
1277 EV_TS_SET (ts, delay); 1702 EV_TS_SET (ts, delay);
1278 nanosleep (&ts, 0); 1703 nanosleep (&ts, 0);
1279#elif defined(_WIN32) 1704#elif defined _WIN32
1280 Sleep ((unsigned long)(delay * 1e3)); 1705 Sleep ((unsigned long)(delay * 1e3));
1281#else 1706#else
1282 struct timeval tv; 1707 struct timeval tv;
1283 1708
1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1303 1728
1304 do 1729 do
1305 ncur <<= 1; 1730 ncur <<= 1;
1306 while (cnt > ncur); 1731 while (cnt > ncur);
1307 1732
1308 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1733 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1309 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1734 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1310 { 1735 {
1311 ncur *= elem; 1736 ncur *= elem;
1312 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1737 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1313 ncur = ncur - sizeof (void *) * 4; 1738 ncur = ncur - sizeof (void *) * 4;
1356pendingcb (EV_P_ ev_prepare *w, int revents) 1781pendingcb (EV_P_ ev_prepare *w, int revents)
1357{ 1782{
1358} 1783}
1359 1784
1360void noinline 1785void noinline
1361ev_feed_event (EV_P_ void *w, int revents) 1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1362{ 1787{
1363 W w_ = (W)w; 1788 W w_ = (W)w;
1364 int pri = ABSPRI (w_); 1789 int pri = ABSPRI (w_);
1365 1790
1366 if (expect_false (w_->pending)) 1791 if (expect_false (w_->pending))
1370 w_->pending = ++pendingcnt [pri]; 1795 w_->pending = ++pendingcnt [pri];
1371 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1372 pendings [pri][w_->pending - 1].w = w_; 1797 pendings [pri][w_->pending - 1].w = w_;
1373 pendings [pri][w_->pending - 1].events = revents; 1798 pendings [pri][w_->pending - 1].events = revents;
1374 } 1799 }
1800
1801 pendingpri = NUMPRI - 1;
1375} 1802}
1376 1803
1377inline_speed void 1804inline_speed void
1378feed_reverse (EV_P_ W w) 1805feed_reverse (EV_P_ W w)
1379{ 1806{
1425 if (expect_true (!anfd->reify)) 1852 if (expect_true (!anfd->reify))
1426 fd_event_nocheck (EV_A_ fd, revents); 1853 fd_event_nocheck (EV_A_ fd, revents);
1427} 1854}
1428 1855
1429void 1856void
1430ev_feed_fd_event (EV_P_ int fd, int revents) 1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1431{ 1858{
1432 if (fd >= 0 && fd < anfdmax) 1859 if (fd >= 0 && fd < anfdmax)
1433 fd_event_nocheck (EV_A_ fd, revents); 1860 fd_event_nocheck (EV_A_ fd, revents);
1434} 1861}
1435 1862
1754static void noinline ecb_cold 2181static void noinline ecb_cold
1755evpipe_init (EV_P) 2182evpipe_init (EV_P)
1756{ 2183{
1757 if (!ev_is_active (&pipe_w)) 2184 if (!ev_is_active (&pipe_w))
1758 { 2185 {
2186 int fds [2];
2187
1759# if EV_USE_EVENTFD 2188# if EV_USE_EVENTFD
2189 fds [0] = -1;
1760 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2190 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1761 if (evfd < 0 && errno == EINVAL) 2191 if (fds [1] < 0 && errno == EINVAL)
1762 evfd = eventfd (0, 0); 2192 fds [1] = eventfd (0, 0);
1763 2193
1764 if (evfd >= 0) 2194 if (fds [1] < 0)
2195# endif
1765 { 2196 {
2197 while (pipe (fds))
2198 ev_syserr ("(libev) error creating signal/async pipe");
2199
2200 fd_intern (fds [0]);
2201 }
2202
1766 evpipe [0] = -1; 2203 evpipe [0] = fds [0];
1767 fd_intern (evfd); /* doing it twice doesn't hurt */ 2204
1768 ev_io_set (&pipe_w, evfd, EV_READ); 2205 if (evpipe [1] < 0)
2206 evpipe [1] = fds [1]; /* first call, set write fd */
2207 else
2208 {
2209 /* on subsequent calls, do not change evpipe [1] */
2210 /* so that evpipe_write can always rely on its value. */
2211 /* this branch does not do anything sensible on windows, */
2212 /* so must not be executed on windows */
2213
2214 dup2 (fds [1], evpipe [1]);
2215 close (fds [1]);
2216 }
2217
2218 fd_intern (evpipe [1]);
2219
2220 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2221 ev_io_start (EV_A_ &pipe_w);
2222 ev_unref (EV_A); /* watcher should not keep loop alive */
2223 }
2224}
2225
2226inline_speed void
2227evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2228{
2229 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2230
2231 if (expect_true (*flag))
2232 return;
2233
2234 *flag = 1;
2235 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2236
2237 pipe_write_skipped = 1;
2238
2239 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2240
2241 if (pipe_write_wanted)
2242 {
2243 int old_errno;
2244
2245 pipe_write_skipped = 0;
2246 ECB_MEMORY_FENCE_RELEASE;
2247
2248 old_errno = errno; /* save errno because write will clobber it */
2249
2250#if EV_USE_EVENTFD
2251 if (evpipe [0] < 0)
2252 {
2253 uint64_t counter = 1;
2254 write (evpipe [1], &counter, sizeof (uint64_t));
1769 } 2255 }
1770 else 2256 else
1771# endif 2257#endif
1772 { 2258 {
1773 while (pipe (evpipe)) 2259#ifdef _WIN32
1774 ev_syserr ("(libev) error creating signal/async pipe"); 2260 WSABUF buf;
1775 2261 DWORD sent;
1776 fd_intern (evpipe [0]); 2262 buf.buf = &buf;
1777 fd_intern (evpipe [1]); 2263 buf.len = 1;
1778 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1779 } 2265#else
1780
1781 ev_io_start (EV_A_ &pipe_w);
1782 ev_unref (EV_A); /* watcher should not keep loop alive */
1783 }
1784}
1785
1786inline_speed void
1787evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1788{
1789 if (expect_true (*flag))
1790 return;
1791
1792 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795
1796 pipe_write_skipped = 1;
1797
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799
1800 if (pipe_write_wanted)
1801 {
1802 int old_errno;
1803
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1805
1806 old_errno = errno; /* save errno because write will clobber it */
1807
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 {
1811 uint64_t counter = 1;
1812 write (evfd, &counter, sizeof (uint64_t));
1813 }
1814 else
1815#endif
1816 {
1817 /* win32 people keep sending patches that change this write() to send() */
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1819 /* so when you think this write should be a send instead, please find out */
1820 /* where your send() is from - it's definitely not the microsoft send, and */
1821 /* tell me. thank you. */
1822 write (evpipe [1], &(evpipe [1]), 1); 2266 write (evpipe [1], &(evpipe [1]), 1);
2267#endif
1823 } 2268 }
1824 2269
1825 errno = old_errno; 2270 errno = old_errno;
1826 } 2271 }
1827} 2272}
1834 int i; 2279 int i;
1835 2280
1836 if (revents & EV_READ) 2281 if (revents & EV_READ)
1837 { 2282 {
1838#if EV_USE_EVENTFD 2283#if EV_USE_EVENTFD
1839 if (evfd >= 0) 2284 if (evpipe [0] < 0)
1840 { 2285 {
1841 uint64_t counter; 2286 uint64_t counter;
1842 read (evfd, &counter, sizeof (uint64_t)); 2287 read (evpipe [1], &counter, sizeof (uint64_t));
1843 } 2288 }
1844 else 2289 else
1845#endif 2290#endif
1846 { 2291 {
1847 char dummy; 2292 char dummy[4];
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2293#ifdef _WIN32
2294 WSABUF buf;
2295 DWORD recvd;
2296 DWORD flags = 0;
2297 buf.buf = dummy;
2298 buf.len = sizeof (dummy);
2299 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2300#else
1849 read (evpipe [0], &dummy, 1); 2301 read (evpipe [0], &dummy, sizeof (dummy));
2302#endif
1850 } 2303 }
1851 } 2304 }
1852 2305
1853 pipe_write_skipped = 0; 2306 pipe_write_skipped = 0;
2307
2308 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1854 2309
1855#if EV_SIGNAL_ENABLE 2310#if EV_SIGNAL_ENABLE
1856 if (sig_pending) 2311 if (sig_pending)
1857 { 2312 {
1858 sig_pending = 0; 2313 sig_pending = 0;
2314
2315 ECB_MEMORY_FENCE;
1859 2316
1860 for (i = EV_NSIG - 1; i--; ) 2317 for (i = EV_NSIG - 1; i--; )
1861 if (expect_false (signals [i].pending)) 2318 if (expect_false (signals [i].pending))
1862 ev_feed_signal_event (EV_A_ i + 1); 2319 ev_feed_signal_event (EV_A_ i + 1);
1863 } 2320 }
1865 2322
1866#if EV_ASYNC_ENABLE 2323#if EV_ASYNC_ENABLE
1867 if (async_pending) 2324 if (async_pending)
1868 { 2325 {
1869 async_pending = 0; 2326 async_pending = 0;
2327
2328 ECB_MEMORY_FENCE;
1870 2329
1871 for (i = asynccnt; i--; ) 2330 for (i = asynccnt; i--; )
1872 if (asyncs [i]->sent) 2331 if (asyncs [i]->sent)
1873 { 2332 {
1874 asyncs [i]->sent = 0; 2333 asyncs [i]->sent = 0;
2334 ECB_MEMORY_FENCE_RELEASE;
1875 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2335 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1876 } 2336 }
1877 } 2337 }
1878#endif 2338#endif
1879} 2339}
1880 2340
1881/*****************************************************************************/ 2341/*****************************************************************************/
1882 2342
1883void 2343void
1884ev_feed_signal (int signum) 2344ev_feed_signal (int signum) EV_THROW
1885{ 2345{
1886#if EV_MULTIPLICITY 2346#if EV_MULTIPLICITY
2347 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE;
1887 EV_P = signals [signum - 1].loop; 2349 EV_A = signals [signum - 1].loop;
1888 2350
1889 if (!EV_A) 2351 if (!EV_A)
1890 return; 2352 return;
1891#endif 2353#endif
1892 2354
1893 if (!ev_active (&pipe_w))
1894 return;
1895
1896 signals [signum - 1].pending = 1; 2355 signals [signum - 1].pending = 1;
1897 evpipe_write (EV_A_ &sig_pending); 2356 evpipe_write (EV_A_ &sig_pending);
1898} 2357}
1899 2358
1900static void 2359static void
1906 2365
1907 ev_feed_signal (signum); 2366 ev_feed_signal (signum);
1908} 2367}
1909 2368
1910void noinline 2369void noinline
1911ev_feed_signal_event (EV_P_ int signum) 2370ev_feed_signal_event (EV_P_ int signum) EV_THROW
1912{ 2371{
1913 WL w; 2372 WL w;
1914 2373
1915 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2374 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1916 return; 2375 return;
1917 2376
1918 --signum; 2377 --signum;
1919 2378
1920#if EV_MULTIPLICITY 2379#if EV_MULTIPLICITY
1924 if (expect_false (signals [signum].loop != EV_A)) 2383 if (expect_false (signals [signum].loop != EV_A))
1925 return; 2384 return;
1926#endif 2385#endif
1927 2386
1928 signals [signum].pending = 0; 2387 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE;
1929 2389
1930 for (w = signals [signum].head; w; w = w->next) 2390 for (w = signals [signum].head; w; w = w->next)
1931 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2391 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1932} 2392}
1933 2393
2032#if EV_USE_SELECT 2492#if EV_USE_SELECT
2033# include "ev_select.c" 2493# include "ev_select.c"
2034#endif 2494#endif
2035 2495
2036int ecb_cold 2496int ecb_cold
2037ev_version_major (void) 2497ev_version_major (void) EV_THROW
2038{ 2498{
2039 return EV_VERSION_MAJOR; 2499 return EV_VERSION_MAJOR;
2040} 2500}
2041 2501
2042int ecb_cold 2502int ecb_cold
2043ev_version_minor (void) 2503ev_version_minor (void) EV_THROW
2044{ 2504{
2045 return EV_VERSION_MINOR; 2505 return EV_VERSION_MINOR;
2046} 2506}
2047 2507
2048/* return true if we are running with elevated privileges and should ignore env variables */ 2508/* return true if we are running with elevated privileges and should ignore env variables */
2056 || getgid () != getegid (); 2516 || getgid () != getegid ();
2057#endif 2517#endif
2058} 2518}
2059 2519
2060unsigned int ecb_cold 2520unsigned int ecb_cold
2061ev_supported_backends (void) 2521ev_supported_backends (void) EV_THROW
2062{ 2522{
2063 unsigned int flags = 0; 2523 unsigned int flags = 0;
2064 2524
2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2066 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
2070 2530
2071 return flags; 2531 return flags;
2072} 2532}
2073 2533
2074unsigned int ecb_cold 2534unsigned int ecb_cold
2075ev_recommended_backends (void) 2535ev_recommended_backends (void) EV_THROW
2076{ 2536{
2077 unsigned int flags = ev_supported_backends (); 2537 unsigned int flags = ev_supported_backends ();
2078 2538
2079#ifndef __NetBSD__ 2539#ifndef __NetBSD__
2080 /* kqueue is borked on everything but netbsd apparently */ 2540 /* kqueue is borked on everything but netbsd apparently */
2092 2552
2093 return flags; 2553 return flags;
2094} 2554}
2095 2555
2096unsigned int ecb_cold 2556unsigned int ecb_cold
2097ev_embeddable_backends (void) 2557ev_embeddable_backends (void) EV_THROW
2098{ 2558{
2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2100 2560
2101 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2562 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2104 2564
2105 return flags; 2565 return flags;
2106} 2566}
2107 2567
2108unsigned int 2568unsigned int
2109ev_backend (EV_P) 2569ev_backend (EV_P) EV_THROW
2110{ 2570{
2111 return backend; 2571 return backend;
2112} 2572}
2113 2573
2114#if EV_FEATURE_API 2574#if EV_FEATURE_API
2115unsigned int 2575unsigned int
2116ev_iteration (EV_P) 2576ev_iteration (EV_P) EV_THROW
2117{ 2577{
2118 return loop_count; 2578 return loop_count;
2119} 2579}
2120 2580
2121unsigned int 2581unsigned int
2122ev_depth (EV_P) 2582ev_depth (EV_P) EV_THROW
2123{ 2583{
2124 return loop_depth; 2584 return loop_depth;
2125} 2585}
2126 2586
2127void 2587void
2128ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2129{ 2589{
2130 io_blocktime = interval; 2590 io_blocktime = interval;
2131} 2591}
2132 2592
2133void 2593void
2134ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2135{ 2595{
2136 timeout_blocktime = interval; 2596 timeout_blocktime = interval;
2137} 2597}
2138 2598
2139void 2599void
2140ev_set_userdata (EV_P_ void *data) 2600ev_set_userdata (EV_P_ void *data) EV_THROW
2141{ 2601{
2142 userdata = data; 2602 userdata = data;
2143} 2603}
2144 2604
2145void * 2605void *
2146ev_userdata (EV_P) 2606ev_userdata (EV_P) EV_THROW
2147{ 2607{
2148 return userdata; 2608 return userdata;
2149} 2609}
2150 2610
2151void 2611void
2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2612ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2153{ 2613{
2154 invoke_cb = invoke_pending_cb; 2614 invoke_cb = invoke_pending_cb;
2155} 2615}
2156 2616
2157void 2617void
2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2618ev_set_loop_release_cb (EV_P_ ev_loop_callback release EV_THROW, ev_loop_callback acquire EV_THROW) EV_THROW
2159{ 2619{
2160 release_cb = release; 2620 release_cb = release;
2161 acquire_cb = acquire; 2621 acquire_cb = acquire;
2162} 2622}
2163#endif 2623#endif
2164 2624
2165/* initialise a loop structure, must be zero-initialised */ 2625/* initialise a loop structure, must be zero-initialised */
2166static void noinline ecb_cold 2626static void noinline ecb_cold
2167loop_init (EV_P_ unsigned int flags) 2627loop_init (EV_P_ unsigned int flags) EV_THROW
2168{ 2628{
2169 if (!backend) 2629 if (!backend)
2170 { 2630 {
2171 origflags = flags; 2631 origflags = flags;
2172 2632
2217#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
2218 async_pending = 0; 2678 async_pending = 0;
2219#endif 2679#endif
2220 pipe_write_skipped = 0; 2680 pipe_write_skipped = 0;
2221 pipe_write_wanted = 0; 2681 pipe_write_wanted = 0;
2682 evpipe [0] = -1;
2683 evpipe [1] = -1;
2222#if EV_USE_INOTIFY 2684#if EV_USE_INOTIFY
2223 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2685 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2224#endif 2686#endif
2225#if EV_USE_SIGNALFD 2687#if EV_USE_SIGNALFD
2226 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2688 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2277 EV_INVOKE_PENDING; 2739 EV_INVOKE_PENDING;
2278 } 2740 }
2279#endif 2741#endif
2280 2742
2281#if EV_CHILD_ENABLE 2743#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev)) 2744 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2283 { 2745 {
2284 ev_ref (EV_A); /* child watcher */ 2746 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev); 2747 ev_signal_stop (EV_A_ &childev);
2286 } 2748 }
2287#endif 2749#endif
2289 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
2290 { 2752 {
2291 /*ev_ref (EV_A);*/ 2753 /*ev_ref (EV_A);*/
2292 /*ev_io_stop (EV_A_ &pipe_w);*/ 2754 /*ev_io_stop (EV_A_ &pipe_w);*/
2293 2755
2294#if EV_USE_EVENTFD
2295 if (evfd >= 0)
2296 close (evfd);
2297#endif
2298
2299 if (evpipe [0] >= 0)
2300 {
2301 EV_WIN32_CLOSE_FD (evpipe [0]); 2756 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2302 EV_WIN32_CLOSE_FD (evpipe [1]); 2757 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2303 }
2304 } 2758 }
2305 2759
2306#if EV_USE_SIGNALFD 2760#if EV_USE_SIGNALFD
2307 if (ev_is_active (&sigfd_w)) 2761 if (ev_is_active (&sigfd_w))
2308 close (sigfd); 2762 close (sigfd);
2394#endif 2848#endif
2395#if EV_USE_INOTIFY 2849#if EV_USE_INOTIFY
2396 infy_fork (EV_A); 2850 infy_fork (EV_A);
2397#endif 2851#endif
2398 2852
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2399 if (ev_is_active (&pipe_w)) 2854 if (ev_is_active (&pipe_w))
2400 { 2855 {
2401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2402 2857
2403 ev_ref (EV_A); 2858 ev_ref (EV_A);
2404 ev_io_stop (EV_A_ &pipe_w); 2859 ev_io_stop (EV_A_ &pipe_w);
2405 2860
2406#if EV_USE_EVENTFD
2407 if (evfd >= 0)
2408 close (evfd);
2409#endif
2410
2411 if (evpipe [0] >= 0) 2861 if (evpipe [0] >= 0)
2412 {
2413 EV_WIN32_CLOSE_FD (evpipe [0]); 2862 EV_WIN32_CLOSE_FD (evpipe [0]);
2414 EV_WIN32_CLOSE_FD (evpipe [1]);
2415 }
2416 2863
2417#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2418 evpipe_init (EV_A); 2864 evpipe_init (EV_A);
2419 /* now iterate over everything, in case we missed something */ 2865 /* iterate over everything, in case we missed something before */
2420 pipecb (EV_A_ &pipe_w, EV_READ); 2866 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2421#endif
2422 } 2867 }
2868#endif
2423 2869
2424 postfork = 0; 2870 postfork = 0;
2425} 2871}
2426 2872
2427#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
2428 2874
2429struct ev_loop * ecb_cold 2875struct ev_loop * ecb_cold
2430ev_loop_new (unsigned int flags) 2876ev_loop_new (unsigned int flags) EV_THROW
2431{ 2877{
2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2433 2879
2434 memset (EV_A, 0, sizeof (struct ev_loop)); 2880 memset (EV_A, 0, sizeof (struct ev_loop));
2435 loop_init (EV_A_ flags); 2881 loop_init (EV_A_ flags);
2479} 2925}
2480#endif 2926#endif
2481 2927
2482#if EV_FEATURE_API 2928#if EV_FEATURE_API
2483void ecb_cold 2929void ecb_cold
2484ev_verify (EV_P) 2930ev_verify (EV_P) EV_THROW
2485{ 2931{
2486#if EV_VERIFY 2932#if EV_VERIFY
2487 int i; 2933 int i;
2488 WL w; 2934 WL w, w2;
2489 2935
2490 assert (activecnt >= -1); 2936 assert (activecnt >= -1);
2491 2937
2492 assert (fdchangemax >= fdchangecnt); 2938 assert (fdchangemax >= fdchangecnt);
2493 for (i = 0; i < fdchangecnt; ++i) 2939 for (i = 0; i < fdchangecnt; ++i)
2494 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2940 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2495 2941
2496 assert (anfdmax >= 0); 2942 assert (anfdmax >= 0);
2497 for (i = 0; i < anfdmax; ++i) 2943 for (i = 0; i < anfdmax; ++i)
2944 {
2945 int j = 0;
2946
2498 for (w = anfds [i].head; w; w = w->next) 2947 for (w = w2 = anfds [i].head; w; w = w->next)
2499 { 2948 {
2500 verify_watcher (EV_A_ (W)w); 2949 verify_watcher (EV_A_ (W)w);
2950
2951 if (j++ & 1)
2952 {
2953 assert (("libev: io watcher list contains a loop", w != w2));
2954 w2 = w2->next;
2955 }
2956
2501 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2502 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2503 } 2959 }
2960 }
2504 2961
2505 assert (timermax >= timercnt); 2962 assert (timermax >= timercnt);
2506 verify_heap (EV_A_ timers, timercnt); 2963 verify_heap (EV_A_ timers, timercnt);
2507 2964
2508#if EV_PERIODIC_ENABLE 2965#if EV_PERIODIC_ENABLE
2558#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
2559struct ev_loop * ecb_cold 3016struct ev_loop * ecb_cold
2560#else 3017#else
2561int 3018int
2562#endif 3019#endif
2563ev_default_loop (unsigned int flags) 3020ev_default_loop (unsigned int flags) EV_THROW
2564{ 3021{
2565 if (!ev_default_loop_ptr) 3022 if (!ev_default_loop_ptr)
2566 { 3023 {
2567#if EV_MULTIPLICITY 3024#if EV_MULTIPLICITY
2568 EV_P = ev_default_loop_ptr = &default_loop_struct; 3025 EV_P = ev_default_loop_ptr = &default_loop_struct;
2587 3044
2588 return ev_default_loop_ptr; 3045 return ev_default_loop_ptr;
2589} 3046}
2590 3047
2591void 3048void
2592ev_loop_fork (EV_P) 3049ev_loop_fork (EV_P) EV_THROW
2593{ 3050{
2594 postfork = 1; /* must be in line with ev_default_fork */ 3051 postfork = 1;
2595} 3052}
2596 3053
2597/*****************************************************************************/ 3054/*****************************************************************************/
2598 3055
2599void 3056void
2601{ 3058{
2602 EV_CB_INVOKE ((W)w, revents); 3059 EV_CB_INVOKE ((W)w, revents);
2603} 3060}
2604 3061
2605unsigned int 3062unsigned int
2606ev_pending_count (EV_P) 3063ev_pending_count (EV_P) EV_THROW
2607{ 3064{
2608 int pri; 3065 int pri;
2609 unsigned int count = 0; 3066 unsigned int count = 0;
2610 3067
2611 for (pri = NUMPRI; pri--; ) 3068 for (pri = NUMPRI; pri--; )
2615} 3072}
2616 3073
2617void noinline 3074void noinline
2618ev_invoke_pending (EV_P) 3075ev_invoke_pending (EV_P)
2619{ 3076{
2620 int pri; 3077 pendingpri = NUMPRI;
2621 3078
2622 for (pri = NUMPRI; pri--; ) 3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3080 {
3081 --pendingpri;
3082
2623 while (pendingcnt [pri]) 3083 while (pendingcnt [pendingpri])
2624 { 3084 {
2625 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2626 3086
2627 p->w->pending = 0; 3087 p->w->pending = 0;
2628 EV_CB_INVOKE (p->w, p->events); 3088 EV_CB_INVOKE (p->w, p->events);
2629 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
2630 } 3090 }
3091 }
2631} 3092}
2632 3093
2633#if EV_IDLE_ENABLE 3094#if EV_IDLE_ENABLE
2634/* make idle watchers pending. this handles the "call-idle */ 3095/* make idle watchers pending. this handles the "call-idle */
2635/* only when higher priorities are idle" logic */ 3096/* only when higher priorities are idle" logic */
2725{ 3186{
2726 EV_FREQUENT_CHECK; 3187 EV_FREQUENT_CHECK;
2727 3188
2728 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3189 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2729 { 3190 {
2730 int feed_count = 0;
2731
2732 do 3191 do
2733 { 3192 {
2734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2735 3194
2736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3195 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2870 3329
2871 mn_now = ev_rt_now; 3330 mn_now = ev_rt_now;
2872 } 3331 }
2873} 3332}
2874 3333
2875void 3334int
2876ev_run (EV_P_ int flags) 3335ev_run (EV_P_ int flags)
2877{ 3336{
2878#if EV_FEATURE_API 3337#if EV_FEATURE_API
2879 ++loop_depth; 3338 ++loop_depth;
2880#endif 3339#endif
2993#endif 3452#endif
2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3453 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2995 backend_poll (EV_A_ waittime); 3454 backend_poll (EV_A_ waittime);
2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3455 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997 3456
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3457 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2999 3458
3459 ECB_MEMORY_FENCE_ACQUIRE;
3000 if (pipe_write_skipped) 3460 if (pipe_write_skipped)
3001 { 3461 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3462 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 } 3464 }
3037 loop_done = EVBREAK_CANCEL; 3497 loop_done = EVBREAK_CANCEL;
3038 3498
3039#if EV_FEATURE_API 3499#if EV_FEATURE_API
3040 --loop_depth; 3500 --loop_depth;
3041#endif 3501#endif
3502
3503 return activecnt;
3042} 3504}
3043 3505
3044void 3506void
3045ev_break (EV_P_ int how) 3507ev_break (EV_P_ int how) EV_THROW
3046{ 3508{
3047 loop_done = how; 3509 loop_done = how;
3048} 3510}
3049 3511
3050void 3512void
3051ev_ref (EV_P) 3513ev_ref (EV_P) EV_THROW
3052{ 3514{
3053 ++activecnt; 3515 ++activecnt;
3054} 3516}
3055 3517
3056void 3518void
3057ev_unref (EV_P) 3519ev_unref (EV_P) EV_THROW
3058{ 3520{
3059 --activecnt; 3521 --activecnt;
3060} 3522}
3061 3523
3062void 3524void
3063ev_now_update (EV_P) 3525ev_now_update (EV_P) EV_THROW
3064{ 3526{
3065 time_update (EV_A_ 1e100); 3527 time_update (EV_A_ 1e100);
3066} 3528}
3067 3529
3068void 3530void
3069ev_suspend (EV_P) 3531ev_suspend (EV_P) EV_THROW
3070{ 3532{
3071 ev_now_update (EV_A); 3533 ev_now_update (EV_A);
3072} 3534}
3073 3535
3074void 3536void
3075ev_resume (EV_P) 3537ev_resume (EV_P) EV_THROW
3076{ 3538{
3077 ev_tstamp mn_prev = mn_now; 3539 ev_tstamp mn_prev = mn_now;
3078 3540
3079 ev_now_update (EV_A); 3541 ev_now_update (EV_A);
3080 timers_reschedule (EV_A_ mn_now - mn_prev); 3542 timers_reschedule (EV_A_ mn_now - mn_prev);
3119 w->pending = 0; 3581 w->pending = 0;
3120 } 3582 }
3121} 3583}
3122 3584
3123int 3585int
3124ev_clear_pending (EV_P_ void *w) 3586ev_clear_pending (EV_P_ void *w) EV_THROW
3125{ 3587{
3126 W w_ = (W)w; 3588 W w_ = (W)w;
3127 int pending = w_->pending; 3589 int pending = w_->pending;
3128 3590
3129 if (expect_true (pending)) 3591 if (expect_true (pending))
3162} 3624}
3163 3625
3164/*****************************************************************************/ 3626/*****************************************************************************/
3165 3627
3166void noinline 3628void noinline
3167ev_io_start (EV_P_ ev_io *w) 3629ev_io_start (EV_P_ ev_io *w) EV_THROW
3168{ 3630{
3169 int fd = w->fd; 3631 int fd = w->fd;
3170 3632
3171 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
3172 return; 3634 return;
3178 3640
3179 ev_start (EV_A_ (W)w, 1); 3641 ev_start (EV_A_ (W)w, 1);
3180 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3181 wlist_add (&anfds[fd].head, (WL)w); 3643 wlist_add (&anfds[fd].head, (WL)w);
3182 3644
3645 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647
3183 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3648 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3184 w->events &= ~EV__IOFDSET; 3649 w->events &= ~EV__IOFDSET;
3185 3650
3186 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
3187} 3652}
3188 3653
3189void noinline 3654void noinline
3190ev_io_stop (EV_P_ ev_io *w) 3655ev_io_stop (EV_P_ ev_io *w) EV_THROW
3191{ 3656{
3192 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
3193 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
3194 return; 3659 return;
3195 3660
3204 3669
3205 EV_FREQUENT_CHECK; 3670 EV_FREQUENT_CHECK;
3206} 3671}
3207 3672
3208void noinline 3673void noinline
3209ev_timer_start (EV_P_ ev_timer *w) 3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3210{ 3675{
3211 if (expect_false (ev_is_active (w))) 3676 if (expect_false (ev_is_active (w)))
3212 return; 3677 return;
3213 3678
3214 ev_at (w) += mn_now; 3679 ev_at (w) += mn_now;
3228 3693
3229 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3230} 3695}
3231 3696
3232void noinline 3697void noinline
3233ev_timer_stop (EV_P_ ev_timer *w) 3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3234{ 3699{
3235 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
3236 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
3237 return; 3702 return;
3238 3703
3258 3723
3259 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
3260} 3725}
3261 3726
3262void noinline 3727void noinline
3263ev_timer_again (EV_P_ ev_timer *w) 3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3264{ 3729{
3265 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
3731
3732 clear_pending (EV_A_ (W)w);
3266 3733
3267 if (ev_is_active (w)) 3734 if (ev_is_active (w))
3268 { 3735 {
3269 if (w->repeat) 3736 if (w->repeat)
3270 { 3737 {
3283 3750
3284 EV_FREQUENT_CHECK; 3751 EV_FREQUENT_CHECK;
3285} 3752}
3286 3753
3287ev_tstamp 3754ev_tstamp
3288ev_timer_remaining (EV_P_ ev_timer *w) 3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3289{ 3756{
3290 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3291} 3758}
3292 3759
3293#if EV_PERIODIC_ENABLE 3760#if EV_PERIODIC_ENABLE
3294void noinline 3761void noinline
3295ev_periodic_start (EV_P_ ev_periodic *w) 3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3296{ 3763{
3297 if (expect_false (ev_is_active (w))) 3764 if (expect_false (ev_is_active (w)))
3298 return; 3765 return;
3299 3766
3300 if (w->reschedule_cb) 3767 if (w->reschedule_cb)
3320 3787
3321 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3322} 3789}
3323 3790
3324void noinline 3791void noinline
3325ev_periodic_stop (EV_P_ ev_periodic *w) 3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3326{ 3793{
3327 clear_pending (EV_A_ (W)w); 3794 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 3795 if (expect_false (!ev_is_active (w)))
3329 return; 3796 return;
3330 3797
3348 3815
3349 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
3350} 3817}
3351 3818
3352void noinline 3819void noinline
3353ev_periodic_again (EV_P_ ev_periodic *w) 3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3354{ 3821{
3355 /* TODO: use adjustheap and recalculation */ 3822 /* TODO: use adjustheap and recalculation */
3356 ev_periodic_stop (EV_A_ w); 3823 ev_periodic_stop (EV_A_ w);
3357 ev_periodic_start (EV_A_ w); 3824 ev_periodic_start (EV_A_ w);
3358} 3825}
3363#endif 3830#endif
3364 3831
3365#if EV_SIGNAL_ENABLE 3832#if EV_SIGNAL_ENABLE
3366 3833
3367void noinline 3834void noinline
3368ev_signal_start (EV_P_ ev_signal *w) 3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3369{ 3836{
3370 if (expect_false (ev_is_active (w))) 3837 if (expect_false (ev_is_active (w)))
3371 return; 3838 return;
3372 3839
3373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3840 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3375#if EV_MULTIPLICITY 3842#if EV_MULTIPLICITY
3376 assert (("libev: a signal must not be attached to two different loops", 3843 assert (("libev: a signal must not be attached to two different loops",
3377 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3844 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3378 3845
3379 signals [w->signum - 1].loop = EV_A; 3846 signals [w->signum - 1].loop = EV_A;
3847 ECB_MEMORY_FENCE_RELEASE;
3380#endif 3848#endif
3381 3849
3382 EV_FREQUENT_CHECK; 3850 EV_FREQUENT_CHECK;
3383 3851
3384#if EV_USE_SIGNALFD 3852#if EV_USE_SIGNALFD
3444 3912
3445 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
3446} 3914}
3447 3915
3448void noinline 3916void noinline
3449ev_signal_stop (EV_P_ ev_signal *w) 3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3450{ 3918{
3451 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
3452 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
3453 return; 3921 return;
3454 3922
3485#endif 3953#endif
3486 3954
3487#if EV_CHILD_ENABLE 3955#if EV_CHILD_ENABLE
3488 3956
3489void 3957void
3490ev_child_start (EV_P_ ev_child *w) 3958ev_child_start (EV_P_ ev_child *w) EV_THROW
3491{ 3959{
3492#if EV_MULTIPLICITY 3960#if EV_MULTIPLICITY
3493 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3961 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3494#endif 3962#endif
3495 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
3502 3970
3503 EV_FREQUENT_CHECK; 3971 EV_FREQUENT_CHECK;
3504} 3972}
3505 3973
3506void 3974void
3507ev_child_stop (EV_P_ ev_child *w) 3975ev_child_stop (EV_P_ ev_child *w) EV_THROW
3508{ 3976{
3509 clear_pending (EV_A_ (W)w); 3977 clear_pending (EV_A_ (W)w);
3510 if (expect_false (!ev_is_active (w))) 3978 if (expect_false (!ev_is_active (w)))
3511 return; 3979 return;
3512 3980
3539# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3540 4008
3541static void noinline 4009static void noinline
3542infy_add (EV_P_ ev_stat *w) 4010infy_add (EV_P_ ev_stat *w)
3543{ 4011{
3544 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); 4012 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4015 | IN_DONT_FOLLOW | IN_MASK_ADD);
3545 4016
3546 if (w->wd >= 0) 4017 if (w->wd >= 0)
3547 { 4018 {
3548 struct statfs sfs; 4019 struct statfs sfs;
3549 4020
3553 4024
3554 if (!fs_2625) 4025 if (!fs_2625)
3555 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3556 else if (!statfs (w->path, &sfs) 4027 else if (!statfs (w->path, &sfs)
3557 && (sfs.f_type == 0x1373 /* devfs */ 4028 && (sfs.f_type == 0x1373 /* devfs */
4029 || sfs.f_type == 0x4006 /* fat */
4030 || sfs.f_type == 0x4d44 /* msdos */
3558 || sfs.f_type == 0xEF53 /* ext2/3 */ 4031 || sfs.f_type == 0xEF53 /* ext2/3 */
4032 || sfs.f_type == 0x72b6 /* jffs2 */
4033 || sfs.f_type == 0x858458f6 /* ramfs */
4034 || sfs.f_type == 0x5346544e /* ntfs */
3559 || sfs.f_type == 0x3153464a /* jfs */ 4035 || sfs.f_type == 0x3153464a /* jfs */
4036 || sfs.f_type == 0x9123683e /* btrfs */
3560 || sfs.f_type == 0x52654973 /* reiser3 */ 4037 || sfs.f_type == 0x52654973 /* reiser3 */
3561 || sfs.f_type == 0x01021994 /* tempfs */ 4038 || sfs.f_type == 0x01021994 /* tmpfs */
3562 || sfs.f_type == 0x58465342 /* xfs */)) 4039 || sfs.f_type == 0x58465342 /* xfs */))
3563 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4040 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3564 else 4041 else
3565 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4042 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3566 } 4043 }
3679} 4156}
3680 4157
3681inline_size int 4158inline_size int
3682infy_newfd (void) 4159infy_newfd (void)
3683{ 4160{
3684#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4161#if defined IN_CLOEXEC && defined IN_NONBLOCK
3685 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4162 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3686 if (fd >= 0) 4163 if (fd >= 0)
3687 return fd; 4164 return fd;
3688#endif 4165#endif
3689 return inotify_init (); 4166 return inotify_init ();
3764#else 4241#else
3765# define EV_LSTAT(p,b) lstat (p, b) 4242# define EV_LSTAT(p,b) lstat (p, b)
3766#endif 4243#endif
3767 4244
3768void 4245void
3769ev_stat_stat (EV_P_ ev_stat *w) 4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3770{ 4247{
3771 if (lstat (w->path, &w->attr) < 0) 4248 if (lstat (w->path, &w->attr) < 0)
3772 w->attr.st_nlink = 0; 4249 w->attr.st_nlink = 0;
3773 else if (!w->attr.st_nlink) 4250 else if (!w->attr.st_nlink)
3774 w->attr.st_nlink = 1; 4251 w->attr.st_nlink = 1;
3813 ev_feed_event (EV_A_ w, EV_STAT); 4290 ev_feed_event (EV_A_ w, EV_STAT);
3814 } 4291 }
3815} 4292}
3816 4293
3817void 4294void
3818ev_stat_start (EV_P_ ev_stat *w) 4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3819{ 4296{
3820 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3821 return; 4298 return;
3822 4299
3823 ev_stat_stat (EV_A_ w); 4300 ev_stat_stat (EV_A_ w);
3844 4321
3845 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
3846} 4323}
3847 4324
3848void 4325void
3849ev_stat_stop (EV_P_ ev_stat *w) 4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3850{ 4327{
3851 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
3852 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
3853 return; 4330 return;
3854 4331
3870} 4347}
3871#endif 4348#endif
3872 4349
3873#if EV_IDLE_ENABLE 4350#if EV_IDLE_ENABLE
3874void 4351void
3875ev_idle_start (EV_P_ ev_idle *w) 4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3876{ 4353{
3877 if (expect_false (ev_is_active (w))) 4354 if (expect_false (ev_is_active (w)))
3878 return; 4355 return;
3879 4356
3880 pri_adjust (EV_A_ (W)w); 4357 pri_adjust (EV_A_ (W)w);
3893 4370
3894 EV_FREQUENT_CHECK; 4371 EV_FREQUENT_CHECK;
3895} 4372}
3896 4373
3897void 4374void
3898ev_idle_stop (EV_P_ ev_idle *w) 4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3899{ 4376{
3900 clear_pending (EV_A_ (W)w); 4377 clear_pending (EV_A_ (W)w);
3901 if (expect_false (!ev_is_active (w))) 4378 if (expect_false (!ev_is_active (w)))
3902 return; 4379 return;
3903 4380
3917} 4394}
3918#endif 4395#endif
3919 4396
3920#if EV_PREPARE_ENABLE 4397#if EV_PREPARE_ENABLE
3921void 4398void
3922ev_prepare_start (EV_P_ ev_prepare *w) 4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3923{ 4400{
3924 if (expect_false (ev_is_active (w))) 4401 if (expect_false (ev_is_active (w)))
3925 return; 4402 return;
3926 4403
3927 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
3932 4409
3933 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
3934} 4411}
3935 4412
3936void 4413void
3937ev_prepare_stop (EV_P_ ev_prepare *w) 4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3938{ 4415{
3939 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4417 if (expect_false (!ev_is_active (w)))
3941 return; 4418 return;
3942 4419
3955} 4432}
3956#endif 4433#endif
3957 4434
3958#if EV_CHECK_ENABLE 4435#if EV_CHECK_ENABLE
3959void 4436void
3960ev_check_start (EV_P_ ev_check *w) 4437ev_check_start (EV_P_ ev_check *w) EV_THROW
3961{ 4438{
3962 if (expect_false (ev_is_active (w))) 4439 if (expect_false (ev_is_active (w)))
3963 return; 4440 return;
3964 4441
3965 EV_FREQUENT_CHECK; 4442 EV_FREQUENT_CHECK;
3970 4447
3971 EV_FREQUENT_CHECK; 4448 EV_FREQUENT_CHECK;
3972} 4449}
3973 4450
3974void 4451void
3975ev_check_stop (EV_P_ ev_check *w) 4452ev_check_stop (EV_P_ ev_check *w) EV_THROW
3976{ 4453{
3977 clear_pending (EV_A_ (W)w); 4454 clear_pending (EV_A_ (W)w);
3978 if (expect_false (!ev_is_active (w))) 4455 if (expect_false (!ev_is_active (w)))
3979 return; 4456 return;
3980 4457
3993} 4470}
3994#endif 4471#endif
3995 4472
3996#if EV_EMBED_ENABLE 4473#if EV_EMBED_ENABLE
3997void noinline 4474void noinline
3998ev_embed_sweep (EV_P_ ev_embed *w) 4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3999{ 4476{
4000 ev_run (w->other, EVRUN_NOWAIT); 4477 ev_run (w->other, EVRUN_NOWAIT);
4001} 4478}
4002 4479
4003static void 4480static void
4051 ev_idle_stop (EV_A_ idle); 4528 ev_idle_stop (EV_A_ idle);
4052} 4529}
4053#endif 4530#endif
4054 4531
4055void 4532void
4056ev_embed_start (EV_P_ ev_embed *w) 4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4057{ 4534{
4058 if (expect_false (ev_is_active (w))) 4535 if (expect_false (ev_is_active (w)))
4059 return; 4536 return;
4060 4537
4061 { 4538 {
4082 4559
4083 EV_FREQUENT_CHECK; 4560 EV_FREQUENT_CHECK;
4084} 4561}
4085 4562
4086void 4563void
4087ev_embed_stop (EV_P_ ev_embed *w) 4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4088{ 4565{
4089 clear_pending (EV_A_ (W)w); 4566 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 4567 if (expect_false (!ev_is_active (w)))
4091 return; 4568 return;
4092 4569
4102} 4579}
4103#endif 4580#endif
4104 4581
4105#if EV_FORK_ENABLE 4582#if EV_FORK_ENABLE
4106void 4583void
4107ev_fork_start (EV_P_ ev_fork *w) 4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4108{ 4585{
4109 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
4110 return; 4587 return;
4111 4588
4112 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
4117 4594
4118 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
4119} 4596}
4120 4597
4121void 4598void
4122ev_fork_stop (EV_P_ ev_fork *w) 4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4123{ 4600{
4124 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
4125 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
4126 return; 4603 return;
4127 4604
4140} 4617}
4141#endif 4618#endif
4142 4619
4143#if EV_CLEANUP_ENABLE 4620#if EV_CLEANUP_ENABLE
4144void 4621void
4145ev_cleanup_start (EV_P_ ev_cleanup *w) 4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4146{ 4623{
4147 if (expect_false (ev_is_active (w))) 4624 if (expect_false (ev_is_active (w)))
4148 return; 4625 return;
4149 4626
4150 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
4157 ev_unref (EV_A); 4634 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
4159} 4636}
4160 4637
4161void 4638void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w) 4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4163{ 4640{
4164 clear_pending (EV_A_ (W)w); 4641 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w))) 4642 if (expect_false (!ev_is_active (w)))
4166 return; 4643 return;
4167 4644
4181} 4658}
4182#endif 4659#endif
4183 4660
4184#if EV_ASYNC_ENABLE 4661#if EV_ASYNC_ENABLE
4185void 4662void
4186ev_async_start (EV_P_ ev_async *w) 4663ev_async_start (EV_P_ ev_async *w) EV_THROW
4187{ 4664{
4188 if (expect_false (ev_is_active (w))) 4665 if (expect_false (ev_is_active (w)))
4189 return; 4666 return;
4190 4667
4191 w->sent = 0; 4668 w->sent = 0;
4200 4677
4201 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
4202} 4679}
4203 4680
4204void 4681void
4205ev_async_stop (EV_P_ ev_async *w) 4682ev_async_stop (EV_P_ ev_async *w) EV_THROW
4206{ 4683{
4207 clear_pending (EV_A_ (W)w); 4684 clear_pending (EV_A_ (W)w);
4208 if (expect_false (!ev_is_active (w))) 4685 if (expect_false (!ev_is_active (w)))
4209 return; 4686 return;
4210 4687
4221 4698
4222 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
4223} 4700}
4224 4701
4225void 4702void
4226ev_async_send (EV_P_ ev_async *w) 4703ev_async_send (EV_P_ ev_async *w) EV_THROW
4227{ 4704{
4228 w->sent = 1; 4705 w->sent = 1;
4229 evpipe_write (EV_A_ &async_pending); 4706 evpipe_write (EV_A_ &async_pending);
4230} 4707}
4231#endif 4708#endif
4268 4745
4269 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4746 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4270} 4747}
4271 4748
4272void 4749void
4273ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4750ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4274{ 4751{
4275 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4752 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4276 4753
4277 if (expect_false (!once)) 4754 if (expect_false (!once))
4278 { 4755 {
4300 4777
4301/*****************************************************************************/ 4778/*****************************************************************************/
4302 4779
4303#if EV_WALK_ENABLE 4780#if EV_WALK_ENABLE
4304void ecb_cold 4781void ecb_cold
4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4306{ 4783{
4307 int i, j; 4784 int i, j;
4308 ev_watcher_list *wl, *wn; 4785 ev_watcher_list *wl, *wn;
4309 4786
4310 if (types & (EV_IO | EV_EMBED)) 4787 if (types & (EV_IO | EV_EMBED))
4416 4893
4417#if EV_MULTIPLICITY 4894#if EV_MULTIPLICITY
4418 #include "ev_wrap.h" 4895 #include "ev_wrap.h"
4419#endif 4896#endif
4420 4897
4421EV_CPP(})
4422

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