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Comparing libev/ev.c (file contents):
Revision 1.396 by root, Wed Aug 24 16:13:17 2011 UTC vs.
Revision 1.473 by root, Tue Sep 9 21:51:35 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) 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) 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)))
1071#endif
1072
1073#if __cplusplus
1074 template<typename T>
1075 static inline T ecb_div_rd (T val, T div)
1076 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 }
1079 template<typename T>
1080 static inline T ecb_div_ru (T val, T div)
1081 {
1082 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1083 }
1084#else
1085 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1086 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
846#endif 1087#endif
847 1088
848#if ecb_cplusplus_does_not_suck 1089#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1090 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N> 1091 template<typename T, int N>
… …
854 } 1095 }
855#else 1096#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1098#endif
858 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
859#endif 1302#endif
860 1303
861/* ECB.H END */ 1304/* ECB.H END */
862 1305
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864/* if your architetcure doesn't need memory fences, e.g. because it is 1307/* if your architecture doesn't need memory fences, e.g. because it is
865 * 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
866 * 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
867 * libev, in which casess the memory fences become nops. 1310 * libev, in which cases the memory fences become nops.
868 * alternatively, you can remove this #error and link against libpthread, 1311 * alternatively, you can remove this #error and link against libpthread,
869 * which will then provide the memory fences. 1312 * which will then provide the memory fences.
870 */ 1313 */
871# error "memory fences not defined for your architecture, please report" 1314# error "memory fences not defined for your architecture, please report"
872#endif 1315#endif
… …
1029{ 1472{
1030 write (STDERR_FILENO, msg, strlen (msg)); 1473 write (STDERR_FILENO, msg, strlen (msg));
1031} 1474}
1032#endif 1475#endif
1033 1476
1034static void (*syserr_cb)(const char *msg); 1477static void (*syserr_cb)(const char *msg) EV_THROW;
1035 1478
1036void ecb_cold 1479void ecb_cold
1037ev_set_syserr_cb (void (*cb)(const char *msg)) 1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1038{ 1481{
1039 syserr_cb = cb; 1482 syserr_cb = cb;
1040} 1483}
1041 1484
1042static void noinline ecb_cold 1485static void noinline ecb_cold
… …
1060 abort (); 1503 abort ();
1061 } 1504 }
1062} 1505}
1063 1506
1064static void * 1507static void *
1065ev_realloc_emul (void *ptr, long size) 1508ev_realloc_emul (void *ptr, long size) EV_THROW
1066{ 1509{
1067#if __GLIBC__
1068 return realloc (ptr, size);
1069#else
1070 /* some systems, notably openbsd and darwin, fail to properly 1510 /* some systems, notably openbsd and darwin, fail to properly
1071 * 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
1072 * 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.
1073 */ 1515 */
1074 1516
1075 if (size) 1517 if (size)
1076 return realloc (ptr, size); 1518 return realloc (ptr, size);
1077 1519
1078 free (ptr); 1520 free (ptr);
1079 return 0; 1521 return 0;
1080#endif
1081} 1522}
1082 1523
1083static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1084 1525
1085void ecb_cold 1526void ecb_cold
1086ev_set_allocator (void *(*cb)(void *ptr, long size)) 1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1087{ 1528{
1088 alloc = cb; 1529 alloc = cb;
1089} 1530}
1090 1531
1091inline_speed void * 1532inline_speed void *
… …
1179 #undef VAR 1620 #undef VAR
1180 }; 1621 };
1181 #include "ev_wrap.h" 1622 #include "ev_wrap.h"
1182 1623
1183 static struct ev_loop default_loop_struct; 1624 static struct ev_loop default_loop_struct;
1184 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 */
1185 1626
1186#else 1627#else
1187 1628
1188 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 */
1189 #define VAR(name,decl) static decl; 1630 #define VAR(name,decl) static decl;
1190 #include "ev_vars.h" 1631 #include "ev_vars.h"
1191 #undef VAR 1632 #undef VAR
1192 1633
1193 static int ev_default_loop_ptr; 1634 static int ev_default_loop_ptr;
… …
1208 1649
1209/*****************************************************************************/ 1650/*****************************************************************************/
1210 1651
1211#ifndef EV_HAVE_EV_TIME 1652#ifndef EV_HAVE_EV_TIME
1212ev_tstamp 1653ev_tstamp
1213ev_time (void) 1654ev_time (void) EV_THROW
1214{ 1655{
1215#if EV_USE_REALTIME 1656#if EV_USE_REALTIME
1216 if (expect_true (have_realtime)) 1657 if (expect_true (have_realtime))
1217 { 1658 {
1218 struct timespec ts; 1659 struct timespec ts;
… …
1242 return ev_time (); 1683 return ev_time ();
1243} 1684}
1244 1685
1245#if EV_MULTIPLICITY 1686#if EV_MULTIPLICITY
1246ev_tstamp 1687ev_tstamp
1247ev_now (EV_P) 1688ev_now (EV_P) EV_THROW
1248{ 1689{
1249 return ev_rt_now; 1690 return ev_rt_now;
1250} 1691}
1251#endif 1692#endif
1252 1693
1253void 1694void
1254ev_sleep (ev_tstamp delay) 1695ev_sleep (ev_tstamp delay) EV_THROW
1255{ 1696{
1256 if (delay > 0.) 1697 if (delay > 0.)
1257 { 1698 {
1258#if EV_USE_NANOSLEEP 1699#if EV_USE_NANOSLEEP
1259 struct timespec ts; 1700 struct timespec ts;
1260 1701
1261 EV_TS_SET (ts, delay); 1702 EV_TS_SET (ts, delay);
1262 nanosleep (&ts, 0); 1703 nanosleep (&ts, 0);
1263#elif defined(_WIN32) 1704#elif defined _WIN32
1264 Sleep ((unsigned long)(delay * 1e3)); 1705 Sleep ((unsigned long)(delay * 1e3));
1265#else 1706#else
1266 struct timeval tv; 1707 struct timeval tv;
1267 1708
1268 /* 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 */
… …
1287 1728
1288 do 1729 do
1289 ncur <<= 1; 1730 ncur <<= 1;
1290 while (cnt > ncur); 1731 while (cnt > ncur);
1291 1732
1292 /* 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 */
1293 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1734 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1294 { 1735 {
1295 ncur *= elem; 1736 ncur *= elem;
1296 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);
1297 ncur = ncur - sizeof (void *) * 4; 1738 ncur = ncur - sizeof (void *) * 4;
… …
1340pendingcb (EV_P_ ev_prepare *w, int revents) 1781pendingcb (EV_P_ ev_prepare *w, int revents)
1341{ 1782{
1342} 1783}
1343 1784
1344void noinline 1785void noinline
1345ev_feed_event (EV_P_ void *w, int revents) 1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1346{ 1787{
1347 W w_ = (W)w; 1788 W w_ = (W)w;
1348 int pri = ABSPRI (w_); 1789 int pri = ABSPRI (w_);
1349 1790
1350 if (expect_false (w_->pending)) 1791 if (expect_false (w_->pending))
… …
1354 w_->pending = ++pendingcnt [pri]; 1795 w_->pending = ++pendingcnt [pri];
1355 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1356 pendings [pri][w_->pending - 1].w = w_; 1797 pendings [pri][w_->pending - 1].w = w_;
1357 pendings [pri][w_->pending - 1].events = revents; 1798 pendings [pri][w_->pending - 1].events = revents;
1358 } 1799 }
1800
1801 pendingpri = NUMPRI - 1;
1359} 1802}
1360 1803
1361inline_speed void 1804inline_speed void
1362feed_reverse (EV_P_ W w) 1805feed_reverse (EV_P_ W w)
1363{ 1806{
… …
1409 if (expect_true (!anfd->reify)) 1852 if (expect_true (!anfd->reify))
1410 fd_event_nocheck (EV_A_ fd, revents); 1853 fd_event_nocheck (EV_A_ fd, revents);
1411} 1854}
1412 1855
1413void 1856void
1414ev_feed_fd_event (EV_P_ int fd, int revents) 1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1415{ 1858{
1416 if (fd >= 0 && fd < anfdmax) 1859 if (fd >= 0 && fd < anfdmax)
1417 fd_event_nocheck (EV_A_ fd, revents); 1860 fd_event_nocheck (EV_A_ fd, revents);
1418} 1861}
1419 1862
… …
1738static void noinline ecb_cold 2181static void noinline ecb_cold
1739evpipe_init (EV_P) 2182evpipe_init (EV_P)
1740{ 2183{
1741 if (!ev_is_active (&pipe_w)) 2184 if (!ev_is_active (&pipe_w))
1742 { 2185 {
2186 int fds [2];
2187
1743# if EV_USE_EVENTFD 2188# if EV_USE_EVENTFD
2189 fds [0] = -1;
1744 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2190 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1745 if (evfd < 0 && errno == EINVAL) 2191 if (fds [1] < 0 && errno == EINVAL)
1746 evfd = eventfd (0, 0); 2192 fds [1] = eventfd (0, 0);
1747 2193
1748 if (evfd >= 0) 2194 if (fds [1] < 0)
2195# endif
1749 { 2196 {
2197 while (pipe (fds))
2198 ev_syserr ("(libev) error creating signal/async pipe");
2199
2200 fd_intern (fds [0]);
2201 }
2202
1750 evpipe [0] = -1; 2203 evpipe [0] = fds [0];
1751 fd_intern (evfd); /* doing it twice doesn't hurt */ 2204
1752 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));
1753 } 2255 }
1754 else 2256 else
1755# endif 2257#endif
1756 { 2258 {
1757 while (pipe (evpipe)) 2259#ifdef _WIN32
1758 ev_syserr ("(libev) error creating signal/async pipe"); 2260 WSABUF buf;
1759 2261 DWORD sent;
1760 fd_intern (evpipe [0]); 2262 buf.buf = &buf;
1761 fd_intern (evpipe [1]); 2263 buf.len = 1;
1762 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1763 } 2265#else
1764
1765 ev_io_start (EV_A_ &pipe_w);
1766 ev_unref (EV_A); /* watcher should not keep loop alive */
1767 }
1768}
1769
1770inline_speed void
1771evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1772{
1773 if (expect_true (*flag))
1774 return;
1775
1776 *flag = 1;
1777
1778 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1779
1780 pipe_write_skipped = 1;
1781
1782 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1783
1784 if (pipe_write_wanted)
1785 {
1786 int old_errno;
1787
1788 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1789
1790 old_errno = errno; /* save errno because write will clobber it */
1791
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 {
1795 uint64_t counter = 1;
1796 write (evfd, &counter, sizeof (uint64_t));
1797 }
1798 else
1799#endif
1800 {
1801 /* win32 people keep sending patches that change this write() to send() */
1802 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1803 /* so when you think this write should be a send instead, please find out */
1804 /* where your send() is from - it's definitely not the microsoft send, and */
1805 /* tell me. thank you. */
1806 write (evpipe [1], &(evpipe [1]), 1); 2266 write (evpipe [1], &(evpipe [1]), 1);
2267#endif
1807 } 2268 }
1808 2269
1809 errno = old_errno; 2270 errno = old_errno;
1810 } 2271 }
1811} 2272}
… …
1818 int i; 2279 int i;
1819 2280
1820 if (revents & EV_READ) 2281 if (revents & EV_READ)
1821 { 2282 {
1822#if EV_USE_EVENTFD 2283#if EV_USE_EVENTFD
1823 if (evfd >= 0) 2284 if (evpipe [0] < 0)
1824 { 2285 {
1825 uint64_t counter; 2286 uint64_t counter;
1826 read (evfd, &counter, sizeof (uint64_t)); 2287 read (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2288 }
1828 else 2289 else
1829#endif 2290#endif
1830 { 2291 {
1831 char dummy; 2292 char dummy[4];
1832 /* 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
1833 read (evpipe [0], &dummy, 1); 2301 read (evpipe [0], &dummy, sizeof (dummy));
2302#endif
1834 } 2303 }
1835 } 2304 }
1836 2305
1837 pipe_write_skipped = 0; 2306 pipe_write_skipped = 0;
2307
2308 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1838 2309
1839#if EV_SIGNAL_ENABLE 2310#if EV_SIGNAL_ENABLE
1840 if (sig_pending) 2311 if (sig_pending)
1841 { 2312 {
1842 sig_pending = 0; 2313 sig_pending = 0;
2314
2315 ECB_MEMORY_FENCE;
1843 2316
1844 for (i = EV_NSIG - 1; i--; ) 2317 for (i = EV_NSIG - 1; i--; )
1845 if (expect_false (signals [i].pending)) 2318 if (expect_false (signals [i].pending))
1846 ev_feed_signal_event (EV_A_ i + 1); 2319 ev_feed_signal_event (EV_A_ i + 1);
1847 } 2320 }
… …
1849 2322
1850#if EV_ASYNC_ENABLE 2323#if EV_ASYNC_ENABLE
1851 if (async_pending) 2324 if (async_pending)
1852 { 2325 {
1853 async_pending = 0; 2326 async_pending = 0;
2327
2328 ECB_MEMORY_FENCE;
1854 2329
1855 for (i = asynccnt; i--; ) 2330 for (i = asynccnt; i--; )
1856 if (asyncs [i]->sent) 2331 if (asyncs [i]->sent)
1857 { 2332 {
1858 asyncs [i]->sent = 0; 2333 asyncs [i]->sent = 0;
2334 ECB_MEMORY_FENCE_RELEASE;
1859 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2335 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1860 } 2336 }
1861 } 2337 }
1862#endif 2338#endif
1863} 2339}
1864 2340
1865/*****************************************************************************/ 2341/*****************************************************************************/
1866 2342
1867void 2343void
1868ev_feed_signal (int signum) 2344ev_feed_signal (int signum) EV_THROW
1869{ 2345{
1870#if EV_MULTIPLICITY 2346#if EV_MULTIPLICITY
2347 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE;
1871 EV_P = signals [signum - 1].loop; 2349 EV_A = signals [signum - 1].loop;
1872 2350
1873 if (!EV_A) 2351 if (!EV_A)
1874 return; 2352 return;
1875#endif 2353#endif
1876 2354
1877 if (!ev_active (&pipe_w))
1878 return;
1879
1880 signals [signum - 1].pending = 1; 2355 signals [signum - 1].pending = 1;
1881 evpipe_write (EV_A_ &sig_pending); 2356 evpipe_write (EV_A_ &sig_pending);
1882} 2357}
1883 2358
1884static void 2359static void
… …
1890 2365
1891 ev_feed_signal (signum); 2366 ev_feed_signal (signum);
1892} 2367}
1893 2368
1894void noinline 2369void noinline
1895ev_feed_signal_event (EV_P_ int signum) 2370ev_feed_signal_event (EV_P_ int signum) EV_THROW
1896{ 2371{
1897 WL w; 2372 WL w;
1898 2373
1899 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2374 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1900 return; 2375 return;
1901 2376
1902 --signum; 2377 --signum;
1903 2378
1904#if EV_MULTIPLICITY 2379#if EV_MULTIPLICITY
… …
1908 if (expect_false (signals [signum].loop != EV_A)) 2383 if (expect_false (signals [signum].loop != EV_A))
1909 return; 2384 return;
1910#endif 2385#endif
1911 2386
1912 signals [signum].pending = 0; 2387 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE;
1913 2389
1914 for (w = signals [signum].head; w; w = w->next) 2390 for (w = signals [signum].head; w; w = w->next)
1915 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2391 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1916} 2392}
1917 2393
… …
2016#if EV_USE_SELECT 2492#if EV_USE_SELECT
2017# include "ev_select.c" 2493# include "ev_select.c"
2018#endif 2494#endif
2019 2495
2020int ecb_cold 2496int ecb_cold
2021ev_version_major (void) 2497ev_version_major (void) EV_THROW
2022{ 2498{
2023 return EV_VERSION_MAJOR; 2499 return EV_VERSION_MAJOR;
2024} 2500}
2025 2501
2026int ecb_cold 2502int ecb_cold
2027ev_version_minor (void) 2503ev_version_minor (void) EV_THROW
2028{ 2504{
2029 return EV_VERSION_MINOR; 2505 return EV_VERSION_MINOR;
2030} 2506}
2031 2507
2032/* 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 */
… …
2040 || getgid () != getegid (); 2516 || getgid () != getegid ();
2041#endif 2517#endif
2042} 2518}
2043 2519
2044unsigned int ecb_cold 2520unsigned int ecb_cold
2045ev_supported_backends (void) 2521ev_supported_backends (void) EV_THROW
2046{ 2522{
2047 unsigned int flags = 0; 2523 unsigned int flags = 0;
2048 2524
2049 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2050 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2054 2530
2055 return flags; 2531 return flags;
2056} 2532}
2057 2533
2058unsigned int ecb_cold 2534unsigned int ecb_cold
2059ev_recommended_backends (void) 2535ev_recommended_backends (void) EV_THROW
2060{ 2536{
2061 unsigned int flags = ev_supported_backends (); 2537 unsigned int flags = ev_supported_backends ();
2062 2538
2063#ifndef __NetBSD__ 2539#ifndef __NetBSD__
2064 /* kqueue is borked on everything but netbsd apparently */ 2540 /* kqueue is borked on everything but netbsd apparently */
… …
2076 2552
2077 return flags; 2553 return flags;
2078} 2554}
2079 2555
2080unsigned int ecb_cold 2556unsigned int ecb_cold
2081ev_embeddable_backends (void) 2557ev_embeddable_backends (void) EV_THROW
2082{ 2558{
2083 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2084 2560
2085 /* 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 */
2086 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 */
… …
2088 2564
2089 return flags; 2565 return flags;
2090} 2566}
2091 2567
2092unsigned int 2568unsigned int
2093ev_backend (EV_P) 2569ev_backend (EV_P) EV_THROW
2094{ 2570{
2095 return backend; 2571 return backend;
2096} 2572}
2097 2573
2098#if EV_FEATURE_API 2574#if EV_FEATURE_API
2099unsigned int 2575unsigned int
2100ev_iteration (EV_P) 2576ev_iteration (EV_P) EV_THROW
2101{ 2577{
2102 return loop_count; 2578 return loop_count;
2103} 2579}
2104 2580
2105unsigned int 2581unsigned int
2106ev_depth (EV_P) 2582ev_depth (EV_P) EV_THROW
2107{ 2583{
2108 return loop_depth; 2584 return loop_depth;
2109} 2585}
2110 2586
2111void 2587void
2112ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2113{ 2589{
2114 io_blocktime = interval; 2590 io_blocktime = interval;
2115} 2591}
2116 2592
2117void 2593void
2118ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2119{ 2595{
2120 timeout_blocktime = interval; 2596 timeout_blocktime = interval;
2121} 2597}
2122 2598
2123void 2599void
2124ev_set_userdata (EV_P_ void *data) 2600ev_set_userdata (EV_P_ void *data) EV_THROW
2125{ 2601{
2126 userdata = data; 2602 userdata = data;
2127} 2603}
2128 2604
2129void * 2605void *
2130ev_userdata (EV_P) 2606ev_userdata (EV_P) EV_THROW
2131{ 2607{
2132 return userdata; 2608 return userdata;
2133} 2609}
2134 2610
2135void 2611void
2136ev_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
2137{ 2613{
2138 invoke_cb = invoke_pending_cb; 2614 invoke_cb = invoke_pending_cb;
2139} 2615}
2140 2616
2141void 2617void
2142ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2618ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2143{ 2619{
2144 release_cb = release; 2620 release_cb = release;
2145 acquire_cb = acquire; 2621 acquire_cb = acquire;
2146} 2622}
2147#endif 2623#endif
2148 2624
2149/* initialise a loop structure, must be zero-initialised */ 2625/* initialise a loop structure, must be zero-initialised */
2150static void noinline ecb_cold 2626static void noinline ecb_cold
2151loop_init (EV_P_ unsigned int flags) 2627loop_init (EV_P_ unsigned int flags) EV_THROW
2152{ 2628{
2153 if (!backend) 2629 if (!backend)
2154 { 2630 {
2155 origflags = flags; 2631 origflags = flags;
2156 2632
… …
2201#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
2202 async_pending = 0; 2678 async_pending = 0;
2203#endif 2679#endif
2204 pipe_write_skipped = 0; 2680 pipe_write_skipped = 0;
2205 pipe_write_wanted = 0; 2681 pipe_write_wanted = 0;
2682 evpipe [0] = -1;
2683 evpipe [1] = -1;
2206#if EV_USE_INOTIFY 2684#if EV_USE_INOTIFY
2207 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2685 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2208#endif 2686#endif
2209#if EV_USE_SIGNALFD 2687#if EV_USE_SIGNALFD
2210 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2688 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2261 EV_INVOKE_PENDING; 2739 EV_INVOKE_PENDING;
2262 } 2740 }
2263#endif 2741#endif
2264 2742
2265#if EV_CHILD_ENABLE 2743#if EV_CHILD_ENABLE
2266 if (ev_is_active (&childev)) 2744 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2267 { 2745 {
2268 ev_ref (EV_A); /* child watcher */ 2746 ev_ref (EV_A); /* child watcher */
2269 ev_signal_stop (EV_A_ &childev); 2747 ev_signal_stop (EV_A_ &childev);
2270 } 2748 }
2271#endif 2749#endif
… …
2273 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
2274 { 2752 {
2275 /*ev_ref (EV_A);*/ 2753 /*ev_ref (EV_A);*/
2276 /*ev_io_stop (EV_A_ &pipe_w);*/ 2754 /*ev_io_stop (EV_A_ &pipe_w);*/
2277 2755
2278#if EV_USE_EVENTFD
2279 if (evfd >= 0)
2280 close (evfd);
2281#endif
2282
2283 if (evpipe [0] >= 0)
2284 {
2285 EV_WIN32_CLOSE_FD (evpipe [0]); 2756 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2286 EV_WIN32_CLOSE_FD (evpipe [1]); 2757 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2287 }
2288 } 2758 }
2289 2759
2290#if EV_USE_SIGNALFD 2760#if EV_USE_SIGNALFD
2291 if (ev_is_active (&sigfd_w)) 2761 if (ev_is_active (&sigfd_w))
2292 close (sigfd); 2762 close (sigfd);
… …
2378#endif 2848#endif
2379#if EV_USE_INOTIFY 2849#if EV_USE_INOTIFY
2380 infy_fork (EV_A); 2850 infy_fork (EV_A);
2381#endif 2851#endif
2382 2852
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2383 if (ev_is_active (&pipe_w)) 2854 if (ev_is_active (&pipe_w))
2384 { 2855 {
2385 /* 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 */
2386 2857
2387 ev_ref (EV_A); 2858 ev_ref (EV_A);
2388 ev_io_stop (EV_A_ &pipe_w); 2859 ev_io_stop (EV_A_ &pipe_w);
2389 2860
2390#if EV_USE_EVENTFD
2391 if (evfd >= 0)
2392 close (evfd);
2393#endif
2394
2395 if (evpipe [0] >= 0) 2861 if (evpipe [0] >= 0)
2396 {
2397 EV_WIN32_CLOSE_FD (evpipe [0]); 2862 EV_WIN32_CLOSE_FD (evpipe [0]);
2398 EV_WIN32_CLOSE_FD (evpipe [1]);
2399 }
2400 2863
2401#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2402 evpipe_init (EV_A); 2864 evpipe_init (EV_A);
2403 /* now iterate over everything, in case we missed something */ 2865 /* iterate over everything, in case we missed something before */
2404 pipecb (EV_A_ &pipe_w, EV_READ); 2866 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2405#endif
2406 } 2867 }
2868#endif
2407 2869
2408 postfork = 0; 2870 postfork = 0;
2409} 2871}
2410 2872
2411#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
2412 2874
2413struct ev_loop * ecb_cold 2875struct ev_loop * ecb_cold
2414ev_loop_new (unsigned int flags) 2876ev_loop_new (unsigned int flags) EV_THROW
2415{ 2877{
2416 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2417 2879
2418 memset (EV_A, 0, sizeof (struct ev_loop)); 2880 memset (EV_A, 0, sizeof (struct ev_loop));
2419 loop_init (EV_A_ flags); 2881 loop_init (EV_A_ flags);
… …
2463} 2925}
2464#endif 2926#endif
2465 2927
2466#if EV_FEATURE_API 2928#if EV_FEATURE_API
2467void ecb_cold 2929void ecb_cold
2468ev_verify (EV_P) 2930ev_verify (EV_P) EV_THROW
2469{ 2931{
2470#if EV_VERIFY 2932#if EV_VERIFY
2471 int i; 2933 int i;
2472 WL w; 2934 WL w, w2;
2473 2935
2474 assert (activecnt >= -1); 2936 assert (activecnt >= -1);
2475 2937
2476 assert (fdchangemax >= fdchangecnt); 2938 assert (fdchangemax >= fdchangecnt);
2477 for (i = 0; i < fdchangecnt; ++i) 2939 for (i = 0; i < fdchangecnt; ++i)
2478 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2940 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2479 2941
2480 assert (anfdmax >= 0); 2942 assert (anfdmax >= 0);
2481 for (i = 0; i < anfdmax; ++i) 2943 for (i = 0; i < anfdmax; ++i)
2944 {
2945 int j = 0;
2946
2482 for (w = anfds [i].head; w; w = w->next) 2947 for (w = w2 = anfds [i].head; w; w = w->next)
2483 { 2948 {
2484 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
2485 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));
2486 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));
2487 } 2959 }
2960 }
2488 2961
2489 assert (timermax >= timercnt); 2962 assert (timermax >= timercnt);
2490 verify_heap (EV_A_ timers, timercnt); 2963 verify_heap (EV_A_ timers, timercnt);
2491 2964
2492#if EV_PERIODIC_ENABLE 2965#if EV_PERIODIC_ENABLE
… …
2542#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
2543struct ev_loop * ecb_cold 3016struct ev_loop * ecb_cold
2544#else 3017#else
2545int 3018int
2546#endif 3019#endif
2547ev_default_loop (unsigned int flags) 3020ev_default_loop (unsigned int flags) EV_THROW
2548{ 3021{
2549 if (!ev_default_loop_ptr) 3022 if (!ev_default_loop_ptr)
2550 { 3023 {
2551#if EV_MULTIPLICITY 3024#if EV_MULTIPLICITY
2552 EV_P = ev_default_loop_ptr = &default_loop_struct; 3025 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2571 3044
2572 return ev_default_loop_ptr; 3045 return ev_default_loop_ptr;
2573} 3046}
2574 3047
2575void 3048void
2576ev_loop_fork (EV_P) 3049ev_loop_fork (EV_P) EV_THROW
2577{ 3050{
2578 postfork = 1; /* must be in line with ev_default_fork */ 3051 postfork = 1;
2579} 3052}
2580 3053
2581/*****************************************************************************/ 3054/*****************************************************************************/
2582 3055
2583void 3056void
… …
2585{ 3058{
2586 EV_CB_INVOKE ((W)w, revents); 3059 EV_CB_INVOKE ((W)w, revents);
2587} 3060}
2588 3061
2589unsigned int 3062unsigned int
2590ev_pending_count (EV_P) 3063ev_pending_count (EV_P) EV_THROW
2591{ 3064{
2592 int pri; 3065 int pri;
2593 unsigned int count = 0; 3066 unsigned int count = 0;
2594 3067
2595 for (pri = NUMPRI; pri--; ) 3068 for (pri = NUMPRI; pri--; )
… …
2599} 3072}
2600 3073
2601void noinline 3074void noinline
2602ev_invoke_pending (EV_P) 3075ev_invoke_pending (EV_P)
2603{ 3076{
2604 int pri; 3077 pendingpri = NUMPRI;
2605 3078
2606 for (pri = NUMPRI; pri--; ) 3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3080 {
3081 --pendingpri;
3082
2607 while (pendingcnt [pri]) 3083 while (pendingcnt [pendingpri])
2608 { 3084 {
2609 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2610 3086
2611 p->w->pending = 0; 3087 p->w->pending = 0;
2612 EV_CB_INVOKE (p->w, p->events); 3088 EV_CB_INVOKE (p->w, p->events);
2613 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
2614 } 3090 }
3091 }
2615} 3092}
2616 3093
2617#if EV_IDLE_ENABLE 3094#if EV_IDLE_ENABLE
2618/* make idle watchers pending. this handles the "call-idle */ 3095/* make idle watchers pending. this handles the "call-idle */
2619/* only when higher priorities are idle" logic */ 3096/* only when higher priorities are idle" logic */
… …
2709{ 3186{
2710 EV_FREQUENT_CHECK; 3187 EV_FREQUENT_CHECK;
2711 3188
2712 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3189 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2713 { 3190 {
2714 int feed_count = 0;
2715
2716 do 3191 do
2717 { 3192 {
2718 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2719 3194
2720 /*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)));*/
… …
2854 3329
2855 mn_now = ev_rt_now; 3330 mn_now = ev_rt_now;
2856 } 3331 }
2857} 3332}
2858 3333
2859void 3334int
2860ev_run (EV_P_ int flags) 3335ev_run (EV_P_ int flags)
2861{ 3336{
2862#if EV_FEATURE_API 3337#if EV_FEATURE_API
2863 ++loop_depth; 3338 ++loop_depth;
2864#endif 3339#endif
… …
2977#endif 3452#endif
2978 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3453 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2979 backend_poll (EV_A_ waittime); 3454 backend_poll (EV_A_ waittime);
2980 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3455 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2981 3456
2982 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3457 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2983 3458
3459 ECB_MEMORY_FENCE_ACQUIRE;
2984 if (pipe_write_skipped) 3460 if (pipe_write_skipped)
2985 { 3461 {
2986 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)));
2987 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2988 } 3464 }
… …
3021 loop_done = EVBREAK_CANCEL; 3497 loop_done = EVBREAK_CANCEL;
3022 3498
3023#if EV_FEATURE_API 3499#if EV_FEATURE_API
3024 --loop_depth; 3500 --loop_depth;
3025#endif 3501#endif
3502
3503 return activecnt;
3026} 3504}
3027 3505
3028void 3506void
3029ev_break (EV_P_ int how) 3507ev_break (EV_P_ int how) EV_THROW
3030{ 3508{
3031 loop_done = how; 3509 loop_done = how;
3032} 3510}
3033 3511
3034void 3512void
3035ev_ref (EV_P) 3513ev_ref (EV_P) EV_THROW
3036{ 3514{
3037 ++activecnt; 3515 ++activecnt;
3038} 3516}
3039 3517
3040void 3518void
3041ev_unref (EV_P) 3519ev_unref (EV_P) EV_THROW
3042{ 3520{
3043 --activecnt; 3521 --activecnt;
3044} 3522}
3045 3523
3046void 3524void
3047ev_now_update (EV_P) 3525ev_now_update (EV_P) EV_THROW
3048{ 3526{
3049 time_update (EV_A_ 1e100); 3527 time_update (EV_A_ 1e100);
3050} 3528}
3051 3529
3052void 3530void
3053ev_suspend (EV_P) 3531ev_suspend (EV_P) EV_THROW
3054{ 3532{
3055 ev_now_update (EV_A); 3533 ev_now_update (EV_A);
3056} 3534}
3057 3535
3058void 3536void
3059ev_resume (EV_P) 3537ev_resume (EV_P) EV_THROW
3060{ 3538{
3061 ev_tstamp mn_prev = mn_now; 3539 ev_tstamp mn_prev = mn_now;
3062 3540
3063 ev_now_update (EV_A); 3541 ev_now_update (EV_A);
3064 timers_reschedule (EV_A_ mn_now - mn_prev); 3542 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3103 w->pending = 0; 3581 w->pending = 0;
3104 } 3582 }
3105} 3583}
3106 3584
3107int 3585int
3108ev_clear_pending (EV_P_ void *w) 3586ev_clear_pending (EV_P_ void *w) EV_THROW
3109{ 3587{
3110 W w_ = (W)w; 3588 W w_ = (W)w;
3111 int pending = w_->pending; 3589 int pending = w_->pending;
3112 3590
3113 if (expect_true (pending)) 3591 if (expect_true (pending))
… …
3146} 3624}
3147 3625
3148/*****************************************************************************/ 3626/*****************************************************************************/
3149 3627
3150void noinline 3628void noinline
3151ev_io_start (EV_P_ ev_io *w) 3629ev_io_start (EV_P_ ev_io *w) EV_THROW
3152{ 3630{
3153 int fd = w->fd; 3631 int fd = w->fd;
3154 3632
3155 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
3156 return; 3634 return;
… …
3162 3640
3163 ev_start (EV_A_ (W)w, 1); 3641 ev_start (EV_A_ (W)w, 1);
3164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3165 wlist_add (&anfds[fd].head, (WL)w); 3643 wlist_add (&anfds[fd].head, (WL)w);
3166 3644
3645 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647
3167 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);
3168 w->events &= ~EV__IOFDSET; 3649 w->events &= ~EV__IOFDSET;
3169 3650
3170 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
3171} 3652}
3172 3653
3173void noinline 3654void noinline
3174ev_io_stop (EV_P_ ev_io *w) 3655ev_io_stop (EV_P_ ev_io *w) EV_THROW
3175{ 3656{
3176 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
3177 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
3178 return; 3659 return;
3179 3660
… …
3188 3669
3189 EV_FREQUENT_CHECK; 3670 EV_FREQUENT_CHECK;
3190} 3671}
3191 3672
3192void noinline 3673void noinline
3193ev_timer_start (EV_P_ ev_timer *w) 3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3194{ 3675{
3195 if (expect_false (ev_is_active (w))) 3676 if (expect_false (ev_is_active (w)))
3196 return; 3677 return;
3197 3678
3198 ev_at (w) += mn_now; 3679 ev_at (w) += mn_now;
… …
3212 3693
3213 /*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));*/
3214} 3695}
3215 3696
3216void noinline 3697void noinline
3217ev_timer_stop (EV_P_ ev_timer *w) 3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3218{ 3699{
3219 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
3220 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
3221 return; 3702 return;
3222 3703
… …
3242 3723
3243 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
3244} 3725}
3245 3726
3246void noinline 3727void noinline
3247ev_timer_again (EV_P_ ev_timer *w) 3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3248{ 3729{
3249 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
3731
3732 clear_pending (EV_A_ (W)w);
3250 3733
3251 if (ev_is_active (w)) 3734 if (ev_is_active (w))
3252 { 3735 {
3253 if (w->repeat) 3736 if (w->repeat)
3254 { 3737 {
… …
3267 3750
3268 EV_FREQUENT_CHECK; 3751 EV_FREQUENT_CHECK;
3269} 3752}
3270 3753
3271ev_tstamp 3754ev_tstamp
3272ev_timer_remaining (EV_P_ ev_timer *w) 3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3273{ 3756{
3274 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3275} 3758}
3276 3759
3277#if EV_PERIODIC_ENABLE 3760#if EV_PERIODIC_ENABLE
3278void noinline 3761void noinline
3279ev_periodic_start (EV_P_ ev_periodic *w) 3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3280{ 3763{
3281 if (expect_false (ev_is_active (w))) 3764 if (expect_false (ev_is_active (w)))
3282 return; 3765 return;
3283 3766
3284 if (w->reschedule_cb) 3767 if (w->reschedule_cb)
… …
3304 3787
3305 /*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));*/
3306} 3789}
3307 3790
3308void noinline 3791void noinline
3309ev_periodic_stop (EV_P_ ev_periodic *w) 3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3310{ 3793{
3311 clear_pending (EV_A_ (W)w); 3794 clear_pending (EV_A_ (W)w);
3312 if (expect_false (!ev_is_active (w))) 3795 if (expect_false (!ev_is_active (w)))
3313 return; 3796 return;
3314 3797
… …
3332 3815
3333 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
3334} 3817}
3335 3818
3336void noinline 3819void noinline
3337ev_periodic_again (EV_P_ ev_periodic *w) 3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3338{ 3821{
3339 /* TODO: use adjustheap and recalculation */ 3822 /* TODO: use adjustheap and recalculation */
3340 ev_periodic_stop (EV_A_ w); 3823 ev_periodic_stop (EV_A_ w);
3341 ev_periodic_start (EV_A_ w); 3824 ev_periodic_start (EV_A_ w);
3342} 3825}
… …
3347#endif 3830#endif
3348 3831
3349#if EV_SIGNAL_ENABLE 3832#if EV_SIGNAL_ENABLE
3350 3833
3351void noinline 3834void noinline
3352ev_signal_start (EV_P_ ev_signal *w) 3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3353{ 3836{
3354 if (expect_false (ev_is_active (w))) 3837 if (expect_false (ev_is_active (w)))
3355 return; 3838 return;
3356 3839
3357 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));
… …
3359#if EV_MULTIPLICITY 3842#if EV_MULTIPLICITY
3360 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",
3361 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3844 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3362 3845
3363 signals [w->signum - 1].loop = EV_A; 3846 signals [w->signum - 1].loop = EV_A;
3847 ECB_MEMORY_FENCE_RELEASE;
3364#endif 3848#endif
3365 3849
3366 EV_FREQUENT_CHECK; 3850 EV_FREQUENT_CHECK;
3367 3851
3368#if EV_USE_SIGNALFD 3852#if EV_USE_SIGNALFD
… …
3428 3912
3429 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
3430} 3914}
3431 3915
3432void noinline 3916void noinline
3433ev_signal_stop (EV_P_ ev_signal *w) 3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3434{ 3918{
3435 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
3436 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
3437 return; 3921 return;
3438 3922
… …
3469#endif 3953#endif
3470 3954
3471#if EV_CHILD_ENABLE 3955#if EV_CHILD_ENABLE
3472 3956
3473void 3957void
3474ev_child_start (EV_P_ ev_child *w) 3958ev_child_start (EV_P_ ev_child *w) EV_THROW
3475{ 3959{
3476#if EV_MULTIPLICITY 3960#if EV_MULTIPLICITY
3477 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));
3478#endif 3962#endif
3479 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
… …
3486 3970
3487 EV_FREQUENT_CHECK; 3971 EV_FREQUENT_CHECK;
3488} 3972}
3489 3973
3490void 3974void
3491ev_child_stop (EV_P_ ev_child *w) 3975ev_child_stop (EV_P_ ev_child *w) EV_THROW
3492{ 3976{
3493 clear_pending (EV_A_ (W)w); 3977 clear_pending (EV_A_ (W)w);
3494 if (expect_false (!ev_is_active (w))) 3978 if (expect_false (!ev_is_active (w)))
3495 return; 3979 return;
3496 3980
… …
3523# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3524 4008
3525static void noinline 4009static void noinline
3526infy_add (EV_P_ ev_stat *w) 4010infy_add (EV_P_ ev_stat *w)
3527{ 4011{
3528 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);
3529 4016
3530 if (w->wd >= 0) 4017 if (w->wd >= 0)
3531 { 4018 {
3532 struct statfs sfs; 4019 struct statfs sfs;
3533 4020
… …
3537 4024
3538 if (!fs_2625) 4025 if (!fs_2625)
3539 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3540 else if (!statfs (w->path, &sfs) 4027 else if (!statfs (w->path, &sfs)
3541 && (sfs.f_type == 0x1373 /* devfs */ 4028 && (sfs.f_type == 0x1373 /* devfs */
4029 || sfs.f_type == 0x4006 /* fat */
4030 || sfs.f_type == 0x4d44 /* msdos */
3542 || 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 */
3543 || sfs.f_type == 0x3153464a /* jfs */ 4035 || sfs.f_type == 0x3153464a /* jfs */
4036 || sfs.f_type == 0x9123683e /* btrfs */
3544 || sfs.f_type == 0x52654973 /* reiser3 */ 4037 || sfs.f_type == 0x52654973 /* reiser3 */
3545 || sfs.f_type == 0x01021994 /* tempfs */ 4038 || sfs.f_type == 0x01021994 /* tmpfs */
3546 || sfs.f_type == 0x58465342 /* xfs */)) 4039 || sfs.f_type == 0x58465342 /* xfs */))
3547 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4040 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3548 else 4041 else
3549 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 */
3550 } 4043 }
… …
3663} 4156}
3664 4157
3665inline_size int 4158inline_size int
3666infy_newfd (void) 4159infy_newfd (void)
3667{ 4160{
3668#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4161#if defined IN_CLOEXEC && defined IN_NONBLOCK
3669 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4162 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3670 if (fd >= 0) 4163 if (fd >= 0)
3671 return fd; 4164 return fd;
3672#endif 4165#endif
3673 return inotify_init (); 4166 return inotify_init ();
… …
3748#else 4241#else
3749# define EV_LSTAT(p,b) lstat (p, b) 4242# define EV_LSTAT(p,b) lstat (p, b)
3750#endif 4243#endif
3751 4244
3752void 4245void
3753ev_stat_stat (EV_P_ ev_stat *w) 4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3754{ 4247{
3755 if (lstat (w->path, &w->attr) < 0) 4248 if (lstat (w->path, &w->attr) < 0)
3756 w->attr.st_nlink = 0; 4249 w->attr.st_nlink = 0;
3757 else if (!w->attr.st_nlink) 4250 else if (!w->attr.st_nlink)
3758 w->attr.st_nlink = 1; 4251 w->attr.st_nlink = 1;
… …
3797 ev_feed_event (EV_A_ w, EV_STAT); 4290 ev_feed_event (EV_A_ w, EV_STAT);
3798 } 4291 }
3799} 4292}
3800 4293
3801void 4294void
3802ev_stat_start (EV_P_ ev_stat *w) 4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3803{ 4296{
3804 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3805 return; 4298 return;
3806 4299
3807 ev_stat_stat (EV_A_ w); 4300 ev_stat_stat (EV_A_ w);
… …
3828 4321
3829 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
3830} 4323}
3831 4324
3832void 4325void
3833ev_stat_stop (EV_P_ ev_stat *w) 4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3834{ 4327{
3835 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
3837 return; 4330 return;
3838 4331
… …
3854} 4347}
3855#endif 4348#endif
3856 4349
3857#if EV_IDLE_ENABLE 4350#if EV_IDLE_ENABLE
3858void 4351void
3859ev_idle_start (EV_P_ ev_idle *w) 4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3860{ 4353{
3861 if (expect_false (ev_is_active (w))) 4354 if (expect_false (ev_is_active (w)))
3862 return; 4355 return;
3863 4356
3864 pri_adjust (EV_A_ (W)w); 4357 pri_adjust (EV_A_ (W)w);
… …
3877 4370
3878 EV_FREQUENT_CHECK; 4371 EV_FREQUENT_CHECK;
3879} 4372}
3880 4373
3881void 4374void
3882ev_idle_stop (EV_P_ ev_idle *w) 4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3883{ 4376{
3884 clear_pending (EV_A_ (W)w); 4377 clear_pending (EV_A_ (W)w);
3885 if (expect_false (!ev_is_active (w))) 4378 if (expect_false (!ev_is_active (w)))
3886 return; 4379 return;
3887 4380
… …
3901} 4394}
3902#endif 4395#endif
3903 4396
3904#if EV_PREPARE_ENABLE 4397#if EV_PREPARE_ENABLE
3905void 4398void
3906ev_prepare_start (EV_P_ ev_prepare *w) 4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3907{ 4400{
3908 if (expect_false (ev_is_active (w))) 4401 if (expect_false (ev_is_active (w)))
3909 return; 4402 return;
3910 4403
3911 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
… …
3916 4409
3917 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
3918} 4411}
3919 4412
3920void 4413void
3921ev_prepare_stop (EV_P_ ev_prepare *w) 4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3922{ 4415{
3923 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
3924 if (expect_false (!ev_is_active (w))) 4417 if (expect_false (!ev_is_active (w)))
3925 return; 4418 return;
3926 4419
… …
3939} 4432}
3940#endif 4433#endif
3941 4434
3942#if EV_CHECK_ENABLE 4435#if EV_CHECK_ENABLE
3943void 4436void
3944ev_check_start (EV_P_ ev_check *w) 4437ev_check_start (EV_P_ ev_check *w) EV_THROW
3945{ 4438{
3946 if (expect_false (ev_is_active (w))) 4439 if (expect_false (ev_is_active (w)))
3947 return; 4440 return;
3948 4441
3949 EV_FREQUENT_CHECK; 4442 EV_FREQUENT_CHECK;
… …
3954 4447
3955 EV_FREQUENT_CHECK; 4448 EV_FREQUENT_CHECK;
3956} 4449}
3957 4450
3958void 4451void
3959ev_check_stop (EV_P_ ev_check *w) 4452ev_check_stop (EV_P_ ev_check *w) EV_THROW
3960{ 4453{
3961 clear_pending (EV_A_ (W)w); 4454 clear_pending (EV_A_ (W)w);
3962 if (expect_false (!ev_is_active (w))) 4455 if (expect_false (!ev_is_active (w)))
3963 return; 4456 return;
3964 4457
… …
3977} 4470}
3978#endif 4471#endif
3979 4472
3980#if EV_EMBED_ENABLE 4473#if EV_EMBED_ENABLE
3981void noinline 4474void noinline
3982ev_embed_sweep (EV_P_ ev_embed *w) 4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3983{ 4476{
3984 ev_run (w->other, EVRUN_NOWAIT); 4477 ev_run (w->other, EVRUN_NOWAIT);
3985} 4478}
3986 4479
3987static void 4480static void
… …
4035 ev_idle_stop (EV_A_ idle); 4528 ev_idle_stop (EV_A_ idle);
4036} 4529}
4037#endif 4530#endif
4038 4531
4039void 4532void
4040ev_embed_start (EV_P_ ev_embed *w) 4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4041{ 4534{
4042 if (expect_false (ev_is_active (w))) 4535 if (expect_false (ev_is_active (w)))
4043 return; 4536 return;
4044 4537
4045 { 4538 {
… …
4066 4559
4067 EV_FREQUENT_CHECK; 4560 EV_FREQUENT_CHECK;
4068} 4561}
4069 4562
4070void 4563void
4071ev_embed_stop (EV_P_ ev_embed *w) 4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4072{ 4565{
4073 clear_pending (EV_A_ (W)w); 4566 clear_pending (EV_A_ (W)w);
4074 if (expect_false (!ev_is_active (w))) 4567 if (expect_false (!ev_is_active (w)))
4075 return; 4568 return;
4076 4569
… …
4086} 4579}
4087#endif 4580#endif
4088 4581
4089#if EV_FORK_ENABLE 4582#if EV_FORK_ENABLE
4090void 4583void
4091ev_fork_start (EV_P_ ev_fork *w) 4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4092{ 4585{
4093 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
4094 return; 4587 return;
4095 4588
4096 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
… …
4101 4594
4102 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
4103} 4596}
4104 4597
4105void 4598void
4106ev_fork_stop (EV_P_ ev_fork *w) 4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4107{ 4600{
4108 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
4109 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
4110 return; 4603 return;
4111 4604
… …
4124} 4617}
4125#endif 4618#endif
4126 4619
4127#if EV_CLEANUP_ENABLE 4620#if EV_CLEANUP_ENABLE
4128void 4621void
4129ev_cleanup_start (EV_P_ ev_cleanup *w) 4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4130{ 4623{
4131 if (expect_false (ev_is_active (w))) 4624 if (expect_false (ev_is_active (w)))
4132 return; 4625 return;
4133 4626
4134 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
… …
4141 ev_unref (EV_A); 4634 ev_unref (EV_A);
4142 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
4143} 4636}
4144 4637
4145void 4638void
4146ev_cleanup_stop (EV_P_ ev_cleanup *w) 4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4147{ 4640{
4148 clear_pending (EV_A_ (W)w); 4641 clear_pending (EV_A_ (W)w);
4149 if (expect_false (!ev_is_active (w))) 4642 if (expect_false (!ev_is_active (w)))
4150 return; 4643 return;
4151 4644
… …
4165} 4658}
4166#endif 4659#endif
4167 4660
4168#if EV_ASYNC_ENABLE 4661#if EV_ASYNC_ENABLE
4169void 4662void
4170ev_async_start (EV_P_ ev_async *w) 4663ev_async_start (EV_P_ ev_async *w) EV_THROW
4171{ 4664{
4172 if (expect_false (ev_is_active (w))) 4665 if (expect_false (ev_is_active (w)))
4173 return; 4666 return;
4174 4667
4175 w->sent = 0; 4668 w->sent = 0;
… …
4184 4677
4185 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
4186} 4679}
4187 4680
4188void 4681void
4189ev_async_stop (EV_P_ ev_async *w) 4682ev_async_stop (EV_P_ ev_async *w) EV_THROW
4190{ 4683{
4191 clear_pending (EV_A_ (W)w); 4684 clear_pending (EV_A_ (W)w);
4192 if (expect_false (!ev_is_active (w))) 4685 if (expect_false (!ev_is_active (w)))
4193 return; 4686 return;
4194 4687
… …
4205 4698
4206 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
4207} 4700}
4208 4701
4209void 4702void
4210ev_async_send (EV_P_ ev_async *w) 4703ev_async_send (EV_P_ ev_async *w) EV_THROW
4211{ 4704{
4212 w->sent = 1; 4705 w->sent = 1;
4213 evpipe_write (EV_A_ &async_pending); 4706 evpipe_write (EV_A_ &async_pending);
4214} 4707}
4215#endif 4708#endif
… …
4252 4745
4253 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));
4254} 4747}
4255 4748
4256void 4749void
4257ev_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
4258{ 4751{
4259 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));
4260 4753
4261 if (expect_false (!once)) 4754 if (expect_false (!once))
4262 { 4755 {
… …
4284 4777
4285/*****************************************************************************/ 4778/*****************************************************************************/
4286 4779
4287#if EV_WALK_ENABLE 4780#if EV_WALK_ENABLE
4288void ecb_cold 4781void ecb_cold
4289ev_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
4290{ 4783{
4291 int i, j; 4784 int i, j;
4292 ev_watcher_list *wl, *wn; 4785 ev_watcher_list *wl, *wn;
4293 4786
4294 if (types & (EV_IO | EV_EMBED)) 4787 if (types & (EV_IO | EV_EMBED))
… …
4400 4893
4401#if EV_MULTIPLICITY 4894#if EV_MULTIPLICITY
4402 #include "ev_wrap.h" 4895 #include "ev_wrap.h"
4403#endif 4896#endif
4404 4897
4405EV_CPP(})
4406

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